/*! Aurora Theme · 雪源博客
 *  极光暗色主题 - 现代玻璃拟态 + 微交互
 *  Author: Xueyuan
 */

/* ---------- Design Tokens ---------- */
:root {
  /* Palette - dark (default) */
  --bg-0: #07090f;
  --bg-1: #0b1020;
  --bg-2: #11172b;
  --bg-3: #161d36;
  --surface: rgba(20, 26, 48, 0.55);
  --surface-strong: rgba(20, 26, 48, 0.78);
  --surface-border: rgba(120, 145, 200, 0.18);
  --hairline: rgba(255, 255, 255, 0.07);

  --text-1: #f3f6ff;
  --text-2: #c8d0e7;
  --text-3: #8693b6;
  --text-mute: #5d6a8b;

  --brand: #7c8cff;
  --brand-2: #59e3ff;
  --brand-3: #b888ff;
  --accent: #59e3ff;
  --success: #4ade80;
  --warning: #fbbf24;
  --danger: #f87171;

  /* Semantic foreground / action tokens. Keep vivid palette values for glow and decoration. */
  --link-fg: var(--brand);
  --link-hover-fg: var(--brand-2);
  --content-link-fg: var(--brand-2);
  --content-link-hover-fg: var(--brand);
  --accent-fg: var(--brand-2);
  --focus-ring: var(--brand-2);
  --success-fg: var(--success);
  --warning-fg: var(--warning);
  --danger-fg: var(--danger);
  --disabled-fg: var(--text-mute);
  --disabled-bg: var(--bg-3);
  --disabled-border: var(--hairline);
  --on-action: #fff;
  --on-action-muted: rgba(255,255,255,0.78);
  --action-brand: var(--brand);
  --action-purple: var(--brand-3);
  --action-cyan: var(--brand-2);
  --action-danger: #ff5d73;

  --aurora-1: radial-gradient(60% 50% at 15% 10%, rgba(124, 140, 255, 0.35) 0%, transparent 60%);
  --aurora-2: radial-gradient(50% 40% at 85% 15%, rgba(89, 227, 255, 0.28) 0%, transparent 60%);
  --aurora-3: radial-gradient(55% 50% at 50% 110%, rgba(184, 136, 255, 0.30) 0%, transparent 60%);

  --grid-color: rgba(124, 140, 255, 0.06);

  /* Type */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Shape */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --t-fast: 180ms;
  --t-base: 320ms;
  --t-slow: 600ms;

  /* Layout */
  --sidebar-w: 280px;
  --content-max: 880px;
  --shadow-1: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 12px 32px rgba(0, 0, 0, 0.45);
  --shadow-2: 0 20px 60px rgba(0, 0, 0, 0.55), 0 0 0 1px var(--surface-border) inset;
  --glow-brand: 0 0 28px rgba(124, 140, 255, 0.45);
}

/* Light theme override */
[data-theme="light"] {
  --bg-0: #f4f6fb;
  --bg-1: #eceff7;
  --bg-2: #ffffff;
  --bg-3: #f7f9ff;
  --surface: rgba(255, 255, 255, 0.7);
  --surface-strong: rgba(255, 255, 255, 0.92);
  --surface-border: rgba(40, 60, 110, 0.10);
  --hairline: rgba(20, 30, 60, 0.08);

  --text-1: #0d1330;
  --text-2: #36436b;
  --text-3: #5b6788;
  --text-mute: #5c6a8c;

  --brand: #5566ff;
  --brand-2: #1aa9c9;
  --brand-3: #8a55ff;
  --accent: #1aa9c9;

  --link-fg: #4658dc;
  --link-hover-fg: #08728a;
  --content-link-fg: #08728a;
  --content-link-hover-fg: #4658dc;
  --accent-fg: #08728a;
  --focus-ring: #4658dc;
  --success-fg: #16733b;
  --warning-fg: #7a5700;
  --danger-fg: #b4232e;
  --disabled-fg: #6f7893;
  --disabled-bg: #f3f5fa;
  --disabled-border: #d9deeb;
  --on-action-muted: rgba(255,255,255,0.9);
  --action-brand: #4658dc;
  --action-purple: #7142dc;
  --action-cyan: #08728a;
  --action-danger: #c83455;

  --aurora-1: radial-gradient(60% 50% at 15% 10%, rgba(124, 140, 255, 0.18) 0%, transparent 60%);
  --aurora-2: radial-gradient(50% 40% at 85% 15%, rgba(89, 227, 255, 0.18) 0%, transparent 60%);
  --aurora-3: radial-gradient(55% 50% at 50% 110%, rgba(184, 136, 255, 0.18) 0%, transparent 60%);

  --grid-color: rgba(40, 60, 110, 0.06);
  --shadow-1: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 8px 28px rgba(20, 30, 60, 0.10);
  --shadow-2: 0 20px 50px rgba(20, 30, 60, 0.12), 0 0 0 1px var(--surface-border) inset;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scrollbar-color: var(--brand) transparent;
  scrollbar-width: thin;
  /* 防止移动端任何子元素（长 URL、代码、网格列）撑开文档导致横向滚动 */
  overflow-x: hidden;
  max-width: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-1);
  background: var(--bg-0);
  overflow-x: hidden;
  max-width: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* 原生多页面转场：支持的浏览器获得连续导航，不支持时自然降级。 */
@view-transition {
  navigation: auto;
}

@keyframes aurora-page-out {
  to { opacity: 0; transform: translateY(-8px) scale(0.995); }
}

@keyframes aurora-page-in {
  from { opacity: 0; transform: translateY(12px) scale(0.995); }
}

::view-transition-old(root) {
  animation: aurora-page-out 180ms ease-in both;
}

::view-transition-new(root) {
  animation: aurora-page-in 380ms var(--ease-out) both;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

:where(a) {
  color: var(--link-fg);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease-out);
}

:where(a:hover) {
  color: var(--link-hover-fg);
}

:where(a[href], button, input, select, textarea, summary, [tabindex]:not([tabindex="-1"])):focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

ul,
ol {
  padding-left: 1.2em;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.6em;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-1);
}

p {
  margin: 0 0 1em;
  color: var(--text-2);
}

hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--surface-border), transparent);
  margin: 2.4em 0;
}

::selection {
  background: color-mix(in srgb, var(--brand) 35%, transparent);
  color: var(--text-1);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--brand), var(--brand-3));
  border-radius: 999px;
  border: 2px solid var(--bg-0);
}

/* ---------- Background ---------- */
.bg-aurora {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    var(--aurora-1),
    var(--aurora-2),
    var(--aurora-3),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
  filter: saturate(1.15);
  animation: aurora-drift 22s var(--ease-in-out) infinite alternate;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 35%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 35%, transparent 80%);
  pointer-events: none;
  animation: grid-pan 30s linear infinite;
}

@keyframes aurora-drift {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  100% { transform: translate3d(-2%, -1%, 0) scale(1.05); }
}

@keyframes grid-pan {
  0% { background-position: 0 0, 0 0; }
  100% { background-position: 48px 48px, 48px 48px; }
}

/* ---------- Ambient Click Feedback ---------- */
.click-bloom {
  --click-tone: var(--brand);
  --click-tone-alt: var(--brand-2);
  position: fixed;
  left: var(--click-x);
  top: var(--click-y);
  width: 1px;
  height: 1px;
  z-index: 120;
  pointer-events: none;
  color: var(--click-tone);
  transform: rotate(var(--click-rotation, 0deg));
  animation: click-bloom-life 820ms var(--ease-out) both;
  contain: layout style;
}

.click-bloom--tone-2 {
  --click-tone: var(--brand-2);
  --click-tone-alt: var(--brand-3);
}

.click-bloom--tone-3 {
  --click-tone: var(--brand-3);
  --click-tone-alt: var(--brand);
}

.click-bloom::before,
.click-bloom::after,
.click-bloom__ring,
.click-bloom__particle {
  position: absolute;
  left: 0;
  top: 0;
  display: block;
  pointer-events: none;
}

.click-bloom::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--click-tone) 78%, white);
  box-shadow: 0 0 10px color-mix(in srgb, var(--click-tone) 48%, transparent);
  animation: click-bloom-core 500ms var(--ease-out) both;
}

.click-bloom::after {
  content: "";
  width: 12px;
  height: 12px;
  border: 1px solid color-mix(in srgb, var(--click-tone-alt) 44%, transparent);
  border-radius: 50%;
  animation: click-bloom-ring-soft 760ms 55ms var(--ease-out) both;
}

.click-bloom__ring {
  width: 16px;
  height: 16px;
  border: 1px solid color-mix(in srgb, var(--click-tone) 62%, transparent);
  border-radius: 50%;
  box-shadow: 0 0 14px color-mix(in srgb, var(--click-tone) 12%, transparent);
  animation: click-bloom-ring 720ms var(--ease-out) both;
}

.click-bloom__particle {
  width: var(--particle-size);
  height: var(--particle-size);
  border-radius: 50%;
  background: color-mix(in srgb, var(--click-tone-alt) 76%, white);
  box-shadow: 0 0 6px color-mix(in srgb, var(--click-tone) 38%, transparent);
  opacity: 0;
}

.click-bloom--ripple .click-bloom__particle {
  animation: click-bloom-dust 680ms var(--particle-delay) var(--ease-out) both;
}

.click-bloom--burst .click-bloom__ring {
  width: 10px;
  height: 10px;
  border-style: dashed;
  animation-duration: 620ms;
}

.click-bloom--burst .click-bloom__particle {
  animation: click-bloom-burst 650ms var(--particle-delay) var(--ease-out) both;
}

.click-bloom--orbit .click-bloom__ring {
  width: 20px;
  height: 20px;
  border-color: color-mix(in srgb, var(--click-tone) 54%, transparent);
  border-right-color: transparent;
  border-bottom-color: color-mix(in srgb, var(--click-tone-alt) 28%, transparent);
  animation: click-bloom-orbit-ring 780ms var(--ease-out) both;
}

.click-bloom--orbit .click-bloom__particle {
  animation: click-bloom-orbit-particle 740ms var(--particle-delay) var(--ease-out) both;
}

.click-bloom--orbit .click-bloom__particle:nth-of-type(n + 5) {
  display: none;
}

@keyframes click-bloom-life {
  0%, 82% { opacity: 1; }
  100% { opacity: 0; }
}

@keyframes click-bloom-core {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.3); }
  24% { opacity: 0.82; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(0.45); }
}

@keyframes click-bloom-ring {
  0% { opacity: 0.62; transform: translate(-50%, -50%) scale(0.28); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(3.45); }
}

@keyframes click-bloom-ring-soft {
  0% { opacity: 0.4; transform: translate(-50%, -50%) scale(0.42); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(4.8); }
}

@keyframes click-bloom-dust {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(var(--particle-angle)) translateX(7px) scale(0.4);
  }
  20% { opacity: 0.56; }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(var(--particle-angle)) translateX(var(--particle-distance)) scale(0.12);
  }
}

@keyframes click-bloom-burst {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(var(--particle-angle)) translateX(4px) scale(0.5);
  }
  18% { opacity: 0.72; }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(var(--particle-angle)) translateX(calc(var(--particle-distance) + 8px)) scale(0.1);
  }
}

@keyframes click-bloom-orbit-ring {
  0% { opacity: 0.58; transform: translate(-50%, -50%) scale(0.38) rotate(0); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(2.65) rotate(115deg); }
}

@keyframes click-bloom-orbit-particle {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(var(--particle-angle)) translateX(9px) scale(0.48);
  }
  22% { opacity: 0.62; }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) rotate(calc(var(--particle-angle) + 82deg)) translateX(var(--particle-distance)) scale(0.16);
  }
}

/* ---------- Reading Progress ---------- */
.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--link-fg), var(--accent-fg), var(--action-purple));
  box-shadow: 0 0 12px var(--brand-2);
  z-index: 999;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 80ms linear;
  will-change: transform;
}

@keyframes read-progress-fill {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@supports (animation-timeline: scroll()) {
  .read-progress {
    animation: read-progress-fill linear both;
    animation-timeline: scroll(root block);
  }
}

/* ---------- Layout ---------- */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
  /* iOS Safari：地址栏伸缩时 100vh 不准确，用 dvh 兜底 */
  min-height: 100dvh;
}

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  align-self: start;
  width: var(--sidebar-w);
  height: 100vh;
  /* iOS Safari：100vh 比真实视口高，地址栏出现时抽屉底部会被截掉 */
  height: 100dvh;
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-right: 1px solid var(--hairline);
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-1) 92%, transparent), color-mix(in srgb, var(--bg-0) 92%, transparent));
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  overflow-y: auto;
  overscroll-behavior: contain;
  z-index: 50;
}

/* 在 grid 布局下，sidebar 已 fixed，确保 main 始终落在第 2 列 */
.app > .main {
  grid-column: 2;
  min-width: 0;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  padding-top: 8px;
}

.avatar-return {
  position: relative;
  width: 96px;
  height: 96px;
  flex: 0 0 auto;
  isolation: isolate;
}

.avatar-return,
.avatar-return * {
  cursor: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='28' viewBox='0 0 24 24'%3E%3Cpath d='M13.7 4.3c2.9-2.9 6.5-2.3 6.5-2.3s.6 3.6-2.3 6.5l-5.7 5.7-5.1-5.1 6.6-4.8Z' fill='%2359e3ff' stroke='%2307090f' stroke-width='1.35' stroke-linejoin='round'/%3E%3Cpath d='m8.8 11.1-3.7 3.7-2.5.6.7-2.4 3.8-3.8M11.1 13.4l-1.7 5.2 1.1 2.8 1.3-2.6 3.3-3.3' fill='%23b888ff' stroke='%2307090f' stroke-width='1.15' stroke-linecap='round' stroke-linejoin='round'/%3E%3Ccircle cx='15.8' cy='6.2' r='1.35' fill='%23f3f6ff'/%3E%3Cpath d='M6.1 17.8 3.2 20.7M7.9 19.3l-1.6 2.2' stroke='%23fbbf24' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E") 21 5, pointer;
}

.avatar-return::before {
  content: "";
  position: absolute;
  inset: -8px;
  z-index: 0;
  border-radius: 50%;
  background: conic-gradient(
    from 15deg,
    transparent 0 52%,
    color-mix(in srgb, var(--brand-2) 78%, transparent) 59%,
    color-mix(in srgb, var(--brand) 88%, transparent) 65%,
    transparent 73% 100%
  );
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 1px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #000 calc(100% - 1px));
  opacity: 0;
  transform: scale(0.86) rotate(-28deg);
  transition: opacity var(--t-base) var(--ease-out), transform var(--t-slow) var(--ease-out);
  pointer-events: none;
}

.avatar {
  position: relative;
  z-index: 1;
  display: block;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  padding: 3px;
  background: conic-gradient(from 0deg, var(--brand), var(--brand-2), var(--brand-3), var(--brand));
  box-shadow: var(--glow-brand);
  /* 默认不旋转；JS 控制 hover 时旋转，移开后平滑回到 0deg */
  transform: rotate(0deg);
  will-change: transform;
}

.avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-0);
}

.avatar-return__signal {
  position: absolute;
  left: 50%;
  bottom: -12px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  width: max-content;
  padding: 5px 8px 5px 7px;
  border: 1px solid color-mix(in srgb, var(--brand-2) 46%, transparent);
  border-radius: 999px;
  color: color-mix(in srgb, var(--text-1) 90%, var(--brand-2));
  background: color-mix(in srgb, var(--bg-1) 88%, transparent);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.3), 0 0 18px color-mix(in srgb, var(--brand-2) 14%, transparent);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1;
  white-space: nowrap;
  opacity: 0;
  transform: translate(-50%, 8px) scale(0.9);
  transition: opacity var(--t-base) var(--ease-out), transform var(--t-base) var(--ease-out), border-color var(--t-fast) var(--ease-out);
  pointer-events: none;
}

.avatar-return__signal svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: var(--brand-2);
  stroke-width: 1.35;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 5px color-mix(in srgb, var(--brand-2) 65%, transparent));
}

.avatar-return__signal b {
  color: var(--accent-fg);
  font-size: 0.72rem;
  font-weight: 700;
  transform: translate(-1px, -1px);
  transition: transform var(--t-fast) var(--ease-out);
}

.avatar-return:is(:hover, :focus-within)::before {
  opacity: 0.92;
  transform: scale(1) rotate(0deg);
  animation: avatar-return-orbit 3.6s linear infinite;
}

.avatar-return:is(:hover, :focus-within) .avatar-return__signal {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
  border-color: color-mix(in srgb, var(--brand-2) 70%, transparent);
  animation: avatar-return-beacon 1.8s var(--ease-in-out) infinite;
}

.avatar-return:is(:hover, :focus-within) .avatar-return__signal b {
  transform: translate(1px, -2px);
}

@keyframes avatar-return-orbit {
  to { transform: scale(1) rotate(360deg); }
}

@keyframes avatar-return-beacon {
  0%, 100% { box-shadow: 0 8px 22px rgba(0, 0, 0, 0.3), 0 0 14px color-mix(in srgb, var(--brand-2) 12%, transparent); }
  50% { box-shadow: 0 8px 22px rgba(0, 0, 0, 0.3), 0 0 24px color-mix(in srgb, var(--brand-2) 28%, transparent); }
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--brand), var(--brand-2), var(--brand-3));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.02em;
}

.brand-tagline {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-3);
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav a,
.nav-search {
  --i: 0;
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 11px 14px;
  margin: 0;
  font-size: 0.95rem;
  font-family: inherit;
  line-height: inherit;
  text-align: left;
  color: var(--text-2);
  background: transparent;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background var(--t-fast) var(--ease-out),
    color var(--t-fast) var(--ease-out),
    transform var(--t-fast) var(--ease-out),
    border-color var(--t-fast) var(--ease-out);
  overflow: hidden;
}

.nav a::before,
.nav-search::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, color-mix(in srgb, var(--brand) 22%, transparent) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform var(--t-slow) var(--ease-out);
  pointer-events: none;
}

.nav a:hover,
.nav-search:hover {
  color: var(--text-1);
  background: color-mix(in srgb, var(--brand) 10%, transparent);
  border-color: color-mix(in srgb, var(--brand) 35%, transparent);
  transform: translateX(4px);
}

.nav a:hover::before,
.nav-search:hover::before {
  transform: translateX(100%);
}

.nav a:focus-visible,
.nav-search:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.nav a.is-active {
  color: var(--text-1);
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 22%, transparent), color-mix(in srgb, var(--brand-2) 14%, transparent));
  border-color: color-mix(in srgb, var(--brand) 45%, transparent);
}

.nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.85;
}

.nav-search kbd {
  margin-left: auto;
  padding: 2px 7px;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  background: var(--bg-2);
  color: var(--text-3);
  font: 600 0.68rem/1.4 var(--font-mono);
  box-shadow: 0 1px 0 var(--surface-border);
}

.sidebar-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.social {
  display: flex;
  justify-content: center;
  gap: 10px;
}

.icon-btn {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  color: var(--text-2);
  cursor: pointer;
  transition: all var(--t-fast) var(--ease-out);
}

.icon-btn:hover {
  color: var(--text-1);
  border-color: color-mix(in srgb, var(--brand) 50%, transparent);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--brand) 28%, transparent);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

/* ---------- Theme Switch (clearly labeled) ---------- */
.theme-switch {
  --ts-h: 34px;
  --ts-pad: 4px;
  --ts-thumb: calc(var(--ts-h) - var(--ts-pad) * 2);
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-top: 12px;
  padding: 6px 10px 6px 6px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  color: var(--text-2);
  cursor: pointer;
  font: inherit;
  font-size: 0.84rem;
  line-height: 1;
  letter-spacing: 0.02em;
  transition: all var(--t-fast) var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}

.theme-switch:hover {
  color: var(--text-1);
  border-color: color-mix(in srgb, var(--brand) 50%, transparent);
  box-shadow: 0 8px 22px color-mix(in srgb, var(--brand) 28%, transparent);
  transform: translateY(-1px);
}

.theme-switch:focus-visible {
  outline: none;
  border-color: var(--focus-ring);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus-ring) 24%, transparent);
}

.theme-switch__track {
  position: relative;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: calc(var(--ts-h) * 2 - 6px);
  height: var(--ts-h);
  padding: 0 8px;
  border-radius: 999px;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--brand) 22%, var(--bg-2)),
    color-mix(in srgb, var(--brand-3) 18%, var(--bg-2))
  );
  border: 1px solid color-mix(in srgb, var(--brand) 30%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    inset 0 0 12px color-mix(in srgb, var(--brand) 14%, transparent);
}

.theme-switch__icon {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  color: var(--text-3);
  transition: color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}

.theme-switch__icon svg {
  width: 100%;
  height: 100%;
}

.theme-switch__thumb {
  position: absolute;
  top: var(--ts-pad);
  left: var(--ts-pad);
  width: var(--ts-thumb);
  height: var(--ts-thumb);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--brand-3));
  box-shadow:
    0 4px 14px color-mix(in srgb, var(--brand) 50%, transparent),
    0 0 0 1px color-mix(in srgb, var(--brand) 60%, transparent);
  transition: transform var(--t-base) var(--ease-out), background var(--t-base) var(--ease-out);
}

/* 暗色模式：滑块停在左侧（月亮） */
:root[data-theme="dark"] .theme-switch__icon--moon,
html:not([data-theme="light"]) .theme-switch__icon--moon {
  color: #fff;
}

/* 亮色模式：滑块滑到右侧（太阳） */
[data-theme="light"] .theme-switch__thumb {
  transform: translateX(calc(var(--ts-h) - 6px));
  background: linear-gradient(135deg, var(--action-cyan), var(--action-brand));
}

[data-theme="light"] .theme-switch__icon--sun {
  color: #fff;
}

/* 标签：根据当前主题只显示一个，避免视觉干扰 */
.theme-switch__label {
  flex: 1;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
  color: var(--text-2);
}

[data-theme-label-light] { display: none; }
[data-theme-label-dark]  { display: inline; }

[data-theme="light"] [data-theme-label-light] { display: inline; }
[data-theme="light"] [data-theme-label-dark]  { display: none; }

.theme-switch:hover .theme-switch__label {
  color: var(--text-1);
}

/* ---------- Main ---------- */
.main {
  position: relative;
  padding: 40px clamp(20px, 4vw, 56px) 80px;
  max-width: calc(var(--content-max) + 96px);
  width: 100%;
  margin: 0 auto;
}

/* ---------- Hero ---------- */
.hero {
  margin: 8px 0 36px;
  padding: 36px clamp(20px, 4vw, 44px);
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow-2);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 60%, transparent), transparent 40%, color-mix(in srgb, var(--brand-3) 60%, transparent));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-fg);
  margin-bottom: 14px;
}

.hero-eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-2);
  box-shadow: 0 0 10px var(--brand-2);
  animation: pulse 1.6s var(--ease-in-out) infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.5; }
}

.hero h1 {
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  margin-bottom: 12px;
  background: linear-gradient(120deg, var(--text-1), color-mix(in srgb, var(--brand-2) 60%, var(--text-1)));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  color: var(--text-2);
  max-width: 56ch;
  font-size: 1.02rem;
}

.hero-stats {
  display: flex;
  gap: 28px;
  margin-top: 22px;
  flex-wrap: wrap;
}

.hero-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-stats .num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-1);
}
.hero-stats .label {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* ---------- Section heading ---------- */
.section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 36px 0 20px;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-3);
}

.section-title::before {
  content: "";
  width: 6px;
  height: 18px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--brand), var(--brand-3));
  box-shadow: 0 0 10px var(--brand);
}

/* ---------- Post Card (list) ---------- */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.post-card {
  position: relative;
  padding: 24px clamp(18px, 3vw, 28px);
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  box-shadow: var(--shadow-1);
  transition:
    transform var(--t-base) var(--ease-out),
    box-shadow var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out);
  overflow: hidden;
  /* 性能优化：屏幕外的卡片跳过渲染，仅保留布局位（约 220px 一卡） */
  content-visibility: auto;
  contain-intrinsic-size: 220px;
}

.post-card::after {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 50%, transparent), transparent 50%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
  pointer-events: none;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  border-color: color-mix(in srgb, var(--brand) 30%, var(--surface-border));
}

.post-card:hover::after {
  opacity: 1;
}

.post-card h2 {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.post-card h2 a {
  color: var(--text-1);
  background-image: linear-gradient(90deg, var(--brand-2), var(--brand-2));
  background-repeat: no-repeat;
  background-size: 0% 2px;
  background-position: 0 100%;
  transition: background-size var(--t-base) var(--ease-out), color var(--t-fast) var(--ease-out);
}

.post-card h2 a:hover {
  color: var(--link-hover-fg);
  background-size: 100% 2px;
}

.post-card .excerpt {
  color: var(--text-2);
  margin: 0 0 16px;
  font-size: 0.98rem;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  font-size: 0.86rem;
  color: var(--text-3);
}

.post-meta time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  color: var(--text-2);
}

.post-meta time::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-2);
  box-shadow: 0 0 8px var(--brand-2);
}

.post-meta .sep {
  color: var(--text-mute);
}

.tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  font-size: 0.78rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand) 30%, transparent);
  color: var(--text-2);
  transition: all var(--t-fast) var(--ease-out);
}

.tag:hover {
  color: var(--text-1);
  background: color-mix(in srgb, var(--brand) 22%, transparent);
  border-color: color-mix(in srgb, var(--brand) 60%, transparent);
  transform: translateY(-1px);
}

/* ---------- Pagination ---------- */
.pagination {
  margin: 36px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  padding: 14px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.pagination a,
.pagination em,
.pagination span {
  min-width: 40px;
  padding: 8px 14px;
  text-align: center;
  border-radius: 10px;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  border: 1px solid var(--hairline);
  background: var(--bg-2);
  color: var(--text-2);
  transition: all var(--t-fast) var(--ease-out);
}

.pagination a:hover {
  color: var(--text-1);
  border-color: color-mix(in srgb, var(--brand) 60%, transparent);
  background: color-mix(in srgb, var(--brand) 14%, transparent);
  transform: translateY(-1px);
}

.pagination em {
  color: var(--on-action);
  background: linear-gradient(135deg, var(--action-brand), var(--action-purple));
  border-color: transparent;
  box-shadow: 0 6px 16px color-mix(in srgb, var(--brand) 40%, transparent);
}

.pagination .is-ellipsis {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  color: var(--text-mute);
  pointer-events: none;
}

.pagination [aria-disabled="true"]:not(.is-ellipsis) {
  color: var(--disabled-fg);
  background: var(--disabled-bg);
  border-color: var(--disabled-border);
  box-shadow: none;
  cursor: not-allowed;
}

/* ---------- Archive toolbar (文章库分页工具条) ---------- */
.archive-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.archive-summary {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--text-3);
}

.page-size {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--text-3);
}

.page-size-select {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.page-size-select select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  padding: 7px 30px 7px 12px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-1);
  background: var(--bg-2);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease-out), background var(--t-fast) var(--ease-out);
}

.page-size-select select:hover,
.page-size-select select:focus {
  border-color: color-mix(in srgb, var(--brand) 60%, transparent);
  background: color-mix(in srgb, var(--brand) 12%, transparent);
  outline: none;
}

.page-size-select select:focus-visible {
  border-color: var(--focus-ring);
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.page-size-select svg {
  position: absolute;
  right: 9px;
  pointer-events: none;
  color: var(--text-3);
}

.post-card[hidden] { display: none; }

/* ---------- Article (post page) ---------- */
.article {
  padding: clamp(28px, 4vw, 56px) clamp(22px, 5vw, 60px);
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow-2);
}

.article-header {
  margin-bottom: 36px;
  padding-bottom: 26px;
  border-bottom: 1px dashed var(--hairline);
}

.article-header h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(120deg, var(--text-1) 0%, color-mix(in srgb, var(--brand-2) 70%, var(--text-1)) 60%, var(--brand-3) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Prose typography ---------- */
.article-content {
  --prose-w: 72ch;
  font-size: 1.06rem;
  line-height: 1.85;
  color: var(--text-2);
  max-width: var(--prose-w);
  margin: 0 auto;
  word-wrap: break-word;
  overflow-wrap: break-word;
  font-feature-settings: "kern", "liga", "calt", "cv11";
  font-variant-numeric: oldstyle-nums proportional-nums;
}

.article-content > * + * {
  margin-top: 1.1em;
}

.article-content > h2 + *,
.article-content > h3 + *,
.article-content > h4 + * {
  margin-top: 0.6em;
}

.article-content p {
  margin: 0 0 1.1em;
  text-align: justify;
  text-justify: inter-character;
  hanging-punctuation: first last;
}

/* Drop cap on the first paragraph */
.article-content > p:first-of-type::first-letter {
  float: left;
  font-family: "Georgia", "Source Han Serif SC", "Songti SC", serif;
  font-size: 3.4em;
  line-height: 0.92;
  font-weight: 700;
  padding: 0.06em 0.12em 0 0;
  margin: 0.06em 0.12em 0 0;
  background: linear-gradient(135deg, var(--brand), var(--brand-2), var(--brand-3));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 4px 10px color-mix(in srgb, var(--brand) 40%, transparent));
}

/* Headings */
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
  color: var(--text-1);
  scroll-margin-top: 88px;
  position: relative;
  letter-spacing: -0.01em;
  font-weight: 700;
}

.article-content h2 {
  margin-top: 2.4em;
  padding-bottom: 10px;
  font-size: 1.55rem;
  display: flex;
  align-items: baseline;
  gap: 12px;
  border-bottom: 1px solid var(--hairline);
}

.article-content h2::before {
  content: "";
  display: inline-block;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background:
    radial-gradient(circle at 30% 30%, #fff 0 1px, transparent 2px),
    linear-gradient(135deg, var(--brand), var(--brand-3));
  box-shadow: 0 6px 16px color-mix(in srgb, var(--brand) 50%, transparent);
  transform: translateY(-1px);
}

.article-content h3 {
  margin-top: 2em;
  font-size: 1.24rem;
  padding-left: 14px;
}

.article-content h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  bottom: 0.25em;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--brand), var(--brand-3));
}

.article-content h4 {
  margin-top: 1.6em;
  font-size: 1.08rem;
  color: var(--accent-fg);
}

.article-content h4::before {
  content: "#";
  margin-right: 6px;
  color: color-mix(in srgb, var(--accent-fg) 72%, transparent);
  font-family: var(--font-mono);
}

/* Anchor link on headings (added by JS) */
.article-content .anchor {
  margin-left: 8px;
  color: var(--text-mute);
  opacity: 0;
  font-weight: 400;
  font-size: 0.85em;
  text-decoration: none;
  border: none;
  transition: opacity var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}

.article-content .anchor:focus-visible {
  opacity: 1;
  color: var(--content-link-hover-fg);
}

.article-content h2:hover .anchor,
.article-content h3:hover .anchor,
.article-content h4:hover .anchor {
  opacity: 1;
  color: var(--link-hover-fg);
}

/* Strong / em */
.article-content strong {
  color: var(--text-1);
  font-weight: 700;
  background: linear-gradient(180deg, transparent 60%, color-mix(in srgb, var(--brand) 22%, transparent) 60%);
  padding: 0 2px;
  border-radius: 2px;
}

.article-content em {
  color: var(--text-1);
  font-style: italic;
}

/* Blockquote */
.article-content blockquote {
  position: relative;
  margin: 1.8em 0;
  padding: 18px 22px 18px 54px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 10%, transparent), color-mix(in srgb, var(--brand-3) 6%, transparent));
  border: 1px solid color-mix(in srgb, var(--brand) 18%, transparent);
  color: var(--text-2);
  font-style: italic;
}

.article-content blockquote::before {
  content: "“";
  position: absolute;
  left: 14px;
  top: 8px;
  font-family: "Georgia", serif;
  font-size: 3.2em;
  line-height: 1;
  font-style: normal;
  color: color-mix(in srgb, var(--brand) 70%, transparent);
  text-shadow: 0 4px 16px color-mix(in srgb, var(--brand) 35%, transparent);
}

.article-content blockquote p {
  margin: 0 0 0.6em;
  text-align: left;
}

.article-content blockquote p:last-child {
  margin-bottom: 0;
}

.article-content blockquote cite {
  display: block;
  margin-top: 8px;
  font-size: 0.86em;
  color: var(--text-3);
  font-style: normal;
}

.article-content blockquote cite::before {
  content: "— ";
}

/* Inline code & kbd */
.article-content :not(pre) > code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 2px 7px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--brand) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
  color: var(--accent-fg);
  white-space: nowrap;
}

.article-content kbd {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 0.82em;
  color: var(--text-1);
  background: linear-gradient(180deg, var(--bg-3), var(--bg-2));
  border: 1px solid var(--surface-border);
  border-bottom-width: 2px;
  border-radius: 6px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05) inset;
  vertical-align: 0.05em;
}

/* Links */
.article-content :where(a:not(.anchor)) {
  color: var(--content-link-fg);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: color var(--t-fast) var(--ease-out), background-size var(--t-base) var(--ease-out);
  border: none;
}

.article-content :where(a:not(.anchor):hover) {
  color: var(--content-link-hover-fg);
  background-image: linear-gradient(90deg, var(--brand), var(--brand-3));
  background-size: 100% 2px;
  text-shadow: 0 0 10px color-mix(in srgb, var(--brand) 50%, transparent);
}

/* Lists */
.article-content ul,
.article-content ol {
  padding-left: 1.4em;
  margin: 1em 0;
}

.article-content li {
  margin: 0.45em 0;
  padding-left: 4px;
}

.article-content ul > li::marker {
  content: "▸ ";
  color: var(--brand-2);
  font-size: 0.95em;
}

.article-content ol {
  counter-reset: ol-counter;
  list-style: none;
  padding-left: 0;
}

.article-content ol > li {
  counter-increment: ol-counter;
  position: relative;
  padding-left: 2.4em;
}

.article-content ol > li::before {
  content: counter(ol-counter);
  position: absolute;
  left: 0;
  top: 0.15em;
  width: 1.6em;
  height: 1.6em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.78em;
  font-weight: 700;
  color: var(--on-action);
  background: linear-gradient(135deg, var(--action-brand), var(--action-purple));
  border-radius: 999px;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--brand) 35%, transparent);
}

/* Task lists (kramdown GFM) */
.article-content .task-list-item {
  list-style: none;
  padding-left: 0 !important;
}
.article-content .task-list-item::before { content: none !important; }
.article-content .task-list-item input[type="checkbox"] {
  accent-color: var(--brand);
  margin-right: 8px;
}

/* HR */
.article-content hr {
  border: none;
  height: 24px;
  margin: 2.4em 0;
  background:
    radial-gradient(circle, var(--brand) 1.2px, transparent 2px) center / 14px 14px repeat-x;
  mask-image: linear-gradient(90deg, transparent, #000 30%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 30%, #000 70%, transparent);
  opacity: 0.55;
}

/* Images & figure */
.article-content figure {
  margin: 1.8em 0;
  text-align: center;
}

.article-content img {
  border-radius: var(--radius-md);
  border: 1px solid var(--surface-border);
  margin: 1.2em auto;
  box-shadow: var(--shadow-1);
  cursor: zoom-in;
  transition: transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}

.article-content img:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

.article-content figcaption {
  margin-top: 8px;
  font-size: 0.86em;
  color: var(--text-3);
  text-align: center;
}

/* Responsive interview embeds inside long-form posts. */
.article-content .post-video {
  display: block;
  max-width: min(100%, 720px);
  margin: 2.2em auto;
}

.article-content .post-video-frame {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--surface-border);
  border-radius: 14px;
  background: #0b0b0b;
  box-shadow: var(--shadow-1);
}

.article-content .post-video-frame iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.article-content .post-video figcaption {
  max-width: 680px;
  margin: 12px auto 0;
  padding: 0 8px;
  line-height: 1.65;
}

.article-content .post-video figcaption a {
  white-space: nowrap;
}

/* Hero / poster figure: 用于 markdown 里 ![alt](url){: .post-figure } */
.article-content .post-figure,
.article-content figure.post-figure {
  display: block;
  margin: 2.4em auto;
  text-align: center;
  max-width: min(100%, 720px);
}

/* 同时兼容 markdown 把 .post-figure 直接挂在 <p> 上的写法（kramdown 默认行为） */
.article-content p.post-figure {
  display: block;
  margin: 2.4em auto;
  text-align: center;
  max-width: min(100%, 720px);
}

.article-content .post-figure img,
.article-content p.post-figure img {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid var(--surface-border);
  background:
    linear-gradient(var(--bg-2), var(--bg-2)) padding-box,
    linear-gradient(135deg,
      color-mix(in srgb, var(--brand) 70%, transparent),
      color-mix(in srgb, var(--brand-2) 40%, transparent) 50%,
      color-mix(in srgb, var(--brand-3) 70%, transparent)
    ) border-box;
  padding: 4px;
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.45),
    0 0 0 1px var(--surface-border),
    0 0 24px color-mix(in srgb, var(--brand) 14%, transparent);
  transition:
    transform var(--t-base) var(--ease-out),
    box-shadow var(--t-base) var(--ease-out);
  cursor: zoom-in;
}

/* Portrait cat image: keep the vertical composition intimate without dominating the article. */
.article-content .post-figure--cat-portrait,
.article-content figure.post-figure--cat-portrait {
  max-width: min(100%, 420px);
}

.article-content .post-figure--cat-portrait .post-cat-portrait {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 16;
  margin: 0 auto;
  padding: 4px;
  border: 1px solid transparent;
  border-radius: 18px;
  background:
    linear-gradient(var(--bg-2), var(--bg-2)) padding-box,
    linear-gradient(145deg, #fff8fc, #f1c2dc 26%, #c9b9ff 58%, #ffe2aa 84%, #fffdf7) border-box;
  box-shadow:
    0 30px 74px rgba(0, 0, 0, 0.4),
    0 0 44px rgba(220, 145, 255, 0.16),
    0 0 0 1px rgba(255, 235, 247, 0.16);
  cursor: pointer;
  object-fit: cover;
  touch-action: manipulation;
  -webkit-user-drag: none;
  user-select: none;
  -webkit-user-select: none;
}

.article-content .post-cat-portrait:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 5px;
}

.cat-interaction-hint,
.cat-response,
.cat-particle {
  position: absolute;
  z-index: 4;
  pointer-events: none;
}

.cat-interaction-hint {
  left: 50%;
  bottom: 48px;
  padding: 6px 11px;
  border: 1px solid rgba(255, 188, 218, 0.56);
  border-radius: 999px;
  color: rgba(116, 60, 87, 0.9);
  background: rgba(255, 249, 252, 0.88);
  box-shadow: 0 8px 24px rgba(138, 73, 105, 0.16);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  font: 700 0.68rem/1.2 var(--font-mono);
  letter-spacing: 0.06em;
  opacity: 0.84;
  transform: translateX(-50%);
  transition: opacity 180ms ease, transform 220ms var(--ease-out);
  white-space: nowrap;
}

.post-figure--cat-portrait:hover .cat-interaction-hint,
.post-figure--cat-portrait:focus-within .cat-interaction-hint,
.post-figure--cat-portrait.is-purring .cat-interaction-hint {
  opacity: 1;
  transform: translateX(-50%) translateY(-3px);
}

.cat-response {
  left: 50%;
  bottom: 96px;
  min-width: 82px;
  padding: 8px 13px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 15px 15px 15px 4px;
  color: #844563;
  background: linear-gradient(135deg, rgba(255, 252, 253, 0.96), rgba(255, 223, 238, 0.94));
  box-shadow: 0 12px 34px rgba(130, 66, 98, 0.22), 0 0 22px rgba(233, 150, 255, 0.18);
  font-size: 0.78rem;
  font-weight: 750;
  opacity: 0;
  transform: translate(-50%, 10px) scale(0.9);
  transition: opacity 180ms ease, transform 260ms var(--ease-out);
  white-space: nowrap;
}

.cat-response.is-visible {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
}

.cat-particle {
  left: var(--cat-x);
  top: var(--cat-y);
  color: #ff85b7;
  font-size: 1.05rem;
  filter: drop-shadow(0 4px 8px rgba(126, 56, 92, 0.28));
  animation: cat-particle-float 920ms var(--ease-out) var(--cat-delay) both;
}

.article-content .post-cat-portrait.is-petted {
  animation: cat-pet 620ms var(--ease-out) both;
}

.post-figure--cat-portrait.is-purring .post-cat-portrait {
  box-shadow:
    0 32px 78px rgba(0, 0, 0, 0.42),
    0 0 54px rgba(255, 137, 190, 0.28),
    0 0 0 1px rgba(255, 235, 247, 0.3);
}

@keyframes cat-pet {
  0%, 100% { transform: translateY(0) rotate(0) scale(1); }
  32% { transform: translateY(-6px) rotate(-1.2deg) scale(1.018); }
  66% { transform: translateY(-2px) rotate(0.8deg) scale(1.008); }
}

@keyframes cat-particle-float {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.45) rotate(0);
  }
  18% { opacity: 1; }
  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--cat-dx)), calc(-50% + var(--cat-dy))) scale(1.18) rotate(var(--cat-rotate));
  }
}

@media (max-width: 680px) {
  .article-content .post-figure--cat-portrait,
  .article-content figure.post-figure--cat-portrait {
    max-width: min(100%, 320px);
  }
  .cat-interaction-hint { bottom: 44px; font-size: 0.64rem; }
  .cat-response { bottom: 88px; font-size: 0.74rem; }
}

@media (prefers-reduced-motion: reduce) {
  .article-content .post-cat-portrait.is-petted { animation: none; }
  .cat-particle { animation: cat-particle-fade 520ms ease-out var(--cat-delay) both; }
}

@keyframes cat-particle-fade {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.75); }
  35% { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -70%) scale(1); }
}

.article-content .post-figure img:hover,
.article-content p.post-figure img:hover {
  transform: translateY(-3px) scale(1.005);
  box-shadow:
    0 32px 80px rgba(0, 0, 0, 0.55),
    0 0 0 1px color-mix(in srgb, var(--brand) 35%, transparent),
    0 0 36px color-mix(in srgb, var(--brand) 22%, transparent);
}

/* 用 alt 文本自动生成图注（不需要在 markdown 里再写一行） */
.article-content p.post-figure {
  position: relative;
}

.article-content figure.post-figure figcaption,
.article-content p.post-figure + .post-figure-caption,
.article-content .post-gallery + .post-figure-caption {
  display: block;
  margin: 12px auto 0;
  font-size: 0.84em;
  color: var(--text-3);
  letter-spacing: 0.02em;
  text-align: center;
  max-width: min(100%, 720px);
}

[data-theme="light"] .article-content .post-figure img,
[data-theme="light"] .article-content p.post-figure img {
  box-shadow:
    0 16px 40px rgba(20, 30, 60, 0.14),
    0 0 0 1px var(--surface-border),
    0 0 18px color-mix(in srgb, var(--brand) 10%, transparent);
}

[data-theme="light"] .article-content .post-figure img:hover,
[data-theme="light"] .article-content p.post-figure img:hover {
  box-shadow:
    0 22px 50px rgba(20, 30, 60, 0.2),
    0 0 0 1px color-mix(in srgb, var(--brand) 30%, transparent),
    0 0 28px color-mix(in srgb, var(--brand) 18%, transparent);
}

/* Photo gallery: 2x2 grid for inline post galleries
   用法：在 markdown 里写一段原生 HTML
   <div class="post-gallery">
     <figure><img src="..." alt=""><figcaption>说明</figcaption></figure>
     ...
   </div>
*/
.article-content .post-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 2.4em auto;
  max-width: min(100%, 880px);
}

.article-content .post-gallery figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.article-content .post-gallery img,
.article-content .post-gallery video {
  display: block;
  width: 100%;
  height: 100%;
  max-height: 360px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--surface-border);
  background:
    linear-gradient(var(--bg-2), var(--bg-2)) padding-box,
    linear-gradient(135deg,
      color-mix(in srgb, var(--brand) 60%, transparent),
      color-mix(in srgb, var(--brand-2) 35%, transparent) 50%,
      color-mix(in srgb, var(--brand-3) 60%, transparent)
    ) border-box;
  padding: 3px;
  box-shadow:
    0 16px 36px rgba(0, 0, 0, 0.4),
    0 0 0 1px var(--surface-border);
  transition:
    transform var(--t-base) var(--ease-out),
    box-shadow var(--t-base) var(--ease-out);
  cursor: zoom-in;
}

.article-content .post-gallery video {
  cursor: default;
}

.article-content .post-gallery img:hover,
.article-content .post-gallery video:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow:
    0 24px 56px rgba(0, 0, 0, 0.55),
    0 0 0 1px color-mix(in srgb, var(--brand) 35%, transparent),
    0 0 28px color-mix(in srgb, var(--brand) 22%, transparent);
}

.article-content .post-gallery figcaption {
  margin-top: 10px;
  font-size: 0.78em;
  color: var(--text-3);
  letter-spacing: 0.02em;
  text-align: center;
  line-height: 1.5;
}

[data-theme="light"] .article-content .post-gallery img,
[data-theme="light"] .article-content .post-gallery video {
  box-shadow:
    0 12px 28px rgba(20, 30, 60, 0.12),
    0 0 0 1px var(--surface-border);
}

[data-theme="light"] .article-content .post-gallery img:hover,
[data-theme="light"] .article-content .post-gallery video:hover {
  box-shadow:
    0 18px 40px rgba(20, 30, 60, 0.18),
    0 0 0 1px color-mix(in srgb, var(--brand) 30%, transparent),
    0 0 22px color-mix(in srgb, var(--brand) 16%, transparent);
}

@media (max-width: 640px) {
  .article-content .post-gallery {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .article-content .post-gallery img,
  .article-content .post-gallery video {
    max-height: 420px;
  }
}

/* Tables */
.article-content .table-wrap {
  margin: 1.6em 0;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--surface-border);
  background: var(--bg-2);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.article-content table {
  width: 100%;
  min-width: max-content;
  border-collapse: separate;
  border-spacing: 0;
  margin: 0;
  border: none;
  font-size: 0.94rem;
}

.article-content thead th {
  position: sticky;
  top: 0;
  background: linear-gradient(180deg, color-mix(in srgb, var(--brand) 22%, var(--bg-2)), var(--bg-2));
  color: var(--text-1);
  text-align: left;
  font-weight: 700;
  font-size: 0.86rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 12px 16px;
  border-bottom: 1px solid color-mix(in srgb, var(--brand) 30%, transparent);
}

.article-content tbody td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--hairline);
  color: var(--text-2);
}

.article-content tbody tr:nth-child(odd) td {
  background: color-mix(in srgb, var(--brand) 4%, transparent);
}

.article-content tbody tr:last-child td {
  border-bottom: none;
}

.article-content tbody tr {
  transition: background var(--t-fast) var(--ease-out);
}

.article-content tbody tr:hover td {
  background: color-mix(in srgb, var(--brand) 10%, transparent);
}

/* Footnotes (kramdown) */
.article-content .footnotes {
  margin-top: 3em;
  padding-top: 1.4em;
  border-top: 1px dashed var(--hairline);
  font-size: 0.92rem;
  color: var(--text-3);
}

.article-content sup a {
  font-family: var(--font-mono);
  background: color-mix(in srgb, var(--brand) 14%, transparent);
  padding: 0 5px;
  border-radius: 4px;
}

/* ---------- Table of contents ---------- */
.toc {
  margin: 0 0 28px;
  padding: 18px 22px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 8%, var(--bg-2)), var(--bg-2));
  border: 1px solid var(--surface-border);
}

.toc-title {
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  font-family: inherit;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.toc-title:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 6px;
  border-radius: 4px;
}

.toc-title::before {
  content: "";
  width: 6px;
  height: 14px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--brand), var(--brand-3));
}

.toc-title .chev {
  margin-left: auto;
  transition: transform var(--t-fast) var(--ease-out);
}

.toc[data-collapsed="true"] .chev { transform: rotate(-90deg); }
.toc[data-collapsed="true"] .toc-list { display: none; }

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  counter-reset: toc;
}

.toc-list li {
  margin: 0;
}

.toc-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--text-3);
  text-decoration: none;
  border: 1px solid transparent;
  transition: all var(--t-fast) var(--ease-out);
}

.toc-list a::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-mute);
  flex-shrink: 0;
  transition: all var(--t-fast) var(--ease-out);
}

.toc-list a:hover {
  color: var(--text-1);
  background: color-mix(in srgb, var(--brand) 10%, transparent);
}

.toc-list a.is-active {
  color: var(--text-1);
  background: color-mix(in srgb, var(--brand) 14%, transparent);
  border-color: color-mix(in srgb, var(--brand) 30%, transparent);
}

.toc-list a.is-active::before {
  background: var(--brand-2);
  width: 8px;
  height: 8px;
  box-shadow: 0 0 8px var(--brand-2);
}

.toc-list .toc-h3 a {
  padding-left: 28px;
  font-size: 0.86rem;
}

.toc-list .toc-h4 a {
  padding-left: 44px;
  font-size: 0.82rem;
  color: var(--text-mute);
}

/* ---------- Image lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  width: 100vw;
  max-width: none;
  height: 100vh;
  height: 100dvh;
  max-height: none;
  margin: 0;
  border: 0;
  background: rgba(2, 4, 12, 0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-base) var(--ease-out), visibility var(--t-base);
  cursor: zoom-out;
  padding: 30px;
}

.lightbox[open] {
  display: flex;
}

.lightbox::backdrop {
  background: transparent;
}

.lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox figure {
  max-width: 100%;
  max-height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  cursor: default;
}

.lightbox img {
  max-width: 100%;
  max-height: calc(100dvh - 110px);
  border-radius: var(--radius-md);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.7);
  transform: scale(0.94);
  transition: transform var(--t-base) var(--ease-out);
}

.lightbox.is-open img {
  transform: scale(1);
}

.lightbox figcaption {
  max-width: min(760px, 90vw);
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.86rem;
  line-height: 1.5;
  text-align: center;
}

.lightbox-close {
  position: fixed;
  top: max(18px, env(safe-area-inset-top, 0px));
  right: max(18px, env(safe-area-inset-right, 0px));
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: #fff;
  background: rgba(16, 20, 38, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  cursor: pointer;
  z-index: 1;
}

.lightbox-close svg { width: 20px; height: 20px; }

/* Warm photo treatment: keep the cat portrait bright and comforting in preview. */
.lightbox[data-theme="warm"] {
  background:
    radial-gradient(circle at 24% 20%, rgba(255, 255, 255, 0.98), rgba(255, 230, 242, 0.92) 34%, transparent 62%),
    radial-gradient(circle at 80% 18%, rgba(242, 232, 255, 0.94), transparent 52%),
    linear-gradient(145deg, rgba(255, 247, 251, 0.96), rgba(255, 222, 235, 0.93) 58%, rgba(239, 231, 255, 0.94));
  backdrop-filter: blur(10px) saturate(1.02);
  -webkit-backdrop-filter: blur(10px) saturate(1.02);
}

.lightbox[data-theme="warm"] img {
  box-shadow:
    0 28px 72px rgba(150, 70, 110, 0.2),
    0 0 0 1px rgba(255, 255, 255, 0.72),
    0 0 48px rgba(220, 145, 255, 0.19);
}

.lightbox[data-theme="warm"] figcaption {
  color: rgba(112, 55, 83, 0.84);
}

.lightbox[data-theme="warm"] .lightbox-close {
  color: #934b6b;
  background: rgba(255, 249, 252, 0.84);
  border-color: rgba(194, 96, 141, 0.22);
  box-shadow: 0 8px 24px rgba(151, 72, 112, 0.15);
}

.article-content img.image-zoom {
  cursor: zoom-in;
}

.article-content img.image-zoom:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 4px;
}

.article-footer {
  margin-top: 36px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.article-footer .nav-prev,
.article-footer .nav-next {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-2);
  border: 1px solid var(--surface-border);
  color: var(--text-2);
  transition: all var(--t-fast) var(--ease-out);
}

.article-footer .nav-prev:hover,
.article-footer .nav-next:hover {
  color: var(--text-1);
  border-color: color-mix(in srgb, var(--brand) 50%, transparent);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--brand) 22%, transparent);
}

.article-footer .nav-next {
  text-align: right;
}

.article-footer .label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

/* ---------- Page (about / doc) ---------- */
.page {
  padding: 36px clamp(20px, 4vw, 44px);
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow-2);
}

/* page-bare：用于自带 hero 的页面（cate / doc / category），
   去掉外层玻璃容器，让 hero 与列表卡片直接落在主背景上，
   保持与 landing / about 一致的视觉层级。 */
.page-bare {
  padding: 0;
  background: transparent;
  border: none;
  -webkit-backdrop-filter: none;
          backdrop-filter: none;
  box-shadow: none;
  border-radius: 0;
}

.page-header {
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  background: linear-gradient(120deg, var(--text-1), color-mix(in srgb, var(--brand-2) 60%, var(--text-1)));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-content {
  color: var(--text-2);
  line-height: 1.8;
}

.page-content h2 {
  margin-top: 1.6em;
  font-size: 1.35rem;
  color: var(--text-1);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--hairline);
}

.page-content h3 {
  font-size: 1.12rem;
  color: var(--text-1);
}

.page-content :where(a) {
  color: var(--content-link-fg);
  border-bottom: 1px dashed color-mix(in srgb, var(--content-link-fg) 75%, transparent);
}

.page-content :where(a:hover) {
  color: var(--content-link-hover-fg);
  border-bottom-color: var(--content-link-hover-fg);
}

.page-content ul {
  padding-left: 1.4em;
}

.page-content ul li {
  margin-bottom: 6px;
}

.page-content ul li::marker {
  color: var(--brand-2);
}

/* doc.html link cards */
.link-category {
  margin-bottom: 22px;
  padding: 22px;
  border-radius: var(--radius-lg);
  background: var(--bg-2);
  border: 1px solid var(--surface-border);
  transition: all var(--t-base) var(--ease-out);
}

.link-category:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--brand) 40%, transparent);
  box-shadow: 0 16px 40px color-mix(in srgb, var(--brand) 22%, transparent);
}

.link-category h2 {
  margin: 0 0 14px;
  font-size: 1.1rem;
  color: var(--accent-fg);
  border-bottom: none;
  padding: 0;
}

.link-category ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.link-category li {
  margin: 0;
}

.link-category a {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--hairline);
  background: var(--bg-3);
  color: var(--text-2);
  border-bottom: 1px solid var(--hairline);
}

.link-category a:hover {
  color: var(--text-1);
  border-color: color-mix(in srgb, var(--brand) 60%, transparent);
  background: color-mix(in srgb, var(--brand) 10%, var(--bg-3));
}

/* ---------- Category page ---------- */
.cate-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 28px;
}

.cate-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--bg-2);
  border: 1px solid var(--surface-border);
  color: var(--text-2);
  font-size: 0.92rem;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease-out);
}

.cate-chip .count {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand) 16%, transparent);
  color: var(--accent-fg);
}

.cate-chip:hover,
.cate-chip.is-active {
  color: var(--text-1);
  border-color: color-mix(in srgb, var(--brand) 60%, transparent);
  background: color-mix(in srgb, var(--brand) 14%, var(--bg-2));
  transform: translateY(-2px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--brand) 24%, transparent);
}

.cate-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cate-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-2);
  border: 1px solid var(--hairline);
  transition: all var(--t-fast) var(--ease-out);
}

.cate-list li:hover {
  transform: translateX(4px);
  border-color: color-mix(in srgb, var(--brand) 50%, transparent);
  background: color-mix(in srgb, var(--brand) 8%, var(--bg-2));
}

.cate-list a {
  color: var(--text-1);
  font-weight: 500;
  flex: 1;
  border-bottom: none;
}

.cate-list .date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-3);
  white-space: nowrap;
}

.cate-empty {
  padding: 24px;
  text-align: center;
  color: var(--text-3);
  border-radius: var(--radius-md);
  border: 1px dashed var(--surface-border);
  background: var(--bg-2);
}

/* ---------- 404 ---------- */
.notfound {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 20px;
}

.notfound-inner {
  max-width: 480px;
}

.notfound-code {
  font-family: var(--font-mono);
  font-size: clamp(5rem, 18vw, 9rem);
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--brand), var(--brand-2), var(--brand-3));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 6px 30px color-mix(in srgb, var(--brand) 45%, transparent));
  animation: glitch 4.5s var(--ease-in-out) infinite;
}

@keyframes glitch {
  0%, 100% { letter-spacing: 0; }
  20% { letter-spacing: 0.04em; }
  21% { letter-spacing: -0.02em; transform: translateX(2px); }
  22% { letter-spacing: 0; transform: translateX(0); }
  60% { transform: translateX(-2px); }
  61% { transform: translateX(0); }
}

.notfound h1 {
  font-size: 1.4rem;
  margin: 16px 0 6px;
}

.notfound p {
  color: var(--text-3);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--brand) 50%, transparent);
  background: color-mix(in srgb, var(--brand) 18%, transparent);
  color: var(--text-1);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--t-fast) var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
  background: color-mix(in srgb, var(--brand) 30%, transparent);
  border-color: var(--brand);
  box-shadow: 0 12px 28px color-mix(in srgb, var(--brand) 35%, transparent);
}

/* ---------- Command palette search ---------- */
.search-dialog {
  width: min(720px, calc(100vw - 32px));
  max-width: 720px;
  max-height: min(78vh, 720px);
  margin: auto;
  padding: 0;
  color: var(--text-1);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--brand) 10%, var(--surface-strong)), var(--surface-strong));
  border: 1px solid color-mix(in srgb, var(--brand) 38%, var(--surface-border));
  border-radius: var(--radius-xl);
  box-shadow: 0 36px 100px rgba(0, 0, 0, 0.65), 0 0 0 1px var(--hairline) inset;
  overflow: hidden;
}

.search-dialog[open] {
  display: block;
  animation: search-dialog-in 360ms var(--ease-out) both;
}

.search-dialog::backdrop {
  background: rgba(3, 5, 14, 0.72);
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
}

@keyframes search-dialog-in {
  from { opacity: 0; transform: translateY(18px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.search-dialog__panel {
  display: flex;
  flex-direction: column;
  max-height: min(78vh, 720px);
  padding: 24px;
}

.search-dialog__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.search-dialog__header h2 {
  margin: 2px 0 0;
  font-size: 1.35rem;
}

.search-dialog__eyebrow {
  font: 600 0.72rem/1.4 var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-fg);
}

.search-dialog__close {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: var(--text-2);
  background: var(--bg-2);
  border: 1px solid var(--surface-border);
  border-radius: 11px;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}

.search-dialog__close:hover {
  color: var(--text-1);
  border-color: var(--brand);
  transform: rotate(5deg) scale(1.04);
}

.search-dialog__close svg {
  width: 18px;
  height: 18px;
}

.search-box {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: color-mix(in srgb, var(--bg-2) 92%, transparent);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-md);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--brand) 30%, transparent);
  transition: border-color var(--t-fast) var(--ease-out), box-shadow var(--t-fast) var(--ease-out);
}

.search-box:focus-within {
  border-color: var(--focus-ring);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--focus-ring) 14%, transparent);
}

.search-box > svg {
  width: 20px;
  height: 20px;
  color: var(--accent-fg);
}

.search-box input {
  width: 100%;
  min-width: 0;
  padding: 0;
  color: var(--text-1);
  background: transparent;
  border: 0;
  outline: 0;
  font: 500 1rem/1.5 var(--font-sans);
}

.search-box input::placeholder { color: var(--text-mute); }
.search-box input::-webkit-search-cancel-button { display: none; }

.search-box kbd {
  padding: 3px 7px;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  color: var(--text-3);
  background: var(--bg-3);
  font: 600 0.65rem/1.4 var(--font-mono);
}

.search-dialog__help,
.search-status {
  margin: 10px 2px 0;
  font-size: 0.78rem;
  color: var(--text-3);
}

.search-results {
  min-height: 86px;
  margin-top: 14px;
  padding-right: 4px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.search-result {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 14px;
  padding: 14px 15px;
  color: var(--text-2);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  transition: color var(--t-fast) var(--ease-out), background var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}

.search-result + .search-result { margin-top: 6px; }

.search-result:hover,
.search-result.is-active {
  color: var(--text-1);
  background: color-mix(in srgb, var(--brand) 12%, var(--bg-2));
  border-color: color-mix(in srgb, var(--brand) 34%, transparent);
  transform: translateX(3px);
}

.search-result__title {
  min-width: 0;
  font-weight: 700;
  color: inherit;
}

.search-result__date {
  color: var(--text-3);
  font: 500 0.76rem/1.6 var(--font-mono);
  white-space: nowrap;
}

.search-result__excerpt {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--text-3);
  font-size: 0.86rem;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.search-result__meta {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--accent-fg);
  font: 500 0.7rem/1.4 var(--font-mono);
}

.search-empty {
  display: grid;
  place-items: center;
  min-height: 120px;
  padding: 22px;
  text-align: center;
  color: var(--text-3);
  border: 1px dashed var(--surface-border);
  border-radius: var(--radius-md);
}

.has-modal-open { overflow: hidden; }

@media (max-width: 520px) {
  .search-dialog {
    width: calc(100vw - 20px);
    max-height: calc(100dvh - 20px);
    border-radius: var(--radius-lg);
  }

  .search-dialog__panel {
    max-height: calc(100dvh - 20px);
    padding: 18px 14px 14px;
  }

  .search-dialog__header { margin-bottom: 14px; }
  .search-dialog__header h2 { font-size: 1.18rem; }
  .search-dialog__help { display: none; }
  .search-results { margin-top: 10px; }
  .search-result { padding: 12px; }
  .search-result__date { display: none; }
  .search-box kbd { display: none; }
}

/* ---------- Floating widgets ---------- */
.fab {
  position: fixed;
  right: 22px;
  bottom: 26px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--action-brand), var(--action-purple));
  color: var(--on-action);
  border: none;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  transition: all var(--t-base) var(--ease-out);
  z-index: 90;
  box-shadow: 0 12px 32px color-mix(in srgb, var(--brand) 50%, transparent);
}

.fab.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.fab:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 18px 36px color-mix(in srgb, var(--brand) 60%, transparent);
}

.fab svg {
  width: 20px;
  height: 20px;
}

/* ---------- Mobile ---------- */
.menu-toggle {
  display: none;
  position: fixed;
  top: 16px;
  left: 16px;
  width: 42px;
  height: 42px;
  z-index: 80;
  border-radius: 12px;
  background: var(--surface-strong);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-1);
  position: relative;
  transition: all var(--t-fast) var(--ease-out);
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--text-1);
  transition: all var(--t-fast) var(--ease-out);
}

.menu-toggle span::before { top: -6px; }
.menu-toggle span::after { top: 6px; }

.is-menu-open .menu-toggle span { background: transparent; }
.is-menu-open .menu-toggle span::before { top: 0; transform: rotate(45deg); }
.is-menu-open .menu-toggle span::after { top: 0; transform: rotate(-45deg); }

.scrim {
  position: fixed;
  inset: 0;
  background: rgba(4, 6, 14, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--t-base) var(--ease-out);
  z-index: 40;
}

.is-menu-open .scrim {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 920px) {
  :root { --sidebar-w: 260px; }

  .app {
    grid-template-columns: 1fr;
  }

  /* 移动端单列布局下，让 main 落回第一列；
     桌面端 grid 是 sidebar | main 两列，main 写死了 grid-column: 2，
     单列模式必须重置，否则浏览器会创建隐式第 2 列把内容挤到右侧 */
  .app > .main {
    grid-column: 1;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    height: 100dvh;
    width: var(--sidebar-w);
    transform: translateX(-105%);
    transition: transform var(--t-base) var(--ease-out);
    box-shadow: 24px 0 50px rgba(0, 0, 0, 0.45);
    border-right: 1px solid var(--surface-border);
  }

  .is-menu-open .sidebar {
    transform: translateX(0);
  }

  .main {
    padding: 70px 16px 80px;
  }

  .article-footer {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .hero {
    padding: 24px 18px;
  }
  .post-card {
    padding: 18px;
  }
  .article {
    padding: 22px 16px;
  }
  .page {
    padding: 22px 16px;
  }
}

/* ---------- Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity var(--t-slow) var(--ease-out),
    transform var(--t-slow) var(--ease-out);
}

.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .bg-aurora,
  .bg-grid {
    animation: none !important;
  }
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none !important;
  }
  .read-progress {
    animation-duration: auto !important;
    transition: none !important;
  }
}


/* ==========================================================================
   Landing page (AI hero)
   ========================================================================== */

.bg-neural {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  opacity: 0;
  transition: opacity 800ms var(--ease-out);
}

.is-landing .bg-neural { opacity: 1; }
.is-landing .bg-grid { opacity: 0.55; }

/* When landing, drop main padding for full-bleed sections */
.is-landing .main {
  padding: 32px clamp(20px, 4vw, 56px) 80px;
  max-width: 1200px;
}

@media (max-width: 920px) {
  .is-landing .main { padding-top: 70px; }
}

.grad-text {
  background: linear-gradient(120deg, var(--brand) 0%, var(--brand-2) 50%, var(--brand-3) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 8px 24px color-mix(in srgb, var(--brand) 40%, transparent));
}

.grad-text-2 {
  background: linear-gradient(120deg, var(--brand-3) 0%, var(--brand) 60%, var(--brand-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Hero ---------- */
.landing-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  align-items: center;
  padding: 56px clamp(20px, 4vw, 44px);
  margin: 8px 0 28px;
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}

.landing-hero::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 80%, transparent), transparent 40%, color-mix(in srgb, var(--brand-3) 80%, transparent));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
  animation: borderShine 6s linear infinite;
  background-size: 200% 200%;
}

@keyframes borderShine {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

.landing-hero-inner { position: relative; z-index: 1; }

.hero-title {
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 18px 0 18px;
}

.hero-title-line {
  display: block;
  opacity: 0;
  transform: translateY(16px);
  animation: rise 0.8s var(--ease-out) forwards;
}

.hero-title-line:nth-child(2) { animation-delay: 120ms; }

@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

.hero-typed {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  color: var(--text-2);
  margin: 0 0 26px;
  min-height: 1.7em;
}

.hero-typed .caret {
  color: var(--brand-2);
  margin-left: 4px;
  animation: caret 1s steps(2) infinite;
}

@keyframes caret {
  50% { opacity: 0; }
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--action-brand) 0%, var(--action-purple) 100%);
  border: 1px solid transparent;
  color: var(--on-action);
  box-shadow: 0 14px 32px color-mix(in srgb, var(--brand) 40%, transparent);
}

.btn-primary:hover {
  color: var(--on-action);
  background: linear-gradient(135deg, var(--action-cyan) 0%, var(--action-brand) 100%);
  box-shadow: 0 18px 36px color-mix(in srgb, var(--brand) 60%, transparent);
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--surface-border);
  color: var(--text-1);
}

.btn-ghost:hover {
  border-color: color-mix(in srgb, var(--brand) 50%, transparent);
  background: color-mix(in srgb, var(--brand) 10%, transparent);
}

.landing-hero .hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 6px;
}

.landing-hero .hero-stats .stat {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-2);
  border: 1px solid var(--hairline);
  transition: all var(--t-fast) var(--ease-out);
}

.landing-hero .hero-stats .stat:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--brand) 50%, transparent);
  background: color-mix(in srgb, var(--brand) 8%, var(--bg-2));
}

.landing-hero .hero-stats .num {
  font-size: 1.6rem;
  background: linear-gradient(135deg, var(--brand-2), var(--brand));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Terminal ---------- */
.landing-terminal {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(160deg, #0a0e1c 0%, #0d1226 100%);
  border: 1px solid var(--surface-border);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45), 0 0 60px color-mix(in srgb, var(--brand) 16%, transparent);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  transform: perspective(1200px) rotateY(-6deg) rotateX(2deg);
  transition: transform var(--t-base) var(--ease-out);
}

.landing-terminal:hover {
  transform: perspective(1200px) rotateY(-2deg) rotateX(0);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: linear-gradient(180deg, #161b2c, #11162a);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.t-dot {
  width: 12px; height: 12px; border-radius: 50%;
}
.t-dot-r { background: #ff5f56; }
.t-dot-y { background: #ffbd2e; }
.t-dot-g { background: #27c93f; }

.t-title {
  margin-left: 12px;
  color: #8693b6;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.terminal-body {
  padding: 16px 18px 22px;
  color: #d8e0ff;
  line-height: 1.85;
}

.t-line {
  opacity: 0;
  animation: t-fade 0.5s var(--ease-out) forwards;
}

.t-line:nth-child(1) { animation-delay: 0.4s; }
.t-line:nth-child(2) { animation-delay: 0.9s; }
.t-line:nth-child(3) { animation-delay: 1.3s; }
.t-line:nth-child(4) { animation-delay: 1.7s; }
.t-line:nth-child(5) { animation-delay: 2.1s; }
.t-line:nth-child(6) { animation-delay: 2.5s; }
.t-line:nth-child(7) { animation-delay: 2.9s; }
.t-line:nth-child(8) { animation-delay: 3.3s; }
.t-line:nth-child(9) { animation-delay: 3.7s; }
.landing-terminal .t-line:nth-child(10) { animation-delay: 4.1s; }
.landing-terminal .t-line:nth-child(11) { animation-delay: 4.5s; }
.landing-terminal .t-line:nth-child(12) { animation-delay: 4.9s; }
.landing-terminal .t-line:nth-child(13) { animation-delay: 5.3s; }
.landing-terminal .t-line:nth-child(14) { animation-delay: 5.7s; }
.landing-terminal .t-line:nth-child(15) { animation-delay: 6.1s; }

@keyframes t-fade {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.t-prompt { color: var(--brand-2); margin-right: 4px; }
.t-cmd    { color: #b888ff; }
.t-arg    { color: #7cffb4; }
.t-out    { color: #c8d0e7; }
.t-hl     { color: var(--brand-2); font-weight: 700; }
.t-warn   { color: #fbbf24; }
.t-dim    { color: #5d6a8b; }

.t-cursor {
  color: var(--brand-2);
  animation: caret 1s steps(2) infinite;
}

/* ---------- Marquee ---------- */
.marquee {
  position: relative;
  margin: 28px 0;
  padding: 14px 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  font-family: var(--font-mono);
  color: var(--text-3);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
}

.marquee-track {
  display: inline-block;
  white-space: nowrap;
  animation: marquee 38s linear infinite;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-66.66%); }
}

/* ---------- Section Head ---------- */
.landing-section { margin: 56px 0; }

/* ---------- Profile spotlight card ---------- */
.profile-spotlight { margin-top: 8px; }

.profile-card {
  position: relative;
  display: block;
  border-radius: var(--radius-lg);
  padding: 1px;
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--brand) 55%, transparent) 0%,
      color-mix(in srgb, var(--brand-2) 50%, transparent) 50%,
      color-mix(in srgb, #b888ff 50%, transparent) 100%);
  overflow: hidden;
  isolation: isolate;
  color: var(--text-1);
  transition: transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}

.profile-card:hover {
  color: var(--text-1);
  transform: translateY(-3px);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.32);
}

.profile-card-glow {
  position: absolute;
  inset: -40%;
  z-index: 0;
  background:
    radial-gradient(40% 40% at 20% 30%, color-mix(in srgb, var(--brand) 40%, transparent), transparent 70%),
    radial-gradient(35% 35% at 80% 70%, color-mix(in srgb, var(--brand-2) 35%, transparent), transparent 70%);
  filter: blur(32px);
  opacity: 0.65;
  pointer-events: none;
  animation: profile-glow 12s ease-in-out infinite alternate;
}

.profile-card-grid {
  position: absolute;
  inset: 1px;
  z-index: 0;
  border-radius: calc(var(--radius-lg) - 1px);
  background-image:
    linear-gradient(color-mix(in srgb, var(--brand-2) 7%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--brand-2) 7%, transparent) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(90deg, transparent 28%, #000 72%);
  -webkit-mask-image: linear-gradient(90deg, transparent 28%, #000 72%);
  opacity: 0.7;
  pointer-events: none;
}

@keyframes profile-glow {
  from { transform: translate3d(-2%, -2%, 0) scale(1); }
  to   { transform: translate3d(3%, 4%, 0) scale(1.08); }
}

.profile-card-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
  gap: 28px clamp(28px, 4vw, 54px);
  background: var(--surface);
  border-radius: calc(var(--radius-lg) - 1px);
  padding: 34px 36px 24px;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
}

.profile-card-copy {
  min-width: 0;
  align-self: center;
}

.profile-card-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-fg);
  margin-bottom: 14px;
}

.profile-card-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-2);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand-2) 25%, transparent);
}

.profile-card-title {
  margin: 0 0 14px;
  font-size: clamp(1.55rem, 2.7vw, 2.2rem);
  letter-spacing: -0.01em;
  line-height: 1.22;
  color: var(--text-1);
}

.profile-card-desc {
  margin: 0 0 14px;
  color: var(--text-2);
  font-size: 0.98rem;
  line-height: 1.75;
  max-width: 650px;
}

.profile-card-principle {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 18px;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--text-3);
}

.profile-card-principle span {
  flex: 0 0 auto;
  padding: 2px 7px;
  border-radius: 5px;
  background: color-mix(in srgb, var(--brand-2) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand-2) 22%, transparent);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  color: var(--accent-fg);
}

.profile-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
}

.profile-card-tags span {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand) 30%, transparent);
  color: var(--text-2);
}

.profile-delivery {
  position: relative;
  min-width: 0;
  align-self: stretch;
  padding: 18px;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, var(--brand-2) 22%, var(--hairline));
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--bg-2) 88%, transparent), color-mix(in srgb, var(--brand) 7%, var(--bg-2))),
    var(--bg-2);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 7%, transparent),
    0 18px 38px rgba(0, 0, 0, 0.18);
  overflow: hidden;
}

.profile-delivery::after {
  content: "";
  position: absolute;
  width: 170px;
  height: 170px;
  right: -80px;
  top: -100px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--brand-2) 13%, transparent);
  filter: blur(18px);
  pointer-events: none;
}

.profile-delivery-head,
.profile-delivery-foot {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--text-3);
}

.profile-delivery-status,
.profile-delivery-foot > span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--success-fg);
  letter-spacing: 0.06em;
}

.profile-delivery-status i,
.profile-delivery-foot i,
.profile-proof i {
  display: inline-block;
  flex: 0 0 auto;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 9px color-mix(in srgb, var(--success) 65%, transparent);
}

.profile-delivery-status i { animation: profile-status 2s ease-in-out infinite; }

@keyframes profile-status {
  50% { opacity: 0.45; box-shadow: 0 0 3px color-mix(in srgb, var(--success) 35%, transparent); }
}

.profile-flow {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 7px;
  margin: 22px 0 18px;
}

.profile-flow-line {
  position: absolute;
  z-index: 0;
  left: 8%;
  right: 8%;
  top: 17px;
  height: 1px;
  overflow: hidden;
  background: color-mix(in srgb, var(--brand) 28%, var(--hairline));
}

.profile-flow-line i {
  display: block;
  width: 24%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--brand-2), transparent);
  filter: drop-shadow(0 0 5px var(--brand-2));
  animation: profile-flow-scan 3.8s linear infinite;
}

@keyframes profile-flow-scan {
  from { transform: translateX(-110%); }
  to { transform: translateX(520%); }
}

.profile-flow-step {
  position: relative;
  z-index: 1;
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.profile-flow-index {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 8px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--brand) 42%, transparent);
  background: color-mix(in srgb, var(--brand) 13%, var(--bg-2));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--bg-2) 88%, transparent);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent-fg);
}

.profile-flow-step strong {
  min-height: 2.8em;
  font-size: 0.72rem;
  line-height: 1.4;
  color: var(--text-2);
}

.profile-flow-step small {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.08em;
  color: var(--text-mute);
}

.profile-evidence {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--hairline);
  border-radius: 12px;
  background: color-mix(in srgb, var(--surface) 56%, transparent);
  overflow: hidden;
}

.profile-evidence-item {
  min-width: 0;
  padding: 11px 10px;
  text-align: center;
}

.profile-evidence-item + .profile-evidence-item { border-left: 1px solid var(--hairline); }

.profile-evidence-item strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.12rem;
  line-height: 1.2;
  color: var(--text-1);
}

.profile-evidence-item strong sup {
  margin-left: 1px;
  font-size: 0.55em;
  color: var(--accent-fg);
}

.profile-evidence-item span {
  display: block;
  margin-top: 4px;
  font-size: 0.64rem;
  line-height: 1.35;
  color: var(--text-3);
}

.profile-delivery-foot {
  padding-top: 12px;
}

.profile-delivery-foot small {
  font-size: 0.55rem;
  letter-spacing: 0.08em;
  color: var(--text-mute);
}

.profile-card-footer {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--hairline);
}

.profile-proof {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px 14px;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
  margin-left: auto;
  justify-content: flex-end;
}

.profile-proof > span:not(.profile-proof-label) {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.profile-proof-label {
  padding-right: 12px;
  border-right: 1px solid var(--hairline);
  letter-spacing: 0.12em;
  color: var(--accent-fg);
}

.profile-card-cta {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  flex: 0 0 auto;
  gap: 18px;
  min-width: 210px;
  font-weight: 600;
  color: var(--text-1);
  padding: 10px 14px 10px 16px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--action-brand), var(--action-cyan));
  box-shadow: 0 8px 24px -8px color-mix(in srgb, var(--brand) 60%, transparent);
  transition: transform var(--t-fast) var(--ease-out), box-shadow var(--t-fast) var(--ease-out);
}

.profile-card-cta > span {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.profile-card-cta strong {
  font-size: 0.86rem;
  line-height: 1.35;
  color: var(--on-action);
}

.profile-card-cta small {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--on-action-muted);
}

.profile-card-cta svg {
  flex: 0 0 auto;
  color: var(--on-action);
  transition: transform var(--t-fast) var(--ease-out);
}

.profile-card:hover .profile-card-cta {
  box-shadow: 0 10px 28px -6px color-mix(in srgb, var(--brand) 70%, transparent);
}

.profile-card:hover .profile-card-cta svg { transform: translateX(3px); }

@media (max-width: 1080px) {
  .profile-card-inner {
    grid-template-columns: minmax(0, 1fr) minmax(315px, 0.9fr);
    gap: 24px;
    padding-inline: 28px;
  }

  .profile-flow-step strong { font-size: 0.68rem; }
  .profile-proof { gap: 8px 11px; }
}

@media (max-width: 920px) {
  .profile-card-inner { grid-template-columns: 1fr; }
  .profile-card-grid {
    mask-image: linear-gradient(180deg, transparent 18%, #000 74%);
    -webkit-mask-image: linear-gradient(180deg, transparent 18%, #000 74%);
  }
}

.section-head {
  display: flex;
  align-items: end;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  color: var(--accent-fg);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.section-head h2 {
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  margin: 0;
  letter-spacing: -0.01em;
  flex: 1;
}

.section-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text-3);
  border: 1px solid var(--hairline);
  padding: 8px 14px;
  border-radius: 999px;
  transition: all var(--t-fast) var(--ease-out);
}

.section-more:hover {
  color: var(--text-1);
  border-color: color-mix(in srgb, var(--brand) 60%, transparent);
  background: color-mix(in srgb, var(--brand) 10%, transparent);
}

/* ---------- Skill grid ---------- */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 18px;
}

.skill-card {
  --accent: 124,140,255;
  --accent-ink: rgb(var(--accent));
  position: relative;
  grid-column: span 2;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "icon title"
    "desc desc"
    "chips chips";
  column-gap: 14px;
  row-gap: 15px;
  min-width: 0;
  min-height: 238px;
  padding: 22px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(var(--accent), 0.09), transparent 44%),
    var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  overflow: hidden;
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.12);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  isolation: isolate;
  transition:
    transform var(--t-base) var(--ease-out),
    border-color var(--t-base) var(--ease-out),
    box-shadow var(--t-base) var(--ease-out);
}

.skill-card > * {
  position: relative;
  z-index: 1;
}

.skill-card::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: radial-gradient(60% 60% at var(--mx, 50%) var(--my, 0%), rgba(var(--accent), 0.18), transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
}

.skill-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-ink);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.22), 0 0 28px rgba(var(--accent), 0.08);
}

.skill-card:hover::before { opacity: 1; }

.skill-card::after {
  content: "";
  position: absolute;
  left: var(--click-x, 50%);
  top: var(--click-y, 50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--accent), 0.48) 0%, rgba(var(--accent), 0.22) 42%, transparent 72%);
  opacity: 0;
  transform: translate(-50%, -50%) scale(0);
  pointer-events: none;
  z-index: 0;
}

.skill-card:active {
  transform: translateY(-1px) scale(0.985);
  transition-duration: 90ms;
}

.skill-card.is-clicked {
  animation: skill-card-click 620ms var(--ease-out);
}

.skill-card.is-clicked::after {
  animation: skill-card-ripple 620ms var(--ease-out);
}

.skill-card.is-clicked .skill-icon {
  animation: skill-icon-pop 520ms var(--ease-out);
}

.skill-card.is-clicked h3 {
  animation: skill-title-flash 620ms var(--ease-out);
}

@keyframes skill-card-click {
  0% { border-color: rgba(var(--accent), 0.45); }
  36% {
    border-color: var(--accent-ink);
    box-shadow: 0 22px 52px rgba(0, 0, 0, 0.24), 0 0 34px rgba(var(--accent), 0.20);
  }
  100% { border-color: var(--surface-border); }
}

@keyframes skill-card-ripple {
  0% { opacity: 0.78; transform: translate(-50%, -50%) scale(0.25); }
  72% { opacity: 0.18; }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(34); }
}

@keyframes skill-icon-pop {
  0%, 100% { transform: scale(1) rotate(0); }
  38% { transform: scale(1.16) rotate(-6deg); }
  68% { transform: scale(0.96) rotate(2deg); }
}

@keyframes skill-title-flash {
  0%, 100% { color: var(--text-1); text-shadow: none; }
  42% { color: var(--accent-ink); text-shadow: 0 0 18px rgba(var(--accent), 0.42); }
}

.skill-icon {
  grid-area: icon;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(var(--accent), 0.22), rgba(var(--accent), 0.06));
  color: var(--accent-ink);
  margin: 0;
  border: 1px solid rgba(var(--accent), 0.35);
}

.skill-icon svg { width: 22px; height: 22px; }

.skill-card h3 {
  grid-area: title;
  align-self: center;
  margin: 0;
  font-size: 1.12rem;
  color: var(--text-1);
}

.skill-card p {
  grid-area: desc;
  margin: 0;
  color: var(--text-3);
  font-size: 0.9rem;
  line-height: 1.7;
}

.skill-card .chips {
  grid-area: chips;
  align-self: end;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.skill-card .chips span {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(var(--accent), 0.10);
  border: 1px solid rgba(var(--accent), 0.25);
  color: var(--text-2);
}

/* 侧栏仍显示但内容区变窄时，六张卡片自然排成两列。 */
@media (max-width: 1180px) {
  .skill-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .skill-card { grid-column: span 2; }
}

/* ---------- Feature grid (3D tilt cards) ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
  perspective: 1200px;
}

.feature-card {
  position: relative;
  padding: 0;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  text-decoration: none;
  border-bottom: 1px solid var(--surface-border) !important;
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out), border-color var(--t-base) var(--ease-out);
  will-change: transform;
}

.feature-card:hover {
  border-color: color-mix(in srgb, var(--brand) 50%, transparent);
  box-shadow: 0 30px 60px rgba(0,0,0,0.45), 0 0 60px color-mix(in srgb, var(--brand) 20%, transparent);
}

.feature-card-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 80% at var(--mx, 50%) var(--my, 0%), color-mix(in srgb, var(--brand) 22%, transparent) 0%, transparent 60%),
    linear-gradient(160deg, transparent 60%, color-mix(in srgb, var(--brand-3) 16%, transparent));
  opacity: 0.7;
  pointer-events: none;
  transition: opacity var(--t-base) var(--ease-out);
}

.feature-card:hover .feature-card-bg { opacity: 1; }

.feature-card-inner {
  position: relative;
  padding: 22px 20px 18px;
  transform: translateZ(20px);
}

.feature-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-3);
  margin-bottom: 10px;
}

.feature-meta time::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-2);
  box-shadow: 0 0 8px var(--brand-2);
  margin-right: 6px;
  vertical-align: 1px;
}

.feature-meta .sep { color: var(--text-mute); }

/* 热门文章角标 */
.feature-card-hot {
  border-color: color-mix(in srgb, var(--brand) 40%, transparent);
}
.feature-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px 3px 7px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--on-action);
  border-radius: 999px;
  background: linear-gradient(135deg, var(--action-brand), var(--action-danger));
  box-shadow: 0 4px 14px color-mix(in srgb, #ff5d73 45%, transparent);
}
.feature-card-badge svg { opacity: 0.95; }

.feature-card h3 {
  font-size: 1.1rem;
  color: var(--text-1);
  margin: 0 0 8px;
  letter-spacing: -0.005em;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-3);
  line-height: 1.6;
  margin: 0 0 16px;
}

.feature-foot {
  display: flex;
  justify-content: flex-end;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--link-hover-fg);
  transition: gap var(--t-fast) var(--ease-out);
}

.feature-card:hover .read-more { gap: 10px; }

/* ---------- Landing cloud / CTA ---------- */
.landing-cloud { margin: 0; }

.landing-cta {
  position: relative;
  margin: 64px 0 8px;
  padding: 56px clamp(20px, 4vw, 44px);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 14%, var(--bg-2)) 0%, var(--bg-2) 60%);
  border: 1px solid var(--surface-border);
  text-align: center;
  overflow: hidden;
}

.cta-glow {
  position: absolute;
  inset: -40% -10% auto -10%;
  height: 120%;
  background: radial-gradient(60% 60% at 50% 0%, color-mix(in srgb, var(--brand) 50%, transparent), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

.landing-cta h2 {
  position: relative;
  z-index: 1;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.landing-cta p {
  position: relative;
  z-index: 1;
  color: var(--text-3);
  margin: 0 auto 22px;
  max-width: 50ch;
}

.landing-cta .btn { position: relative; z-index: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .landing-hero {
    grid-template-columns: 1fr;
    padding: 40px 22px;
  }

  .landing-terminal {
    transform: none !important;
  }

  .landing-hero .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==========================================================================
   Mobile adaptation · 移动端适配
   规则：所有规则仅作用于 <= 920px / <= 520px / 触屏设备；
        桌面端 (>= 921px) 视觉与交互保持不变。
   ========================================================================== */

/* ---------- iOS 安全区 ---------- */
@supports (padding: max(0px)) {
  @media (max-width: 920px) {
    .menu-toggle {
      top: max(12px, env(safe-area-inset-top));
      left: max(12px, env(safe-area-inset-left));
    }
    .fab {
      right: max(16px, env(safe-area-inset-right));
      bottom: max(20px, env(safe-area-inset-bottom));
    }
    .main {
      padding-left: max(14px, env(safe-area-inset-left));
      padding-right: max(14px, env(safe-area-inset-right));
      padding-bottom: max(72px, env(safe-area-inset-bottom));
    }
    .sidebar {
      padding-top: max(28px, env(safe-area-inset-top));
      padding-bottom: max(20px, env(safe-area-inset-bottom));
    }
  }
}

/* ---------- 通用：≤ 920px ---------- */
@media (max-width: 920px) {
  /* 触屏阅读体验：稍微放慢一点动画并抑制过度的悬浮位移，避免 hover 锁定后视觉残留 */
  html { scroll-behavior: smooth; }

  /* 顶栏菜单按钮预留位置，标题不被遮挡 */
  .main { padding-top: 70px; }

  /* Hero（普通页 hero 与文章页头）字号收敛 */
  .hero { padding: 26px 20px; border-radius: var(--radius-lg); }
  .hero h1 { font-size: clamp(1.4rem, 6vw, 1.9rem); }
  .hero p { font-size: 0.96rem; }
  .hero-stats { gap: 18px; }
  .hero-stats .num { font-size: 1.2rem; }

  /* 文章卡片更紧凑 */
  .post-card { padding: 20px 18px; border-radius: var(--radius-md); }
  .post-card h2 { font-size: 1.18rem; }
  .post-card .excerpt { font-size: 0.94rem; margin-bottom: 12px; }
  .post-meta { font-size: 0.82rem; gap: 8px; }

  /* 文章正文 */
  .article { padding: 24px 18px; border-radius: var(--radius-lg); }
  .article-header { margin-bottom: 24px; padding-bottom: 18px; }
  .article-header h1 { font-size: clamp(1.4rem, 6vw, 1.9rem); }
  .article-content {
    --prose-w: 100%;
    font-size: 1rem;
    line-height: 1.8;
    /* 中英混排在窄屏下使用普通对齐，避免 inter-character 拉宽产生奇怪空隙 */
    text-align: left;
  }
  .article-content p { text-align: left; text-justify: auto; }
  /* 首字下沉在小屏放大太突兀，缩小 */
  .article-content > p:first-of-type::first-letter {
    font-size: 2.4em;
    padding: 0.04em 0.08em 0 0;
    margin: 0.04em 0.08em 0 0;
  }
  .article-content h2 { font-size: 1.32rem; margin-top: 1.8em; }
  .article-content h3 { font-size: 1.12rem; margin-top: 1.5em; }
  .article-content h4 { font-size: 1rem; }
  .article-content h2::before { width: 14px; height: 14px; border-radius: 5px; }
  .article-content blockquote { padding: 14px 16px 14px 44px; }
  .article-content blockquote::before { font-size: 2.6em; left: 10px; top: 6px; }
  .article-content ol > li { padding-left: 2.1em; }
  .article-content img { margin: 1em auto; }

  /* 行内代码不再 nowrap，避免水平爆框 */
  .article-content :not(pre) > code { white-space: normal; word-break: break-word; }

  /* 代码块：留白收敛、字号微调 */
  .article-content pre code,
  .page-content pre code,
  .highlight pre code,
  figure.highlight pre code {
    padding: 14px 14px;
    font-size: 0.82rem;
    line-height: 1.65;
    -webkit-overflow-scrolling: touch;
  }

  /* 复制按钮在窄屏上扩大触控热区，避免误触代码 */
  .code-copy {
    width: 44px;
    height: 28px;
    top: 4px;
    right: 6px;
    font-size: 0.72rem;
  }
  .code-lang { right: 60px; font-size: 0.68rem; }

  /* TOC 默认折叠（由 JS 处理；样式保证折叠态紧凑） */
  .toc { padding: 4px 16px; margin-bottom: 22px; }
  .toc-title { min-height: 44px; margin: 0; font-size: 0.74rem; }
  .toc:not([data-collapsed="true"]) { padding-top: 12px; padding-bottom: 14px; }
  .toc:not([data-collapsed="true"]) .toc-title { margin-bottom: 8px; }
  .toc-list .toc-h3 a { padding-left: 22px; }
  .toc-list .toc-h4 a { padding-left: 36px; }

  /* 表格容器允许触摸滚动并提示 */
  .article-content .table-wrap {
    margin-left: -2px;
    margin-right: -2px;
  }

  /* 文章底部导航 */
  .article-footer .nav-prev,
  .article-footer .nav-next { padding: 12px 14px; }
  .article-footer .nav-next { text-align: left; }

  /* 通用页面 */
  .page { padding: 24px 18px; border-radius: var(--radius-lg); }
  .page-header h1 { font-size: 1.4rem; }
  .page-content { line-height: 1.75; }

  /* 链接卡片：单列，避免最小 220px 触发横向溢出 */
  .link-category { padding: 18px; }
  .link-category ul { grid-template-columns: 1fr; }

  /* 分类页 */
  .cate-cloud { gap: 8px; }
  .cate-chip { padding: 7px 12px; font-size: 0.86rem; }
  .cate-list li {
    padding: 12px 14px;
    flex-wrap: wrap;
    gap: 6px;
  }
  .cate-list a { flex: 1 1 100%; }
  .cate-list .date { font-size: 0.78rem; }

  /* 分页器：触控更大，间距更舒适 */
  .pagination { padding: 10px; gap: 4px; }
  .pagination a,
  .pagination em,
  .pagination span {
    min-width: 36px;
    padding: 8px 10px;
    font-size: 0.86rem;
  }

  /* 侧边抽屉：宽度按视口自适应，最大 86vw 避免遮挡过多内容 */
  .sidebar {
    width: min(var(--sidebar-w), 86vw);
    padding: 24px 20px;
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  .sidebar .brand-name { font-size: 1.05rem; }
  .sidebar .nav a,
  .sidebar .nav-search { padding: 12px 14px; font-size: 1rem; }
  .avatar-return,
  .avatar { width: 80px; height: 80px; }

  /* 菜单按钮触控更舒适 */
  .menu-toggle { width: 44px; height: 44px; border-radius: 12px; }

  /* 回到顶部按钮在窄屏尺寸略大、更易点击 */
  .fab { width: 46px; height: 46px; }

  /* 阅读进度条避开刘海 */
  .read-progress { top: env(safe-area-inset-top, 0); }

  /* ---------- Landing 页 ---------- */
  .landing-hero { padding: 36px 20px; gap: 24px; border-radius: var(--radius-lg); }
  .landing-hero .hero-title { font-size: clamp(1.8rem, 8vw, 2.4rem); }
  .landing-hero .hero-typed { font-size: 0.92rem; margin-bottom: 20px; }
  .landing-hero .hero-cta { gap: 10px; }
  .landing-hero .btn { padding: 11px 18px; font-size: 0.92rem; }
  .landing-hero .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .landing-hero .hero-stats .stat { padding: 12px 14px; }
  .landing-hero .hero-stats .num { font-size: 1.3rem; }

  /* 终端去掉 3D 透视，改为常规卡片 */
  .landing-terminal {
    transform: none !important;
    font-size: 0.78rem;
  }
  .landing-terminal:hover { transform: none !important; }
  .terminal-body { padding: 14px 14px 18px; line-height: 1.75; }

  /* Marquee 节奏稍慢 + 更舒适字号 */
  .marquee { font-size: 0.84rem; padding: 12px 0; }
  .marquee-track { animation-duration: 56s; }

  .landing-section { margin: 40px 0; }
  .section-head { gap: 8px; margin-bottom: 16px; }
  .section-head h2 { font-size: clamp(1.2rem, 5vw, 1.6rem); }
  .section-eyebrow { font-size: 0.72rem; }
  .section-more { padding: 6px 12px; font-size: 0.84rem; }

  /* Skill 网格保持双列；feature 卡片继续单列。 */
  .skill-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
  .feature-grid { grid-template-columns: 1fr; gap: 14px; }
  .skill-card { padding: 18px 16px; }
  .feature-card-inner { padding: 18px 16px 14px; }

  /* Profile spotlight 移动端节奏 */
  .profile-card-inner { padding: 22px 18px; }
  .profile-card-title { font-size: clamp(1.2rem, 5.5vw, 1.6rem); }
  .profile-card-desc { font-size: 0.92rem; line-height: 1.7; }
  .profile-card-tags span { font-size: 0.7rem; padding: 3px 8px; }
  .profile-card-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 15px;
  }
  .profile-card-cta {
    width: 100%;
    min-width: 0;
    padding: 10px 14px;
  }
  .profile-proof {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    margin-left: 0;
    justify-content: stretch;
    gap: 8px 12px;
  }
  .profile-proof-label {
    grid-column: 1 / -1;
    padding: 0 0 8px;
    border-right: 0;
    border-bottom: 1px solid var(--hairline);
  }

  .landing-cta { padding: 40px 20px; margin-top: 48px; }
  .landing-cta h2 { font-size: clamp(1.3rem, 6vw, 1.8rem); }

  /* 1:1 网格中 hero 状态使用半角分隔避免文字偏黑 */
  .post-meta .sep { opacity: 0.6; }
}

/* Skill 卡片在手机宽度回落为单列，避免标题和标签被过度挤压。 */
@media (max-width: 640px) {
  .skill-grid { grid-template-columns: 1fr; }
  .skill-card {
    grid-column: auto;
    min-height: 0;
  }
}

/* ---------- 极窄屏：≤ 520px ---------- */
@media (max-width: 520px) {
  body { font-size: 15.5px; }
  .main { padding: 64px 12px 72px; }

  .hero { padding: 22px 16px; }
  .hero-eyebrow { font-size: 0.7rem; letter-spacing: 0.14em; }
  .hero h1 { font-size: 1.5rem; }

  .post-card { padding: 16px 14px; }
  .post-card h2 { font-size: 1.08rem; }
  .post-card .excerpt {
    font-size: 0.9rem;
    /* 摘要限制 3 行避免列表过长 */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .article { padding: 20px 14px; }
  .article-header h1 { font-size: 1.4rem; line-height: 1.25; }
  .article-content { font-size: 1rem; line-height: 1.85; }
  .article-content h2 { font-size: 1.2rem; }
  .article-content h3 { font-size: 1.05rem; }
  .article-content > p:first-of-type::first-letter {
    font-size: 2em;
  }

  .page { padding: 20px 14px; }

  .pagination a,
  .pagination em,
  .pagination span {
    min-width: 32px;
    padding: 6px 9px;
  }

  /* 文章底部上下篇文字不溢出 */
  .article-footer .nav-prev span,
  .article-footer .nav-next span {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  /* Landing */
  .landing-hero { padding: 28px 16px; }
  .landing-hero .hero-title { font-size: clamp(1.6rem, 9vw, 2rem); }
  .landing-hero .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .landing-cta { padding: 32px 18px; }
  .marquee { font-size: 0.78rem; }

  /* 缩短 sidebar 内边距，给主内容更多宽度 */
  .sidebar { padding: 22px 16px; }

  /* 浮动按钮位置避免遮挡内容尾部 */
  .fab { right: 14px; bottom: 18px; }
}

/* ---------- 触屏设备：移除 hover 副作用 + 关闭 3D tilt ---------- */
@media (hover: none) and (pointer: coarse) {
  /* 卡片在 touch 上不需要悬浮位移 / 阴影抖动 */
  .post-card:hover,
  .feature-card:hover,
  .skill-card:hover,
  .profile-card:hover,
  .link-category:hover,
  .cate-list li:hover,
  .cate-chip:hover,
  .icon-btn:hover,
  .pagination a:hover,
  .article-footer .nav-prev:hover,
  .article-footer .nav-next:hover,
  .article-content img:hover {
    transform: none !important;
    box-shadow: var(--shadow-1) !important;
  }

  .profile-card:active { transform: scale(0.992) !important; }

  .skill-card:active {
    transform: scale(0.985) !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.22) !important;
  }

  /* 标签 / 链接保留色彩反馈，但不抖动位置 */
  .nav a:hover,
  .nav-search:hover { transform: none !important; }
  .tag:hover { transform: none !important; }

  /* 触屏不显示锚点（hover 永久态会让 # 一直可见） */
  .article-content h2 .anchor,
  .article-content h3 .anchor,
  .article-content h4 .anchor { opacity: 0 !important; }

  .article-content .anchor:focus-visible { opacity: 1 !important; }

  /* 头像旋转由 JS 控制，hover 时启动；这里无需特殊处理 */

  /* 神经网络背景在触屏 / 弱机型上禁用，省电省 GPU */
  .bg-neural { display: none !important; }

  /* 关闭 3D 透视类卡片倾斜（JS 也已禁用，这里兜底） */
  .feature-card { transform: none !important; }
  .feature-grid { perspective: none; }
}

/* ---------- 横屏小屏：例如 iPhone landscape ---------- */
@media (max-width: 920px) and (orientation: landscape) and (max-height: 480px) {
  .main { padding-top: 60px; }
  .landing-hero { padding: 24px 18px; }
  .landing-hero .hero-stats { grid-template-columns: repeat(4, 1fr); }
  .hero { padding: 18px 18px; }
}

/* ---------- 高分辨率小屏 / 暗角处理 ---------- */
@media (max-width: 920px) {
  /* 网格背景在小屏过密，弱化一下视觉负担 */
  .bg-grid { background-size: 36px 36px; opacity: 0.6; }
}


/* ==========================================================================
   Mobile overflow hardening
   规则：兜底解决移动端"内容比屏幕宽，需左右滑动"的问题。
        仅作用于 ≤ 920px，桌面端视觉与交互保持不变。
   ========================================================================== */
@media (max-width: 920px) {
  /* 1) 防止网格 / flex 子项被长内容（URL、代码、英文长词、终端命令）撑开
        Grid / Flex 子项默认 min-width: auto，会被内联内容撑出视口宽度，
        强制 min-width: 0 + min-width: 0 让其遵守容器宽度。 */
  .app,
  .main,
  .landing-hero,
  .landing-hero-inner,
  .landing-terminal,
  .hero-stats,
  .skill-grid,
  .feature-grid,
  .feature-card,
  .feature-card-inner,
  .post-list,
  .post-card,
  .article,
  .article-content,
  .page,
  .page-content,
  .toc,
  .cate-cloud,
  .cate-list,
  .link-category,
  .post-meta,
  .tags,
  .hero,
  .hero-cta,
  .terminal-body {
    min-width: 0;
  }

  /* 2) 主内容区与 landing 容器：不超过视口宽度（含内边距） */
  .main,
  .is-landing .main {
    max-width: 100vw;
    /* 防止 100vw 在某些浏览器把滚动条算进去 */
    max-width: 100%;
  }

  /* 3) 长 URL / 长英文 token 在卡片、链接列表中可换行 */
  .link-category a,
  .article-content a,
  .page-content a,
  .post-card a,
  .feature-card p,
  .feature-card h3 {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  /* 4) 终端模拟块在窄屏内可换行，不再保留单行宽度 */
  .landing-terminal { max-width: 100%; }
  .terminal-body .t-line {
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
  }
  .t-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
  }

  /* 5) 媒体元素永远不超过容器 */
  img,
  video,
  iframe,
  canvas,
  svg,
  embed,
  object {
    max-width: 100%;
    height: auto;
  }
  /* 神经网络背景画布除外（它需要全屏覆盖） */
  canvas.bg-neural { height: 100%; }

  /* 6) 行内代码段在窄屏可换行（之前规则已存在，这里加 break-word 兜底） */
  .article-content :not(pre) > code,
  .page-content :not(pre) > code {
    overflow-wrap: anywhere;
  }

  /* 7) 装饰性 hero / landing-hero 渐变描边在窄屏下避免水平裁剪导致 1px 偏移 */
  .hero,
  .landing-hero,
  .landing-cta {
    max-width: 100%;
  }
}


/* ==========================================================================
   About page · 关于页（科技感强化版）
   规则：仅作用于 about 页内 .about-* 命名空间，避免影响其他页面。
   ========================================================================== */

/* ---------- Hero ---------- */
.about-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) 1.15fr;
  gap: 36px;
  align-items: center;
  padding: 56px clamp(20px, 4vw, 48px);
  margin: 8px 0 28px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--brand) 14%, var(--bg-2)) 0%, var(--bg-2) 60%, color-mix(in srgb, var(--brand-3) 12%, var(--bg-2)) 100%);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow-2);
  overflow: hidden;
  isolation: isolate;
}

.about-hero::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--brand) 80%, transparent),
      transparent 40%,
      color-mix(in srgb, var(--brand-3) 80%, transparent));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
  background-size: 200% 200%;
  animation: borderShine 7s linear infinite;
  z-index: 1;
}

.about-hero-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(color-mix(in srgb, var(--brand) 12%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--brand) 12%, transparent) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(60% 60% at 70% 50%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(60% 60% at 70% 50%, #000 0%, transparent 70%);
  opacity: 0.55;
}

.about-scanline {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(180deg,
    transparent 0%,
    color-mix(in srgb, var(--brand-2) 22%, transparent) 50%,
    transparent 100%);
  height: 80px;
  opacity: 0.35;
  filter: blur(1px);
  animation: about-scan 6s linear infinite;
}

@keyframes about-scan {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(700%); }
}

.about-hero-content {
  position: relative;
  z-index: 2;
}

.about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand-2) 10%, var(--bg-2));
  border: 1px solid color-mix(in srgb, var(--brand-2) 40%, transparent);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-fg);
  margin-bottom: 18px;
}

.about-eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-2);
  box-shadow: 0 0 10px var(--brand-2);
  animation: pulse 1.6s var(--ease-in-out) infinite;
}

.about-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}

.about-title-line {
  display: block;
  opacity: 0;
  transform: translateY(16px);
  animation: rise 0.8s var(--ease-out) forwards;
}

.about-title-line:nth-child(2) { animation-delay: 140ms; }

.about-title-cursor {
  display: inline-block;
  margin-left: 6px;
  color: var(--brand-2);
  animation: caret 1s steps(2) infinite;
}

.about-typed {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  color: var(--text-2);
  margin: 0 0 26px;
  min-height: 1.7em;
}

.about-typed .caret {
  color: var(--brand-2);
  margin-left: 4px;
  animation: caret 1s steps(2) infinite;
}

.about-status {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-3) 80%, transparent);
  border: 1px solid var(--surface-border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-2);
  transition: all var(--t-fast) var(--ease-out);
}

.status-pill:hover {
  border-color: color-mix(in srgb, var(--brand) 60%, transparent);
  color: var(--text-1);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px color-mix(in srgb, var(--brand) 22%, transparent);
}

.status-pill .status-key {
  color: var(--text-mute);
  letter-spacing: 0.08em;
}

.status-pill .status-val {
  color: var(--accent-fg);
  font-weight: 600;
}

.status-pill--online {
  background: linear-gradient(135deg, color-mix(in srgb, #4ade80 22%, transparent), color-mix(in srgb, var(--brand-2) 18%, transparent));
  border-color: color-mix(in srgb, #4ade80 50%, transparent);
  color: var(--text-1);
}

.status-pill--online .status-led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 10px #4ade80;
  animation: pulse 1.6s var(--ease-in-out) infinite;
}

.about-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Core profile snapshot · 核心概述精简展示 ---------- */
.about-snapshot {
  position: relative;
}

.snapshot-card {
  position: relative;
  width: 100%;
  max-width: 100%;
  margin: 0;
  padding: 0;
  border-radius: 20px;
  overflow: hidden;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand) 22%, var(--surface-border));
  box-shadow: 0 24px 60px -28px color-mix(in srgb, var(--brand) 55%, transparent);
  backdrop-filter: blur(10px);
}

.snapshot-glow {
  position: absolute;
  inset: -40% -20% auto -20%;
  height: 70%;
  background: radial-gradient(60% 80% at 30% 0%, color-mix(in srgb, var(--brand) 32%, transparent), transparent 70%);
  pointer-events: none;
  opacity: 0.8;
}

.snapshot-bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-bottom: 1px solid color-mix(in srgb, var(--brand) 14%, var(--surface-border));
  background: color-mix(in srgb, var(--surface-2, var(--surface)) 70%, transparent);
}

.snapshot-bar-title {
  margin-left: 8px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.8rem;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

/* 终端右侧推理状态徽标：generating… → ✓ done */
.snapshot-bar-status {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 2px 9px;
  border-radius: 999px;
  border: 1px solid transparent;
  opacity: 0;
  transform: translateY(-2px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  white-space: nowrap;
}

.snapshot-bar-status.is-generating,
.snapshot-bar-status.is-done {
  opacity: 1;
  transform: none;
}

.snapshot-bar-status.is-thinking {
  opacity: 1;
  transform: none;
  color: var(--warning-fg);
  border-color: color-mix(in srgb, #fbbf24 40%, transparent);
  background: color-mix(in srgb, #fbbf24 14%, transparent);
  animation: snap-status-pulse-amber 1.1s ease-in-out infinite;
}

.snapshot-bar-status.is-generating {
  color: var(--accent-fg);
  border-color: color-mix(in srgb, var(--brand-2) 40%, transparent);
  background: color-mix(in srgb, var(--brand-2) 14%, transparent);
  animation: snap-status-pulse 1.1s ease-in-out infinite;
}

.snapshot-bar-status.is-done {
  color: var(--success-fg);
  border-color: color-mix(in srgb, #7cffb4 45%, transparent);
  background: color-mix(in srgb, #7cffb4 14%, transparent);
}

@keyframes snap-status-pulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--brand-2) 35%, transparent); }
  50% { box-shadow: 0 0 8px 1px color-mix(in srgb, var(--brand-2) 45%, transparent); }
}

@keyframes snap-status-pulse-amber {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, #fbbf24 35%, transparent); }
  50% { box-shadow: 0 0 8px 1px color-mix(in srgb, #fbbf24 45%, transparent); }
}

@media (max-width: 620px) {
  .snapshot-bar-status { font-size: 0.66rem; padding: 2px 7px; }
}

@media (prefers-reduced-motion: reduce) {
  .snapshot-bar-status.is-generating,
  .snapshot-bar-status.is-thinking { animation: none; }
}

.snapshot-lines {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 20px 22px 6px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.98rem;
  line-height: 1.7;
}

.snap-line {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 7px 0;
  opacity: 1;
  transform: none;
  filter: none;
}

.about-snapshot.is-pending .snap-line {
  opacity: 0;
  transform: translateX(-16px);
  filter: blur(3px);
}

.snap-line.is-revealed,
.about-snapshot.is-pending .snap-line.is-revealed {
  opacity: 1;
  transform: none;
  filter: none;
  transition: opacity 0.45s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1), filter 0.45s ease;
}

/* 每行进入时左侧出现一道高亮扫光 */
.snap-line::before {
  content: "";
  position: absolute;
  left: 0;
  width: 2px;
  height: 0;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--brand), var(--brand-2));
  box-shadow: 0 0 10px var(--brand);
  opacity: 0;
}

.snap-line.is-revealed::before {
  animation: snap-bar 0.6s ease forwards;
}

@keyframes snap-bar {
  0%   { height: 0; opacity: 0; }
  45%  { height: 100%; opacity: 1; }
  100% { height: 100%; opacity: 0; }
}

/* 移动的扫描线，在打字阶段循环划过 */
.snapshot-lines::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  top: 0;
  height: 64px;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--brand) 16%, transparent), transparent);
  opacity: 0;
}

.about-snapshot.is-typing .snapshot-lines::after {
  opacity: 1;
  animation: snap-scan 1.6s linear infinite;
}

@keyframes snap-scan {
  0%   { transform: translateY(-30px); }
  100% { transform: translateY(420px); }
}

/* ---- 分区式提示词：章节标题行 (# 1. 角色设定 …) ---- */
.snap-head {
  align-items: center;
  gap: 8px;
  padding: 14px 0 6px;
}

.snap-head:first-child { padding-top: 4px; }

.snap-hash {
  flex: none;
  font-weight: 800;
  color: var(--brand);
  text-shadow: 0 0 10px color-mix(in srgb, var(--brand) 60%, transparent);
}

.snap-head .snap-val {
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-2);
}

/* 章节标题颜色按出现顺序循环，增加层次感 */
.snap-head:nth-of-type(3n+1) .snap-hash { color: var(--brand); }
.snap-head:nth-of-type(3n+2) .snap-hash { color: var(--brand-2); }
.snap-head:nth-of-type(3n+3) .snap-hash { color: var(--brand-3); }

/* ---- 分区式提示词：要点行 (- 你是谁 …) ---- */
.snap-item { padding-left: 18px; }

.snap-field {
  flex: none;
  min-width: 64px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--accent-fg);
  opacity: 0.92;
}

.snap-field::before { content: "- "; opacity: 0.6; }

.snap-val {
  position: relative;
  color: var(--text-2);
  white-space: pre-wrap;
  word-break: break-word;
}

.snap-val:empty::before {
  content: attr(data-text);
}

/* 正在解码的那一行：高亮 + 辉光 + 末尾光标 */
.snap-val.is-decoding {
  color: var(--accent-fg);
  text-shadow: 0 0 10px color-mix(in srgb, var(--brand-2) 70%, transparent);
}

.snap-val.is-decoding::after {
  content: "▍";
  margin-left: 1px;
  color: var(--brand);
  animation: snap-caret 0.7s steps(1) infinite;
}

@keyframes snap-caret {
  50% { opacity: 0; }
}

/* ---------- Prominent CTA ---------- */
.snapshot-cta {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 14px 18px 20px;
  padding: 16px 20px;
  border-radius: 16px;
  text-decoration: none;
  color: var(--on-action);
  background: linear-gradient(120deg, var(--action-brand) 0%, var(--action-purple) 60%, var(--action-cyan) 100%);
  background-size: 200% 100%;
  box-shadow: 0 16px 36px -16px color-mix(in srgb, var(--brand) 75%, transparent);
  overflow: hidden;
  opacity: 1;
  transform: none;
  pointer-events: auto;
  transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease;
}

.about-snapshot.is-pending .snapshot-cta {
  opacity: 0;
  transform: translateY(14px) scale(0.98);
  pointer-events: none;
}

.about-snapshot.is-typing .snapshot-cta,
.about-snapshot.is-done .snapshot-cta {
  opacity: 1;
  transform: none;
  pointer-events: auto;
  animation: snap-cta-breath 3.2s ease-in-out infinite;
}

@keyframes snap-cta-breath {
  0%, 100% { box-shadow: 0 16px 36px -16px color-mix(in srgb, var(--brand) 70%, transparent); }
  50%      { box-shadow: 0 22px 48px -14px color-mix(in srgb, var(--brand) 95%, transparent); }
}

.snapshot-cta-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 20%, rgba(255,255,255,0.35) 50%, transparent 80%);
  transform: translateX(-120%);
  pointer-events: none;
}

.about-snapshot.is-typing .snapshot-cta-glow,
.about-snapshot.is-done .snapshot-cta-glow {
  animation: snap-cta-sheen 3.6s ease-in-out 0.6s infinite;
}

@keyframes snap-cta-sheen {
  0%   { transform: translateX(-120%); }
  35%  { transform: translateX(120%); }
  100% { transform: translateX(120%); }
}

.snapshot-cta:hover {
  background-position: 100% 0;
  transform: translateY(-2px);
  animation-play-state: paused;
}

.snapshot-cta-icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.16);
}

.snapshot-cta-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-right: auto;
}

.snapshot-cta-main {
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.snapshot-cta-sub {
  font-size: 0.78rem;
  color: var(--on-action-muted);
}

.snapshot-cta-arrow {
  flex: none;
  display: grid;
  place-items: center;
  transition: transform 0.3s ease;
}

.snapshot-cta:hover .snapshot-cta-arrow {
  transform: translateX(5px);
}

/* ---------- Stats strip inside snapshot ---------- */
.snapshot-stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  margin: 8px 18px 4px;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--brand) 16%, var(--surface-border));
  border-radius: 14px;
  overflow: hidden;
  background: color-mix(in srgb, var(--brand) 14%, var(--surface-border));
  opacity: 1;
  transform: none;
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.about-snapshot.is-pending .snapshot-stats {
  opacity: 0;
  transform: translateY(10px);
}

.about-snapshot.is-typing .snapshot-stats,
.about-snapshot.is-done .snapshot-stats {
  opacity: 1;
  transform: none;
}

.snap-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 14px 8px;
  text-align: center;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
}

.snap-stat-value {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(120deg, var(--link-fg), var(--accent-fg));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.snap-stat-glyph { font-size: clamp(1.4rem, 3.4vw, 1.9rem); }

.snap-stat-label {
  font-size: 0.74rem;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

@media (max-width: 620px) {
  .snapshot-lines { font-size: 0.86rem; padding: 16px 14px 4px; }
  .snap-field { min-width: 52px; }
  .snap-item { padding-left: 12px; }
  .snapshot-cta { margin: 12px 12px 16px; padding: 14px 16px; gap: 12px; }
  .snapshot-cta-sub { display: none; }
  .snapshot-cta-icon { width: 36px; height: 36px; }
  .snapshot-stats {
    grid-template-columns: repeat(2, 1fr);
    margin: 8px 12px 4px;
  }
  .snap-stat:last-child { grid-column: 1 / -1; }
  .snap-stat { padding: 12px 6px; }
}

@media (prefers-reduced-motion: reduce) {
  .snapshot-cta,
  .snapshot-cta-glow { animation: none !important; }
  .snap-line { opacity: 1; transform: none; filter: none; }
  .snapshot-lines::after { display: none; }
  .snapshot-stats { opacity: 1; transform: none; }
}

/* ---------- Holographic avatar ---------- */
.about-hologram {
  position: relative;
  width: 100%;
  max-width: 360px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  isolation: isolate;
}

.holo-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--brand) 35%, transparent);
  pointer-events: none;
}

.holo-ring-1 {
  inset: 0;
  border: 1px dashed color-mix(in srgb, var(--brand) 55%, transparent);
  animation: holo-spin 22s linear infinite;
}

.holo-ring-2 {
  inset: 8%;
  border: 1px solid color-mix(in srgb, var(--brand-2) 45%, transparent);
  border-style: dashed;
  border-top-color: transparent;
  border-bottom-color: transparent;
  animation: holo-spin 14s linear infinite reverse;
}

.holo-ring-3 {
  inset: 16%;
  border: 1px solid color-mix(in srgb, var(--brand-3) 40%, transparent);
  border-left-color: transparent;
  border-right-color: transparent;
  animation: holo-spin 10s linear infinite;
}

@keyframes holo-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.holo-orbit {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
  animation: holo-spin 18s linear infinite;
}

.holo-particle {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-2);
  box-shadow: 0 0 16px var(--brand-2);
  top: 50%;
  left: 50%;
}

.holo-particle-1 { transform: translate(-50%, -50%) rotate(0deg) translateY(-46%); background: var(--brand-2); }
.holo-particle-2 { transform: translate(-50%, -50%) rotate(120deg) translateY(-46%); background: var(--brand-3); box-shadow: 0 0 16px var(--brand-3); }
.holo-particle-3 { transform: translate(-50%, -50%) rotate(240deg) translateY(-46%); background: var(--brand); box-shadow: 0 0 16px var(--brand); }

.holo-avatar {
  position: relative;
  z-index: 3;
  width: 60%;
  height: 60%;
  border-radius: 50%;
  padding: 4px;
  background: conic-gradient(from 0deg, var(--brand), var(--brand-2), var(--brand-3), var(--brand));
  box-shadow:
    0 0 40px color-mix(in srgb, var(--brand) 50%, transparent),
    0 0 80px color-mix(in srgb, var(--brand-2) 25%, transparent);
  overflow: hidden;
  isolation: isolate;
  animation: holo-float 6s var(--ease-in-out) infinite alternate;
}

.holo-avatar::before {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--bg-1);
  z-index: 0;
}

.holo-avatar img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.05);
}

.holo-scan {
  position: absolute;
  z-index: 2;
  left: 4px;
  right: 4px;
  top: 4px;
  height: 30%;
  border-radius: 50%;
  background: linear-gradient(180deg,
    transparent 0%,
    color-mix(in srgb, var(--brand-2) 35%, transparent) 50%,
    transparent 100%);
  mix-blend-mode: screen;
  animation: holo-scanline 3.4s var(--ease-in-out) infinite;
  pointer-events: none;
}

@keyframes holo-scanline {
  0%   { transform: translateY(-30%); opacity: 0; }
  10%  { opacity: 0.9; }
  90%  { opacity: 0.9; }
  100% { transform: translateY(260%); opacity: 0; }
}

@keyframes holo-float {
  from { transform: translateY(-4px); }
  to   { transform: translateY(4px); }
}

.holo-rain {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.6;
  mix-blend-mode: screen;
  z-index: 0;
}


/* ---------- System status ---------- */
.about-system-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 20px;
}

.about-terminal {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(160deg, #0a0e1c 0%, #0d1226 100%);
  border: 1px solid var(--surface-border);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.4), 0 0 60px color-mix(in srgb, var(--brand) 14%, transparent);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  transform: perspective(1200px) rotateY(-3deg) rotateX(1deg);
  transition: transform var(--t-base) var(--ease-out);
}

.about-terminal:hover {
  transform: perspective(1200px) rotateY(0deg) rotateX(0);
}

.about-terminal .t-line:nth-child(1) { animation-delay: 0.3s; }
.about-terminal .t-line:nth-child(2) { animation-delay: 0.7s; }
.about-terminal .t-line:nth-child(3) { animation-delay: 1.1s; }
.about-terminal .t-line:nth-child(4) { animation-delay: 1.5s; }
.about-terminal .t-line:nth-child(5) { animation-delay: 1.9s; }
.about-terminal .t-line:nth-child(6) { animation-delay: 2.3s; }
.about-terminal .t-line:nth-child(7) { animation-delay: 2.7s; }
.about-terminal .t-line:nth-child(8) { animation-delay: 3.1s; }
.about-terminal .t-line:nth-child(9) { animation-delay: 3.5s; }
.about-terminal .t-line:nth-child(10){ animation-delay: 3.9s; }

.about-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.about-metric {
  position: relative;
  padding: 18px 18px 16px;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
  transition: all var(--t-base) var(--ease-out);
}

.about-metric::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand-2), transparent);
  opacity: 0.55;
}

.about-metric:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--brand) 50%, transparent);
  box-shadow: 0 12px 28px color-mix(in srgb, var(--brand) 22%, transparent);
}

.about-metric .m-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
}

.about-metric .m-value {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--accent-fg), var(--link-fg));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 6px 18px color-mix(in srgb, var(--brand) 40%, transparent));
}

.about-metric .m-value.about-metric-glyph {
  font-size: 2.6rem;
  background: linear-gradient(135deg, var(--action-purple), var(--accent-fg));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.about-metric .m-sub {
  font-size: 0.78rem;
  color: var(--text-3);
}

/* ---------- Manifesto cards ---------- */
.manifesto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  perspective: 1200px;
}

.manifesto-card {
  --accent: 124,140,255;
  --accent-ink: rgb(var(--accent));
  position: relative;
  padding: 24px 20px 22px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform var(--t-base) var(--ease-out), border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}

.manifesto-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(var(--accent), 0.6), transparent 50%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
  pointer-events: none;
}

.manifesto-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 60% at var(--mx, 50%) var(--my, 0%), rgba(var(--accent), 0.18), transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
}

.manifesto-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-ink);
  box-shadow: 0 20px 40px color-mix(in srgb, rgb(var(--accent)) 22%, transparent);
}

.manifesto-card:hover::before,
.manifesto-card:hover::after {
  opacity: 1;
}

.manifesto-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  font-weight: 700;
  color: var(--accent-ink);
  margin-bottom: 12px;
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(var(--accent), 0.10);
  border: 1px solid rgba(var(--accent), 0.30);
}

.manifesto-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--text-1);
}

.manifesto-card p {
  margin: 0;
  color: var(--text-3);
  font-size: 0.92rem;
  line-height: 1.7;
}


/* ---------- Skill radar ---------- */
.about-radar-wrap {
  --radar-active-label: rgb(var(--radar-active));
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) 1.1fr;
  gap: 28px;
  align-items: center;
  padding: 28px clamp(20px, 3vw, 36px);
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  position: relative;
  overflow: hidden;
}

.about-radar-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(40% 40% at 25% 50%, color-mix(in srgb, var(--brand) 14%, transparent), transparent 70%),
    radial-gradient(40% 40% at 75% 50%, color-mix(in srgb, var(--brand-3) 12%, transparent), transparent 70%);
  pointer-events: none;
}

.about-radar {
  position: relative;
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
  aspect-ratio: 1 / 1;
}

.radar-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.radar-bgglow { animation: radar-pulse 4.6s var(--ease-in-out) infinite; transform-origin: center; }

@keyframes radar-pulse {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50%      { opacity: 1;    transform: scale(1.04); }
}

.radar-rings circle {
  fill: none;
  stroke: color-mix(in srgb, var(--brand) 22%, transparent);
  stroke-width: 1;
  stroke-dasharray: 3 4;
}

.radar-axes line {
  stroke: color-mix(in srgb, var(--brand) 18%, transparent);
  stroke-width: 1;
}

.radar-shape {
  fill: url(#radarFill);
  stroke: var(--brand-2);
  stroke-width: 1.4;
  filter: drop-shadow(0 0 12px color-mix(in srgb, var(--brand-2) 60%, transparent));
  transform-box: fill-box;
  transform-origin: center;
  transition: opacity 1.2s var(--ease-out), filter var(--t-base) var(--ease-out);
  opacity: 0.92;
  animation: radar-shape-breathe 3.8s var(--ease-in-out) infinite;
}

@keyframes radar-shape-breathe {
  0%, 100% { transform: scale(0.985); opacity: 0.78; }
  50% { transform: scale(1); opacity: 0.96; }
}

.radar-points circle {
  fill: var(--brand-2);
  stroke: #fff;
  stroke-width: 1.2;
  filter: drop-shadow(0 0 6px var(--brand-2));
  transition: r var(--t-fast) var(--ease-out), fill var(--t-fast) var(--ease-out), opacity var(--t-fast) var(--ease-out), filter var(--t-fast) var(--ease-out);
}

.radar-points circle.is-active { r: 7; }

.radar-labels text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  fill: var(--text-2);
  text-anchor: middle;
  transition: fill var(--t-fast) var(--ease-out), opacity var(--t-fast) var(--ease-out);
}

.radar-labels text.is-active {
  fill: var(--accent-fg);
  font-weight: 700;
}

.radar-sweep {
  stroke: url(#radarFill);
  stroke-width: 2;
  transform-origin: 0 0;
  animation: radar-sweep 4s linear infinite;
  filter: drop-shadow(0 0 6px var(--brand-2));
  opacity: 0.8;
}

@keyframes radar-sweep {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.radar-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 14px;
}

.radar-legend li {
  --accent: 124,140,255;
  --accent-ink: rgb(var(--accent));
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--bg-3) 60%, transparent);
  border: 1px solid var(--surface-border);
  cursor: default;
  transition: all var(--t-fast) var(--ease-out);
}

.radar-legend li:hover,
.radar-legend li:focus-visible,
.radar-legend li.is-active {
  border-color: var(--accent-ink);
  background: color-mix(in srgb, rgb(var(--accent)) 10%, var(--bg-3));
  transform: translateY(-2px);
  box-shadow: 0 10px 22px color-mix(in srgb, rgb(var(--accent)) 22%, transparent);
}

.radar-legend li:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

@supports selector(.about-radar-wrap:has(.radar-legend li:hover)) {
  .about-radar-wrap:has(.radar-legend li:is(:hover, :focus-visible)) .radar-shape {
    opacity: 0.42;
    filter: drop-shadow(0 0 7px color-mix(in srgb, var(--brand-2) 42%, transparent));
  }

  .about-radar-wrap:has(.radar-legend li:is(:hover, :focus-visible)) :is(.radar-points circle, .radar-labels text) {
    opacity: 0.28;
  }

  .about-radar-wrap:has(.radar-legend li:nth-child(1):is(:hover, :focus-visible)) { --radar-active: 124,140,255; }
  .about-radar-wrap:has(.radar-legend li:nth-child(2):is(:hover, :focus-visible)) { --radar-active: 89,227,255; }
  .about-radar-wrap:has(.radar-legend li:nth-child(3):is(:hover, :focus-visible)) { --radar-active: 184,136,255; }
  .about-radar-wrap:has(.radar-legend li:nth-child(4):is(:hover, :focus-visible)) { --radar-active: 124,255,180; }
  .about-radar-wrap:has(.radar-legend li:nth-child(5):is(:hover, :focus-visible)) { --radar-active: 251,191,36; }
  .about-radar-wrap:has(.radar-legend li:nth-child(6):is(:hover, :focus-visible)) { --radar-active: 248,113,113; }

  .about-radar-wrap:has(.radar-legend li:nth-child(1):is(:hover, :focus-visible)) .radar-svg [data-axis="0"],
  .about-radar-wrap:has(.radar-legend li:nth-child(2):is(:hover, :focus-visible)) .radar-svg [data-axis="1"],
  .about-radar-wrap:has(.radar-legend li:nth-child(3):is(:hover, :focus-visible)) .radar-svg [data-axis="2"],
  .about-radar-wrap:has(.radar-legend li:nth-child(4):is(:hover, :focus-visible)) .radar-svg [data-axis="3"],
  .about-radar-wrap:has(.radar-legend li:nth-child(5):is(:hover, :focus-visible)) .radar-svg [data-axis="4"],
  .about-radar-wrap:has(.radar-legend li:nth-child(6):is(:hover, :focus-visible)) .radar-svg [data-axis="5"] {
    fill: var(--radar-active-label);
    opacity: 1;
    font-weight: 700;
    filter: drop-shadow(0 0 8px rgba(var(--radar-active), 0.9));
  }

  .about-radar-wrap:has(.radar-legend li:nth-child(1):is(:hover, :focus-visible)) .radar-points [data-axis="0"],
  .about-radar-wrap:has(.radar-legend li:nth-child(2):is(:hover, :focus-visible)) .radar-points [data-axis="1"],
  .about-radar-wrap:has(.radar-legend li:nth-child(3):is(:hover, :focus-visible)) .radar-points [data-axis="2"],
  .about-radar-wrap:has(.radar-legend li:nth-child(4):is(:hover, :focus-visible)) .radar-points [data-axis="3"],
  .about-radar-wrap:has(.radar-legend li:nth-child(5):is(:hover, :focus-visible)) .radar-points [data-axis="4"],
  .about-radar-wrap:has(.radar-legend li:nth-child(6):is(:hover, :focus-visible)) .radar-points [data-axis="5"] {
    r: 7;
  }
}

.radar-legend .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgb(var(--accent));
  box-shadow: 0 0 10px rgb(var(--accent));
}

.radar-legend .r-name {
  font-size: 0.92rem;
  color: var(--text-1);
  font-weight: 600;
}

.radar-legend .r-desc {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-top: 2px;
}

.radar-legend .r-score {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-ink);
}

/* ---------- Timeline ---------- */
.about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 6px;
}

.about-timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--brand) 70%, transparent),
      color-mix(in srgb, var(--brand-2) 60%, transparent),
      color-mix(in srgb, var(--brand-3) 70%, transparent));
  border-radius: 2px;
  box-shadow: 0 0 24px color-mix(in srgb, var(--brand) 30%, transparent);
}

.about-timeline::after {
  content: "";
  position: absolute;
  left: 13px;
  top: -4px;
  width: 4px;
  height: 24px;
  background: linear-gradient(180deg, transparent, var(--brand-2), transparent);
  filter: blur(2px);
  animation: tl-runner 3.6s var(--ease-in-out) infinite;
  pointer-events: none;
}

@keyframes tl-runner {
  0%   { top: 0; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { top: calc(100% - 18px); opacity: 0; }
}

.about-timeline .tl-item {
  position: relative;
  padding: 0 0 28px 48px;
}

.about-timeline .tl-item:last-child {
  padding-bottom: 0;
}

.about-timeline .tl-node {
  position: absolute;
  left: 6px;
  top: 18px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff, var(--brand) 60%);
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--brand) 22%, transparent),
    0 0 18px color-mix(in srgb, var(--brand-2) 60%, transparent);
  transform: scale(1);
  opacity: 1;
  transition: transform var(--t-base) var(--ease-out), opacity var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
  animation: tl-node-pulse 2.4s var(--ease-in-out) infinite;
}

.about-timeline.is-enhanced .tl-node {
  transform: scale(0.7);
  opacity: 0.6;
  animation: none;
}

.about-timeline.is-enhanced .tl-item.is-in .tl-node {
  transform: scale(1);
  opacity: 1;
  animation: tl-node-pulse 2.4s var(--ease-in-out) infinite;
}

@keyframes tl-node-pulse {
  0%, 100% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 22%, transparent), 0 0 18px color-mix(in srgb, var(--brand-2) 60%, transparent); }
  50%      { box-shadow: 0 0 0 8px color-mix(in srgb, var(--brand) 12%, transparent), 0 0 28px color-mix(in srgb, var(--brand-2) 80%, transparent); }
}

.about-timeline .tl-card {
  position: relative;
  padding: 18px 22px 18px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  opacity: 1;
  transform: translateX(0);
  transition: opacity var(--t-slow) var(--ease-out), transform var(--t-slow) var(--ease-out), border-color var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out);
}

.about-timeline .tl-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(108deg, transparent 28%, color-mix(in srgb, var(--brand-2) 13%, transparent) 48%, transparent 68%);
  clip-path: inset(0 round var(--radius-lg));
  opacity: 0.72;
  pointer-events: none;
  transform: translateX(-115%);
  animation: tl-card-scan 7.2s var(--ease-in-out) infinite;
}

.about-timeline .tl-item:nth-child(2) .tl-card::after { animation-delay: -1.35s; }
.about-timeline .tl-item:nth-child(3) .tl-card::after { animation-delay: -2.7s; }
.about-timeline .tl-item:nth-child(4) .tl-card::after { animation-delay: -4.05s; }
.about-timeline .tl-item:nth-child(5) .tl-card::after { animation-delay: -5.4s; }
.about-timeline .tl-item:nth-child(6) .tl-card::after { animation-delay: -6.75s; }

@keyframes tl-card-scan {
  0%, 72% { transform: translateX(-115%); }
  92%, 100% { transform: translateX(115%); }
}

.about-timeline.is-enhanced .tl-card {
  opacity: 0;
  transform: translateX(20px);
}

.about-timeline.is-enhanced .tl-item.is-in .tl-card {
  opacity: 1;
  transform: translateX(0);
}

.about-timeline .tl-card::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 22px;
  width: 10px;
  height: 2px;
  background: color-mix(in srgb, var(--brand) 50%, transparent);
}

.about-timeline .tl-card:hover {
  border-color: color-mix(in srgb, var(--brand) 50%, transparent);
  box-shadow: 0 18px 40px color-mix(in srgb, var(--brand) 18%, transparent);
}

.tl-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.tl-year {
  color: var(--accent-fg);
  letter-spacing: 0.04em;
}

.tl-tag {
  padding: 2px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand-3) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand-3) 35%, transparent);
  color: var(--text-2);
  font-size: 0.74rem;
}

.tl-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: var(--text-1);
}

.tl-card p {
  margin: 0 0 10px;
  color: var(--text-2);
  font-size: 0.94rem;
  line-height: 1.7;
}

.tl-card p strong {
  color: var(--accent-fg);
}

.tl-card p em {
  color: var(--text-1);
  font-style: italic;
  background: linear-gradient(180deg, transparent 60%, color-mix(in srgb, var(--brand-2) 22%, transparent) 60%);
  padding: 0 3px;
}

.tl-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tl-chips span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 9px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--brand) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand) 24%, transparent);
  color: var(--text-2);
}

/* ---------- Tech stack chips ---------- */
.about-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 22px;
  border-radius: var(--radius-lg);
  background:
    repeating-linear-gradient(135deg,
      color-mix(in srgb, var(--brand) 4%, transparent) 0 10px,
      transparent 10px 20px),
    var(--surface);
  border: 1px solid var(--surface-border);
}

/* 技术栈按类型分行：每组占满一行，左侧是组名 */
.stack-group {
  flex: 1 0 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.stack-group-label {
  flex: 0 0 auto;
  min-width: 78px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
}

/* 首页 / 关于页的锚点跳转（#roadmap、#transition、#experience）留出顶部空隙 */
.landing-section[id] {
  scroll-margin-top: 28px;
}

.stack-chip {
  --i: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px 8px 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-3) 70%, transparent);
  border: 1px solid var(--surface-border);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--text-2);
  cursor: default;
  opacity: 0;
  transform: translateY(8px);
  animation: stack-rise 0.6s var(--ease-out) forwards;
  animation-delay: calc(var(--i) * 30ms);
  transition: transform var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out), box-shadow var(--t-fast) var(--ease-out);
}

@keyframes stack-rise {
  to { opacity: 1; transform: translateY(0); }
}

.stack-chip:hover {
  color: var(--text-1);
  border-color: color-mix(in srgb, var(--brand) 60%, transparent);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--brand) 22%, transparent);
}

.stack-chip .chip-glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--action-brand), var(--action-purple));
  color: var(--on-action);
  font-weight: 700;
  font-size: 0.74rem;
  letter-spacing: 0;
}

/* ---------- Contact cards ---------- */
.about-contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.contact-card {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  text-decoration: none;
  color: var(--text-2);
  overflow: hidden;
  transition: all var(--t-base) var(--ease-out);
}

.contact-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 16%, transparent), transparent 60%);
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-out);
  pointer-events: none;
}

.contact-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--brand) 55%, transparent);
  box-shadow: 0 18px 40px color-mix(in srgb, var(--brand) 22%, transparent);
}

.contact-card:hover::before { opacity: 1; }

.contact-icon {
  position: relative;
  z-index: 1;
  grid-row: span 2;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 25%, transparent), color-mix(in srgb, var(--brand-3) 18%, transparent));
  color: var(--accent-fg);
  border: 1px solid color-mix(in srgb, var(--brand) 35%, transparent);
}

.contact-icon svg { width: 22px; height: 22px; }

.contact-name {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
}

.contact-value {
  position: relative;
  z-index: 1;
  font-size: 0.96rem;
  color: var(--text-1);
  font-weight: 600;
  word-break: break-all;
}

.contact-arrow {
  position: relative;
  z-index: 1;
  grid-row: span 2;
  color: var(--text-3);
  transition: transform var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}

.contact-card:hover .contact-arrow {
  color: var(--link-hover-fg);
  transform: translateX(4px);
}

.about-foot {
  margin-top: 26px;
  padding: 18px 22px;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--bg-3) 60%, transparent);
  border: 1px dashed var(--surface-border);
  font-size: 0.9rem;
  color: var(--text-3);
  line-height: 1.7;
}

.about-foot strong {
  color: var(--accent-fg);
  letter-spacing: 0.02em;
}

.about-foot a {
  color: var(--content-link-fg);
  border-bottom: 1px dashed color-mix(in srgb, var(--content-link-fg) 75%, transparent);
}

.about-foot a:hover {
  color: var(--content-link-hover-fg);
  border-bottom-color: var(--content-link-hover-fg);
}

/* ---------- About: Light theme refinements ---------- */
[data-theme="light"] .about-hero {
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--brand) 8%, var(--bg-2)) 0%, var(--bg-2) 60%, color-mix(in srgb, var(--brand-3) 6%, var(--bg-2)) 100%);
}

[data-theme="light"] .holo-avatar::before {
  background: var(--bg-2);
}

[data-theme="light"] .about-terminal {
  background: linear-gradient(160deg, #0c1124 0%, #0e1430 100%);
}

[data-theme="light"] .about-stack {
  background:
    repeating-linear-gradient(135deg,
      color-mix(in srgb, var(--brand) 6%, transparent) 0 10px,
      transparent 10px 20px),
    var(--surface);
}

[data-theme="light"] :is(.skill-card, .manifesto-card, .radar-legend li) {
  --accent-ink: color-mix(in srgb, rgb(var(--accent)) 44%, var(--text-1));
}

[data-theme="light"] .about-radar-wrap {
  --radar-active-label: color-mix(in srgb, rgb(var(--radar-active)) 44%, var(--text-1));
}

[data-theme="light"] .article-content :is(.profile-panel, .profile-card) {
  --accent-ink: color-mix(in srgb, rgb(var(--accent)) 44%, var(--text-1));
  --accent-fill: color-mix(in srgb, rgb(var(--accent)) 44%, var(--text-1));
}

/* ---------- About: Mobile adaptation ---------- */
@media (max-width: 920px) {
  .about-hero {
    grid-template-columns: 1fr;
    padding: 36px 22px;
    gap: 22px;
  }

  .about-hero-content { order: 2; }
  .about-hologram { order: 1; max-width: 240px; }

  .about-title { font-size: clamp(1.6rem, 7vw, 2.4rem); }
  .about-typed { font-size: 0.92rem; margin-bottom: 18px; }

  .about-system-grid { grid-template-columns: 1fr; }

  .about-terminal {
    transform: none !important;
    font-size: 0.8rem;
  }
  .about-terminal:hover { transform: none !important; }
  .about-terminal .terminal-body { padding: 14px 14px 18px; line-height: 1.75; }

  .about-metric { padding: 14px 14px 12px; }
  .about-metric .m-value { font-size: 1.7rem; }
  .about-metric .m-value.about-metric-glyph { font-size: 2rem; }

  .about-radar-wrap {
    grid-template-columns: 1fr;
    padding: 22px 16px;
    gap: 18px;
  }

  .radar-legend {
    grid-template-columns: 1fr;
  }

  .about-radar { max-width: 320px; }

  .about-timeline { padding-left: 4px; }
  .about-timeline::before { left: 10px; }
  .about-timeline::after { left: 9px; }
  .about-timeline .tl-item { padding-left: 36px; padding-bottom: 22px; }
  .about-timeline .tl-node { left: 2px; }

  .manifesto-grid { grid-template-columns: 1fr; gap: 12px; }
  .about-contact-grid { grid-template-columns: 1fr; }

  .contact-card { padding: 18px 18px; }

  .about-stack { padding: 16px; gap: 8px; }
}

@media (max-width: 520px) {
  .about-hero { padding: 28px 16px; }
  .about-status { gap: 8px; }
  .status-pill { padding: 6px 11px; font-size: 0.74rem; }

  .about-metrics { grid-template-columns: 1fr 1fr; }
  .about-metric .m-value { font-size: 1.5rem; }
  .about-metric .m-value.about-metric-glyph { font-size: 1.7rem; }

  .radar-legend li { padding: 10px 12px; gap: 10px; }
  .radar-legend .r-name { font-size: 0.86rem; }
  .radar-legend .r-desc { font-size: 0.72rem; }

  .tl-card { padding: 16px 18px; }
  .stack-chip { padding: 6px 12px 6px 6px; font-size: 0.78rem; }
  .stack-chip .chip-glyph { width: 20px; height: 20px; font-size: 0.7rem; }
}

/* ---------- About: Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .holo-ring-1,
  .holo-ring-2,
  .holo-ring-3,
  .holo-orbit,
  .holo-avatar,
  .holo-scan,
  .radar-bgglow,
  .radar-shape,
  .radar-sweep,
  .about-scanline,
  .about-timeline .tl-node,
  .about-timeline .tl-card::after,
  .about-timeline::after {
    animation: none !important;
  }
  .about-title-line { animation: none !important; opacity: 1; transform: none; }
  .stack-chip { animation: none !important; opacity: 1; transform: none; }
}

/* ---------- About: Touch device tweaks ---------- */
@media (hover: none) and (pointer: coarse) {
  .about-terminal { transform: none !important; }
  .about-terminal:hover { transform: none !important; }
  .holo-rain { display: none; }
  .manifesto-card:hover,
  .contact-card:hover,
  .about-metric:hover,
  .stack-chip:hover,
  .radar-legend li:hover {
    transform: none !important;
  }
}


/* ==========================================================================
   Doc / Links page · 链接页（双行卡片：名称 + 一行说明）
   ========================================================================== */
.link-intro {
  margin: 0 0 24px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--brand) 8%, var(--bg-2));
  border: 1px dashed color-mix(in srgb, var(--brand) 28%, transparent);
  color: var(--text-2);
  font-size: 0.94rem;
  line-height: 1.7;
}

.link-intro strong {
  color: var(--accent-fg);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.link-cate-emoji {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-right: 10px;
  border-radius: 8px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 25%, transparent), color-mix(in srgb, var(--brand-3) 18%, transparent));
  border: 1px solid color-mix(in srgb, var(--brand) 30%, transparent);
  font-size: 0.9rem;
  vertical-align: -4px;
  filter: drop-shadow(0 4px 10px color-mix(in srgb, var(--brand) 22%, transparent));
}

/* 让 link-category 内的链接变成两行卡片 */
.link-category ul {
  /* 卡片需要更多宽度展示 desc，所以把 minmax 抬高 */
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.link-category a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: all var(--t-fast) var(--ease-out);
}

.link-category a::after {
  content: "↗";
  position: absolute;
  right: 12px;
  top: 12px;
  font-size: 0.85rem;
  color: var(--text-mute);
  transition: transform var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}

.link-category a:hover::after {
  color: var(--link-hover-fg);
  transform: translate(2px, -2px);
}

.link-category .link-name {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.96rem;
  color: var(--text-1);
  letter-spacing: 0.01em;
  padding-right: 18px; /* 给右上角箭头留位 */
}

.link-category .link-desc {
  display: block;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-3);
  font-family: var(--font-sans);
}

.link-category a:hover .link-desc {
  color: var(--text-2);
}

/* 触屏 / 窄屏：单列即可 */
@media (max-width: 920px) {
  .link-category ul {
    grid-template-columns: 1fr;
  }
  .link-category a { padding: 12px 14px; }
  .link-category .link-name { font-size: 0.94rem; }
  .link-category .link-desc { font-size: 0.78rem; }
  .link-cate-emoji {
    width: 24px;
    height: 24px;
    font-size: 0.84rem;
    margin-right: 8px;
    vertical-align: -3px;
  }
}


/* ==========================================================================
   Cross-page UI consistency · 全站 UI 统一规范
   - .hero-compact：archive / cate / doc / category 用的次级 hero（与 landing-hero / about-hero 同源但更紧凑）
   - skeleton：category 页 fetch 期间占位
   - 404 强化：hero-eyebrow + 双 CTA 排版
   - cate 切换淡入：原本散落在 cate.html 内联 <style>，迁回全局
   ========================================================================== */

/* ---------- Compact hero（次级页通用） ---------- */
.hero.hero-compact {
  padding: 28px clamp(20px, 4vw, 36px);
  margin: 8px 0 28px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--brand) 8%, var(--surface)) 0%, var(--surface) 60%);
}

.hero.hero-compact h1 {
  font-size: clamp(1.4rem, 2.8vw, 1.9rem);
  margin: 6px 0 8px;
  letter-spacing: -0.01em;
  /* 关闭 .hero h1 默认的 webkit-text-fill-color 让 .grad-text 内联生效 */
  background: none;
  -webkit-text-fill-color: var(--text-1);
  color: var(--text-1);
}

.hero.hero-compact p {
  font-size: 0.96rem;
  margin-bottom: 0;
}

.hero.hero-compact .hero-stats {
  margin-top: 18px;
  gap: 22px;
}

.hero.hero-compact .hero-stats .num {
  font-size: 1.2rem;
}

/* 让 .grad-text 在 hero 标题里依然能渐变（hero h1 默认带渐变填充会覆盖子元素） */
.hero h1 .grad-text {
  -webkit-text-fill-color: transparent;
  background-clip: text;
  -webkit-background-clip: text;
}

/* ---------- Section title 统一节奏 ---------- */
.cate-group .section-title:first-child,
.post-list + .section-title {
  margin-top: 28px;
}

/* archive 年份分组的 section-title 视觉感更强一点（数字感） */
.post-list + .post-list { margin-top: 8px; }

/* ---------- Skeleton（category 页 fetch 占位） ---------- */
.cate-chip.is-skel {
  position: relative;
  width: 92px;
  height: 36px;
  border: 1px solid var(--hairline);
  background: linear-gradient(90deg, var(--bg-2), color-mix(in srgb, var(--brand) 8%, var(--bg-2)), var(--bg-2));
  background-size: 200% 100%;
  animation: skel-shimmer 1.4s linear infinite;
  cursor: default;
  pointer-events: none;
}
.cate-chip.is-skel:nth-child(2) { width: 110px; }
.cate-chip.is-skel:nth-child(3) { width: 78px; }
.cate-chip.is-skel:nth-child(4) { width: 130px; }
.cate-chip.is-skel:nth-child(5) { width: 96px; }

.cate-list li.is-skel {
  pointer-events: none;
  cursor: default;
  background: var(--bg-2);
}

.cate-list li.is-skel .skel-bar {
  display: inline-block;
  height: 14px;
  border-radius: 7px;
  background: linear-gradient(90deg, var(--bg-3), color-mix(in srgb, var(--brand) 10%, var(--bg-3)), var(--bg-3));
  background-size: 200% 100%;
  animation: skel-shimmer 1.4s linear infinite;
}

.cate-list li.is-skel .skel-bar-lg { flex: 1; max-width: 60%; }
.cate-list li.is-skel .skel-bar-sm { width: 92px; height: 12px; }

@keyframes skel-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---------- cate.html 原内联动画（迁出来） ---------- */
@keyframes cate-fade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- 404 强化 ---------- */
.notfound-eyebrow {
  margin-bottom: 16px;
}

.notfound-cta {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 22px;
}

.notfound h1 {
  background: linear-gradient(120deg, var(--text-1), color-mix(in srgb, var(--brand-2) 60%, var(--text-1)));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- 全局：.btn 系列在窄屏下保持可触控 ---------- */
@media (max-width: 520px) {
  .hero.hero-compact { padding: 22px 16px; }
  .hero.hero-compact .hero-stats { gap: 14px; }
}

/* ---------- 触屏下：所有 hero stats / cate-chip / link-card 抖动归零（兜底） ---------- */
@media (hover: none) and (pointer: coarse) {
  .hero.hero-compact .hero-stats .stat:hover {
    transform: none !important;
    box-shadow: none !important;
  }
}

/* ---- 文末「下载源 PDF」按钮（无人车系列等转载文章使用） ---- */
.article-content .pdf-actions {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
  margin: 1.6rem 0 .4rem;
}
.article-content .pdf-btn {
  display: inline-flex;
  align-items: center;
  gap: .45em;
  padding: .58rem 1.05rem;
  border-radius: 9px;
  font-size: .92rem;
  line-height: 1;
  background: #2f6fed;
  color: #fff;
  text-decoration: none;
  border: 1px solid transparent;
  transition: color .15s, background-color .15s, border-color .15s, transform .15s;
}
.article-content .pdf-btn:hover {
  color: #fff;
  background-color: #245bc4;
  background-image: none;
  text-shadow: none;
  transform: translateY(-1px);
}
.article-content .pdf-btn-ghost {
  background: transparent;
  color: #2f6fed;
  border-color: #2f6fed;
}
.article-content .pdf-btn-ghost:hover {
  color: var(--link-fg);
  background: color-mix(in srgb, var(--link-fg) 10%, transparent);
  border-color: var(--link-fg);
}

/* ============================================================
   转载长文排版组件（速览卡 / 关键数据 / 署名 / 要点）
   ============================================================ */

/* 署名行：作者 · 来源 */
.article-content .post-byline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .9rem;
  margin: .2rem 0 1.6rem;
  padding: .55rem .9rem;
  border-radius: 10px;
  background: color-mix(in srgb, var(--brand) 8%, transparent);
  border: 1px solid var(--hairline);
  font-size: .9rem;
  color: var(--text-3);
}
.article-content .post-byline strong { color: var(--text-1); background: none; }
.article-content .post-byline .sep { color: var(--text-mute); }

/* 速览 / 核心摘要卡片 */
.article-content .post-tldr {
  margin: 1.8em 0;
  padding: 1.1rem 1.3rem 1.2rem;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--brand) 28%, transparent);
  border-left: 4px solid var(--brand);
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--brand) 12%, transparent),
      color-mix(in srgb, var(--brand-3) 7%, transparent));
}
.article-content .post-tldr .tldr-title {
  display: flex;
  align-items: center;
  gap: .5em;
  margin: 0 0 .7rem;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--text-1);
  letter-spacing: .01em;
}
.article-content .post-tldr .tldr-title::before {
  content: "";
  display: inline-block;
  width: 18px; height: 18px;
  border-radius: 5px;
  background: linear-gradient(135deg, var(--brand-2), var(--brand-3));
}
.article-content .post-tldr ul { margin: 0; padding: 0; list-style: none; }
.article-content .post-tldr li {
  position: relative;
  margin: .42rem 0;
  padding-left: 1.35em;
  color: var(--text-2);
  line-height: 1.7;
}
.article-content .post-tldr li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--brand-2);
  font-weight: 700;
}
.article-content .post-tldr li strong { color: var(--text-1); background: none; }

/* 关键数据网格 */
.article-content .post-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: .8rem;
  margin: 1.8em 0;
  padding: 0;
}
.article-content .post-stats .stat {
  padding: 1rem 1.05rem;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--surface-border, var(--hairline));
}
.article-content .post-stats .num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
  background: linear-gradient(120deg, var(--accent-fg), var(--action-purple));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.article-content .post-stats .lbl {
  display: block;
  margin-top: .4rem;
  font-size: .82rem;
  color: var(--text-3);
  line-height: 1.45;
}

/* 要点框（轻量提示） */
.article-content .post-note {
  margin: 1.6em 0;
  padding: .9rem 1.1rem;
  border-radius: 12px;
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent);
  color: var(--text-2);
  font-size: .95rem;
}
.article-content .post-note strong { color: var(--text-1); background: none; }

/* 验收 / 清单卡片：勾选框列表 */
.article-content .post-check {
  margin: 1.5em 0;
  padding: 1rem 1.25rem 1.05rem;
  border-radius: 14px;
  background:
    linear-gradient(135deg,
      color-mix(in srgb, var(--brand) 8%, transparent),
      color-mix(in srgb, var(--brand-2) 5%, transparent));
  border: 1px solid var(--surface-border);
  border-left: 3px solid color-mix(in srgb, var(--brand-2) 60%, transparent);
}
.article-content .post-check > :first-child { margin-top: 0; }
.article-content .post-check > :last-child { margin-bottom: 0; }
.article-content .post-check .check-title {
  display: flex;
  align-items: center;
  gap: .5em;
  margin: 0 0 .6rem;
  font-weight: 700;
  font-size: .96rem;
  color: var(--text-1);
  letter-spacing: .01em;
}
.article-content .post-check .check-title::before {
  content: "";
  flex: none;
  width: 16px; height: 16px;
  border-radius: 5px;
  background: linear-gradient(135deg, var(--brand-2), var(--brand-3));
}
.article-content .post-check ul { margin: 0; padding: 0; list-style: none; }
.article-content .post-check li {
  position: relative;
  margin: .4rem 0;
  padding-left: 1.9em;
  color: var(--text-2);
  line-height: 1.7;
}
.article-content .post-check li::before {
  content: "";
  position: absolute;
  left: 0; top: .28em;
  width: 1.08em; height: 1.08em;
  border-radius: 5px;
  border: 1.5px solid color-mix(in srgb, var(--brand-2) 55%, var(--hairline));
  background: color-mix(in srgb, var(--brand-2) 10%, transparent);
}
.article-content .post-check li::after {
  content: "";
  position: absolute;
  left: .36em; top: .40em;
  width: .32em; height: .6em;
  border: solid var(--brand-2);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.article-content .post-check li strong { color: var(--text-1); background: none; }
.article-content .post-check li code { font-size: .86em; }

/* 占比条形图（用于投入结构等比例数据） */
.article-content .post-bars {
  margin: 1.7em 0;
  display: grid;
  gap: .75rem;
}
.article-content .post-bars .bar-row {
  display: grid;
  grid-template-columns: minmax(6.5em, auto) 1fr 3.2em;
  align-items: center;
  gap: .85rem;
}
.article-content .post-bars .bar-label {
  font-size: .9rem;
  color: var(--text-2);
  line-height: 1.4;
}
.article-content .post-bars .bar-track {
  position: relative;
  height: 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-3) 70%, transparent);
  border: 1px solid var(--hairline);
  overflow: hidden;
}
.article-content .post-bars .bar-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand-2), var(--brand-3));
  box-shadow: 0 0 12px -2px color-mix(in srgb, var(--brand-2) 60%, transparent);
}
.article-content .post-bars .bar-val {
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 600;
  color: var(--accent-fg);
  text-align: right;
}
@media (max-width: 520px) {
  .article-content .post-bars .bar-row {
    grid-template-columns: 1fr 3.2em;
  }
  .article-content .post-bars .bar-label { grid-column: 1 / -1; margin-bottom: -.2rem; }
}

/* ============================================================
   个人概述 · Profile components（仅作用于 .article-content）
   玻璃卡片 + 旋转极光描边 + 扫描线 + 脉冲节点 + 时间线
   复用通用钩子：data-counter（数字滚动）/ data-tilt（3D 悬停）
   ============================================================ */

@property --pf-angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

@keyframes pf-spin   { to { --pf-angle: 360deg; } }
@keyframes pf-scan   { 0% { transform: translateY(-120%); } 100% { transform: translateY(420%); } }
@keyframes pf-pulse  { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.5); opacity: .45; } }
@keyframes pf-ring   { 0% { transform: scale(.6); opacity: .7; } 100% { transform: scale(2.4); opacity: 0; } }
@keyframes pf-float  { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
@keyframes pf-rise   { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ---------- Hero · 定义卡 ---------- */
.article-content .profile-hero {
  position: relative;
  margin: 1.4em 0 2.4em;
  padding: 1.6rem 1.7rem;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(var(--grid-color) 1px, transparent 1px) 0 0 / 26px 26px,
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px) 0 0 / 26px 26px,
    radial-gradient(120% 140% at 0% 0%, color-mix(in srgb, var(--brand) 18%, transparent), transparent 55%),
    radial-gradient(120% 140% at 100% 0%, color-mix(in srgb, var(--brand-2) 14%, transparent), transparent 55%),
    var(--surface-strong);
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  isolation: isolate;
}
/* 旋转极光描边（只显示 1px 边环，盖在背景之上） */
.article-content .profile-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: conic-gradient(from var(--pf-angle),
    var(--brand), var(--brand-2), var(--brand-3), var(--brand));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: .6;
  pointer-events: none;
  animation: pf-spin 9s linear infinite;
}
.article-content .profile-hero .pf-badge {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--text-3);
  text-transform: uppercase;
}
.article-content .profile-hero .pf-led {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--success) 60%, transparent);
  position: relative;
}
.article-content .profile-hero .pf-led::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: 50%;
  background: var(--success);
  animation: pf-ring 1.8s var(--ease-out) infinite;
}
.article-content .profile-hero .pf-name {
  margin: .55rem 0 .2rem;
  padding: 0;
  border: 0;
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-1);
}
.article-content .profile-hero .pf-name::before { display: none; }
.article-content .profile-hero .pf-grad {
  background: linear-gradient(110deg, var(--brand-2), var(--brand), var(--brand-3));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.article-content .profile-hero .pf-roles {
  display: flex; flex-wrap: wrap; gap: .5rem;
  margin: .9rem 0 1.1rem;
}
.article-content .profile-hero .pf-role {
  display: inline-flex; align-items: center; gap: .4em;
  padding: .3rem .7rem;
  font-size: .82rem;
  font-family: var(--font-mono);
  color: var(--text-2);
  background: color-mix(in srgb, var(--brand) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand) 30%, transparent);
  border-radius: 999px;
}
.article-content .profile-hero .pf-desc {
  margin: 0;
  color: var(--text-2);
  line-height: 1.8;
  font-size: .98rem;
}
.article-content .profile-hero .pf-desc strong { color: var(--text-1); background: none; }

/* ---------- Stat 数据条 ---------- */
.article-content .profile-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: .7rem;
  margin: 1.3rem 0 0;
}
.article-content .profile-stats .pf-stat {
  position: relative;
  padding: .85rem .9rem;
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--bg-2) 60%, transparent);
  border: 1px solid var(--surface-border);
  text-align: center;
  overflow: hidden;
}
.article-content .profile-stats .pf-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
  background: linear-gradient(120deg, var(--accent-fg), var(--action-purple));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.article-content .profile-stats .pf-lbl {
  display: block;
  margin-top: .3rem;
  font-size: .76rem;
  color: var(--text-3);
}

/* ---------- 通用面板（消除大段文字堆叠） ---------- */
.article-content .profile-panel {
  --accent: 124,140,255;
  --accent-ink: rgb(var(--accent));
  --accent-fill: rgb(var(--accent));
  position: relative;
  margin: 1.3em 0;
  padding: 1.15rem 1.3rem 1.15rem 1.4rem;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-left: 3px solid var(--accent-ink);
  transition: transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out), border-color var(--t-base);
}
.article-content .profile-panel:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent-ink) 55%, var(--surface-border));
  box-shadow: 0 18px 40px -22px rgb(var(--accent)), var(--shadow-1);
}
.article-content .profile-panel > :first-child { margin-top: 0; }
.article-content .profile-panel > :last-child  { margin-bottom: 0; }
.article-content .profile-panel p { color: var(--text-2); }
.article-content .profile-panel strong { color: var(--text-1); background: none; }

/* 面板小标题（带图标芯片） */
.article-content .pf-h {
  display: flex;
  align-items: center;
  gap: .7rem;
  margin: 0 0 .7rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-1);
}
.article-content .pf-ico {
  flex: none;
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent-fill), var(--action-purple));
  box-shadow: 0 6px 16px -6px rgb(var(--accent));
}
.article-content .pf-ico svg { width: 19px; height: 19px; }

/* ---------- 网格卡片 ---------- */
.article-content .profile-cards {
  display: grid;
  /* 固定三列，避免出现「一行两个、一行一个」的错落感 */
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 1.4em 0;
}
/* 平板及以下整列堆叠，保证每张卡片都有足够阅读宽度 */
@media (max-width: 920px) {
  .article-content .profile-cards { grid-template-columns: 1fr; }
}
.article-content .profile-card {
  --accent: 124,140,255;
  --accent-ink: rgb(var(--accent));
  --accent-fill: rgb(var(--accent));
  position: relative;
  padding: 1.05rem 1.05rem;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  overflow: hidden;
  transition: transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out), border-color var(--t-base);
  transform-style: preserve-3d;
}
.article-content .profile-card::after {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  background: radial-gradient(180px 180px at var(--mx,50%) var(--my,0%),
    color-mix(in srgb, rgb(var(--accent)) 22%, transparent), transparent 60%);
  opacity: 0;
  transition: opacity var(--t-base);
  pointer-events: none;
}
.article-content .profile-card:hover {
  border-color: color-mix(in srgb, var(--accent-ink) 55%, var(--surface-border));
  box-shadow: 0 22px 46px -24px rgb(var(--accent)), var(--shadow-1);
}
.article-content .profile-card:hover::after { opacity: 1; }
.article-content .profile-card .pf-h { font-size: 1rem; }
.article-content .profile-card p { margin: 0; color: var(--text-2); font-size: .92rem; line-height: 1.7; }
.article-content .profile-card strong { color: var(--text-1); background: none; }

/* 面板 / 卡片内的要点列表 */
.article-content .pf-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.article-content .pf-list li {
  position: relative;
  margin: .42rem 0;
  padding-left: 1.3em;
  color: var(--text-2);
  font-size: .92rem;
  line-height: 1.75;
}
.article-content .pf-list li::before {
  content: "";
  position: absolute;
  left: .15em; top: .62em;
  width: 6px; height: 6px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--brand-2), var(--brand-3));
}
.article-content .pf-list strong { color: var(--text-1); background: none; }

/* ---------- 时间线 ---------- */
.article-content .profile-timeline {
  position: relative;
  margin: 1.6em 0;
  padding: 0 0 0 30px;
  list-style: none;
}
.article-content .profile-timeline::before {
  content: "";
  position: absolute;
  left: 7px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--brand-2), var(--brand), var(--brand-3));
  opacity: .55;
}
.article-content .profile-timeline .pf-item {
  position: relative;
  margin: 0 0 1.05rem;
}
.article-content .profile-timeline .pf-item::before {
  content: "";
  position: absolute;
  left: -30px; top: 18px;
  margin-left: 1px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--brand-2);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand-2) 22%, transparent);
}
.article-content .profile-timeline .pf-item::after {
  content: "";
  position: absolute;
  left: -30px; top: 18px;
  margin-left: 1px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--brand-2);
  animation: pf-pulse 2.4s var(--ease-in-out) infinite;
}
.article-content .profile-timeline .pf-item:nth-child(1)::before,
.article-content .profile-timeline .pf-item:nth-child(1)::after { background: var(--brand-2); }
.article-content .profile-timeline .pf-card {
  padding: 1.05rem 1.2rem;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  transition: transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out), border-color var(--t-base);
}
.article-content .profile-timeline .pf-card:hover {
  transform: translateX(4px);
  border-color: color-mix(in srgb, var(--brand) 50%, var(--surface-border));
  box-shadow: 0 16px 36px -22px var(--brand), var(--shadow-1);
}
.article-content .pf-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: .55rem;
  margin-bottom: .4rem;
}
.article-content .pf-year {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 600;
  color: var(--accent-fg);
  letter-spacing: .02em;
}
.article-content .pf-tag {
  font-size: .72rem;
  padding: .12rem .55rem;
  border-radius: 999px;
  color: var(--text-2);
  background: color-mix(in srgb, var(--brand-3) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--brand-3) 28%, transparent);
}
.article-content .pf-card h4 {
  margin: .1rem 0 .4rem;
  font-size: 1.04rem;
  color: var(--text-1);
}
.article-content .pf-card p { margin: 0; color: var(--text-2); font-size: .92rem; line-height: 1.75; }
.article-content .pf-card strong { color: var(--text-1); background: none; }
.article-content .pf-chips {
  display: flex; flex-wrap: wrap; gap: .35rem;
  margin-top: .7rem;
}
.article-content .pf-chips span {
  font-family: var(--font-mono);
  font-size: .7rem;
  padding: .14rem .5rem;
  border-radius: 6px;
  color: var(--text-3);
  background: color-mix(in srgb, var(--bg-3) 70%, transparent);
  border: 1px solid var(--hairline);
}

/* ---------- 分层（AI 实践三层 / 多层） ---------- */
.article-content .profile-layers { margin: 1.4em 0; display: grid; gap: .75rem; }
.article-content .pf-layer {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .9rem;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  transition: transform var(--t-base) var(--ease-out), border-color var(--t-base);
}
.article-content .pf-layer:hover { transform: translateX(4px); border-color: color-mix(in srgb, var(--brand-2) 45%, var(--surface-border)); }
.article-content .pf-layer .pf-idx {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  width: 2.4rem;
  text-align: center;
  align-self: start;
  background: linear-gradient(120deg, var(--brand-2), var(--brand-3));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.article-content .pf-layer .pf-body { min-width: 0; }
.article-content .pf-layer .pf-body b,
.article-content .pf-layer .pf-name { color: var(--text-1); font-weight: 700; display: block; margin-bottom: .15rem; }
.article-content .pf-layer p { margin: 0; color: var(--text-2); font-size: .92rem; line-height: 1.7; }
.article-content .pf-layer strong { color: var(--text-1); background: none; }

/* ---------- 技术栈 chip 云 ---------- */
.article-content .profile-stack {
  display: flex; flex-wrap: wrap; gap: .5rem;
  margin: 1.3em 0;
}
.article-content .profile-stack .pf-skill {
  display: inline-flex; align-items: center; gap: .45em;
  padding: .4rem .8rem .4rem .5rem;
  border-radius: 999px;
  font-size: .85rem;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  transition: transform var(--t-fast) var(--ease-out), border-color var(--t-fast), color var(--t-fast);
  animation: pf-rise .5s var(--ease-out) both;
  animation-delay: calc(var(--i, 0) * 40ms);
}
.article-content .profile-stack .pf-skill:hover {
  transform: translateY(-3px);
  color: var(--text-1);
  border-color: color-mix(in srgb, var(--brand) 55%, var(--surface-border));
}
.article-content .profile-stack .pf-skill .g {
  display: grid; place-items: center;
  width: 22px; height: 22px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  color: var(--on-action);
  background: linear-gradient(135deg, var(--action-brand), var(--action-purple));
}

/* ---------- 一句话定位 ---------- */
.article-content .profile-quote {
  position: relative;
  margin: 1.8em 0 1em;
  padding: 1.5rem 1.6rem 1.5rem 3.4rem;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 120% at 100% 0%, color-mix(in srgb, var(--brand-3) 16%, transparent), transparent 55%),
    var(--surface-strong);
  border: 1px solid var(--surface-border);
  overflow: hidden;
}
.article-content .profile-quote::before {
  content: "\201C";
  position: absolute;
  left: .7rem; top: .2rem;
  font-family: Georgia, serif;
  font-size: 4rem;
  line-height: 1;
  background: linear-gradient(120deg, var(--brand-2), var(--brand-3));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: .8;
}
.article-content .profile-quote p { margin: 0 0 .4rem; color: var(--text-2); line-height: 1.85; }
.article-content .profile-quote p:last-child { margin-bottom: 0; }
.article-content .profile-quote strong { color: var(--text-1); background: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .article-content .profile-hero { padding: 1.2rem 1.1rem; }
  .article-content .profile-hero .pf-name { font-size: 1.4rem; }
  .article-content .profile-cards { grid-template-columns: 1fr; }
  .article-content .pf-layer { grid-template-columns: 1fr; gap: .4rem; }
  .article-content .pf-layer .pf-idx { text-align: left; width: auto; }
}

/* ---------- 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .article-content .profile-hero::before { animation: none; }
  .article-content .profile-timeline .pf-item::after { animation: none; }
  .article-content .profile-hero .pf-led::after { animation: none; }
  .article-content .profile-stack .pf-skill { animation: none; }
}

/* ==========================================================================
   AI musician identity + global audio dock
   ========================================================================== */

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.icon-btn--netease:hover {
  color: #ff4b5c;
  border-color: color-mix(in srgb, #ff4b5c 56%, transparent);
  box-shadow: 0 8px 20px color-mix(in srgb, #ff4b5c 28%, transparent);
}

.icon-btn--qqmusic:hover {
  color: #31d27c;
  border-color: color-mix(in srgb, #31d27c 56%, transparent);
  box-shadow: 0 8px 20px color-mix(in srgb, #31d27c 25%, transparent);
}

/* ---------- Personal music card ---------- */
.music-profile-section,
.about-music-section {
  position: relative;
}

.artist-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.45fr);
  min-height: 340px;
  border: 1px solid color-mix(in srgb, var(--brand-3) 38%, var(--surface-border));
  border-radius: var(--radius-xl);
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(100% 130% at 0% 45%, color-mix(in srgb, var(--brand-3) 25%, transparent), transparent 58%),
    radial-gradient(70% 100% at 100% 0%, color-mix(in srgb, var(--brand-2) 12%, transparent), transparent 64%),
    linear-gradient(140deg, color-mix(in srgb, var(--bg-2) 94%, transparent), color-mix(in srgb, var(--bg-0) 92%, transparent));
  box-shadow: var(--shadow-2), 0 0 80px color-mix(in srgb, var(--brand-3) 13%, transparent);
}

.artist-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.4;
  background-image:
    linear-gradient(color-mix(in srgb, var(--brand-2) 8%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--brand-3) 8%, transparent) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(90deg, #000, transparent 72%);
  -webkit-mask-image: linear-gradient(90deg, #000, transparent 72%);
}

.artist-card__visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 320px;
  overflow: hidden;
  perspective: 800px;
}

.artist-card__visual::after {
  content: "";
  position: absolute;
  width: 72%;
  height: 20%;
  bottom: 8%;
  border-radius: 50%;
  background: color-mix(in srgb, var(--brand-3) 30%, transparent);
  filter: blur(28px);
  transform: rotateX(68deg);
}

.artist-orbit {
  position: absolute;
  border: 1px solid color-mix(in srgb, var(--brand-2) 34%, transparent);
  border-radius: 50%;
  transform-style: preserve-3d;
}

.artist-orbit::before,
.artist-orbit::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 8px;
  height: 8px;
  margin-top: -4px;
  border-radius: 50%;
  background: var(--brand-2);
  box-shadow: 0 0 14px var(--brand-2);
}

.artist-orbit::before { left: -4px; }
.artist-orbit::after { right: -4px; background: var(--brand-3); box-shadow: 0 0 14px var(--brand-3); }
.artist-orbit--outer { width: 250px; height: 250px; animation: artist-orbit 16s linear infinite; }
.artist-orbit--inner { width: 205px; height: 205px; transform: rotateX(66deg) rotateZ(12deg); animation: artist-orbit-inner 11s linear infinite reverse; }

@keyframes artist-orbit {
  to { transform: rotate(360deg); }
}

@keyframes artist-orbit-inner {
  from { transform: rotateX(66deg) rotateZ(12deg); }
  to { transform: rotateX(66deg) rotateZ(372deg); }
}

.artist-disc {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 164px;
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, var(--bg-0) 0 7%, transparent 7.5% 12%, color-mix(in srgb, var(--brand-2) 65%, #fff) 12.5% 13%, transparent 13.5%),
    repeating-radial-gradient(circle at center, transparent 0 6px, rgba(255,255,255,0.08) 7px, transparent 8px),
    conic-gradient(from 210deg, #090b14, #4c397e, #0b2432, #111423, #69498f, #090b14);
  border: 1px solid rgba(255,255,255,0.18);
  box-shadow: 0 22px 55px rgba(0,0,0,0.55), 0 0 42px color-mix(in srgb, var(--brand-3) 36%, transparent);
  transform: rotateX(8deg);
  animation: artist-disc-float 5s var(--ease-in-out) infinite alternate;
}

.artist-disc::before {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: inherit;
  background: linear-gradient(115deg, rgba(255,255,255,0.22), transparent 28% 72%, rgba(89,227,255,0.14));
  mix-blend-mode: screen;
}

.artist-disc span {
  position: relative;
  font: 800 2.4rem/1 var(--font-mono);
  letter-spacing: -0.12em;
  padding-right: 0.12em;
  color: #fff;
  text-shadow: 0 0 24px var(--brand-2);
}

.artist-disc small {
  position: relative;
  margin-top: 9px;
  font: 600 0.58rem/1 var(--font-mono);
  letter-spacing: 0.26em;
  color: rgba(255,255,255,0.7);
}

@keyframes artist-disc-float {
  to { transform: rotateX(8deg) translateY(-8px) rotate(3deg); }
}

.artist-wave {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 35px;
  display: flex;
  align-items: end;
  gap: 5px;
  height: 38px;
  transform: translateX(-50%);
}

.artist-wave span {
  width: 3px;
  height: 45%;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--brand-2), var(--brand-3));
  box-shadow: 0 0 9px color-mix(in srgb, var(--brand-2) 70%, transparent);
  animation: artist-wave 1.1s ease-in-out infinite alternate;
}

.artist-wave span:nth-child(2), .artist-wave span:nth-child(6) { animation-delay: -0.32s; height: 75%; }
.artist-wave span:nth-child(3), .artist-wave span:nth-child(5) { animation-delay: -0.64s; height: 100%; }
.artist-wave span:nth-child(4) { animation-delay: -0.88s; height: 58%; }

@keyframes artist-wave {
  to { transform: scaleY(0.35); opacity: 0.58; }
}

.artist-card__content {
  align-self: center;
  padding: 42px clamp(28px, 4vw, 56px) 42px 18px;
}

.artist-card__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font: 600 0.7rem/1.4 var(--font-mono);
  letter-spacing: 0.14em;
  color: var(--accent-fg);
}

.artist-card__badge > span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 16%, transparent), 0 0 12px var(--success);
}

.artist-card__content h3 {
  margin: 0 0 14px;
  font-size: clamp(1.55rem, 3vw, 2.45rem);
  background: linear-gradient(115deg, var(--text-1), var(--accent-fg) 50%, var(--action-purple));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.artist-card__content p {
  max-width: 680px;
  margin: 0 0 18px;
  font-size: 0.98rem;
  line-height: 1.82;
  color: var(--text-2);
}

.artist-card__content p strong,
.artist-card__note strong { color: var(--accent-fg); }

.artist-card__note {
  padding-left: 14px;
  border-left: 2px solid color-mix(in srgb, var(--brand-3) 72%, transparent);
  color: var(--text-3) !important;
}

.artist-track {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  max-width: 650px;
  margin: 20px 0;
  padding: 12px 14px;
  border: 1px solid color-mix(in srgb, var(--brand) 25%, var(--surface-border));
  border-radius: 12px;
  background: color-mix(in srgb, var(--bg-3) 62%, transparent);
}

.artist-track__label {
  padding: 4px 8px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--brand) 18%, transparent);
  color: var(--accent-fg);
  font: 600 0.62rem/1.3 var(--font-mono);
  letter-spacing: 0.08em;
}

.artist-track strong { color: var(--text-1); font-size: 0.92rem; }
.artist-track > span:last-child { color: var(--text-3); font: 0.72rem/1.4 var(--font-mono); text-align: right; }

.artist-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.artist-card__actions .btn {
  appearance: none;
  font-family: inherit;
}

/* ---------- Global audio dock ---------- */
.music-dock {
  --music-accent: #8d7cff;
  --music-cyan: #59e3ff;
  --seek: 0%;
  --buffered: 0%;
  --volume: 72%;
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(14px, env(safe-area-inset-bottom));
  z-index: 88;
  width: min(388px, calc(100vw - 32px));
  color: var(--text-1);
  border-radius: 16px;
  isolation: isolate;
  filter: drop-shadow(0 14px 30px rgba(0,0,0,0.34));
  transition: width 300ms var(--ease-out), transform 260ms var(--ease-out), opacity 180ms ease, filter 180ms ease;
}

.music-dock__glass {
  position: relative;
  padding: 8px 9px 7px;
  border-radius: inherit;
  overflow: hidden;
  border: 1px solid rgba(190,202,235,0.17);
  background: linear-gradient(145deg, rgba(17,22,36,0.94), rgba(7,11,20,0.92));
  backdrop-filter: blur(18px) saturate(138%);
  -webkit-backdrop-filter: blur(18px) saturate(138%);
  box-shadow: inset 0 1px rgba(255,255,255,0.07), inset 0 -1px rgba(255,255,255,0.025);
}

.music-dock__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}

.music-dock.is-dragging {
  filter: drop-shadow(0 20px 42px rgba(0,0,0,0.52));
  transition: none;
}

.music-dock.is-dragging .music-dock__head { cursor: grabbing; }

.music-play,
.music-skip,
.music-queue-toggle,
.music-track,
.music-collapse,
.music-edge-toggle,
.music-mute {
  appearance: none;
  border: 0;
  color: inherit;
  cursor: pointer;
  font: inherit;
}

.music-transport {
  display: grid;
  grid-template-columns: 20px 40px 20px;
  align-items: center;
  gap: 2px;
}

.music-skip {
  display: grid;
  place-items: center;
  width: 20px;
  height: 28px;
  padding: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--text-mute);
  transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}

.music-skip:hover {
  color: var(--text-1);
  background: color-mix(in srgb, var(--text-1) 7%, transparent);
  transform: scale(1.04);
}

.music-skip svg { width: 12px; height: 12px; }

.music-play {
  position: relative;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, color-mix(in srgb, var(--music-accent) 92%, #fff), color-mix(in srgb, var(--music-cyan) 82%, #fff));
  box-shadow: 0 7px 18px rgba(80,91,225,0.28), inset 0 1px rgba(255,255,255,0.42);
  transition: transform 180ms ease, box-shadow 220ms ease;
}

.music-play::before {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: inherit;
  background: rgba(9,13,23,0.88);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
}

.music-play:hover { transform: scale(1.045); box-shadow: 0 9px 22px rgba(80,91,225,0.38), inset 0 1px rgba(255,255,255,0.5); }
.music-play:active { transform: scale(0.96); }

.music-play__icon {
  position: relative;
  z-index: 1;
  width: 17px;
  height: 17px;
}

.music-play__icon--pause { display: none; }
.music-dock.is-playing .music-play__icon--play { display: none; }
.music-dock.is-playing .music-play__icon--pause { display: block; }

.music-dock__meta {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.music-dock__kicker {
  display: flex;
  align-items: center;
  gap: 5px;
  overflow: hidden;
  color: var(--text-mute);
  font: 600 0.5rem/1.15 var(--font-mono);
  letter-spacing: 0.1em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.music-live-dot {
  width: 5px;
  height: 5px;
  flex: none;
  border-radius: 50%;
  background: var(--text-mute);
  transition: background 180ms ease, box-shadow 180ms ease;
}

.music-dock.is-playing .music-live-dot {
  background: #5df0a4;
  box-shadow: 0 0 7px rgba(93,240,164,0.72);
}

.music-dock.is-buffering .music-live-dot {
  background: var(--music-cyan);
  box-shadow: 0 0 9px color-mix(in srgb, var(--music-cyan) 78%, transparent);
  animation: music-buffer-pulse 1.25s ease-in-out infinite;
}

.music-dock.is-buffering .music-dock__kicker {
  color: color-mix(in srgb, var(--music-cyan) 82%, #fff);
}

.music-dock.is-buffering .music-play__icon--play { display: none; }
.music-dock.is-buffering .music-play__icon--pause { display: block; }

.music-dock.is-resume-pending .music-live-dot {
  background: var(--warning);
  box-shadow: 0 0 10px color-mix(in srgb, var(--warning) 78%, transparent);
}

.music-dock.is-resume-pending .music-dock__kicker {
  color: color-mix(in srgb, var(--warning) 85%, #fff);
}

.music-dock__meta strong {
  overflow: hidden;
  color: var(--text-1);
  font-size: 0.8rem;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.music-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 2px;
  min-width: 0;
}

.music-queue-toggle,
.music-mute,
.music-collapse {
  display: grid;
  place-items: center;
  flex: none;
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: 8px;
  border: 0;
  background: transparent;
  color: var(--text-mute);
  transition: background 160ms ease, color 160ms ease, transform 260ms var(--ease-out);
}

.music-queue-toggle:hover,
.music-mute:hover,
.music-collapse:hover {
  background: color-mix(in srgb, var(--text-1) 8%, transparent);
  color: var(--text-1);
}

.music-queue-toggle svg,
.music-mute svg,
.music-collapse svg { width: 15px; height: 15px; }
.music-collapse svg { transition: transform 280ms var(--ease-out); }

.music-edge-toggle {
  display: grid;
  place-items: center;
  flex: none;
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: 8px;
  background: transparent;
  color: color-mix(in srgb, var(--music-cyan) 60%, var(--text-mute));
  transition: background 180ms ease, color 180ms ease, transform 240ms var(--ease-out);
}

.music-edge-toggle:hover {
  color: var(--text-1);
  background: color-mix(in srgb, var(--music-cyan) 11%, transparent);
}

.music-edge-toggle svg {
  width: 16px;
  height: 16px;
  transition: transform 320ms var(--ease-out);
}

.music-timeline {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) 28px;
  align-items: center;
  gap: 6px;
  min-height: 12px;
  margin-top: 2px;
}

.music-time {
  color: var(--text-mute);
  font: 0.52rem/1 var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.music-time:last-child { text-align: right; }
.music-seek-wrap, .music-volume-wrap { display: flex; align-items: center; min-width: 0; }

.music-seek,
.music-volume {
  width: 100%;
  height: 14px;
  margin: 0;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  cursor: pointer;
  touch-action: pan-y;
}

.music-seek::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg,
    var(--music-cyan) 0 var(--seek),
    color-mix(in srgb, var(--text-mute) 48%, transparent) var(--seek) var(--buffered),
    color-mix(in srgb, var(--text-mute) 18%, transparent) var(--buffered) 100%);
}

.music-seek::-moz-range-track {
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg,
    var(--music-cyan) 0 var(--seek),
    color-mix(in srgb, var(--text-mute) 48%, transparent) var(--seek) var(--buffered),
    color-mix(in srgb, var(--text-mute) 18%, transparent) var(--buffered) 100%);
}

.music-seek::-webkit-slider-thumb,
.music-volume::-webkit-slider-thumb {
  width: 10px;
  height: 10px;
  margin-top: -3.5px;
  appearance: none;
  -webkit-appearance: none;
  border: 2px solid rgba(255,255,255,0.86);
  border-radius: 50%;
  background: var(--music-cyan);
  box-shadow: 0 0 8px rgba(89,227,255,0.42);
  opacity: 0;
  transform: scale(0.72);
  transition: opacity 140ms ease, transform 140ms ease;
}

.music-seek::-moz-range-thumb,
.music-volume::-moz-range-thumb {
  width: 8px;
  height: 8px;
  border: 2px solid rgba(255,255,255,0.86);
  border-radius: 50%;
  background: var(--music-cyan);
  box-shadow: 0 0 8px rgba(89,227,255,0.42);
}

.music-seek:hover::-webkit-slider-thumb,
.music-seek:focus-visible::-webkit-slider-thumb,
.music-volume:hover::-webkit-slider-thumb,
.music-volume:focus-visible::-webkit-slider-thumb { opacity: 1; transform: scale(1); }

.music-dock__details {
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition: max-height 300ms var(--ease-out), margin 300ms var(--ease-out), opacity 180ms ease, transform 300ms var(--ease-out);
}

.music-dock.is-queue-open .music-dock__details {
  max-height: 190px;
  margin-top: 7px;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.music-dock__foot {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 23px;
  padding: 0 2px;
}

.music-queue-toggle {
  color: var(--text-mute);
}

.music-queue-toggle:hover,
.music-dock.is-queue-open .music-queue-toggle {
  color: var(--text-1);
  background: color-mix(in srgb, var(--music-accent) 13%, transparent);
}

@keyframes music-buffer-pulse {
  0%, 100% { opacity: 0.48; transform: scale(0.82); }
  50% { opacity: 1; transform: scale(1.12); }
}

.music-playlist {
  display: grid;
  gap: 3px;
  max-height: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 160ms ease, transform 180ms var(--ease-out);
}

.music-dock.is-queue-open .music-playlist {
  max-height: 126px;
  margin-top: 8px;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
  overflow-y: auto;
  scrollbar-width: thin;
}

.music-track {
  position: relative;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 36px;
  padding: 4px 9px 4px 7px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: color-mix(in srgb, var(--text-1) 2.5%, transparent);
  color: var(--text-2);
  text-align: left;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.music-track:hover {
  color: var(--text-1);
  background: color-mix(in srgb, var(--text-1) 6%, transparent);
  transform: translateX(1px);
}

.music-track.is-active {
  color: var(--text-1);
  border-color: color-mix(in srgb, var(--music-cyan) 34%, transparent);
  background: linear-gradient(90deg, color-mix(in srgb, var(--music-accent) 13%, transparent), color-mix(in srgb, var(--music-cyan) 6%, transparent));
}

.music-track.is-active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  bottom: 9px;
  width: 2px;
  border-radius: 999px;
  background: var(--music-cyan);
  box-shadow: 0 0 9px var(--music-cyan);
}

.music-track__index,
.music-track__duration {
  font: 0.56rem/1 var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--text-mute);
}

.music-track.is-active .music-track__index { color: var(--music-cyan); }

.music-track__info {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.music-track__info strong {
  overflow: hidden;
  font-size: 0.7rem;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.music-track__info small {
  color: var(--text-mute);
  font: 0.5rem/1.2 var(--font-mono);
}

.music-volume-off { display: none; }
.music-dock.is-muted .music-volume-on { display: none; }
.music-dock.is-muted .music-volume-off { display: block; }

.music-volume-wrap {
  width: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: width 220ms var(--ease-out), opacity 160ms ease;
}

.music-actions:hover .music-volume-wrap,
.music-actions:focus-within .music-volume-wrap {
  width: 42px;
  opacity: 1;
  pointer-events: auto;
}

.music-volume::-webkit-slider-runnable-track {
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(141,124,255,0.95) 0 var(--volume), color-mix(in srgb, var(--text-mute) 18%, transparent) var(--volume) 100%);
}
.music-volume::-moz-range-track {
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(141,124,255,0.95) 0 var(--volume), color-mix(in srgb, var(--text-mute) 18%, transparent) var(--volume) 100%);
}
.music-volume::-webkit-slider-thumb { width: 9px; height: 9px; margin-top: -3px; box-shadow: none; background: #b6adff; }
.music-volume::-moz-range-thumb { width: 7px; height: 7px; box-shadow: none; background: #b6adff; }

.music-dock.is-collapsed { width: min(252px, calc(100vw - 32px)); }
.music-dock.is-collapsed .music-transport { grid-template-columns: 40px; }
.music-dock.is-collapsed .music-skip,
.music-dock.is-collapsed .music-queue-toggle,
.music-dock.is-collapsed .music-mute,
.music-dock.is-collapsed .music-volume-wrap,
.music-dock.is-collapsed .music-edge-toggle,
.music-dock.is-collapsed .music-dock__details { display: none; }
.music-dock.is-collapsed .music-collapse svg { transform: rotate(180deg); }
.music-dock.is-collapsed .music-timeline {
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  min-height: 3px;
  height: 3px;
  margin-top: 2px;
  overflow: hidden;
}
.music-dock.is-collapsed .music-seek { height: 3px; }
.music-dock.is-collapsed .music-time { display: none; }

.music-dock.is-edge-docked {
  width: 50px;
  filter: drop-shadow(0 10px 22px rgba(0,0,0,0.32));
}

.music-dock.is-edge-docked.is-edge-left { border-radius: 0 14px 14px 0; }
.music-dock.is-edge-docked.is-edge-right { border-radius: 14px 0 0 14px; }
.music-dock.is-edge-docked .music-dock__glass { padding: 5px 4px; }
.music-dock.is-edge-docked .music-dock__head {
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: default;
  touch-action: auto;
}
.music-dock.is-edge-docked .music-dock__meta,
.music-dock.is-edge-docked .music-collapse,
.music-dock.is-edge-docked .music-timeline,
.music-dock.is-edge-docked .music-dock__details,
.music-dock.is-edge-docked .music-queue-toggle,
.music-dock.is-edge-docked .music-mute,
.music-dock.is-edge-docked .music-volume-wrap { display: none; }
.music-dock.is-edge-docked .music-transport { display: block; }
.music-dock.is-edge-docked .music-play { width: 40px; height: 40px; }
.music-dock.is-edge-docked .music-actions { display: block; }
.music-dock.is-edge-docked .music-edge-toggle { display: grid; width: 40px; height: 28px; }
.music-dock.is-edge-docked.is-edge-right .music-edge-toggle svg { transform: rotate(180deg); }

.music-play:focus-visible,
.music-skip:focus-visible,
.music-queue-toggle:focus-visible,
.music-track:focus-visible,
.music-collapse:focus-visible,
.music-edge-toggle:focus-visible,
.music-mute:focus-visible,
.music-seek:focus-visible,
.music-volume:focus-visible {
  outline: 2px solid var(--music-focus, var(--music-cyan));
  outline-offset: 3px;
}

.fab { bottom: 92px; }
.music-dock.is-queue-open ~ .fab { bottom: 264px; }
.music-dock.is-edge-docked.is-edge-right ~ .fab {
  right: 64px;
  right: max(64px, calc(env(safe-area-inset-right) + 60px));
}

.is-menu-open .music-dock {
  opacity: 0.16;
  transform: translateY(12px);
  pointer-events: none;
}

[data-theme="light"] .music-dock {
  filter: drop-shadow(0 12px 26px rgba(29,42,79,0.18));
}

[data-theme="light"] .music-dock__glass {
  border-color: rgba(45,62,105,0.14);
  background: linear-gradient(145deg, rgba(255,255,255,0.94), rgba(241,245,253,0.9));
  box-shadow: inset 0 1px rgba(255,255,255,0.9), inset 0 -1px rgba(53,74,122,0.05);
}

[data-theme="light"] .music-play::before { background: rgba(250,252,255,0.94); }

/* ---------- Persistent player / PJAX navigation ---------- */
.pjax-enabled .main {
  transition: opacity 180ms ease, transform 220ms var(--ease-out);
}

.pjax-enabled .main[tabindex="-1"]:focus { outline: none; }

.pjax-enabled body.is-pjax-loading .main {
  opacity: 0.42;
  transform: translateY(4px);
  pointer-events: none;
}

.pjax-enabled body.is-pjax-loading::after {
  content: "";
  position: fixed;
  z-index: 240;
  top: 0;
  left: 0;
  width: 42%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--brand-2), var(--brand-3));
  box-shadow: 0 0 14px color-mix(in srgb, var(--brand-2) 68%, transparent);
  animation: pjax-progress 900ms ease-in-out infinite;
  pointer-events: none;
}

@keyframes pjax-progress {
  from { transform: translateX(-110%); }
  to { transform: translateX(340%); }
}

@media (max-width: 920px) {
  .artist-card {
    grid-template-columns: minmax(190px, 0.62fr) minmax(0, 1.38fr);
    min-height: 0;
  }
  .artist-card__visual { min-height: 300px; }
  .artist-card__content { padding: 32px 24px 32px 8px; }

  .music-dock {
    right: max(10px, env(safe-area-inset-right));
    bottom: max(10px, env(safe-area-inset-bottom));
    width: calc(100vw - max(24px, env(safe-area-inset-left) + env(safe-area-inset-right)));
    max-width: 388px;
  }
  .music-dock.is-collapsed { width: min(252px, calc(100vw - 24px)); }
  .main,
  .is-landing .main { padding-bottom: max(104px, calc(env(safe-area-inset-bottom) + 92px)); }
  .music-dock.is-collapsed ~ .fab,
  .fab { bottom: max(90px, calc(env(safe-area-inset-bottom) + 78px)); }
  .music-dock.is-queue-open ~ .fab { bottom: max(264px, calc(env(safe-area-inset-bottom) + 252px)); }
}

@media (max-width: 680px) {
  .artist-card { grid-template-columns: 1fr; }
  .artist-card__visual { min-height: 250px; }
  .artist-orbit--outer { width: 218px; height: 218px; }
  .artist-orbit--inner { width: 178px; height: 178px; }
  .artist-disc { width: 142px; }
  .artist-wave { bottom: 24px; }
  .artist-card__content { padding: 8px 20px 28px; text-align: left; }
  .artist-track { grid-template-columns: 1fr; gap: 6px; }
  .artist-track > span:last-child { text-align: left; }
  .music-dock__head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    cursor: default;
    touch-action: auto;
  }
  .music-actions:hover .music-volume-wrap,
  .music-actions:focus-within .music-volume-wrap,
  .music-volume-wrap,
  .music-edge-toggle { display: none; }
  .music-dock.is-collapsed { width: 88px; }
  .music-dock.is-collapsed .music-dock__glass { padding: 6px; }
  .music-dock.is-collapsed .music-dock__head { grid-template-columns: 40px 34px; gap: 4px; }
  .music-dock.is-collapsed .music-dock__meta,
  .music-dock.is-collapsed .music-timeline { display: none; }
  .music-queue-toggle,
  .music-mute,
  .music-collapse,
  .music-edge-toggle { width: 34px; height: 34px; }
  .music-dock.is-edge-docked { width: 64px; }
  .music-dock.is-edge-docked .music-edge-toggle { display: grid; width: 40px; height: 28px; }
}

@media (max-width: 480px) {
  .music-dock { border-radius: 14px; }
  .music-dock__glass { padding: 7px 8px 6px; }
  .music-dock__head { gap: 6px; }
  .music-transport { grid-template-columns: 18px 38px 18px; gap: 1px; }
  .music-skip { width: 18px; }
  .music-play { width: 38px; height: 38px; }
  .music-dock__kicker { font-size: 0.47rem; letter-spacing: 0.08em; }
  .music-dock__meta strong { font-size: 0.76rem; }
  .music-track { min-height: 38px; }
  .music-dock.is-collapsed { width: 86px; }
  .music-dock.is-collapsed.is-edge-docked { width: 64px; }
  .fab { right: 14px; }
  .artist-card__content h3 { font-size: 1.55rem; }
  .artist-card__actions { display: grid; grid-template-columns: 1fr; }
  .artist-card__actions .btn { justify-content: center; width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .artist-orbit,
  .artist-disc,
  .artist-wave span,
  .music-live-dot { animation: none !important; }
  .music-dock { transition-duration: 0.01ms; }
  .pjax-enabled .main { transition-duration: 0.01ms; }
  .pjax-enabled body.is-pjax-loading::after { animation: none; width: 100%; }
}

/* ---------- Music dock v4: compact hierarchy + compositor-only state changes ---------- */
.music-dock {
  --music-safe-top: env(safe-area-inset-top, 0px);
  --music-safe-bottom: env(safe-area-inset-bottom, 0px);
  --music-safe-left: env(safe-area-inset-left, 0px);
  --music-safe-right: env(safe-area-inset-right, 0px);
  --music-focus: var(--music-cyan);
  --music-seek-active: var(--music-cyan);
  --music-seek-buffered: rgba(184,196,230,0.34);
  --music-seek-rest: rgba(184,196,230,0.13);
  --music-seek-thumb: var(--music-cyan);
  --music-seek-thumb-ring: rgba(89,227,255,0.13);
  --music-seek-thumb-glow: rgba(89,227,255,0.55);
  --music-volume-active: rgba(141,124,255,0.95);
  --music-volume-rest: rgba(184,196,230,0.13);
  --music-volume-thumb: #b6adff;
  right: max(12px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  width: min(420px, calc(100vw - 28px));
  color: #f7f8ff;
  border-radius: 19px;
  contain: layout paint style;
  filter: none;
  transition: transform 240ms var(--ease-out), opacity 180ms ease;
}

.music-dock.is-layout-transitioning {
  will-change: transform;
}

.music-dock.is-dragging {
  filter: none;
  transition: none;
}

.main,
.is-landing .main {
  padding-bottom: max(116px, calc(env(safe-area-inset-bottom) + 104px));
}

.music-dock:not(.is-collapsed):not(.is-edge-docked) ~ .fab {
  bottom: max(142px, calc(env(safe-area-inset-bottom) + 130px));
}

.music-dock.is-queue-open:not(.is-edge-docked) ~ .fab {
  bottom: max(278px, calc(env(safe-area-inset-bottom) + 266px));
}

.music-dock::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(125deg, rgba(255,255,255,0.34), color-mix(in srgb, var(--music-cyan) 62%, transparent), color-mix(in srgb, var(--music-accent) 68%, transparent), rgba(255,255,255,0.1));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

.music-dock__glass {
  z-index: 2;
  padding: 11px 12px 10px;
  border: 0;
  background: linear-gradient(145deg, rgba(20,22,39,0.93), rgba(7,10,20,0.9));
  backdrop-filter: blur(16px) saturate(138%);
  -webkit-backdrop-filter: blur(16px) saturate(138%);
  box-shadow: 0 18px 44px rgba(0,0,0,0.4), inset 0 1px rgba(255,255,255,0.08), inset 0 -1px rgba(255,255,255,0.035);
}

.music-dock__glass::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 2px;
  border-radius: 999px 999px 0 0;
  background: linear-gradient(90deg, var(--music-cyan) 0 var(--seek), rgba(184,196,230,0.26) var(--seek) var(--buffered), rgba(184,196,230,0.08) var(--buffered) 100%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
}

.music-dock__visualizer {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  opacity: 0.18;
  pointer-events: none;
  mask-image: linear-gradient(90deg, transparent 0%, #000 24%, #000 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 24%, #000 100%);
  transition: opacity 140ms ease;
}

.music-dock__glow {
  position: absolute;
  z-index: 0;
  inset: 26% 9% -20%;
  border-radius: 50%;
  background: linear-gradient(90deg, var(--music-accent), var(--music-cyan));
  filter: blur(22px);
  opacity: 0.12;
  transition: opacity 180ms ease;
}

.music-dock.is-playing .music-dock__glow {
  opacity: 0.22;
}

.music-dock.is-layout-transitioning .music-dock__visualizer,
.music-dock.is-layout-transitioning .music-dock__glow,
.music-dock.is-collapsed .music-dock__visualizer,
.music-dock.is-collapsed .music-dock__glow,
.music-dock.is-edge-docked .music-dock__visualizer,
.music-dock.is-edge-docked .music-dock__glow {
  opacity: 0;
}

.music-dock__head {
  grid-template-columns: 94px minmax(0, 1fr) auto 30px;
  gap: 8px;
  min-height: 46px;
  opacity: 1;
  transition: opacity 120ms ease;
}

.music-dock.is-collapsing .music-dock__head,
.music-dock.is-expanding .music-dock__head,
.music-dock.is-edge-transitioning .music-dock__head {
  opacity: 0;
}

.music-transport {
  grid-template-columns: 24px 46px 24px;
  gap: 0;
  overflow: visible;
}

.music-skip {
  width: 24px;
  height: 30px;
  border-radius: 8px;
  color: rgba(219,225,245,0.62);
}

.music-skip:hover {
  color: #fff;
  background: rgba(255,255,255,0.075);
  transform: scale(1.06);
}

.music-skip svg { width: 14px; height: 14px; }

.music-play {
  width: 46px;
  height: 46px;
  background: conic-gradient(from 210deg, var(--music-accent), var(--music-cyan), #bc7cff, var(--music-accent));
  box-shadow: 0 10px 26px rgba(77,88,255,0.38), inset 0 1px rgba(255,255,255,0.42);
}

.music-play::before {
  inset: 4px;
  background: rgba(10,12,24,0.76);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.1);
}

.music-play:hover {
  transform: scale(1.055);
  box-shadow: 0 13px 32px rgba(77,88,255,0.48), inset 0 1px rgba(255,255,255,0.5);
}

.music-play__icon { width: 19px; height: 19px; }

.music-dock__meta { gap: 2px; }

.music-dock__kicker {
  gap: 5px;
  color: rgba(202,210,239,0.66);
  font: 550 0.55rem/1.2 var(--font-mono);
  letter-spacing: 0.055em;
}

.music-live-dot { width: 5px; height: 5px; background: #7a87a9; }

.music-dock.is-playing .music-live-dot {
  box-shadow: 0 0 10px #5df0a4;
  animation: music-live 1.4s ease-in-out infinite;
}

@keyframes music-live {
  50% { opacity: 0.45; transform: scale(0.72); }
}

.music-dock__meta strong {
  color: #f7f8ff;
  font-size: 0.88rem;
  line-height: 1.25;
}

.music-actions {
  gap: 4px;
  max-width: 64px;
  overflow: visible;
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
  transition: opacity 150ms ease, transform 180ms var(--ease-out);
}

.music-queue-toggle,
.music-collapse,
.music-edge-toggle {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: rgba(255,255,255,0.055);
  color: rgba(220,225,245,0.7);
}

.music-queue-toggle:hover,
.music-collapse:hover { background: rgba(255,255,255,0.1); color: #fff; }
.music-edge-toggle { background: color-mix(in srgb, var(--music-cyan) 9%, rgba(255,255,255,0.055)); }
.music-queue-toggle svg,
.music-collapse svg,
.music-edge-toggle svg { width: 15px; height: 15px; }

.music-play:focus-visible,
.music-skip:focus-visible,
.music-queue-toggle:focus-visible,
.music-collapse:focus-visible,
.music-edge-toggle:focus-visible,
.music-mute:focus-visible,
.music-track:focus-visible {
  outline-offset: -2px;
}

.music-dock__details {
  max-height: 34px;
  margin-top: 8px;
  overflow: hidden;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity 160ms ease, transform 180ms var(--ease-out);
}

.music-dock.is-queue-open .music-dock__details {
  max-height: 186px;
  margin-top: 8px;
  opacity: 1;
}

.music-dock.is-expanding .music-dock__details,
.music-dock.is-queue-transitioning .music-playlist {
  opacity: 0;
}

.music-dock__details-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  min-height: 0;
  overflow: hidden;
}

.music-timeline {
  grid-template-columns: 32px minmax(0, 1fr) 32px;
  gap: 7px;
  min-height: 16px;
  margin-top: 0;
}

.music-time {
  color: rgba(214,220,242,0.72);
  font: 0.59rem/1 var(--font-mono);
}

.music-seek,
.music-volume { height: 16px; }

.music-seek::-webkit-slider-runnable-track {
  height: 4px;
  background: linear-gradient(90deg, var(--music-seek-active) 0 var(--seek), var(--music-seek-buffered) var(--seek) var(--buffered), var(--music-seek-rest) var(--buffered) 100%);
}

.music-seek::-moz-range-track {
  height: 4px;
  background: linear-gradient(90deg, var(--music-seek-active) 0 var(--seek), var(--music-seek-buffered) var(--seek) var(--buffered), var(--music-seek-rest) var(--buffered) 100%);
}

.music-seek::-webkit-slider-thumb,
.music-volume::-webkit-slider-thumb {
  width: 13px;
  height: 13px;
  margin-top: -4.5px;
  opacity: 1;
  transform: none;
}

.music-seek::-moz-range-thumb,
.music-volume::-moz-range-thumb {
  width: 10px;
  height: 10px;
}

.music-seek::-webkit-slider-thumb {
  background: var(--music-seek-thumb);
  box-shadow: 0 0 0 4px var(--music-seek-thumb-ring), 0 0 12px var(--music-seek-thumb-glow);
}

.music-seek::-moz-range-thumb {
  background: var(--music-seek-thumb);
  box-shadow: 0 0 0 4px var(--music-seek-thumb-ring), 0 0 12px var(--music-seek-thumb-glow);
}

.music-volume::-webkit-slider-runnable-track {
  background: linear-gradient(90deg, var(--music-volume-active) 0 var(--volume), var(--music-volume-rest) var(--volume) 100%);
}

.music-volume::-moz-range-track {
  background: linear-gradient(90deg, var(--music-volume-active) 0 var(--volume), var(--music-volume-rest) var(--volume) 100%);
}

.music-volume::-webkit-slider-thumb {
  background: var(--music-volume-thumb);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--music-volume-thumb) 13%, transparent), 0 0 10px color-mix(in srgb, var(--music-volume-thumb) 45%, transparent);
}

.music-volume::-moz-range-thumb {
  background: var(--music-volume-thumb);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--music-volume-thumb) 13%, transparent), 0 0 10px color-mix(in srgb, var(--music-volume-thumb) 45%, transparent);
}

.music-dock__foot {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  min-height: 25px;
  margin-top: 0;
  padding: 0;
}

.music-queue-toggle {
  display: grid;
  place-items: center;
  flex: none;
  width: 30px;
  height: 30px;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 9px;
  background: rgba(255,255,255,0.055);
  color: rgba(224,229,248,0.76);
}

.music-queue-toggle svg { width: 15px; height: 15px; }

.music-mute {
  width: 25px;
  height: 25px;
  border-radius: 7px;
  background: transparent;
  color: rgba(223,228,246,0.72);
}

.music-mute:hover { background: rgba(255,255,255,0.08); color: #fff; }
.music-mute svg { width: 16px; height: 16px; }

.music-volume-wrap {
  width: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition: width 180ms var(--ease-out), opacity 140ms ease;
}

.music-dock__foot:hover .music-volume-wrap,
.music-dock__foot:focus-within .music-volume-wrap {
  width: 54px;
  overflow: visible;
  opacity: 1;
  pointer-events: auto;
}

.music-dock.is-collapsed {
  width: min(230px, calc(100vw - 28px));
  filter: none;
}

.music-dock.is-collapsed .music-dock__glass {
  padding: 8px 9px;
}

.music-dock.is-collapsed .music-dock__glass::after {
  opacity: 0.82;
}

.music-dock.is-collapsed .music-dock__head {
  grid-template-columns: 44px minmax(0, 1fr) 0 30px;
  gap: 8px;
  min-height: 44px;
}

.music-dock.is-collapsed .music-transport { grid-template-columns: 0 44px 0; gap: 0; }
.music-dock.is-collapsed .music-play { width: 44px; height: 44px; }
.music-dock.is-collapsed .music-play__icon { width: 19px; height: 19px; }
.music-dock.is-collapsed .music-skip,
.music-dock.is-collapsed .music-actions {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(5px);
}
.music-dock.is-collapsed .music-skip { opacity: 0; visibility: hidden; pointer-events: none; }
.music-dock.is-collapsed .music-dock__details {
  max-height: 0;
  margin-top: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-4px);
}
.music-dock.is-collapsed .music-collapse { visibility: visible; }
.music-dock.is-collapsed .music-collapse svg { transform: rotate(180deg); }
.music-dock.is-collapsed .music-dock__meta { display: flex; }
.music-dock.is-collapsed .music-dock__kicker { font-size: 0.51rem; }
.music-dock.is-collapsed .music-dock__meta strong { font-size: 0.82rem; }

.music-dock.is-edge-docked {
  width: 64px;
  filter: none;
}

.music-dock.is-edge-docked.is-edge-left { border-radius: 0 20px 20px 0; }
.music-dock.is-edge-docked.is-edge-right { border-radius: 20px 0 0 20px; }
.music-dock.is-edge-docked .music-dock__glass { padding: 8px 7px; }
.music-dock.is-edge-docked .music-dock__glass::after { opacity: 0; }
.music-dock.is-edge-docked .music-dock__head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 0;
}
.music-dock.is-edge-docked .music-dock__meta,
.music-dock.is-edge-docked .music-collapse,
.music-dock.is-edge-docked .music-dock__details {
  max-width: 0;
  max-height: 0;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.music-dock.is-edge-docked .music-transport { grid-template-columns: 0 48px 0; gap: 0; }
.music-dock.is-edge-docked .music-skip { opacity: 0; visibility: hidden; pointer-events: none; }
.music-dock.is-edge-docked .music-play { width: 48px; height: 48px; }
.music-dock.is-edge-docked .music-actions {
  position: relative;
  width: 42px;
  max-width: 42px;
  height: 30px;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: none;
}
.music-dock.is-edge-docked .music-queue-toggle {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.music-dock.is-edge-docked .music-edge-toggle { width: 42px; height: 30px; }

[data-theme="light"] .music-dock {
  --music-focus: #4c5eea;
  --music-seek-active: #0b7890;
  --music-seek-buffered: rgba(55,72,112,0.72);
  --music-seek-rest: rgba(55,72,112,0.6);
  --music-seek-thumb: #0b7890;
  --music-seek-thumb-ring: rgba(11,120,144,0.16);
  --music-seek-thumb-glow: rgba(11,120,144,0.42);
  --music-volume-active: #4658dc;
  --music-volume-rest: rgba(55,72,112,0.6);
  --music-volume-thumb: #4658dc;
  color: #26345f;
}

[data-theme="light"] .music-dock__glass {
  background: linear-gradient(145deg, rgba(250,252,255,0.95), rgba(233,238,249,0.92));
  box-shadow: 0 16px 38px rgba(29,42,79,0.18), inset 0 1px rgba(255,255,255,0.92), inset 0 -1px rgba(44,60,102,0.06);
}

[data-theme="light"] .music-play::before {
  background: rgba(247,249,255,0.94);
  box-shadow: inset 0 0 0 1px rgba(45,60,102,0.12);
}
[data-theme="light"] .music-skip,
[data-theme="light"] .music-mute { color: #5b6788; }
[data-theme="light"] .music-skip:hover,
[data-theme="light"] .music-mute:hover {
  color: var(--text-1);
  background: rgba(35,45,75,0.08);
}
[data-theme="light"] .music-dock__meta strong { color: #182038; }
[data-theme="light"] .music-dock__kicker,
[data-theme="light"] .music-time { color: #5b6788; }
[data-theme="light"] .music-dock.is-buffering .music-dock__kicker { color: #0b7890; }
[data-theme="light"] .music-dock.is-resume-pending .music-dock__kicker { color: #7a5700; }
[data-theme="light"] .music-collapse,
[data-theme="light"] .music-edge-toggle,
[data-theme="light"] .music-queue-toggle { color: rgba(35,45,75,0.72); background-color: rgba(35,45,75,0.055); }
[data-theme="light"] .music-collapse:hover,
[data-theme="light"] .music-edge-toggle:hover,
[data-theme="light"] .music-queue-toggle:hover {
  color: var(--text-1);
  background-color: rgba(35,45,75,0.1);
}
[data-theme="light"] .music-track__index,
[data-theme="light"] .music-track__duration { color: #657293; }
[data-theme="light"] .music-track.is-active .music-track__index { color: #0b7890; }
[data-theme="light"] .music-track.is-active::before {
  background: #0b7890;
  box-shadow: 0 0 9px rgba(11,120,144,0.4);
}

@media (max-width: 920px) {
  .music-dock {
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    max-width: 420px;
  }
  .music-dock.is-collapsed { width: min(230px, calc(100vw - 24px)); }
  .music-dock.is-collapsed.is-edge-docked { width: 64px; }
  .main,
  .is-landing .main { padding-bottom: max(122px, calc(env(safe-area-inset-bottom) + 110px)); }
  .music-dock.is-collapsed ~ .fab,
  .fab { bottom: max(88px, calc(env(safe-area-inset-bottom) + 76px)); }
}

@media (max-width: 680px) {
  .music-dock__head {
    grid-template-columns: 94px minmax(0, 1fr) 30px 38px;
    cursor: default;
    touch-action: auto;
  }
  .music-actions { max-width: 30px; }
  .music-edge-toggle {
    width: 0;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
  .music-collapse { width: 38px; height: 38px; }
  .music-dock.is-collapsed { width: 104px; }
  .music-dock.is-collapsed .music-dock__head { grid-template-columns: 44px 32px; gap: 10px; justify-content: initial; }
  .music-dock.is-collapsed .music-transport { grid-column: 1; grid-row: 1; }
  .music-dock.is-collapsed:not(.is-edge-docked) .music-dock__meta,
  .music-dock.is-collapsed:not(.is-edge-docked) .music-actions {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
  .music-dock.is-collapsed .music-collapse { grid-column: 2; grid-row: 1; width: 32px; height: 32px; }
  .music-dock.is-edge-docked { width: 64px; }
  .music-dock.is-edge-docked .music-edge-toggle {
    width: 42px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}

@media (max-width: 480px) {
  .main,
  .is-landing .main { padding-bottom: max(152px, calc(env(safe-area-inset-bottom) + 140px)); }
  .music-dock { border-radius: 17px; }
  .music-dock__glass { padding: 10px; }
  .music-dock__head { grid-template-columns: 90px minmax(0, 1fr) 30px 36px; gap: 7px; }
  .music-transport { grid-template-columns: 24px 46px 24px; gap: 0; }
  .music-skip { width: 24px; }
  .music-play { width: 46px; height: 46px; }
  .music-dock__kicker { font-size: 0.51rem; }
  .music-dock__meta strong { font-size: 0.82rem; }
  .music-volume-wrap,
  .music-dock__foot:hover .music-volume-wrap,
  .music-dock__foot:focus-within .music-volume-wrap { width: 0; overflow: hidden; opacity: 0; visibility: hidden; pointer-events: none; }
  .music-dock.is-collapsed { width: 104px; }
  .music-dock.is-collapsed .music-dock__glass { padding: 8px 9px; }
}

.music-dock.is-edge-docked .music-dock__head {
  cursor: grab;
  touch-action: none;
}

.music-dock.is-edge-docked.is-dragging .music-dock__head {
  cursor: grabbing;
}

.music-dock.is-edge-dragging {
  will-change: transform;
}

.music-dock.is-edge-dragging .music-dock__glass {
  box-shadow: 0 22px 50px rgba(0,0,0,0.5), inset 0 1px rgba(255,255,255,0.1), inset 0 -1px rgba(255,255,255,0.04);
}

@media (prefers-reduced-motion: reduce) {
  .music-live-dot { animation: none !important; }
  .music-dock,
  .music-dock__head,
  .music-dock__details,
  .music-actions,
  .music-playlist,
  .music-dock__visualizer,
  .music-dock__glow { transition: none !important; }
}

/* ==========================================================================
   Water essay visual theme
   Scoped through `visual_theme: water` so other posts keep their own tone.
   ========================================================================== */
.article-theme-water {
  --water-cyan: #55e8ff;
  --water-blue: #5b7cff;
  --water-violet: #ad63ff;
  --water-peach: #ffc889;
  --water-cyan-ink: var(--water-cyan);
  --water-blue-ink: var(--water-blue);
  --water-violet-ink: var(--water-violet);
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-color: color-mix(in srgb, var(--water-cyan) 24%, var(--surface-border));
  background:
    radial-gradient(circle at 12% 2%, color-mix(in srgb, var(--water-cyan) 12%, transparent), transparent 24rem),
    radial-gradient(circle at 92% 8%, color-mix(in srgb, var(--water-violet) 10%, transparent), transparent 28rem),
    linear-gradient(155deg, color-mix(in srgb, var(--bg-2) 84%, transparent), var(--surface));
  box-shadow:
    0 32px 90px rgba(0, 0, 0, 0.38),
    0 0 0 1px color-mix(in srgb, var(--water-blue) 10%, transparent),
    0 0 70px color-mix(in srgb, var(--water-cyan) 8%, transparent);
}

.article-theme-water::before,
.article-theme-water::after {
  content: "";
  position: absolute;
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(2px);
}

.article-theme-water::before {
  top: -220px;
  right: -180px;
  width: 520px;
  height: 520px;
  border: 1px solid color-mix(in srgb, var(--water-cyan) 18%, transparent);
  box-shadow:
    inset 0 0 80px color-mix(in srgb, var(--water-blue) 12%, transparent),
    0 0 80px color-mix(in srgb, var(--water-cyan) 8%, transparent);
  animation: water-orbit 18s ease-in-out infinite alternate;
}

.article-theme-water::after {
  top: 360px;
  left: -210px;
  width: 430px;
  height: 430px;
  background: radial-gradient(circle, color-mix(in srgb, var(--water-violet) 9%, transparent), transparent 68%);
  animation: water-drift 15s ease-in-out infinite alternate;
}

.article-theme-water .article-header {
  position: relative;
  overflow: hidden;
  margin: 0 0 42px;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid color-mix(in srgb, var(--water-cyan) 22%, var(--surface-border));
  border-radius: 22px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--water-blue) 11%, transparent), transparent 52%),
    radial-gradient(circle at 88% 16%, color-mix(in srgb, var(--water-violet) 16%, transparent), transparent 34%),
    color-mix(in srgb, var(--bg-2) 76%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 22px 55px rgba(0, 0, 0, 0.26);
}

.article-theme-water .article-header::before {
  content: "BE WATER  ·  向内求索";
  display: inline-flex;
  align-items: center;
  margin-bottom: 14px;
  padding: 5px 10px;
  border: 1px solid color-mix(in srgb, var(--water-cyan) 35%, transparent);
  border-radius: 999px;
  color: color-mix(in srgb, var(--water-cyan-ink) 78%, var(--text-1));
  background: color-mix(in srgb, var(--water-cyan) 8%, transparent);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  box-shadow: 0 0 24px color-mix(in srgb, var(--water-cyan) 12%, transparent);
}

.article-theme-water .article-header::after {
  content: "";
  position: absolute;
  right: -52px;
  bottom: -94px;
  width: 270px;
  height: 170px;
  border: 1px solid color-mix(in srgb, var(--water-cyan) 20%, transparent);
  border-radius: 50%;
  box-shadow:
    0 -24px 0 -23px color-mix(in srgb, var(--water-violet) 25%, transparent),
    0 -48px 0 -47px color-mix(in srgb, var(--water-blue) 28%, transparent);
  transform: rotate(-8deg);
  opacity: 0.72;
}

.article-theme-water .article-header h1 {
  position: relative;
  z-index: 1;
  margin-bottom: 18px;
  background: linear-gradient(105deg, #f9fdff 0%, var(--water-cyan) 30%, #d7d9ff 52%, var(--water-violet) 74%, #f9fdff 100%);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 8px 28px color-mix(in srgb, var(--water-blue) 26%, transparent));
  animation: water-title-flow 8s linear infinite;
}

.article-theme-water .post-meta {
  position: relative;
  z-index: 1;
}

.article-theme-water .post-meta > * {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.article-theme-water .toc {
  max-width: 46rem;
  margin: 0 auto 38px;
  padding: 14px 16px;
  border-color: color-mix(in srgb, var(--water-cyan) 22%, var(--surface-border));
  background:
    linear-gradient(120deg, color-mix(in srgb, var(--water-blue) 8%, transparent), color-mix(in srgb, var(--water-violet) 5%, transparent)),
    var(--surface);
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.18);
}

.article-theme-water .toc-title {
  margin-bottom: 10px;
}

.article-theme-water .toc-list {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 8px;
}

.article-theme-water .toc-list a {
  padding: 7px 11px;
  border-color: color-mix(in srgb, var(--water-blue) 12%, transparent);
  background: color-mix(in srgb, var(--water-blue) 5%, transparent);
}

.article-theme-water .article-content {
  --prose-w: min(100%, 46rem);
  font-size: 1.075rem;
  line-height: 1.92;
}

.article-theme-water .article-content p {
  margin-bottom: 1.22em;
  text-align: left;
  text-justify: auto;
}

.article-theme-water .article-content > .water-opening {
  position: relative;
  margin: 0 0 1.7em;
  padding: 22px 24px 22px 28px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--water-cyan) 20%, var(--surface-border));
  border-left: 3px solid color-mix(in srgb, var(--water-cyan) 78%, var(--water-blue));
  border-radius: 0 16px 16px 0;
  color: color-mix(in srgb, var(--text-1) 94%, var(--water-cyan));
  background:
    linear-gradient(105deg, color-mix(in srgb, var(--water-cyan) 9%, transparent), transparent 44%),
    color-mix(in srgb, var(--bg-2) 72%, transparent);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.05);
  font-size: clamp(1.08rem, 1.5vw, 1.2rem);
  line-height: 1.85;
  text-wrap: pretty;
}

.article-theme-water .article-content > .water-opening::before {
  content: "从抖音里的一句话开始";
  display: block;
  margin-bottom: 9px;
  color: color-mix(in srgb, var(--water-cyan-ink) 76%, var(--text-2));
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.article-theme-water .article-content > .water-opening::after {
  content: "";
  position: absolute;
  right: -34px;
  bottom: -52px;
  width: 130px;
  height: 90px;
  border: 1px solid color-mix(in srgb, var(--water-violet) 18%, transparent);
  border-radius: 50%;
  pointer-events: none;
}

.article-theme-water .article-content > .water-opening::first-letter {
  float: none;
  margin: 0;
  padding: 0;
  background: none;
  color: inherit;
  font: inherit;
  line-height: inherit;
  -webkit-text-fill-color: currentColor;
  filter: none;
}

.article-theme-water .article-content h2 {
  margin-top: 3em;
}

.article-theme-water .article-content blockquote {
  margin: 2.2em 0;
}

.article-theme-water .article-content > p:first-of-type strong {
  color: transparent;
  background: linear-gradient(100deg, var(--water-cyan-ink), var(--text-1) 46%, var(--water-violet-ink));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 3px 12px color-mix(in srgb, var(--water-cyan) 28%, transparent));
}

.article-theme-water .article-content h2 {
  border-bottom-color: transparent;
  background: linear-gradient(90deg, var(--text-1), color-mix(in srgb, var(--water-cyan-ink) 72%, var(--text-1)) 68%, var(--water-violet-ink));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.article-theme-water .article-content h2::before {
  width: 17px;
  height: 17px;
  border-radius: 68% 32% 70% 30%;
  background: linear-gradient(145deg, #dffbff, var(--water-cyan) 35%, var(--water-blue) 72%, var(--water-violet));
  box-shadow:
    inset 2px 2px 4px rgba(255, 255, 255, 0.45),
    0 7px 20px color-mix(in srgb, var(--water-cyan) 42%, transparent);
  transform: translateY(-1px) rotate(45deg);
}

.article-theme-water .article-content h2::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--water-cyan) 18%, var(--water-blue) 55%, var(--water-violet) 82%, transparent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--water-cyan) 36%, transparent);
}

.article-theme-water .article-content h3::before {
  width: 3px;
  background: linear-gradient(180deg, var(--water-cyan), var(--water-blue), var(--water-violet));
  box-shadow: 0 0 13px color-mix(in srgb, var(--water-cyan) 46%, transparent);
}

.article-theme-water .article-content blockquote {
  overflow: hidden;
  padding: clamp(22px, 4vw, 34px) clamp(22px, 5vw, 42px) clamp(22px, 4vw, 32px) clamp(58px, 8vw, 78px);
  border-color: color-mix(in srgb, var(--water-cyan) 34%, transparent);
  background:
    radial-gradient(circle at 12% 14%, color-mix(in srgb, var(--water-cyan) 15%, transparent), transparent 38%),
    linear-gradient(135deg, color-mix(in srgb, var(--water-blue) 13%, transparent), color-mix(in srgb, var(--water-violet) 9%, transparent));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 18px 48px rgba(0, 0, 0, 0.22),
    0 0 32px color-mix(in srgb, var(--water-cyan) 8%, transparent);
  font-family: "Georgia", "Source Han Serif SC", serif;
  font-size: 1.08em;
  line-height: 1.82;
}

.article-theme-water .article-content blockquote::before {
  z-index: 2;
  left: 18px;
  top: 13px;
  color: var(--water-cyan-ink);
  text-shadow: 0 0 22px color-mix(in srgb, var(--water-cyan) 55%, transparent);
}

.article-theme-water .article-content blockquote::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: -80% -40%;
  background: linear-gradient(105deg, transparent 38%, rgba(255, 255, 255, 0.09) 48%, transparent 58%);
  transform: translateX(-52%) rotate(8deg);
  animation: water-quote-sheen 7.5s ease-in-out infinite;
  pointer-events: none;
}

.article-theme-water .article-content blockquote > * {
  position: relative;
  z-index: 1;
}

.article-theme-water .post-video {
  position: relative;
  margin-top: 3em;
}

.article-theme-water .post-video::before {
  content: "ORIGINAL INTERVIEW  ·  1971";
  position: absolute;
  z-index: 3;
  top: -13px;
  left: 18px;
  padding: 5px 10px;
  border: 1px solid color-mix(in srgb, var(--water-cyan) 50%, transparent);
  border-radius: 999px;
  color: #ecfdff;
  background: color-mix(in srgb, #07131f 90%, transparent);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  box-shadow: 0 0 22px color-mix(in srgb, var(--water-cyan) 22%, transparent);
}

.article-theme-water .post-video-frame {
  position: relative;
  padding: 3px;
  border: 0;
  border-radius: 18px;
  background: linear-gradient(125deg, var(--water-cyan), var(--water-blue) 44%, var(--water-violet) 72%, var(--water-peach));
  box-shadow:
    0 28px 72px rgba(0, 0, 0, 0.42),
    0 0 42px color-mix(in srgb, var(--water-blue) 20%, transparent);
}

.article-theme-water .post-video-frame::after {
  content: "";
  position: absolute;
  inset: 3px;
  z-index: 2;
  border-radius: 15px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 17%, transparent 83%, rgba(85, 232, 255, 0.06));
  pointer-events: none;
}

.article-theme-water .post-video-frame iframe {
  position: relative;
  z-index: 1;
  border-radius: 15px;
  background: #05070b;
}

.article-theme-water .post-video figcaption {
  color: color-mix(in srgb, var(--text-3) 86%, var(--water-cyan));
}

.article-theme-water .post-figure {
  position: relative;
  isolation: isolate;
}

.article-theme-water .post-figure::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 8% -5% 4%;
  border-radius: 30%;
  background:
    radial-gradient(circle at 20% 24%, rgba(255, 151, 194, 0.34), transparent 42%),
    radial-gradient(circle at 82% 20%, rgba(199, 166, 255, 0.3), transparent 43%),
    radial-gradient(circle at 52% 82%, rgba(255, 205, 173, 0.24), transparent 48%);
  filter: blur(30px);
  opacity: 0.78;
  pointer-events: none;
}

.article-theme-water .post-figure::before {
  content: "FOUR YEARS TOGETHER";
  position: absolute;
  z-index: 2;
  top: -11px;
  right: 18px;
  padding: 5px 10px;
  border: 1px solid rgba(255, 155, 196, 0.48);
  border-radius: 999px;
  color: #9a4d6b;
  background: linear-gradient(135deg, rgba(255, 250, 253, 0.96), rgba(255, 226, 240, 0.94) 58%, rgba(241, 231, 255, 0.95));
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  box-shadow:
    0 8px 24px rgba(154, 75, 111, 0.16),
    0 0 22px rgba(228, 142, 255, 0.14);
}

.article-theme-water .post-figure img {
  border-color: rgba(255, 173, 209, 0.5);
  background:
    linear-gradient(var(--bg-2), var(--bg-2)) padding-box,
    linear-gradient(135deg, #fff8fc, #ff9fc6 28%, #c9b0ff 58%, #ffc5a8 82%, #fff9fd) border-box;
  box-shadow:
    0 28px 72px rgba(0, 0, 0, 0.3),
    0 0 46px rgba(255, 130, 184, 0.18),
    0 0 0 1px rgba(255, 224, 242, 0.2);
}

.article-theme-water .post-figure--cat-portrait .post-cat-portrait {
  border-color: rgba(255, 190, 218, 0.46);
}

.article-theme-water .article-footer a {
  border-color: color-mix(in srgb, var(--water-cyan) 18%, var(--surface-border));
  background: linear-gradient(135deg, color-mix(in srgb, var(--water-blue) 7%, transparent), color-mix(in srgb, var(--water-violet) 5%, transparent));
}

.article-theme-water .water-reveal {
  transition:
    opacity 680ms var(--ease-out),
    transform 760ms var(--ease-out),
    filter 680ms var(--ease-out);
}

.article-theme-water .water-reveal:not(.is-in) {
  transform: translateY(24px) scale(0.985);
  filter: blur(5px);
}

.article-theme-water .water-reveal.is-in {
  filter: blur(0);
}

[data-theme="light"] .article-theme-water {
  --water-cyan-ink: #08728a;
  --water-blue-ink: #4658dc;
  --water-violet-ink: #7142dc;
  background:
    radial-gradient(circle at 12% 2%, rgba(84, 210, 238, 0.16), transparent 25rem),
    radial-gradient(circle at 92% 8%, rgba(157, 111, 232, 0.11), transparent 28rem),
    linear-gradient(155deg, rgba(247, 252, 255, 0.94), rgba(250, 247, 255, 0.92));
  box-shadow:
    0 28px 76px rgba(40, 74, 110, 0.15),
    0 0 0 1px rgba(72, 167, 211, 0.1),
    0 0 56px rgba(80, 197, 230, 0.08);
}

[data-theme="light"] .article-theme-water .article-header {
  background:
    linear-gradient(135deg, rgba(95, 170, 255, 0.12), transparent 52%),
    radial-gradient(circle at 88% 16%, rgba(167, 102, 239, 0.12), transparent 34%),
    rgba(255, 255, 255, 0.76);
  box-shadow: 0 18px 46px rgba(53, 99, 145, 0.13);
}

[data-theme="light"] .article-theme-water .article-header h1 {
  background-image: linear-gradient(105deg, #16304a 0%, #137fa3 30%, #3b52a3 58%, #8b3db9 78%, #16304a 100%);
}

@keyframes water-title-flow {
  to { background-position: 220% center; }
}

@keyframes water-orbit {
  from { transform: translate3d(0, 0, 0) rotate(0deg); }
  to { transform: translate3d(-24px, 38px, 0) rotate(12deg); }
}

@keyframes water-drift {
  from { transform: translate3d(0, 0, 0) scale(0.96); }
  to { transform: translate3d(52px, 84px, 0) scale(1.08); }
}

@keyframes water-quote-sheen {
  0%, 26% { transform: translateX(-54%) rotate(8deg); opacity: 0; }
  42% { opacity: 1; }
  68%, 100% { transform: translateX(54%) rotate(8deg); opacity: 0; }
}

@media (max-width: 680px) {
  .article-theme-water {
    padding: 16px 13px 26px;
    border-radius: 22px;
  }
  .article-theme-water .article-header {
    margin-bottom: 30px;
    padding: 22px 18px;
    border-radius: 17px;
  }
  .article-theme-water .article-header::before {
    margin-bottom: 12px;
    font-size: 0.59rem;
    letter-spacing: 0.12em;
  }
  .article-theme-water .article-header::after {
    right: -110px;
    bottom: -112px;
  }
  .article-theme-water .article-content blockquote {
    padding: 20px 18px 20px 48px;
    font-size: 1em;
  }
  .article-theme-water .article-content blockquote::before {
    left: 12px;
    top: 12px;
  }
  .article-theme-water .toc {
    margin-bottom: 26px;
    padding: 4px 14px;
  }
  .article-theme-water .toc:not([data-collapsed="true"]) {
    padding-top: 12px;
    padding-bottom: 14px;
  }
  .article-theme-water .toc-list {
    flex-direction: column;
    gap: 3px;
  }
  .article-theme-water .article-content {
    font-size: 1rem;
    line-height: 1.84;
  }
  .article-theme-water .article-content > .water-opening {
    margin-bottom: 1.45em;
    padding: 18px 16px 18px 19px;
    border-radius: 0 13px 13px 0;
    font-size: 1.03rem;
    line-height: 1.78;
  }
  .article-theme-water .article-content h2 {
    margin-top: 2.35em;
  }
  .article-theme-water .post-video::before,
  .article-theme-water .post-figure::before {
    left: 12px;
    right: auto;
    max-width: calc(100% - 24px);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .article-theme-water .post-video-frame {
    padding: 2px;
    border-radius: 14px;
  }
  .article-theme-water .post-video-frame iframe,
  .article-theme-water .post-video-frame::after {
    border-radius: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-theme-water::before,
  .article-theme-water::after,
  .article-theme-water .article-header h1,
  .article-theme-water .article-content blockquote::after {
    animation: none !important;
  }
  .article-theme-water .water-reveal:not(.is-in) {
    filter: none;
  }
}

/* ==========================================================================
   Engineering reflection essay
   Evidence-first visual rhythm, scoped to `visual_theme: reflection`.
   ========================================================================== */
.article-theme-reflection {
  --reflection-cyan: #64ddf4;
  --reflection-blue: #7187ff;
  --reflection-amber: #f4ba63;
  --reflection-cyan-ink: var(--reflection-cyan);
  --reflection-blue-ink: #aeb9ff;
  --reflection-amber-ink: var(--reflection-amber);
  --reflection-ink: color-mix(in srgb, var(--text-1) 92%, var(--reflection-cyan));
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-color: color-mix(in srgb, var(--reflection-blue) 20%, var(--surface-border));
  background:
    radial-gradient(circle at 86% 2%, color-mix(in srgb, var(--reflection-blue) 10%, transparent), transparent 26rem),
    radial-gradient(circle at 8% 42%, color-mix(in srgb, var(--reflection-cyan) 6%, transparent), transparent 24rem),
    linear-gradient(160deg, color-mix(in srgb, var(--bg-2) 88%, transparent), var(--surface));
  box-shadow:
    0 30px 84px rgba(0, 0, 0, 0.34),
    0 0 0 1px color-mix(in srgb, var(--reflection-blue) 7%, transparent);
}

.article-theme-reflection::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(color-mix(in srgb, var(--reflection-cyan) 3%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--reflection-blue) 3%, transparent) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.66), transparent 72%);
  opacity: 0.72;
}

.article-theme-reflection .article-header {
  position: relative;
  overflow: hidden;
  margin: 0 0 38px;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid color-mix(in srgb, var(--reflection-blue) 20%, var(--surface-border));
  border-radius: 20px;
  background:
    linear-gradient(125deg, color-mix(in srgb, var(--reflection-blue) 10%, transparent), transparent 52%),
    radial-gradient(circle at 88% 22%, color-mix(in srgb, var(--reflection-cyan) 10%, transparent), transparent 34%),
    color-mix(in srgb, var(--bg-2) 78%, transparent);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.06), 0 20px 48px rgba(0, 0, 0, 0.2);
}

.article-theme-reflection .article-header::before {
  content: "2026  ·  工作随笔";
  display: inline-flex;
  margin-bottom: 13px;
  padding: 5px 9px;
  border: 1px solid color-mix(in srgb, var(--reflection-cyan) 28%, transparent);
  border-radius: 999px;
  color: color-mix(in srgb, var(--reflection-cyan-ink) 82%, var(--text-1));
  background: color-mix(in srgb, var(--reflection-cyan) 7%, transparent);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.article-theme-reflection .article-header::after {
  content: "";
  position: absolute;
  right: -54px;
  bottom: -88px;
  width: 238px;
  height: 160px;
  border: 1px solid color-mix(in srgb, var(--reflection-cyan) 17%, transparent);
  border-radius: 50%;
  box-shadow:
    0 -24px 0 -23px color-mix(in srgb, var(--reflection-blue) 22%, transparent),
    0 -48px 0 -47px color-mix(in srgb, var(--reflection-amber) 18%, transparent);
  transform: rotate(-8deg);
  pointer-events: none;
}

.article-theme-reflection .article-header h1,
.article-theme-reflection .post-meta {
  position: relative;
  z-index: 1;
}

.article-theme-reflection .article-header h1 {
  background-image: linear-gradient(105deg, var(--text-1), var(--reflection-cyan-ink) 46%, var(--reflection-blue-ink) 76%, var(--text-1));
}

.article-theme-reflection .toc {
  max-width: 48rem;
  margin: 0 auto 34px;
  border-color: color-mix(in srgb, var(--reflection-blue) 18%, var(--surface-border));
  background: linear-gradient(120deg, color-mix(in srgb, var(--reflection-blue) 6%, transparent), transparent), var(--surface);
}

.article-theme-reflection .article-content {
  --prose-w: min(100%, 48rem);
  font-size: 1.065rem;
  line-height: 1.94;
}

.article-theme-reflection .article-content p {
  margin-bottom: 1.24em;
  text-align: left;
  text-justify: auto;
}

.article-theme-reflection .article-content h2 {
  margin-top: 2.8em;
  border-bottom-color: color-mix(in srgb, var(--reflection-blue) 15%, var(--hairline));
}

.article-theme-reflection .article-content h2::before {
  border-radius: 4px;
  background: linear-gradient(145deg, var(--reflection-cyan), var(--reflection-blue) 62%, var(--reflection-amber));
  box-shadow: 0 6px 18px color-mix(in srgb, var(--reflection-blue) 32%, transparent);
}

.article-theme-reflection .article-content strong {
  background: linear-gradient(180deg, transparent 64%, color-mix(in srgb, var(--reflection-cyan) 16%, transparent) 64%);
}

.article-theme-reflection .reflection-evidence {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(290px, 0.92fr);
  align-items: stretch;
  gap: 16px;
  margin: 2em 0 2.45em;
}

.article-theme-reflection .reflection-evidence > * {
  min-width: 0;
}

.article-theme-reflection .reflection-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--reflection-blue) 20%, var(--surface-border));
  border-radius: 18px;
  background: color-mix(in srgb, var(--bg-2) 82%, transparent);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.2);
}

.article-theme-reflection .reflection-figure img {
  display: block;
  width: 100%;
  max-width: none;
  margin: 0;
  transition: transform 700ms var(--ease-out), filter 700ms var(--ease-out);
}

.article-theme-reflection .reflection-figure figcaption {
  color: var(--text-2);
  text-align: left;
}

.article-theme-reflection .reflection-figure figcaption span {
  color: color-mix(in srgb, var(--reflection-cyan-ink) 78%, var(--text-1));
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.article-theme-reflection .reflection-figure figcaption p {
  margin: 7px 0 0;
  color: inherit;
  font-size: 0.88rem;
  line-height: 1.65;
}

.article-theme-reflection .reflection-figure--facts {
  position: relative;
  min-height: 100%;
}

.article-theme-reflection .reflection-figure--facts::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 48%, rgba(3, 10, 25, 0.9));
  pointer-events: none;
}

.article-theme-reflection .reflection-figure--facts img {
  height: 100%;
  min-height: 370px;
  object-fit: cover;
}

.article-theme-reflection .reflection-figure--facts figcaption {
  position: absolute;
  z-index: 1;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 28px 24px 22px;
  color: rgba(238, 246, 255, 0.88);
}

.article-theme-reflection .reflection-figure--facts figcaption span {
  color: #84e8f2;
}

.article-theme-reflection .reflection-figure--absence {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(220px, 0.62fr);
  margin: 2.2em 0 2.6em;
}

.article-theme-reflection .reflection-figure--absence img {
  height: 100%;
  min-height: 270px;
  object-fit: cover;
}

.article-theme-reflection .reflection-figure--absence figcaption {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(22px, 3.4vw, 32px);
  border-left: 1px solid color-mix(in srgb, var(--reflection-blue) 17%, var(--surface-border));
  background:
    radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--reflection-amber) 10%, transparent), transparent 48%),
    linear-gradient(145deg, color-mix(in srgb, var(--reflection-blue) 7%, transparent), color-mix(in srgb, var(--bg-2) 88%, transparent));
}

.article-theme-reflection .reflection-figure--absence figcaption::before {
  content: "";
  width: 34px;
  height: 2px;
  margin-bottom: 17px;
  background: linear-gradient(90deg, var(--reflection-amber), transparent);
}

.article-theme-reflection .reflection-figure--absence figcaption span {
  color: var(--reflection-amber-ink);
}

.article-theme-reflection .reflection-figure--water {
  position: relative;
  margin: 2.2em 0 2.55em;
  border-color: color-mix(in srgb, var(--reflection-cyan) 25%, var(--surface-border));
}

.article-theme-reflection .reflection-figure--water::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(3, 10, 23, 0.86), rgba(3, 10, 23, 0.16) 62%, transparent);
  pointer-events: none;
}

.article-theme-reflection .reflection-figure--water img {
  height: clamp(235px, 34vw, 310px);
  object-fit: cover;
}

.article-theme-reflection .reflection-figure--water figcaption {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: clamp(20px, 4vw, 38px);
  display: flex;
  flex-direction: column;
  gap: 5px;
  color: rgba(239, 248, 255, 0.92);
  transform: translateY(-50%);
}

.article-theme-reflection .reflection-figure--water figcaption strong {
  padding: 0;
  color: #fff;
  background: none;
  font-size: clamp(1.18rem, 2.7vw, 1.65rem);
  letter-spacing: 0.02em;
}

.article-theme-reflection .reflection-figure--water figcaption span {
  color: #87eaf2;
  font-size: 0.72rem;
}

.article-theme-reflection .reflection-output {
  position: relative;
  margin: 2em 0 2.35em;
  padding: clamp(20px, 3.4vw, 28px);
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--reflection-blue) 23%, var(--surface-border));
  border-radius: 18px;
  background:
    radial-gradient(circle at 96% 0%, color-mix(in srgb, var(--reflection-cyan) 10%, transparent), transparent 42%),
    linear-gradient(135deg, color-mix(in srgb, var(--reflection-blue) 8%, transparent), color-mix(in srgb, var(--bg-2) 76%, transparent));
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.06), 0 18px 42px rgba(0, 0, 0, 0.2);
}

.article-theme-reflection .reflection-evidence .reflection-output {
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin: 0;
}

.article-theme-reflection .reflection-output::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--reflection-cyan), var(--reflection-blue));
  box-shadow: 0 0 18px color-mix(in srgb, var(--reflection-cyan) 35%, transparent);
}

.article-theme-reflection .reflection-output figcaption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin: 0 0 22px;
  color: var(--reflection-ink);
  text-align: left;
}

.article-theme-reflection .reflection-output figcaption span {
  font-size: 1.04rem;
  font-weight: 750;
}

.article-theme-reflection .reflection-output figcaption small {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
}

.article-theme-reflection .reflection-output__rows {
  display: grid;
  gap: 18px;
}

.article-theme-reflection .reflection-output__row {
  display: grid;
  grid-template-columns: minmax(116px, 0.32fr) 1fr;
  align-items: center;
  gap: 18px;
}

.article-theme-reflection .reflection-output__label {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.article-theme-reflection .reflection-output__label span {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
}

.article-theme-reflection .reflection-output__label strong {
  padding: 0;
  color: var(--text-1);
  background: none;
  font-family: var(--font-mono);
  font-size: clamp(1.18rem, 2.5vw, 1.5rem);
  font-variant-numeric: tabular-nums;
}

.article-theme-reflection .reflection-output__track {
  height: 16px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--reflection-blue) 16%, var(--hairline));
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-3) 72%, transparent);
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.18);
}

.article-theme-reflection .reflection-output__fill {
  display: block;
  width: var(--bar-size);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--reflection-blue), var(--reflection-cyan));
  box-shadow: 0 0 18px color-mix(in srgb, var(--reflection-cyan) 34%, transparent);
  transform: scaleX(1);
  transform-origin: left center;
  transition: transform 900ms var(--ease-out);
}

.article-theme-reflection .reflection-output.reveal:not(.is-in) .reflection-output__fill {
  transform: scaleX(0);
}

.article-theme-reflection .reflection-output__note {
  margin: 20px 0 0;
  padding-top: 15px;
  border-top: 1px dashed color-mix(in srgb, var(--reflection-blue) 16%, var(--hairline));
  color: var(--text-3);
  font-size: 0.84rem;
  line-height: 1.65;
}

.article-theme-reflection .reflection-timeline {
  margin: 2.35em 0 2.5em;
  padding: clamp(20px, 3vw, 26px);
  border: 1px solid color-mix(in srgb, var(--reflection-blue) 18%, var(--surface-border));
  border-radius: 18px;
  background: linear-gradient(140deg, color-mix(in srgb, var(--reflection-blue) 6%, transparent), color-mix(in srgb, var(--bg-2) 72%, transparent));
}

.article-theme-reflection .reflection-component-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}

.article-theme-reflection .reflection-component-title span {
  padding: 4px 8px;
  border: 1px solid color-mix(in srgb, var(--reflection-cyan) 24%, transparent);
  border-radius: 999px;
  color: color-mix(in srgb, var(--reflection-cyan-ink) 78%, var(--text-1));
  background: color-mix(in srgb, var(--reflection-cyan) 6%, transparent);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
}

.article-theme-reflection .reflection-component-title strong {
  padding: 0;
  color: var(--text-1);
  background: none;
  font-size: 0.98rem;
}

.article-theme-reflection .reflection-timeline ol {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.article-theme-reflection .reflection-timeline ol::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 7px;
  right: 7px;
  height: 1px;
  background: linear-gradient(90deg, var(--reflection-cyan), var(--reflection-blue), var(--reflection-amber));
  transform: scaleX(1);
  transform-origin: left center;
  transition: transform 850ms var(--ease-out);
}

.article-theme-reflection .reflection-timeline.reveal:not(.is-in) ol::before {
  transform: scaleX(0);
}

.article-theme-reflection .reflection-timeline li {
  position: relative;
  min-width: 0;
  padding-top: 26px;
  color: var(--text-3);
  font-size: 0.78rem;
  line-height: 1.55;
}

.article-theme-reflection .reflection-timeline li::before {
  content: "";
  position: absolute;
  z-index: 1;
  top: 1px;
  left: 1px;
  width: 13px;
  height: 13px;
  border: 3px solid color-mix(in srgb, var(--bg-2) 86%, transparent);
  border-radius: 50%;
  background: var(--reflection-cyan);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--reflection-cyan) 42%, transparent), 0 0 16px color-mix(in srgb, var(--reflection-cyan) 30%, transparent);
}

.article-theme-reflection .reflection-timeline li:nth-child(3)::before,
.article-theme-reflection .reflection-timeline li:nth-child(5)::before {
  background: var(--reflection-amber);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--reflection-amber) 42%, transparent), 0 0 16px color-mix(in srgb, var(--reflection-amber) 24%, transparent);
}

.article-theme-reflection .reflection-timeline time {
  display: block;
  margin-bottom: 5px;
  color: var(--text-1);
  font-family: var(--font-mono);
  font-size: 0.69rem;
  font-weight: 700;
}

.article-theme-reflection .reflection-stance {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 2em 0 2.35em;
}

.article-theme-reflection .reflection-stance__item {
  position: relative;
  min-width: 0;
  padding: 20px 20px 18px;
  overflow: hidden;
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--bg-2) 74%, transparent);
  transition: border-color var(--t-base) var(--ease-out), background var(--t-base) var(--ease-out), transform var(--t-base) var(--ease-out);
}

.article-theme-reflection .reflection-stance__item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--reflection-cyan);
}

.article-theme-reflection .reflection-stance__item--refuse::before {
  background: var(--reflection-amber);
}

.article-theme-reflection .reflection-stance__item > span {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--reflection-cyan-ink);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.article-theme-reflection .reflection-stance__item--refuse > span {
  color: var(--reflection-amber-ink);
}

.article-theme-reflection .reflection-stance__item p {
  margin: 0;
  color: var(--text-2);
  font-size: 0.93rem;
  line-height: 1.72;
}

.article-theme-reflection .reflection-ending {
  position: relative;
  margin-top: 2.1em;
  padding: 22px 24px 22px 28px;
  border: 1px solid color-mix(in srgb, var(--reflection-cyan) 20%, var(--surface-border));
  border-left: 3px solid var(--reflection-cyan);
  border-radius: 0 16px 16px 0;
  color: color-mix(in srgb, var(--text-1) 94%, var(--reflection-cyan));
  background: linear-gradient(110deg, color-mix(in srgb, var(--reflection-cyan) 8%, transparent), color-mix(in srgb, var(--reflection-blue) 5%, transparent));
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.05);
}

.article-theme-reflection .reflection-ending::before {
  content: "接下来";
  display: block;
  margin-bottom: 8px;
  color: color-mix(in srgb, var(--reflection-cyan-ink) 76%, var(--text-2));
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.article-theme-reflection .reflection-ending::first-letter {
  float: none;
  margin: 0;
  padding: 0;
  background: none;
  color: inherit;
  font: inherit;
  line-height: inherit;
  -webkit-text-fill-color: currentColor;
  filter: none;
}

@media (hover: hover) {
  .article-theme-reflection .reflection-figure:hover img {
    filter: saturate(1.05) contrast(1.02);
    transform: scale(1.018);
  }

  .article-theme-reflection .reflection-stance__item:hover {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--reflection-blue) 32%, var(--surface-border));
    background: color-mix(in srgb, var(--reflection-blue) 7%, var(--bg-2));
  }
}

[data-theme="light"] .article-theme-reflection {
  --reflection-cyan-ink: #08728a;
  --reflection-blue-ink: #4658dc;
  --reflection-amber-ink: #7a5700;
  background:
    radial-gradient(circle at 86% 2%, rgba(105, 128, 240, 0.12), transparent 26rem),
    radial-gradient(circle at 8% 42%, rgba(50, 183, 210, 0.08), transparent 24rem),
    linear-gradient(160deg, rgba(248, 251, 255, 0.96), rgba(245, 247, 253, 0.92));
  box-shadow: 0 28px 72px rgba(45, 62, 104, 0.13), 0 0 0 1px rgba(81, 104, 176, 0.08);
}

[data-theme="light"] .article-theme-reflection .article-header,
[data-theme="light"] .article-theme-reflection .reflection-output,
[data-theme="light"] .article-theme-reflection .reflection-timeline,
[data-theme="light"] .article-theme-reflection .reflection-figure,
[data-theme="light"] .article-theme-reflection .reflection-stance__item {
  background-color: rgba(255, 255, 255, 0.76);
  box-shadow: 0 16px 38px rgba(54, 74, 122, 0.1);
}

@media (max-width: 680px) {
  .article-theme-reflection {
    padding: 16px 13px 26px;
    border-radius: 22px;
  }

  .article-theme-reflection .article-header {
    margin-bottom: 28px;
    padding: 22px 18px;
    border-radius: 17px;
  }

  .article-theme-reflection .article-header::before {
    font-size: 0.56rem;
    letter-spacing: 0.1em;
  }

  .article-theme-reflection .article-header::after {
    right: -110px;
  }

  .article-theme-reflection .toc {
    margin-bottom: 26px;
  }

  .article-theme-reflection .article-content {
    font-size: 1rem;
    line-height: 1.86;
  }

  .article-theme-reflection .article-content h2 {
    margin-top: 2.35em;
  }

  .article-theme-reflection .reflection-evidence {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .article-theme-reflection .reflection-figure,
  .article-theme-reflection .reflection-output {
    border-radius: 15px;
  }

  .article-theme-reflection .reflection-figure--facts img {
    min-height: 225px;
  }

  .article-theme-reflection .reflection-figure--facts figcaption {
    padding: 28px 18px 17px;
  }

  .article-theme-reflection .reflection-figure--absence {
    grid-template-columns: 1fr;
  }

  .article-theme-reflection .reflection-figure--absence img {
    min-height: 0;
    height: auto;
  }

  .article-theme-reflection .reflection-figure--absence figcaption {
    padding: 19px 18px 20px;
    border-top: 1px solid color-mix(in srgb, var(--reflection-blue) 17%, var(--surface-border));
    border-left: 0;
  }

  .article-theme-reflection .reflection-figure--absence figcaption::before {
    margin-bottom: 13px;
  }

  .article-theme-reflection .reflection-figure--water img {
    height: 228px;
    object-position: 58% center;
  }

  .article-theme-reflection .reflection-figure--water::after {
    background: linear-gradient(90deg, rgba(3, 10, 23, 0.88), rgba(3, 10, 23, 0.22) 78%, transparent);
  }

  .article-theme-reflection .reflection-figure--water figcaption {
    right: 20%;
    left: 18px;
  }

  .article-theme-reflection .reflection-output,
  .article-theme-reflection .reflection-timeline {
    padding: 18px 16px;
    border-radius: 15px;
  }

  .article-theme-reflection .reflection-output figcaption {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
    margin-bottom: 18px;
  }

  .article-theme-reflection .reflection-output__row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .article-theme-reflection .reflection-output__label {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
  }

  .article-theme-reflection .reflection-output__track {
    height: 13px;
  }

  .article-theme-reflection .reflection-component-title {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }

  .article-theme-reflection .reflection-timeline ol {
    grid-template-columns: 1fr;
    gap: 18px;
    padding-left: 4px;
  }

  .article-theme-reflection .reflection-timeline ol::before {
    top: 7px;
    bottom: 7px;
    left: 10px;
    right: auto;
    width: 1px;
    height: auto;
    transform: scaleY(1);
    transform-origin: center top;
  }

  .article-theme-reflection .reflection-timeline.reveal:not(.is-in) ol::before {
    transform: scaleY(0);
  }

  .article-theme-reflection .reflection-timeline li {
    padding: 0 0 0 32px;
    font-size: 0.84rem;
  }

  .article-theme-reflection .reflection-timeline li::before {
    top: 1px;
    left: 0;
  }

  .article-theme-reflection .reflection-stance {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .article-theme-reflection .reflection-stance__item {
    padding: 17px 17px 16px;
    border-radius: 14px;
  }

  .article-theme-reflection .reflection-ending {
    padding: 19px 17px 19px 20px;
    border-radius: 0 13px 13px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-theme-reflection .reflection-figure img,
  .article-theme-reflection .reflection-output__fill,
  .article-theme-reflection .reflection-timeline ol::before,
  .article-theme-reflection .reflection-stance__item {
    transition: none !important;
    transform: none !important;
  }
}

/* ===========================================================================
   AI-native collaboration essay
   A restrained evidence / workflow visual language, scoped to
   `visual_theme: ai-native`.
   =========================================================================== */
.article-theme-ai-native {
  --ai-cyan: #59e3ff;
  --ai-violet: #8a78ff;
  --ai-warm: #f0b866;
  --ai-cyan-ink: var(--ai-cyan);
  --ai-violet-ink: #b8b2ff;
  --ai-warm-ink: var(--ai-warm);
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-color: color-mix(in srgb, var(--ai-violet) 19%, var(--surface-border));
  background:
    radial-gradient(circle at 92% 1%, color-mix(in srgb, var(--ai-violet) 12%, transparent), transparent 28rem),
    radial-gradient(circle at 5% 32%, color-mix(in srgb, var(--ai-cyan) 8%, transparent), transparent 27rem),
    linear-gradient(160deg, color-mix(in srgb, var(--bg-2) 88%, transparent), var(--surface));
  box-shadow: 0 30px 84px rgba(0, 0, 0, 0.34), 0 0 0 1px color-mix(in srgb, var(--ai-violet) 7%, transparent);
}

.article-theme-ai-native::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(color-mix(in srgb, var(--ai-cyan) 3%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--ai-violet) 3%, transparent) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.65), transparent 70%);
  opacity: 0.7;
}

.article-theme-ai-native .article-header {
  position: relative;
  overflow: hidden;
  margin-bottom: 38px;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid color-mix(in srgb, var(--ai-violet) 22%, var(--surface-border));
  border-radius: 20px;
  background:
    linear-gradient(125deg, color-mix(in srgb, var(--ai-violet) 10%, transparent), transparent 54%),
    radial-gradient(circle at 88% 15%, color-mix(in srgb, var(--ai-cyan) 12%, transparent), transparent 34%),
    color-mix(in srgb, var(--bg-2) 80%, transparent);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.06), 0 20px 48px rgba(0, 0, 0, 0.2);
}

.article-theme-ai-native .article-header::before {
  content: "2026  ·  AI 协作观察";
  display: inline-flex;
  margin-bottom: 13px;
  padding: 5px 9px;
  border: 1px solid color-mix(in srgb, var(--ai-cyan) 30%, transparent);
  border-radius: 999px;
  color: color-mix(in srgb, var(--ai-cyan-ink) 82%, var(--text-1));
  background: color-mix(in srgb, var(--ai-cyan) 7%, transparent);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.article-theme-ai-native .article-header::after {
  content: "";
  position: absolute;
  right: -34px;
  bottom: -84px;
  width: 240px;
  height: 160px;
  border: 1px solid color-mix(in srgb, var(--ai-cyan) 20%, transparent);
  border-radius: 50%;
  box-shadow: 0 -26px 0 -25px color-mix(in srgb, var(--ai-violet) 24%, transparent), 0 -52px 0 -51px color-mix(in srgb, var(--ai-warm) 18%, transparent);
  transform: rotate(-8deg);
  pointer-events: none;
}

.article-theme-ai-native .article-header h1,
.article-theme-ai-native .post-meta {
  position: relative;
  z-index: 1;
}

.article-theme-ai-native .article-header h1 {
  background-image: linear-gradient(105deg, var(--text-1), var(--ai-cyan-ink) 45%, var(--ai-violet-ink) 77%, var(--text-1));
}

.article-theme-ai-native .article-content {
  --prose-w: min(100%, 50rem);
  font-size: 1.065rem;
  line-height: 1.92;
}

.article-theme-ai-native .article-content p {
  margin-bottom: 1.22em;
  text-align: left;
  text-justify: auto;
}

.article-theme-ai-native .article-content h2 {
  margin-top: 2.75em;
  border-bottom-color: color-mix(in srgb, var(--ai-violet) 16%, var(--hairline));
}

.article-theme-ai-native .article-content h2::before {
  border-radius: 4px;
  background: linear-gradient(145deg, var(--ai-cyan), var(--ai-violet) 62%, var(--ai-warm));
  box-shadow: 0 6px 18px color-mix(in srgb, var(--ai-violet) 32%, transparent);
}

.article-theme-ai-native .article-content strong {
  background: linear-gradient(180deg, transparent 64%, color-mix(in srgb, var(--ai-cyan) 16%, transparent) 64%);
}

.article-theme-ai-native .article-content > .ai-native-context,
.article-theme-ai-native .article-content > .ai-native-verdict,
.article-theme-ai-native .article-content > .ai-native-checks,
.article-theme-ai-native .article-content > .ai-native-timeline,
.article-theme-ai-native .article-content > .ai-native-stats,
.article-theme-ai-native .article-content > .ai-native-curve,
.article-theme-ai-native .article-content > .ai-native-flow,
.article-theme-ai-native .article-content > .ai-native-thesis,
.article-theme-ai-native .article-content > .ai-native-irony {
  max-width: none;
}

.article-theme-ai-native .article-content p.ai-native-thesis {
  position: relative;
  margin: 1.65em 0 1.85em;
  padding: 16px 20px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--ai-cyan) 24%, var(--surface-border));
  border-left: 4px solid var(--ai-cyan);
  border-radius: 0 14px 14px 0;
  color: color-mix(in srgb, var(--ai-cyan-ink) 56%, var(--text-1));
  background:
    linear-gradient(110deg, color-mix(in srgb, var(--ai-cyan) 10%, transparent), color-mix(in srgb, var(--ai-violet) 6%, transparent));
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.04), 0 12px 28px rgba(0, 0, 0, 0.12);
  font-size: 1.04rem;
  font-weight: 760;
  line-height: 1.75;
  letter-spacing: 0.01em;
}

.article-theme-ai-native .article-content p.ai-native-thesis::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 82px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--ai-violet));
  box-shadow: 0 0 14px color-mix(in srgb, var(--ai-violet) 35%, transparent);
}

.article-theme-ai-native .article-content p.ai-native-thesis--final {
  border-left-color: var(--ai-warm);
  color: var(--text-1);
  background:
    linear-gradient(110deg, color-mix(in srgb, var(--ai-warm) 10%, transparent), color-mix(in srgb, var(--ai-violet) 7%, transparent));
}

.article-theme-ai-native .article-content p.ai-native-thesis strong {
  color: var(--ai-warm-ink);
  background: none;
}

.ai-native-irony {
  position: relative;
  margin: 2em 0;
  padding: 22px 22px 18px;
  border: 1px solid color-mix(in srgb, var(--ai-warm) 28%, var(--surface-border));
  border-radius: 16px;
  background:
    radial-gradient(circle at 96% 0, color-mix(in srgb, var(--ai-warm) 12%, transparent), transparent 34%),
    color-mix(in srgb, var(--bg-2) 68%, transparent);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.04), 0 14px 34px rgba(0, 0, 0, 0.13);
}

.ai-native-irony::before {
  content: "PS";
  display: inline-flex;
  margin-bottom: 12px;
  padding: 4px 8px;
  border: 1px solid color-mix(in srgb, var(--ai-warm) 40%, transparent);
  border-radius: 999px;
  color: var(--ai-warm-ink);
  background: color-mix(in srgb, var(--ai-warm) 9%, transparent);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.article-theme-ai-native .article-content .ai-native-irony p {
  margin: 0 0 0.75em;
  color: var(--text-2);
  font-size: 0.95rem;
  line-height: 1.78;
}

.article-theme-ai-native .article-content .ai-native-irony p:last-child {
  margin-bottom: 0;
  color: var(--text-1);
  font-weight: 700;
}

.article-theme-ai-native .article-content .ai-native-irony strong {
  color: var(--ai-warm-ink);
  background: none;
}

.ai-native-context {
  position: relative;
  margin: 0 0 2.35em;
  padding: clamp(22px, 4vw, 34px);
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--ai-violet) 23%, var(--surface-border));
  border-radius: 20px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--ai-violet) 8%, transparent), transparent 56%),
    radial-gradient(circle at 92% 8%, color-mix(in srgb, var(--ai-cyan) 10%, transparent), transparent 28%),
    color-mix(in srgb, var(--bg-2) 78%, transparent);
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.05), 0 18px 42px rgba(0, 0, 0, 0.18);
}

.ai-native-context::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 140px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--ai-cyan), var(--ai-violet));
  box-shadow: 0 0 18px color-mix(in srgb, var(--ai-cyan) 35%, transparent);
}

.ai-native-context__eyebrow,
.ai-native-verdict__label,
.ai-native-checks__heading > span {
  color: color-mix(in srgb, var(--ai-cyan-ink) 80%, var(--text-1));
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.13em;
}

.ai-native-context h2 {
  margin: 12px 0 10px;
  padding: 0;
  border: 0;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
}

.ai-native-context h2::before {
  display: none !important;
}

.ai-native-context p {
  max-width: 48rem;
  margin: 0 0 0.8em;
  color: var(--text-2);
  font-size: 0.98rem;
  line-height: 1.78;
}

.ai-native-context__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 22px;
}

.ai-native-context__item {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 10px;
  row-gap: 2px;
  min-width: 0;
  padding: 14px 15px;
  border-top: 1px solid color-mix(in srgb, var(--ai-violet) 25%, var(--surface-border));
  background: color-mix(in srgb, var(--bg-3) 44%, transparent);
}

.ai-native-context__item > strong,
.ai-native-context__item > span:last-child {
  grid-column: 2;
}

.ai-native-context__icon {
  grid-row: 1 / span 2;
  color: var(--ai-cyan-ink);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
}

.ai-native-context__item > strong {
  color: var(--text-1);
  font-size: 0.86rem;
}

.ai-native-context__item > span:last-child {
  color: var(--text-3);
  font-size: 0.78rem;
  line-height: 1.55;
}

.ai-native-verdict {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  margin: 2em 0 2.3em;
  padding: 20px 22px;
  border: 1px solid color-mix(in srgb, var(--ai-cyan) 25%, var(--surface-border));
  border-left: 3px solid var(--ai-cyan);
  border-radius: 0 16px 16px 0;
  background: linear-gradient(110deg, color-mix(in srgb, var(--ai-cyan) 8%, transparent), color-mix(in srgb, var(--ai-violet) 6%, transparent));
}

.ai-native-verdict__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid color-mix(in srgb, var(--ai-cyan) 45%, transparent);
  border-radius: 50%;
  color: var(--ai-cyan-ink);
  background: color-mix(in srgb, var(--ai-cyan) 10%, transparent);
  font-family: var(--font-mono);
  font-weight: 700;
}

.ai-native-verdict strong {
  display: block;
  margin-top: 3px;
  color: var(--text-1);
  background: none !important;
  font-size: 1.08rem;
}

.ai-native-verdict p {
  margin: 4px 0 0;
  color: var(--text-3);
  font-size: 0.86rem;
  line-height: 1.6;
}

.ai-native-checks {
  margin: 2.1em 0 2.45em;
  padding: clamp(20px, 3.6vw, 28px);
  border: 1px solid color-mix(in srgb, var(--ai-violet) 19%, var(--surface-border));
  border-radius: 18px;
  background: linear-gradient(140deg, color-mix(in srgb, var(--ai-violet) 7%, transparent), color-mix(in srgb, var(--bg-2) 72%, transparent));
}

.ai-native-checks__heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.ai-native-checks__heading strong {
  color: var(--text-1);
  background: none !important;
  font-size: 0.98rem;
}

.ai-native-checks__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 11px;
}

.ai-native-check {
  min-width: 0;
  padding: 15px 14px 14px;
  border-top: 2px solid color-mix(in srgb, var(--ai-cyan) 44%, transparent);
  background: color-mix(in srgb, var(--bg-3) 45%, transparent);
}

.ai-native-check:nth-child(2) { border-top-color: color-mix(in srgb, var(--ai-violet) 60%, transparent); }
.ai-native-check:nth-child(3) { border-top-color: color-mix(in srgb, var(--ai-warm) 60%, transparent); }
.ai-native-check:nth-child(4) { border-top-color: color-mix(in srgb, var(--success) 60%, transparent); }

.ai-native-check svg {
  width: 22px;
  height: 22px;
  margin-bottom: 12px;
  fill: none;
  stroke: var(--ai-cyan-ink);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.ai-native-check:nth-child(2) svg { stroke: var(--ai-violet-ink); }
.ai-native-check:nth-child(3) svg { stroke: var(--ai-warm-ink); }
.ai-native-check:nth-child(4) svg { stroke: var(--success-fg); }

.ai-native-check strong {
  display: block;
  margin-bottom: 5px;
  color: var(--text-1);
  background: none !important;
  font-size: 0.88rem;
}

.ai-native-check span {
  display: block;
  color: var(--text-3);
  font-size: 0.75rem;
  line-height: 1.6;
}

.ai-native-timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 2em 0 2.45em;
  padding: 26px 20px 20px;
  border: 1px solid color-mix(in srgb, var(--ai-violet) 17%, var(--surface-border));
  border-radius: 18px;
  background: color-mix(in srgb, var(--bg-2) 64%, transparent);
}

.ai-native-timeline__line {
  position: absolute;
  top: 33px;
  right: 10%;
  left: 10%;
  height: 1px;
  background: linear-gradient(90deg, var(--ai-cyan), var(--ai-violet), var(--ai-warm));
  opacity: 0.78;
}

.ai-native-timeline__node {
  position: relative;
  z-index: 1;
  min-width: 0;
  padding-top: 28px;
}

.ai-native-timeline__node::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 0;
  width: 12px;
  height: 12px;
  border: 3px solid color-mix(in srgb, var(--bg-2) 84%, transparent);
  border-radius: 50%;
  background: var(--ai-cyan);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--ai-cyan) 44%, transparent), 0 0 14px color-mix(in srgb, var(--ai-cyan) 30%, transparent);
}

.ai-native-timeline__node:nth-of-type(4)::before { background: var(--ai-violet); }
.ai-native-timeline__node:nth-of-type(5)::before { background: var(--ai-warm); }

.ai-native-timeline__node span {
  display: block;
  margin-bottom: 9px;
  color: var(--ai-cyan-ink);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
}

.ai-native-timeline__node strong {
  display: block;
  margin-bottom: 5px;
  color: var(--text-1);
  background: none !important;
  font-size: 0.86rem;
  line-height: 1.4;
}

.ai-native-timeline__node small {
  display: block;
  color: var(--text-3);
  font-size: 0.76rem;
  line-height: 1.55;
}

.ai-native-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 1.9em 0 2.35em;
}

.ai-native-stats > div {
  min-width: 0;
  padding: 18px 17px 16px;
  border-top: 2px solid color-mix(in srgb, var(--ai-cyan) 55%, transparent);
  background: linear-gradient(145deg, color-mix(in srgb, var(--ai-cyan) 7%, transparent), color-mix(in srgb, var(--bg-2) 70%, transparent));
}

.ai-native-stats > div:nth-child(2) {
  border-top-color: color-mix(in srgb, var(--ai-violet) 62%, transparent);
  background: linear-gradient(145deg, color-mix(in srgb, var(--ai-violet) 7%, transparent), color-mix(in srgb, var(--bg-2) 70%, transparent));
}

.ai-native-stats > div:nth-child(3) {
  border-top-color: color-mix(in srgb, var(--ai-warm) 65%, transparent);
  background: linear-gradient(145deg, color-mix(in srgb, var(--ai-warm) 6%, transparent), color-mix(in srgb, var(--bg-2) 70%, transparent));
}

.ai-native-stats strong {
  display: block;
  margin-bottom: 3px;
  color: var(--text-1);
  background: none !important;
  font-family: var(--font-mono);
  font-size: clamp(1.45rem, 3.2vw, 2rem);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.ai-native-stats span {
  display: block;
  margin-bottom: 7px;
  color: color-mix(in srgb, var(--ai-cyan-ink) 78%, var(--text-1));
  font-size: 0.83rem;
  font-weight: 700;
}

.ai-native-stats > div:nth-child(2) span { color: var(--ai-violet-ink); }
.ai-native-stats > div:nth-child(3) span { color: var(--ai-warm-ink); }

.ai-native-stats small {
  display: block;
  color: var(--text-3);
  font-size: 0.74rem;
  line-height: 1.55;
}

.ai-native-curve {
  margin: 2.25em 0 2.45em;
  padding: 20px 18px 16px;
  border: 1px solid color-mix(in srgb, var(--ai-cyan) 18%, var(--surface-border));
  border-radius: 18px;
  background: color-mix(in srgb, var(--bg-2) 66%, transparent);
}

.ai-native-curve figcaption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 0 0 12px;
  text-align: left;
}

.ai-native-curve figcaption strong {
  color: var(--text-1);
  background: none !important;
  font-size: 0.96rem;
}

.ai-native-curve figcaption span {
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: 0.64rem;
}

.ai-native-curve svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

.ai-native-curve__grid,
.ai-native-curve__axis {
  fill: none;
  stroke: var(--hairline);
  stroke-width: 1;
}

.ai-native-curve__axis { stroke: color-mix(in srgb, var(--text-3) 55%, transparent); }
.ai-native-curve__fill { fill: url(#aiCurveFill); }
.ai-native-curve__line { fill: none; stroke: url(#aiCurveGradient); stroke-width: 3; stroke-linecap: round; }
.ai-native-curve__bottleneck { fill: none; stroke: color-mix(in srgb, var(--ai-warm) 75%, transparent); stroke-width: 2; stroke-dasharray: 6 7; stroke-linecap: round; }
.ai-native-curve__point { fill: var(--ai-cyan); stroke: var(--bg-2); stroke-width: 3; }
.ai-native-curve__point--warm { fill: var(--ai-warm); }
.ai-native-curve text { fill: var(--text-3); font-family: var(--font-sans); font-size: 12px; }
.ai-native-curve__label { fill: var(--ai-cyan-ink) !important; font-weight: 700; }
.ai-native-curve__label--warm { fill: var(--ai-warm-ink) !important; }

.ai-native-flow {
  display: flex;
  align-items: stretch;
  gap: 7px;
  margin: 2em 0 2.45em;
  padding: 18px 14px;
  border-top: 1px solid color-mix(in srgb, var(--ai-violet) 25%, var(--surface-border));
  border-bottom: 1px solid color-mix(in srgb, var(--ai-violet) 25%, var(--surface-border));
}

.ai-native-flow > div {
  flex: 1 1 0;
  min-width: 0;
  padding: 8px 7px;
}

.ai-native-flow > div span {
  display: block;
  margin-bottom: 8px;
  color: var(--ai-cyan-ink);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
}

.ai-native-flow > div strong {
  display: block;
  margin-bottom: 4px;
  color: var(--text-1);
  background: none !important;
  font-size: 0.88rem;
}

.ai-native-flow > div small {
  display: block;
  color: var(--text-3);
  font-size: 0.71rem;
  line-height: 1.5;
}

.ai-native-flow > i {
  align-self: center;
  flex: 0 0 auto;
  color: color-mix(in srgb, var(--ai-violet) 75%, var(--text-3));
  font-style: normal;
  font-size: 1rem;
}

.article-theme-ai-native .article-content > ol > li::before {
  background: linear-gradient(135deg, var(--ai-violet), var(--ai-cyan));
}

.article-theme-ai-native .article-footer a {
  border-color: color-mix(in srgb, var(--ai-violet) 18%, var(--surface-border));
}

[data-theme="light"] .article-theme-ai-native {
  --ai-cyan-ink: #08728a;
  --ai-violet-ink: #4658dc;
  --ai-warm-ink: #7a5700;
  background:
    radial-gradient(circle at 92% 1%, rgba(105, 128, 240, 0.12), transparent 28rem),
    radial-gradient(circle at 5% 32%, rgba(50, 183, 210, 0.08), transparent 27rem),
    linear-gradient(160deg, rgba(248, 251, 255, 0.96), rgba(245, 247, 253, 0.92));
  box-shadow: 0 28px 72px rgba(45, 62, 104, 0.13), 0 0 0 1px rgba(81, 104, 176, 0.08);
}

[data-theme="light"] .article-theme-ai-native .article-header,
[data-theme="light"] .article-theme-ai-native .ai-native-context,
[data-theme="light"] .article-theme-ai-native .ai-native-checks,
[data-theme="light"] .article-theme-ai-native .ai-native-timeline,
[data-theme="light"] .article-theme-ai-native .ai-native-curve {
  background-color: rgba(255, 255, 255, 0.76);
  box-shadow: 0 16px 38px rgba(54, 74, 122, 0.1);
}

@media (max-width: 760px) {
  .article-theme-ai-native {
    padding: 20px 16px 30px;
    border-radius: 22px;
  }

  .article-theme-ai-native .article-header {
    margin-bottom: 28px;
    padding: 22px 18px;
    border-radius: 17px;
  }

  .ai-native-context__grid,
  .ai-native-checks__grid,
  .ai-native-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ai-native-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 14px;
  }

  .ai-native-timeline__line {
    top: 26px;
    right: 18px;
    left: 18px;
    height: calc(50% - 6px);
    background: linear-gradient(180deg, var(--ai-cyan), var(--ai-violet), var(--ai-warm));
  }

  .ai-native-timeline__node { padding-top: 23px; }
  .ai-native-timeline__node::before { top: 22px; }

  .ai-native-flow {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 8px;
  }

  .ai-native-flow > i { display: none; }
  .ai-native-flow > div { padding: 11px 8px; border-bottom: 1px solid var(--hairline); }
  .ai-native-flow > div:nth-last-child(-n + 2) { border-bottom: 0; }

  .ai-native-curve { padding: 17px 11px 12px; }
  .ai-native-curve figcaption { align-items: flex-start; flex-direction: column; gap: 3px; }
  .ai-native-curve svg { min-width: 0; transform-origin: left top; }
  .ai-native-curve text { font-size: 22px; }
  .ai-native-curve__grid,
  .ai-native-curve__axis { stroke-width: 2; }
  .ai-native-curve__line { stroke-width: 5; }
  .ai-native-curve__bottleneck { stroke-width: 4; stroke-dasharray: 12 12; }
  .ai-native-curve__point { r: 7px; stroke-width: 5; }
}

@media (max-width: 520px) {
  .ai-native-context__grid,
  .ai-native-checks__grid,
  .ai-native-timeline,
  .ai-native-stats {
    grid-template-columns: 1fr;
  }

  .ai-native-timeline__line {
    top: 27px;
    bottom: 24px;
    left: 18px;
    right: auto;
    width: 1px;
    height: auto;
  }

  .ai-native-timeline__node { padding: 0 0 0 30px; }
  .ai-native-timeline__node::before { top: 2px; left: 0; }
  .ai-native-flow { grid-template-columns: 1fr; }
  .ai-native-flow > div:nth-last-child(-n + 2) { border-bottom: 1px solid var(--hairline); }
  .ai-native-flow > div:last-child { border-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .article-theme-ai-native * { scroll-behavior: auto !important; }
}