/* =========================================================
   飞行雪绒 · 文档站主题
   风格基线：fxxr.store（像素粗描边 / 粉青渐变 / 硬阴影）
   ========================================================= */

@font-face {
  font-family: "FSV Sans";
  src: url("./fonts/HarmonyOS_Sans_SC_Bold.subset.woff2") format("woff2");
  font-weight: 400 900;
  font-display: swap;
}

@font-face {
  font-family: "FSV Tube";
  src: url("./fonts/WuWaSolarisDigitalTube-Regular.ttf") format("truetype");
  font-display: swap;
}

:root {
  --pink: #ffb6c1;
  --pink-deep: #ff95a4;
  --cyan: #add8e6;
  --cyan-deep: #81c6dd;
  --blue: #234c80;
  --ink: #101010;
  --paper: rgba(255, 248, 251, 0.86);
  --paper-strong: rgba(255, 255, 255, 0.94);
  --paper-flat: #fffdfd;
  --shadow: rgba(35, 76, 128, 0.22);
  --muted: #4a5b73;
  --code-bg: rgba(35, 76, 128, 0.07);
  --grid-line-a: rgba(129, 198, 221, 0.96);
  --grid-line-b: rgba(255, 182, 193, 0.9);
  --page-bg: linear-gradient(135deg, #ffe1e8 0%, var(--pink) 34%, #d9eef6 72%, var(--cyan) 100%);
  --shell-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.66), rgba(255, 255, 255, 0.12)),
    linear-gradient(135deg, rgba(255, 182, 193, 0.88), rgba(173, 216, 230, 0.92));
  --grid-size: 34px;
  --pixel: 3px;
  --mx: 50vw;
  --my: 50vh;
  --grid-glow: 0;
  --sans: "FSV Sans", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: "JetBrains Mono", "Cascadia Mono", Consolas, "SFMono-Regular", "Microsoft YaHei Mono", monospace;
}

body.dark {
  --pink: #ff9fb0;
  --pink-deep: #ff7d92;
  --cyan: #7fc4dd;
  --cyan-deep: #58a9c6;
  --blue: #a9cff2;
  --ink: #e9f2ff;
  --paper: rgba(16, 24, 40, 0.86);
  --paper-strong: rgba(13, 20, 34, 0.94);
  --paper-flat: #0f1725;
  --shadow: rgba(0, 0, 0, 0.55);
  --muted: #9db2cf;
  --code-bg: rgba(173, 216, 230, 0.09);
  --grid-line-a: rgba(129, 198, 221, 0.55);
  --grid-line-b: rgba(255, 182, 193, 0.42);
  --page-bg: linear-gradient(135deg, #1b1430 0%, #24203f 34%, #14283c 72%, #0d1a26 100%);
  --shell-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.01)),
    linear-gradient(135deg, rgba(255, 182, 193, 0.14), rgba(173, 216, 230, 0.16));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--body);
  color: var(--ink);
  background: var(--page-bg);
  background-attachment: fixed;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(35, 76, 128, 0.1));
  pointer-events: none;
  z-index: 0;
}

body.dark::before {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.28));
}

/* ---------- 鼠标跟随科技网格 ---------- */
.tech-grid {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: calc(var(--grid-glow) * 0.9);
  transition: opacity 180ms ease-out;
  background-image: linear-gradient(90deg, var(--grid-line-a) 1px, transparent 1px),
    linear-gradient(0deg, var(--grid-line-a) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  -webkit-mask-image: radial-gradient(circle 240px at var(--mx) var(--my), rgba(0, 0, 0, 0.98),
      rgba(0, 0, 0, 0.76) 46%, transparent 76%);
  mask-image: radial-gradient(circle 240px at var(--mx) var(--my), rgba(0, 0, 0, 0.98),
      rgba(0, 0, 0, 0.76) 46%, transparent 76%);
}

.tech-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, var(--grid-line-b) 1px, transparent 1px),
    linear-gradient(0deg, var(--grid-line-b) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  opacity: 0.9;
  filter: blur(12px);
}

/* ---------- 外壳 ---------- */
.site {
  position: relative;
  z-index: 2;
  width: min(1480px, calc(100% - 40px));
  margin: 26px auto 54px;
}

.frame {
  position: absolute;
  inset: -14px;
  border: var(--pixel) solid var(--ink);
  background: linear-gradient(0deg, rgba(35, 76, 128, 0.16), rgba(35, 76, 128, 0.16));
  box-shadow: 12px 12px 0 var(--shadow);
  pointer-events: none;
}

.shell {
  position: relative;
  overflow: hidden;
  background: var(--shell-bg);
  border: var(--pixel) solid var(--ink);
  box-shadow: 8px 8px 0 var(--shadow);
  backdrop-filter: blur(5px);
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 22px;
  background: rgba(173, 216, 230, 0.96);
  border-bottom: var(--pixel) solid var(--ink);
}

body.dark .topbar {
  background: rgba(20, 34, 52, 0.94);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
  text-decoration: none;
  color: inherit;
}

.brand-icon {
  width: 46px;
  height: 46px;
  flex: none;
  position: relative;
  border: var(--pixel) solid var(--ink);
  background: linear-gradient(135deg, var(--pink-deep), var(--cyan-deep));
  box-shadow: 4px 4px 0 rgba(16, 16, 16, 0.16);
}

.brand-icon::before,
.brand-icon::after {
  content: "";
  position: absolute;
  width: 9px;
  height: 9px;
  top: 14px;
  background: #fffdfd;
  border: 2px solid #101010;
}

.brand-icon::before {
  left: 7px;
}

.brand-icon::after {
  right: 7px;
}

.brand-icon span {
  position: absolute;
  left: 50%;
  bottom: 9px;
  width: 13px;
  height: 3px;
  background: #101010;
  transform: translateX(-50%);
}

.brand-text h1 {
  font-family: var(--sans);
  margin: 0;
  font-size: 22px;
  line-height: 1;
  letter-spacing: 0.05em;
}

.brand-text p {
  margin: 5px 0 0;
  font-size: 12px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.04em;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.nav a,
.button,
.icon-button {
  font-family: var(--sans);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 13px;
  border: 2px solid var(--ink);
  text-decoration: none;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--paper-strong);
  box-shadow: 4px 4px 0 var(--shadow);
  cursor: pointer;
  transition: transform 120ms steps(2, end), box-shadow 120ms steps(2, end), background 120ms steps(2, end);
}

.nav a:hover,
.nav a:focus-visible,
.button:hover,
.button:focus-visible,
.icon-button:hover,
.icon-button:focus-visible {
  transform: translate(-3px, -3px);
  box-shadow: 7px 7px 0 var(--shadow);
  outline: none;
}

.nav a:active,
.button:active,
.icon-button:active {
  transform: translate(1px, 1px);
  box-shadow: 3px 3px 0 var(--shadow);
}

.nav a.current {
  background: linear-gradient(135deg, var(--pink), var(--cyan));
}

.button.primary {
  background: linear-gradient(135deg, var(--pink), #ffd8df);
}

.button.secondary {
  background: linear-gradient(135deg, rgba(173, 216, 230, 0.94), rgba(255, 255, 255, 0.74));
}

body.dark .button.primary {
  background: linear-gradient(135deg, rgba(255, 159, 176, 0.4), rgba(255, 159, 176, 0.16));
}

body.dark .button.secondary {
  background: linear-gradient(135deg, rgba(127, 196, 221, 0.32), rgba(127, 196, 221, 0.12));
}

.icon-button {
  padding: 9px 11px;
  min-width: 40px;
}

.search-trigger {
  min-width: 190px;
  justify-content: space-between;
  text-transform: none;
  letter-spacing: 0.02em;
  font-size: 13px;
}

.search-trigger kbd {
  font-family: var(--mono);
  font-size: 11px;
  border: 2px solid var(--ink);
  padding: 1px 5px;
  background: var(--paper-flat);
}

.menu-toggle {
  display: none;
}

.eyebrow {
  font-family: var(--sans);
  display: inline-block;
  padding: 3px 9px;
  margin-bottom: 8px;
  background: var(--paper-flat);
  border: 2px solid var(--ink);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ---------- 首页 ---------- */
.hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  border-bottom: var(--pixel) solid var(--ink);
}

.hero-copy,
.hero-visual {
  padding: 30px;
}

.hero-copy {
  border-right: var(--pixel) solid var(--ink);
}

.glass-card,
.feature-card,
.link-button,
.doc-card {
  background: var(--paper);
  border: var(--pixel) solid var(--ink);
  box-shadow: 6px 6px 0 var(--shadow);
}

.glass-card {
  padding: 26px;
}

.glass-card h2 {
  font-family: var(--sans);
  margin: 0;
  font-size: clamp(28px, 3.4vw, 50px);
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.glass-card p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.85;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.meta-pill {
  font-family: var(--sans);
  padding: 7px 10px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 2px solid var(--ink);
  background: linear-gradient(135deg, rgba(255, 182, 193, 0.98), rgba(173, 216, 230, 0.9));
}

body.dark .meta-pill,
body.dark .feature-tag,
body.dark .doc-card-mark {
  background: linear-gradient(135deg, rgba(255, 159, 176, 0.32), rgba(127, 196, 221, 0.28));
}

.hero-visual {
  display: grid;
  align-content: start;
  gap: 14px;
  background: rgba(255, 255, 255, 0.12);
}

.hero-stage {
  position: relative;
  min-height: 430px;
  overflow: hidden;
  padding: 22px;
}

.hero-stage::before {
  content: "";
  position: absolute;
  inset: 14px;
  border: 2px dashed rgba(35, 76, 128, 0.28);
  pointer-events: none;
}

.badge {
  font-family: var(--sans);
  position: absolute;
  padding: 7px 9px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 2px solid var(--ink);
  background: var(--paper-flat);
  box-shadow: 4px 4px 0 var(--shadow);
  z-index: 2;
}

.badge.one {
  top: 20px;
  left: 20px;
}

.badge.two {
  top: 20px;
  right: 20px;
}

.badge.three {
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
}

.hero-pet,
.hero-speaker,
.hero-leopard {
  position: absolute;
  display: block;
  image-rendering: pixelated;
  filter: drop-shadow(8px 8px 0 rgba(35, 76, 128, 0.18));
}

.hero-pet {
  left: 50%;
  top: 34px;
  width: min(52%, 300px);
  transform: translateX(-52%);
}

.hero-speaker {
  left: 30px;
  bottom: 28px;
  width: min(32%, 150px);
}

.hero-leopard {
  right: 28px;
  bottom: 26px;
  width: min(30%, 145px);
  border: 2px solid var(--ink);
  background: rgba(255, 255, 255, 0.82);
  padding: 4px;
}

.section {
  position: relative;
  z-index: 1;
  padding: 30px;
  border-bottom: var(--pixel) solid var(--ink);
}

.section:last-of-type {
  border-bottom: 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.section-head h3 {
  font-family: var(--sans);
  margin: 0;
  font-size: clamp(20px, 2.6vw, 32px);
  letter-spacing: 0.03em;
}

.section-head p {
  margin: 0;
  max-width: 640px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--blue);
  font-weight: 600;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
  padding: 16px;
  display: flex;
  flex-direction: column;
}

.feature-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.feature-tag {
  font-family: var(--sans);
  display: inline-block;
  padding: 5px 8px;
  border: 2px solid var(--ink);
  background: linear-gradient(135deg, var(--pink), var(--cyan));
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.feature-thumb {
  width: 58px;
  height: 58px;
  object-fit: contain;
  image-rendering: pixelated;
  flex: none;
  filter: drop-shadow(4px 4px 0 rgba(35, 76, 128, 0.16));
}

.feature-card h4 {
  font-family: var(--sans);
  margin: 0 0 8px;
  font-size: 17px;
  letter-spacing: 0.02em;
}

.feature-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.feature-card .card-links {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  font-size: 12px;
  text-decoration: none;
  color: var(--ink);
  border: 2px solid var(--ink);
  background: var(--paper-flat);
  padding: 4px 8px;
  transition: background 120ms steps(2, end), transform 120ms steps(2, end);
}

.chip:hover {
  transform: translate(-2px, -2px);
  background: linear-gradient(135deg, var(--pink), var(--cyan));
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.link-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  text-decoration: none;
  color: var(--ink);
  transition: transform 120ms steps(2, end), box-shadow 120ms steps(2, end);
}

.link-button:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--shadow);
}

.link-copy strong {
  font-family: var(--sans);
  display: block;
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.link-copy span {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--muted);
  font-weight: 600;
  line-height: 1.55;
}

.link-mark {
  font-family: var(--sans);
  min-width: 42px;
  padding: 8px 9px;
  text-align: center;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.1em;
  border: 2px solid var(--ink);
  background: linear-gradient(135deg, var(--pink), var(--cyan));
}

/* ---------- 文档布局 ---------- */
.docs-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 272px minmax(0, 1fr) 224px;
}

.sidebar {
  border-right: var(--pixel) solid var(--ink);
  background: rgba(255, 255, 255, 0.4);
  padding: 20px 16px 40px;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  position: sticky;
  top: 0;
}

body.dark .sidebar {
  background: rgba(10, 16, 28, 0.4);
}

.sidebar-group + .sidebar-group {
  margin-top: 18px;
}

.sidebar-group > h4 {
  font-family: var(--sans);
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
  border-bottom: 2px solid var(--ink);
  padding-bottom: 5px;
}

.sidebar-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 5px;
}

.sidebar-group a {
  display: block;
  padding: 7px 9px;
  font-size: 13.5px;
  text-decoration: none;
  color: var(--ink);
  border: 2px solid transparent;
  line-height: 1.35;
}

.sidebar-group a:hover {
  border-color: var(--ink);
  background: var(--paper-flat);
}

.sidebar-group a.active {
  border-color: var(--ink);
  background: linear-gradient(135deg, var(--pink), var(--cyan));
  box-shadow: 4px 4px 0 var(--shadow);
  font-weight: 800;
}

body.dark .sidebar-group a.active {
  background: linear-gradient(135deg, rgba(255, 159, 176, 0.34), rgba(127, 196, 221, 0.3));
}

.doc-main {
  padding: 26px 32px 48px;
  min-width: 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 14px;
}

.breadcrumb a {
  color: var(--blue);
}

.doc-header {
  border: var(--pixel) solid var(--ink);
  background: var(--paper);
  box-shadow: 6px 6px 0 var(--shadow);
  padding: 20px 22px;
  margin-bottom: 24px;
}

.doc-header h1 {
  font-family: var(--sans);
  margin: 0;
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.doc-header p.summary {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.doc-meta span,
.doc-meta a {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 2px solid var(--ink);
  padding: 5px 8px;
  background: var(--paper-flat);
  text-decoration: none;
  color: var(--ink);
}

.doc-meta a:hover {
  background: linear-gradient(135deg, var(--pink), var(--cyan));
}

.toc {
  border-left: var(--pixel) solid var(--ink);
  padding: 20px 14px 40px;
  position: sticky;
  top: 0;
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  background: rgba(255, 255, 255, 0.28);
}

body.dark .toc {
  background: rgba(10, 16, 28, 0.3);
}

.toc h4 {
  font-family: var(--sans);
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
  border-bottom: 2px solid var(--ink);
  padding-bottom: 5px;
}

.toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.toc li.lv3 {
  padding-left: 12px;
}

.toc li.lv4 {
  padding-left: 22px;
}

.toc a {
  display: block;
  font-size: 12.5px;
  line-height: 1.45;
  text-decoration: none;
  color: var(--muted);
  padding: 3px 5px;
  border-left: 3px solid transparent;
}

.toc a:hover {
  color: var(--ink);
}

.toc a.active {
  color: var(--ink);
  font-weight: 800;
  border-left-color: var(--pink-deep);
  background: rgba(255, 182, 193, 0.22);
}

/* ---------- 正文排版 ---------- */
.prose {
  font-size: 15.5px;
  line-height: 1.9;
  word-wrap: break-word;
}

.prose > *:first-child {
  margin-top: 0;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4,
.prose h5 {
  font-family: var(--sans);
  line-height: 1.35;
  letter-spacing: 0.02em;
  scroll-margin-top: 20px;
}

.prose h1 {
  font-size: 28px;
  margin: 34px 0 16px;
  border-bottom: var(--pixel) solid var(--ink);
  padding-bottom: 8px;
}

.prose h2 {
  font-size: 23px;
  margin: 34px 0 14px;
  padding: 6px 0 6px 12px;
  border-left: 8px solid var(--pink-deep);
  border-bottom: 2px solid var(--ink);
}

.prose h3 {
  font-size: 19px;
  margin: 26px 0 10px;
  padding-left: 10px;
  border-left: 5px solid var(--cyan-deep);
}

.prose h4 {
  font-size: 16.5px;
  margin: 22px 0 8px;
}

.prose p {
  margin: 12px 0;
}

.prose a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 2px solid var(--pink-deep);
  font-weight: 600;
}

.prose a:hover {
  background: rgba(255, 182, 193, 0.3);
}

.prose ul,
.prose ol {
  margin: 12px 0;
  padding-left: 24px;
}

.prose li {
  margin: 6px 0;
}

.prose li::marker {
  color: var(--pink-deep);
  font-weight: 900;
}

.prose blockquote {
  margin: 16px 0;
  padding: 12px 16px;
  border: 2px solid var(--ink);
  border-left: 8px solid var(--cyan-deep);
  background: var(--code-bg);
  box-shadow: 5px 5px 0 var(--shadow);
}

.prose blockquote p {
  margin: 6px 0;
}

.prose hr {
  border: 0;
  border-top: var(--pixel) dashed rgba(35, 76, 128, 0.4);
  margin: 28px 0;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--code-bg);
  border: 1px solid rgba(35, 76, 128, 0.25);
  padding: 1px 5px;
  word-break: break-word;
}

.prose pre {
  position: relative;
  margin: 16px 0;
  padding: 16px 18px;
  overflow-x: auto;
  background: var(--paper-flat);
  border: var(--pixel) solid var(--ink);
  box-shadow: 6px 6px 0 var(--shadow);
  line-height: 1.7;
}

.prose pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: 13px;
  white-space: pre;
}

.prose pre.plain code {
  white-space: pre-wrap;
  word-break: break-word;
}

.copy-btn {
  font-family: var(--sans);
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 2px solid var(--ink);
  background: linear-gradient(135deg, var(--pink), var(--cyan));
  padding: 3px 7px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 140ms ease-out;
  color: var(--ink);
}

.prose pre:hover .copy-btn,
.copy-btn:focus-visible {
  opacity: 1;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14px;
  border: var(--pixel) solid var(--ink);
  box-shadow: 6px 6px 0 var(--shadow);
  background: var(--paper-flat);
  display: block;
  overflow-x: auto;
}

.prose th,
.prose td {
  border: 2px solid var(--ink);
  padding: 8px 11px;
  text-align: left;
  vertical-align: top;
}

.prose th {
  font-family: var(--sans);
  background: linear-gradient(135deg, var(--pink), var(--cyan));
  letter-spacing: 0.04em;
}

body.dark .prose th {
  background: linear-gradient(135deg, rgba(255, 159, 176, 0.3), rgba(127, 196, 221, 0.26));
}

.prose img {
  max-width: 100%;
  border: var(--pixel) solid var(--ink);
  box-shadow: 6px 6px 0 var(--shadow);
  image-rendering: pixelated;
}

.headerlink {
  border: 0 !important;
  opacity: 0;
  margin-left: 8px;
  font-size: 0.7em;
  color: var(--pink-deep) !important;
}

.prose h1:hover .headerlink,
.prose h2:hover .headerlink,
.prose h3:hover .headerlink,
.prose h4:hover .headerlink {
  opacity: 1;
}

/* ---------- 上下篇 ---------- */
.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 38px;
}

.pager a {
  border: var(--pixel) solid var(--ink);
  background: var(--paper);
  box-shadow: 6px 6px 0 var(--shadow);
  padding: 14px 16px;
  text-decoration: none;
  color: var(--ink);
  transition: transform 120ms steps(2, end);
}

.pager a:hover {
  transform: translate(-3px, -3px);
}

.pager a.next {
  text-align: right;
}

.pager span {
  display: block;
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
}

.pager strong {
  display: block;
  margin-top: 5px;
  font-size: 15px;
}

/* ---------- 文档总览页 ---------- */
.doc-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
  gap: 14px;
}

.doc-card {
  padding: 15px 16px;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 120ms steps(2, end), box-shadow 120ms steps(2, end);
}

.doc-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--shadow);
}

.doc-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.doc-card-mark {
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 2px solid var(--ink);
  background: linear-gradient(135deg, var(--pink), var(--cyan));
  padding: 4px 7px;
}

.doc-card h4 {
  font-family: var(--sans);
  margin: 0;
  font-size: 16.5px;
}

.doc-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.doc-card .size {
  font-size: 11px;
  color: var(--blue);
  font-weight: 700;
  letter-spacing: 0.06em;
}

/* ---------- 搜索弹层 ---------- */
.search-modal {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 12vh 20px 20px;
  background: rgba(16, 24, 40, 0.45);
  backdrop-filter: blur(4px);
}

.search-modal.open {
  display: flex;
}

.search-panel {
  width: min(680px, 100%);
  background: var(--paper-strong);
  border: var(--pixel) solid var(--ink);
  box-shadow: 12px 12px 0 rgba(35, 76, 128, 0.4);
  max-height: 70vh;
  display: flex;
  flex-direction: column;
}

.search-panel input {
  font-family: var(--body);
  font-size: 16px;
  padding: 15px 18px;
  border: 0;
  border-bottom: var(--pixel) solid var(--ink);
  background: transparent;
  color: var(--ink);
  outline: none;
  width: 100%;
}

.search-results {
  overflow-y: auto;
  padding: 8px;
}

.search-results a {
  display: block;
  padding: 10px 12px;
  text-decoration: none;
  color: var(--ink);
  border: 2px solid transparent;
}

.search-results a:hover,
.search-results a.sel {
  border-color: var(--ink);
  background: linear-gradient(135deg, rgba(255, 182, 193, 0.6), rgba(173, 216, 230, 0.5));
}

.search-results .r-title {
  font-family: var(--sans);
  font-size: 15px;
}

.search-results .r-cat {
  font-size: 11px;
  color: var(--blue);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.search-results .r-snippet {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.6;
  margin-top: 3px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.search-results mark {
  background: var(--pink);
  color: #101010;
  padding: 0 2px;
}

.search-empty {
  padding: 22px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 20px;
  background: rgba(35, 76, 128, 0.12);
  border-top: var(--pixel) solid var(--ink);
  font-size: 12px;
  font-weight: 700;
}

.footer a {
  color: inherit;
}

.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 60;
  display: none;
}

.to-top.show {
  display: inline-flex;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .docs-layout {
    grid-template-columns: 250px minmax(0, 1fr);
  }

  .toc {
    display: none;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .links-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .site {
    width: calc(100% - 24px);
    margin: 16px auto 40px;
  }

  .frame {
    inset: -8px;
    box-shadow: 8px 8px 0 var(--shadow);
  }

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

  .hero-copy {
    border-right: 0;
    border-bottom: var(--pixel) solid var(--ink);
  }

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

  .docs-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .sidebar {
    display: none;
    position: static;
    max-height: none;
    border-right: 0;
    border-bottom: var(--pixel) solid var(--ink);
  }

  .sidebar.open {
    display: block;
  }

  .doc-main {
    padding: 20px 16px 40px;
  }

  .search-trigger {
    min-width: 0;
  }

  .search-trigger span.hint,
  .search-trigger kbd {
    display: none;
  }

  .feature-grid,
  .feature-grid.three,
  .links-grid,
  .pager {
    grid-template-columns: minmax(0, 1fr);
  }

  .section {
    padding: 22px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}