/* =========================================================================
   168真人娱 · 共享样式表  /assets/site.css
   结构：reset → 变量 → 中文排版 → 外壳（header/footer）→ 通用组件 → 响应式
   ========================================================================= */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 18px); }
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }
input, textarea, select { font: inherit; }

/* ---------- 变量 ---------- */
:root {
  --ink: #0B1F3A;
  --ink-2: #16345C;
  --ink-3: #1E4A7A;
  --green: #00C48C;
  --green-soft: #E3FBF3;
  --green-deep: #046B4E;
  --amber: #FFB020;
  --amber-soft: #FFF4E0;
  --silver: #E9EEF5;
  --paper: #FFFFFF;
  --line: #C8D3E0;
  --rust: #B23A2E;
  --muted: #53657D;

  --radius-lg: 26px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --pill: 999px;

  --header-h: 62px;
  --maxw: 1200px;

  --font-serif: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shadow-card: 0 14px 30px rgba(11, 31, 58, .10);
}

/* ---------- 基础排版 ---------- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink);
  background-color: #F8FAFC;
  background-image: repeating-linear-gradient(to right, rgba(11, 31, 58, .035) 0 1px, transparent 1px 84px);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-weight: 600; line-height: 1.2; }
strong { font-weight: 700; }
hr { border: 0; border-top: 1px solid var(--line); margin: 28px 0; }

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: -9999px; top: 0;
  z-index: 200;
  padding: 10px 18px;
  background: var(--green);
  color: var(--ink);
  font-weight: 700;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------- 外壳：页头框架 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--ink);
  color: #FFFFFF;
  border-bottom: 1px solid var(--ink-2);
  box-shadow: 0 1px 0 rgba(255, 176, 32, .35);
}
.header-frame {
  display: flex;
  align-items: center;
  gap: 14px;
  width: min(100% - 28px, var(--maxw));
  margin-inline: auto;
  min-height: var(--header-h);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 6px 0;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: var(--radius-sm);
  background: var(--green);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-family: var(--font-serif); font-size: 19px; font-weight: 700; color: #FFFFFF; }
.brand-sub {
  font-size: 10.5px;
  letter-spacing: .18em;
  color: rgba(255, 255, 255, .52);
  margin-top: 2px;
}

/* 移动导航按钮 */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-left: auto;
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: var(--pill);
  color: #FFFFFF;
  font-size: 13px;
  letter-spacing: .08em;
  transition: border-color .18s ease, color .18s ease, background-color .18s ease;
}
.nav-toggle:hover { border-color: var(--amber); color: var(--amber); }
.nav-toggle-bars {
  position: relative;
  display: inline-block;
  width: 16px; height: 2px;
  background: currentColor;
  border-radius: 2px;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute; left: 0;
  width: 16px; height: 2px;
  background: currentColor;
  border-radius: 2px;
}
.nav-toggle-bars::before { top: -5px; }
.nav-toggle-bars::after { top: 5px; }
.nav-toggle[aria-expanded="true"] { background: rgba(255, 176, 32, .16); border-color: var(--amber); color: var(--amber); }

/* 导航（移动端为框架内侧滑出面板） */
.site-nav {
  position: absolute;
  left: 0; right: 0; top: 100%;
  background: var(--ink);
  border-bottom: 3px solid var(--amber);
  padding: 4px 16px 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transition: max-height .28s ease, opacity .2s ease, visibility .2s ease;
}
.site-nav[data-open] {
  max-height: 78vh;
  overflow-y: auto;
  opacity: 1;
  visibility: visible;
}
.nav-list { display: grid; }
.nav-link {
  display: block;
  padding: 13px 4px;
  color: rgba(255, 255, 255, .86);
  font-size: 15.5px;
  border-bottom: 1px solid rgba(255, 255, 255, .10);
  transition: color .18s ease, background-color .18s ease;
}
.nav-link:hover { color: #FFFFFF; background: rgba(255, 255, 255, .06); }
.nav-link[aria-current="page"] {
  color: #FFFFFF;
  background: rgba(0, 196, 140, .16);
  box-shadow: inset 3px 0 0 var(--green);
  padding-left: 12px;
}
.nav-panel-foot { padding: 16px 0 22px; }
.nav-cta {
  display: block;
  text-align: center;
  padding: 12px 20px;
  border-radius: var(--pill);
  background: var(--amber);
  color: var(--ink);
  font-weight: 700;
  font-size: 15px;
  transition: background-color .18s ease, color .18s ease;
}
.nav-cta:hover { background: var(--green); }
.nav-panel-note {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .5);
  text-align: center;
}

/* 框架右端：版本戳 + 来信入口 */
.frame-meta { display: none; align-items: center; gap: 12px; margin-left: auto; }
.version-stamp {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 5px 12px;
  border: 1px solid rgba(255, 176, 32, .55);
  border-radius: var(--radius-sm);
  background: rgba(255, 176, 32, .13);
  transition: background-color .16s ease, border-color .16s ease, color .16s ease;
}
.version-stamp-label {
  font-size: 10px;
  letter-spacing: .2em;
  color: rgba(255, 176, 32, .9);
  line-height: 1.3;
}
.version-stamp-value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--amber);
  line-height: 1.35;
}
.version-stamp-date {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: rgba(255, 255, 255, .58);
  line-height: 1.3;
}
.version-stamp:hover { background: var(--amber); border-color: var(--amber); }
.version-stamp:hover .version-stamp-label,
.version-stamp:hover .version-stamp-value,
.version-stamp:hover .version-stamp-date { color: var(--ink); }

.header-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: var(--pill);
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}
.header-cta:hover { background: var(--green); border-color: var(--green); color: var(--ink); }

/* ---------- 外壳：页脚 ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, .76);
  font-size: 14.5px;
  border-top: 3px solid var(--ink-2);
  margin-top: 48px;
}
.footer-frame {
  width: min(100% - 28px, var(--maxw));
  margin-inline: auto;
  padding: 44px 0 18px;
}
.footer-grid {
  display: grid;
  gap: 30px;
  grid-template-columns: 1fr;
}
.footer-col { min-width: 0; }
.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: .02em;
}
.footer-lede { margin-top: 10px; max-width: 34ch; color: rgba(255, 255, 255, .68); }
.footer-col-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: #FFFFFF;
  padding-bottom: 8px;
  margin-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
  position: relative;
}
.footer-col-title::after {
  content: "";
  position: absolute;
  left: 0; bottom: -1px;
  width: 42px; height: 2px;
  background: var(--green);
}
.footer-list { display: grid; gap: 9px; }
.footer-link {
  position: relative;
  color: rgba(255, 255, 255, .76);
  transition: color .18s ease;
}
.footer-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .18s ease;
}
.footer-link:hover { color: #FFFFFF; }
.footer-link:hover::after { transform: scaleX(1); }
.footer-contact-list { color: rgba(255, 255, 255, .68); }
.footer-contact-list .mono { color: var(--amber); font-size: 13.5px; }
.footer-version {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, .14);
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, .55);
}
.footer-version-stamp {
  padding: 3px 10px;
  border-radius: 6px;
  border: 1px solid rgba(255, 176, 32, .5);
  background: rgba(255, 176, 32, .14);
  color: var(--amber);
}
.footer-copy { margin-left: auto; }

/* ---------- 通用容器 / 分区 ---------- */
.container { width: min(100% - 32px, var(--maxw)); margin-inline: auto; }
.container--narrow { width: min(100% - 32px, 760px); margin-inline: auto; }
.section { padding: 56px 0; }
.section--tight { padding: 32px 0; }
.section--ink { background: var(--ink); color: rgba(255, 255, 255, .86); }
.section--ink .section-title, .section--ink .display-title { color: #FFFFFF; }
.section--ink .eyebrow { color: var(--amber); }
.section--ink .lede { color: rgba(255, 255, 255, .72); }
.section--silver {
  background: var(--silver);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-head { max-width: 66ch; margin-bottom: 26px; }

/* ---------- 标题层级 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--green-deep);
  margin-bottom: 12px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--green); }
.display-title {
  font-family: var(--font-serif);
  font-size: clamp(34px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 700;
  line-height: 1.18;
}
.lede {
  margin-top: 14px;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.75;
  color: var(--muted);
  max-width: 58ch;
}

/* ---------- 正文 ---------- */
.prose { font-size: 17px; line-height: 1.85; color: #12263F; }
.prose > * + * { margin-top: 1.05em; }
.prose h2 { font-family: var(--font-serif); font-size: clamp(24px, 3vw, 32px); margin-top: 1.7em; }
.prose h3 { font-family: var(--font-serif); font-size: 19.5px; margin-top: 1.4em; }
.prose ul, .prose ol { padding-left: 1.1em; }
.prose ul { list-style: none; }
.prose ul li { position: relative; padding-left: 18px; }
.prose ul li::before {
  content: "";
  position: absolute; left: 0; top: .78em;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: var(--green);
}
.prose ol { list-style: decimal; }
.prose a { text-decoration: underline; text-decoration-color: var(--green); text-underline-offset: 3px; }
.prose strong { color: var(--ink); }

/* ---------- 栅格 ---------- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(228px, 1fr)); }
.split { display: grid; gap: 28px; grid-template-columns: 1fr; }

/* ---------- 卡片 / 标签 ---------- */
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--ink-2); box-shadow: var(--shadow-card); }
.card-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.card-body { font-size: 15.5px; color: #20364F; }
.card-meta { font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; color: var(--ink-2); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--pill);
  background: var(--paper);
  border: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--ink-2);
}
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: var(--silver);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--ink-2);
}
.tag--green { background: var(--green-soft); border-color: #9FE7D0; color: var(--green-deep); }
.tag--amber { background: var(--amber-soft); border-color: #F2CE8C; color: #8A5A00; }
.tag--rust { background: #FBEDEB; border-color: #E7BDB6; color: var(--rust); }

.ref-code {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--silver);
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-2);
}
.copy-btn {
  margin-left: 8px;
  padding: 2px 9px;
  border: 1px dashed var(--line);
  border-radius: 6px;
  font-size: 12px;
  color: var(--muted);
  background: transparent;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}
.copy-btn:hover { color: var(--ink); border-color: var(--ink); }
.copy-btn.is-copied { background: var(--green-soft); border-color: var(--green); color: var(--green-deep); }

/* ---------- 按钮 / 链接 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .16s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--ink); color: #FFFFFF; }
.btn--primary:hover { background: var(--green); color: var(--ink); }
.btn--amber { background: var(--amber); color: var(--ink); }
.btn--amber:hover { background: var(--ink); color: #FFFFFF; }
.btn--ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { background: var(--silver); border-color: var(--ink-2); }
.btn--small { padding: 7px 15px; font-size: 13.5px; }

.link-underline { position: relative; }
.link-underline::after {
  content: "";
  position: absolute;
  left: 0; bottom: -3px;
  width: 100%; height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .18s ease;
}
.link-underline:hover::after,
.link-underline:focus-visible::after { transform: scaleX(1); }

/* ---------- 面包屑 ---------- */
.breadcrumbs { font-size: 13px; color: var(--muted); }
.breadcrumbs-list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumbs-list li { display: flex; align-items: center; gap: 8px; }
.breadcrumbs-list li + li::before { content: "/"; color: var(--line); }
.breadcrumbs-list a:hover { color: var(--ink); }

/* ---------- 评分条 ---------- */
.score-list { display: grid; gap: 14px; }
.score-row {
  display: grid;
  grid-template-columns: minmax(96px, 132px) 1fr auto;
  align-items: center;
  gap: 12px;
}
.score-label { font-size: 14.5px; color: var(--ink-2); }
.score-bar {
  position: relative;
  height: 10px;
  border-radius: var(--pill);
  background: var(--silver);
  border: 1px solid var(--line);
  overflow: hidden;
}
.score-bar-fill {
  display: block;
  width: 0;
  height: 100%;
  border-radius: var(--pill);
  background: linear-gradient(90deg, #00C48C 0%, #4FD8AE 100%);
  transition: width .6s ease;
}
.score-value { font-family: var(--font-mono); font-size: 14px; font-weight: 700; color: var(--green-deep); }

/* ---------- 对照表 ---------- */
.ledger-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
}
.ledger-table { min-width: 620px; font-size: 15px; }
.ledger-table th,
.ledger-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}
.ledger-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--ink);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  white-space: nowrap;
}
.ledger-table tbody tr:nth-child(even) { background: var(--silver); }
.ledger-table tbody tr:hover { background: var(--amber-soft); }
.ledger-table td.num, .ledger-table th.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.scroll-cue {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--muted);
}
.scroll-cue::after { content: " →"; color: var(--green); }

/* ---------- 提示条 ---------- */
.callout {
  padding: 15px 18px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--ink-2);
  background: var(--silver);
  font-size: 15.5px;
}
.callout--amber { background: var(--amber-soft); border-left-color: var(--amber); }
.callout--green { background: var(--green-soft); border-left-color: var(--green); }
.callout--warn { background: #FBEDEB; border-left-color: var(--rust); }

/* ---------- 时间轴 ---------- */
.timeline { position: relative; padding-left: 26px; border-left: 2px solid var(--line); display: grid; gap: 24px; }
.timeline-item { position: relative; }
.timeline-dot {
  position: absolute;
  left: -34px; top: 7px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--line);
}
.timeline-item.is-current .timeline-dot { background: var(--amber); border-color: var(--amber); }
.timeline-body { font-size: 15.5px; color: #20364F; }

/* ---------- 索引窄轴 ---------- */
.index-rail { display: grid; gap: 22px; grid-template-columns: 1fr; }
.index-list { display: grid; gap: 2px; font-size: 14.5px; }
.index-list a {
  display: block;
  padding: 9px 12px;
  border-left: 2px solid var(--line);
  color: var(--muted);
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}
.index-list a:hover,
.index-list a[aria-current="true"] { color: var(--ink); border-left-color: var(--green); background: var(--silver); }

/* ---------- 标签页 ---------- */
.tabs { display: block; }
.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 24px;
}
.tab {
  padding: 8px 18px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: var(--paper);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-2);
  transition: background-color .16s ease, color .16s ease, border-color .16s ease;
}
.tab:hover { border-color: var(--ink-2); }
.tab[aria-selected="true"] { background: var(--ink); border-color: var(--ink); color: #FFFFFF; }
.tab-panel { padding-top: 2px; }
.tab-panel[hidden] { display: none; }

/* ---------- 图片容器 ---------- */
.figure-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, var(--ink) 0%, var(--ink-2) 58%, var(--ink-3) 100%);
}
.figure-frame img { width: 100%; height: 100%; object-fit: cover; }
.figure-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(255, 255, 255, .05) 0 10px, transparent 10px 22px);
  pointer-events: none;
}
.figure-frame--wide { aspect-ratio: 16 / 9; }
.figure-frame--square { aspect-ratio: 1 / 1; }
.figure-frame--tall { aspect-ratio: 3 / 4; }
.figure-frame--ledger { aspect-ratio: 4 / 3; }
.media-caption { margin-top: 10px; font-size: 13px; color: var(--muted); }

/* ---------- 阅读进度 ---------- */
.reading-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 90;
  pointer-events: none;
  background: transparent;
}
.reading-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--green) 0%, var(--amber) 100%);
  transition: width .12s linear;
}

/* ---------- 显现 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .5s ease, transform .5s ease;
}
.js [data-reveal].is-revealed { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1079px) {
  .header-cta { display: none; }
}
@media (min-width: 700px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 920px) {
  :root { --header-h: 68px; }
  .site-header { border-bottom: 1px solid var(--ink-2); }
  .header-frame { gap: 20px; }
  .brand { padding-right: 20px; border-right: 1px solid rgba(255, 255, 255, .14); }
  .nav-toggle { display: none; }
  .site-nav {
    position: static;
    flex: 1 1 auto;
    max-height: none;
    overflow: visible;
    opacity: 1;
    visibility: visible;
    padding: 0;
    border: 0;
    background: transparent;
  }
  .nav-list { display: flex; align-items: center; gap: 4px; }
  .nav-link {
    padding: 9px 13px;
    border-bottom: 0;
    border-radius: var(--pill);
    font-size: 15px;
  }
  .nav-link[aria-current="page"] {
    background: rgba(0, 196, 140, .16);
    box-shadow: inset 0 -2px 0 var(--green);
    padding-left: 13px;
  }
  .nav-panel-foot { display: none; }
  .frame-meta { display: flex; }
  .split { grid-template-columns: 1.05fr .95fr; gap: 36px; }
  .index-rail { grid-template-columns: 216px minmax(0, 1fr); gap: 36px; }
  .index-list { position: sticky; top: calc(var(--header-h) + 22px); }
  .section { padding: 72px 0; }
  .section--tight { padding: 42px 0; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1.4fr; gap: 34px; }
  .footer-frame { padding: 56px 0 20px; }
}
@media (min-width: 1120px) {
  .header-cta { padding: 10px 22px; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
  .js [data-reveal] { opacity: 1 !important; transform: none !important; }
  .btn:hover, .card:hover { transform: none; }
}