/* Clash Verge Rev 官方文档站 — 机构白皮书风（海军蓝 × 暖金 × 文档栏） */
@import url('https://fonts.googleapis.com/css2?family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=Source+Sans+3:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --navy: #0a2540;
  --navy-mid: #1a3a5c;
  --gold: #b8860b;
  --gold-soft: #f5f0e1;
  --paper: #fafaf8;
  --white: #ffffff;
  --ink: #1c2836;
  --ink-soft: #4a5568;
  --ink-muted: #718096;
  --rule: #d8dee8;
  --accent: #1e5a8e;
  --font-serif: 'Libre Baskerville', 'Noto Serif SC', Georgia, serif;
  --font-sans: 'Source Sans 3', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'IBM Plex Mono', Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.82;
  min-height: 100vh;
}
h1, h2, h3 { font-family: var(--font-serif); font-weight: 700; color: var(--navy); line-height: 1.3; }
a { color: var(--accent); text-decoration: none; transition: 0.2s; }
a:hover { color: var(--gold); }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 32px; }

/* 顶栏 — 双层官方栏 */
.official-bar {
  background: var(--navy);
  color: rgba(255,255,255,0.75);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 8px 16px;
}
.site-header {
  background: var(--white);
  border-bottom: 3px solid var(--gold);
  position: sticky; top: 0; z-index: 200;
  box-shadow: 0 2px 12px rgba(10,37,64,0.06);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1080px; margin: 0 auto; padding: 18px 32px;
  gap: 20px; flex-wrap: wrap;
}
.logo {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-serif); font-size: 1.15rem;
  color: var(--navy); font-weight: 700;
}
.logo img { width: 42px; height: 42px; border-radius: 4px; border: 2px solid var(--rule); }
.logo-sub { font-family: var(--font-mono); font-size: 0.62rem; color: var(--ink-muted); letter-spacing: 0.1em; display: block; margin-top: 2px; }
.nav-links { display: flex; gap: 0; list-style: none; flex-wrap: wrap; }
.nav-links a {
  font-size: 0.86rem; font-weight: 600; color: var(--ink-soft);
  padding: 10px 18px; border-bottom: 2px solid transparent;
}
.nav-links a:hover, .nav-links a.active { color: var(--navy); border-bottom-color: var(--gold); }

/* Hero — 文档封面式 */
.hero { padding: 56px 0 48px; background: var(--white); border-bottom: 1px solid var(--rule); }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.doc-label {
  font-family: var(--font-mono); font-size: 0.72rem;
  color: var(--gold); letter-spacing: 0.14em; text-transform: uppercase;
  margin-bottom: 14px;
}
.hero-badges { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.badge {
  font-size: 0.72rem; font-weight: 600; padding: 4px 12px;
  border: 1px solid var(--rule); color: var(--ink-soft); background: var(--gold-soft);
}
.lead { font-size: 1.02rem; color: var(--ink-soft); margin: 18px 0 26px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-image { border: 1px solid var(--rule); box-shadow: 8px 8px 0 var(--gold-soft); }
.hero-image img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; font-size: 0.88rem; font-weight: 600;
  border-radius: 2px; transition: 0.2s; font-family: var(--font-sans); cursor: pointer; border: none;
}
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--navy-mid); color: var(--white); }
.btn-outline { background: transparent; color: var(--navy); border: 2px solid var(--navy); }
.btn-outline:hover { background: var(--navy); color: var(--white); }
.btn-gold { background: var(--gold); color: var(--white); }
.btn-gold:hover { filter: brightness(1.1); color: var(--white); }

.section { padding: 52px 0; }
.section-alt { background: var(--white); border-block: 1px solid var(--rule); }
.section-header { margin-bottom: 32px; padding-bottom: 16px; border-bottom: 1px solid var(--rule); }
.section-header p { color: var(--ink-soft); margin-top: 10px; }
.section-num {
  font-family: var(--font-mono); font-size: 0.68rem;
  color: var(--gold); letter-spacing: 0.12em; margin-bottom: 8px;
}

/* 官方数据表 */
.official-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--rule); background: var(--white);
}
.official-stat {
  padding: 28px 20px; text-align: center;
  border-right: 1px solid var(--rule);
}
.official-stat:last-child { border-right: none; }
.official-stat .num { font-family: var(--font-serif); font-size: 2rem; color: var(--navy); }
.official-stat .lbl { font-family: var(--font-mono); font-size: 0.65rem; color: var(--ink-muted); margin-top: 6px; letter-spacing: 0.06em; }

/* 文档卡片 */
.doc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.doc-card {
  background: var(--white); border: 1px solid var(--rule);
  padding: 0; transition: 0.2s;
}
.doc-card:hover { box-shadow: 0 8px 24px rgba(10,37,64,0.08); border-color: var(--gold); }
.doc-card img { width: 100%; height: 180px; object-fit: cover; }
.doc-card.wide { grid-column: span 2; }
.doc-card.wide img { height: 240px; }
.doc-card-body { padding: 22px; }
.doc-card .tag { font-family: var(--font-mono); font-size: 0.65rem; color: var(--gold); letter-spacing: 0.08em; }
.doc-card h3 { font-size: 1.05rem; margin: 8px 0; }
.doc-card p { font-size: 0.88rem; color: var(--ink-soft); }

/* 条文式特性 */
.clause-list { display: flex; flex-direction: column; gap: 0; border: 1px solid var(--rule); }
.clause-item {
  display: grid; grid-template-columns: 80px 1fr; gap: 20px;
  padding: 24px 28px; border-bottom: 1px solid var(--rule); background: var(--white);
}
.clause-item:last-child { border-bottom: none; }
.clause-num { font-family: var(--font-mono); font-size: 0.8rem; color: var(--gold); font-weight: 500; }
.clause-item h3 { font-size: 1rem; margin-bottom: 6px; font-family: var(--font-sans); font-weight: 600; }
.clause-item p { font-size: 0.9rem; color: var(--ink-soft); }

/* 表格 */
.data-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; background: var(--white); border: 1px solid var(--rule); }
.data-table th, .data-table td { padding: 14px 18px; text-align: left; border: 1px solid var(--rule); }
.data-table th { background: var(--navy); color: var(--white); font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500; letter-spacing: 0.04em; }
.data-table td { color: var(--ink-soft); }
.data-table tr:nth-child(even) td { background: var(--gold-soft); }

/* 平台下载 */
.platform-row {
  display: grid; grid-template-columns: 200px 1fr; gap: 0;
  border: 1px solid var(--rule); margin-bottom: 20px; background: var(--white);
}
.platform-row img { width: 100%; height: 100%; min-height: 200px; object-fit: cover; }
.platform-info { padding: 28px; }
.platform-info h3 { margin-bottom: 8px; }
.platform-info p { color: var(--ink-soft); font-size: 0.9rem; margin-bottom: 14px; }
.spec-line { font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-muted); margin-bottom: 16px; line-height: 1.7; }

/* 文章 */
.breadcrumb { font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-muted); padding: 16px 0; }
.article-hero { padding: 40px 0 32px; background: var(--white); border-bottom: 1px solid var(--rule); }
.article-meta { font-family: var(--font-mono); font-size: 0.72rem; color: var(--ink-muted); margin-bottom: 12px; }
.article-content { max-width: 720px; }
.article-content h2 { margin: 32px 0 12px; font-size: 1.35rem; }
.article-content h3 { margin: 22px 0 8px; font-size: 1.05rem; font-family: var(--font-sans); font-weight: 600; }
.article-content p { color: var(--ink-soft); margin-bottom: 14px; }
.article-content ul, .article-content ol { color: var(--ink-soft); margin: 0 0 14px 22px; }
.code-block {
  font-family: var(--font-mono); font-size: 0.8rem; background: var(--navy);
  color: #e2e8f0; padding: 18px 22px; margin: 18px 0; overflow-x: auto;
  border-left: 4px solid var(--gold); white-space: pre-wrap; line-height: 1.55;
}

.faq-block { border: 1px solid var(--rule); background: var(--white); }
.faq-item { padding: 22px 28px; border-bottom: 1px solid var(--rule); }
.faq-item:last-child { border-bottom: none; }
.faq-item h3 { font-size: 0.98rem; font-family: var(--font-sans); font-weight: 600; margin-bottom: 8px; }
.faq-item p { font-size: 0.9rem; color: var(--ink-soft); }

.cta-official {
  background: var(--navy); color: var(--white); padding: 48px;
  text-align: center; border-radius: 2px;
}
.cta-official h2 { color: var(--white); margin-bottom: 12px; }
.cta-official p { color: rgba(255,255,255,0.75); margin-bottom: 24px; max-width: 520px; margin-inline: auto; }

.site-footer {
  background: var(--navy); color: rgba(255,255,255,0.7);
  padding: 48px 0 28px; margin-top: 48px; font-size: 0.88rem;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-grid h4 { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; color: var(--gold); margin-bottom: 14px; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { color: rgba(255,255,255,0.65); }
.footer-grid a:hover { color: var(--white); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding-top: 20px; font-family: var(--font-mono); font-size: 0.68rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

.cross-ref {
  margin: 28px 0; padding: 20px 24px;
  background: var(--gold-soft); border: 1px solid var(--rule);
  border-left: 4px solid var(--gold); font-size: 0.9rem; color: var(--ink-soft);
}
.cross-ref strong { color: var(--navy); display: block; margin-bottom: 8px; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; }
.verify-output {
  margin: 16px 0; padding: 16px 20px;
  background: var(--white); border: 1px dashed var(--gold);
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-soft); line-height: 1.6;
}
.verify-output em { color: var(--gold); font-style: normal; font-weight: 600; }

@media (max-width: 900px) {
  .hero-inner, .doc-grid, .footer-grid { grid-template-columns: 1fr; }
  .doc-card.wide { grid-column: span 1; }
  .official-stats { grid-template-columns: repeat(2, 1fr); }
  .official-stat:nth-child(2) { border-right: none; }
  .platform-row { grid-template-columns: 1fr; }
  .clause-item { grid-template-columns: 1fr; }
}