/* 全站布局 — 颜色变量见 lib/theme.css */
:root {
  --sl-max: 1080px;
}

body.site-page {
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--sl-bg);
  color: var(--sl-text);
  line-height: 1.6;
  min-height: 100vh;
}

.site-shell {
  position: relative;
  z-index: 1;
  max-width: var(--sl-max);
  margin: 0 auto;
  padding: 12px 20px 56px;
}

.site-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0 16px;
  border-bottom: 1px solid var(--sl-border);
  margin-bottom: 20px;
}

.site-brand {
  font-size: 1rem;
  font-weight: 700;
  color: var(--sl-text);
  text-decoration: none;
  white-space: nowrap;
}

.site-brand span { color: var(--sl-accent); }

.site-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
  flex: 1;
}

.site-tabs a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  color: var(--sl-muted);
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
}

.site-tabs a:hover { color: var(--sl-text); background: var(--sl-surface2); }
.site-tabs a.active {
  color: var(--sl-accent);
  background: #3b82f618;
  font-weight: 600;
}

.site-hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  margin-bottom: 28px;
  padding: 28px 0 8px;
}

.site-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.site-hero .lead {
  color: var(--sl-muted);
  font-size: 0.95rem;
  max-width: 520px;
  line-height: 1.7;
}

.site-hero--lead-only {
  display: block;
  padding: 20px 0 4px;
  margin-bottom: 20px;
}
.site-hero--lead-only .lead {
  max-width: none;
  margin: 0;
  font-size: 0.98rem;
}

.site-hero-visual {
  width: 140px;
  height: 140px;
  border-radius: 20px;
  background: linear-gradient(145deg, #3b82f622, #10b98118);
  border: 1px solid var(--sl-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  flex-shrink: 0;
}

.site-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.site-pill {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--sl-border);
  background: var(--sl-surface);
  color: var(--sl-text);
  transition: transform 0.12s, border-color 0.15s, background 0.15s;
}

.site-pill:hover { border-color: var(--sl-accent); transform: translateY(-1px); }
.site-pill.primary {
  background: var(--sl-accent);
  border-color: var(--sl-accent);
  color: #fff;
}
.site-pill.primary:hover { background: #2563eb; }

.site-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.site-stat {
  flex: 1;
  min-width: 100px;
  background: var(--sl-surface);
  border: 1px solid var(--sl-border);
  border-radius: var(--sl-radius);
  padding: 14px 16px;
  text-align: center;
}

.site-stat .n { font-size: 1.5rem; font-weight: 800; color: var(--sl-accent); }
.site-stat .l { font-size: 0.75rem; color: var(--sl-muted); margin-top: 2px; }

a.site-stat-link {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.12s, box-shadow 0.15s;
}
a.site-stat-link:hover {
  border-color: var(--sl-accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--theme-shadow, rgba(0, 0, 0, 0.08));
}

.site-section-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--sl-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 28px 0 14px;
}

.site-module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}

.site-module-grid.wide {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

.site-module {
  display: flex;
  flex-direction: column;
  background: var(--sl-surface);
  border: 1px solid var(--sl-border);
  border-radius: var(--sl-radius);
  padding: 18px 18px 14px;
  text-decoration: none;
  color: inherit;
  min-height: 120px;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.12s;
}

.site-module:hover {
  border-color: var(--sl-accent);
  box-shadow: 0 8px 24px var(--theme-shadow, #00000030);
  transform: translateY(-2px);
}

.site-module.featured { border-color: #10b98155; }
.site-module.featured:hover { border-color: var(--sl-green); }

.site-module .mod-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--sl-text);
}

.site-module .mod-desc {
  font-size: 0.82rem;
  color: var(--sl-muted);
  flex: 1;
  line-height: 1.5;
}

.site-module .mod-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--sl-border);
  font-size: 0.78rem;
  color: var(--sl-muted);
}

.site-module .mod-foot .arrow {
  color: var(--sl-accent);
  font-size: 1.1rem;
  font-weight: 700;
}

.site-module .mod-tag {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.68rem;
  font-weight: 700;
  background: var(--sl-surface2);
  color: var(--sl-muted);
}

.site-module .mod-tag.hot { background: #f59e0b22; color: #fcd34d; }

/* 专业版章节目录 */
.site-chapter { margin-bottom: 28px; }

.site-chapter-head {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--sl-muted);
  margin-bottom: 12px;
  padding-left: 12px;
  border-left: 3px solid var(--sl-green);
}

.site-section-block {
  background: var(--sl-surface);
  border: 1px solid var(--sl-border);
  border-radius: var(--sl-radius);
  margin-bottom: 12px;
  overflow: hidden;
}

.site-section-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--sl-border);
}

.site-section-top h3 {
  font-size: 0.95rem;
  font-weight: 700;
}

.site-section-top .sec-id {
  color: var(--sl-green);
  margin-right: 8px;
}

.site-type-tag {
  font-size: 0.68rem;
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 700;
  white-space: nowrap;
}

.site-type-jupyter { background: #3b82f633; color: #93c5fd; }
.site-type-doc { background: #7c3aed33; color: #c4b5fd; }
.site-type-sheet { background: #05966933; color: #6ee7b7; }

.site-section-range {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
  font-size: 0.78rem;
  color: var(--sl-muted);
  background: #00000018;
}

.site-section-range .arrow { color: var(--sl-accent); font-weight: 700; }

.site-task-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
  gap: 8px;
  padding: 14px 18px 18px;
}

.site-task {
  padding: 12px 8px;
  border: 1px solid var(--sl-border);
  border-radius: 10px;
  background: var(--sl-surface2);
  color: var(--sl-text);
  text-align: center;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}

.site-task:hover { border-color: var(--sl-green); background: #10b98115; }
.site-task.trial { border-color: #f59e0b; }
.site-task .sub {
  display: block;
  font-size: 0.62rem;
  color: var(--sl-muted);
  font-weight: 400;
  margin-top: 2px;
}

.site-footer {
  margin-top: 36px;
  padding-top: 16px;
  border-top: 1px solid var(--sl-border);
  text-align: center;
  font-size: 0.8rem;
  color: var(--sl-muted);
}

.site-footer a { color: var(--sl-accent); text-decoration: none; }

.hidden { display: none !important; }

@media (max-width: 720px) {
  .site-shell { padding: 10px 14px 48px; }
  .site-hero { grid-template-columns: 1fr; }
  .site-hero-visual { display: none; }
  .site-topbar { flex-wrap: wrap; }
  .site-tabs { order: 3; width: 100%; justify-content: flex-start; overflow-x: auto; }
  .site-module-grid { grid-template-columns: 1fr; }
}