/* ============================================================
   AgentScopeDoc — manual.css
   视觉语言：黑曜石 × 熔金 (Obsidian × Molten Gold)
   三栏布局 + 中英三态 (as-lang = mixed|zh|en) + 明暗主题
   ============================================================ */

/* ---------- 1. CSS 变量 ---------- */
:root {
  --font-sans: "Segoe UI", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", -apple-system, sans-serif;
  --font-mono: "Cascadia Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  --topbar-h: 58px;
  --sidebar-w: 286px;
  --toc-w: 232px;
}
:root, :root[data-theme="light"] {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --surface-2: #f1efe9;
  --bg-code: #efede7;
  --text: #1c1e24;
  --text-soft: #3d4048;
  --muted: #6d6f77;
  --faint: #979a9f;
  --border: #e4dfd2;
  --border-strong: #cdc6b4;
  --accent: #96590b;
  --accent-2: #b8860b;
  --accent-soft: #f6ecd6;
  --accent-text: #8a5a0a;
  --accent-hover: #7c4d07;
  --on-accent: #ffffff;
  --green: #2f7d4f; --green-soft: #e5f2ea;
  --red: #b3442e;  --red-soft: #f7e7e2;
  --amber: #b06a2c; --purple: #6b4fa0;
  --shadow-sm: 0 1px 3px rgba(28,30,36,.08);
  --shadow-md: 0 4px 16px rgba(28,30,36,.10);
  --topbar-bg: rgba(246,245,241,.86);
  --metal: linear-gradient(160deg,#3a4152,#14181f);
  --gold: linear-gradient(135deg,#f2c568,#b8860b);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0a0d13;
  --surface: #121722;
  --surface-2: #1a2130;
  --bg-code: #0d1119;
  --text: #e9e6de;
  --text-soft: #c9c5b9;
  --muted: #a2a9b6;
  --faint: #767e8d;
  --border: #262f3e;
  --border-strong: #3a4760;
  --accent: #e6b04a;
  --accent-2: #f6cd7a;
  --accent-soft: #2b2413;
  --accent-text: #ecc06a;
  --accent-hover: #f6d07e;
  --on-accent: #14181f;
  --green: #55c08a; --green-soft: #14291e;
  --red: #e8765a;  --red-soft: #2b1612;
  --amber: #dfa03a; --purple: #a68fd8;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.55);
  --shadow-md: 0 6px 24px rgba(0,0,0,.62);
  --topbar-bg: rgba(10,13,19,.82);
  --metal: linear-gradient(160deg,#2e3646,#0b0e14);
  --gold: linear-gradient(135deg,#f6cd7a,#a97a0e);
  color-scheme: dark;
}

/* ---------- 2. 基础 ---------- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
button, a, input, select, textarea { touch-action: manipulation; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.62;
}
a { color: var(--link, var(--accent-text)); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
code, kbd, pre, samp { font-family: var(--font-mono); font-size: .92em; }
code { background: var(--bg-code); color: var(--code-text, var(--accent-2)); padding: .12em .35em; border-radius: 4px; }
pre { background: var(--bg-code); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; overflow: auto; line-height: 1.5; }
pre code { background: none; padding: 0; color: var(--text-soft); }
kbd { background: var(--surface-2); border: 1px solid var(--border-strong); border-bottom-width: 2px; border-radius: 5px; padding: .08em .45em; font-size: .8em; }
mark { background: var(--accent-soft); color: var(--accent-text); border-radius: 2px; padding: 0 1px; }
img { max-width: 100%; }
h1, h2, h3, h4 { line-height: 1.35; color: var(--text); font-weight: 650; }
h1 { font-size: clamp(24px, 3.2vw, 34px); }
h2 { font-size: clamp(19px, 2.1vw, 23px); margin: 2.2em 0 .7em; }
h3 { font-size: 17px; margin: 1.6em 0 .5em; }
h4 { font-size: 14.5px; margin: 1.2em 0 .4em; text-transform: none; }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--on-accent); padding: 8px 14px; z-index: 200; }
.skip-link:focus { left: 0; }

/* 抽屉遮罩（≤1180px 时由 JS 创建） */
.nav-scrim {
  position: fixed; inset: 0; z-index: 85;
  background: rgba(4,8,14,.45);
  -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
  opacity: 0; pointer-events: none; transition: opacity .25s ease;
}
body.nav-open .nav-scrim { opacity: 1; pointer-events: auto; }

/* ---------- 3. 三栏布局 ---------- */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--toc-w);
  max-width: 1600px;
  margin: var(--topbar-h) auto 0;
  padding: 24px 24px 60px;
  gap: 28px;
}
.main { min-width: 0; }

/* ---------- 4. 顶栏 ---------- */
.topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--topbar-h);
  display: flex; align-items: center; gap: 14px;
  padding: 0 22px;
  background: var(--topbar-bg);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); flex-shrink: 0; }
.brand:hover { text-decoration: none; color: var(--text); }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--metal);
  color: #f2c568; font-weight: 750; font-size: 15px; letter-spacing: .5px;
  border: 1px solid rgba(242,197,104,.4);
  box-shadow: inset 0 0 12px rgba(242,197,104,.18), var(--shadow-sm);
}
.brand-mark.large { width: 58px; height: 58px; font-size: 24px; border-radius: 14px; }
.brand-text strong { display: block; font-size: 15px; line-height: 1.2; }
.brand-text small { display: block; color: var(--muted); font-size: 11px; line-height: 1.2; }
.product-nav { display: flex; gap: 2px; margin-left: 8px; overflow-x: auto; scrollbar-width: none; }
.product-nav::-webkit-scrollbar { display: none; }
.product-link {
  padding: 7px 12px; border-radius: 8px; color: var(--muted); font-size: 13.5px; white-space: nowrap;
}
.product-link:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }
.product-link.active { color: var(--accent-text); background: var(--accent-soft); font-weight: 650; }
.topbar-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; flex-shrink: 0; }
.icon-button {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text-soft); font-size: 15px; cursor: pointer;
}
.icon-button:hover { border-color: var(--border-strong); background: var(--surface-2); }
.search-trigger {
  display: inline-flex; align-items: center; gap: 8px;
  height: 36px; padding: 0 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface); color: var(--muted); font-size: 13px; cursor: pointer; font-family: var(--font-sans);
}
.search-trigger:hover { border-color: var(--border-strong); color: var(--text); }
.search-trigger.large { height: 48px; padding: 0 20px; font-size: 15px; min-width: 320px; justify-content: space-between; }
.search-icon { font-size: 15px; }
.lang-switch { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: var(--surface); }
.lang-switch button {
  border: 0; background: transparent; color: var(--muted); font-size: 12.5px; font-weight: 600;
  padding: 7px 11px; cursor: pointer; font-family: var(--font-sans);
}
.lang-switch button + button { border-left: 1px solid var(--border); }
.lang-switch button:hover { color: var(--text); }
.lang-switch button.active { background: var(--accent); color: var(--on-accent); }

/* ---------- 5. 侧边栏 ---------- */
.sidebar {
  position: sticky; top: calc(var(--topbar-h) + 24px); align-self: start;
  max-height: calc(100vh - var(--topbar-h) - 40px);
  overflow: hidden auto;
  border-right: 1px solid var(--border);
  padding: 2px 14px 26px 0;
  font-size: 13.5px;
}
.sidebar-toggle {
  display: flex; align-items: center; gap: 8px; width: 100%;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface); color: var(--muted); font-size: 12.5px;
  padding: 7px 10px; margin-bottom: 12px; cursor: pointer; font-family: var(--font-sans);
}
.sidebar-toggle:hover { color: var(--text); border-color: var(--border-strong); }
.sidebar-toggle-icon { font-size: 14px; }
.sidebar-site { font-weight: 700; color: var(--text); font-size: 13px; padding: 2px 8px 10px; }
.sidebar-links, .sidebar-types { display: flex; flex-direction: column; gap: 1px; padding-bottom: 10px; }
.sidebar-links a, .sidebar-types a {
  padding: 5px 8px; border-radius: 6px; color: var(--muted); display: flex; align-items: center; gap: 8px;
}
.sidebar-links a:hover, .sidebar-types a:hover { color: var(--text); background: var(--surface-2); text-decoration: none; }
.sidebar-links a.active, .sidebar-types a.active { color: var(--accent-text); background: var(--accent-soft); font-weight: 600; }
.sidebar-title { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--faint); padding: 12px 8px 6px; }
.domain-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--dot, var(--accent)); flex-shrink: 0; }
/* 折叠 rail */
html[data-sidebar="collapsed"] .layout { grid-template-columns: 58px minmax(0,1fr) var(--toc-w); }
html[data-sidebar="collapsed"] .sidebar { padding-right: 6px; border-right-color: var(--border); }
html[data-sidebar="collapsed"] .sidebar .sidebar-body { display: none; }
html[data-sidebar="collapsed"] .sidebar-toggle { justify-content: center; }
html[data-sidebar="collapsed"] .sidebar-toggle-text { display: none; }
.menu-toggle { display: none; }

/* ---------- 6. 右侧 TOC ---------- */
.toc {
  position: sticky; top: calc(var(--topbar-h) + 24px); align-self: start;
  max-height: calc(100vh - var(--topbar-h) - 40px); overflow: auto;
  font-size: 13px; padding-left: 18px; border-left: 1px solid var(--border);
}
.toc-title { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--faint); padding: 2px 0 10px; }
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc a { display: block; padding: 4px 10px; border-left: 2px solid transparent; color: var(--muted); }
.toc a:hover { color: var(--text); text-decoration: none; }
.toc a.active { color: var(--accent-text); border-left-color: var(--accent); background: linear-gradient(90deg, var(--accent-soft), transparent 70%); font-weight: 600; }
.toc li li a { padding-left: 22px; font-size: 12.5px; }

/* ---------- 7. 三态语言 ---------- */
html[data-lang="zh"] .ui-en, html[data-lang="en"] .ui-zh { display: none; }
html[data-lang="zh"] .lang-en, html[data-lang="en"] .lang-zh { display: none; }
/* 扩展：无英文版的正文块（lang-zh.only）在纯英文模式仍显示原文 + EN 徽标 */
html[data-lang="en"] .lang-zh.only { display: block; opacity: .82; }
html[data-lang="en"] .lang-zh.only::before {
  content: "EN"; display: inline-block; margin-right: .6em; padding: 0 .45em;
  font-size: .68em; font-weight: 700; letter-spacing: .04em; vertical-align: .12em;
  color: var(--accent-text); border: 1px solid var(--accent-2); border-radius: 4px;
}
html[data-lang="mixed"] .lang-en { color: var(--muted); }
.lang-inline.lang-zh + .lang-inline.lang-en::before { content: " · "; color: var(--faint); }
.lang-block.lang-zh, .lang-block.lang-en { display: block; }
html[data-lang="mixed"] .lang-block.lang-en { color: var(--muted); font-size: .95em; }

/* ---------- 8. 面包屑 / tabs / footer ---------- */
.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent-text); }
.breadcrumb .sep { margin: 0 8px; color: var(--faint); }
.breadcrumb .current { color: var(--text); font-weight: 600; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 22px; }
.tabs a {
  padding: 9px 16px; color: var(--muted); font-size: 14px; border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tabs a:hover { color: var(--text); text-decoration: none; }
.tabs a.active { color: var(--accent-text); border-bottom-color: var(--accent); font-weight: 650; }
.footer { border-top: 1px solid var(--border); margin-top: 46px; padding: 20px 0 6px; font-size: 13px; color: var(--muted); }
.footer .muted { color: var(--faint); margin-top: 4px; }

/* ---------- 9. 正文排版 ---------- */
.article { min-width: 0; }
.article > *:first-child { margin-top: 0; }
.prose h2 { padding-top: .4em; }
.prose p, .prose ul, .prose ol { margin: .7em 0; max-width: 76ch; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: .3em 0; }
.lede { font-size: 16.5px; color: var(--text-soft); max-width: 76ch; }
.type-kicker {
  font-size: 11.5px; text-transform: uppercase; letter-spacing: .14em;
  color: var(--accent-text); font-weight: 700; margin-bottom: 10px;
}
.muted { color: var(--muted); }
.muted a { color: var(--accent-text); }

/* ---------- 10. 表格 ---------- */
.summary-table { width: 100%; border-collapse: collapse; font-size: 13.5px; table-layout: fixed; }
.summary-table th, .summary-table td {
  text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: top;
  overflow-wrap: break-word;
}
.summary-table th { background: var(--surface-2); color: var(--text-soft); font-weight: 650; font-size: 12.5px; }
.summary-table tr:hover td { background: var(--surface-2); }
.name-cell { width: 30%; }
.kind-cell { width: 10%; color: var(--muted); font-size: 12.5px; }
.artifact-cell { width: 16%; color: var(--muted); font-size: 12px; }
.summary-cell { color: var(--text-soft); }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.summary-table td a code { background: none; color: var(--accent-text); padding: 0; }

/* ---------- 11. 通用组件 ---------- */
.button, .button-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 18px; border-radius: 9px; font-size: 14px; font-weight: 600; cursor: pointer;
  border: 1px solid var(--border-strong); background: var(--surface); color: var(--text);
  font-family: var(--font-sans);
}
.button:hover, .button-link:hover { background: var(--accent-soft); color: var(--accent-text); text-decoration: none; }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.button.primary:hover { background: var(--accent-hover); color: var(--on-accent); }
.button-link { text-decoration: none; }
.count-badge {
  display: inline-block; padding: 1px 10px; border-radius: 999px; font-size: 12px; font-weight: 650;
  background: var(--accent-soft); color: var(--accent-text); vertical-align: .15em; margin-left: 6px;
}
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 650; background: var(--surface-2); color: var(--muted); }
.sev-badge { display: inline-block; padding: 1px 9px; border-radius: 6px; font-size: 11px; font-weight: 750; }
.scenario[data-severity="P0"] .sev-badge { background: var(--red); color: #fff; }
.scenario[data-severity="P1"] .sev-badge { background: var(--amber); color: #fff; }
.scenario[data-severity="P2"] .sev-badge { background: var(--blue, #35608f); color: #fff; }
.empty-state {
  border: 1.5px dashed var(--border-strong); border-radius: 12px; padding: 34px; text-align: center; color: var(--muted);
}
.api-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.api-chip {
  display: inline-flex; align-items: center; gap: 4px; padding: 5px 12px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text-soft); font-size: 12.5px;
}
.api-chip:hover { border-color: var(--accent-2); color: var(--accent-text); text-decoration: none; }
.api-chip.muted { opacity: .5; }
.api-chip code { background: none; padding: 0; }

/* ---------- 12. 首页 hero / portal ---------- */
.landing-hero { text-align: center; padding: 34px 0 26px; }
.landing-hero .brand-xl { display: flex; justify-content: center; margin-bottom: 18px; }
.landing-hero h1 { margin: 8px 0 12px; }
.landing-hero .lede { margin: 0 auto 22px; }
.landing-search { display: flex; justify-content: center; margin-top: 6px; }
.stat-grid { display: flex; flex-wrap: wrap; gap: 14px; margin: 22px 0 6px; justify-content: center; }
.stat-grid > div {
  min-width: 128px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 18px; text-align: center;
}
.stat-grid strong { display: block; font-size: 26px; font-variant-numeric: tabular-nums; color: var(--accent-text); line-height: 1.15; }
.stat-grid span { font-size: 12px; color: var(--muted); }
.hero-actions { display: flex; gap: 12px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }
.portal-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; margin: 30px 0 12px; }
.portal-card {
  display: block; background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 22px 24px; color: var(--text); transition: transform .15s ease, box-shadow .15s ease;
}
.portal-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); text-decoration: none; color: var(--text); }
.portal-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 12px; font-weight: 750; font-size: 17px;
  background: var(--gold); color: var(--on-accent); margin-bottom: 12px;
  box-shadow: inset 0 0 10px rgba(255,255,255,.35);
}
.portal-card h2 { margin: 0 0 4px; font-size: 19px; }
.portal-version { font-size: 12px; color: var(--faint); margin-bottom: 6px; font-family: var(--font-mono); }
.portal-stats { font-size: 13px; color: var(--accent-text); font-weight: 600; margin-bottom: 8px; }
.portal-card p { font-size: 13.5px; color: var(--muted); margin: 0 0 12px; }
.portal-cta { font-size: 13.5px; font-weight: 650; color: var(--accent-text); }

/* ---------- 13. 搜索弹窗 ---------- */
.search-overlay {
  position: fixed; inset: 0; z-index: 300; background: rgba(10,12,18,.55);
  display: flex; justify-content: center; align-items: flex-start; padding: 12vh 20px 20px;
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
}
.search-overlay[hidden] { display: none; }
.search-dialog {
  width: min(680px, 100%); background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: 16px; box-shadow: var(--shadow-md); overflow: hidden;
}
.search-box { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.search-box .search-icon { color: var(--faint); }
.search-box input {
  flex: 1; border: 0; outline: 0; background: transparent; color: var(--text);
  font-size: 16px; font-family: var(--font-sans);
}
.search-results { max-height: 56vh; overflow: auto; padding: 8px; }
.search-result { display: block; padding: 10px 12px; border-radius: 10px; color: var(--text); }
.search-result:hover, .search-result.active { background: var(--surface-2); text-decoration: none; }
.sr-head { display: flex; align-items: baseline; gap: 10px; }
.sr-title { font-weight: 650; font-size: 14.5px; }
.sr-kind { font-size: 11px; color: var(--faint); background: var(--surface-2); border-radius: 5px; padding: 1px 7px; border: 1px solid var(--border); }
.sr-body { font-size: 12.5px; color: var(--muted); margin-top: 2px; }
.search-empty { padding: 30px; text-align: center; color: var(--muted); }
.search-hint {
  display: flex; gap: 16px; padding: 10px 16px; border-top: 1px solid var(--border);
  font-size: 12px; color: var(--faint);
}
.search-hint kbd { margin-right: 4px; }

/* ---------- 14. 图谱区（knowledge） ---------- */
.knowledge-hero, .domain-hero {
  position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 26px 28px; overflow: hidden;
}
.knowledge-hero::before, .domain-hero::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px 180px at 18% -20%, color-mix(in srgb, var(--domain, var(--accent)) 16%, transparent), transparent 70%);
  pointer-events: none;
}
.domain-hero { border-left: 4px solid var(--domain, var(--accent)); }
.domain-kicker { font-size: 11.5px; text-transform: uppercase; letter-spacing: .13em; font-weight: 700; color: var(--domain, var(--accent-text)); margin-bottom: 8px; }
.knowledge-stats, .domain-stats, .learn-stats { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.knowledge-stats > div, .domain-stats > div, .learn-stats > div {
  min-width: 112px; background: var(--surface-2); border-radius: 10px; padding: 10px 14px;
}
.knowledge-stats strong, .domain-stats strong, .learn-stats strong { display: block; font-size: 21px; font-variant-numeric: tabular-nums; color: var(--accent-text); line-height: 1.2; }
.knowledge-stats span, .domain-stats span, .learn-stats span { font-size: 11px; color: var(--muted); }
.graph-section { margin-top: 26px; }
.graph-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin: 4px 0 12px; }
.graph-toolbar h2 { margin: 0; }
.graph-filter {
  min-width: 220px; padding: 8px 12px; border-radius: 8px; border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text); font-size: 13.5px; font-family: var(--font-sans); outline: 0;
}
.graph-filter:focus { border-color: var(--accent); }
.graph-legend { display: inline-flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); margin-left: auto; }
.legend-python, .legend-java { display: inline-block; width: 12px; height: 12px; border-radius: 50%; background: #e0a83c; }
.legend-java { border-radius: 3px; background: #c94f3d; }
.graph-canvas {
  position: relative; height: 480px; border: 1px solid var(--border); border-radius: 14px;
  background-color: var(--surface); cursor: grab; touch-action: none; overflow: hidden;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 32px 32px;
}
.graph-canvas.knowledge-graph-canvas { height: 520px; }
.graph-canvas canvas { display: block; width: 100%; height: 100%; }
.domain-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; margin-top: 16px; }
.domain-card {
  display: block; background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--domain);
  border-radius: 12px; padding: 16px 18px; color: var(--text); transition: transform .14s ease, box-shadow .14s ease;
}
.domain-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); text-decoration: none; color: var(--text); }
.domain-card-head { display: flex; align-items: center; gap: 9px; }
.domain-card-head h3 { margin: 0; font-size: 15.5px; }
.domain-card > p { font-size: 13px; color: var(--muted); margin: 8px 0 12px; min-height: 2.6em; }
.domain-card-stats { display: flex; flex-wrap: wrap; gap: 6px; }
.domain-card-stats span { font-size: 11px; padding: 2px 9px; border-radius: 999px; background: var(--surface-2); color: var(--muted); }
.domain-matrix { margin-top: 16px; }
.domain-steps { margin: 10px 0 16px; padding-left: 1.4em; }
.domain-points li::marker, .domain-pitfalls li::marker { color: var(--domain, var(--accent)); }
.domain-pitfalls li::marker { color: var(--amber); }
.domain-learn { margin-top: 16px; }
.api-section { margin-top: 30px; }
.api-group { border: 1px solid var(--border); border-radius: 10px; margin: 10px 0; background: var(--surface); }
.api-group summary {
  list-style: none; padding: 11px 16px; background: var(--surface-2); cursor: pointer; border-radius: 10px;
  font-size: 13.5px; display: flex; align-items: center; gap: 10px;
}
.api-group summary::-webkit-details-marker { display: none; }
.api-group summary::before { content: "▸"; color: var(--faint); font-size: 11px; transition: transform .15s ease; }
.api-group[open] summary::before { transform: rotate(90deg); }
.api-group summary code { background: none; }
.api-group summary .count { margin-left: auto; font-size: 11.5px; padding: 1px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-text); font-weight: 700; }
.api-group .summary-table { border-top: 1px solid var(--border); }
.compare-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 14px 0; }
.map-toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 14px 0; }
.map-toolbar input, .map-toolbar select {
  padding: 8px 12px; border-radius: 8px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); font-size: 13.5px; font-family: var(--font-sans);
}
.map-count { margin-left: auto; font-size: 12.5px; color: var(--muted); }
.map-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
.api-map-table { min-width: 780px; }
tr[hidden] { display: none; }

/* ---------- 15. 闯关 / 学习组件 ---------- */
.learn-hero {
  position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 26px 28px; overflow: hidden;
}
.learn-hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(480px 200px at 80% -30%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%), radial-gradient(380px 180px at 10% 110%, color-mix(in srgb, var(--purple) 12%, transparent), transparent 70%); pointer-events: none; }
.learn-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.path-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 14px; margin-top: 16px; }
.unit-card {
  position: relative; display: block; background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 18px; color: var(--text); transition: transform .14s ease, box-shadow .14s ease;
}
.unit-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); text-decoration: none; color: var(--text); }
.unit-card.done { border-color: var(--green); }
.unit-card.done .progress-bar i { background: linear-gradient(90deg, var(--green), var(--green)); }
.unit-index { position: absolute; top: 12px; right: 14px; font-size: 12px; color: var(--faint); font-variant-numeric: tabular-nums; font-family: var(--font-mono); }
.unit-domain { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.unit-card h3 { margin: 10px 0 4px; font-size: 16px; }
.unit-card p { font-size: 13px; color: var(--muted); margin: 0 0 12px; }
.unit-progress { display: block; }
.progress-bar { display: block; height: 5px; border-radius: 999px; background: var(--bg-code); overflow: hidden; }
.progress-bar i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--purple)); }
.progress-label { display: flex; justify-content: space-between; font-size: 11.5px; color: var(--faint); margin-top: 5px; }
.progress-label span[data-unit-label] { color: var(--muted); }
.lesson-section { margin-top: 30px; }
.unit-meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.unit-side-no { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 6px; background: var(--accent-soft); color: var(--accent-text); font-weight: 700; font-size: 12px; }

/* 闪卡 */
.flashcard-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; margin-top: 16px; }
.flashcard { perspective: 900px; border: 0; background: none; padding: 0; cursor: pointer; text-align: left; font-family: var(--font-sans); }
.flashcard-inner { position: relative; height: 168px; transform-style: preserve-3d; transition: transform .45s ease; }
.flashcard.flipped .flashcard-inner { transform: rotateY(180deg); }
.flashcard-face {
  position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 8px;
  padding: 18px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font-size: 14.5px; text-align: center;
}
.flashcard-back { transform: rotateY(180deg); background: linear-gradient(150deg, var(--accent-soft), var(--surface)); border-color: var(--accent-2); color: var(--accent-text); }
.fc-hint { position: absolute; right: 12px; bottom: 8px; font-size: 10.5px; color: var(--faint); }

/* 答题 */
.quiz { display: flex; flex-direction: column; gap: 18px; margin-top: 16px; }
.quiz-q { border: 1px solid var(--border); border-radius: 12px; background: var(--surface); padding: 16px 18px; }
.quiz-q.mastered { border-color: var(--green); box-shadow: 0 0 0 1px var(--green); }
.quiz-stem { display: flex; gap: 10px; font-weight: 600; font-size: 14.5px; align-items: baseline; }
.q-no { color: var(--faint); font-family: var(--font-mono); font-size: 12px; }
.quiz-options { display: grid; gap: 8px; margin-top: 12px; }
.quiz-option {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text); font-size: 13.5px;
  cursor: pointer; text-align: left; font-family: var(--font-sans); transition: border-color .12s ease, background .12s ease;
}
.quiz-option:hover { border-color: var(--accent-2); }
.quiz-option .opt-key {
  display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; flex-shrink: 0;
  border-radius: 6px; background: var(--surface); border: 1px solid var(--border-strong); font-size: 11.5px; font-weight: 700; color: var(--muted);
}
.quiz-option.correct { border-color: var(--green); background: var(--green-soft); }
.quiz-option.correct .opt-key { background: var(--green); color: #fff; border-color: var(--green); }
.quiz-option.wrong { border-color: var(--red); background: var(--red-soft); }
.quiz-option.wrong .opt-key { background: var(--red); color: #fff; border-color: var(--red); }
.quiz-option.selected { border-color: var(--accent); background: var(--accent-soft); }
.quiz-option.selected .opt-key { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.quiz-option:disabled { cursor: default; opacity: .95; }
.quiz-explain { margin-top: 12px; padding: 12px 14px; border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 8px 8px 0; font-size: 13.5px; }
.quiz-result { margin-top: 22px; padding: 14px 18px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--border); font-size: 14px; }

/* 考试 */
.exam-toolbar { display: flex; align-items: center; gap: 16px; margin: 16px 0; padding: 12px 16px; border-radius: 12px; background: var(--surface); border: 1px solid var(--border); flex-wrap: wrap; }
.exam-timer { font-family: var(--font-mono); font-size: 17px; font-weight: 700; color: var(--accent-text); font-variant-numeric: tabular-nums; }
.exam-timer.low { color: var(--red); }
.exam-progress { font-size: 13px; color: var(--muted); margin-left: auto; }
.exam-score { text-align: center; font-size: 38px; font-weight: 750; color: var(--accent-text); font-variant-numeric: tabular-nums; padding: 16px 0 4px; }
.exam-best { font-size: 13px; color: var(--muted); text-align: center; margin-bottom: 14px; }

/* 错题本 */
.wrongbook-list { display: flex; flex-direction: column; gap: 14px; margin-top: 16px; }
.wrong-item { border: 1px solid var(--border); border-radius: 12px; background: var(--surface); padding: 16px 18px; }
.wrong-item.mastered { border-color: var(--green); }
.wrong-meta { font-size: 12px; color: var(--faint); margin-bottom: 8px; }
.wrong-answer { margin-top: 10px; padding: 10px 14px; border-radius: 8px; background: var(--surface-2); font-size: 13.5px; }
.wrong-answer .ok { color: var(--green); font-weight: 700; }
.wrong-answer .bad { color: var(--red); font-weight: 700; }
.wrong-actions { display: flex; gap: 10px; margin-top: 12px; }

/* 生产场景 */
.scenario-toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 14px 0; }
.scenario-toolbar input, .scenario-toolbar select {
  padding: 8px 12px; border-radius: 8px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); font-size: 13.5px; font-family: var(--font-sans);
}
.scenario-list { display: flex; flex-direction: column; gap: 16px; }
.scenario { border: 1px solid var(--border); border-left: 4px solid var(--sev); border-radius: 12px; background: var(--surface); overflow: hidden; }
.scenario-head { display: flex; align-items: center; gap: 10px; padding: 12px 16px; background: var(--surface-2); flex-wrap: wrap; }
.scenario-head h3 { margin: 0; font-size: 15.5px; flex: 1; min-width: 200px; }
.scenario-tags { display: flex; gap: 6px; }
.scenario-tags span { font-size: 11px; padding: 2px 9px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); color: var(--muted); }
.scenario-body { padding: 8px 18px 16px; }
.scenario-block { margin-top: 14px; }
.scenario-block h4 { font-size: 11.5px; text-transform: uppercase; letter-spacing: .1em; color: var(--faint); margin-bottom: 6px; }
.scenario-block p, .scenario-block ul, .scenario-block ol { margin: .4em 0; font-size: 13.5px; max-width: 78ch; }
.scenario-code { margin-top: 8px; }
.scenario-api { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--border); }
.scenario-api a { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 999px; border: 1px solid var(--border); font-size: 12.5px; color: var(--text-soft); }
.scenario-api a:hover { border-color: var(--accent-2); color: var(--accent-text); text-decoration: none; }
.scenario-api code { background: none; padding: 0; }
.unit-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 30px; }
.unit-nav a { display: block; padding: 14px 16px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--text); }
.unit-nav a:hover { border-color: var(--accent-2); text-decoration: none; }
.unit-nav .next { text-align: right; }

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1360px) {
  .layout { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 1180px) {
  .layout { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .sidebar {
    position: fixed; top: var(--topbar-h); left: 0; bottom: 0; z-index: 90;
    width: min(320px, 86vw); background: var(--surface); border-right: 1px solid var(--border);
    transform: translateX(-100%); transition: transform .2s ease; max-height: none; padding: 16px;
  }
  body.nav-open .sidebar { transform: translateX(0); box-shadow: var(--shadow-md); }
  body.nav-open { overflow: hidden; }
  .menu-toggle { display: inline-flex; }
  html[data-sidebar="collapsed"] .layout { grid-template-columns: minmax(0, 1fr); }
  html[data-sidebar="collapsed"] .sidebar .sidebar-body { display: block; }
}
@media (max-width: 900px) {
  .topbar { flex-wrap: wrap; height: auto; padding: 8px 14px; gap: 8px; }
  .layout { margin-top: calc(var(--topbar-h) + 12px); padding: 16px 16px 48px; }
  .product-nav { order: 4; width: 100%; margin-left: 0; }
  .portal-grid { grid-template-columns: 1fr; }
  .search-trigger.large { min-width: 0; width: 100%; }
  .compare-columns { grid-template-columns: 1fr; }
  .summary-table { font-size: 13px; }
}
@media (max-width: 640px) {
  .topbar-actions { gap: 6px; }
  .search-label { display: none; }
  .search-trigger { padding: 0 12px; height: 42px; }
  .search-trigger kbd { display: none; }
  .icon-button { width: 42px; height: 42px; }
  .lang-switch button { padding: 11px 10px; }
  .product-link { padding: 10px 12px; }
  .sidebar-links a, .sidebar-types a { padding: 10px 12px; }
  .search-overlay { padding: 8vh 12px 12px; }
  .unit-nav { grid-template-columns: 1fr; }
  .unit-nav .next { text-align: left; }
  .graph-canvas { height: 360px; }
  .stat-grid > div { min-width: 104px; }
  h1 { font-size: 24px; }
}

/* ---------- 17. 打印 ---------- */
@media print {
  .topbar, .sidebar, .toc, .search-overlay, .lang-switch, .menu-toggle, .sidebar-toggle { display: none !important; }
  body { background: #fff; color: #000; }
  .layout { display: block; margin: 0; padding: 0; }
  .footer { border-top: 1px solid #ccc; }
  a { color: inherit; }
  .article { page-break-after: always; }
  pre, .summary-table { page-break-inside: avoid; }
}