/* 自动生成 —— scripts/seo/prerender.mjs:src/styles/tokens.css + scripts/seo/q.css */
/* 自动生成 —— 勿手改。来源 src/core/palette.ts,运行 node scripts/gen-tokens.mts 重新生成。 */
/* 主题:<html data-theme="light|dark"> 由 index.html 首屏脚本设置;无脚本时跟随 prefers-color-scheme。 */

:root {
  color-scheme: dark;
  --sky-bg: #0e1016;
  --sky-surface: #151823;
  --sky-raised: #1c2030;
  --sky-overlay: #232840;
  --sky-ink: #e6e8ef;
  --sky-text-dim: rgba(230,232,239,0.6);
  --sky-text-faint: rgba(230,232,239,0.38);
  --sky-border: rgba(230,232,239,0.08);
  --sky-border-strong: rgba(230,232,239,0.14);
  --sky-border-soft: rgba(230,232,239,0.05);
  --sky-gold: #e5b567;
  --sky-gold-hover: #edc27e;
  --sky-gold-pressed: #d3a257;
  --sky-gold-soft: rgba(229,181,103,0.08);
  --sky-gold-line: rgba(229,181,103,0.25);
  --sky-gold-glow: rgba(229,181,103,0.6);
  --sky-mist: #6fb3c9;
  --sky-mist-soft: rgba(111,179,201,0.12);
  --sky-coral: #e5736a;
  --sky-coral-soft: rgba(229,115,106,0.1);
  --sky-up: #e5675c;
  --sky-down: #49b98a;
  --sky-selection: #1c2030;
  --sky-code-bg: #161616;
  --sky-canvas-bg: #1e1e1e;
  --sky-link: #a98efb;
  --sky-shadow: rgba(0,0,0,0.45);
  --sky-scrim: rgba(0,0,0,0.55);
  --rd-bg: #151823;
  --rd-surface: #1c2030;
  --rd-surface2: #232840;
  --rd-text: #c4c8d6;
  --rd-strong: #dde1ed;
  --rd-dim: #9096ac;
  --rd-emphasis: #cdd1df;
  --rd-emphasis-alt: #cfd3e0;
  --rd-code-text: #e6d9b8;
  --rd-pre-bg: #0e1122;
  --rd-pre-text: #b9bed2;
  --rd-line: rgba(230,232,239,0.1);
  --rd-quote-bg: rgba(255,255,255,0.02);
  --rd-th-bg: rgba(255,255,255,0.04);
  --rd-img-shadow: rgba(0,0,0,0.35);
  --rd-note-yellow: rgba(255,214,10,0.34);
  --rd-note-green: rgba(52,199,89,0.34);
  --rd-note-blue: rgba(10,132,255,0.34);
  --rd-note-pink: rgba(255,45,85,0.34);
  --rd-note-underline: rgba(221,225,237,0.55);
  --rd-gold-line: rgba(229,181,103,0.35);
  --rd-gold-bar: rgba(229,181,103,0.5);
  --note-swatch-yellow: rgba(255,214,10,0.55);
  --note-swatch-green: rgba(52,199,89,0.55);
  --note-swatch-blue: rgba(10,132,255,0.55);
  --note-swatch-pink: rgba(255,45,85,0.55);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme='dark']) {
    color-scheme: light;
    --sky-bg: #f2eee4;
    --sky-surface: #f8f4eb;
    --sky-raised: #fcfaf4;
    --sky-overlay: #ffffff;
    --sky-ink: #1a1c22;
    --sky-text-dim: rgba(26,28,34,0.62);
    --sky-text-faint: rgba(26,28,34,0.42);
    --sky-border: rgba(26,28,34,0.1);
    --sky-border-strong: rgba(26,28,34,0.16);
    --sky-border-soft: rgba(26,28,34,0.06);
    --sky-gold: #906416;
    --sky-gold-hover: #78500f;
    --sky-gold-pressed: #5b3b0a;
    --sky-gold-soft: rgba(144,100,22,0.08);
    --sky-gold-line: rgba(144,100,22,0.25);
    --sky-gold-glow: rgba(144,100,22,0.6);
    --sky-mist: #2c6f86;
    --sky-mist-soft: rgba(44,111,134,0.12);
    --sky-coral: #b03a30;
    --sky-coral-soft: rgba(176,58,48,0.1);
    --sky-up: #c0392b;
    --sky-down: #1e7d5a;
    --sky-selection: #ede7da;
    --sky-code-bg: #ede8dc;
    --sky-canvas-bg: #f9f6ef;
    --sky-link: #5b3fbf;
    --sky-shadow: rgba(0,0,0,0.12);
    --sky-scrim: rgba(0,0,0,0.28);
    --rd-bg: #f8f4eb;
    --rd-surface: #fcfaf4;
    --rd-surface2: #ffffff;
    --rd-text: #333846;
    --rd-strong: #222734;
    --rd-dim: #575d6c;
    --rd-emphasis: #2c3243;
    --rd-emphasis-alt: #2b3140;
    --rd-code-text: #423417;
    --rd-pre-bg: #ede7da;
    --rd-pre-text: #303440;
    --rd-line: rgba(26,28,34,0.12);
    --rd-quote-bg: rgba(0,0,0,0.04);
    --rd-th-bg: rgba(0,0,0,0.06);
    --rd-img-shadow: rgba(0,0,0,0.1);
    --rd-note-yellow: rgba(255,214,10,0.42);
    --rd-note-green: rgba(52,199,89,0.42);
    --rd-note-blue: rgba(10,132,255,0.42);
    --rd-note-pink: rgba(255,45,85,0.42);
    --rd-note-underline: rgba(34,39,52,0.55);
    --rd-gold-line: rgba(144,100,22,0.35);
    --rd-gold-bar: rgba(144,100,22,0.5);
    --note-swatch-yellow: rgba(255,214,10,0.55);
    --note-swatch-green: rgba(52,199,89,0.55);
    --note-swatch-blue: rgba(10,132,255,0.55);
    --note-swatch-pink: rgba(255,45,85,0.55);
  }
}

:root[data-theme='light'] {
  color-scheme: light;
  --sky-bg: #f2eee4;
  --sky-surface: #f8f4eb;
  --sky-raised: #fcfaf4;
  --sky-overlay: #ffffff;
  --sky-ink: #1a1c22;
  --sky-text-dim: rgba(26,28,34,0.62);
  --sky-text-faint: rgba(26,28,34,0.42);
  --sky-border: rgba(26,28,34,0.1);
  --sky-border-strong: rgba(26,28,34,0.16);
  --sky-border-soft: rgba(26,28,34,0.06);
  --sky-gold: #906416;
  --sky-gold-hover: #78500f;
  --sky-gold-pressed: #5b3b0a;
  --sky-gold-soft: rgba(144,100,22,0.08);
  --sky-gold-line: rgba(144,100,22,0.25);
  --sky-gold-glow: rgba(144,100,22,0.6);
  --sky-mist: #2c6f86;
  --sky-mist-soft: rgba(44,111,134,0.12);
  --sky-coral: #b03a30;
  --sky-coral-soft: rgba(176,58,48,0.1);
  --sky-up: #c0392b;
  --sky-down: #1e7d5a;
  --sky-selection: #ede7da;
  --sky-code-bg: #ede8dc;
  --sky-canvas-bg: #f9f6ef;
  --sky-link: #5b3fbf;
  --sky-shadow: rgba(0,0,0,0.12);
  --sky-scrim: rgba(0,0,0,0.28);
  --rd-bg: #f8f4eb;
  --rd-surface: #fcfaf4;
  --rd-surface2: #ffffff;
  --rd-text: #333846;
  --rd-strong: #222734;
  --rd-dim: #575d6c;
  --rd-emphasis: #2c3243;
  --rd-emphasis-alt: #2b3140;
  --rd-code-text: #423417;
  --rd-pre-bg: #ede7da;
  --rd-pre-text: #303440;
  --rd-line: rgba(26,28,34,0.12);
  --rd-quote-bg: rgba(0,0,0,0.04);
  --rd-th-bg: rgba(0,0,0,0.06);
  --rd-img-shadow: rgba(0,0,0,0.1);
  --rd-note-yellow: rgba(255,214,10,0.42);
  --rd-note-green: rgba(52,199,89,0.42);
  --rd-note-blue: rgba(10,132,255,0.42);
  --rd-note-pink: rgba(255,45,85,0.42);
  --rd-note-underline: rgba(34,39,52,0.55);
  --rd-gold-line: rgba(144,100,22,0.35);
  --rd-gold-bar: rgba(144,100,22,0.5);
  --note-swatch-yellow: rgba(255,214,10,0.55);
  --note-swatch-green: rgba(52,199,89,0.55);
  --note-swatch-blue: rgba(10,132,255,0.55);
  --note-swatch-pink: rgba(255,45,85,0.55);
}

/* ── 公开题目页(q/**)样式 ── 色值一律取 tokens.css 的 var(--sky-*) / var(--rd-*),不写字面量。 */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace;
  --q-max: 760px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--sky-bg);
  color: var(--sky-ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--sky-link); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--sky-gold); outline-offset: 2px; border-radius: 4px; }
::selection { background: var(--sky-gold-soft); }

/* 顶栏 / 页脚 */
.top { border-bottom: 1px solid var(--sky-border); background: var(--sky-surface); }
.top-in, .foot-in, .wrap { max-width: var(--q-max); margin: 0 auto; padding-left: 16px; padding-right: 16px; }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 12px; height: 52px; }
.brand { color: var(--sky-gold); font-weight: 600; letter-spacing: 0.04em; }
.top-nav { display: flex; gap: 16px; font-size: 14px; }
.top-nav a { color: var(--sky-text-dim); }
.wrap { padding-top: 16px; padding-bottom: 48px; }
.foot { border-top: 1px solid var(--sky-border); color: var(--sky-text-faint); font-size: 12px; }
.foot-in { padding-top: 16px; padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px)); }

/* 面包屑 */
.crumbs ol { list-style: none; margin: 0 0 16px; padding: 0; display: flex; flex-wrap: wrap; gap: 4px; font-size: 12px; color: var(--sky-text-faint); }
.crumbs li + li::before { content: '›'; margin-right: 4px; }
.crumbs a { color: var(--sky-text-dim); }

.eyebrow { margin: 0 0 4px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; color: var(--sky-gold); }
h1 { margin: 0 0 12px; font-size: 20px; line-height: 1.4; font-weight: 600; }
h2 { margin: 20px 0 8px; font-size: 15px; font-weight: 600; color: var(--sky-ink); }

/* 富文本(题干 / 解析 / 参考答案) */
.rich p { margin: 0 0 10px; }
.rich p:last-child { margin-bottom: 0; }
code { font-family: var(--font-mono); font-size: 0.92em; padding: 1px 5px; border-radius: 4px; background: var(--sky-gold-soft); color: var(--sky-ink); }
pre { margin: 10px 0; padding: 12px 14px; border-radius: 8px; background: var(--rd-pre-bg); color: var(--rd-pre-text); overflow-x: auto; font-size: 13px; line-height: 1.55; }
pre code { padding: 0; background: none; color: inherit; font-size: inherit; }

/* 单题卡片 */
.q { padding: 20px; border: 1px solid var(--sky-border); border-radius: 12px; background: var(--sky-surface); }
.q-title { font-size: 13px; font-weight: 500; color: var(--sky-text-dim); margin-bottom: 10px; }
.stem { font-size: 17px; line-height: 1.75; }
.opts { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 8px; }
.opts li { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border: 1px solid var(--sky-border-strong); border-radius: 8px; background: var(--sky-raised); font-size: 16px; }
.opt-key { flex: none; width: 24px; height: 24px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 12px; border: 1px solid var(--sky-border-strong); color: var(--sky-text-dim); }
.opt-text { min-width: 0; overflow-wrap: anywhere; }
.opts li.is-answer { border-color: var(--sky-gold-line); background: var(--sky-gold-soft); }
.opts li.is-answer .opt-key { border-color: var(--sky-gold); color: var(--sky-gold); }

.answer { margin-top: 20px; padding-top: 4px; border-top: 1px dashed var(--sky-border-strong); }
.ans { margin: 0; }
.ans strong { color: var(--sky-gold); font-family: var(--font-mono); font-size: 17px; margin-right: 6px; }
.ans-opt { color: var(--sky-text-dim); }
.ans-opt + .ans-opt::before { content: '; '; }

.source { margin-top: 20px; padding: 10px 12px; border-radius: 8px; background: var(--sky-mist-soft); color: var(--sky-text-dim); font-size: 13px; }
.source p { margin: 0; }
.source .license { margin-top: 4px; font-size: 12px; color: var(--sky-text-faint); }

/* 翻页 */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0; }
.pager a, .pager .pg-none { display: block; padding: 10px 12px; border: 1px solid var(--sky-border); border-radius: 8px; background: var(--sky-surface); color: var(--sky-ink); font-size: 13px; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.pager a span { display: block; font-size: 11px; color: var(--sky-gold); font-family: var(--font-mono); letter-spacing: 0.06em; }
.pager .pg-next { text-align: right; }
.pager .pg-none { color: var(--sky-text-faint); }
.pager a:hover { border-color: var(--sky-gold-line); text-decoration: none; }

/* CTA */
.cta { margin: 16px 0; padding: 16px; border: 1px solid var(--sky-gold-line); border-radius: 12px; background: var(--sky-gold-soft); }
.cta-text { margin: 0 0 12px; font-size: 14px; color: var(--sky-ink); }
.cta-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.btn { display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px; border-radius: 8px; border: 1px solid var(--sky-border-strong); background: var(--sky-raised); color: var(--sky-ink); font-size: 14px; font-weight: 500; }
.btn:hover { text-decoration: none; border-color: var(--sky-gold-line); }
.btn-gold { background: var(--sky-gold); border-color: var(--sky-gold); color: var(--sky-bg); }
.btn-gold:hover { background: var(--sky-gold-hover); }

/* 列表页 */
.intro .desc { margin: 0 0 12px; color: var(--sky-text-dim); }
.facts { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; margin: 0 0 8px; }
.facts div { padding: 8px 10px; border: 1px solid var(--sky-border); border-radius: 8px; background: var(--sky-surface); }
.facts dt { font-size: 11px; color: var(--sky-text-faint); }
.facts dd { margin: 0; font-size: 14px; }
.toc { display: flex; flex-wrap: wrap; gap: 6px; margin: 16px 0; }
.toc a { padding: 4px 10px; border-radius: 999px; border: 1px solid var(--sky-border-strong); color: var(--sky-ink); font-size: 13px; }
.toc a span { margin-left: 6px; color: var(--sky-text-faint); font-size: 12px; }
.sec h2 { margin-top: 24px; scroll-margin-top: 12px; }
.count { font-size: 12px; font-weight: 400; color: var(--sky-text-faint); }
.qlist { list-style: none; margin: 0; padding: 0; border: 1px solid var(--sky-border); border-radius: 10px; overflow: hidden; background: var(--sky-surface); }
.qlist li + li { border-top: 1px solid var(--sky-border-soft); }
.qlist a { display: flex; gap: 10px; align-items: baseline; padding: 10px 12px; color: var(--sky-ink); }
.qlist a:hover { background: var(--sky-gold-soft); text-decoration: none; }
.qn { flex: none; min-width: 2.5em; font-family: var(--font-mono); font-size: 12px; color: var(--sky-gold); }
.qs { flex: 1; min-width: 0; overflow-wrap: anywhere; font-size: 14px; }
.qt { flex: none; font-size: 11px; color: var(--sky-text-faint); }
.sources ul { margin: 0; padding-left: 18px; color: var(--sky-text-dim); font-size: 13px; }
.sources small { color: var(--sky-text-faint); }
.exam-list { list-style: none; margin: 16px 0; padding: 0; display: grid; gap: 8px; }
.exam-list a { display: flex; flex-direction: column; padding: 14px 16px; border: 1px solid var(--sky-border); border-radius: 10px; background: var(--sky-surface); color: var(--sky-ink); }
.exam-list span { font-size: 12px; color: var(--sky-text-faint); }

@media (max-width: 520px) {
  body { font-size: 14px; }
  .q { padding: 16px 14px; border-radius: 10px; }
  .stem { font-size: 16px; }
  .opts li { font-size: 15px; }
  h1 { font-size: 18px; }
  .qt { display: none; }
}