:root {
  --bg: #fafaf8;
  --surface: #ffffff;
  --text: #1c1f23;
  --muted: #5d6670;
  --line: #e2e4e1;
  --accent: #0b5f6b;
  --note-bg: #f1f5f4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121416;
    --surface: #1a1d20;
    --text: #e8eaec;
    --muted: #a1a9b1;
    --line: #2c3136;
    --accent: #6fc3cf;
    --note-bg: #1f2528;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.8;
}
a { color: var(--accent); text-underline-offset: 3px; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; }
.site-name { font-weight: 700; color: var(--text); text-decoration: none; letter-spacing: 0.01em; }
.site-nav a { margin-left: 18px; font-size: 0.9rem; color: var(--muted); text-decoration: none; }
.site-nav a:hover { color: var(--text); }
main { padding: 40px 0 64px; }
.crumbs { font-size: 0.85rem; color: var(--muted); margin: 0 0 12px; }
.crumbs a { color: var(--muted); }
h1 { font-size: 1.9rem; line-height: 1.35; margin: 0 0 6px; text-wrap: balance; }
h2 { font-size: 1.25rem; margin: 44px 0 12px; padding-top: 20px; border-top: 1px solid var(--line); }
.kicker { color: var(--muted); font-size: 0.92rem; margin: 0 0 20px; }
.lede { font-size: 1.05rem; margin: 0 0 20px; }
.note { background: var(--note-bg); border-left: 3px solid var(--accent); padding: 12px 16px; font-size: 0.92rem; margin: 20px 0; }
.note p { margin: 0; }
.note p + p { margin-top: 6px; }
table.facts { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); }
table.facts th, table.facts td { text-align: left; vertical-align: top; padding: 10px 14px; border-bottom: 1px solid var(--line); }
table.facts tr:last-child th, table.facts tr:last-child td { border-bottom: 0; }
table.facts th { width: 9.5em; font-weight: 600; color: var(--muted); white-space: nowrap; }
table.facts td { overflow-wrap: anywhere; }
sup.ref { font-size: 0.72em; margin-left: 2px; }
sup.ref a { text-decoration: none; }
ul.plain { padding-left: 1.2em; margin: 0; }
ul.plain li { margin: 4px 0; }
dl.people { margin: 0; }
dl.people dt { font-weight: 600; margin-top: 12px; }
dl.people dd { margin: 0; color: var(--muted); }
.faq h3 { font-size: 1.02rem; margin: 22px 0 4px; }
.faq p { margin: 0; }
ol.sources { padding-left: 1.4em; font-size: 0.93rem; }
ol.sources li { margin: 6px 0; overflow-wrap: anywhere; }
.meta { color: var(--muted); font-size: 0.88rem; }
/* Home page */
body.home .wrap { max-width: 940px; }
main.home { padding-top: 0; }
.hero { padding: 72px 0 56px; border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0 0 14px; font-size: 0.85rem; font-weight: 600; letter-spacing: 0.06em; color: var(--accent); }
.hero h1 { font-size: clamp(2rem, 5.2vw, 3.1rem); line-height: 1.3; margin: 0 0 18px; letter-spacing: 0.01em; }
.hero .lede { max-width: 34em; color: var(--muted); font-size: 1.1rem; margin: 0 0 28px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 0; }
.button { display: inline-block; padding: 10px 22px; background: var(--accent); color: var(--bg); border: 1px solid var(--accent); text-decoration: none; font-weight: 600; font-size: 0.95rem; }
.button.ghost { background: transparent; color: var(--accent); }
.button:hover { opacity: 0.88; }
main.home h2 { border-top: 0; padding-top: 0; margin: 56px 0 20px; font-size: 1.35rem; }
.count { display: inline-block; margin-left: 6px; padding: 0 9px; font-size: 0.8rem; font-weight: 600; color: var(--muted); border: 1px solid var(--line); border-radius: 99px; vertical-align: middle; }
.principles { list-style: none; counter-reset: p; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.principles li { counter-increment: p; background: var(--surface); border: 1px solid var(--line); padding: 20px 20px 18px; }
.principles li::before { content: "0" counter(p); display: block; font-size: 0.8rem; font-weight: 700; color: var(--accent); letter-spacing: 0.08em; margin-bottom: 8px; }
.principles strong { font-size: 1.05rem; }
.principles p { margin: 6px 0 0; color: var(--muted); font-size: 0.93rem; line-height: 1.75; }
.cards { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.card { display: block; height: 100%; background: var(--surface); border: 1px solid var(--line); padding: 18px 20px 16px; text-decoration: none; color: var(--text); transition: border-color 0.15s; }
.card:hover { border-color: var(--accent); }
.card .tag { display: inline-block; font-size: 0.76rem; font-weight: 600; color: var(--accent); background: var(--note-bg); padding: 1px 9px; margin-bottom: 10px; }
.card strong { display: block; font-size: 1.15rem; line-height: 1.5; }
.card .en { display: block; color: var(--muted); font-size: 0.9rem; }
.card-meta { display: block; margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.82rem; }
.anatomy { margin: 0; border-top: 1px solid var(--line); }
.anatomy div { display: grid; grid-template-columns: 11em 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.anatomy dt { font-weight: 600; }
.anatomy dd { margin: 0; color: var(--muted); }
.contact { margin-top: 56px; background: var(--note-bg); padding: 4px 24px 22px; }
.contact h2 { margin-top: 24px !important; }
.contact p { margin: 0; max-width: 40em; }
@media (max-width: 720px) {
  .hero { padding: 48px 0 40px; }
  .principles { grid-template-columns: 1fr; }
  .anatomy div { grid-template-columns: 1fr; gap: 2px; }
}
.site-footer { border-top: 1px solid var(--line); padding: 24px 0 40px; color: var(--muted); font-size: 0.86rem; }
.site-footer p { margin: 4px 0; }
@media (max-width: 520px) {
  body { font-size: 16px; }
  h1 { font-size: 1.55rem; }
  table.facts th { width: 6.5em; white-space: normal; }
}