:root {
  color-scheme: light dark;
  --bg: #f7f6f2;
  --surface: #ffffff;
  --text: #1f2328;
  --muted: #5d6470;
  --border: #e2e0d8;
  --accent: #2f6f62;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --surface: #1e2125;
    --text: #eceef0;
    --muted: #a6adb7;
    --border: #33373d;
    --accent: #7cc7b5;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Noto Sans TC", "PingFang TC", sans-serif;
  line-height: 1.85;
}
main { max-width: 780px; margin: 0 auto; padding: 48px 20px 80px; }
header.site { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: baseline; margin-bottom: 40px; font-size: .95rem; color: var(--muted); }
header.site a.brand { font-weight: 700; color: var(--text); text-decoration: none; font-size: 1.05rem; }
nav.links { display: flex; flex-wrap: wrap; gap: 4px 16px; }
h1 { font-size: 1.85rem; line-height: 1.4; margin: 0 0 12px; }
h2 { font-size: 1.2rem; line-height: 1.5; margin: 36px 0 10px; }
h3 { font-size: 1.08rem; line-height: 1.5; margin: 28px 0 8px; }
section[id] { scroll-margin-top: 16px; }
p, li { overflow-wrap: anywhere; }
a { color: var(--accent); }
.meta { color: var(--muted); margin: 0 0 28px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 4px 20px; }
.card dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 16px 0; }
.card dt { color: var(--muted); }
.card dd { margin: 0; overflow-wrap: anywhere; }
@media (max-width: 520px) { .card dl { grid-template-columns: 1fr; gap: 0; } .card dd { margin-bottom: 10px; } }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .92em; }
hr { border: 0; border-top: 1px solid var(--border); margin: 64px 0; }
ul.apps { list-style: none; padding: 0; }
ul.apps li { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px 20px; margin-bottom: 12px; }
ul.apps strong { font-size: 1.05rem; }
footer { margin-top: 64px; color: var(--muted); font-size: .9rem; }