:root {
  --bg: #fbf4e6;
  --paper: #fffdf8;
  --ink: #4a3526;
  --muted: #8a735f;
  --accent: #d9603b;
  --rule: #eadcc6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1f1a16;
    --paper: #2a231d;
    --ink: #f1e6d6;
    --muted: #b9a58f;
    --accent: #f08a62;
    --rule: #3d342b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.7 -apple-system, BlinkMacSystemFont, "PingFang TC", "Hiragino Sans", "Noto Sans TC", sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
header a { color: var(--ink); font-weight: 700; font-size: 20px; text-decoration: none; }
nav { margin: 8px 0 24px; color: var(--muted); font-size: 15px; }
a { color: var(--accent); }
section {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 16px;
  padding: 8px 24px 20px;
  margin-bottom: 24px;
}
h1 { font-size: 26px; margin: 16px 0 4px; }
h2 { font-size: 19px; margin: 24px 0 4px; }
h3 { font-size: 17px; margin: 16px 0 0; }
p { margin: 6px 0; }
.updated { color: var(--muted); font-size: 14px; }