:root {
  --bg: #ffffff;
  --fg: #1b1f24;
  --muted: #5c6670;
  --accent: #1f3a5f;
  --rule: #e3e7eb;
  --card: #f6f8fa;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --fg: #e6e9ec;
    --muted: #9aa4ae;
    --accent: #8fb3e3;
    --rule: #262c33;
    --card: #171c22;
  }
}
* { box-sizing: border-box; }
html { font-size: 17px; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
main, header.site, footer.site { max-width: 44rem; margin: 0 auto; padding: 0 1.25rem; }
header.site {
  display: flex; justify-content: space-between; align-items: baseline;
  padding-top: 1.5rem; padding-bottom: 1.5rem;
}
header.site .brand { font-weight: 700; color: var(--fg); }
header.site nav a { margin-left: 1.25rem; color: var(--muted); }
header.site nav a[aria-current] { color: var(--fg); }
h1 { font-size: 2.1rem; line-height: 1.2; margin: 1rem 0 0.5rem; letter-spacing: -0.01em; }
h2 { font-size: 1.25rem; margin: 2.5rem 0 0.75rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); }
h3 { font-size: 1rem; margin: 1.25rem 0 0.25rem; }
p.lead { font-size: 1.2rem; color: var(--muted); margin-top: 0; }
p { margin: 0.6rem 0; }
.meta { color: var(--muted); font-size: 0.92rem; }
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { margin: 0.9rem 0; }
ul.plain li .when { display: block; color: var(--muted); font-size: 0.88rem; }
ul.links { padding-left: 1.2rem; }
ul.links li { margin: 0.35rem 0; }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 0.5rem 1.5rem; margin: 1rem 0; padding: 1rem 1.25rem; background: var(--card); border-radius: 10px; }
dl.facts dt { color: var(--muted); }
dl.facts dd { margin: 0; }
@media (max-width: 480px) {
  dl.facts { grid-template-columns: 1fr; gap: 0.1rem; }
  dl.facts dt { margin-top: 0.6rem; }
  html { font-size: 16px; }
}
footer.site { margin-top: 3.5rem; padding-top: 1.25rem; padding-bottom: 2.5rem; border-top: 1px solid var(--rule); color: var(--muted); font-size: 0.9rem; }