:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #555555;
  --link: #0a5cad;
  --border: #e2e2e2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #eaeaea;
    --muted: #a6a6a6;
    --link: #6cb2f4;
    --border: #2a2d33;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}
h1 {
  font-size: 1.75rem;
  margin-bottom: 0.25rem;
}
h2 {
  font-size: 1.15rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}
.updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}
p, li { color: var(--fg); }
ul { padding-left: 1.25rem; }
a { color: var(--link); }
footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}
.site-nav {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 0.9rem;
}
.site-nav a { color: var(--muted); text-decoration: none; margin-right: 1rem; }
.site-nav a:hover { color: var(--link); }