:root { --fg: #1a1a1a; --muted: #666; --bg: #fff; --link: #0b57d0; }
@media (prefers-color-scheme: dark) {
  :root { --fg: #e8e8e8; --muted: #9a9a9a; --bg: #121212; --link: #8ab4f8; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 48px 16px 64px; }
main.home { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 1.1rem; margin: 32px 0 8px; }
a { color: var(--link); }
.muted, .back { color: var(--muted); }
.back { margin: 0 0 24px; }
footer { margin-top: 32px; font-size: .9rem; }
ul { padding-left: 20px; }
li { margin-bottom: 8px; }