:root {
  --bg: #fbfaf7;
  --text: #1d1d1f;
  --muted: #5f6368;
  --accent: #3f4fd8;
  --rule: #e4e1da;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17171a;
    --text: #ececef;
    --muted: #a3a3ab;
    --accent: #9aa5ff;
    --rule: #2c2c31;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 48px 16px 64px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; }
p, li { color: var(--text); }
.lead { font-size: 1.2rem; color: var(--muted); margin: 0 0 32px; }
.muted { color: var(--muted); font-size: 0.9rem; }
a { color: var(--accent); }
footer { border-top: 1px solid var(--rule); margin-top: 48px; padding-top: 16px; }
footer a { margin-right: 16px; }
.home main { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; }