:root {
  color-scheme: light dark;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --bg: #ffffff;
  --card: #f5f5f7;
  --border: #d2d2d7;
  --link: #0066cc;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --bg: #111111;
    --card: #1c1c1e;
    --border: #38383a;
    --link: #4da3ff;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0 auto;
  max-width: 720px;
  padding: 2rem 1.25rem 3rem;
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}
a { color: var(--link); }
header { margin-bottom: 2rem; }
header .site { font-weight: 600; text-decoration: none; color: var(--muted); }
h1 { font-size: 2rem; line-height: 1.2; margin: 0.5rem 0 0.25rem; }
h2 { font-size: 1.25rem; margin-top: 2rem; }
.lead { color: var(--muted); margin-top: 0; }
.card {
  display: block;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  color: inherit;
  text-decoration: none;
}
.card h3 { margin: 0 0 0.25rem; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); }
footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}