:root {
  --bg: #fbfaf6;
  --text: #2b2823;
  --muted: #6f6a60;
  --accent: #e8442e;
  --rule: #e4dfd4;
  --box: #f1ede4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1b19;
    --text: #ece8e0;
    --muted: #a8a296;
    --accent: #ff6f5a;
    --rule: #37342f;
    --box: #26241f;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.rainbow {
  height: 6px;
  background: linear-gradient(90deg, #fb4a26 0 20%, #fba604 20% 40%, #fbd700 40% 60%, #83d809 60% 80%, #02adef 80%);
}
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
nav { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 14px; margin-bottom: 24px; }
nav a { color: var(--muted); }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 4px; }
h2 { font-size: 19px; margin: 36px 0 8px; padding-top: 16px; border-top: 1px solid var(--rule); }
h3 { font-size: 16px; margin: 20px 0 4px; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
.summary { background: var(--box); border-left: 4px solid var(--accent); padding: 12px 16px; border-radius: 4px; }
a { color: var(--accent); }
ul { padding-left: 22px; }
li { margin: 4px 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 24px; }
.card { background: var(--box); border-radius: 8px; padding: 16px; }
.card h2 { border: 0; margin: 0 0 8px; padding: 0; }
.card a { display: block; margin: 6px 0; }
footer { color: var(--muted); font-size: 14px; margin-top: 48px; }