:root {
  --bg: #fbfaf7;
  --text: #1d1f1c;
  --muted: #5d625a;
  --accent: #2f6b4f;
  --rule: #e4e2dc;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141614;
    --text: #ecebe6;
    --muted: #a3a89f;
    --accent: #7cc4a0;
    --rule: #2c2f2b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 48px 16px 80px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 32px 0 6px; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 0.95rem; }
a { color: var(--accent); }
nav { display: flex; gap: 16px; margin-bottom: 40px; font-size: 0.95rem; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 56px 0; }