:root {
  --bg: #fafaf7;
  --text: #1d1d1b;
  --muted: #5f5f5a;
  --accent: #2f6fdf;
  --rule: #e2e2dc;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --text: #ececea;
    --muted: #a3a39d;
    --accent: #8ab4ff;
    --rule: #33332f;
  }
}
* { 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;
}
main { max-width: 42rem; margin: 0 auto; padding: 2.5rem 16px 4rem; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 0.5rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.5rem; }
.lead { font-size: 1.1rem; color: var(--muted); }
.meta { color: var(--muted); font-size: 0.9rem; }
a { color: var(--accent); }
code { font-size: 0.85em; overflow-wrap: anywhere; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 3rem 0; }
footer { margin-top: 3rem; color: var(--muted); font-size: 0.9rem; }