:root {
  --bg: #ffffff;
  --text: #1c1b1f;
  --muted: #5f5b66;
  --brand: #91002f;
  --rule: #e6e1e8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --text: #ece6ee;
    --muted: #a8a2ad;
    --brand: #ff5c8a;
    --rule: #2c2a30;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 32px 20px 64px; }
header { border-bottom: 1px solid var(--rule); margin-bottom: 24px; padding-bottom: 16px; }
.brand { color: var(--brand); font-weight: 700; letter-spacing: 0.02em; text-decoration: none; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 8px 0 4px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
h3 { font-size: 1rem; margin: 20px 0 4px; }
.meta { color: var(--muted); margin: 0; font-size: 0.95rem; }
a { color: var(--brand); }
code { font-size: 0.9em; }
li { margin: 4px 0; }
.links { list-style: none; padding: 0; }
.links li { margin: 12px 0; font-size: 1.1rem; }