:root {
  --bg: #f5f2ea;
  --ink: #1d232b;
  --muted: #5d6673;
  --accent: #1f5c57;
  --rule: #e2dccd;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181f;
    --ink: #e7e3da;
    --muted: #9aa3ae;
    --accent: #7fc2b8;
    --rule: #2c3440;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
main { max-width: 680px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header a { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; font-weight: 700; font-size: 1.2rem; }
header img { width: 36px; height: 36px; border-radius: 8px; }
h1 { font-size: 1.8rem; line-height: 1.25; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 28px 0 6px; }
p, li { margin: 0 0 12px; }
a { color: var(--accent); }
.muted { color: var(--muted); }
nav { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--rule); display: flex; gap: 20px; font-size: 0.95rem; }