:root {
  color-scheme: light dark;
  --bg: #faf8f4;
  --ink: #1c1917;
  --muted: #57534e;
  --accent: #2b5f86;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161412;
    --ink: #eee9e3;
    --muted: #a8a29e;
    --accent: #7fb0d4;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif;
}
main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 3rem 1.25rem 4rem;
}
h1 { font-size: 2rem; line-height: 1.15; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.5rem; }
p, li { color: var(--muted); }
a { color: var(--accent); }
footer { margin-top: 2.5rem; font-size: 0.95rem; }