:root {
  --bg: #fbfaf7;
  --ink: #1c1d21;
  --muted: #5b6070;
  --line: #e3e0d8;
  --accent: #c23300;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121317; --ink: #e9e8e4; --muted: #a3a8b6; --line: #2a2c33; --accent: #ff7a45; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 42rem; margin: 0 auto; padding: 3rem 1.25rem 4rem; }
header { border-bottom: 1px solid var(--line); margin-bottom: 2rem; padding-bottom: 1rem; }
header a { color: var(--ink); font-weight: 700; text-decoration: none; }
nav { display: flex; gap: 1rem; font-size: 0.9rem; }
nav a { color: var(--muted); }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 0.25rem; }
h2 { font-size: 1.1rem; margin: 2rem 0 0.5rem; }
.meta { color: var(--muted); font-size: 0.9rem; margin: 0 0 2rem; }
a { color: var(--accent); }
li { margin: 0.35rem 0; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: 0.85rem; margin-top: 3rem; padding-top: 1rem; }