:root {
  --bg: #f7f4ec;
  --ink: #20242a;
  --muted: #5d636b;
  --line: #ddd6c5;
  --accent: #8a6400;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1e23;
    --ink: #eef0f2;
    --muted: #aab0b8;
    --line: #363b43;
    --accent: #ffd34d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 system-ui, "Segoe UI", sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 40px 16px 64px; }
h1 { margin: 0 0 4px; font-size: 32px; line-height: 1.2; }
h2 { margin: 32px 0 6px; font-size: 20px; }
p, ul { margin: 0 0 12px; }
ul { padding-left: 22px; }
a { color: var(--accent); }
.date { color: var(--muted); font-size: 15px; }
nav { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 15px; }