:root {
  --bg: #faf8f4; --fg: #1d1b18; --muted: #6b665e; --line: #e4dfd6; --accent: #8a5a1f;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121110; --fg: #ece8e1; --muted: #a39d93; --line: #2c2925; --accent: #e0b070; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
main, header, footer { max-width: 680px; margin: 0 auto; padding: 0 20px; }
header { padding-top: 28px; display: flex; gap: 18px; align-items: baseline; flex-wrap: wrap; }
header .brand { font: 600 22px/1 ui-serif, Georgia, serif; color: var(--fg); text-decoration: none; margin-right: auto; }
header nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-size: 15px; }
header nav a:hover { color: var(--fg); }
h1 { font: 600 34px/1.2 ui-serif, Georgia, serif; margin: 40px 0 8px; }
h2 { font: 600 22px/1.3 ui-serif, Georgia, serif; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 24px 0 4px; }
p.meta { color: var(--muted); margin-top: 0; }
a { color: var(--accent); }
ul { padding-left: 22px; }
li { margin: 4px 0; }
.box { border: 1px solid var(--line); border-radius: 12px; padding: 4px 20px; margin: 20px 0; }
footer { color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); margin-top: 56px; padding-top: 16px; padding-bottom: 40px; }
footer a { color: var(--muted); margin-right: 14px; }