:root {
  --bg: #fbfaf7;
  --text: #1d1c1a;
  --muted: #5f5c55;
  --line: #e4e1da;
  --accent: #2f7d5b;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121312; --text: #ecebe7; --muted: #a29f97; --line: #2b2c2a; --accent: #6cc79b; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 42rem; margin: 0 auto; padding: 2.5rem 1rem 4rem; }
header { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: 2rem; }
header a.home { font-weight: 700; font-size: 1.25rem; color: var(--text); text-decoration: none; }
nav a { color: var(--muted); margin-left: 0.75rem; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 0.25rem; }
h2 { font-size: 1.15rem; margin: 2.25rem 0 0.5rem; }
p, li { color: var(--text); }
.meta { color: var(--muted); margin: 0 0 1.5rem; }
a { color: var(--accent); }
ul { padding-left: 1.2rem; }
li { margin: 0.25rem 0; }
.box { border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.25rem; margin: 1.5rem 0; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }