:root { --bg: #fbfaf7; --text: #1f1f1c; --muted: #6b6a64; --line: #e4e2db; --link: #2f6b3f; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #161614; --text: #ecebe6; --muted: #a3a29b; --line: #2e2d29; --link: #8fc79d; }
}
* { 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, header, footer { max-width: 680px; margin: 0 auto; padding: 0 20px; }
header { padding-top: 32px; display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px; }
header a.brand { font-weight: 700; color: var(--text); text-decoration: none; }
nav a { margin-left: 16px; }
nav a:first-child { margin-left: 0; }
a { color: var(--link); }
h1 { font-size: 2rem; line-height: 1.2; margin: 56px 0 12px; }
h2 { font-size: 1.2rem; margin-top: 36px; }
.muted { color: var(--muted); }
footer { margin-top: 72px; padding-top: 20px; padding-bottom: 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }