:root { --bg:#ffffff; --fg:#1d1d1f; --muted:#5f6368; --line:#e5e5ea; --accent:#3b5bdb; }
@media (prefers-color-scheme: dark) { :root { --bg:#121214; --fg:#f2f2f4; --muted:#a1a1aa; --line:#2a2a2e; --accent:#8da2fb; } }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--fg); font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 48px 16px 80px; }
header { border-bottom: 1px solid var(--line); }
header nav { max-width: 760px; margin: 0 auto; padding: 16px; display:flex; gap:20px; flex-wrap:wrap; align-items:baseline; }
header a.brand { font-weight: 700; color: var(--fg); text-decoration: none; margin-right: auto; }
a { color: var(--accent); }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 1.2rem; margin: 36px 0 8px; }
.meta { color: var(--muted); font-size: .9rem; margin-bottom: 32px; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
footer div { max-width: 760px; margin: 0 auto; padding: 24px 16px; }
ul { padding-left: 1.2em; }