:root { --bg: #fff; --fg: #1a1a1a; --muted: #5f6368; --accent: #1a56db; --line: #e3e5e8; }
@media (prefers-color-scheme: dark) { :root { --bg: #111; --fg: #ececec; --muted: #9aa0a6; --accent: #8ab4f8; --line: #2c2f33; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
header, main, footer { max-width: 44rem; margin: 0 auto; padding: 1rem 1.25rem; }
header { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; align-items: baseline; border-bottom: 1px solid var(--line); }
header a.brand { font-weight: 700; color: var(--fg); text-decoration: none; margin-right: auto; }
nav a { margin-left: 1.25rem; }
a { color: var(--accent); }
h1 { font-size: 1.8rem; line-height: 1.25; margin: 1.5rem 0 .5rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 .25rem; }
p, li { margin: .5rem 0; }
.muted { color: var(--muted); font-size: .9rem; }
footer { border-top: 1px solid var(--line); margin-top: 3rem; color: var(--muted); font-size: .9rem; }
footer a { margin-right: 1.25rem; }