:root { color-scheme: light dark; --bg: #ffffff; --text: #1b1f24; --muted: #5a6470; --link: #2563c9; --line: #e3e6ea; }
@media (prefers-color-scheme: dark) { :root { --bg: #14171b; --text: #e8eaed; --muted: #9aa3ad; --link: #8ab4ff; --line: #2a2f36; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 "Segoe UI", system-ui, -apple-system, sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 64px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; padding-top: 16px; border-top: 1px solid var(--line); }
.lead { font-size: 1.15rem; color: var(--muted); margin-top: 0; }
.small { color: var(--muted); font-size: 0.9rem; }
a { color: var(--link); }
code { font-size: 0.9em; overflow-wrap: anywhere; }
ul { padding-left: 1.2em; }
li { margin: 6px 0; }