:root { --bg: #fbfaf7; --fg: #1d1d1f; --muted: #5f6368; --link: #1a5fb4; --line: #e3e1dc; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #16171a; --fg: #ececec; --muted: #a0a4ab; --link: #8ab4f8; --line: #2c2e33; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 48px 16px 24px; }
h1 { font-size: 2rem; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; }
.lead { color: var(--muted); margin-top: 0; }
a { color: var(--link); }
code { font-size: .9em; background: var(--line); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
ul { padding-left: 1.2em; }
footer { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; border-top: 1px solid var(--line);
  color: var(--muted); font-size: .9rem; }