:root { color-scheme: light dark; --fg: #1d1d1f; --muted: #5f6368; --bg: #fbfbfa; --rule: #e3e3e0; }
@media (prefers-color-scheme: dark) { :root { --fg: #ececea; --muted: #a0a3a8; --bg: #161617; --rule: #2c2c2e; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 40rem; margin: 0 auto; padding: 4rem 1rem 3rem; }
h1 { font-size: 2rem; margin: 0 0 .25rem; letter-spacing: -.01em; }
h2 { font-size: 1.1rem; margin: 2.25rem 0 .5rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); }
.lead { color: var(--muted); margin: 0; }
ul { padding-left: 1.2rem; }
li { margin: .25rem 0; }
.foot { margin-top: 3rem; color: var(--muted); font-size: .85rem; }