:root{--bg:#fff;--fg:#1d1d1f;--muted:#5f6368;--link:#0b57d0;--line:#dadce0}
@media (prefers-color-scheme:dark){:root{--bg:#141517;--fg:#ececee;--muted:#a8abb2;--link:#8ab4f8;--line:#3a3c41}}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
main,footer{max-width:680px;margin:0 auto;padding:0 16px}
main{padding-top:48px}
h1{font-size:2.2rem;line-height:1.2;margin:0 0 12px}
h2{font-size:1.25rem;margin:32px 0 8px}
.lead{font-size:1.15rem;color:var(--muted)}
a{color:var(--link)}
hr{border:0;border-top:1px solid var(--line);margin:40px 0}
footer{color:var(--muted);font-size:.85rem;padding-top:32px;padding-bottom:40px}