:root{--bg:#f6f8f7;--fg:#1b2428;--muted:#56646a;--line:#d5ddda;--accent:#0e6b62}
@media (prefers-color-scheme:dark){:root{--bg:#10171a;--fg:#e4ebea;--muted:#9aa9ac;--line:#2a3739;--accent:#55c3b6}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 "Segoe UI",system-ui,sans-serif}
main{max-width:720px;margin:0 auto;padding:32px 20px 64px}
h1{font-size:28px;line-height:1.25;margin:0 0 4px}h2{font-size:19px;margin:28px 0 6px}
p,li{margin:8px 0}ul{padding-left:22px}.sub{color:var(--muted);margin:0 0 22px}
a{color:var(--accent)}nav{display:flex;gap:16px;flex-wrap:wrap;margin:0 0 26px;padding-bottom:12px;border-bottom:1px solid var(--line)}
nav b{margin-right:auto}footer{margin-top:40px;color:var(--muted);font-size:14px}