:root{--bg:#fff;--fg:#1a1a1f;--mut:#666;--acc:#d4202f;--card:#f6f5f2}
@media(prefers-color-scheme:dark){:root{--bg:#141417;--fg:#ececf0;--mut:#9a9aa5;--card:#1e1e23}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:760px;margin:0 auto;padding:32px 16px 64px}
h1{font-size:28px;margin:0 0 4px}h2{font-size:19px;margin:28px 0 6px}p,li{color:var(--fg)}.mut{color:var(--mut);font-size:14px}
a{color:var(--acc)}nav{display:flex;gap:16px;flex-wrap:wrap;margin:16px 0 28px}.card{background:var(--card);border-radius:12px;padding:16px 20px;margin:16px 0}