:root{--ink:#1d1b26;--muted:#5b5870;--brand:#5b2cd1;--bg:#ffffff;--soft:#f5f3fb;--line:#e6e2f2}
@media (prefers-color-scheme:dark){:root{--ink:#eceaf5;--muted:#a9a5bd;--brand:#9d7bff;--bg:#121019;--soft:#1b1825;--line:#2c2838}}
*{box-sizing:border-box}
body{margin:0;font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
header,main,footer{max-width:760px;margin:0 auto;padding:0 16px}
header{display:flex;align-items:center;gap:12px;padding-top:28px;padding-bottom:20px;border-bottom:1px solid var(--line)}
header img{width:40px;height:40px;border-radius:10px}
header a{color:var(--ink);text-decoration:none;font-weight:700;font-size:20px}
nav{margin-left:auto;display:flex;gap:16px;flex-wrap:wrap;font-size:14px}
nav a{color:var(--muted);font-weight:500;font-size:14px}
main{padding-top:32px;padding-bottom:48px}
h1{font-size:30px;line-height:1.25;margin:0 0 8px}
h2{font-size:19px;margin:32px 0 8px}
p,li{color:var(--ink)}
.muted{color:var(--muted)}
a{color:var(--brand)}
.card{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:20px;margin:24px 0}
footer{border-top:1px solid var(--line);padding-top:20px;padding-bottom:40px;font-size:14px;color:var(--muted)}