:root{color-scheme:light dark;--bg:#F4F6F9;--card:#FFFFFF;--text:#0E1622;--text2:#4A5566;--accent:#0B7A66;--line:#D8DEE6}
@media (prefers-color-scheme:dark){:root{--bg:#070B12;--card:#111823;--text:#EEF2F7;--text2:#A5B0C0;--accent:#4DDBBD;--line:#243042}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 -apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",sans-serif}
main{max-width:760px;margin:0 auto;padding:40px 20px 64px}
header{display:flex;align-items:center;gap:14px;margin-bottom:8px}
header svg{flex-shrink:0}
h1{font-size:30px;line-height:1.2;margin:0}
h2{font-size:20px;margin:32px 0 8px}
p,li{color:var(--text)}
.muted{color:var(--text2);font-size:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px 20px;margin:20px 0}
a{color:var(--accent)}
nav{display:flex;gap:16px;flex-wrap:wrap;margin:12px 0 24px;font-size:15px}
hr{border:0;border-top:1px solid var(--line);margin:48px 0}