:root{--paper:#FBF6EC;--ink:#1E2A38;--soft:#5B6675;--sea:#1F6F8B;--card:#fff}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--paper:#10202B;--ink:#EEF2F5;--soft:#A9B4BF;--sea:#5CB8D6;--card:#182C39}}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:40px 16px 64px}
header{display:flex;gap:16px;align-items:center;margin-bottom:28px}
header img{width:72px;height:72px;border-radius:16px}
h1{font-size:28px;margin:0}
h2{font-size:20px;margin:32px 0 8px;color:var(--sea)}
.sub{color:var(--soft);margin:0}
section{background:var(--card);border-radius:18px;padding:8px 22px 18px;margin-top:20px}
a{color:var(--sea)}
.lang{color:var(--soft);font-size:14px}