:root{--bg:#f6f7fb;--fg:#14172b;--muted:#5b6078;--card:#fff;--accent:#3b6cf6}
@media (prefers-color-scheme:dark){:root{--bg:#0d1020;--fg:#eef0fa;--muted:#a3a8c3;--card:#171b31;--accent:#7aa2ff}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
main{max-width:720px;margin:0 auto;padding:40px 16px 64px}header{display:flex;gap:16px;align-items:center;margin-bottom:24px}
header img{width:72px;height:72px;border-radius:16px}h1{margin:0;font-size:32px}h2{margin-top:36px}p,li{color:var(--muted)}
.card{background:var(--card);border-radius:14px;padding:18px 20px;margin:14px 0}a{color:var(--accent)}footer{margin-top:48px;font-size:14px;color:var(--muted)}