:root{color-scheme:light dark;--bg:#f6f7f8;--fg:#14181d;--mute:#4a525c;--line:#e3e6ea;--acc:#0d7f74}
@media (prefers-color-scheme:dark){:root{--bg:#111315;--fg:#eceef0;--mute:#b4bac1;--line:#2a2f34;--acc:#2bb3a3}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.7 system-ui,"Segoe UI",sans-serif}
main{max-width:720px;margin:0 auto;padding:48px 20px}header{display:flex;align-items:center;gap:14px;margin-bottom:32px}
header img{width:48px;height:48px;border-radius:12px}header b{font-size:20px}nav{display:flex;gap:18px;font-size:14px;margin-bottom:32px}
a{color:var(--acc)}h1{font-size:28px;margin:0 0 8px}h2{font-size:18px;margin:32px 0 8px}p,li{color:var(--mute)}
footer{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--mute)}