:root{--bg:#E4E1DA;--text:#161616;--muted:#55524B;--primary:#1F4FFF;--card:#FFFFFF;--border:#CFCBC2}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#161616;--text:#F2F0EA;--muted:#B5B1A8;--primary:#7F9BFF;--card:#222120;--border:#3A3835}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
main{max-width:720px;margin:0 auto;padding:32px 16px 64px}
header{display:flex;align-items:center;gap:12px;margin-bottom:24px}
.logo{width:44px;height:44px;border-radius:12px;background:var(--primary);display:grid;place-items:center}
.logo svg{width:34px;height:34px}
h1{font-size:30px;line-height:1.2;margin:8px 0}
h2{font-size:20px;margin:32px 0 8px}
.muted{color:var(--muted);font-size:15px}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px 20px;margin:16px 0}
a{color:var(--primary);font-weight:600}
nav a{margin-right:16px}
ul{padding-left:22px}