:root{--bg:#FFF9F0;--ink:#22306B;--muted:#5A6486;--accent:#FF6A5C;--card:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#141B45;--ink:#F3F1EA;--muted:#B9C2F0;--card:#1B2451}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:40px 20px 80px}
h1{font-size:30px;line-height:1.2;margin:0 0 4px}h2{font-size:20px;margin:32px 0 8px}
.meta{color:var(--muted);font-size:14px;margin-bottom:24px}
.card{background:var(--card);border-radius:16px;padding:16px 20px;margin:16px 0}
a{color:var(--accent)}nav{font-size:14px;margin-bottom:28px}nav a{margin-right:16px}
ul{padding-left:22px}