:root{color-scheme:light dark;--fg:#141827;--muted:#5b6275;--bg:#fff;--accent:#4B2BEE;--line:#e6e8f0}
@media (prefers-color-scheme:dark){:root{--fg:#eef0f7;--muted:#a3a9bb;--bg:#0b1023;--accent:#9d8bff;--line:#262c45}}
*{box-sizing:border-box}body{margin:0;font:16px/1.6 -apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--fg);background:var(--bg)}
header,main,footer{max-width:760px;margin:0 auto;padding:16px}header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;border-bottom:1px solid var(--line)}
.brand{font-weight:800;font-size:20px;color:var(--accent);text-decoration:none}nav a{margin-left:16px;color:var(--fg)}
h1{font-size:30px;margin:24px 0 4px}h2{font-size:19px;margin:24px 0 4px}.meta,.lead{color:var(--muted)}a{color:var(--accent)}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:14px;margin-top:32px}