:root{color-scheme:light dark}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.6;background:#fff;color:#1a1a1a}@media (prefers-color-scheme:dark){body{background:#111;color:#eee}a{color:#8ab4ff}}main{max-width:680px;margin:0 auto;padding:32px 16px 64px}h1{line-height:1.2}nav{display:flex;gap:16px;flex-wrap:wrap;margin-top:32px;font-size:.95rem}