:root{color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:#07080f;color:#cbd5e1;font:16px/1.8 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}header,main,footer{max-width:900px;margin:auto;padding:24px}header{display:flex;gap:18px;flex-wrap:wrap;align-items:center;border-bottom:1px solid #263048}a{color:#67e8f9;text-underline-offset:3px;overflow-wrap:anywhere}header a{text-decoration:none}h1{font-size:clamp(28px,5vw,42px);line-height:1.2;color:#fff}h2{font-size:24px;color:#fff;margin-top:40px}h3{font-size:18px;color:#fff;margin-top:28px}p{overflow-wrap:anywhere}.meta{color:#94a3b8;font-size:14px}.language{padding:18px;border:1px solid #263048;border-radius:12px;background:#131628}footer{border-top:1px solid #263048;font-size:14px}section{scroll-margin-top:20px}