:root{color-scheme:light}*{box-sizing:border-box}body{font:17px/1.65 system-ui,sans-serif;color:#1a1a1a;background:#fff;max-width:780px;margin:auto;padding:20px}h1{font-size:2rem;line-height:1.2}h2{font-size:1.4rem;margin-top:2rem}a{color:#064aab;text-underline-offset:3px}a:focus-visible{outline:3px solid #0b5fff;outline-offset:3px}pre{overflow-x:auto;background:#f3f3f3;padding:16px}code{overflow-wrap:anywhere;font-size:.9em}header,footer{padding:12px 0;border-bottom:1px solid #ccc}li{margin-bottom:12px}@media(max-width:480px){body{padding:16px}h1{font-size:1.7rem}}