:root{font-family:system-ui,-apple-system,sans-serif;color:#172033;background:#fafaf9;font-size:17px;line-height:1.8}*{box-sizing:border-box}body{margin:0}header,main,footer{max-width:820px;margin:auto;padding:24px}header{border-bottom:1px solid #d6d3d1}.brand{font-size:1.4rem;font-weight:800}nav{display:flex;flex-wrap:wrap;gap:10px 24px;margin:16px 0}a{color:#a33300;text-underline-offset:4px;overflow-wrap:anywhere}a:focus-visible{outline:3px solid #a33300;outline-offset:5px}h1{font-size:clamp(1.5rem,5vw,2.2rem);line-height:1.4}h2{font-size:1.25rem;line-height:1.5;margin-top:28px}section{margin:40px 0;scroll-margin-top:20px}section+section{border-top:1px solid #d6d3d1;padding-top:32px}.notice{background:#fff3e8;border-inline-start:4px solid #a33300;padding:16px}.muted,footer{color:#57534e}footer{border-top:1px solid #d6d3d1}.skip{position:absolute;left:12px;top:-100px;background:white;padding:12px}.skip:focus{top:12px}@media(max-width:480px){header,main,footer{padding:18px}nav{gap:12px 18px}}