:root{color-scheme:dark;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#e5eee9;background:#18212b;line-height:1.85}*{box-sizing:border-box}body{margin:0}header,main{width:min(100% - 40px,800px);margin:auto}header{display:flex;justify-content:space-between;gap:16px;padding:24px 0;border-bottom:1px solid #40514f}header>a{font-weight:700;text-decoration:none}header span,footer{color:#b8c7c5;font-size:.9rem}main{padding:28px 0 48px}h1{font-size:clamp(1.7rem,5vw,2.5rem);line-height:1.4}h2{font-size:1.2rem;margin-top:0}section{margin:32px 0}a{color:#b3f0d0;text-underline-offset:4px}a:focus-visible{outline:3px solid #f4ad79;outline-offset:5px}.button{display:inline-block;padding:10px 20px;background:#b3f0d0;color:#18212b;border-radius:10px;font-weight:700;text-decoration:none}.notice{padding:22px;background:#23362f;border:1px solid #608575;border-radius:12px}ol{padding-left:1.5em}li{padding:5px 0}dt{font-weight:700;margin-top:18px}dd{margin:4px 0 0}footer{border-top:1px solid #40514f;padding-top:24px}