:root{color-scheme:dark;--bg:#050a1a;--panel:#0a1730;--text:#eef5ff;--muted:#a8b8d2;--cyan:#60eaff;--line:rgba(160,195,255,.2);font-family:system-ui,-apple-system,'Segoe UI',sans-serif}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% 0,#102b5b,#050a1a 38%);color:var(--text);line-height:1.7}a{color:var(--cyan)}header,main,footer{width:min(850px,calc(100% - 36px));margin:auto}header{padding:32px 0 18px;border-bottom:1px solid var(--line)}header a{text-decoration:none;font-weight:800}main{padding:42px 0}h1{font-size:clamp(34px,7vw,55px);line-height:1.05;margin:.3em 0}h2{margin-top:2em;font-size:23px}p,li{color:var(--muted)}.notice{padding:16px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--text)}footer{padding:25px 0 45px;border-top:1px solid var(--line);display:flex;gap:18px;flex-wrap:wrap}@media(max-width:520px){main{padding:28px 0}h2{font-size:20px}}