:root{color-scheme:dark;--bg:#071632;--panel:#152b55;--text:#ecf3ff;--muted:#b2ccea;--accent:#ffe5a8}*{box-sizing:border-box}html{font:16px/1.65 system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text)}body{margin:0}header,main,footer{max-width:860px;margin:auto;padding:20px 26px}header{padding-top:35px}nav{display:flex;flex-wrap:wrap;gap:15px;margin-top:16px}a{color:#b8e9ff;text-underline-offset:3px}a:focus-visible{outline:3px solid #ffe5a8;outline-offset:3px}article{background:var(--panel);border:1px solid #6d8cb0;border-radius:22px;padding:clamp(18px,4vw,36px)}h1{font-size:clamp(1.8rem,5vw,2.7rem);color:var(--accent);line-height:1.17}h2{font-size:1.23rem;color:var(--accent);margin-top:1.8em}p,li{max-width:70ch}p{margin:14px 0}small,footer{color:var(--muted)}.notice{border-left:3px solid #ffe5a8;padding:12px 17px;background:#243b66}footer{padding-bottom:35px}@media(max-width:600px){header,main,footer{padding-left:14px;padding-right:14px}}