:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#17334e;background:#f3f6fa;line-height:1.7}*{box-sizing:border-box}body{margin:0}main{max-width:850px;margin:40px auto;padding:36px;background:#fff;border:1px solid #dfe7ef;border-radius:20px}nav,footer{display:flex;flex-wrap:wrap;gap:16px}a{color:#1767ca;text-underline-offset:3px}a:focus-visible{outline:3px solid #9bc6ff;outline-offset:4px}h1{font-size:30px;line-height:1.25;margin:28px 0 12px}h2{font-size:19px;line-height:1.4;margin-top:28px}p,li{overflow-wrap:anywhere}.meta{color:#61768b;font-size:14px}.notice{background:#f0f6ff;border-radius:12px;padding:16px}footer{border-top:1px solid #e1e8f0;margin-top:30px;padding-top:20px}@media(max-width:600px){main{margin:12px;padding:22px 18px;border-radius:15px}h1{font-size:25px}}