:root{color-scheme:light}body{margin:0;background:#f3f6fa;color:#17263e;font:16px/1.7 system-ui,"Microsoft YaHei",sans-serif}main{max-width:760px;margin:8vh auto;padding:40px 28px;background:#fff;border:1px solid #d8e1ed;border-radius:16px}.eyebrow{font-size:13px;color:#18748a;letter-spacing:.07em}h1{font-size:clamp(26px,4vw,40px);line-height:1.3}aside{margin:28px 0;padding:20px;border-radius:8px;background:#eff6fb}aside p{margin-bottom:0}button{background:#17758b;color:#fff;border:0;border-radius:8px;padding:14px 24px;font:inherit;font-weight:700;cursor:pointer}button:disabled{opacity:.7}a{color:#176b80}nav{display:flex;gap:24px;flex-wrap:wrap}#status{min-height:28px}@media(max-width:600px){main{margin:20px 12px;padding:28px 20px}}