:root{color-scheme:light;font:18px/1.65 system-ui,sans-serif;color:#203047;background:#f3f5f7}
*{box-sizing:border-box}body{margin:0}main{max-width:820px;margin:40px auto;padding:36px 40px;background:white;border:1px solid #dde3e9;border-radius:12px}
nav{display:flex;gap:24px;flex-wrap:wrap;border-bottom:1px solid #dde3e9;padding-bottom:20px;margin-bottom:32px;font-size:16px}nav [aria-current]{font-weight:700}
a{color:#1857ac;text-underline-offset:3px}h1{font-size:2rem;line-height:1.2}h2{font-size:1.2rem;margin-top:32px}footer{border-top:1px solid #dde3e9;margin-top:36px;padding-top:20px;font-size:14px;color:#536173}
@media(max-width:600px){main{margin:0;padding:24px;border:0;border-radius:0}nav{gap:18px}h1{font-size:1.7rem}}