body{margin:0;background:#fff;color:#182328;font:18px/1.65 system-ui,sans-serif}header,main,footer{max-width:760px;margin:auto;padding:24px}header{border-bottom:1px solid #d9e0e3}nav{display:flex;gap:24px;flex-wrap:wrap}a{color:#12624e;text-underline-offset:4px}h1{font-size:2.25rem;line-height:1.2;margin:32px 0}h2{font-size:1.3rem;margin-top:36px;line-height:1.35}li{margin:12px 0}footer{font-size:1rem;border-top:1px solid #d9e0e3}a:focus-visible{outline:3px solid #12624e;outline-offset:4px}@media(max-width:480px){header,main,footer{padding:20px}h1{font-size:1.9rem}}