body{margin:0;background:#f4f8f9;color:#172532;font:17px/1.65 system-ui,sans-serif}main{max-width:820px;margin:32px auto;padding:28px;background:white;border-radius:14px}nav{display:flex;flex-wrap:wrap;gap:12px 24px}a{color:#125887}h1{font-size:2rem;line-height:1.2}h2{font-size:1.3rem;margin-top:28px}footer{border-top:1px solid #ccd9df;margin-top:32px;padding-top:16px}a:focus-visible{outline:3px solid #125887;outline-offset:3px}@media(max-width:600px){main{margin:0;padding:20px;border-radius:0}h1{font-size:1.7rem}}