body{margin:0;background:#fbf3df;color:#1d2433;font:16px/1.7 system-ui,sans-serif}header,main,footer{max-width:800px;margin:auto;padding:24px}header{border-bottom:2px solid #1d2433}header a{font-size:24px;font-weight:800;text-decoration:none}a{color:#1d2433}h1{line-height:1.2}nav{display:flex;gap:16px;flex-wrap:wrap}footer{font-size:13px;color:#6b6f7d}a:focus-visible{outline:3px solid #3b6bff;outline-offset:3px}