body{margin:0;background:#fff;color:#19243c;font:17px/1.65 system-ui,sans-serif}header,main,footer{max-width:780px;margin:auto;padding:24px}header{border-bottom:1px solid #e4e9f2}header a{font-size:26px;font-weight:800;text-decoration:none}a{color:#1748db}h1{font-size:clamp(28px,5vw,40px);line-height:1.2}h2{font-size:23px;margin-top:36px}p{overflow-wrap:anywhere}footer{border-top:1px solid #e4e9f2}a:focus-visible{outline:3px solid #1748db;outline-offset:4px}