body{margin:0;font:17px/1.65 system-ui,sans-serif;color:#15232b;background:#f4f7f9}header{background:#07111e;color:white;padding:22px max(20px,calc((100% - 850px)/2));display:flex;gap:24px;flex-wrap:wrap}nav{display:flex;gap:20px}header a{color:#58e4bf}main{max-width:850px;margin:28px auto;background:white;border-radius:18px;padding:28px;box-sizing:border-box}h1{font-size:2rem;line-height:1.2}h2{font-size:1.3rem;margin-top:32px}a{color:#006d57;overflow-wrap:anywhere}.button{display:inline-block;padding:12px 18px;border-radius:10px;background:#006d57;color:white;text-decoration:none}p{overflow-wrap:anywhere}@media(max-width:600px){main{margin:12px;padding:20px}}