:root{color-scheme:dark;font-family:Arial,sans-serif;background:#091426;color:#eef3fa}*{box-sizing:border-box}body{margin:0;line-height:1.8}main{max-width:850px;margin:auto;padding:48px 24px}a{color:#90c8ff}nav{display:flex;gap:24px;flex-wrap:wrap;border-bottom:1px solid #344257;padding-bottom:18px}h1{font-size:2rem}h2{margin-top:32px;font-size:1.3rem}p,li{color:#d2ddeb}footer{margin-top:48px;border-top:1px solid #344257;padding-top:18px;color:#a7b6ca}