html{color-scheme:dark}*{box-sizing:border-box}body{margin:0;background:#07111f;color:#e8f0fe;font:18px/1.7 system-ui,sans-serif}header,main,footer{max-width:850px;margin:auto;padding:24px}nav{font-size:15px;line-height:2}a{color:#6ee7a0;text-underline-offset:4px}h1{font-size:clamp(2rem,6vw,3rem);line-height:1.15}h2{font-size:1.35rem;line-height:1.4;margin-top:2rem}p{color:#c5cfdd}a:focus-visible{outline:3px solid #6ee7a0;outline-offset:5px}.start{display:inline-block;padding:12px 18px;border:1px solid #6ee7a0;border-radius:12px}footer{font-size:14px;color:#a9b6c8}@media(max-width:500px){header,main,footer{padding:18px}}