:root{color-scheme:dark}body{margin:0;background:#0f1623;color:#e7ecf5;font:16px/1.65 system-ui,sans-serif}main{max-width:720px;margin:auto;padding:30px 20px 60px}a{color:#9bc5ff}h1{font-size:clamp(24px,5vw,34px);line-height:1.25}h2{font-size:18px}label{display:grid;gap:6px;margin:18px 0}input,select,button,.button{box-sizing:border-box;font:inherit;padding:11px;border:1px solid #64758b;border-radius:6px;background:#172538;color:inherit;max-width:100%}button,.button{display:inline-block;background:#294d76;cursor:pointer;text-decoration:none}pre{font:inherit;white-space:pre-wrap;overflow-wrap:anywhere;border:1px solid #536174;padding:16px;border-radius:6px}:focus-visible{outline:2px solid #9bc5ff;outline-offset:2px}