:root{color-scheme:light;font-family:system-ui,sans-serif;color:#172c32;background:#f4f7f5}body{margin:0}main{max-width:680px;margin:12vh auto;padding:32px}h1{font-size:3rem;letter-spacing:-.05em}p{line-height:1.7}a,button{display:inline-block;font:inherit;color:white;background:#136f63;padding:12px 22px;border:0;border-radius:8px;text-decoration:none;cursor:pointer}a:focus-visible,button:focus-visible{outline:3px solid #d49724;outline-offset:4px}.label{color:#4f6962;text-transform:uppercase;letter-spacing:.12em;font-size:.8rem}.card{padding:24px;background:white;border:1px solid #dce5df;border-radius:16px}button:disabled{opacity:.5}