:root{color-scheme:light dark;font-family:system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:#fff;color:#111}@media (prefers-color-scheme: dark){body{background:#0a0a0a;color:#eee}a{color:#6cf}}button{cursor:pointer;padding:.5rem .9rem;border-radius:6px;border:1px solid #ccc;background:#f6f6f6;font:inherit}button:hover{background:#eee}@media (prefers-color-scheme: dark){button{background:#1a1a1a;border-color:#333;color:#eee}button:hover{background:#222}}