:root{color-scheme:dark}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,sans-serif;background:#121212;color:#eee}main{max-width:900px;margin:0 auto;padding:24px;display:flex;flex-direction:column;gap:16px}h1{margin:0;font-size:20px;letter-spacing:.02em;color:#c9a86a}.prompt{font-size:16px;color:#aaa}.answer-input{width:100%;max-width:320px;padding:10px 12px;font-size:18px;background:#1e1e1e;border:1px solid #444;border-radius:4px;color:#eee;font-family:monospace}.answer-input:focus{outline:2px solid #e87b3a;outline-offset:1px}.answer-input:disabled{opacity:.6}.feedback{min-height:36px;padding:8px 12px;border-radius:4px;font-family:monospace}.feedback-empty{background:transparent}.feedback-correct{background:#1e3a1e;color:#7fdc7f}.feedback-wrong{background:#3a1e1e;color:#ff7f7f}.stats{display:flex;gap:20px;font-size:13px;color:#aaa;font-family:monospace}.stats strong{color:#eee}