*{box-sizing:border-box;margin:0;padding:0;font-family:Arial,sans-serif}body{display:flex;justify-content:center;align-items:center;min-height:100vh;background-color:#f0f0f5;padding:20px}.container{max-width:400px;width:100%;padding:20px;background-color:#fff;border-radius:8px;box-shadow:0 4px 10px rgba(0,0,0,.1);text-align:center}h1{font-size:1.8em;margin-bottom:15px;color:#333}#instructions{font-size:1em;margin-bottom:20px;color:#666}form{display:flex;flex-direction:column;gap:15px}label{font-size:.9em;color:#555;text-align:left}button,input[type=number],input[type=text]{width:100%;padding:12px;font-size:1em;border:1px solid #ddd;border-radius:5px;outline:0}input[type=number]:focus,input[type=text]:focus{border-color:#4caf50}button{background-color:#4caf50;color:#fff;border:none;cursor:pointer;transition:background-color .3s ease}button:hover{background-color:#45a049}.captcha-container{margin-top:15px}