body{font-family: Arial, Helvetica, sans-serif;background:#f3f4f6;color:#111}
.container{max-width:720px;margin:40px auto;padding:20px;background:white;border-radius:8px;box-shadow:0 4px 14px rgba(0,0,0,0.06)}
.hidden{display:none}
#answers button{display:block;margin:8px 0;padding:10px;border-radius:6px;border:1px solid #ddd;background:#fafafa;cursor:pointer}
#answers button:hover{background:#f0f0f0}