body{color:#fff;background:#111;margin:0;font-family:Arial,sans-serif}*{box-sizing:border-box}.app{max-width:1100px;margin:0 auto;padding:32px}button{cursor:pointer;padding:12px 20px;font-size:16px}.hand{flex-wrap:wrap;gap:16px;display:flex}.card{color:#fff;text-align:left;cursor:pointer;background:#222;border:2px solid #555;border-radius:12px;width:160px;min-height:180px;padding:16px}