.ca-wrap{display:grid;gap:15px}
.ca-card{border:1px solid #ddd;padding:15px;border-radius:8px;background:#fff}
.ca-code{font-size:22px;font-weight:bold;margin:10px 0}
.ca-btn{padding:10px 18px;cursor:pointer}
#ca-modal{position:fixed;inset:0;background:rgba(0,0,0,.5)}
.ca-modal-box{background:#fff;max-width:400px;margin:120px auto;padding:20px;text-align:center}
#ca-real-code{font-size:28px;font-weight:bold;margin:15px}