.qrqh-box{max-width:650px;margin:40px auto;padding:30px;background:#f9fbff;border-radius:12px;box-shadow:0 5px 20px rgba(0,0,0,.1);text-align:center}
.qrqh-box h1{color:#0b3c5d}
.qrqh-box .desc{color:#555;margin-bottom:20px}
.qrqh-box input{width:100%;padding:12px;font-size:16px}
.qrqh-box button{margin-top:15px;padding:12px 30px;background:#0073aa;color:#fff;border:none;border-radius:6px;font-size:16px;cursor:pointer}
.qr-result img{margin:20px 0}
.qr-result .note{color:green}
.qr-result .download{display:inline-block;margin-top:10px;background:#28a745;color:#fff;padding:8px 20px;border-radius:5px;text-decoration:none}