body{
    margin:0;
    background:#0f172a;
    font-family:Arial;
    color:#fff;
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
}
.box{
    background:#020617;
    border-radius:20px;
    padding:25px;
    width:90%;
    max-width:360px;
    text-align:center;
    box-shadow:0 0 25px #22c55e;
}
.qr{
    width:220px;
    background:#fff;
    padding:10px;
    border-radius:12px;
    margin:15px auto;
    display:block;
}
.scan{
    color:#94a3b8;
    font-size:14px;
}
#amount{
    margin-top:15px;
    font-size:26px;
    color:#22c55e;
    font-weight:bold;
}
.enable{
    position:fixed;
    top:10px;
    right:10px;
    padding:10px 14px;
    font-size:14px;
    z-index:9999;
}