body{

background:#f5f5f5;

font-family:Arial,sans-serif;

margin:0;

padding:40px;

}

.container{

background:white;

max-width:700px;

margin:auto;

padding:40px;

border-radius:12px;

box-shadow:0 10px 30px rgba(0,0,0,.12);

text-align:center;

}

h1{

margin-top:0;

}

.subtitle{

color:#666;

margin-bottom:30px;

}

button{

background:#0dbd8b;

color:white;

border:none;

padding:16px 36px;

font-size:18px;

border-radius:8px;

cursor:pointer;

}

button:hover{

background:#0ca47a;

}

#qrBlock{

margin-top:40px;

margin-bottom:40px;

display:none;

}

#qrcode{

display:inline-block;

padding:20px;

background:white;

border:1px solid #ddd;

}

#status{

font-size:20px;

font-weight:bold;

margin-top:20px;

}