body{
    margin:0;
    font-family:Arial,Helvetica,sans-serif;
    background:#f5f7fa;
    color:#222;
}

.container{
    max-width:700px;
    margin:50px auto;
    padding:40px;
    background:#fff;
    border:1px solid #ddd;
    border-radius:14px;
    box-shadow:0 10px 25px rgba(0,0,0,.08);
    text-align:center;
}

h1{
    margin-top:0;
    font-size:42px;
}

.subtitle{
    color:#666;
    margin-bottom:30px;
    font-size:18px;
}

input{
    width:100%;
    padding:16px;
    border:1px solid #ccc;
    border-radius:8px;
    box-sizing:border-box;
    font-size:16px;
}

button{
    width:100%;
    padding:16px;
    margin-top:18px;
    border:none;
    border-radius:8px;
    background:#1565c0;
    color:white;
    font-size:17px;
    cursor:pointer;
    transition:.2s;
}

button:hover{
    background:#0d47a1;
}

#qrcode{
    display:flex;
    justify-content:center;
    margin:35px 0;
}

#qrcode img,
#qrcode canvas{
    background:white;
    padding:12px;
    border:1px solid #ddd;
    border-radius:12px;
}

hr{
    margin:40px 0;
    border:none;
    border-top:1px solid #ddd;
}

.related h3{
    margin-bottom:20px;
}

.related-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
    gap:15px;
}

.related-grid a{
    display:block;
    padding:16px;
    background:#f5f7fa;
    border:1px solid #ddd;
    border-radius:10px;
    color:#222;
    text-decoration:none;
    font-weight:600;
    transition:.2s;
}

.related-grid a:hover{
    background:#1565c0;
    color:white;
}

.back-home{
    display:inline-block;
    margin-top:35px;
    color:#1565c0;
    text-decoration:none;
    font-weight:bold;
}

.back-home:hover{
    text-decoration:underline;
}