body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f8fafc;
    color: #0f172a;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
}
.container {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    max-width: 500px;
    width: 90%;
    margin: 20px;
    box-sizing: border-box;
}
h1 {
    margin-top: 0;
    font-size: 24px;
    color: #1e293b;
}
p {
    color: #64748b;
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 25px;
}
.qr-box {
    border: 4px solid #10b981;
    border-radius: 16px;
    padding: 10px;
    display: inline-block;
    margin-bottom: 20px;
    background: white;
}
.qr-box img {
    display: block;
    width: 200px;
    height: 200px;
}
.stores {
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: center;
    margin-top: 15px;
    flex-wrap: wrap;
}
.store-badge-link {
    display: inline-block;
    line-height: 0;
    text-decoration: none;
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), filter 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.store-badge-link:hover {
    transform: translateY(-2px);
    filter: drop-shadow(0 4px 10px rgba(0,0,0,0.2));
}
.store-badge {
    height: 44px;
    width: auto;
    display: block;
    border-radius: 6px;
}
.instruction {
    background: #f1f5f9;
    padding: 15px;
    border-radius: 10px;
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.4;
}