body {
    min-height: 100vh;
    background: linear-gradient(135deg, #2193b0 0%, #6dd5ed 100%);
    color: #fff;
}
.navbar {
    background: rgba(33, 147, 176, 0.95);
}
.card {
    background: rgba(255,255,255,0.9);
    color: #222;
}
.section-title {
    color: #2193b0;
}
.explanation {
    background: #e3f2fd;
    color: #1565c0;
    border-radius: 5px;
    padding: 10px;
    margin-top: 10px;
}
.kiwicoins {
    font-weight: bold;
    color: gold;
}
.shop-btn {
    margin-right: 5px;
}