body {
    background-color: #f0f2f5;
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

.preview-card {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.preview-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.iphone-frame {
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.page-title {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    color: white;
    padding: 12px;
    font-weight: bold;
}