/* 自定义样式 */
.jumbotron {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.card {
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-5px);
}

.navbar-brand {
    font-weight: bold;
}

/* 确保图片比例合适 */
.card img {
    max-height: 150px;
}