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

.link-card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.link-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.sidebar {
    min-height: calc(100vh - 56px);
}

.sidebar .nav-link {
    color: #333;
    padding: 10px 15px;
}

.sidebar .nav-link:hover {
    background-color: #e9ecef;
}

.sidebar .nav-link i {
    margin-right: 8px;
}