/* 侧边栏标题链接样式 */
.sidebar-header {
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.sidebar-header a {
    text-decoration: none;
    color: inherit;
}

.sidebar-header h2 {
    color: var(--primary-color);
    font-size: 18px;
    margin: 0;
    font-weight: 600;
    cursor: pointer;
}

.sidebar-header h2:hover {
    color: var(--primary-dark);
}