.nktex-sitemap {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 30px;
}

.nktex-sitemap-col h3 {
    font-size: 16px;
    margin-bottom: 10px;
}

.nktex-sitemap-col h3 a {
    font-weight: 600;
    text-decoration: none;
}

.nktex-sitemap-tree {
    list-style: none;
    margin: 0;
    padding-left: 15px;
    position: relative;
}

.nktex-sitemap-tree:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: #ccc;
}

.nktex-sitemap-tree li {
    position: relative;
    padding-left: 15px;
    margin-bottom: 6px;
}

.nktex-sitemap-tree li:before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 10px;
    height: 1px;
    background: #ccc;
}

.nktex-sitemap-tree ul {
    margin-top: 6px;
}