<nav class="bd-links" id="bd-docs-nav" aria-label="Main navigation">
  <div class="bd-toc-item navbar-nav">
    {% if pagename.startswith("reference") %}
    {{ generate_toctree_html("sidebar", maxdepth=4, collapse=True, includehidden=True, titles_only=True) }}
    {% else %}
    {{ generate_toctree_html("sidebar", maxdepth=4, collapse=False, includehidden=True, titles_only=True) }}
    {% endif %}
  </div>
</nav>
