hexo-theme-icarus/layout/categories.ejs

<section class="layout-wrap">
  <div class="layout-title">
    <span><%= page.title %></span>
  </div>
  <div class="layout-wrap-inner list-categories">
    <% if(site.categories.length) { %>
      <%- list_categories(site.categories) %>
    <% } %>
  </div>
</section>