{% assign nextprev__item = site.data.sitenav_index[include.path] %}
{% if include.top %}
  {% assign nextprev__top = include.top %}
{% else %}
  {% assign nextprev__top = "/" %}
{% endif %}
{% capture nextprev__top_length %}{{ nextprev__top | size }}{% endcapture %}
{% assign nextprev__prev = nextprev__item.prev %}
{% assign nextprev__next = nextprev__item.next %}
{% capture nextprev__next_prefix %}{{ nextprev__next.url | truncate:nextprev__top_length,'' }}{% endcapture %}
{% capture nextprev__prev_prefix %}{{ nextprev__prev.url | truncate:nextprev__top_length,'' }}{% endcapture %}
<nav class="article-nav">
  {% if nextprev__prev and nextprev__prev_prefix == nextprev__top %}
    <a href="{{ site.baseurl }}{{ nextprev__prev.page.url | replace:'index.html','' }}" class="article-nav-link article-nav-link--prev">
      <p class="article-nav-count">{{ nextprev__prev.page.title }}</p>
      {% if nextprev__prev.page.description %}
        <p class="article-nav-description">{{ nextprev__prev.page.description }}</p>
      {% endif %}
    </a>
  {% else %}
    <span class="article-nav-link"></span>
  {% endif %}
  {% if nextprev__next and nextprev__next_prefix == nextprev__top %}
    <a href="{{ site.baseurl }}{{ nextprev__next.url | replace:'index.html','' }}" class="article-nav-link article-nav-link--next">
      <p class="article-nav-count">{{ nextprev__next.page.title }}</p>
      {% if nextprev__next.page.description %}
        <p class="article-nav-description">{{ nextprev__next.page.description }}</p>
      {% endif %}
    </a>
  {% else %}
    <span class="article-nav-link"></span>
  {% endif %}
</nav>