{# 04 / DIFFICULTY — synthesis-curated drivers list. Spec § 4. #}
<section class="block">
  <div class="block-num">04 / DIFFICULTY</div>
  <h3>What makes this site hard (or easy)</h3>
  <p class="lede">Rather than a single 1&ndash;10 score, here&rsquo;s what we actually observed and how each factor affects effort.</p>

  {% set drivers = (report.synthesis_result.difficulty_drivers if report.synthesis_result else []) %}
  {% if drivers %}
  <ul class="drivers">
    {% for driver in drivers %}
    <li class="driver">
      <div class="driver-text">
        <strong>{{ driver.label }}</strong>
        {% if driver.explanation %}{{ driver.explanation }}{% endif %}
        <small>impact: {{ driver.severity }}{% if driver.evidence_refs %} · evidence: {{ driver.evidence_refs | join(', ') }}{% endif %}</small>
      </div>
      <span class="{{ driver.severity | severity_pill_class }}">
        {%- if driver.severity == 'high' -%}High impact
        {%- elif driver.severity == 'medium' -%}Medium
        {%- elif driver.severity == 'low' -%}Low
        {%- elif driver.severity == 'easy' -%}Easy
        {%- else -%}{{ driver.severity }}{%- endif -%}
      </span>
    </li>
    {% endfor %}
  </ul>
  {% else %}
  <p class="lede">No difficulty drivers were synthesised for this scan.</p>
  {# T18: difficulty_drivers prompt failed -- offer a free per-section #}
  {# retry. Once the rerun succeeds the `drivers` truthy branch above #}
  {# fires and the button is no longer rendered. #}
  {% if synthesis_section_failed(report, 'difficulty_drivers') %}
    {% with section_name='difficulty_drivers', section_label='difficulty drivers' %}
      {% include 'partials/retry_section.html' %}
    {% endwith %}
  {% endif %}
  {% endif %}
</section>