actuel-inactuel/site/snippets/toc.php

<nav class="toc">
    <div class="light toc_label">table des matières</div>
    <ul>
        <?php foreach ($page->tocItems() as $item): ?>
            <li>
                <a href="#<?= $item['slug'] ?>"><?= $item['title'] ?></a>
                <?php if (!empty($item['children'])): ?>
                    <ul>
                        <?php foreach ($item['children'] as $child): ?>
                            <li><a href="#<?= $child['slug'] ?>"><?= $child['title'] ?></a></li>
                        <?php endforeach ?>
                    </ul>
                <?php endif ?>
            </li>
        <?php endforeach ?>
    </ul>
</nav>