Page Outline Readability & Personalization

In long documents, the current outline view (using only indentation and spacing) makes it hard to visually distinguish parent–child sections, increasing cognitive load when navigating.

It would be great to introduce optional visual modes for better readability and personalization — for example:

Hierarchy line view → subtle connecting lines between parent and sub-sections.

Color-grouped view → pastel tones where each parent shares a lighter shade with its subs.

This would let users choose their preferred visual style, improving clarity and reducing mental effort while keeping the minimalist look.