Suggestion: Make left sidebar actually collapsible so that content can take more space when zooming on smaller screen. I'll keep using the Mobile Wikipedia extension since it allows for a better use of screen estate. https://addons.mozilla.org/en-US/firefox/addon/mobile-wikipedia-webextension/

I appreciate that some will find this an preferable to default Wikipedia, but I found nothing to like about it. It's well implemented, but it wasn't for me. Not even close.

Looks great! Very clean, professional look and comfortable to read, appreciate the lower-contrast dark mode option.

Suggestion: Since everything is bigger (fontsize, left panel, etc) the content should be full page. No need for this right margin now.

Perfect!

Suggestion: Enable making category pages wider. Example page: https://en.wikipedia.org/wiki/Category:Living_people