Not sure if this is an upstream issue with pydata-sphinx-theme - but when loading the docs on mobile, or just with a narrow screen, they look like this, which makes them unreadable. Tested in firefox and chrome, though sometimes chrome doesn't show the in-page TOC at all, which is interesting.

If this is an upstream issue with the theme, feel free to close, just wanted to put on your radar

Mobile (simulated):

Related to PyOS review: pyOpenSci/software-submission#81