Utilising brand.yml for Navbar font

I've created a brand.yml (absolutely love the functionality this brings) and applied it to a website. Unfortunately the font spec which I'm using for "base" is also being used, by default for the Navbar menu entries. I've tried without success to use one of the other fonts from brand.yml

Please note I'm not a coder and css is a complete and frustrating mystery for me.

Is there a simple way to use brand.yml to specify the Navbar menu fonts, in the same way that you can use it to simply specify base and headings fonts? I've searched the documentation but can't get it to do the job.

This could definitely be an issue to fix. Can you open an issue in quarto-dev/quarto-cli Github repo with an example ?

Thank you.