How to display a particular nested section differently

Do you mean “a particular template” instead?

Do you mean “displayed differently” instead?

I am trying to figure out whether you want to render things differently on list pages, or on content pages, or both.

It would be easier to help you if you were to share your code. See:
https://discourse.gohugo.io/t/requesting-help/9132

Let us see your code

Include a link to the source code repository of your project, because we really need the context of seeing your templates and partials to be able to help you. It is trivial to do a quick git clone on your repo, then run hugo server in your project, to help you out. On the other hand, recreating your code from screenshots, or sort of guessing at it, is not.

If you can’t share your repository for whatever reason, consider creating a dummy repo that you can share, which reproduces the problem you’re experiencing.