User permission restrictions on parent page, but not on child page
I'd like to restrict editing on the top page of our site, as well as a few key child pages, while at the same time allowing users to edit pages beneath these key pages.
For example:
example.com/homepage is our parent page that we want to restrict access to.
example.com/homepage/topic1 is a child page that anyone can edit as necessary.
Because of cascading permissions, if I deny access to /homepage, then I'm denying access to all child pages.
I can, of course, deny access to /homepage, and then manually allow access to all the child pages, but this seems like a nightmare to maintain.
Do I have any options here? We recently had an issue where an author modified our landing page without checking in with the team that owns the landing page. I'm trying to figure out the best way to restrict access to the landing page, so other ideas are welcome.
Thanks!