I'm working on an e-commerce site and I'm considering using the nested doll approach for the content pages. You can currently access the shop via the nav on content pages however I wanted to remove the shop nav to add more focus to the article content.

On mobile this method works, as I would swap out the current navigation with a back button as per the diagrams.

I guess my question is regarding desktop. Should I allow the user to access all the navigation items? On mobile I'm removing them to add focus to the content which I would still like to do with desktop however there is more real estate on desktop so should I go for the increased focus of removing the shop nav? Or should I allow the user to return to the shop if they need to? The only way they would be able to get to the shop would be by clicking the logo.