First things first, this is great to see all these technologies unite from a community participation perspective. Kudos to everyone involved in moving it all to Discourse. It looks great!
I searched Discourse Meta to see if I could find out how you integrated the top header with the focus on each product/category, but I couldn’t find anything other than a discussion of other trying to accomplish a similar thing. Is that some kind of Discourse plugin that allows for that customization? Or is it just a new Style?