Changing “Columns” layout on Search Results Page Only

I'm using both GeneratePress Pro and GenerateBlocks Pro.

I've gone into the Customizer (Layout > Blog) and changed the settings for "Columns" to "Display posts in columns" and set my columns to 2. This is exactly the look I want for both my blog page, as well as my category and tag archive pages.

That's working like a charm!

However, I'm working on a "search results" page layout and it is inheriting that same 2-column layout.

What I'd prefer on the search results page is a single column layout (think more like the Google search results we're used to).

I imagine this will take a line of code somehwere, but I don't have the foggiest idea of where to start.

Any help would be greatly apprecaited!