Making a Page Like This With Theme, Plug-Ins, and Mapbox

Hi,

I’m looking to make a page with the same structure and functionality as this one: https://www.mapbox.com/maps/

I’m a strong-ish visual designer looking to make a compelling web experience by telling a story with GIS data. MapBox’s page, featuring a right-aligned sidebar with a left-aligned map that changes as you scroll down, is exactly what I want to do.

Can anyone here offer some creative solutions about re-constructing the functionality of this page with Themes, Plug-Ins, etc.? I’ve put together WordPress sites before but would appreciate guidance. Right now, I have Salient and MapBox to work with but will gladly purchase another Theme, Plug-Ins, etc. to recreate this without a lot of code.

Thanks!!!