This is a great example of simple design winning out. Great design, great illustration and really straightforward copy make this one of the better product websites out there.
Fitts’s Law: Why the Easy Button Wins
Large, close targets are faster to hit than small, distant ones, that’s Fitts’s Law. A look at the 1954 rule behind buttons, prime and magic pixels, thumb zones, and dark patterns.
I like the colors of the user guidance. However, I think there is a lack of synergy. as indicated by the download button, which should be the same color in the navigation. Blue download, blue link.