A big smell and my biggest pet peeve with them is the excessive, custom javascript animations that don't respect my settings to disable animations and which break through my own extra defenses, all tucked away in some webpack chunk I'd have to debug to get rid of. As soon as I see above-the-fold text fade and slide in I close the tab to spare my head, stomach, and CPU.

Motion page looks much better, but other than purple I’d focus on design more, even to suggest hire a designer on project basis, let them make a stunning landing page. If you are selling a design tool (arguably CSS is somewhere in between) then you have to show your mastery of the domain. —assuming you are serious and it’s not a weekend project