Here is the link to the other post: Half on half layout in sections – one half scrolling other one static
I also wrote detailed instructions for myself to create the half-scrolling layout, if you want more of a step-by-step and less of a hint.
The hero animation was made in After Effects and exported to a script using a plugin called Bodymovin. Tough to figure out in terms of integration with Webflow, but if you want tips, just let me know. I resolved so many issues just trying to add it to my site, I think I must be some kind of expert now lol.