Creating paths along a rail

Hi all,

Is there a way I can make this walkway i have created to follow the paths i have drawn out? I have projected the paths to my topography. I was thinking there much be a way to do this is grasshopper but i am quite new to it.

Paths.3dm (3.4 MB)

That is a tricky one, especially with all the conditions. What are the rules? are cutting to the top of the slope and filling in the bottom or the opposite, or are they not intended to be relatively flat?

Can everything be curved or ideally segmented?

I basically just want paths to run up and along this slope like this.