Mesh Split/Trim/Difference?

Hi.

I think it should be pretty easy but I've been trying to connect wires everywhere and none of the options was right. I have used Mesh Split, Mesh Trim and Mesh Difference.

As you can see in the picture below, I have a Voronoi mesh (red) and a solid mesh (green).

I just need the Voronoi mesh that is inside the solid mesh, so just cut off the parts that are outside of the green panel.

Unfortunately I cannot upload the .gh file because it is over 5 MB...