I like the design of the main page and the secondary pages a lot individually but they seem disconnected. I would try to figure out a way to integrate them together. I wonder if keeping the initial frame on all the pages is doable?
Also, have you tried centering the frame on the main page?
That said, I really like the concept visually. It looks like the glyph you’re using is the Hebrew tree of life. Is that where you got the idea from?