navigation screen for frame html5

How would one going about creating a graphical navigational interface for a framemaker digital project?

Working on a thick technical manual that I realize can be boiled down to a trouble-shooting flowchart. This would be a great navigational device where the user could hop to where they needed to go at a glance.

Was going to build it in Adobe Animate or some other project, exporting training manual sections from frame maker and embedding them or linking to them in the Animate project.

Wasn't thrilled by the results. Was clunky, pages had to load in and out, very inefficient.

So now I'm wondering if I could go the other way, if I could build a graphical navigation interface and import that into framemaker.

The goal is to make the interface as simple and clean as possible...though in the same token it's not something as simple as a couple hotspots.

Does anyone know of resources, sites, examples of anyone who's done something similar to what I'm describing?