Thanks, GreatWhiteFish!
Grendel, the GScholar keyword you're looking for is "Deep CFR". It's like regular CFR on the current street, but instead of solving future streets, you abstract the values using a neural network.
DeepCFR
DREAM
DeepSolver
There are plenty of implementations; It's an evolving field, and I might be wrong about some of the details here. But as I understand it, you encode the ranges and board state into an input, then try to predict the regrets or EV of your hands as an output.