Headlight went out

[Battercake]

Wolf Lucky 2 150 cc (Znen)

On the way to work this morning, my headlight just went completely out. No low, no high, no blue high beam indicator on the panel. All other lights, position, turn, tail, brake, etc., still working perfectly. Engine still running fine. The wiring diagram in the book doesn't seem very helpful. I'm gonna take it apart this afternoon. What should I be looking for?