Pushed back her tangled hair.
The tangled ropes.

The Byzantine tax structure.
Byzantine methods for holding on to his chairmanship.
Convoluted legal language.
Convoluted reasoning.
The plot was too involved.
A knotty problem.
Got his way by labyrinthine maneuvering.
Oh, what a tangled web we weave.
Tortuous legal procedures.
Tortuous negotiations lasting for months.