Questione giuridica chiave
Whether the child maintenance amounts were arbitrarily assessed using Zurich tables and the father's rent.
Decisione estratta
The challenged reasoning was not shown to be arbitrary; the complaint largely failed or was inadmissible for lack of exhaustion.
Motivazione estratta
The federal court held that the law does not prescribe one calculation method. Zurich tables may serve as a starting point, adjusted for the concrete situation and parents' capacities. The attack on the rent finding failed because the mother did not object to closing of evidence below; the attack on the reduction for high income was not exhausted in cantonally prior proceedings.