Key legal question
Whether the cantonal court's determination of the wife's maintenance was arbitrary
Extracted holding
Yes. The appellate court could not treat CHF 4,000 as the wife's 'proper maintenance' and limit support accordingly without sufficient factual basis or clarification of the calculation method.
Extracted reasoning
The lower court contradicted the first instance's own calculation logic, ignored that the amount had been derived from an excess-sharing model, and failed to explain or verify the factual basis for converting that amount into a ceiling for the wife's maintenance.