Start with a decision, not decoration
A useful product catalogue brief names the reader, the decision or action the page should support, and the evidence required before design begins. For this project the audience is customers comparing a structured range of products or variants. The working objective is to make repeated product facts comparable while preserving category navigation. Write those two statements at the top of the brief and test every proposed section against them. Material that does not help the reader understand, trust or act should be removed, shortened or placed in a secondary channel.