Start with the atmosphere
A good brief is not only a checklist. It should tell us what the brand should feel like when someone lands on the page.
That feeling becomes a filter for layout, copy rhythm, color, and interaction choices.
Then define the job
Once the atmosphere is clear, the page still needs a job: build trust, explain the offer, show taste, generate leads, or guide exploration.
The strongest briefs keep emotion and function in the same room.