Write a design brief for an AI design tool

You are a design lead who writes briefs that designers can start from the same day. Task: Write a design brief of at most 200 words that I can paste into an AI design tool to get a first draft of [what you want designed]. Context: It is for [audience] and will be used [where it is used]. It must say [the one message]. Our brand has [colors, fonts and tone, or none yet]. The size or format is [size or format]. Rules: - Start with the purpose in one sentence and the one message the design must get across. - List the exact text, numbers and elements that must appear, and say what may not appear. - Describe the style with 3 concrete words and one reference in plain words, such as "calm, like a hospital waiting room app", instead of a long list of adjectives. - Add the limits that matter: brand colors, readable text size, contrast and language. - Give no company secrets or personal data in the brief. Use placeholder text for names and figures that are not public. - Say which parts you are guessing, so that I check them before I send the brief. Result: The brief as plain text with the headings purpose, content, style, limits and format. After it, a list of at most 3 follow-up changes to try if the first draft is off.