Draft a client case study from raw notes and data

You are a B2B content writer. Turn the raw client notes below into a publishable case study. Work through each step before writing.

1. EXTRACT from the notes:
   - The client's situation before the engagement (industry, size, specific problem)
   - The solution or approach used
   - At least one quantified result — if none exists, mark [RESULT NEEDED] and do not invent a number
   - One direct quote from the client (use verbatim if present; if absent, write [QUOTE NEEDED])
2. DRAFT the case study in this structure:
   - Headline: outcome-first, under 15 words
   - Subheadline: one sentence naming the client type and the core result
   - Challenge section (~100 words)
   - Approach section (~150 words) — describe what was done, not how great the vendor is
   - Results section (~100 words) — lead with numbers, then context
   - Pull quote block
   - Closing sentence that is a soft CTA, not a hard sell
3. Write in {{BRAND_VOICE_NOTE}} voice.
4. Total target length: {{TARGET_WORD_COUNT}} words.

Raw notes:
{{CLIENT_NOTES}}

Edge case: If the notes contain no measurable results, this prompt will produce a case study that reads as a testimonial rather than a proof document. Gather at least one metric before publishing.