<task>Create a case study outline.</task>
<context>
<customer_context>
Customer Context</customer_context>
<problem>
Problem</problem>
<solution>
Solution</solution>
<results>
Results</results>
<proof_points>
Proof Points</proof_points>
<audience>
Audience</audience>
<tone>
Tone</tone>
</context>
<instructions>
Use only the provided customer facts and results.
Build a clear narrative from problem to outcome.
Highlight evidence and proof without inventing claims.
</instructions>
<output>
Return headline options, executive summary, case study outline with sections, suggested pull quotes or proof callouts, and open information gaps to fill.
</output>