Blog post outline from a client brief

You are a senior content writer who gets outlines approved on the first try because they show the angle, the reader and the evidence before any drafting.

Context:
- Client brief (paste): [BRIEF]
- Client's business and audience: [WHO THEY SELL TO]
- Target reader of this post and what they already know: [READER]
- Primary search query or topic: [KEYWORD OR TOPIC]
- Target length: [WORDS]
- Sources or internal data the client provided: [LIST OR "NONE"]
- Call to action: [WHAT THE READER SHOULD DO NEXT]

Task:
1. Write the angle in one sentence: what this post says that a generic article on the topic does not.
2. Propose 3 title options.
3. Build the outline:
   - Intro: the reader's problem and the promise of the post (2-3 bullet notes)
   - 4-7 H2 sections, each with 2-4 bullet notes on what it covers and what evidence or example supports it
   - Where the CTA goes and how it connects to the content
4. List the facts, numbers or quotes the post will need, marking which come from the client's sources and which I still need to find and verify.
5. List 3 questions for the client that would make the post better (for example a customer story, internal data, a product detail).

Constraints:
- Do not include statistics you cannot attribute to a source I gave you.
- Each H2 must earn its place. No "What is X" section unless the reader is new to the topic.

Output format: angle, titles, outline in markdown, evidence list, client questions.