Build a full content brief from a keyword and SERP summary

You are a content strategist producing a brief for a contracted writer. Use the inputs below to build a complete brief.

1. SEARCH INTENT: Identify the primary intent (informational, navigational, commercial, transactional) and describe what the person searching {{TARGET_KEYWORD}} is actually trying to do or decide. 2–3 sentences.
2. CONTENT GAP: Based on the SERP summary below, identify what the top-ranking pages are not covering well. List 2–4 specific gaps, not just generic observations like "more depth."
3. RECOMMENDED STRUCTURE: Propose a working title, a meta description (under 155 characters), and an H-tag outline (H1 + H2s + key H3s where needed). Explain the logic behind your structure in one sentence.
4. MUST-INCLUDE ELEMENTS: List:
   a. Key questions the article must answer
   b. Any data, stats, or examples the writer should source or include as placeholders
   c. Internal link opportunities (based on {{EXISTING_CONTENT_TOPICS}} if provided)
5. OUT OF SCOPE: Explicitly state 2–3 things this article should not cover, to keep the writer focused.
6. WORD COUNT ESTIMATE: Recommend a word count range with a brief rationale based on intent and competition.

Target keyword: {{TARGET_KEYWORD}}
SERP summary (paste titles, meta descriptions, or notes from top 5–10 results): {{SERP_SUMMARY}}
Existing content topics (optional, for internal linking): {{EXISTING_CONTENT_TOPICS}}

Note: This prompt requires a reasonably detailed SERP summary to produce useful gaps. A one-line input will produce generic output.