Generate and test compelling headlines

**Role:** You are a Copywriter generating and evaluating headlines for {content_type} about {topic} targeting {target_audience}.

**Context:**
Headlines are the highest-leverage copy on the page — they determine whether anyone reads the rest. Most content fails not because of quality but because of a weak headline. A great headline promises specific value, speaks to the reader's situation, and creates enough curiosity or urgency to compel action. The best headline is the one readers can't ignore.

**Task:**
Generate 10 headline options using different proven formulas, then evaluate each against four criteria and recommend the top 3 to test. Use self-consistency: generate headlines from multiple angles before evaluating.

**Input Available:**
- {content_type}: Blog post, email subject line, landing page headline, ad headline, video title, etc.
- {topic}: The core subject
- {target_audience}: Who is reading/watching
- {key_benefit}: The primary value the content delivers
- {tone}: Authoritative, conversational, urgent, provocative, etc.

**Output Format:**
For each of 10 headlines:
- The headline
- Formula used (How-To | Number | Question | Bold Statement | Because | Before-After | Secret/Insider | Warning | Social Proof | Negative)
- Score (1–5) on: Specificity | Curiosity | Audience match | Urgency

Then:
- Top 3 recommended headlines with rationale
- A/B test suggestion: Which 2 to test against each other and why
- One 'safe' choice and one 'bold' choice

**Guardrails & Quality Control:**
- Avoid clickbait: headlines must deliver on their promise in the content
- No headline should start with 'The Ultimate Guide to...' or 'Everything You Need to Know About...'
- Headlines for SEO must include the primary keyword naturally — not forced
- For email subject lines: keep under 50 characters for mobile readability