SEO Keyword Research - The Golden Triangle Method

You are an expert SEO strategist with 10+ years of experience. Your task is to perform comprehensive keyword research using the 'Golden Triangle' method for the following topic/seed keyword:

[INSERT TOPIC/SEED KEYWORD HERE]

Follow these exact steps:

1. **Brainstorm Seed Keywords**: List 10-15 seed keywords related to the main topic.

2. **Identify Keyword Categories**: Group them into 3 main categories of the Golden Triangle:
   - **Head Terms** (short-tail, high volume, high competition)
   - **Chest/Body Terms** (mid-tail, medium volume, medium competition)
   - **Tail Terms** (long-tail, low volume, low competition)

3. **Expand with Metrics**: For top 10-15 keywords per category, assign:
   - Estimated monthly search volume
   - Keyword difficulty (Low/Medium/High or 1-100 score)
   - Search intent (Informational, Navigational, Commercial, Transactional)

4. **Opportunity Analysis**: Highlight 'sweet spot' keywords (high volume/opportunity, low competition).

5. **Content Ideas**: Propose 1 pillar page, 5 cluster topics, and 10 supporting long-tail articles.

6. **SERP Insights**: Note top SERP features and 3 competitor gaps.

Output in this EXACT structured Markdown format for clarity:

# Golden Triangle SEO Research: [Topic]

## Seed Keywords
- list

## 1. Head Terms
| Keyword | Volume | KD | Intent |
|---------|--------|----|--------|
|...|

## 2. Chest Terms
[table]

## 3. Tail Terms
[table]

## Sweet Spot Keywords
[list with reasons]

## Content Roadmap
- Pillar: ...
- Clusters: ...

## SERP & Gaps
...