# Structural Document

This document has clear hierarchical structure for testing structural chunking.

## Section 1: Introduction

This is the introduction section with some basic content.

### Subsection 1.1: Background

Background information goes here. This helps establish context.

### Subsection 1.2: Motivation

Why this topic matters and what problems it solves.

## Section 2: Main Content

The main content of the document.

### Subsection 2.1: First Topic

Detailed discussion of the first topic.

#### Sub-subsection 2.1.1: Details

Even more detailed information.

#### Sub-subsection 2.1.2: Examples

Concrete examples to illustrate the concept.

### Subsection 2.2: Second Topic

Discussion of the second topic.

## Section 3: Conclusion

Summary and final thoughts.

### Subsection 3.1: Key Takeaways

- Point one
- Point two
- Point three

### Subsection 3.2: Next Steps

What to do next after reading this document.
