Introduction

This is a test page to demonstrate the new Table of Contents feature. The TOC should appear as a fixed icon in the top-left corner.

Main Content

Here we have the main content of the article. You should see various heading levels below.

Subsection 1

This is a level 3 heading. The TOC should show this with proper indentation.

Sub-subsection 1.1

This is a level 4 heading, which should be further indented in the TOC.

Deep Section 1.1.1

This is a level 5 heading for testing deep nesting.

Very Deep Section

This is a level 6 heading, the deepest level we support.

Subsection 2

Another level 3 heading to test the TOC navigation.

Advanced Features

This section covers the advanced features of our website.

Code Blocks

We also support enhanced code blocks:

function greet(name) {
  console.log(`Hello, ${name}!`);
}

Math Expressions

We support mathematical expressions using KaTeX.

Conclusion

This concludes our TOC test. The Table of Contents should help readers navigate through all these sections easily.