Adjust Header Size Hierarchy for Better Visual Balance

[alanderex]

The current header sizes are disproportionately large, forcing content writers to use h3 tags for normal section headers. This needs to be adjusted for better readability and visual hierarchy.

Current state:

• h1 and h2 are too large for comfortable reading
• Writers must use h3 for standard section headers
• Creates confusion and extra friction for new contributors
• Visual hierarchy is skewed

Proposed changes:

1. Reduce overall size of h1 and h2 elements
2. Establish proper scaling between header levels
3. Ensure h2 is appropriate for standard section headers
4. Maintain sufficient contrast between header levels

Expected outcome:

• Improved readability
• Logical visual hierarchy
• Proper semantic HTML usage (h2 for section headers)