- Tighten line spacing from 1.8 to 1.6 for better readability
- Reduce header margins for more compact appearance
- Add educational links (Binder, Colab) with proper URLs
- Fix time duplication in badges (use difficulty stars instead)
- Simplify setup module content for better clarity
- Improve content hierarchy with proper nesting
- Professional ML Engineering Skills section now properly organizes steps
- Consistent badge formatting across all modules
- More compact and professional appearance overall
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