Improve code block styling, fix blockquote quotes, and adjust typography consistency

[modernchina123]

Summary

This PR improves code block visual styling, fixes blockquote quote display, and ensures typography consistency across blog posts.

Changes

Code Block Styling

• 🎨 Removed line-level backgrounds: Fixed issue where each line of code had its own background color/shadow
• 🎨 Improved code block appearance: Added proper background, border, and padding for better visual consistency
• 🎨 Code block container styling: Applied gray background (#f9fafb) with rounded corners and proper spacing

Blockquote Improvements

• ✨ Removed auto-generated quotes: Fixed Tailwind Typography automatically adding quotes to blockquotes
• ✨ Typography consistency: Adjusted blockquote line-height to match body text (leading-[1.7] md:leading-[1.8])
• ✨ Maintained blockquote format: Kept blockquote visual styling (left border, indentation) while removing unwanted quotes

Typography Consistency

• 📝 List item line-height: Adjusted list items to match body text line-height for better readability
• 📝 Blockquote line-height: Ensured blockquotes have consistent spacing with body paragraphs

Post Content Updates

• 📄 Title hierarchy adjustment: Changed heading levels in ERC-8004 post (H1→H2, H2→H3, H3→H4)
• 🔗 Link format fixes:
  • Fixed Data Lineage link format in interview post
  • Fixed Hugging Face link format in robotics post
• 🧹 Code cleanup: Removed extra blank lines after code blocks

Configuration

• ⚙️ Rouge syntax highlighter: Disabled line numbers in _config.yml to improve code block rendering

Technical Details

• Added CSS rules to remove backgrounds from Rouge syntax highlighter elements
• Used !important flags to override Tailwind Typography defaults
• Targeted both Tailwind classes and custom CSS for maximum compatibility

Files Changed

• _config.yml - Rouge configuration
• _includes/head.html - Code block and blockquote CSS fixes
• _layouts/post.html - Typography consistency adjustments
• _posts/2025-12-14-ERC-8004 × Codatta: The Reconstruction Episode — I Became You When I Grew Up.markdown - Title hierarchy and content updates
• _posts/2025-12-19-open-robotic-data-at-scale-ecosystem-formation-and-implications.markdown - Link format fix
• _posts/2025-12-25-the-minds-behind-the-data-what-we-learned-from-our-top-contributors.markdown - Link format fix

Testing

• ✅ Local preview verified
• ✅ Code blocks display correctly without line backgrounds
• ✅ Blockquotes show without auto-generated quotes
• ✅ Typography consistency verified across all post types