Phosphor green on black, square corners, outlined buttons, uppercase headings. Checkboxes in front of their label become switches (small ticks inside tables) instead of stacking above the text. Fieldsets no longer grow wider than the page; wide tables scroll inside their panel. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AeFqV9dZrK6nipHkPfyM4F