- Change totals display to single horizontal line using shared CSS - Rename column headers from "Sold Prec" to "Sume Prec" (correct terminology) - Add class totals (TOTAL CLASA 1-7) and grand total to PDF export - Style class totals with light gray background, grand total with darker gray - Update CLAUDE.md with rule to use shared CSS instead of creating new styles 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>