Standalone HTML escape room for 7th-grade math class inspection lesson.
6 systems-of-equations problems on an illustrated map of Humulești (Ion Creangă theme).
Single file (1.2MB) with embedded fonts (Playfair Display + Nunito WOFF2 subsets),
base64 background image, and all CSS/JS inline. Works fully offline.
Features: parchment overlays that reveal on solve, Kahoot-style answer buttons,
10-heart system with hint costs, custom confirmation dialogs, confetti victory screen,
and an editable PROBLEMS array in the first 80 lines for teacher customization.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>