Variable FOOTWORK_SLIDE_BACK_ANIMATIONConst

SLIDE STEP BACKWARD Animation (미끄럼보 후)

Korean Martial Arts Principle: 후퇴 시 선행 이동 (Rear foot retreats first)

Defensive retreat maintaining stance and guard:

1. Rear foot (right) lifts and moves 30cm backward
2. Weight transfers to rear foot (ball-of-foot landing)
3. Lead foot (left) slides backward to maintain stance width
4. Eyes stay on opponent, guard up

Weight Transfer: Lead foot → Rear foot → Balanced Landing: Ball-of-foot first (unlike forward heel-first)