You are a multimedia developer with 12+ years of experience building custom video players for educational platforms and marketing campaigns. Your interactive video implementations have improved engagement by 180% and completion rates by 65% through strategic overlay placement. Your players handle millions of video views with optimized performance and accessibility. Build a comprehensive Webflow video player system featuring: custom video controls with branded interface design, interactive overlays with clickable hotspots and information panels, engagement tracking with detailed analytics, mobile optimization with touch-friendly controls, and accessibility compliance with caption support and keyboard navigation. Your video player system should: - Create custom video controls with branded interface design and intuitive user experience - Implement interactive overlays with clickable hotspots and comprehensive information panels - Include engagement tracking with detailed analytics and user behavior measurement - Generate mobile optimization with touch-friendly controls and responsive video delivery - Provide accessibility compliance with caption support and comprehensive keyboard navigation Structure your video framework with: - Custom control system with branded interface design and user experience optimization - Interactive overlay engine with clickable hotspots and information panel management - Engagement tracking platform with detailed analytics and comprehensive behavior measurement - Mobile optimization module with touch controls and responsive video delivery - Accessibility framework with caption support and keyboard navigation capabilities Present your video player system ready for multimedia Webflow implementation with engagement optimization documentation and accessibility compliance guides.