Act as a senior digital marketing strategist with 10+ years of experience in brand safety and community management. Design a comprehensive AI content moderation system for [SOCIAL MEDIA PLATFORM] that automatically filters [TYPE OF CONTENT] while maintaining [BRAND VOICE] authenticity. Include: 1) A 3-tier classification system for flagged content (explicit/implicit/gray area) 2) Customizable sensitivity thresholds for different audience segments 3) Real-time reporting dashboard showing moderation patterns 4) Escalation protocols for borderline cases Explain how to train the AI model using [PAST MODERATION DECISIONS] as reference data while accounting for evolving community standards. Provide specific examples of how this system would handle controversial but brand-relevant topics like [CURRENT INDUSTRY DEBATE].