UI Reasoning: Digital Products/Downloads. Recommended Pattern: Feature-Rich + Conversion. Style Priority: Vibrant & Block-based + Motion-Driven. Color Mood: Product colors + Brand + Success green. Typography Mood: Modern + Clear typography. Key Effects: Product preview + Instant delivery animations. Decision Rules: {"must_have": "product-preview", "must_have": "instant-delivery"}. Anti-Patterns: No preview + Slow delivery. Severity: HIGH.