Using the uploaded product photo, generate a high-resolution mockup with these exact specifications: [COMPOSITION]: Product in front of a colorful, abstract graffiti wall. [LIGHTING]: Harsh direct flash, creating high-contrast colors and deep shadows. [BACKGROUND]: A graffiti-style abstract background. [SHADOW]: Aggressive black shadows. [PRODUCT INTEGRITY]: STRICTLY PRESERVE original surface. [MOOD]: Streetwear, bold, Gen-Z.