Using the uploaded product photo, generate a high-resolution mockup with these exact specifications: [COMPOSITION]: The product must be the ONLY object in the frame. Maintain original angle and focal length. [LIGHTING]: Apply aggressive, directional 'Hard-Flash' lighting. High-contrast reflections on the metallic can surface. [BACKGROUND]: A solid, dark slate gray matte background (#2F4F4F). [SHADOW]: Sharp, dense contact shadow. [PRODUCT INTEGRITY]: STRICTLY PRESERVE original surface. DO NOT add any new text, logos, or branding.