High-definition commercial product photography, an exquisite high-end transparent glass smartphone, the body made of crystal clear glass material, filled inside with rich hot espresso coffee. The surface of the coffee is covered with a thick and extremely fine golden crema foam, with a few wisps of natural steam slowly rising. Then, the liquid coffee splashes in a slow-motion dynamic shot of high-speed photography, with elegant liquid lines encircling and wrapping around the phone's silhouette. As the splash gradually dissipates, the transparent glass phone seamlessly and realistically transforms into a luxury smartphone with a high-grade brown leather back cover, preserving full body proportions, lens modules, and details, presenting an extremely realistic material transition effect. Composition and Lens: Macro commercial product photography, 90mm macro lens, f/2.8 aperture, focusing on the glass surface of the phone, leather texture, and coffee fluid details, capturing a high-tension high-speed dynamic moment, ultra-high resolution. Lighting and Atmosphere: Using professional studio lighting, soft side-backlighting outlines the glass and leather body silhouettes, highlights naturally map onto the transparent glass surface, showing realistic reflection and refraction effects. The background is a pure shadowless white, highlighting the product subject and material contrast, creating a high-end, minimalist, luxury commercial advertising visual style. Materials and Details: Transparent glass material is crystal clear and pure, coffee liquid has realistic physical viscosity, fluidity, and highlight reflections. The resulting brown leather body shows fine natural leather grains, exquisite stitching, and a high-end texture. Liquid dynamics are precisely expressed, overall achieving cinematic hyper-realistic commercial product photography quality. Constraints: No text, trademarks, logos, or watermarks should appear in the image. Ensure the phone proportion is accurate, the body is complete, without distortion or deformation. The lens module remains natural and realistic. Avoid excessive neon colors, plastic feel, or cartoon style, maintaining a natural, high-end, and realistic color balance and commercial advertising texture.