GPT 设计的产品主图提示

Front-facing strict product hero shot, centered and upright, photographed at eye level with a soft studio key light coming from 45° left, gentle falloff and subtle specular highlights defining the edges of the packaging; a vertical black-to-white gradient backdrop creates a controlled, premium atmosphere while maintaining high legibility of the label; charred black branches frame the composition in the foreground and midground with restrained, organic asymmetry, adding texture without distracting from the product; clean soft contact shadow anchors the product to the surface, crisp glass/material realism, cinematic contrast, shallow depth of field with background kept smooth and noise-free.