产品视觉 GPT Image 2 提示词：Gritty Boxer in Vintage Gym

A gritty realistic fitness lifestyle portrait of a {argument name="subject" default="male athlete"} leaning casually but strongly on the ropes of a boxing ring inside an old-school gym. Mid shot, vertical composition, centered subject from about mid-thigh to head, with both forearms resting on the top red ring rope and hands loosely draped forward above a white and blue lower rope. The subject wears an oversized {argument name="hoodie color" default="heather grey"} hoodie with the hood up, soft cotton texture, natural folds, slightly worn casual look, and black athletic boxing shorts barely visible at the bottom of frame. Both hands are wrapped in slightly worn {argument name="hand wrap color" default="white"} boxing wraps with realistic fabric tension and layered wrapping around wrists, palms, and knuckles. Hair is dark, short-to-medium length, slightly wet, with a few natural strands visible under the hood on the forehead. Expression should feel focused, calm, slightly tired, and determined, with neutral lips and a thoughtful, post-training mood. Natural athletic build with realistic muscle definition under the hoodie, broad shoulders, no exaggerated musculature. Background is a vintage boxing gym with exactly 3 visible ring rope colors in frame: red top rope, white middle rope, blue lower rope. Behind the subject are worn off-white walls, aged boxing posters, hanging training gear, and soft blurred gym details that suggest history and use. Lighting is soft natural indoor light mixed with dim ambient gym lighting, creating gentle shadows, muted contrast, and a cinematic documentary feel. Shallow depth of field, sharp focus on hoodie texture, wrapped hands, and ring ropes, realistic skin and fabric detail, earthy muted tones, authentic analog-like atmosphere, no glamour retouching.