负片人像：午后台阶

Use case: photorealistic-natural Asset type: portrait image, target size 1200x1600 vertical Primary request: Create a Japanese negative film aesthetic portrait of an adult Korean female idol on empty outdoor stadium stairs after rehearsal. Scene/backdrop: concrete stadium steps, faded seat rows, open summer sky, a small plastic bag moving in the wind. Subject: adult Korean female idol in her mid-20s, calm and distant, lightly tired, hair blown across her face. Wardrobe: oversized white team-style shirt with no visible logo, high-waisted navy shorts, white socks and trainers. Pose/action: sitting on the concrete stair edge, one hand supporting behind, one knee bent, the other leg extended down a step, torso subtly turned toward camera. Prop: striped sports towel around one wrist, cold glass bottle drink with condensation held near her cheek. Style/medium: photorealistic candid editorial photo, Japanese negative film aesthetic. Composition/framing: vertical, steps create repeating lines, slightly imperfect crop and open sky. Lighting/mood: late afternoon natural sunlight, slightly overexposed highlights, low contrast, nostalgic reflective mood. Color palette: white, navy, concrete gray, faded seat blue. Constraints: adult subject only, tasteful non-explicit fashion portrait, no logos, no text, no watermark.