应用场景：写实自然
资产类型：肖像图，目标尺寸 1200x1600 纵向
主要请求：创作一张日系负片美学的韩国成年女偶像肖像，背景为排练后空旷的室外体育场台阶。
场景/背景：混凝土体育场台阶，褪色的座位排，开阔的夏日天空，一个小塑料袋在风中飘动。
主体：20多岁的韩国成年女偶像，神情平静而疏离，略显疲惫，头发被风吹过脸庞。
服装：大号白色队服风格衬衫（无可见标志），高腰海军蓝短裤，白袜和运动鞋。
姿势/动作：坐在混凝土台阶边缘，一只手在身后支撑，一膝弯曲，另一条腿向下伸展，躯干略微转向镜头。
道具：一只手腕上缠着条纹运动毛巾，脸颊旁贴着带冷凝水珠的冷饮玻璃瓶。
风格/媒介：写实纪实编辑风格照片，日系负片美学。
构图/取景：纵向，台阶形成重复线条，略微不完美的剪裁和开阔的天空。
光影/氛围：午后自然阳光，高光略微过曝，低对比度，怀旧且具有沉思感的氛围。
色调：白色、海军蓝、混凝土灰、褪色的座椅蓝。
约束：仅限成年主体，高雅非显露时尚肖像，无标志，无文字，无水印。
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.
