使用案例：写实自然
素材类型：人像图片，预期宽高比 9:16
主要请求：日系负片胶片美学，夏季的小阳台，柔和的自然光，轻微过曝的高光，低对比度，淡化的色彩，细微的颗粒。一位虚构的 20 岁出头的成年韩国女偶像，精致且具有安静的磁性，通过放松的呼吸和重心移动展现微妙的感性。
场景/背景：狭窄的汽车旅馆阳台，淡色窗帘在门口飘动，远处低矮的城市屋顶，金属小桌上的塑料袋和房间钥匙。
主体：一只手靠在身后倚着阳台栏杆，躯干倾向开阔的天空，头发遮住一只眼睛。
服装/道具：桃色大号棉衬衫，衣领处松散地解开扣子，白色高腰短裤，举在唇边的一瓶冰矿泉水。
构图/取景：高垂直裁剪，顶部稍显过近，原始胶片抓拍感。
光影/氛围：清晨薄雾，亲密但不露骨，安静。
约束：仅限虚构的成年主体；无真实名人肖像；无可见品牌标记，无文字，无水印。
Use case: photorealistic-natural
Asset type: portrait image, intended aspect ratio 9:16
Primary request: Japanese negative film aesthetic, small balcony in summer, soft natural light, slight overexposure highlights, low contrast, faded colors, subtle grain. A fictional adult Korean female idol in her early 20s, refined and quietly magnetic, subtle sensuality through relaxed breathing and weight shift.
Scene/backdrop: narrow motel balcony with a pale curtain drifting through the door, distant low city roofs, plastic bag and room key on a small metal table.
Subject: leaning against the balcony rail with one hand behind her, torso angled toward open sky, hair moving over one eye.
Wardrobe/props: peach oversized cotton shirt loosely unbuttoned at the collar, white high-waisted shorts, cold glass bottle of mineral water lifted near her lips.
Composition/framing: tall vertical crop, slightly too close at the top, raw film snapshot feeling.
Lighting/mood: morning haze, intimate but non-explicit, quiet.
Constraints: fictional adult subject only; no real celebrity likeness; no visible brand marks, no text, no watermark.
