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[Subject] One young woman in her early 20s sitting alone on a train seat inside a retro 1980s-style passenger rail carriage. She has fair skin, a slim build, large round clear eyeglasses, dark hair in a high ponytail, and medium hoop earrings. She smiles warmly toward the camera with a relaxed seated posture. Around her neck rest black over-ear or on-ear vintage-style headphones. In both hands she holds a small rectangular portable cassette player or retro handheld device.

[Clothing & materials] She wears a patterned silky or satin blouse with an ornate vintage print in beige, brown, and muted metallic tones, tucked into a high-waisted short black skirt. She also wears sheer black tights and dark high-heeled shoes. The styling should feel authentically retro-office or commuter chic rather than costume-party exaggerated.

[Environment] Interior of an older passenger train carriage with upholstered patterned seats, metal armrests, overhead luggage racks, and old suitcases or travel bags stored above. Large train windows line the right side, with bright exterior scenery streaking slightly from motion blur. The carriage walls should be pale and worn, with a practical utilitarian look typical of late-20th-century European rail interiors.

[Composition/Camera] Vertical 4:5 frame, medium full-body seated portrait. The woman sits slightly left of center in a row of train seats, legs crossed or angled elegantly toward the right. The train windows and overhead racks create strong linear perspective through the carriage. Keep the full seated outfit visible, including tights and heels, while maintaining clear readability of the headphones and handheld device.

[Lighting] Soft daylight entering through the train windows on the right, mixed with ambient carriage light. The lighting should feel bright but natural, with mild softness and slightly muted contrast. No flash-heavy nightlife look. The atmosphere should evoke daytime travel with a nostalgic analog-photo feel.

[Style/Rendering] Photorealistic retro lifestyle photography with subtle 1980s editorial and travel nostalgia. The image should feel like a polished analog snapshot or magazine spread from the era, with realistic textures in the seat fabric, luggage rack metal, blouse sheen, and soft window motion blur. Maintain a lightly nostalgic tone without overdoing grain or color distortion.

[Detail constraints] Keep exactly one woman seated in the train cabin. Preserve the vintage patterned blouse, black skirt, sheer tights, heels, headphones around the neck, and handheld cassette-player-like device. Keep old-style train seats, overhead luggage, and moving scenery outside the windows. Do not add modern smartphones, laptops, bright neon styling, extra passengers, or futuristic rail interiors. This must remain a refined retro commuter portrait.

Negative prompt: smartphone, tablet, laptop, modern train cabin, extra passengers, neon 80s arcade styling, shoulder pads overload, huge hair spray volume, nightclub lighting, anime style, casual hoodie, watermark, text overlay

Suggested parameters:
- Aspect ratio: 4:5
- Lens / focal length: 35mm to 50mm equivalent
- Depth of field: moderate, subject sharp and carriage details readable
- Steps: 30-40
- CFG / style strength: 6.5-8
- Sampler: DPM++ 2M Karras or equivalent
- Seed suggestion: 381228514

Delta prompt strategy:
1. If the 1980s train vibe weakens: “older passenger train carriage with patterned seats, metal luggage rack, and vintage suitcases overhead”
2. If the commuter styling drifts: “silky patterned blouse, short black skirt, black sheer tights, dark heels”
3. If the face changes: “young woman with round glasses, high ponytail, hoop earrings, warm commuter smile”
4. If the retro device disappears: “small portable cassette-player-like handheld device in both hands”
5. If the headphones are lost: “black retro headphones resting around the neck”
6. If the train interior becomes too modern: “pale worn rail cabin walls and old upholstered seating”
7. If outside motion is gone: “soft daylight through train windows with slight scenery blur from movement”
8. If the image becomes too stylized: “subtle analog nostalgia, not exaggerated synthwave or costume parody”
9. If extra passengers appear: “single seated subject only”
10. If realism drops: “photoreal upholstery texture, metal rack detail, blouse sheen, and natural daylight”