JSON 风格的 Nano Banana Pro 提示词，用于生成逼真面孔

{
"intent": "Generate a hyper-idealized, Douyin-style night portrait of the same girl attached in reference image using direct flash photography, creating a sharp, high-contrast glow.",
"frame": {
"aspect_ratio": "16:9",
"composition": "Extreme close-up selfie framing focused tightly on eyes and lips, forehead slightly cropped, centered gaze.",
"style_mode": "Flash photography, digital influencer aesthetic, soft-focus realism"
},
"subject": {
"identity": "the same girl attached in reference image with soft youthful features and understated elegance.",
"skin": " with smooth luminous finish reflecting the flash, creating a glassy glow with minimal texture.",
"hair": " loose, naturally wavy catching specular highlights from the flash.",
"wardrobe": "Minimal visibility of a simple, understated top suited for a city night."
},
"environment": {
"location": "Nighttime {argument name="city type" default="indian city"}.",
"weather": "Clear, calm night sky.",
"background": "Dark urban backdrop with blurred bokeh lights from buildings."
},
"lighting": {
"type": "Direct frontal phone flash or high-intensity screen light",
"quality": "Hard, flat lighting eliminating deep shadows and creating a smooth two-dimensional glow",
"contrast": "Strong separation between the illuminated face and the dark city background",
"catchlight": "Small flash reflection in the center of pupils"
},
"camera": {
"sensor_format": "Smartphone main camera simulation",
"lens": "24mm wide-angle lens exaggerating eye size and softening facial proportions",
"aperture_depth_of_field": "f/1.8–f/2.2, sharp on eyes and lips, instant blur on background and edges of hair",
"focus": "Critical focus on iris texture and lashes"
},
"negative": {
"content": "No wet hair, no snow, no rain, no masculine features, no visible pores, no contour-heavy makeup, no sunglasses, no hands in frame.",
"style": "No dramatic shadows, no vintage tones, no painterly effects, no warm film look."
}
}