“黑暗教父”结构化肖像

[GPT-image2 Structural Prompt: {argument name="theme" default="The Dark Godfather"}]

### 1. Identity Transformation
- Base Identity: Take the facial structure from [Reference Image].
- Modifications: Age the face by {argument name="age increase" default="30 years"}, adding deep-seated wisdom lines and weathered, leathery skin texture. Maintain the stoic, unshakable gaze of a high-status leader.

### 2. Lighting Architecture (Key)
- Light Source: A single, harsh Vertical Top-Lighting from directly overhead.
- Shadow Mapping: This lighting must create cavernous shadows in the eye sockets, making the eyes almost invisible in mystery. It should cast a sharp, long shadow under the nose and chin, highlighting the skull's bone structure for a "silent authority" look.
- Style: Extreme Chiaroscuro. 70% of the face must be submerged in absolute velvet blackness.

### 3. Scene & Composition
- Subject: The man is seated in a classic high-backed black leather chair. He is slowly and rhythmically stroking a {argument name="pet" default="dark, sleek cat"} on his lap.
- Foreground: Focus on the contrast between the weathered, powerful hand and the soft fur of the cat.
- Background: A pitch-black, minimalist study. Only a faint, out-of-focus silhouette of a mahogany desk is visible.
- Camera: 85mm lens, f/1.8, medium shot, slight low-angle perspective.

### 4. Color & Texture
- Palette: Desaturated color grading. Deep tobacco browns, obsidian blacks, and sharp amber highlights (#B08D6A / #1A120B).
- Texture: 35mm film grain, Subsurface Scattering (SSS) for realistic skin highlights, PBR texture mapping (no plastic feel).

### 5. Negative Constraints
- NO smiling, NO looking at the camera directly, NO youthful skin, NO flat lighting, NO bright backgrounds, NO vibrant colors, NO digital smoothness.