照片級真實感、解剖學鎖定的鏡像自拍提示

```json
{
  "metadata": {
    "engine": "PX-LOCK-X",
    "prompt_version": "1.0.0",
    "generation_goal": "以零漂移的方式，在姿勢、解剖結構、環境、光線和服裝上，重現逼真的鏡像自拍。",
    "determinism": {
      "pose_lock": true,
      "camera_lock": true,
      "composition_lock": true,
      "anatomy_lock": true,
      "environment_lock": true,
      "lighting_lock": true,
      "wardrobe_lock": true,
      "texture_lock": true,
      "deviation_tolerance": {
        "keypoint_px_at_4k": 6,
        "silhouette_iou_min": 0.94,
        "camera_shift_max_norm": 0.006
      }
    },
    "output_quality": {
      "resolution": "4K",
      "focus": "極度銳利",
      "noise": "極小"
    }
  },
  "subject": {
    "identity": {
      "gender": "男性",
      "age_range": "30 歲出頭",
      "ethnicity": "非洲裔加勒比人",
      "height_estimate_ft_in": "6'1\""
    },
    "face": {
      "shape": "長方形",
      "jawline": "寬闊、有力",
      "cheekbones": "中等高度",
      "eyes": {
        "color": "深棕色",
        "gaze": "直視手機",
        "openness": "放鬆、半開",
        "expression": "平靜、自信"
      },
      "nose": "筆直，鼻樑寬闊",
      "lips": {
        "shape": "中等豐滿",
        "parting": "微張"
      },
      "hair": {
        "style": "完全剃光頭",
        "scalp_finish": "乾淨的剃刀刮痕",
        "detail_lock": true
      },
      "facial_hair": {
        "type": "絡腮鬍",
        "length": "短方型",
        "density": "濃密",
        "grooming": "臉頰和頸線沿著乾淨的線條"
      },
      "accessories": "無"
    },
    "skin": {
      "tone": "深暖棕色",
      "texture": "自然，帶有沐浴後的微妙光澤",
      "body_hair": {
        "chest": "稀疏、少量",
        "abs": "極少"
      },
      "moisture": "略微濕潤"
    },
    "physique": {
      "build": "高度肌肉發達的運動員-健美運動員混合型",
      "proportions_inches": {
        "chest": 50,
        "waist": 33,
        "hips": 44
      },
      "upper_body": {
        "shoulders": "極其寬闊",
        "neck": "粗壯有力",
        "pectorals": "結實、圓潤",
        "deltoids": "深層條紋狀",
        "arms": "粗壯，血管明顯",
        "triceps": "馬蹄形輪廓"
      },
      "core": {
        "abs": "厚實的六塊腹肌，分離度深",
        "obliques": "線條清晰",
        "adonis_belt": "清晰可見"
      },
      "lower_body": {
        "quadriceps": "毛巾下厚實且輪廓分明",
        "fat_level": "非常低"
      },
      "advanced_anatomy": {
        "thoracic_depth_in": 9.5,
        "waist_depth_in": 5.2,
        "hip_depth_in": 7.5
      },
      "symmetry": "肌肉量和血管分佈具有高度雙側平衡"
    }
  },
  "pose": {
    "stance": "正面站立",
    "orientation": "正對鏡子"
  }
}
```