超精细姿态锁定海滩肖像

{
  "meta": {
    "target_aspect_ratio": "3:4",
    "mode": "strict_visual_replication",
    "version": "V3_ULTRA_POSE_LOCK",
    "fidelity_priority": "absolute"
  },
  "subject_description": {
    "demographics": "女性，古铜色皮肤，深棕色头发。",
    "hair_state": "湿润，发丝质感，松散波浪卷，贴在颈部和肩部，未做造型，可见发缝。",
    "apparel": {
      "item": "黑色系带比基尼套装。",
      "top_detail": "三角杯，胸前中心有连接罩杯的金色圆环五金件。",
      "bottom_detail": "侧系带底裤，绳端有贝壳珠装饰，低腰。",
      "accessories": "脐环（银色饰钉）。"
    }
  },
  "pose_geometry": {
    "head_neck_complex": {
      "cervical_flexion": "高度屈曲，头部显著向下倾斜（约 30 度）。",
      "rotation": "向主体右侧轻微旋转。",
      "chin_position": "下巴紧贴锁骨，挤压颈部皮肤。",
      "gaze": "视线向下看向胸部/地面，眼睑低垂或闭合。"
    },
    "upper_appendages": {
      "shoulder_girdle": "前伸（向前卷曲），斜度自然放松。",
      "humerus_position": "向后伸展（后屈），位于躯干平面之后。",
      "elbow_flexion": "弯曲，隐藏在躯干/腰部后方。",
      "forearm_wrist_hand": "遮挡在背部/臀部后方。",
      "negative_space": "上侧肋骨与内上臂之间可见三角形空隙。"
    },
    "spine_pelvis_state": {
      "thoracic_curvature": "由于肩膀前伸导致的轻微胸椎后凸（含胸）。",
      "lumbar_curvature": "自然腰椎前凸，非过度伸展。",
      "pelvic_tilt": "中性至轻微前倾。",
      "torso_orientation": "正面朝向相机，向主体右侧有轻微明显的扭转。"
    },
    "lower_appendages": {
      "femur_alignment": "垂直，大腿略微分开（可见大腿缝隙）。",
      "weight_distribution": "视觉上居中但放松，产生柔和的髋部褶皱线。"
    }
  },
  "body_compression_and_surface_details": {
    "soft_tissue_behavior": "胸部受重力和泳装张力自然挤压。腹部放松（未收腹），肚脐周围有柔和的轮廓。",
    "skin_texture": "胸部、肩膀和前额有湿润的皮肤光泽（高光反射）。肤色略有不均。腋下有自然的皮肤褶皱。",
    "facial_expression": "灿烂、真实的笑容，露出上排牙齿。脸颊上提，可见鼻唇沟。"
  },
  "environment_spatial_context": {
    "setting": "热带海滩岸边。",
    "ground_plane": "白沙，表面不平整，散落着有机碎屑（细枝、干叶），有浅浅的脚印。",
    "background_elements": {
      "left_quadrant": "巨大的木麻黄/松树树干，带有针状叶片，部分阴影。",
      "right_quadrant": "架在支柱上的木制海滩小屋，灰色的风化木材，门廊栏杆，深色 "
    }
  }