超详细的姿势锁定海滩肖像

{
  "meta": {
    "target_aspect_ratio": "3:4",
    "mode": "strict_visual_replication",
    "version": "V3_ULTRA_POSE_LOCK",
    "fidelity_priority": "absolute"
  },
  "subject_description": {
    "demographics": "Female, tan skin complexion, dark brunette hair.",
    "hair_state": "Wet, stringy texture, loose waves, clinging to neck and shoulders, unstyled, parting visible.",
    "apparel": {
      "item": "Black string bikini set.",
      "top_detail": "Triangle cups, gold ring hardware connecting cups in center chest.",
      "bottom_detail": "Side-tie bottoms, shell bead ornaments on string ends, low rise.",
      "accessories": "Navel piercing (silver stud)."
    }
  },
  "pose_geometry": {
    "head_neck_complex": {
      "cervical_flexion": "High, head tilted significantly downward (~30 degrees).",
      "rotation": "Slight rotation to subject's right.",
      "chin_position": "Tucked close to clavicle, compressing neck skin.",
      "gaze": "Directed downwards towards chest/ground, eyelids lowered/closed."
    },
    "upper_appendages": {
      "shoulder_girdle": "Protracted (rolled forward), relaxed slope.",
      "humerus_position": "Extended backward (retro-flexed) behind the plane of the torso.",
      "elbow_flexion": "Bent, hidden behind torso/waist.",
      "forearm_wrist_hand": "Occluded behind back/buttocks.",
      "negative_space": "Triangular gaps visible between upper lateral ribs and inner upper arms."
    },
    "spine_pelvis_state": {
      "thoracic_curvature": "Slight kyphotic rounding (slouch) due to shoulder protraction.",
      "lumbar_curvature": "Natural lordosis, not hyperextended.",
      "pelvic_tilt": "Neutral to slight anterior tilt.",
      "torso_orientation": "Frontal to camera, slight distinct twist to subject's right."
    },
    "lower_appendages": {
      "femur_alignment": "Vertical, thighs slightly separated (thigh gap visible).",
      "weight_distribution": "Visually centered but relaxed, creating soft hip crease lines."
    }
  },
  "body_compression_and_surface_details": {
    "soft_tissue_behavior": "Breasts compressed naturally by gravity and swimwear tension. Stomach relaxed (not sucked in), soft definition around navel.",
    "skin_texture": "Wet skin sheen (specular highlights) on chest, shoulders, and forehead. Slight unevenness in tan. Natural skin folding at armpits.",
    "facial_expression": "Broad, genuine smile showing upper teeth. Cheeks lifted, nasolabial folds visible."
  },
  "environment_spatial_context": {
    "setting": "Tropical beach shoreline.",
    "ground_plane": "White sand, uneven surface, scattered organic debris (twigs, dried leaves), shallow footprints.",
    "background_elements": {
      "left_quadrant": "Large Casuarina/Pine tree trunk with needle-like foliage, partial shade.",
      "right_quadrant": "Wooden beach cabin on stilts, grey weathered wood, porch railing, dark "
    }
  }