低调奢华酒吧人像特写，带面部锁定功能

{
  "generation_request": {
    "meta_data": {
      "tool": "NanoBanana Pro",
      "task_type": "photoreal_luxury_bar_night_editorial_portrait",
      "version": "v1.0_DARK_BAR_RED_CUTOUT_DRESS_LOWKEY_35MM_FACELOCK_EN",
      "priority": "highest",
      "language": "en"
    },

    "references": {
      "reference_image_style": {
        "source": "UPLOAD_REFERENCE_IMAGE (REQUIRED)",
        "purpose": "POSE_COMPOSITION_LIGHTING_ANCHOR",
        "strict_lock": true,
        "preserve_pose": true,
        "preserve_composition": true,
        "preserve_vibe": true,
        "preserve_background": true
      },
      "reference_image_face": {
        "source": "UPLOAD_REFERENCE_IMAGE (OPTIONAL)",
        "purpose": "FACE_IDENTITY_LOCK",
        "strict_lock": true,
        "face_similarity_priority": "MAX",
        "no_identity_blending": true,
        "no_beautify": true,
        "no_age_shift": true,
        "preserve_skin_texture": true,
        "preserve_facial_proportions": true,
        "preserve_moles_freckles_scars": true,
        "preserve_eye_shape": true,
        "preserve_nose_shape": true,
        "preserve_lip_shape": true,
        "preserve_jawline": true
      }
    },

    "global_constraints": {
      "rating": "PG-13",
      "no_nudity": true,
      "no_explicit_sexual_content": true,
      "no_logos": true,
      "no_watermark": true,
      "no_readable_text": true
    },

    "output_settings": {
      "aspect_ratio": "4:5",
      "orientation": "portrait",
      "resolution_target": "ultra_high_res",
      "render_style": "cinematic_photoreal_film_still",
      "sharpness": "crisp_but_natural",
      "film_grain": "subtle_35mm",
      "color_grade": "low_key_warm_amber_highlights_deep_blacks",
      "dynamic_range": "natural_not_hdr",
      "skin_rendering": "real_texture_no_retouch"
    },

    "creative_prompt": {
      "scene_summary": "Create a photoreal, low-key luxury bar night portrait inspired by the provided reference image. Location: dark upscale bar with black ceiling, small recessed spotlights, deep shadows, and a glossy black marble bar counter with subtle white veining. Background should fall into soft darkness with a hint of bar seating and table settings, but no readable details.\n\nSubject: one adult woman (same identity if face reference is provided) standing near the marble bar. Pose matches reference: torso angled slightly, one hand lifted behind her head touching her hair, the other arm relaxed by her side. Expression confident and cinematic, looking slightly off-camera.\n\nWardrobe: a deep {argument name="dress color" default="wine-red"} bodycon evening dress with tasteful cutouts at the waist/torso (two cutout windows), connected with small gold ring hardware at the center. Dress is fitted and elegant, PG-13, no nudity.\n\nBeauty: glossy neutral lips, soft glam makeup with warm highlights on cheekbones, luminous but natural skin texture. Long dark hair styled in voluminous waves.\n\nLighting: low-