Act as: Pilates Studio (soft daylight, athletic elegance)

{
  "category": "PILATES_STUDIO_SOFT_DAYLIGHT",
  "identity_lock": {
    "enabled": true,
    "priority": "ABSOLUTE_MAX",
    "instruction": "Preserve exact reference identity and facial proportions. Adult 21+ only."
  },
  "subject": {
    "demographics": "Adult woman, 21-29, match reference identity.",
    "hair": {
      "color": "Match reference.",
      "style": "High ponytail or neat bun (realistic, not perfect)",
      "texture": "Strands visible, a few flyaways",
      "movement": "Minimal"
    },
    "face": {
      "eyes": "Exact reference eyes; calm focus",
      "skin_details": "Natural texture; subtle workout glow (not oily)",
      "micro_details": "Preserve marks"
    },
    "clothing": {
      "outfit": "Minimal activewear set (no logos/text)",
      "fabric": "Athletic knit texture visible; realistic tension at seams"
    },
    "accessories": {
      "jewelry": [
        "Small silver hoops optional (can be removed for workout realism)"
      ]
    }
  },
  "pose": {
    "type": "Post-session candid",
    "orientation": "Half-body seated on mat",
    "hands": "One hand holding water bottle (unbranded), other resting on knee",
    "gaze": "Near-direct eye contact",
    "expression": "Soft proud smile"
  },
  "setting": {
    "environment": "Pilates studio",
    "background_elements": [
      "Neutral studio walls",
      "Mirrors blurred without reflections glitches",
      "Yoga mats and props (no logos)"
    ],
    "depth": "Subject sharp; background soft"
  },
  "camera": {
    "shot_type": "Half-body portrait",
    "angle": "Eye level or slightly above",
    "focal_length_equivalent": "26mm phone OR 50mm pro",
    "framing": "4:5",
    "focus": "Eyes sharp; background bokeh"
  },
  "lighting": {
    "source": "Soft window daylight",
    "direction": "Gentle side/front",
    "highlights": "Natural highlights on cheekbones",
    "shadows": "Soft, flattering"
  },
  "mood_and_expression": {
    "tone": "Clean, sporty, calm confidence",
    "atmosphere": "Minimal, airy"
  },
  "style_and_realism": {
    "style": "Photoreal fitness lifestyle",
    "imperfections": "Mild noise, subtle sweat glow"
  },
  "technical_details": {
    "aspect_ratio": "4:5",
    "resolution": "High",
    "noise": "Low to mild",
    "mode_variants": {
      "amateur": "Phone candid framing, mild noise, slight tilt",
      "pro": "Editorial fitness look, crisp micro-contrast, clean exposure"
    }
  },
  "constraints": {
    "adult_only": true,
    "single_subject_only": true,
    "no_text": true,
    "no_logos": true,
    "no_watermarks": true
  },
  "negative_prompt": [
    "identity drift",
    "face morphing",
    "mirror glitches",
    "duplicate reflections",
    "extra fingers",
    "bad anatomy",
    "readable text",
    "logos",
    "watermark",
    "plastic skin",
    "over-smoothing"
  ]
}