浪漫海滩情侣特写，同时保护身份

{
  "generation_request": {
    "meta_data": {
      "task_type": "cinematic_romantic_couple_beach_closeup",
      "language": "en",
      "priority": "highest",
      "version": "v1.1_BEACH_FLOWER_TUCK_STRICT_IDENTITY_HAIRLOCK"
    },
    "input": {
      "mode": "image_to_image",
      "reference_image_usage": "very_high",
      "preserve_identity": true,
      "preserve_facial_features": true,
      "notes": "Match the uploaded reference faces with maximum likeness. Keep facial structure, eyes, nose, lips, smile, skin tone, hairline, and ALL hair attributes texture exactly consistent with the reference. Do not change age. No stylization. No identity drift."
    },
    "output": {
      "aspect_ratio": "4:5",
      "resolution": "ultra_high",
      "num_images": 4,
      "sharpness": "high",
      "grain": "subtle_analog"
    },
    "scene": {
      "concept": "romantic candid moment at a rocky beach",
      "environment": "rock formations in the background, soft overcast daylight, calm seaside atmosphere",
      "composition": "tight medium close-up, couple fills frame, shallow depth of field, background softly blurred",
      "action": "man gently tucks a bright magenta flower behind the woman's ear while she smiles warmly and looks up at him"
    },
    "subject": {
      "couple": {
        "woman": {
          "identity": "Use the uploaded reference woman's face as the primary identity anchor with maximum likeness.",
          "expression": "genuine joyful smile, eyes slightly squinting with happiness",
          "hair": "HAIR MUST MATCH REFERENCE ,
          "wardrobe": {
            "dress": "white strappy summer dress, fitted bodice, minimal texture, elegant and clean"
          },
          "details": {
            "nails": "red manicure",
            "jewelry": "delicate minimal gold jewelry (optional)"
          }
        },
        "man": {
          "identity": "Use the uploaded reference man's face as the primary identity anchor with maximum likeness.",
          "expression": "soft affectionate focus on the woman",
          "hair": "HAIR MUST MATCH REFERENCE ,
          "wardrobe": {
            "shirt": "white long-sleeve button-up shirt, lightweight fabric, casual beach styling"
          },
          "accessories": "subtle gold-toned wristwatch"
        }
      }
    },
    "lighting": {
      "style": "natural soft daylight",
      "direction": "diffused top/side light",
      "contrast": "soft",
      "skin_rendering": "realistic pores and texture, no plastic look"
    },
    "camera": {
      "lens": "50mm",
      "aperture": "f2.0",
      "depth_of_field": "shallow",
      "focus": "eyes and smiles in sharp focus"
    },
    "color_grading": {
      "look": "warm cinematic film tones",
      "palette": [
        "warm sand beige",
        "muted olive rock tones",
        "soft cream whites",
        "magenta flower accent"
      ],
      "highlights": "warm",
      "shadows": "slig