{
  "mode": "built-in image_gen",
  "status": "static design illustrations; not reviewed animation",
  "reference": "docs/小程序/设计稿/2026-10-16-学习体验方案/assets/sprout-companion-v2.png",
  "prompts": {
    "fox": "Use case: stylized-concept. Asset type: original companion illustration for a Chinese primary-school English vocabulary app. Input image is a STYLE REFERENCE ONLY, the original sprout companion, not a subject to copy. Create one original adorable small orange fox companion, complete full body including both ears, both little arms, both feet and fluffy tail. Soft premium 3D clay-toy material with gentle warm studio lighting, cream belly and muzzle, warm apricot orange fur, tiny dark forest green expressive eyes, friendly subtle smile, holding a small warm yellow vocabulary notebook. Broad rounded shapes, clean silhouette, readable at small mobile UI sizes. Match the reference softness and proportions, but fox anatomy must remain clearly recognisable. Centered entire body on genuine transparent background with 8% clear padding on every edge. No text, no letters, no logos, no blue, no owl, no resemblance to Duolingo characters. Not a sheet, exactly one complete character. Save a transparent PNG.",
    "penguin": "Use case: stylized-concept. Asset type: original companion illustration for a Chinese primary-school English vocabulary app. Input image is a STYLE REFERENCE ONLY, original sprout companion. Create one original adorable small penguin companion with a round pear-shaped full body, both flippers, both feet, small amber beak. Muted dark forest green-charcoal back, cream white belly and face, warm apricot yellow feet, tiny expressive dark eyes, friendly subtle smile. Soft premium 3D clay-toy material, gentle warm studio lighting, holding a tiny warm yellow vocabulary notebook. Clean calm composition, tactile softly textured material and clear charming silhouette, readable at small UI sizes. Entire complete body centered, generous 8% padding on every edge, genuine transparent background, no shadow backdrop. No text, no letters, no logos, no blue, no owl or Duolingo resemblance. Exactly one character, not a sheet. Transparent PNG.",
    "sprout-middle": "Use case: stylized-concept. Asset type: second growth-stage character illustration for an original English learning companion. Input image is the first-stage original character, identity and material reference. Create its distinctly grown second form: a slightly taller upright cream pear-bean body, same dark forest-green eyes, same gentle smile and rosy cheeks, small arms and complete feet, holding same warm yellow vocabulary notebook. Its original two-leaf head sprout has now become a gracefully taller green stem with two large top leaves plus two small new leaves underneath. Preserve the recognisable face, cream body, clay-toy softness, premium gentle warm studio lighting and botanical silhouette. Friendly to primary school children, not infantile. Entire full-body subject, no cropping, centered with 8% transparent padding all edges, genuine transparent PNG. No text, no labels, no background, no logos, no blue, not an owl, not Duolingo.",
    "sprout-bloom": "Use case: stylized-concept. Asset type: third and fully-grown stage of an original English-learning botanical companion. Input image is its first-stage identity and material reference. Create a distinctly mature form, still a cute cream pear-bean character, slightly taller sturdy complete body, same dark forest-green eyes and subtle smile, rosy cheeks, complete arms and feet, holding the same yellow vocabulary notebook. From its head grows a short graceful green stem with several lush rounded green leaves and a single delicate small warm apricot-yellow five-petal flower. The flower and leaves must feel like a living plant growing from its head, not a hat. Keep its face and friendly style recognisable, premium soft clay-toy material, gentle studio light, clean broad silhouette. Complete full-body centered subject with generous 8% padding all edges on genuine transparent PNG background. No text, no labels, no scenery, no logos, no blue, not owl, not Duolingo.",
    "butterfly": "Use case: stylized-concept. Asset type: original little butterfly visitor for a primary school English vocabulary learning app. Input image is a STYLE REFERENCE for premium soft clay-toy texture and gentle warmth, not a subject to reproduce. Create one friendly little butterfly with symmetric rounded upper and lower wings in warm apricot yellow with subtle fresh-leaf green spots, a small forest-green bean-shaped body, delicate antennae, tiny dark eyes and a subtle smile. Soft toy/clay 3D, clean silhouette, warm studio lighting, suitable for a garden companion reward. Full creature entirely visible, isolated centered with 10% clear padding on genuine transparent background. No text, no book, no scenery, no blue, no brand logos, not a copy of any existing mascot."
  }
}