style:
  id: paper-toy
  name: 纸艺模型
  name_en: Paper Toy
  category: [三维, 产品, 建筑]
  visual_dna:
    line: {organic: 40, precision: 60}
    color: {saturation: 62, warmth: 38}
    lighting: {softness: 82, contrast: 18}
    texture: {material: 86, clean: 14}
    detail: {density: 74}
    depth: {cinematic: 52}
    mood: {energy: 84}
  composition:
    depth: cinematic
    framing: 微缩立体布景，略带俯视
  subjects: [产品, 建筑]
  models: [GPT Image, Flux]
  recipe:
    identity: 手工纸模型搭建的微缩世界
    line: 物理折边与裁切边
    color: 温暖的低饱和色块
    lighting: 柔和影棚光，长而软的投影
    material: 彩卡纸、牛皮纸
    texture: 纤维质感与折痕
    character: 稚拙、几何化、亲和
    atmosphere:  playful, tactile、可以伸手摸
  negative: [photorealistic, metal, hdri reflection]
  reference_notes: 立体书 / 纸艺定格动画
  constraints:
    anchor: 主视觉即唯一锚点：纸张厚度、色板与投影方向以它为准；新主体必须遵守同一套物理限制。
    bans:                      # 按优先级，前置到提示词
      - no forms beyond the thickness and stiffness of paper
      - no metal, no glass, no mirror reflections
      - no short hard-edged shadows
    fail_if:
      - no crease lines or cut paper edges anywhere
      - shadow shorter than one third of the object height
      - more than six color blocks in the frame
    pass: 应像一件真的可以拿起来、并且会折坏的手工。