复古制图技术插画

{
  "subject": {
    "main_focus": "一只戴着手套的手握着黄铜制图圆规和复古钢笔",
    "background_elements": [
      "房屋建筑蓝图",
      "机械齿轮原理图",
      "剖面技术图纸"
    ],
    "setting": "陈旧泛黄的羊皮纸工作台面"
  },
  "style": {
    "aesthetic": "复古工业技术插画",
    "art_medium": "做旧纸张上的水墨与水洗淡彩",
    "texture": "粗糙颗粒感、深褐色调、带有折痕与咖啡渍的做旧纸张",
    "typography": {
      "text": "[VINTAGE TECHNICAL ILLUSTRATION]",
      "font_style": "粗衬线体、风化木版印刷风格",
      "placement": "顶部居中"
    }
  },
  "composition": {
    "perspective": "俯视微距特写",
    "lighting": {
      "type": "温暖的电影感聚光照明",
      "effects": "悬浮微尘与金属工具上的微光高光"
    },
    "color_palette": [
      "深褐色",
      "焦橙色",
      "炭灰色",
      "古铜金色"
    ],
    "framing": "手从右下角斜向伸入，形成视觉焦点"
  },
  "technical_details": {
    "line_work": "高精度针管笔线条，排线与交叉排线阴影",
    "realism": "皮手套纹理与金属光泽的高精细节"
  }
}