Split Screen Mechanical Keyboard Poster

{
  "type": "premium product advertisement poster",
  "subject": {
    "product": "[X75] mechanical keyboard",
    "category": "75% compact wireless mechanical keyboard",
    "color": "deep navy blue with dark teal accents",
    "material": "matte plastic case with rounded keycaps",
    "branding": "small badge in the top-right corner of the keyboard",
    "layout badge": "cream square badge with a black X symbol attached near the keyboard's top-right edge"
  },
  "scene": {
    "setting": "warm moody desktop setup",
    "surface": "rich brown leather desk mat on a light wood desk",
    "lighting": "cinematic warm directional light from upper right, soft reflections, luxury tech advertisement mood",
    "background": "dark blurred office or desk environment with a coffee mug in the upper-right corner and faint desk objects"
  },
  "composition": {
    "format": "split-screen before-and-after promotional comparison",
    "panels": [
      {
        "position": "left half",
        "style": "plain casual snapshot",
        "description": "top-down angled photo of the keyboard centered on a large brown desk mat, bright ambient room light, visible light wood desk edge at top, part of a monitor stand or silver device at the top center, realistic unstyled product photo"
      },
      {
        "position": "right half",
        "style": "upgraded premium ad design",
        "description": "the same keyboard presented dramatically on the brown leather desk mat with darker exposure, richer contrast, warm highlights, shallow depth of field, and polished commercial retouching"
      }
    ]
  },
  "text elements": {
    "headline": "[X75]",
    "subheadline": "MECHANICAL KEYBOARD",
    "tagline": "[简约而不简单，高效每一天。]",
    "feature line count": 4,
    "feature line items": [
      "75% 紧凑布局",
      "机械轴体",
      "多系统兼容",
      "长效续航"
    ]
  },
  "bottom feature cards": {
    "count": 4,
    "cards": [
      {
        "title": "75% 紧凑布局",
        "description": "保留高效区 节省桌面空间",
        "visual": "small angled keyboard corner close-up"
      },
      {
        "title": "机械轴体",
        "description": "段落感清晰 敲击反馈出色",
        "visual": "close-up of mechanical switches with translucent housings"
      },
      {
        "title": "多系统兼容",
        "description": "支持 Windows / macOS / iOS / Android",
        "visual": "4 platform icons: Windows, Apple, iOS, Android"
      },
      {
        "title": "长效续航",
        "description": "低功耗设计 持久陪伴每一刻",
        "visual": "battery icon labeled [3000 mAh]"
      }
    ]
  },
  "style": {
    "design language": "high-end Chinese e-commerce hero banner",
    "color palette": "dark navy, charcoal, copper brown, warm amber highlights, cream typography",
    "typography": "bold modern sans-serif for product name, smaller uppercase English subtitle, clean Chinese body text",
    "finish": "sleek commercial retouching, subtle vignetting, glossy highlights, premium atmosphere"
  }
}