Premium Mechanical Keyboard Ad Poster

{"type":"premium product advertisement poster","subject":{"product":"{argument name=\"product name\" default=\"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":"{argument name=\"headline text\" default=\"X75\"}","subheadline":"MECHANICAL KEYBOARD","tagline":"{argument name=\"tagline\" default=\"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 {argument name=\"battery capacity\" default=\"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"}}