Ergonomic Chair Office Sale

Create a 4:5 vertical ecommerce promotional creative titled "Ergonomic Chair Office Sale". Product and scene: 人体工学椅放在现代书房，腰托和扶手被卖点卡标注，灰白背景. The image must include visible Simplified Chinese promotional copy. Main headline: "久坐不累". Promo badge: "到手好价". Three selling-point labels: "腰背支撑", "高度可调", "透气网布". It should look like a real ecommerce campaign visual, product card, detail-page module, livestream product card, or marketplace activity creative for the "家居家清" scene. Layout requirements: clear product hero, readable copy zones, clean selling-point cards, strong promotional atmosphere, controlled spacing, premium commercial design. Avoid real brand logos, real marketplace logos, watermark, QR code, garbled text, fake English, copyrighted characters, irrelevant text blocks, and distorted product proportions.

生成一张 ４：５ 竖版电商促销卖点图，主题为「人体工学椅促销图」。商品与场景：人体工学椅放在现代书房，腰托和扶手被卖点卡标注，灰白背景。画面必须包含可见中文文案，主标题写「久坐不累」，促销角标写「到手好价」，三个卖点短句分别写「腰背支撑」「高度可调」「透气网布」。用途是「家居家清」场景素材，风格像真实电商活动页、商品卡、详情页或直播间商品图。版式要求：商品主视觉清楚，文案分区明确，卖点卡片可读，留白干净，促销氛围明显但不要乱。限制：不要出现真实品牌、真实平台标志、水印、二维码、乱码、伪英文、侵权角色或无关大段文字。