Based on the provided white-background product images, generate a detailed poster highlighting the core selling points of ergonomic office chairs. The product structure retains a white frame, gray mesh backrest, adjustable headrest, armrest, lumbar support, and five-claw wheels, with realistic proportions and no branding revealed. The overall design features a white-gray modern office style. On the top left side, write "6 Reasons" in large Hei font, accompanied by small English auxiliary text; Under the first golden gradient banner, one large card plus two small cards explain the armrest, headrest, and seat cushion; Under the second banner, an asymmetric card displays dual back support, elastic lumbar support, and reclining modes. Copywriting Usage: Ergonomic design Adding extra points for comfort Six main reasons 90-degree foldable armrests easily close to the table 2D adjustable headrest fits neck support Elastic support cushion for more comfortable sitting for extended periods Double back support design distributes back pressure Elastic lumbar support dynamically fits the body shape Relaxed recline mode: Relax easily during work breaks Chinese is in Hollywood Chinese Simplified, with the main title in black bold, supplementary information in gray, and yellow only for banners and arrows. The text inside each card should be placed in the image blank area, so as not to block the key structure of the chair; No obvious text shadows are added. Icons/Labels: Uses thin yellow arrows, soft indicator lines, and simple local magnification frames, with clear edges and no jagged edges. Output size: '750 x 2070px' Avoid: people, real brands, desktop clutter, readable models, watermarks, deformed chair legs, excessive text, and overlapping cards.