Generate a poster for the lumbar support cushion detail page based on the provided white-background product images. The background is pure white to extremely light gray, with two lines of dark gray titled "Zoned Support / Waist Fit" in the upper middle, and a line of light gray below explaining the background. The center is a four-thirds view of a gray lumbar support, with the central groove marked by an orange curve, and the wing-shaped sections on both sides are marked with four dashed directional arrows and three circular numbers A, B, and C. At the bottom is a white rounded information card, evenly divided into three columns, each accompanied by orange circular letters and a short title. Bottom copy: "A. Groove design / Stretch freely," "B. Middle support / Stable fit," "C. Wrap design / Gentle wrapping." The product maintains the gray hourglass silhouette, central groove, and rounded side wings, with the surface fabric adjusted along the edges. The original brand information of the product only retains the "MOCKUP" and "EMBRACE YOUR BEAUTY, UNLEASH YOUR POWER" small woven label. The font is modern sans-serific, with titles in medium bold and centered, and function card titles in bold. Avoid spillover from medical images, treatment descriptions, original brands, parameters, prices, watermarks, and text.