Ecommerce Hero Image: White Background + Bold Chinese Tagline (Shopee/momo Spec)

【用途】設計一張電商商品主圖（hero image），用於 [上架平台] 商品列表首圖，正方形 1:1，純白背景、商品為唯一主角。

【背景與商品】
- 背景純白（#FFFFFF），無陰影雜物、無漸層、無道具，乾淨到可直接去背。
- 商品 [商品名稱] 置中、佔畫面約 70%，正面或四十五度最能呈現賣點的角度，邊緣銳利、對焦清楚。
- 商品下方加一道極淡的接地軟陰影，讓它站得住、又不破壞白底。

【圖上文字｜必須與引號內完全一致、逐字渲染，不得增刪改字】
- 右上角賣點大字：「[賣點短句]」

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Use this for platforms like Shopee, momo, and PChome, where the hero image alone decides whether someone clicks through. These platforms have unwritten rules for hero images — pure white or light background, product filling the frame, ideally a selling-point line — this prompt locks all of that in. Three practical points: first, explicitly specify #FFFFFF for the white background and emphasize 'clean enough to cut out,' otherwise GPT Image 2 tends to add a subtle gray gradient or ambient shadow, which shows up as a dirty edge when placed into a platform's white-background listing slot; second, wrap the selling-point line in quotes and specify 'render exactly as written' — Chinese-text models most often drop strokes or misalign characters on this kind of bold overlay text; third, keep both the text and the product within a safe margin, since Shopee's listing thumbnail crops the edges and anything too close to the border gets cut off. A caveat: the AI-generated product is an 'illustrative visual' — for the real product photo, either shoot it for real or use this as a supplementary lifestyle image, and don't rely on AI-generated text for labeling information like specs, volume, or ingredients — verify that by hand before listing. Generate two or three versions and pick the one with the cleanest text and the purest white background.