核桃剖面裡的細密褶皺

Natural-history illustration of one open walnut shell half containing its kernel and one closed walnut beside it. Fine watercolor glazing and ink stippling, anatomically plausible folded kernel, clear shell thickness, warm white paper, soft understated cast shadow, no labels. Square 1:1 standalone finished image. No text, logos, watermark, border, multi-panel layout or contact sheet.

博物風插畫：半隻開啟的核桃殼內保留果仁，旁邊是一隻完整核桃。細水彩罩染與墨點，果仁褶皺形態合理，殼厚清楚，暖白紙底，輕微投影，不要標籤。 方形1:1獨立完整成圖。不要文字、標誌、水印、邊框、多格排版或聯絡表。