โปสเตอร์บันไดฤดูใบไม้ร่วงสไตล์มินิมอลแบบเซน

Theme: [Oriental Zen minimalist poster]. Subject: [A figure slowly walking up a long staircase], depicted in an ink gray silhouette. Setting & Composition: Deep vertical perspective with minimalist steps extending upwards. Cool white architectural walls, sharp indigo blue geometric staircase shadows, and scattered vivid lemon-yellow ginkgo leaves sparsely dotting the steps and negative space. The figure is positioned in the lower-middle portion. Lighting & Texture: Bright clear natural autumn sunlight, crisp edges, subtle paper texture with fine grain. Color Palette: [Cool white as the wall and background base, indigo blue for staircase shadows and spatial layers, lemon yellow for gingko leaf highlights, ink gray for character outlines]. Style & Constraints: High contrast, light and transparent mood, vitality within stillness, minimalist aesthetic; avoid an overall yellow color cast across the entire image.