Generate a vertical high-end product poster on the theme "LUMEN Perfume · Bamboo Shadows After Rain." The main subject is a modern perfume bottle, product name "BAMBOO RAIN." Place the bottle slightly below center as the absolute visual focal point. Transparent glass material, square minimalist silhouette, pale teal-green liquid, silver cap, white minimalist label. Do not make it an ordinary e-commerce detail page; instead, let the modern perfume bottle enter a world of ancient painting. Reconstruct the product with the language of ancient painting: fine dense linework, soft elegant coloring, rice-paper texture, classical negative space, light ink wash, scroll-like rhythm. The bottle must remain clearly recognizable — glass contour, cap structure, transparent liquid, and label layers — but rendered in ancient gongbi fine-brush and light color, not realistic photography. Around the product add only a few Eastern narrative elements: a light-toned low table, a few light-ink bamboo leaves, fine water ripples, a gray-blue rock, a few wisps of mist after rain. In the lower-left, add a small-scale ancient-painting figure holding a paper umbrella, pausing beside the bottle and looking up at the product, as if encountering a modern object inside an old painting. Keep the background minimalist, without crowding it with buildings, auspicious clouds, or complex borders. Layout: brand name "LUMEN" in the top-right corner, small and refined, minimalist sans-serif font with wide letter spacing. Product name "BAMBOO RAIN" in the negative space to the right of the bottle, medium-small size, not covering the subject. Slogan in very small size: "A SCENT AFTER QUIET RAIN." At the bottom, a minimalist info area with "NEW COLLECTION / 2026.08 /". Overall mood: elegant, distinctive, artistic, Eastern-experimental, strong modern brand feel.