Underwater River Ink Rubbing Diptych

Goal: Create a vertical fine-art diptych poster that contrasts a realistic underwater river scene with a traditional Chinese-style ink rubbing interpretation of the same scene, inspired by cultural relic rubbings and quiet Eastern water aesthetics.

Canvas: Portrait orientation, 3:4 ratio. Divide the image into 2 horizontal panels: the top panel occupies about 45% of the canvas and is a vivid underwater photograph-like scene; the bottom panel occupies about 55% and is an aged ivory paper artwork.

Top panel: Show a clear shallow river viewed from underwater, with rippling water surface across the top, turquoise-blue sunlight beams, sandy and rocky riverbed, and aquatic vegetation. Include exactly 5 visible fish: 3 larger silver fish swimming left-to-right across the middle-left, 1 small dark fish near the center-right, and 1 medium fish near the lower-right. Add several rooted aquatic plants, including 3 prominent plant clusters in the foreground, with soft caustic light and natural depth haze. The mood should feel calm, transparent, ancient, and poetic.

Bottom panel: Reinterpret the same scene as a sparse black ink rubbing on warm handmade paper. Use rough, broken, stamped textures like stone-rubbing or bronze-inscription transfer marks, not smooth brush painting. Include exactly 4 fish rubbing silhouettes across the upper half: 2 larger fish on the left, 1 smaller fish near the center, and 1 small fish on the right. Include exactly 3 main aquatic plant rubbing clusters along the lower half, with irregular stems, speckled ink gaps, and distressed edges.

Text content on the lower-left of the paper panel: Set small refined serif text in dark gray. Include the title {argument name="title text" default="Clear Current"}, then the short poem {argument name="poem text" default="Rivers hold\nwhat time forgets."}. Beneath a thin vertical divider line, add {argument name="series text" default="Eastern Waters\nInk Rubbing\nNo.27"}. Add a small square red seal stamp below the text.

Visual style: Elegant museum-poster composition, minimal and contemplative. The top is cinematic underwater realism with teal, cyan, and deep shadow tones; the bottom is monochrome black ink on cream rice paper with subtle grain, stains, and natural fiber texture. Strong contrast between living water above and archaeological ink impression below.

Constraints: Keep the two panels cleanly separated by a straight horizontal boundary. Do not add extra fish beyond the specified counts. Avoid modern UI elements, frames, captions outside the lower-left text block, or decorative borders. Maintain a quiet Chinese antiquarian aesthetic, as if a river ecosystem has been transformed into a cultural relic rubbing.