Use case: stylized-concept. Create ONE standalone 16:9 landscape website hero background. The supplied image is the exact style and layout reference: saturated electric cobalt/ultramarine blue printed-paper field, large ivory subject with deepest navy shadows rendered in coarse-to-fine halftone dots, beautiful screenprinted ink grain and lightly distressed paper, sparse acid-lime ink flecks confined to the extreme bottom edge. Match that reference's graphic punch, palette, dot texture, scale and negative space very closely. Replace the seagull with the subject below. Keep left 55–60% open blue for website typography, animal confined mainly to right 45%. Animal rendered entirely with ivory, navy and blue halftones, natural recognizable anatomy with dynamic editorial composition. It should feel like the same screenprint collection as the reference. Background is flat cobalt ink with tactile grain, no scenery or gradients. No words, logos, watermark, borders, UI, collage, decorative symbols or extra animals. High native image quality. Subject: one striking large swallowtail butterfly seen at a slight three-quarter angle in flight, occupying the upper/right half with wings open in an expressive asymmetric V. Ivory wing fields, intricate navy veins and halftone shadows, naturally thin antennae and swallowtail wing tips. Delicate but graphically bold, full wings visible with a modest margin. Keep the left half uninterrupted cobalt. No flowers, plants, landscape or colorful wing markings.