Generate one premium website background, horizontal 21:9, highest available native quality. Theme: Flat editorial paper collage photographed top-down: matte butter-yellow paper background and small cut-paper semicircles, simple arches and scallops in tomato red, pale blue and cobalt. Real paper fibers, slight natural contact shadows. Shapes lie flat near margins, no 3D sculpture, no glossy material, no gradients.
Scene: Broad empty butter-yellow paper field, a tiny tomato-red half-circle at bottom left, pale blue paper scallop strip cropped along far right, one small cobalt square at upper right. 75 percent empty.
Emotion: Playfulness, optimism and creative curiosity. Useful for Creative education, stationery, studios, friendly software. Protect deliberate broad quiet negative space for later live website copy, especially Center. Art-directed, aesthetically confident, beautiful natural detail and restrained texture. This is a standalone background asset only, no website layout, words, captions, letters, logos, watermarks, frames or collage grid. No chrome/glass sculptures, futuristic ribbons, toruses, 3D blobs, robots, corporate node diagrams or unrelated props. Keep composition practical for a real website.