Use case: productivity-visual Asset type: Dokument-Deckblatt for RAITEC corporate media. Output format and framing: Portrait composition approximately A4 ratio 1:1.414, requested 2160 x 3056 pixels; maximize available output resolution. Primary request: A premium portrait document cover background. Top 65% is clean near-white empty area for editable report title, subtitle and author. At the lower-right, refined layered folded porcelain architectural surfaces with a navy inner plane and a single orange fold, occupying only bottom 30%. Soft sculptural shadows confined to lower section. Keep top-left and upper-right quiet for original logo later. No mockup paper edges, no text or layout guides. Color palette: RAITEC visual palette: deep navy #05345d, steel gray #516f82, blue-gray #718797 and #91a1af, orange accent #f7a824 and #faba57, neutral white. Treat hex values as art direction, not pixel-perfect print colors. Constraints: Generate exactly one finished standalone image, not a grid, mockup, presentation screenshot, or sheet. No text, letters, numbers, logos, brand marks, watermarks, UI labels, crosses or imitation logo. Refined corporate art direction, precise architectural forms, restrained orange accents, realistic lighting and materials. The geometry may echo folded triangular facets without reproducing the RAITEC mark.