Isometric Pop-Up Paper Diorama Animation Prompt

2x2 grid, 16:9, do this for most popular jobs of 1850, 1940, 1990, 2026 I(0) = blank matte background with a single flat folded page. I(1) = final isometric pop-up paper diorama of $ THEME, layered kirigami planes standing up from a central spine, the open spread cut to silhouette $ SHAPE. ∂I/∂t = Δ(I, $ THEME, $ SHAPE) with constraints: isometric projection, back-to-front plane order, valley/mountain fold logic, paper-craft materiality, silhouette adherence, soft paper shadows. Integration: t=0.0–0.15: the flat page and faint crease guides for silhouette $ SHAPE and each fold line appear. t=0.15–0.4: the rearmost backdrop plane (the setting of $ THEME) rises first along the spine - layered cut-paper skyline or backdrop. t=0.4–0.7: middle planes fold up in sequence, each a cut-paper scene of $ THEME, tabs and slots visible where layers interlock. t=0.7–0.9: the frontmost pop-up elements spring forward, completing the depth and the open spread's silhouette. t=0.9–1.0: soft shadows fall between paper layers, small captions appear on tab labels along the spine, final polish. Output I(1) as an 8K pop-up paper-diorama masterwork.