四個立方體，展現不同時代的微縮場景：從古代聚落到數位未來

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2x2 grid, do this for different years of vastly different eras: ERA_TO_CUBE_SOLVER  INPUT ::= [TOPIC], [ERA]  STEP_1 :: infer era identity - time period or stage - dominant materials - key tools or artifacts - social/technical/cultural context - built environment or natural environment - representative agents or figures if relevant  STEP_2 :: compress into cube - large objects define cuboid edges - medium objects build internal scenes - small objects fill gaps - top, side, and front faces remain visible - everything stays inside a strict rectangular volume  STEP_3 :: create module text - large era label - short subtitle - compact bullet list - no fixed facts unless supplied  STEP_4 :: repeat across eras - preserve identical visual grammar - increase or transform complexity chronologically