An extremely detailed and complex system prompt for Nano Banana Pro, instructing it to act as a 'Theme Worldview Visual Construction Engine.' Given only a single theme/concept, the AI must automatically deduce the world type, narrative tone, visual era, and material system. It then generates a 'Photography-grade image' of an 'Art Shadow Box + Ritual Instruction Card' combination, making the output look like a collected, studied, and used artifact from a complete, believable fictional world. The prompt strictly defines the two-layer composition and style constraints (e.g., use of old paper, wear and tear, text as spells/maxims).
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