Generate a mathematical visualization video showing the fractal evolution of a cube with the following recursive rules: 1. **Initial State**: Start with a single large cube. 2. **Iteration 1**: - Cut the cube in half along its central x-axis (parallel to the yz-plane). - **Remove the right half** completely. - **Replace the removed space** by filling it with 16 identical smaller cubes, each with side length 1/4 of the original cube. 3. **Recursion**: - Apply the same process to every new smaller cube: - Cut each along its central x-axis, - Remove its right half, - Fill the space with 16 even smaller cubes (side length = 1/16 of the original). 4. **Depth**: Visualize 3 iterations (original → 16 cubes → 256 cubes). **Key Requirements**: - Use **3D animation** to show cutting, removal, and filling steps clearly. - Color-code each iteration (e.g., original=blue, 1st-gen=green, 2nd-gen=red). - Add dynamic labels: "Iteration 0", "Iteration 1", etc. - End with a rotating view of the final fractal structure.

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