Infographic 3D Stone Stair Evolution Timeline

{
  "type": "evolution timeline infographic",
  "instruction": "Use REFERENCE_0 as the structural foundation, transforming the flat vector design into a highly realistic 3D infographic. Replace the smooth ramp with a distinctive stone staircase, and upgrade all organisms into photorealistic 3D models.",
  "style": {
    "background": "{argument name=\"background style\" default=\"vintage textured parchment\"}",
    "staircase": "{argument name=\"staircase material\" default=\"realistic textured stone blocks\"}",
    "subjects": "{argument name=\"organism style\" default=\"highly detailed photorealistic 3D render\"}"
  },
  "layout": {
    "main_title": "{argument name=\"main title\" default=\"Human Evolution\"}",
    "sections": [
      {
        "position": "left sidebar",
        "count": 8,
        "labels": ["L0: Single-Celled Life", "L1: Multicellular Organisms", "L2: Animal Kingdom", "L3: Chordates", "L4: The Move onto Land", "L5: Mammals", "L6: Hominid Evolution", "L7: Homo sapiens Era"]
      },
      {
        "position": "upper right corner",
        "title": "Gained Functions / Lost Functions",
        "description": "legend with plus and minus icons"
      },
      {
        "position": "bottom center",
        "title": "Key Evolutionary Milestones",
        "count": 6,
        "description": "includes a timeline of 6 silhouette graphics showing evolution from ape to human"
      }
    ],
    "centerpiece": {
      "description": "A winding stone staircase with 25 numbered steps, each displaying a specific organism.",
      "count": 25,
      "notable_elements": [
        "Step 07: jellyfish",
        "Step 09: ammonite",
        "Step 10: trilobite",
        "Step 24: upright walking human",
        "Step 25: {argument name=\"future evolution concept\" default=\"glowing cosmic silhouette with a question mark\"}"
      ]
    }
  }
}