Create a 9:16 evolutionary timeline infographic using the uploaded authorized layout reference as the structural base. Transform the flat vector layout into a highly realistic 3D infographic on [Background Style]. Replace smooth ramps with distinct [Staircase Material] steps, and show the organisms as [Organism Style]. Use the main title [Main Title] at the top. Build a winding stone staircase with 25 numbered steps, including early cellular life, multicellular organisms, Animalia, Chordata, terrestrial transition, Mammalia, hominid evolution, and the Homo sapiens era. Include specific visual milestones such as jellyfish at step 07, ammonite at step 09, trilobite at step 10, a walking human at step 24, and [Future Evolution Concept] at step 25. Add a left sidebar with L0 through L7 stage cards, a top-right legend for gained and lost functions with plus and minus icons, and a bottom-center key-milestones timeline with six ape-to-human silhouettes. Keep the text clean, educational, and readable where possible, with accurate labels, clear hierarchy, realistic stone texture, detailed organisms, soft shadows, and an elegant museum-science infographic finish. Do not include private information, real institutional logos, extra watermarks, offensive evolutionary claims, unreadable main labels, distorted organisms, or broken numbering.