生命之树海报

Generate an elegant scientific poster visualizing a stylized tree of life as a radial phylogeny diagram on an ivory background. Use fine botanical-meets-scientific linework with a restrained palette of moss green, deep teal, amber, plum, and charcoal. The diagram should branch outward from a central root labeled with crisp in-image text "Last Universal Common Ancestor". Main clades should be labeled "Bacteria", "Archaea", and "Eukaryota", with outer branches including "Plants", "Fungi", "Animals", "Protists", and "Cyanobacteria". Add a title at the top reading "Tree of Life" and a subtitle "Simplified Radial Phylogeny". Include a small scale note "Approximate branching only". Keep labels readable and branch geometry balanced, with clean hierarchy and educational clarity. The overall design should feel like a museum-science graphic: structured, accurate in spirit, visually rich, and rendered with crisp text and refined detail.