This example renders a stylized lion emoji face using React and SVG primitives. It draws a series of circles and polygons for the ears, face, eyes, mouth, snouts, nose, and brows, with fixed positions computed from constants like `centerX`, `centerY`, `eyeOffsetX`, and `eyeRadius`. The code uses D3 v7 and ReactDOM to mount the SVG into the DOM, while CSS removes the body margin for a clean full-viewport display. The visualization is static, showing how geometric shapes compose a recognizable character.