This example demonstrates an interactive scatter plot exploring global religious demographics, with circle size encoding population and axes mapping country and religion. The visualization is built using the Vega-Lite API, which composes specifications through JavaScript method chaining, then renders via Vega’s SVG output with tooltips from vega-tooltip. Data loads asynchronously from a CSV (Auto MPG dataset, though the active code references religion and population) using d3.csv, while the vega-lite-api library registers with Vega and Vega-Lite to handle encoding, scaling, and configuration. Custom axis styling and font settings come from a separate config object.