This example displays a simple area chart of S&P 500 prices over time, using a temporal x-axis and quantitative y-axis. The visualization is built with Vega-Lite 5, which compiles the specification from `area.vl.json` into a Vega chart, and is rendered into the page via `vegaEmbed`. The data is loaded from a remote CSV file containing historical daily price records. The area mark fills the region below the line, showing price trends across the date range.