This area chart visualizes the daily step count from a Google Fit app for October 2022. The visualization highlights the variation in physical activity, with peaks above 14,000 steps and many low-activity days. Built with D3 v5, it uses `scaleTime` and `scaleLinear` for the axes, and an `area` generator with `curveBasis` to create the smooth filled region. Data is loaded from a CSV file via `csv()`, and the SVG is rendered with axis ticks, labels, and a title.