This example shows a bar chart of value by category using D3 v7 in SVG. The chart uses `d3.scaleBand` for the x-axis and `d3.scaleLinear` for the y-axis, with bars and gridlines drawn via `d3.axisLeft` and `d3.axisBottom`. A gradient fill is defined with `linearGradient` stops, and bars include a `<title>` for hover text. The data comes from a local CSV file.