This line chart visualizes company financial performance from 2018 to 2030, tracking revenue, expenses, and profit in millions of dollars, with each metric shown as a distinct colored line and point markers. Users can hover over the legend to highlight a specific metric while dimming the others. The visualization uses d3.scaleLinear for axes, d3.line for path generation, and d3.axisBottom/d3.axisLeft for ticks. Data is embedded as CSV and parsed with d3.csvParse, while the layout adapts to the container using ResizeObserver.