This stacked bar chart shows how IMDb movie ratings are distributed across six genres, with each bar broken into five rating-level segments that sum to 100%. Hovering over a segment reveals the exact percentage for that rating category within the genre. The visualization uses d3.stack() to compute the stacked series, d3.scaleBand() for the categorical y-axis, and d3.scaleLinear() for the percentage x-axis. Mouseover events trigger a custom tooltip that displays the formatted percentage values from the loaded CSV data.