This Sankey diagram visualizes the distribution of a subscription price (Abopreis) from a central source node to two target destinations: the Künstler (artist) receiving 81% and MwSt (tax) receiving 19%. The vertical layout uses hand-crafted cubic Bézier paths in SVG to create three merged pipe-like ribbons that split at a breakpoint. React manages the component state and dimensions, while d3.csv loads the data and d3.select handles SVG rendering. Node circles pulse via CSS animations and expand on hover.