The Heart of Prajñāpāramitā presents an interactive concept map of Buddhist philosophy, visualizing relationships between key terms like Śūnyatā, Karma, and the Four Noble Truths from the Heart Sutra. The visualization uses D3 v7's force-directed graph layout with `d3.forceSimulation`, featuring draggable nodes and hover tooltips. Users can switch between four visualization types, including a dharma wheel and mandala view, and search for concepts to highlight related connections. The SVG rendering animates node positions and link opacity based on user interaction.