Pyramid
Compare ordered stage values with proportional heights.
Use a pyramid for a small ordered hierarchy. Row heights are proportional to values, not polygon areas. Percentages share the visible-stage sum; they do not express conversion or retention against the first stage.
Supply 1–16 complete stages with stable unique IDs, labels and finite nonnegative values. Source order is preserved. Zero remains navigable without a painted or touch polygon. Hidden stages reflow the visible silhouette.
options.layout.reversed defaults to true: the apex is at the top and the silhouette expands downward. Set false for a bottom apex. Configure stage colours, legend, labels, individual detail and pinning. Neck options, axes, viewport, stacking, shared tooltip, markers, crosshair and point overrides are rejected.