A faithful in-browser 3D pole vault at World Athletics dimensions (Technical Rules TR26 and TR28, edition dated 1 July 2026). The pole is a real elastic member: its bending stiffness is derived from the flex rating poles are actually sold by, its force-shortening law is the exact inextensible elastica, and every vault's energy chain is audited. Hand-written WebGL2, no libraries, no model, no network calls. An independent reimplementation of the athletics event; not affiliated with World Athletics. Sources and reconstructions are listed in CREDITS.txt.

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