The movement itself has evolved far beyond the vaults and rolls of the 21st century. Today's runners are often augmented. Lightweight cybernetic implants enhance muscle fiber reaction times, while specialized friction-grip footwear allows them to run up near-vertical surfaces of glass and carbon fiber. They do not just jump; they glide, using compact gravitational dampeners to soften falls from heights that would have been fatal to their ancestors. Every ledge is a stepping stone, every billboard a launchpad.

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