We propose a unified model where gravity emerges from topological charge leakagebetween real and complex sectors of a CY7 manifold (”hourglass spacetime”).Particles correspond to prime-numbered topological defects (p ∈ P), with massesmp ∼ ln p. The Riemann zeta zeros γn quantize gravitational couplings. Predictionsinclude: (a) deviations from 1/r2 gravity at scales below 10−4 m, (b) darkmatter as ∞-defects, and (c) resonance spectra at En = γn × 1.2 TeV.