A flight through the inside of a gyroid — a triply-periodic minimal surface repeated forever in every direction. The membrane walls glow along their edges: a soft iso-surface halo is integrated down each view ray, so even the walls you never quite touch leave a neon lattice hanging in the dark. Two slow clocks morph the structure as you fly: one breathes the cell period so the whole grid rescales, the other sweeps the wall thickness so thin isolated sheets swell into a dense merged maze and thin back out — the lattice keeps reorganising into a different phase. Cyan walls fade to magenta in the deep pockets, mixed by the field itself. Move the pointer to steer the flight, scroll to accelerate, press to thin the walls into a brighter flare.