A vintage technical illustration style showing a cross-section of four distinct horizontal layers stacked like geological strata, each layer rendered in muted sepia and copper tones. The bottom layer depicts coiled copper wires and vacuum tubes representing raw network infrastructure. Above it, a layer of intricate clockwork gears and mechanical pistons meshing together. The third layer shows fluid flowing through glass laboratory tubes and beakers with measuring instruments. The top layer features an elaborate brass stopwatch mechanism with spinning components. A single red thread weaves vertically through all four layers, connecting them. The entire composition has the appearance of an aged engineering diagram from the 1940s, with subtle paper texture and slightly faded edges.