Cybersecurity expert, male, 30s, muscular build, short brown hair, glasses, beard, white shirt, black blazer, dark jeans, leather shoes, standing, confident pose, hands behind back, abstract futuristic cityscape background, sleek skyscrapers, neon lights, Domain 3 architecture model diagram floating in front, 3D holographic projections, complex network topology, firewalls, routers, switches, servers, intricate circuit boards, wires, microchips, binary code streaming, soft blue ambient light, cinematic composition, shallow depth of field, realistic rendering.