A cinematic sci-fi scene. A futuristic soldier wearing a full tactical suit with a reflective oxygen helmet stands still in the middle of a mist-filled corridor with glowing blue vertical lights. The camera slowly orbits around the soldier, revealing his detailed suit and the faint reflections in the glass of the helmet. The environment is metallic, damp, and cold, with diffused blue lighting and soft fog. Cut to a closer low-angle shot. The soldier begins to walk slowly forward toward a glowing vertical portal at the end of the corridor. The ambient light pulses faintly along the walls. The atmosphere is tense and solemn, emphasizing isolation and mission urgency.