Create a 15-second ultra-photorealistic live-action cinematic horror sequence set at 3:17 AM inside a quiet, aging apartment building. A young woman wearing a loose charcoal-gray sweatshirt, dark blue jeans, and simple white sneakers enters an old elevator alone. Natural facial features, realistic skin texture, subtle nervous expressions, believable human movement. 0–3 sec: The woman enters the elevator and presses a floor button. The doors close. The elevator lights briefly flicker and the elevator suddenly stops with a heavy mechanical jolt. She looks at the floor display, confused. The display reads 3:17 AM on a small digital clock mounted inside the elevator. 3–6 sec: The doors slowly open. Instead of the expected floor, there is a long, completely empty apartment corridor with faded walls and weak fluorescent lights. She cautiously looks out. At the very end of the corridor, a partially open apartment door slowly swings inward by itself. 6–9 sec: The elevator doors close and immediately reopen. The corridor looks identical, but now a young woman stands motionless beside the distant doorway. She is wearing the exact same charcoal sweatshirt, jeans, and sneakers. The original woman slowly realizes the stranger has her exact face. 9–12 sec: The double suddenly begins walking toward the elevator. At first she moves normally, then gradually accelerates into an unnaturally fast sprint. The original woman panics and repeatedly presses the door-close button. The fluorescent lights flicker rapidly as the double approaches. 12–15 sec: The elevator doors begin closing just as the double reaches the doorway. The original woman desperately backs away. The doors slam shut between them. Hard cut to the empty corridor. A smartphone lies on the floor near the elevator, screen glowing and displaying 3:17 AM. The screen flickers once. The corridor lights go completely dark. Ultra-photorealistic live-action horror, cinematic 16:9, realistic apartment-building textures, natural human skin, believable facial expressions, practical fluorescent lighting, deep shadows, subtle handheld camera movement, realistic low-light exposure, authentic motion blur, restrained color grading, escalating psychological tension, disturbing but non-gory horror, realistic human anatomy and movement, no CGI-looking characters, no glowing eyes, no monsters, no supernatural visual effects, no gore, no text overlays, no subtitles, no watermark. Maintain perfect character consistency throughout: identical face, hairstyle, body proportions, clothing, and shoes.