Mountain Echo with an Axis-Locked Pullout

integrated_multimodal_description: [Shot 1] Live-action, cinematic and photorealistic. The young female hiker shown in <Picture 1> remains on the narrow mountain ridge, preserving her exact facial identity, natural skin texture, brown hair, red insulated hiking jacket, backpack straps, body proportions, front-facing orientation, lighting, background mountains and initial composition. The camera begins in the close head-and-shoulders framing established by <Picture 1>. She remains unaware of the camera and keeps her eyes fixed on one distant point in the valley ahead. A light mountain wind moves only a few loose strands of her hair and slightly shifts the fabric around her collar. She takes one natural breath, gently raises her chin and loudly calls into the valley. The young woman with a clear, strong, natural American voice (S1) shouts with joyful energy: <d>[English] Helloooooooo!</d> Her lips, jaw, cheeks, throat and chest move naturally with the sustained call. Her arms remain relaxed beside her body. Her feet, hips, shoulders and head remain oriented in the same direction; she does not rotate, step, turn, or follow the camera with her eyes. As she begins shouting, the camera pulls out with large amplitude at slow speed while pedestaling upward with small amplitude at slow speed. It travels directly backward along the same optical axis, progressing continuously from a close portrait to a chest-up frame, then to a full-body view, and finally to a wide view of the ridge and surrounding valley. The camera does not orbit, truck sideways, pan around her, or use a digital zoom. Realistic parallax reveals the steep grassy slopes, distant layered mountains and deep valley while the horizon remains stable. As the camera moves farther away, her direct voice becomes quieter and more distant. After a short natural delay, the final syllable reflects first from the left mountain wall and then more softly from the right side of the valley, creating separated stereo echoes that gradually become quieter and more diffuse. She completes the call and remains standing in exactly the same place and orientation. By the end of the shot, she appears as a small red figure on the vast green ridge while the final distant echo fades naturally across the valley.