Vertical 9:16 realistic video, natural home living room setting, daylight through windows. A middle-aged woman with short hair stands sideways, holding a smartphone at chest level. At the start, her posture is relatively neutral. Over time, she gradually develops a hunched posture: head slowly tilts forward, neck protrudes, shoulders round inward, upper back curves more noticeably, chest collapses slightly, conveying prolonged phone use and fatigue. The movement is slow and continuous, not abrupt. Camera remains static, eye-level side profile, no text, no subtitles, no visual effects, no medical overlays. Real-life, documentary style, natural lighting, subtle body movement only, emphasizing the gradual worsening of posture.