Photorealistic cinematic video, Soviet residential courtyard, summer 1989. Four boys are already...

Photorealistic cinematic video, Soviet residential courtyard, summer 1989. Four boys are already running happily toward the camera along the old asphalt courtyard path. They continue running naturally and playfully, laughing together. The boy in the faded red T-shirt and navy shorts leads the group. He briefly looks back toward his friends with a joyful smile, then continues running forward. The other three boys follow him, maintaining natural spacing between each other. Their running movements must be physically realistic, with natural arm swings, correct leg motion and stable body proportions. The mother remains standing on the existing small lower balcony in the background, watching the boys run away. CRITICAL ENVIRONMENT LOCK: The camera remains completely stationary. The five-story brick apartment building, all windows, two small balconies, dark green entrance door, exactly four metal garages, birch tree, bench, climbing bars, wooden fence and asphalt pathways must remain completely unchanged. The mother must remain on the exact same balcony. No balcony enlargement or deformation. All four boys must preserve their original faces, hairstyles and clothing. No morphing faces, no distorted hands or legs, no duplicated people, no changing architecture, no camera shake, no scene transitions. Authentic 1989 documentary film realism, warm summer evening sunlight. No dialogue, no music, no text.