Sora提示词：A 15-second cinematic 16:9 atmospheric sequence with a sligh
A 15-second cinematic 16:9 atmospheric sequence with a slightly cool tone, soft film grain, and poetic quietness. Begin with tree shadows swaying gently on an outdoor wall, lit by cool ambient light with warm highlights slipping through leaves. Cut to a macro shot of stone pavement with moss and a single fallen leaf moving slightly in the wind. Transition to a still wide shot of a small river or hillside in soft, cool daylight, with subtle warm reflections on the water. Dust or pollen drifting lightly in the air. A single blossom petal or autumn leaf floats through the frame in slow motion, illuminated by a soft beam of warm light. End with a close-up of a flower bud or a quietly blooming flower in mixed cool shadows and gentle warm highlights, symbolizing hope and remembrance. Soft breeze, shallow depth of field, restrained color, poetic and nostalgic.