[Macro, static camera, no parallax] Close-up of fine sand particles in warm beige and soft grey t...

[Macro, static camera, no parallax] Close-up of fine sand particles in warm beige and soft grey tones; no piles, no growing mounds, no visible surface where sand accumulates. Motion is loop-friendly: particles drift down at a steady, hypnotic pace and gently dissolve/fade out near the bottom edge, giving the illusion of infinite flow; new particles subtly appear at the top to maintain the cycle. No sudden gusts or chaotic motion; pace is slow and rhythmic. Soft, warm, diffused lighting with subtle volumetric rays; no harsh shadows, smooth color transitions. Frame at 10 seconds visually matches the start for seamless looping; no jump or cut. High detail, 4K, calm and cozy atmosphere, minimal camera shake, steady exposure. ASMR sounds: continuous soft sand trickling, very low volume, no sharp impacts, a gentle rustling texture, steady soothing background hum; audio is consistent across the 10 seconds and loops seamlessly.