Stylized 3D, vertical 9:16, Pixar cinematic. Two-beat. Beat 1
(mouth-world): the ershik (match master_ershik_v) sweeps the gap and
drags the moldy food-chunk (match master_bact_food_v) out in one
pull. Beat 2 (MACRO real): extreme close-up of the real interdental
brush sliding between two enamel teeth, lifting hidden gunk and
plaque out of the gap, clean gap revealed. REVYLINE readable beat 1.
No on-screen text.
