Studio product film for wireless earbuds

GOAL: a studio product film for wireless earbuds: case opens, buds rise to the viewer, everything clicks shut. OUTPUT: one self-contained HTML file, three.js 0.160.0 from jsdelivr (importmap), 960x1080. TIME: 6-second loop, 60 fps = 360 frames, 120 BPM (1 beat = 30 frames). Hits land on beats. MODEL (1 unit = 1 cm, primitives with bevels): case 6.0 x 4.6 x 2.2, 1.0 edge radius, split at 3.3, back-hinged lid, 0.06 split bevel, 0.045 chrome wire around the seam. Inside: D97757 deck, two dark elliptical wells. Buds: ellipsoid head 1.6 x 1.5 x 1.5, lathed silicone tip, 1.6 oval stem with a chrome end cap, dark grille. Seated heads sit flush with the deck. LOOK: satin ceramic white F4F1EC (roughness 0.38, clearcoat 0.35), chrome (metalness 1, roughness 0.05), D97757 on the deck only, ink 1C1B1A, tips E4E0DA. Backdrop F0EDE8 center to DEDAD3 corners, dithered. Key FFF4E8 3.0 upper front left, soft shadows; fill E8EEF5 0.6 low right; rim FFFFFF 4.0 upper back right. Reflections: PMREM studio built in code (warm gray dome, overhead and key softboxes, rim strip). Contact shadows, opacity 0.55. Neutral tone mapping, 8% vignette, 2% grain seeded per frame. SHOTS: 0.0 to 0.5 s: a 2.4-wide studio strip (from 5.5 s) sweeps left to right, glinting across the closed lid and seam. 0.72 to 0.95 s: anticipation: lid presses 1.5 degrees shut, case squashes 2%, hold 3 frames. 1.0 s: lid springs to 100 degrees (damping 0.6, about 10% overshoot, settled by 1.4 s). 1.5 s: buds rise 4.0 out of the wells, right first, left 4 frames later (damping 0.7). From rise frame 8 they tilt 14 degrees outward and turn 35 degrees to camera on a looser spring (damping 0.5): stems swing through and settle. 2.0 s: camera push-in. 2.4 to 4.0 s: hold, buds float 0.05 on a 1 s sine. 3.0 s: second glint crosses the buds. 4.0 s: buds straighten (0.2 s) and descend (easeInOutCubic, 0.45 s), seating with a 0.05 magnetic dip. 4.75 s: lid falls (easeInCubic), shuts exactly at 5.0 s, bounces 3 degrees, settles by 5.3 s; case recoils 1.5%. 5.5 s: next glint starts. CAMERA: fov 30, never parked. Azimuth 34 to 10 degrees from 5.6 s to 4.0 s (easeInOutSine), back by 5.6 s (easeInOutCubic). Distance creeps 21 to 20.2, pushes to 16 at 2.0 s (easeOutExpo, 0.8 s), returns 4.0 to 5.6 s (easeInOutCubic). Buds up: elevation 12 to 19 degrees, target height 2.3 to 4.2. BANNED: purple or blue gradients, glow orbs, bloom, neon, lens flares, particles, generic spinning turntables, dark backgrounds, text. QA: renderAt(t) draws exactly time t, seeded noise only. Stills around every hit; frame 359 flows into frame 0.