IMAX 航拍冰川史诗（Style 锚定法） prompt

Style: Epic, IMAX-scale aerial cinematography, 70mm large-format texture, ultra-clear deep blacks, restrained color grade favoring glacial blues and pale gold sunlight.

A vast tidewater glacier meets a still arctic fjord at dawn. Cracked ice fields stretch toward distant snow-capped peaks. A faint mist rises off open water; a lone iceberg drifts mid-frame. No people, no boats.

Cinematography:
- Camera: aerial wide shot, slight downward angle, slow forward push toward the glacier face
- Lens: 24mm spherical; deep focus from foreground floes to distant peaks
- Lighting: low-angle sunrise key from camera right; cool ambient fill from open sky
- Mood: monumental, hushed, geological

Actions:
- Camera glides forward at steady altitude; an ice shelf calves silently in the distance
- The chunk slips into the sea, sending a slow, wide ripple toward camera
- The iceberg rolls a quarter turn, revealing translucent blue underbelly

Background Sound: Distant low ice groan; wind across open water; one sharp crack at calving. No music.