Cầu cạn vươn mình lúc bình minh

Create one continuous 12-second cinematic video, aspect ratio 16:9, showing a large elevated road viaduct under construction across a broad green valley. [00-04s] Use a slow aerial crane move from low foreground level toward the first completed piers, with a wide 24mm lens feel. Tower cranes lift precast concrete segments while workers in high-visibility vests, hard hats, gloves, and fall-protection harnesses guide them from secured platforms. Cool dawn light creates long shadows and pale mist between the piers. [04-08s] Track laterally along the deck edge as a segment settles onto temporary supports; show believable weight, cable tension, and controlled hand signals. The concrete surface remains unfinished, with rebar, formwork, and realistic dust. [08-12s] Rise above the structure to reveal the viaduct extending toward distant hills, warm sunlight touching the upper deck while the valley stays softly shaded. Keep all motion stable, precise, and physically credible. No signage, logos, watermarks, or on-screen text. Sound design: low mechanical winches, distant diesel engines, radio chatter without intelligible words, soft wind, and a restrained cinematic bass swell.