骑手身后坍塌的天桥

epic ultra-wide long shot of high-altitude ruined skybridges linking hollow tower husks above a sea of dust clouds. A motorbike rider rockets through brutal switchback curves on a fractured skybridge as the bridge collapses in a domino chain behind them, panels snapping, rebar whipping, concrete chunks tumbling into the abyss. Camera begins extremely wide to show dizzying height, then dives into a low rear tracking chase inches above the deck, matching every lean. Dust blasts forward, cables lash across frame, antennae shear off. Final seconds: the rider banks hard onto a lower broken bridge as the entire span behind drops away.