生态步道桥：湿地上的架高木栈

Design a raised boardwalk bridge crossing a wetland, detailed to minimise its footprint. Show a narrow timber walkway carried on slim circular piles driven at wide centres, the piles left visible where they enter the water so the structure appears to touch the ground as little as possible. Detail the deck as hardwood boards with a consistent gap allowing light and rain to reach the water beneath, its edge unrailed where the drop is low and fitted with a simple slim rail only at the deeper sections. Show the alignment curving to avoid the densest reed beds rather than cutting straight through, with a widened bay at one point forming a viewing platform with a low bench and a screen of vertical timber slats with viewing slots at seated and standing height. Detail the wetland with reeds, open water, water lilies and visible birdlife, with the boardwalk's reflection in the still water. Show the boards weathered silver and slightly mossy at the shaded end. Include two visitors with binoculars at the screen. Show soft early-morning light with mist. Photorealistic, quiet, silver timber and green, eye-level view along the boardwalk.