桥中央那枚木牌的交接

Subject: a slim wooden footbridge, with two grown-ups trading a small round wooden token (plain, unmarked) at its middle. Backstory: they set out from opposite ends and strode inward, each trailing a matching line of damp footprints. Both trails finish at the center plank, where the pair stand face to face at the exact halfway mark. Camera: wide 16:9, symmetrical, pointing straight down from high above. Hands: the giver's four fingers curl across the top of the token and the thumb supports it from below. The receiver's four fingers slide beneath, thumb alongside. Both are dressed in plain, unprinted garments bearing no lettering of any kind. Count: exactly five digits, visible or anatomically accounted for. Nothing else belongs in the image: no banks, water, sky, text, logos or additional figures. Under the bridge, in the alpha channel, sits a soft contact shadow in semi-transparent black that is darkest at the contact point and fades outward. Cutout: the bridge span and the pair only, isolated on a fully transparent background; alpha equals zero, not white, not colored, with no checkerboard pattern and a real alpha channel. Keep the whole span inside the frame, with a clear margin on all sides. Lighting and genre: soft, clear daylight spread evenly, which lets the matching footprint trails, the center plank and the handoff register as a single balanced meeting. Staged editorial photography from directly overhead, the entire image treated as an isolated cutout asset.