Wan 2.7 API

Keep the woman's face, body proportions and exact pose unchanged. Replace the white studio with a frozen lake at blue hour: cracked black ice underfoot, bare birch trees and a low band of pale winter light on the horizon, snow drifting sideways. Change her clothing to a heavy cream cable-knit sweater slipping off one shoulder over black opaque tights, with a scarlet wool scarf loose around her neck and scarlet mittens in one hand. Add wind-blown hair, frost on her eyelashes and faint breath vapour. Relight the whole image with cold pale blue ambient light and a weak amber sun grazing her shoulder from behind. Everything desaturated except the scarlet scarf. No text, no logos.