头像壁纸：冰霜玻璃

Photorealistic avatar portrait of a young man seen through a frosted glass window, his face formed by thick frost crystals and ice ferns growing across the pane, short dark hair visible behind the misty glass, deep gray eyes barely visible through translucent frost, breath fogging the lower corner of the glass, subtle blue-white frozen texture covering his cheek and jaw, thick frost rime thickening at the pane edges, tiny hexagonal ice dendrites branching across the glass, condensation streaks running down the lower pane, the man's outline softened by the diffusing frost layer, wearing a dark navy coat collar, faint city lights bokeh glowing amber behind the frost, cool icy palette, soft diffused daylight filtering through the glass from behind, close-up front view, shallow depth of field, intricate crystal detail on the glass, winter morning atmosphere, high resolution, 4k