Chica mecha sobre mar en ruinas

A mecha girl in her mid-teens, pale skin smudged with soot and salt spray, sharp amber eyes reflecting a glowing HUD reticle, waist-length ash-white hair tied in a high ponytail whipping in the sea wind. Matte gunmetal exoskeleton armor plates her shoulders, forearms and shins, with exposed hydraulic pistons at the joints and a chest rig lined with glowing cyan coolant tubes. An oversized oil-stained hangar jacket half slips off one shoulder, a massive rail cannon rests on her right shoulder, and dog tags with a frayed red ribbon hang at her collar. She stands off-center to the left on the rusted edge of a tilted steel platform jutting out over dark water, weight shifted onto one leg, left hand gripping the cannon strap, head turned slightly toward the camera with a quiet, defiant stare. Steam vents from her back thrusters as her ponytail and jacket stream sideways in the salt wind. The background shows a vast derelict sea-city at dusk: colossal megastructures of unknown purpose rise from the ocean in staggered silhouettes, bone-white monolithic towers fused with barnacled steel, cyclopean ring-shaped constructs canted at broken angles, rusted skeletal gantries threaded with dead cables, dark swells rolling between the pylons, and shipwrecks half-swallowed at their feet. Thick sea fog clings to the bases while the upper structures pierce a bruised sky, with scattered faint lights blinking high in the towers like distant eyes. The lighting is moody and low-key: cold teal ambient light from the overcast sky, a warm amber sodium glow leaking from a distant structure on the right side of frame, and hard backlight from a low sun behind the towers carving her silhouette. Volumetric god rays cut through the sea mist, producing wet specular highlights on her armor. Shot on a 35mm anamorphic lens at a slight low angle, looking up past her shoulder toward the structures; medium-wide composition with shallow depth of field blurring the rusted foreground, horizontal lens flares, and fine atmospheric haze compressing the distant megastructures into layered silhouettes. The overall style is a cinematic anime key visual: painterly digital illustration with crisp line art, a desaturated oceanic palette of teal, bone-white and rust punctuated by small warm accent lights, film grain, and a high-contrast editorial poster aesthetic. Format 16:9.