Rust Sea Mecha Sentinel

[Chinese]
A teenage mecha girl, her pale skin covered in smoke and seawater splashes, her sharp amber eyes reflecting glowing HUD aiming lines; Her waist-length gray-white hair was tied into a high ponytail, flying freely in the sea breeze. The matte gun's gray exoskeleton armor covered her shoulders, forearms, and calves, with exposed hydraulic pistons at the joints, and glowing blue-blue cooling lines hanging from her chest. A greasy-stained oversized hangar coat half-slipped over one shoulder, a giant railgun rested on her right shoulder, and a soldier's badge and worn red ribbon hung from the collar. 
She stood slightly to the left, standing on the rusted edge of a tilted steel platform, which stretched outward above the pitch-black sea; Her weight rested on one leg, her left hand gripping the cannon belt tightly, her head slightly turned toward the camera, casting a calm and defiant gaze. The thruster on her back continuously sped steam, her ponytail and coat wildly drifting to one side in the salty sea breeze. 
The background is a vast, abandoned maritime city at dusk, where gigantic superstructures of unknown purpose rise from the sea, forming scattered silhouettes; Bone-white towers merge with steel structures attached to barnacles, massive circular buildings leaning at broken angles, rusted trusses tangled with discarded cables, dark waves surging between supporting columns, and several shipwrecks half-submerged at the bases. Heavy sea mist lingers at the base of the buildings, towering structures pierce the dark sky, and faint lights flicker from the towers' heights, like distant eyes. 
The painting uses somber and understated lighting: the gloomy sky emits a cool-toned blue-blue ambient light, the distant building on the right side emits a warm amber sodium lamp halo, and the sun hanging low behind the tower creates a strong backlight, outlining its silhouette; volumetric light penetrates the sea mist, and the armor shows moist mirror highlights. 
The lens uses a 35mm anamorphic widescreen lens, shooting from a slightly low angle to look over her shoulder toward the distant architectural complex; medium panoramic composition, with shallow depth of field blurring rusted foreground scenes, accompanied by horizontal lens flare, and delicate atmospheric mist compressing the distant giant buildings into layered silhouettes. 
The overall visual style is cinematic animation, with painterly digital illustrations paired with crisp line art, using a low-saturation ocean tone dominated by blue, bone white, and rust colors, accented with a touch of warm highlights; Film grain is added to present a high-contrast artistic poster texture, with a 16:9 aspect ratio. 

[English]
A mecha girl mid-teens, pale skin smudged with soot and salt spray, sharp amber eyes with glowing HUD reticles, waist-length ash-white hair tied in a high ponytail whipping in the sea wind, matte gunmetal exoskeleton armor plating her shoulders, forearms and shins, exposed hydraulic pistons at the joints, chest rig with glowing cyan coolant lines, oversized oil-stained hangar jacket half slipping off one shoulder, a massive rail cannon resting on her right shoulder, dog tags and frayed red ribbon at her collar , standing 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 camera with a quiet defiant stare, steam venting from her back thrusters, her ponytail and jacket streaming sideways in the salt wind , a vast derelict sea-city at dusk, colossal megastructures of unknown purpose rising 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, shipwrecks half-swallowed at their feet, thick sea fog clinging to the bases while the upper structures pierce into a bruised sky, scattered faint lights blinking high in the towers like distant eyes , moody low-key lighting, cold teal ambient from the overcast sky, warm amber sodium glow leaking from a distant structure camera-right, hard backlight from a low sun behind the towers carving her silhouette, volumetric god rays cutting through sea mist, wet specular highlights on her armor , 35mm anamorphic lens, slight low angle looking up past her shoulder toward the structures, medium-wide shot, shallow depth of field with foreground rust in soft focus, horizontal lens flares, fine atmospheric haze compressing the distant megastructures into layered silhouettes , cinematic anime key visual, painterly digital illustration with crisp line art, desaturated oceanic palette of teal, bone-white and rust punched by small warm accent lights, film grain, high-contrast editorial poster aesthetic . Format 16:9.