Warm-toned black-and-white / slightly sepia realistic film portrait

Vertical 2:3, warm-toned black-and-white / slightly sepia realistic film portrait, beach half-body portrait. A clearly adult, approx. 26 years old East Asian woman, slender oval face, soft but clear jawline, fair skin appearing as bright creamy gray in black-and-white tonality; thin straight dark brows, narrow almond eyes looking directly at the camera from between hair strands, gaze restrained, mysterious, slightly guarded, slender nose bridge, lips naturally full and gently pressed together. Extremely long, jet-black, thick long hair with loose large waves, sea breeze blowing from the side-rear, fluffy and messy at the top of the head, many fine strands sweeping across brows, eyes, nose bridge, and lips, the main hair volume falls along both shoulders and back to the waist, hair ends uneven with real weight. Her back and right shoulder are closer to the camera, upper body turned back looking over her shoulder, shoulders forming a soft arc; she wears a light-colored unbleached linen thin-strap fitted long dress, straight-cut, low underarm line, fabric hugging the torso but not overemphasizing the body, with fine weave and natural creases visible. The background is a bright out-of-focus beach and ocean waves, horizon low and soft; sunlight diffused by sea mist, overall high-key, black hair and light dress forming strong brightness contrast, skin edges with slight soft glow, retaining shadow detail. Cropped above the hips, figure centered slightly right, the looking-back eyes as the visual center; delicate silver-halide grain, slight vignette, and warm old-film paper-base feel, atmosphere lonely, free, with post-sea-breeze fatigue and clarity. No text, no logo, no watermark, no lower-right icon; avoid modern fashion accessories, exaggerated makeup, plastic skin, straight windless hair, extra people, and beach props.