Core Style: Frontal portrait, eye-level composition, natural...

Core Style: Frontal portrait, eye-level composition, natural human proportions, sporty sexy style, realistic portrait texture, no AI artifacts, natural muscle definition, 8K HD. Lighting & Effects: Natural light through floor-to-ceiling gym windows, soft sunlight dapples, distinct highlights and shadows on muscle lines, skin with natural sweat sheen, no excessive airbrushing, subtle film grain. Character Setting: 20-22 year old female, long face, expressive raised eyebrows, narrow and alluring fox eyes with upturned corners, refined aquiline nose, small cherry lips, energetic gaze, grapefruit-colored lip tint, healthy wheat-toned skin, minimal makeup (sunscreen and lip glaze only). Hair: Dark brown high bun with stray hairs on the forehead, voluminous and loose. Outfit: Grey long-sleeved compression top (slim fit), black high-waisted gym shorts (2cm above mid-thigh, modest), white sneakers, fitness tracker on wrist. Pose & Atmosphere: Standing frontally, one hand making a peace sign, the other hand on the hip, background with gym treadmills and dumbbells, vibrant and sexy atmosphere.