Black and yellow fitness triptych poster prompt

Create a high-end cinematic 3-panel (triptych) fitness editorial poster in a bold black and vibrant yellow color theme inspired by modern gym branding. The design should feel like a premium fitness campaign with strong contrast, clean layout, and powerful visual hierarchy. Subject: a fit young woman (not based on any real person), athletic and toned body, glowing skin, confident expression, strong posture, hair tied in a sporty ponytail, powerful and focused energy. Styling: premium gym wear (sports bra and shorts set) in black with yellow accents, clean white sneakers, minimal accessories like wrist wraps or a fitness band. Environment: minimal industrial concrete studio with dramatic side lighting, deep shadows, and glossy floor reflections, subtle gym elements like dumbbells or a vintage boombox, background blending black shadows with bold yellow graphic textures. Panel composition (all in one image): top panel is a hero shot with the tagline "BUILT IN SILENCE. PROVEN IN RESULTS."; bottom left shows her seated after a workout with the tagline "NO SHORTCUTS. ONLY HARD WORK."; bottom right shows a standing power pose with the tagline "DISCIPLINE DEFINES YOU. SHOW UP EVERY DAY." Design style: ultra-realistic 4K resolution, bold black and yellow color dominance, modern gym poster aesthetic, strong shadows and cinematic lighting, clean bold typography, slight grain, balanced layout like a professional sports-brand ad.