Young Biker on Winding Mountain Road Portrait

16K ultra-realistic cinematic full-body portrait of an 18-year-old handsome young man with the exact same face, hairstyle, and facial features as in the reference image - do not change or modify the face. He is standing on a mountain road beside a black mountain bike, with one hand firmly on the handlebar and the other casually in his pocket. His body is slightly turned toward the camera with a confident, composed expression. The mountain road stretches behind him, lined with green trees and illuminated by warm golden sunlight. The sky is bright with subtle cinematic lens flare for added depth and realism. He is wearing a white oversized printed t-shirt, light grey cargo pants, white sneakers, and a black cap. The image should capture ultra-detailed textures, lifelike lighting, and rich cinematic tones for a professional, premium look. Use the face from the uploaded reference image and preserve the same facial features - do not alter the face.