A beautiful 20-year-old woman with an athletic figure and medium round breasts

A beautiful 20-year-old woman with an athletic figure and medium round breasts leans against a tree at dawn. Her long, flowing azure blue hair is styled in a high ponytail. Her hair is a gradient of deep blue to light blue. She has green eyes, long eyelashes, and detailed facial features, including a beautiful smile. The scene is serene with soft morning sunlight and light fog. She is dressed in a white sports top and light grey leggings. The image should be in ultra high-definition (4k or 8k) with high detail.