Generate a daily nutrition leaflet for calcium and vitamin D3. The image features a milky white and light gray background, with a deep gray headline centered at the top, titled "Calcium and Vitamin D3 Synergistic Nutrition," and a short golden phrase below: "Daily calcium supplementation is better combined." The center uses a simple, non-medically realistic abstract model of the knee joint bone, with a warm orange "Ca" nutrition ball floating on the left and a soft blue "D3" nutrition ball on the right, connected by fine gold threads and surrounded by a few soft-focus particles. At the bottom, use two columns of symmetrical short messages like "Bone Nutrition Support" and "Calcium Absorption Assistance," paired with clean, linear icons. Titles use rational, slightly geometric bold fonts, while auxiliary lines and labels use medium weight sans-serif fonts; Control the text area so that the central graphic remains the main body. Do not include children's figures, medical devices, disease suggestions, exaggerated growth effects, screenshots with white borders, watermarks, or meaningless small text.
