Generate a clean and minimalist floral design, featuring delicate line art of various flowers and leaves. The lines should be thin and graceful, using soft, muted colors like light pink, pale yellow, and mint green. The design should evoke a sense of simplicity and calm, with each flower and leaf elegantly connected in a continuous flow. Use frequency separation to give the line art a smooth and refined appearance, and apply a subtle vignette effect to draw focus to the center of the design. The clear background allows the delicate floral elements to stand out.