Main subject: The main subject of the image is a white European-style lighthouse standing in the sea; the light from the lighthouse extends a long streaming trajectory on the sea surface, with tiny star points and origami airplane elements dotted in the air. Scene: The scene is an open deep sea area at night, with natural undulating ripples on the sea surface, and a vast night sky covered with stars above. Style: The style is a healing-style dreamy illustration, with a transparent texture of watercolor staining, soft and delicate brushstrokes, and a romantic and healing overall atmosphere. Tone: The overall tone is based on gradient deep blue and cyan blue, matched with warm golden light elements, the color transition is soft and natural, and the contrast between warm and cool is harmonious. Lighting and shadow: The lighting and shadow focus on the warm golden beam projected by the lighthouse; the light spreads on the sea surface into a gradually widening gradient light belt, with tiny golden glitter particles distributed on the light belt; the cool-toned sea surface and night sky make the warm light exceptionally soft and bright, the star points also have a faint sparkling texture, and the contrast between light and shadow is comfortable. Composition: It is a vertical long-format composition, with the lighthouse located in the upper-left area of the image; the warm golden light belt extends from the lighthouse to the lower-right of the image, forming a clear visual guiding line, the elements are arranged sparsely and orderly, and the visual focus is prominent. Use: Suitable for vertical promotional poster design, adapting to promotional materials related to healing and inspirational themes.