自然节气封面

[用户输入节气主题], top-down aerial view, vast natural landscape, tiny human figure in the center for scale, minimalist poster composition, negative space for text. Environment: rich natural textures, seasonal scenery, immersive atmosphere. Art Style: textured digital illustration, gouache painting style, stipple texture, noise grain, soft brushstrokes, flat illustration aesthetic with depth. Lighting: soft diffused natural light, ambient illumination, flat lighting, no harsh shadows. Color & Mood: harmonious natural tones, seasonal color palette, serene, healing, tranquil, atmospheric. Quality: 4k resolution, masterpiece, high definition, aesthetic composition, detailed texture.