Vintage national park travel poster illustration of Rishiri-Rebun-Sarobetsu National Park, Hokkaido Japan, featuring a majestic snow-capped mountain rising above a calm coastal bay, lush green cliffs and rocky shoreline, colorful wildflowers blooming in the foreground, peaceful blue ocean waves, small traditional fishing boat sailing across the water, flying seabirds in the sky, soft cream-colored sunset atmosphere, flat vector illustration style, mid-century modern travel poster aesthetic, inspired by retro Japanese tourism prints, clean geometric shapes, minimal shading, elegant linework, muted pastel color palette with deep navy blues, teal greens, warm beige and golden tones, ultra clean composition, scenic nature landscape, vintage typography layout, serene and nostalgic mood, highly detailed floral foreground, editorial poster design, no photorealism, screen print texture, vertical composition, aspect ratio 3:4.