Create a masterful oil painting in the style of the Ghibli background style. The painting should depict a majestic, awe-inspiring natural landscape that captures the sublime beauty and grandeur of the American wilderness. The setting features a vast, sweeping vista of mountains, forests, and a pristine river winding through the valley. In the foreground, a rugged, rocky outcrop adorned with vibrant wildflowers overlooks the serene river, while a majestic eagle soars high above, symbolizing freedom and the untamed spirit of nature. The middle ground includes dense forests with towering trees, their leaves tinged with the warm hues of autumn, and a cascading waterfall that feeds into the river below. The background showcases towering, snow-capped peaks bathed in the golden light of the setting sun, their majestic forms mirrored in the tranquil waters of the river. Use a rich palette with vivid, natural colors such as deep greens, golden yellows, and rich blues, contrasted with the warm, glowing tones of the sunset and the cool whites of the snowy peaks. Employ meticulous, detailed brushstrokes to capture the textures of the rocky outcrop, the delicate petals of the wildflowers, and the intricate patterns of the forest foliage. The lighting should be warm and radiant, with the setting sun casting a soft, golden glow over the landscape, creating a sense of harmony and peace. Create varied textures to distinguish between different elements, such as the rough, craggy rocks, the smooth, reflective surface of the river, and the soft, feathery plumage of the eagle. Use a realistic, detailed technique to convey the natural beauty and grandeur of the scene, with a focus on creating a sense of awe and reverence for the wilderness. Employ a balanced composition with a mix of foreground and background elements, ensuring that the rocky outcrop, forest, river, and mountains work together harmoniously to create depth and interest. The painting should evoke a sense of wonder and tranquility, with the majestic landscape and the soaring eagle inviting the viewer to appreciate the sublime beauty of the natural world. The overall scene should capture the essence of the Hudson River School, with an emphasis on detailed, realistic depictions of nature, dramatic light, and the sublime beauty of the American wilderness. Every element should contribute to a harmonious and awe-inspiring composition, creating a painting that celebrates the majestic and tranquil beauty of a vast, untamed landscape.