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A highly detailed, semi-realistic digital illustration of a cute red squirrel sitting on a dark, slightly curved tree branch in an autumn forest. The squirrel has soft, fluffy fur with rich reddish-brown tones, a large bushy tail arched upward, and small delicate paws holding and nibbling a nut. Its eyes are large, glossy, and expressive, giving a gentle and adorable feeling. The fur texture is highly detailed with fine strands visible, especially on the tail and around the face.

The environment is a warm autumn forest filled with golden, orange, and red maple leaves. The foreground features a sturdy tree branch with textured bark, slightly bluish-gray in tone, with a hollow knot visible on the right side of the branch. The squirrel is positioned slightly left of center on this branch.

In the background, there are tall tree trunks fading into a soft mist, creating depth with atmospheric perspective. The ground below is covered with fallen leaves in shades of orange, yellow, and red, along with scattered small rocks and pebbles. A few leaves are sharply visible in the foreground on the forest floor.

Lighting is soft, warm, and diffused, as if during early morning or late afternoon, casting a golden glow throughout the scene. The background is slightly blurred (shallow depth of field), emphasizing the squirrel as the main subject.

Color palette: warm autumn tones (orange, amber, golden yellow, soft brown), with subtle contrast from the darker tree branches. The overall mood is cozy, calm, and whimsical.

Style: high-quality digital painting, semi-realistic with slight stylization, smooth shading, soft gradients, ultra-detailed textures, 4K resolution, cinematic composition, depth of field, global illumination, sharp focus on subject, bokeh background.