Generate an SVG as a Thanksgiving greeting card illustration. Festive celebratory style. Background fill #FFF8EC. Draw a large circular autumn wreath centered — lush with oak leaves in red (#EF4444), amber (#F59E0B), orange (#F97316), acorns, berries, small pumpkins — arranged in a full ring. Inside the wreath center, a sunflower shape in gold. Scatter leaf confetti shapes outside the wreath. Rich and festive. No text, no labels, no emoji. Output raw SVG code only starting with <svg.

The image shows a wreath of autumn leaves and pumpkins, with a sun in the center. The leaves are in various shades of red, orange, and yellow, and the pumpkins are a deep orange. The sun is a bright yellow, with its rays radiating outwards. The background is a light blue, giving the image a warm and inviting feel.