1. Blend all of the dressing ingredients, except the chia seeds, in a blender or with an immersion blender until smooth. Taste and adjust salt and maple syrup as desired. Stir in the chia seeds and set aside.
2. Combine the kale, olive oil, and a generous pinch of salt in a large bowl. Use your hands to massage the kale thoroughly until the leaves have softened and are a shade darker. Add the greens, carrot, and sprouts. Toss the salad with about half of the dressing. Gently stir in the berries, sunflower seeds, and avocado before serving; alternatively, plate the salad mixture and top each serving with the berries, sunflower seeds, and avocado. Serve extra dressing on the side.