Parfait with Maple Yogurt Citrus and Pomegranate

Name: Parfait with Maple Yogurt, Citrus and Pomegranate
Ingredients: 2 cups ( 16 ounces ) thick, plain Greek or Icelandic-style yogurt; 1/4 cup ( 2 3/4 ounces ) maple syrup; 1/2 teaspoon ground cinnamon; 1/4 teaspoon ground ginger; 1/4 teaspoon ground cloves; Pinch salt; 5 navel oranges (about 7 1/2 ounces each); 4 pink grapefruit (about 8 ounces each); 1/2 cup (3 ounces) shelled pistachios, roughly chopped , plus more for garnish; 1/2 cup ( 3 ounces ) pomegranate seeds