@layer tokens {
  :root{
    /* Coin */
    --coin-scene-size: 150px;
    --coin-size: 120px;
    --coin-depth: 8px;
    --coin-shadow: 0 10px 18px rgba(0,0,0,.25);

    /* Dice */
    --dice-scene-size: 200px;
    --dice-size: 80px;
    --dice-depth: 40px; /* half of dice-size */
    --dice-dot-size: 12px;

    /* Surfaces */
    --surface-white: #ffffff;
    --surface-gray-1: #e8e8e8;
    --surface-gray-2: #c0c0c0;
    --edge-gray: #999;
  }
}