#progress > .circle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
}
#progress .ouro {
  position: relative;
  display: inline-block;
  overflow: hidden;
  margin: 1em;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: none repeat scroll 0 0 var(--loading_color_barbg); /* ベースの色 - 可変 */
  box-shadow: 0 0 10px rgba(0,0,0,0.1) inset, 0 0 25px rgba(0,0,255,0.075);
}
#progress .ouro:after {
  position: absolute;
  top: 9px;
  left: 9px;
  display: block;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: none repeat scroll 0 0 var(--loading_color_background);
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  content: "";
}
#progress .ouro > span {
  position: absolute;
  overflow: hidden;
  width: 50%;
  height: 100%;
}
#progress .left {
  left: 0;
}
#progress .right {
  left: 50%;
}
#progress .anim {
  position: absolute;
  top: 0;
  left: 100%;
  width: 100%;
  height: 100%;
  border-radius: 999px;
  background: none repeat scroll 0 0 var(--loading_color_bar1); /* Ouroborosの色 - 可変 */
  opacity: 0.8;
  -webkit-transform-origin: 0 50% 0;
          transform-origin: 0 50% 0;
  -webkit-animation: ui-spinner-rotate-left 3s infinite;
          animation: ui-spinner-rotate-left 3s infinite;
}
#progress .left .anim {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}
#progress .right .anim {
  left: -100%;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  -webkit-transform-origin: 100% 50% 0;
          transform-origin: 100% 50% 0;
}
/* v3 */
#progress .ouro3 .anim {
  -webkit-animation-duration: 3s;
          animation-duration: 3s;
  -webkit-animation-timing-function: linear;
          animation-timing-function: linear;
  -webkit-animation-delay: 0s;
          animation-delay: 0s;
}
#progress .ouro3 .right .anim {
  -webkit-animation-name: ui-spinner-rotate-right;
          animation-name: ui-spinner-rotate-right;
  -webkit-animation-delay: 0;
  -webkit-animation-delay: 1.5s;
          animation-delay: 0;
          animation-delay: 1.5s;
}
@keyframes ui-spinner-rotate-right {
  0% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(180deg);
  }
  50% {
    transform: rotate(180deg);
  }
  75% {
    transform: rotate(360deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
@keyframes ui-spinner-rotate-left {
  0% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(180deg);
  }
  75% {
    transform: rotate(180deg);
  }
  100% {
    transform: rotate(360deg);
  }
}