.product .product-detail:nth-child(1) {
  text-align: center;
}
.product .product-detail:nth-child(1) h2 {
  padding-left: 24px;
}
.product .product-detail:nth-child(1) button {
  display: block;
  margin: 0 auto;
  margin-top: 50px;
}
.product .product-detail:nth-child(2) .imgs {
  position: relative;
}
.product .product-detail:nth-child(2) .imgs img:nth-child(1) {
  margin-left: -24px;
}
.product .product-detail:nth-child(2) .imgs img:nth-child(2) {
  position: absolute;
  top: 125px;
  left: 30px;
  z-index: 10;
  width: 170px;
  height: 200px;
}
.product .product-detail:nth-child(2) .content {
  vertical-align: top;
  margin-left: 50px;
}
.product .product-detail:nth-child(3) .imgs {
  position: relative;
  margin-left: 80px;
}
.product .product-detail:nth-child(3) .imgs img:nth-child(2) {
  position: absolute;
  left: -75px;
  bottom: 0;
  z-index: 10;
}
.product .product-detail:nth-child(3) .imgs img:nth-child(3) {
  position: absolute;
  left: 140px;
  bottom: 0;
  z-index: 20;
}
.product .product-detail:nth-child(3) .imgs img:nth-child(4) {
  position: absolute;
  left: 335px;
  bottom: 0;
  z-index: 30;
}
.product .product-detail:nth-child(3) .content {
  vertical-align: top;
}









/* 动画相关 */

.product .product-detail:nth-child(1) {
  animation: fadeIn 0.5s ease-in-out forwards;
  opacity: 0;
}

.product .product-detail:nth-child(2) .imgs img:nth-child(1) {
  animation: fadeInRight 1.5s ease-in-out forwards;
  opacity: 0;
  animation-play-state: paused;
}
.product .product-detail:nth-child(2) .imgs img:nth-child(2) {
  animation: fadeInRight 1.5s ease-in-out 0.3s forwards;
  opacity: 0;
  animation-play-state: paused;
}
.product .product-detail:nth-child(2) .content {
  animation: fadeInLeft 1.5s ease-in-out forwards;
  opacity: 0;
  animation-play-state: paused;
}

.product .product-detail:nth-child(3) .imgs img:nth-child(1) {
  animation: fadeInLeft 1.5s ease-in-out 0.5s forwards;
  opacity: 0;
  animation-play-state: paused;
}
.product .product-detail:nth-child(3) .imgs img:nth-child(2) {
  animation: fadeInLeft 1.5s ease-in-out 0.8s forwards;
  opacity: 0;
  animation-play-state: paused;
}
.product .product-detail:nth-child(3) .imgs img:nth-child(3) {
  animation: fadeInLeft 1.5s ease-in-out 1.1s forwards;
  opacity: 0;
  animation-play-state: paused;
}
.product .product-detail:nth-child(3) .imgs img:nth-child(4) {
  animation: fadeInLeft 1.5s ease-in-out 1.4s forwards;
  opacity: 0;
  animation-play-state: paused;
}
.product .product-detail:nth-child(3) .content {
  animation: fadeInRight 1.5s ease-in-out 0.5s forwards;
  opacity: 0;
  animation-play-state: paused;
}


.product .core-function {
  animation: fadeIn 0.8s ease-in-out 0.1s forwards;
  opacity: 0;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item {
  opacity: 0;
}
.product .core-function .core-function-list .core-function-item:nth-child(1) {
  animation: fadeInLeft 0.8s ease-in-out 0.1s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(2) {
  animation: fadeInLeft 0.8s ease-in-out 1.1s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(3) {
  animation: fadeInLeft 0.8s ease-in-out 0.2s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(4) {
  animation: fadeInLeft 0.8s ease-in-out 1.2s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(5) {
  animation: fadeInLeft 0.8s ease-in-out 0.3s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(6) {
  animation: fadeInLeft 0.8s ease-in-out 1.3s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(7) {
  animation: fadeInLeft 0.8s ease-in-out 0.4s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(8) {
  animation: fadeInLeft 0.8s ease-in-out 1.4s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(9) {
  animation: fadeInLeft 0.8s ease-in-out 0.5s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(10) {
  animation: fadeInLeft 0.8s ease-in-out 1.5s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(11) {
  animation: fadeInLeft 0.8s ease-in-out 0.6s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(12) {
  animation: fadeInLeft 0.8s ease-in-out 1.6s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(13) {
  animation: fadeInLeft 0.8s ease-in-out 0.7s forwards;
  animation-play-state: paused;
}
.product .core-function .core-function-list .core-function-item:nth-child(14) {
  animation: fadeInLeft 0.8s ease-in-out 1.7s forwards;
  animation-play-state: paused;
}
.animation-running {
  animation-play-state: running !important;
}
@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes fadeInRight {
  0% {
    opacity: 0;
    transform: translateX(-50px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}
@keyframes fadeInLeft {
  0% {
    opacity: 0;
    transform: translateX(50px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}