html,
body {
  position: relative;
  height: 100%;
}

body {
  background: #eee;
  font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: #000;
  margin: 0;
  padding: 0;
}

.swiper {
  width: 100%;
  height: 800px;
  position: relative;
}


/* 前进后退按钮 样式覆盖 */
.swiper-button-next, .swiper-button-prev {
  opacity: 0;
  color: #fff !important;
  width: 48px !important;
  height: 96px !important;
  background: rgba(0, 0, 0, 0);
  transition: all 0.4s;
}

.swiper:hover>.swiper-button-next, .swiper:hover>.swiper-button-prev {
  opacity: 1;
}


.swiper-button-next {
  border-top-left-radius: 10px;
  border-bottom-left-radius: 10px;
  right: 0 !important;
}
.swiper-button-prev {
  border-top-right-radius: 10px;
  border-bottom-right-radius: 10px;
  left: 0 !important;
}

.swiper-button-next:hover, .swiper-button-prev:hover {
  background: rgba(0, 0, 0, .3);
}

.swiper-button-next:after, .swiper-button-prev:after {
  font-size: 18px !important;
  font-weight: 800 !important;
}


.swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.swiper-slide img {
  display: block;
  width: 100%;
  height: 800px;
  object-fit: cover;
}

.swiper-scroller {
  position: absolute;
  left: 20%;
  bottom: 10px;
}

.swiper-side {
  width: 2px;
  height: 16px;
  background-color: #fff;
  position: absolute;
  left: 10px;
  top: 82px;
  z-index: 100;
}

.swiper-scroller .swiper-scroller-list {
  position: relative;
  list-style: none;
  height: 140px;
  overflow-y: hidden;
  width: 300px;
}

.swiper-scroller .swiper-scroller-list li a {
  padding: 6px 40px;
  display: block;
  white-space: nowrap;
  font-size: 14px;
  color: #fff;
  cursor: pointer;
  font-weight: 300;
  text-decoration: none;
  visibility: visible;
}

.swiper-scroller .swiper-scroller-list li {
  opacity: 0;
  position: absolute;
  left: 0;
  top: 0;
  transition: all 0.4s;
}

.swiper-scroller .swiper-scroller-list li:nth-child(1) {
  opacity: 0;
}

.swiper-scroller .swiper-scroller-list li:nth-child(2) {
  opacity: 0.5;
  transform: translateY(30px);
}

.swiper-scroller .swiper-scroller-list li:nth-child(3) {
  opacity: 1;
  transform: translateY(60px);
}

.swiper-scroller .swiper-scroller-list li:nth-child(3) a {
  font-size: 14px;
  font-weight: 600;
}

.swiper-scroller .swiper-scroller-list li:nth-child(4) {
  opacity: 0.5;
  transform: translateY(90px);
}

.swiper-scroller .swiper-scroller-list li:nth-child(5) {
  opacity: 0;
  transform: translateY(120px);
}

.banner-content {
  padding-top: 80px;
  box-sizing: border-box;
  position: relative;
  height: 800px;
  width: 100%;
  text-align: center;
  color: #fff;
  background-position: center center;
  background-repeat: no-repeat;
  background-size: auto 800px;
}

.banner-text {
  margin: auto;
  width: 400px;
  position: relative;
  transition: all .6s ease;
  z-index: 250;
}

.top-content {
  opacity: 0;
  transition: opacity .6s linear .1s, transform .6s cubic-bezier(.215,.61,.355,1) .1s;
  transform: translateY(-30px);
}

.banner-logo {
  margin-top: 16px;
  margin-bottom: 16px;
  width: auto !important;
  margin: 16px auto 16px;
  opacity: 0;
  transition: opacity .6s linear .1s, transform .6s cubic-bezier(.215,.61,.355,1) .1s;
  transform: translateY(-60px);
}

.banner-slogen {
  font-size: 20px;
  line-height: 24px;
  font-weight: 500;
  opacity: 0;
  transition: opacity .6s linear .1s, transform .6s cubic-bezier(.215,.61,.355,1) .1s;
  transform: translateY(-90px);
}

.banner-btn-box {
  display: inline-flex;
  justify-content: center;
  position: relative;
  z-index: 400;
}

.banner-btn-box a.banner-button {
  border: 1px solid #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  padding: 5px 16px;
  border-radius: 64px;
  margin: 0 8px;
  opacity: 0;
  transition: opacity .6s linear .1s, transform .6s cubic-bezier(.215,.61,.355,1) .1s;
  transform: translateY(-60px);
}

.banner-btn-box a.banner-button:hover {
  background: rgba(84, 48, 48, 0.09);
}

.banner-btn-box a.banner-button .text {
  color: #fff;
}

.banner-btn-box a.banner-button .icon {
  color: #fff;
  display: inline-block;
  font: 14px / 1 FontAwesome;
  font-size: inherit;
  text-rendering: auto;
  -webkit-font-smoothing: antialiased;
  margin-left: 8px;
  font-size: 14px;
  width: 14px;
  height: 14px;
}

/**
* active
**/
.swiper-slide-active .top-content {
  transform: translateY(0) translateZ(0);
  opacity: 1;
}
.swiper-slide-active .banner-logo {
  transform: translateY(0) translateZ(0);
  opacity: 1;
}

.swiper-slide-active .banner-slogen {
  transform: translateY(0) translateZ(0);
  opacity: 1;
}

.swiper-slide-active .banner-btn-box a.banner-button {
  transform: translateY(0) translateZ(0);
  opacity: 1;
}