@import '../normalize.css';
html,
body {
  color: #080808;
  background: #e6e4dc;
  font-size: 14px;
}
ul,
p {
  padding: 0;
  margin: 0;
}
li {
  list-style: none;
}
a {
  text-decoration: none;
  color: #080808;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
.container-fluid {
  width: 100%;
  position: relative;
  overflow: hidden;
}
.clearfix:after {
  visibility: hidden;
  display: block;
  font-size: 0;
  content: " ";
  clear: both;
  height: 0;
}
.fl {
  float: left;
}
.fr {
  float: right;
}
/** back btn**/
.back-text {
  margin-left: 30px;
  font-size: 16px;
/*  font-family: Helvetica Neue LT Pro;*/
  color: #080808;
  font-weight: bold;
}
@media only screen and (min-width: 980px) {
  .container {
    padding: 76px 119px 20px;
  }
  span.back-arrow-left {
    cursor: pointer;
    border-left: 2px solid #080808;
    border-bottom: 2px solid #080808;
    height: 8px;
    width: 8px;
    transform: translate(2px, -1px) rotate(45deg);
    -webkit-transform: translate(2px, -1px) rotate(45deg);
    border-right: 2px solid transparent;
    border-top: 2px solid transparent;
    display: inline-block;
    -moz-transform: translate(2px, -1px) rotate(45deg);
    -ms-transform: translate(2px, -1px) rotate(45deg);
    -o-transform: translate(2px, -1px) rotate(45deg);
    position: relative;
  }
  span.back-arrow-left::after {
    content: '';
    position: absolute;
    left: -5px;
    top: -8%;
    width: 25px;
    height: 2px;
    background: #080808;
    transform: translate(2px, -1px) rotate(-45deg);
    -webkit-transform: translate(2px, -1px) rotate(-45deg);
  }
  .footer {
    font-size: 14px;
    /* margin: 119px 0 20px; */
  }
}
@media only screen and (max-width: 980px) {
  /* .container {
    padding: .4rem .3rem .2rem;
  } */
  .back-text {
    margin-left: .3rem;
    font-size: .17rem;
  }
  span.back-arrow-left {
    cursor: pointer;
    border-left: 0.02rem solid #080808;
    border-bottom: 0.02rem solid #080808;
    height: 0.08rem;
    width: 0.08rem;
    transform: translate(0.02rem, -1px) rotate(45deg);
    -webkit-transform: translate(0.02rem, -1px) rotate(45deg);
    border-right: 0.02rem solid transparent;
    border-top: 0.02rem solid transparent;
    display: inline-block;
    -moz-transform: translate(0.02rem, -1px) rotate(45deg);
    -ms-transform: translate(0.02rem, -1px) rotate(45deg);
    -o-transform: translate(0.02rem, -1px) rotate(45deg);
    position: relative;
  }
  span.back-arrow-left::after {
    content: '';
    position: absolute;
    left: -5px;
    top: -8%;
    width: 0.25rem;
    height: 0px;
    background: #080808;
    transform: translate(0px, -1px) rotate(-45deg);
    -webkit-transform: translate(0px, -1px) rotate(-45deg);
  }
}
.imgbox {
  width: 100vw;
  height: 100vh;
  position: relative;
  overflow: hidden;
}
.imgbox img {
  display: block;
  width: 100%;
  height: 100%;
  position: absolute;
  animation: show 20s infinite;
  -webkit-animation:show 20s infinite;
}
@keyframes show {
  0% {
    opacity: 0;
    filter:Alpha(opacity=0); /* IE8 以及更早的浏览器 */
    z-index: 2;
    transform: scale(1);
  }
  6%,
  25% {
    opacity: 1;
    filter:Alpha(opacity=100); /* IE8 以及更早的浏览器 */
    z-index: 1;
  }
  31%,
  100% {
    opacity: 0;
    filter:Alpha(opacity=0); /* IE8 以及更早的浏览器 */
    z-index: 0;
  }
}
.imgbox img:nth-child(0) {
  animation-delay: 0s;
}
.imgbox img:nth-child(1) {
  animation-delay: 5s;
}
.imgbox img:nth-child(2) {
  animation-delay: 10s;
}
.imgbox img:nth-child(3) {
  animation-delay: 15s;
}
.mask {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: #000;
  opacity: 0.4;
  z-index: 8;
}
.about-content {
  position: absolute;
  top: 18%;
  left: 120px;
  max-width: 75%;
/*  width: 4.79rem;
  max-width: 479px;*/
  z-index: 9;
}
div.about-content p{
  color: #fff;
  line-height: 1.5;
  font-size: 45px;
  font-weight: 300;
}
.down {
  width: 100%;
  text-align: center;
  position: absolute;
  top: 45%;
  left: 0;
  z-index: 9;
}
span.arrow-down {
  cursor: pointer;
  border-left: 3px solid #fff;
  border-bottom: 3px solid #fff;
  height: 20px;
  width: 20px;
  transform: translate(3px, -3px) rotate(-45deg);
  -webkit-transform: translate(3px, -3px) rotate(-45deg);
  border-right: 3px solid transparent;
  border-top: 3px solid transparent;
  display: inline-block;
  -moz-transform: translate(3px, -3px) rotate(-45deg);
  -ms-transform: translate(3px, -3px) rotate(-45deg);
  -o-transform: translate(3px, -3px) rotate(-45deg);
}
@media only screen and (min-width: 980px) {
  .about-article {
    min-height: 80vh;
    overflow: hidden;
  }
  .about-article .article-item {
    margin-bottom: 91px;
    font-weight: 400;
  }
  .about-article .article-item .article-title {
    font-size: 22px;
    margin-bottom: 19px;
  }
  .about-article .article-item .article-text {
    font-size: 18px;
    line-height: 30px;
    font-weight: 300;
    opacity: 0.7;
  }
}
@media only screen and (max-width: 980px) {
  .about-content {
    margin: auto;
    left: 0;
    right: 0;
    font-size: .32rem;
  }
  div.about-content p{
    font-size: 20px;
  }
  .down {
    top: 45%;
  }
  span.arrow-down {
    width: .2rem;
    height: .2rem;
  }
  .about-article {
    height: 80vh;
    background: #E6E4DC!important;
  }
  .about-article .article-item {
    margin-bottom: 0.82rem;
    font-weight: 400;
  }
  .about-article .article-item .article-title {
    font-size: 0.32rem;
    margin-bottom: 0.19rem;
  }
  .about-article .article-item .article-text {
    font-size: 0.3rem;
    line-height: 0.3rem;
    text-align: justify;
    text-justify:distribute-all-lines; /* 这行必加，兼容ie浏览器*/
    font-weight: 300;
  }
}
@media only screen and (max-width: 980px) and (min-width: 798px) {
  .about-content {
    top: 10%;
    line-height: 1.2;
  }
}