* {
  margin: 0;
  padding: 0;
  text-decoration: none;
  list-style: none;
}
::-webkit-scrollbar {
  width: 1px;
  height: 1px;
  background-color: rgba(0, 0, 0, 0);
}
::-webkit-scrollbar-track {
  background-color: rgba(0, 0, 0, 0);
}
::-webkit-scrollbar-thumb {
  background-color: rgba(0, 0, 0, 0);
}
@media (min-width: 900px) {
  .body {
    scroll-snap-type: y mandatory;
    height: 100vh;
    overflow-y: auto;
  }
  .screen {
    scroll-snap-align: start;
  }
}
.header {
  width: 100%;
  height: 90px;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 99;
  font-size: 16px;
  transition: all 0.5s;
}
.header.down {
  background: rgba(255, 255, 255, 0.9);
  height: 80px;
}
.header.down .logo a {
  background-image: url(/static/images/logo.png);
}
.header.down .nav * {
  color: #666666;
}
.header.down .nav a:hover {
  color: #343433;
}
.header.down .nav .phone {
  background-image: url(/static/images/icon-tep-b.png);
}
.header .box {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  height: 100%;
  margin: 0 auto;
  max-width: 2260px;
}
.header .logo {
  position: absolute;
  top: 0;
  /*left: 10px;*/
  left: 10px;
  height: 100%;
  width: 200px;
  display: flex;
  align-items: center;
}
.header .logo a {
  width: 100%;
  height: 100%;
  background: url(/static/images/logo-w.png) no-repeat 0 50%;
  background-size: contain;
}
.header .nav {
  text-align: right;
  width: 100%;
  color: #fff;
}
.header .nav * {
  margin-right: 10px;
  color: #fff;
  cursor: pointer;
}
.header .nav *:hover {
  color: #bebebe;
}
.header .phone {
  font-size: 20px;
  background: url(/static/images/icon-tep-w.png) no-repeat 0 50%;
  background-size: 20px;
  padding-left: 30px;
}
.header .phone:hover {
  background-image: url(/static/images/icon-tep-g.png);
}
.screen-01 {
  height: 100vh;
  position: relative;
  overflow: hidden;
}
.screen-01 .bg {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}
.screen-01 .bg video {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
}
.screen-01 .bg .mask {
  background: radial-gradient(circle, rgba(0, 0, 0, 0.01), rgba(0, 0, 0, 0.9));
  position: absolute;
  left: 0px;
  top: 0px;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
}
.screen-01 .video-line {
  position: absolute;
  bottom: 51.9%;
  left: 0;
  width: 87.5%;
}
.screen-01 .video-line span {
  display: block;
  height: 0.72vw;
  max-height: 14px;
  margin-top: 1vw;
  background-color: #ffffff;
  transform-origin: left top;
  animation: o-a 2.1s ease infinite;
}
.screen-01 .video-line span:nth-of-type(1) {
  opacity: 1;
  margin-top: 0;
  width: 100%;
  animation-delay: 0.3s;
  /*background-color: #15346B;*/
  background-color: #FFFFFF;
}
.screen-01 .video-line span:nth-of-type(2) {
  opacity: 1;
  width: 89.8%;
  animation-delay: 0.9s;
  background-color: blue;
  /*background-color: #FFFFFF;*/
}
.screen-01 .video-line span:nth-of-type(3) {
  opacity: 0.6;
  width: 85%;
  animation-delay: 1.2s;
  background-color: #FFFFFF;
}
.screen-01 .video-line span:nth-of-type(4) {
  /*opacity: 0.4;*/
  opacity: 1;
  width: 94%;
  animation-delay: 0.6s;
  background-color: red;
}
.screen-01 .video-line span:nth-of-type(5) {
  opacity: 0.2;
  width: 83%;
  animation-delay: 1.5s;
  background-color: #FFFFFF;
}
.screen-01 .video-line span:nth-of-type(6) {
  opacity: 0.1;
  /*width: 92.8%;*/
  width: 80.8%;
  animation-delay: 0.9s;
  background-color: #FFFFFF;
}
.screen-01 .video-line span:nth-of-type(7) {
  opacity: 0.1;
  width: 86%;
  animation-delay: 0.9s;
  background-color: #FFFFFF;
}
@keyframes o-a {
  0%,
  100% {
    transform: scaleX(0.95);
  }
  50% {
    transform: scaleX(1);
  }
}
.screen-01 .text-line {
  position: absolute;
  top: 50%;
  width: 100%;
  text-align: center;
  color: #fff;
  font-size: 4.5vw;
  box-sizing: border-box;
  padding: 0 1em;
}

.screen-02 {
  height: 100vh;
  width: 100%;
}
.screen-02 ul {
  overflow: hidden;
}
.screen-02 li {
  width: 25%;
  height: 33.3vh;
  float: left;
}
.screen-02 li a {
  display: block;
  width: 100%;
  height: 100%;
  position: relative;
}
.screen-02 .bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-position: 50% 50%;
  background-repeat: no-repeat;
  background-size: cover;
}
.screen-02 .txt {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-flow: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: #0f85e0;
  opacity: 0;
  transition: opacity 0.3s;
}
.screen-02 .txt span {
  display: block;
  font-size: 24px;
}
.screen-02 a:hover .txt {
  opacity: 0.9;
}
.screen-03 {
  width: 100%;
  height: 100vh;
  display: flex;
}
.screen-03 .half {
  width: 50%;
}
.screen-03 .top {
  width: 100%;
  height: 62%;
}
.screen-03 .bottom {
  width: 100%;
  height: 38%;
}
.screen-03 .show {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
}
.screen-03 .show .bg {
  height: 100%;
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  background-repeat: no-repeat;
  background-position: 50% 50%;
  background-size: cover;
}
.screen-03 .show video {
  height: 100%;
  width: 100%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
}

.screen-03 .show .txt {
  height: 100%;
  width: 60%;
  position: absolute;
  top: 0;
  left: 20%;
  color: #ffffff;
  display: flex;
  justify-content: center;
  flex-flow: column;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.screen-03 .show .txt h5 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}
.screen-03 .show .txt p {
  font-size: 1rem;
  margin-bottom: 1.5rem;
}
.screen-03 .show .txt a {
  border: 3px solid #fff;
  color: #fff;
  height: 42px;
  line-height: 42px;
  padding: 0 50px;
  width: fit-content;
  transition: all 0.3s;
}
.screen-03 .show .txt a:hover {
  color: #000;
  background: #fff;
}
.screen-03 .show .mask {
  height: 200%;
  width: 0;
  position: absolute;
  top: -50%;
  left: -50%;
  background: #0c68b3;
  opacity: 0.6;
  transition: all 0.3s cubic-bezier(0.4, 0, 1, 1);
  transform: rotate(25deg);
}
.screen-03 .show:hover .txt {
  opacity: 1;
}
.screen-03 .show:hover .mask {
  width: 200%;
  opacity: 0.9;
}
.screen-04 {
  height: 100vh;
  overflow: hidden;
  position: relative;
}
.screen-04 .background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.screen-04 ul {
  overflow: hidden;
}
.screen-04 li {
  background: #13346b;
  height: 100vh;
  width: 33.33%;
  float: left;
}
.screen-04 .green {
  background-color: #c22527;
}
.screen-04 li .box {
  position: relative;
  margin: 0 auto;
  width: 50%;
  color: #fff;
  height: 100%;
  overflow: hidden;
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  flex-flow: column;
}
.screen-04 .icon {
  height: 86px;
  background-repeat: no-repeat;
  background-size: contain;
  background-position: 0 0;
  margin-bottom: 20px;
}
.screen-04 .txt-1 {
  font-size: 14px;
  /*color: #0f2647;*/
  color: #ffffff;
  font-weight: bold;
}
.screen-04 .txt-2 {
  font-size: 34px;
  margin: 10px 0 20px;
}
.screen-04 .txt-2::after {
  content: "";
  display: block;
  height: 1px;
  width: 50%;
  margin-top: 22px;
  /*background: #10c28a;*/
  background: #f01509;
}
.screen-04 .green .txt-2::after {
  background: #4877d2;
}
.screen-04 .txt-3 {
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 20px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.5s ease;
}
.screen-04 li .box:hover .txt-3 {
  max-height: 500px;
}
.screen-04 .more {
  font-size: 20px;
  display: block;
  border: 3px solid #fff;
  padding: 10px 40px;
  color: #fff;
  width: fit-content;
  transition: all 0.3s;
}
.screen-04 .more:hover {
  color: #000;
  background: #fff;
}
.screen-05 {
  overflow: hidden;
}
.screen-05 .half {
  width: 50%;
  float: left;
  display: flex;
  align-content: center;
  justify-content: center;
  background-color: #fff;
  cursor: pointer;
}
.screen-05 .half:hover {
  background-color: #f9f9f9;
}
.screen-05 .show {
  padding: 60px 0 40px;
  display: flex;
}
.screen-05 .show .icon {
  width: 130px;
  height: 130px;
  background-repeat: no-repeat;
  background-position: 0 50%;
  background-size: contain;
}
.screen-05 .show .left {
  margin-right: 30px;
}
.screen-05 .show .right {
  min-height: 130px;
  display: flex;
  flex-flow: column;
  justify-content: center;
}
.screen-05 .show .txt-1 {
  color: #2477ba;
  font-size: 26px;
  margin-bottom: 10px;
}
.screen-05 .show .txt-2 {
  color: #000;
  font-size: 18px;
}
.footer {
  padding: 1.66vw;
  background-color: #101a2b;
  color: #85878c;
  font-size: 12px;
}
.footer a {
  color: #85878c;
  transition: color 0.5s ease;
}
.footer a:hover {
  color: #fff;
}
.footer .nav {
  display: flex;
  justify-content: space-between;
}
.footer .nav a {
  margin-right: 20px;
}
.footer .nav .phone {
  font-size: 26px;
  background: url(/static/images/icon-tep.png) no-repeat 0 50%;
  background-size: 20px;
  padding-left: 30px;
}
.footer .nav .phone-m {
  display: none;
}
.footer .line {
  height: 1px;
  background-color: #1e293a;
  margin: 34px 0;
}
.footer .links {
  display: flex;
  justify-content: space-between;
}
.footer .links .beian {
  padding-left: 20px;
  background: url(/static/images/icon-footer.png) no-repeat 0 50%;
  background-size: contain;
}