html,
body {
  height: 100%;
}
@media (min-width: 1600px) {
  .container {
    max-width: 1600px;
  }
}
header.header-index {
  position: fixed;
  background-color: transparent;
}
header.header-index .header-nav {
  height: 126px;
  padding-left: 20px;
  padding-right: 20px;
}
header.header-index .logo {
  width: 210px;
  height: 54px;
}

header.header-index nav .menu-item > a {
  color: #fff;
  border-right: 2px solid #fff;
  padding: 0px 45px;
}
header nav .menu-item:last-child > a {
  padding-right: 0;
  border: none;
}
header.header-index nav .menu-item .menu-xl {
  top: 76px;
}
.index-section {
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.index-section .section {
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}
.index-section .section video {
  width: 100%;
}
.index-section .section1 {
  background-image: url(../images/banner_01.jpg);
}
.index-section .section2 {
  background-image: url(../images/banner_02.jpg);
}
.index-section .section3 {
  background-image: url(../images/banner_03.jpg);
}
.index-section .section4 {
  background-image: url(../images/banner_04.jpg);
}
.index-section .section5 {
  background-image: url(../images/banner_05.jpg);
  background-position-y: bottom;
  background-size: auto;
}
.index-section .swiper-pagination {
  right: 30px;
}
.index-section .swiper-pagination .swiper-pagination-bullet {
  width: 12px;
  height: 12px;
  background-color: #fff;
  opacity: 1;
  margin: 10px auto;
}
.index-section .swiper-pagination .swiper-pagination-bullet-active {
  background-color: transparent;
  border: 2px solid #fff;
  width: 16px;
  height: 16px;
}
.index-section .section .sec-content {
  position: absolute;
  top: 30%;
  width: 100%;
  text-align: center;
  color: #fff;
}
.index-section .section .sec-content h3 {
  font-size: 50px;
}
.index-section .section .sec-content .sec-txt {
  margin: 36px auto 66px;
  width: 660px;
}

.index-section .section .sec-content .sec-txt > p {
  line-height: 28px;
  font-size: 14px;
}
.index-section .section .sec-content .sec-btn a {
  background-color: #063989;
  color: #fff;
  width: 120px;
  height: 35px;
  line-height: 35px;
  margin-right: 40px;
  border-radius: 5px;
  display: inline-block;
  transition: all 0.3s;
  font-size: 16px;
}
.index-section .section .sec-content .sec-btn a:last-child {
  margin: 0;
}
.index-section .section .sec-content .sec-btn a:hover {
  background-color: #fff;
  color: #063989;
  font-weight: 700;
}
.index-section .section .sec-xl {
  position: absolute;
  bottom: 58px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 16px;
  color: #fff;
  cursor: pointer;
  text-align: center;
}
.index-section .section .sec-xl span {
  background: url(../images/1-2.png) no-repeat center;
  width: 30px;
  height: 48px;
  border-radius: 15px;
  display: inline-block;
  border: 2px solid #fff;
  margin-top: 13px;
}
.index-section .section2 .sec-content .sec-txt,
.index-section .section3 .sec-content .sec-txt {
  margin-top: 40px;
  margin-bottom: 106px;
}
.index-section .section4 .sec-content .sec-txt {
  margin-top: 95px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  width: 580px;
}
.index-section .section4 .sec-content .sec-txt > div {
  width: 270px;
  height: 88px;
  border: 1px solid #fff;
  padding: 24px 0px 0px 100px;
  margin-bottom: 26px;
  text-align: left;
  cursor: pointer;
  transition: all 0.3s;
  background-repeat: no-repeat;
  background-position: 35px center;
  font-size: 14px;
}
.index-section .section4 .sec-content .sec-txt > div:nth-child(1) {
  background-image: url(../images/1-7.png);
}
.index-section .section4 .sec-content .sec-txt > div:nth-child(2) {
  background-image: url(../images/1-8.png);
}
.index-section .section4 .sec-content .sec-txt > div:nth-child(3) {
  background-image: url(../images/1-9.png);
}
.index-section .section4 .sec-content .sec-txt > div:nth-child(4) {
  background-image: url(../images/1-10.png);
}
.index-section .section4 .sec-content .sec-txt h4 {
  margin-bottom: 6px;
  font-size: 16px;
}

.index-section .section4 .sec-content .sec-txt > div:hover {
  background-color: #063989;
  border-color: #063989;
}
.index-section .section5 .sec-content {
  color: #222;
  top: 20%;
}
.index-section .section5 .sec-content .sec-txt {
  margin-bottom: 45px;
}
.index-section .section5 .sec-content .sec-hezuo {
  width: 1080px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin: 0 auto;
  margin-bottom: 35px;
}
.index-section .section5 .sec-xl {
  color: #222;
}
.index-section .section5 .sec-xl span {
  border-color: #222;
  background-image: url(../images/1-25.png);
}
.footer .container {
  padding-top: 180px;
  padding-bottom: 0px;
}
.footer .foot-bottom {
  position: absolute;
  bottom: 0;
}
.footer .foot-left::after,
.footer .foot-center::after {
  top: 208px;
}
@media (max-width: 1599px) {
  .index-section .section .sec-content h3 {
    font-size: 40px;
  }
  .index-section .section4 .sec-content .sec-txt {
    margin-top: 60px;
  }
  .index-section .section5 .sec-content .sec-txt {
    margin: 20px auto 30px;
  }
  .index-section .section5 .sec-content .sec-hezuo {
    margin-bottom: 20px;
  }
}
@media (max-width: 1199px) {
  .index-section .section5 .sec-content .sec-hezuo {
    width: 960px;
  }
  .xika {
    display: none;
  }
  header.header-index nav .menu-item > a {
    padding: 0 35px;
  }
  header nav .menu-item:last-child > a {
    padding-right: 0;
  }
}
@media (max-width: 991px) {
  .m-btn span,
  .m-btn span::before,
  .m-btn span::after {
    background-color: #fff;
  }
  header.header-index nav {
    top: 0;
    right: -100%;
    left: auto;
    width: 200px;
    display: block;
    padding-top: 50px;
  }
  header.header-index nav i {
    display: block;
    position: absolute;
    width: 30px;
    height: 30px;
    background: url(../images/close.png) no-repeat center;
    top: 10px;
    left: 10px;
  }
  header.header-index nav .menu-item > a {
    color: #222;
  }
  .index-section .section5 .sec-content .sec-hezuo {
    width: 740px;
  }
  .index-section .section .sec-content h3 {
    font-size: 36px;
  }
  .index-section .section5 .sec-content {
    top: 10%;
  }
  .zhongtie,
  .shanshui,
  .footer .foot-center,
  .footer .foot-left::after,
  .footer .foot-center::after {
    display: none;
  }
}
@media (max-width: 767px) {
  .index-section .section .sec-content h3 {
    font-size: 30px;
  }
  .index-section .section .sec-content .sec-txt {
    width: 390px;
    margin-left: auto;
    margin-right: auto;
  }
  .index-section .swiper-pagination {
    display: none;
  }
  .index-section .section4 .sec-content .sec-txt {
    width: 90%;
  }
  .index-section .section4 .sec-content .sec-txt > div {
    width: 250px;
  }
  .index-section .section5 .sec-content .sec-hezuo {
    display: none;
  }
  .index-section .section5 .sec-content {
    top: 38%;
  }
  .index-section .section5 .sec-content .sec-txt {
    width: 310px;
  }
  .index-section .section2 .sec-content .sec-txt,
  .index-section .section3 .sec-content .sec-txt {
    margin-bottom: 80px;
  }
}
@media (max-width: 575px) {
  .index-section .section .sec-content h3 {
    font-size: 26px;
    line-height: 38px;
    width: 300px;
    margin: 0 auto;
  }
  .index-section .section .sec-content {
    top: 24%;
  }
  .index-section .section .sec-content .sec-txt {
    width: 240px;
    margin-bottom: 52px;
  }
  .index-section .section .sec-content .sec-btn a {
    margin-right: 10px;
    width: 100px;
  }
  .index-section .section4 .sec-content .sec-txt {
    width: 97%;
  }
  .index-section .section4 .sec-content .sec-txt > div {
    padding-left: 50px;
    background-position-x: 5px;
    width: 176px;
  }
  .footer .container {
    padding-top: 100px;
  }
  .footer .foot-left h3 {
    margin-bottom: 20px;
  }
  .footer .foot-left img {
    margin-top: 16px;
  }
}