* {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}
body,
h1,
h2,
h3,
h4,
h5,
h6,
hr,
p,
blockquote,
dl,
dt,
dd,
ul,
ol,
li,
pre,
fieldset,
lengend,
button,
input,
textarea,
th,
td {
  margin: 0;
  padding: 0;
}
input,
textarea {
  border: 0 none;
  -webkit-box-shadow: none;
          box-shadow: none;
  outline: none;
}
:focus,
a:focus,
img:focus {
  outline: -webkit-focus-ring-color auto 0;
}
body,
button,
input,
select,
textarea {
  font: 12px/1.5 "Microsoft Yahei", sans-serif;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Microsoft Yahei";
}
h1 {
  font-size: 18px;
}
h2 {
  font-size: 16px;
}
h3 {
  font-size: 14px;
}
h4,
h5,
h6 {
  font-size: 100%;
}
address,
cite,
dfn,
em,
i,
var {
  font-style: normal;
}
ul,
ol {
  list-style: none;
}
a,
a:hover,
a:focus {
  text-decoration: none;
  outline: none;
}
legend {
  color: #000;
}
fieldset,
img {
  border: none;
}
button,
input,
select,
textarea {
  font-size: 100%;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}
.container-fluid {
  position: relative;
  width: 100%;
  max-width: 1920px;
  min-width: 1198px;
  margin: 0 auto;
  overflow-x: hidden;
}
.container {
  position: relative;
  width: 1198px;
  margin: 0 auto;
}
.load-done .nav-wrapper .nav-list .slide {
  opacity: 1;
  -webkit-transition: all .3s;
  transition: all .3s;
}
@supports ((position: -webkit-sticky) or (position: sticky)) {
  .nav-wrapper {
    position: -webkit-sticky !important;
    position: sticky !important;
    left: 0 !important;
    -webkit-transform: translateX(0) !important;
            transform: translateX(0) !important;
    margin-bottom: -79px;
  }
}
.nav-wrapper {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 9;
  width: 100%;
  min-width: 1198px;
  padding: 20px 0;
  color: #fff;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
}
.nav-wrapper .container {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.nav-wrapper a {
  color: #fff;
}
.nav-wrapper .logo {
  width: 143px;
  height: 30px;
  background-image: url(./logo-1.png);
  background-size: 100% 100%;
}
.nav-wrapper .nav-list {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}
.nav-wrapper .nav-list .item {
  position: relative;
  height: 31px;
  line-height: 31px;
  margin: 0 15px;
}
.nav-wrapper .nav-list .slide {
  position: absolute;
  left: 15px;
  top: 100%;
  width: 37px;
  height: 2px;
  background-color: #fff;
  opacity: 0;
}
.nav-wrapper .btn-group {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  border: 1px solid #fff;
  border-radius: 5px;
  overflow: hidden;
}
.nav-wrapper .btn-group .btn {
  height: 31px;
  line-height: 31px;
  -webkit-transition: all .3s;
  transition: all .3s;
}
.nav-wrapper .btn-group .btn:hover {
  background-color: rgba(42, 63, 81, 0.5);
}
.nav-wrapper .btn-group .btn a {
  display: block;
  padding: 0 20px;
}
.header {
  position: relative;
  width: 100%;
  min-width: 1198px;
  height: 582px;
  color: #fff;
  background: url(./banner-1.png) center center;
  background-size: cover;
}
.header .container {
  height: 100%;
}
.header .title-group {
  position: absolute;
  top: 50%;
  left: 0;
  -webkit-transform: translateY(-40%);
          transform: translateY(-40%);
}
.header .title {
  font-size: 50px;
}
.header .sub-title {
  margin-top: 10px;
  font-size: 30px;
}
.main {
  height: 1670px;
  background: url(./bg-1.png) center center;
  background-size: cover;
}
.main .main-section-1 {
  padding: 124px 0 144px;
  color: #fff;
}
.main .main-section-1 .container {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: end;
      -ms-flex-pack: end;
          justify-content: flex-end;
  padding: 0;
}
.main .main-section-1 .pic {
  position: absolute;
  left: 0;
  top: 50%;
  z-index: 1;
  width: 587px;
  height: 313px;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
}
.main .main-section-1 .pic img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  -o-object-position: center;
     object-position: center;
}
.main .main-section-1 .info {
  position: relative;
  width: 73%;
  height: 469px;
  padding: 70px 40px 0 327px;
  background-image: url(./img-2.png);
  background-size: 100% 100%;
}
.main .main-section-1 .info .title-group {
  margin-bottom: 15px;
}
.main .main-section-1 .info .title-group .title {
  font-size: 59px;
}
.main .main-section-1 .info .title-group .sub-title {
  font-size: 34px;
}
.main .main-section-1 .info .desc {
  font-size: 20px;
}
.main .main-section-2 .title-group {
  margin-bottom: 10px;
  text-align: center;
}
.main .main-section-2 .title-group .title {
  font-size: 59px;
  color: #000;
}
.main .main-section-2 .title-group .sub-title {
  font-size: 30px;
  color: #000;
}
.main .main-section-2 .item-list {
  overflow: hidden;
  margin: 0 -1%;
}
.main .main-section-2 .item-list .item {
  position: relative;
  float: left;
  width: 48%;
  margin: 1%;
  background-color: #172027;
}
.main .main-section-2 .item-list .item .item-pic {
  width: 100%;
  height: 100%;
  opacity: .5;
}
.main .main-section-2 .item-list .item .item-pic img {
  display: block;
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  -o-object-position: center;
     object-position: center;
}
.main .main-section-2 .item-list .item .item-name {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  font-size: 30px;
  color: #fff;
}
.advertisers {
  height: 739px;
  color: #fff;
  background: url(./bg-2.png) center center;
  background-size: 100% 100%;
}
.advertisers .title-group {
  padding: 77px 0;
  text-align: center;
}
.advertisers .title-group .title {
  font-size: 59px;
}
.advertisers .title-group .sub-title {
  font-size: 30px;
}
.advertisers .item-list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.advertisers .item-list .item {
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
}
.advertisers .item-list .item .item-icon {
  width: 178px;
  height: 178px;
  margin: 0 auto;
}
.advertisers .item-list .item .item-icon img {
  display: block;
  width: 100%;
  height: 100%;
}
.advertisers .item-list .item .item-text {
  margin-top: 46px;
  font-size: 24px;
  text-align: center;
}
.footer {
  padding: 5% 0;
  color: #fff;
  background-color: #000;
}
.footer a {
  color: #fff;
}
.footer .title {
  font-size: 16px;
  margin-bottom: 10px;
}
.footer .footer-section-1 {
  margin-bottom: 40px;
}
.footer .footer-section-1 .follow-list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}
.footer .footer-section-1 .follow-list .item {
  margin-right: 20px;
}
.footer .footer-section-2 {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  line-height: 2;
}
.footer .footer-section-2 dl dd {
  font-size: 12px;
}