header {
  width: auto;
  min-width: 1200px;
  height: 936px;
  background: url(../img/pc/background.png) no-repeat center;
  background-size: cover;
  position: relative;
}

.seclt-down {
  width: 110px;
  height: 35px;
  background: #fff;
  position: absolute;
  top: 60px;
  left: 0px;
  padding-top: 5px;
  display: none;
  float: left;
}

.seclt-down i {
  display: block;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 7px solid #fff;
  position: absolute;
  top: -7px;
  left: 30px;
}

.seclt-down p {
  padding: 5px 0;
}

.seclt-down a {
  font-size: 14px;
  color: #666666;
  margin-left: 15px;
  cursor: pointer;
}

.seclt-down a:hover {
  color: #e1b355;
}

header .download {
  width: 1200px;
  margin: 0 auto;
  padding-top: 157px;
}

header .download .img {
  width: 120px;
  height: 120px;

  background-image: url(../img/pc/bigLogo.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;

  margin: 0 auto;
}

header .download .title {
  font-size: 60px;
  color: #fff;
  margin: 50px auto;
  text-align: center;
}

header .download .description {
  font-size: 24px;
  color: #b6b6b6;
  margin: 0 auto;
  text-align: center;
}

header .download .btn {
  width: 228px;
  height: 60px;
  margin: 60px auto 0;
  text-align: center;
  display: block;
  background-image: linear-gradient(0deg,
      #f33155 0%,
      #f45942 100%),
    linear-gradient(#161514,
      #161514);
  background-blend-mode: normal,
    normal;
  /* background-image: url(../img/pc/downloadBtn.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover; */
  border-radius: 30px;
  cursor: pointer;
}

header .download .btn:hover {
  background-image: linear-gradient(-90deg,
      #f33155 0%,
      #f45942 100%),
    linear-gradient(#161514,
      #161514);
}

header .download .btn span {
  font-size: 20px;
  color: #fff;
  line-height: 60px;
}

section .functional {
  min-width: 1200px;
  height: 769px;
  background-color: #eeeeee;
  position: relative;
  padding-top: 64px;
}

section .functional>.title {
  font-size: 48px;
  color: #111111;
  text-align: center;
  position: relative;
  z-index: 2;
  font-weight: bold;
}

section .functional .content {
  position: relative;
  width: 1232px;
  height: auto;
  margin: 60px auto 0;
  overflow: hidden;
  z-index: 2;
}

section .functional .content>div {
  position: relative;
  width: 280px;
  height: 240px;
  float: left;
  margin: 14px;
  background-color: black;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
  /* cursor: pointer; */
}

section .functional .content div.bg1 {
  background-image: url(../img/pc/fnc1.png);
}

section .functional .content div.bg2 {
  background-image: url(../img/pc/fnc2.png);
}

section .functional .content div.bg3 {
  background-image: url(../img/pc/fnc3.png);
}

section .functional .content div.bg4 {
  background-image: url(../img/pc/fnc4.png);
}

section .functional .content div.bg5 {
  background-image: url(../img/pc/fnc5.png);
}

section .functional .content div.bg6 {
  background-image: url(../img/pc/fnc6.png);
}

section .functional .content div.bg7 {
  background-image: url(../img/pc/fnc7.png);
}

section .functional .content div.bg8 {
  background-image: url(../img/pc/fnc8.png);
}

section .functional .content>div .bottom {
  position: absolute;
  bottom: 0;
  width: 280px;
  height: 45px;
  background-color: rgba(0, 0, 0, .7);
  text-align: center;
  padding-top: 15px;
}

section .functional .content .bottom>* {
  display: inline-block;
  vertical-align: middle;
}

section .functional .content>div .bottom .icon {
  display: inline-block;
  width: 30px;
  height: 30px;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}

section .functional .content .bottom .title {
  font-size: 20px;
  color: #ffffff;
  margin-left: 15px;
}

.icon1 {
  background-image: url(../img/pc/funcIconhover1.png);
}

.icon2 {
  background-image: url(../img/pc/funcIconhover2.png);
}

.icon3 {
  background-image: url(../img/pc/funcIconhover3.png);
}

.icon4 {
  background-image: url(../img/pc/funcIconhover4.png);
}

.icon5 {
  background-image: url(../img/pc/funcIconhover5.png);
}

.icon6 {
  background-image: url(../img/pc/funcIconhover6.png);
}

.icon7 {
  background-image: url(../img/pc/funcIconhover7.png);
}

.icon8 {
  background-image: url(../img/pc/funcIconhover8.png);
}


section .functional .content>div .cover {
  display: none;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(0, 0, 0, .7);
}

section .functional .content>div .cover .icon {
  width: 40px;
  height: 40px;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
  margin: 40px auto 0;

}

section .functional .content>div .cover .title {
  text-align: center;
  font-size: 20px;
  color: #fff;
  margin-top: 13px;
}

section .functional .content>div .cover .description {
  text-align: center;
  font-size: 14px;
  color: #fff;
  margin-top: 11px;
  line-height: 31px;
  padding: 0px 20px;
}

section .functional .content>div>* {
  display: inline-block;
  vertical-align: middle;
}

section .functional .backgroudImageDot {
  width: 305px;
  height: 310px;
  position: absolute;
  top: 15px;
  left: 50%;
  margin-left: -152.5px;

  background-image: url(../img/pc/funcBackDot.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  z-index: 1;
}

section .functional .backgroudImageLine {
  width: 190px;
  height: 300px;
  position: absolute;
  bottom: 0;
  left: 50%;
  margin-left: -95px;

  background-image: url(../img/pc/funcBackLine.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  z-index: 1;
}



section>.description {
  min-width: 1200px;
  height: 1500px;
  background-color: #000;
  position: relative;
  padding-top: 1px;
}

section>.description .backgroudImageDot {
  width: 305px;
  height: 310px;
  position: absolute;
  top: 693px;
  left: 50%;
  margin-left: -152.5px;

  background-image: url(../img/pc/blackBackDot.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  z-index: 1;
}

section .description .backgroudImageLine1 {
  width: 190px;
  height: 300px;
  position: absolute;
  top: 0;
  left: 50%;
  margin-left: -95px;


  background-image: url(../img/pc/blackBackLine.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  z-index: 1;
}

section .description .backgroudImageLine2 {
  width: 190px;
  height: 300px;
  position: absolute;
  bottom: 0;
  left: 50%;
  margin-left: -95px;


  background-image: url(../img/pc/blackBackLine.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  z-index: 1;
}

section .description .title {
  position: relative;
  text-align: center;
  font-size: 48px;
  color: #ffffff;
  margin-top: 60px;
  z-index: 2;
  line-height: 94px;
  font-weight: bold;
}

section .description .content {
  overflow: hidden;
  width: 1200px;
  padding-top: 120px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

section .description .content>div {
  width: 560px;
  height: 440px;
  background-color: #333333;
  float: left;
  margin-bottom: 80px;
  overflow: visible;
  /* cursor: pointer; */
  border-radius: 10px;
}

section .description .content>div .img {
  width: 90px;
  height: 90px;
  margin: 72px auto;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;

}

section .description .content>div .tag {
  width: 200px;
  height: 60px;
  background-color: rgba(0, 0, 0, .5);
  margin: 0 auto;
  color: #fff;
  text-align: center;
  font-size: 24px;
  line-height: 60px;
  font-weight: bold;
  border-radius: 30px;
}

section .description .content>div .text {
  width: 500px;
  font-size: 14px;
  margin: 0 auto;
  font-size: 14px;
  line-height: 28px;
  color: #999999;
  margin-top: 26px;
}

section .description .content>div:hover .tag {
  color: #f33858;
}

section .description .content>div:hover .text {
  color: #fff;
}



section>.support {
  min-width: 1200px;
  height: 600px;
  background-color: #000000;
  position: relative;
  padding-top: 1px;
  display: none;
}

section>.support .title {
  text-align: center;
  font-size: 48px;
  font-weight: bold;
  color: #ffffff;
  position: relative;
  z-index: 2;
  margin-top: 74px;
}

section>.support .description {
  font-size: 18px;
  color: #666666;
  text-align: center;
  margin-top: 50px;
  line-height: 25px;
}

section>.support>.os {
  overflow: hidden;
  text-align: center;
}

section>.support>.os>* {
  position: relative;
  /* float: left; */
  display: inline-block;
  text-align: center;
  margin: 90px 40px 0;
}

section>.support>.os>*>p {
  color: #fff;
  font-size: 18px;
  color: #cccccc;
  text-align: center;
  margin-top: 25px;
}

.win {
  margin: 0 auto;
  width: 70px;
  height: 70px;
  background-image: url(../img/pc/Windows.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

.mac {
  margin: 0 auto;
  width: 70px;
  height: 70px;
  background-image: url(../img/pc/macOS.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

.ios {
  margin: 0 auto;
  width: 70px;
  height: 70px;
  background-image: url(../img/pc/mac.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}

.android {
  margin: 0 auto;
  width: 70px;
  height: 70px;
  background-image: url(../img/pc/android.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
}


section>.support .backgroudImageDot {
  width: 305px;
  height: 310px;
  position: absolute;
  top: 15px;
  left: 50%;
  margin-left: -152.5px;

  background-image: url(../img/pc/blackBackDot.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  z-index: 1;
}

section>.course {
  width: 100%;
  padding: 100px 0 68px;
  background-color: #fff;
}

section>.course h2 {
  text-align: center;
  font-size: 48px;
  font-weight: bold;
  letter-spacing: 1px;
  color: #111111;
}

section>.course h2 span {
  color: #aaaaaa;
}

section>.course .content,
section>.course .skip {
  width: 1200px;
  margin: 0 auto;
}

section>.course .content {
  padding-top: 60px;
}
section>.course .content .list {
  width: 585px;
  height: 140px;
  background-color: #ffffff;
  border-radius: 10px;
  border: solid 1px #eeeeee;
  margin-bottom: 30px;
  box-sizing: border-box;
  padding: 20px;
  cursor: pointer;
}

section>.course .content .list em {
  width: 100px;
  height: 100px;
  margin-right: 10px;
  border-radius: 8px;
  overflow: hidden;
}

section>.course .content .list img {
  width: 100px;
  height: 100px;
  object-fit: cover;
}

section>.course .content .list .title {
  width: 240px;
  color: #424242;
  font-size: 14px;
}

section>.course .content .list .time {
  font-size: 12px;
  color: #999999;
}

section>.course .content .list .int {
  width: 240px;
  height: 40px;
  font-size: 12px;
  line-height: 20px;
  color: #999999;
  margin-top: 6px;
}

section>.course .content .list .look {
  font-size: 12px;
  color: #999999;
}

section>.course .content .list .look i {
  display: inline-block;
  width: 12px;
  height: 10px;
  margin-right: 5px;
  background: url(../img/icon_read.png);
}

section>.course .content .list .tag {
  display: inline-block;
  max-width: 100px;
  font-size: 12px;
  color: #666666;
  margin-left: 10px;
  position: relative;
  z-index: 2;
}


section>.course .content .list:hover {
  box-shadow: 0px 4px 12px 0px rgba(0, 0, 0, 0.08);
}

section>.course .content .list:hover .title {
  color: #f44a49;
}

section>.course .skip {
  padding-top: 10px;
}

section>.course .skip a {
  width: 120px;
  height: 40px;
  border-radius: 20px;
  border: solid 1px #dddddd;
  color: #424242;
}

section>.course .skip a:hover {
  border: solid 1px #f44a49;
  background-color: #fff5f4;
  color: #f44a49;
}

section>.voice {
  width: 100%;
  height: 788px;
  background: url(../img/bg.png) no-repeat center;
}

section>.voice h2 {
  font-size: 48px;
  font-weight: bold;
  text-align: center;
  color: #ffffff;
  padding: 100px 0 125px;
}

section>.voice .content {
  width: 1200px;
  position: relative;
  margin: 0 auto;
}

section>.voice .content .list {
  width: 220px;
  height: 300px;
  background-color: #23221f;
  border-radius: 10px;
  position: relative;
  padding: 87px 16px 0;
  box-sizing: border-box;
}

section>.voice .content .list img {
  width: 128px;
  height: 128px;
  position: absolute;
  top: -64px;
  left: 50%;
  margin-left: -64px;
}

section>.voice .content .list .name {
  font-size: 16px;
  font-weight: bold;
  letter-spacing: 1px;
  color: #ffffff;
  text-align: center;
  margin-bottom: 18px;
}

section>.voice .content .list .int {
  font-size: 12px;
  line-height: 23px;
  color: #999999;
  text-align: justify;
}

section>.voice .content .list:nth-child(2n) {
  top: 50px;
}

section>.voice .content .list:nth-child(3n) {
  top: 100px;
}

.double11 {
  position: fixed;
  z-index: 666;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.closeAD {
  position: absolute;
  right: 44px;
  top: -40px;
  width: 40px;
  height: 40px;
}

.img_1 {
  background-image: url(../img/public/description_1.png);
}

.img_2 {
  background-image: url(../img/public/description_2.png);
}

.img_3 {
  background-image: url(../img/public/description_3.png);
}

.img_4 {
  background-image: url(../img/public/description_4.png);
}
.links ul{
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: start;
      -ms-flex-align: start;
          align-items: flex-start;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  font-size: 0;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
      justify-content: center;
}
.links ul li{
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  position: relative;
  font-size: 0;
}
.links ul li a{
  font-size: 13px;
  color: #999999;
  margin: 0 8px 1px;
}
.links ul li a:hover{
  color: #d5d5d5;
}
.links ul li::after {
  content: "";
  height: 13px;
  width: 1px;
  background: #5f6172;
  position: absolute;
  right: 0;
  top: 4px;
}
.links ul li:last-child::after{
  width: 0;
  height: 0;
}