/* css reset */
body,h1,h2,h3,h4,h5,h6,p,blockquote,
dl,dt,dd,ul,ol,li,
pre,code,
form,fieldset,legend,button,input,textarea,
th,td{margin:0;padding:0;}
body,button,input,select,textarea{font:12px/1.5 Tahoma, Arial, "SimSun"; font-family: "Microsoft YaHei"}
input,select,button,textarea{font-size:100%;}
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}
ol,ul{list-style:none;}
em,i,strong{font-style:normal;font-weight:normal;}
fieldset,img{border:0;}
table{border-collapse:collapse;border-spacing:0;}
html,body{width:100%;height:100%;}
a{text-decoration:none;}
a:hover{text-decoration:none;}
.clear{clear: both;}
.clearfix:after{content:"\200B";display:block;height:0;clear:both;}
.clearfix{*zoom:1;}
.left{float: left;}
.right{float: right;}

.btn {
  display: block;
  width: 273px;
  height: 78px;
  line-height: 78px;
  background: #3F84F6;
  border-radius: 2px;
  color: #FFFFFF;
  font-size: 30px;
}
.btn img {
  margin: 21px 12px 0 56px;
}
.btn:hover {
  background-color: #4fa2ff;
}
.btn:active {
  background-color: #2163dd;
}

.header {
  width: 100%;
  height: 575px;
  background: url('../images/bg.png') no-repeat top center;
}
.header .top {
  width: 1167px;
  height: 38px;
  margin: 0 auto;
  padding-top: 24px;
}
.header .logo img{
  height: 38px;
}
.header .top .duba-logo {
  margin-top: 9px;
}
.banner {
  width: 1167px;
  margin: 0 auto;
  margin-top: 56px;
  color: #3D4756;
}
.banner-box {
  margin-left: 49px;
}
.banner .title {
  height: 48px;
  margin-bottom: 30px;
}
.banner h1{
  font-size: 32px;
  font-weight: 700;
  margin-left: 10px;
}
.banner .version {
  font-size: 16px;
  margin-bottom: 19px;
}

.banner .safequestion {
  width: 100%;
  height: 29px;
}
.banner .question {
  text-decoration: underline;
  color: #666;
  margin: 5px 0 0 10px;
}

.banner .btn {
  margin: 57px 0 14px 0;
}
.banner .tip {
  font-size: 16px;
}
.main {
  width: 1019px;
  margin: 0 auto;
}
.img-list {
  width: 1019px;
  height: 280px;
  margin: 43px auto 66px;
}
.img-list li {
  float: left;
}
.img-list li img{
  width: 463px;
  height: 280px;
}
.main .desc {
  width: 972px;
  min-height: 100px;
  margin: 0 auto 100px;
  line-height: 36px;
  font-size: 18px;
  color: #3D4756;
} 
.downType{
  height: 124px;
  text-align: center;
  margin-bottom: 60px;
  display: none;
}
.common-btn {
  width: 273px;
  height: 120px;
  margin: 0 200px 0 96px;
}
.common.btn {
  width: 269px;
  height: 74px;
  line-height: 74px;
  color: #3F84F6;
  background: #fff;
  border: 2px solid #3F84F6;
  cursor: pointer;
}
.common.btn img {
  margin: 19px 10px 0 48px;
}
.downType .common:hover {
  background-color: #d8f5ff;
}
.downType .common:active {
  background-color: #cce2ff;
}
.downType .tip {
  line-height: 36px;
  color: #3F84F6;
  font-size: 18px;
  margin-top: 10px;
}
.downType .safeType .safe, .downType .safeType .checkTypeownload {
  margin-left: 64px;
}
.fix {
  width: 100%;
  height: 50px;
  position: fixed;
  bottom: 0;
  padding: 20px 0;
  border-top: 1px solid #e4e4e4;
  background-color: #fff;
  z-index: 100;
}
.fix .fix-box {
  width: 1019px;
  margin: 0 auto;
}
.product-logo {
  margin-top: 1px;
}
.product-logo img {
  width: 48px;
  height: 48px;
}
.product-logo i {
  font-size: 24px;
  color: #4c4c4c;
  line-height: 48px;
  margin-left: 5px;
}
.fix .at-once {
  display: block;
  width: 181px;
  height: 50px;
  border-radius: 25px;
  color: #fff;
  background-color: #3f84f6;
}
.fix .at-once:hover {
  background-color: #4fa2ff;
}
.fix .at-once:active {
  background-color: #2163dd;
}
.fix .at-once img {
  margin: 14px 10px 0 30px;
}
.fix .at-once i {
  font-size: 20px;
  line-height: 50px;
}
.footer {
  width: 100%;
  height: 60px;
  line-height: 30px;
  text-align: center;
  padding-bottom: 130px;
  font-size: 14px;
  color: #999;
}

.alert-box{
  display: none;
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0px;
  left: 0px;
  text-align: center;
  background-color: rgba(0,0,0,0.3);
}
.alert-wrapper{
  width: 460px;
  height: 249px;
  margin: 0 auto;
  top: 50%;
  margin-top: -115px;
  position: relative;
  background-color: #fff;
  border-radius: 6px;
  z-index: 100;
  box-shadow: 1px 2px 3px #C7C6C6;
  color: #3d3d3d;
  font-size: 20px;
}
.alertTop{
  width: 100%;
  height: 56px;
  border-bottom: 1px solid #eee;
  font-size: 22px;
}
.alertTop .topTitle{
  float: left;
  padding-left: 20px;
  line-height: 60px;
}
.alertTop .topClose{
  float: right;
  padding: 10px 20px;
  font-size: 26px;
  cursor: pointer;
}
.alertTop .topClose:hover{
  color:#3F84F6;
}
.alertMain{
  padding-top: 15px;
}
.alertMain .title{
  text-align: left;
  padding-left: 25px;
  line-height: 28px;
}
.alertMain .little{
  font-size: 16px;
  text-align: left;
  color: #e9827d;
}
.alertMain .alert-btn a{
  width: 194px;
  height: 40px;
  line-height: 40px;
  border: 1px solid #eee;
  margin: 20px 0 0 23px;
  float: left;
}
.alertMain .alert-btn a:hover{
  background-color: #3F84F6;
  text-decoration: none;
  color: #fff;
  border:1px solid #fff;
}
.alertMain .alert-btn .safeBtn{
  color: #0078fa;
  border:1px solid #0078fa;
}

.banner-img {
  width: 615px;
  height: 355px;
}
.checkbtn{
  cursor: pointer;
  display: none;
}
.check-alert {
  display: none;
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0px;
  left: 0px;
  text-align: center;
  background-color: rgba(0,0,0,0.3);
  z-index: 100;
}
.check-alert .check-wrapper {
  width: 440px;
  height: 200px;
  margin: 0 auto;
  top: 50%;
  margin-top: -100px;
  position: relative;
  background: url('../images/check_bg.png') no-repeat;
}
.check-alert .check-close{
  position: absolute;
  width: 30px;
  height: 30px;
  right: 10px;
  top: 10px;
  background: url('../images/check_close.png') no-repeat;
  background-position: 0 0;
  cursor: pointer;
}
.check-alert .check-close:hover{
  background-position: -30px 0;
}
.check-alert .check-close:active{
  background-position: -60px 0;
}
.check-alert .check-btn{
  position: absolute;
  width: 200px;
  height: 40px;
  left: 120px;
  bottom: 24px;
  background: url('../images/check_btn.png') no-repeat;
  background-position: 0 0;
}
.check-alert .check-btn:hover{
  background-position: -200px 0;
}
.check-alert .check-btn:active{
  background-position: -400px 0;
}

.fix .checkBottomBtn {
  cursor: pointer;
  display: none;
}

.downType .checkTypeownload {
  cursor: pointer;
  display: none;
}

.tips {
  position: fixed;
  width: 301px;
  height: 227px;
  bottom: 120px;
  right: 113px;
  display: none;
}
.tips .close {
  position: absolute;
  top: 5px;
  right: 10px;
  width: 20px;
  height: 20px;
  color: #666;
  font-size: 20px;
  line-height: 20px;
  text-align: center;
  cursor: pointer;
}
.tips img {
  width: 301px;
  height: 227px;
}

.banner .btn {
  position: relative;
  width: 300px;
  height: 86px;
  line-height: 86px;
  background-color: #3D86FF;
}
.btn__icon {
  position: absolute;
  left: 61px;
  top: 21px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center
}
.btn__icon::before {
  content: '';
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  transform: scale3d(0.9, 0.9, 1);
  transition: box-shadow 0.3s, transform 0.3s;
  box-shadow: inset 0 0 0 3px #fff
}
.banner .btn:hover .btn__icon::before {
  box-shadow: inset 0 0 0 35px #fff;
  transform: scale3d(1, 1, 1)
}
.banner .btn .btn__icon svg .st0 {
  transition: fill 0.3s
}
.banner .btn:hover .btn__icon svg .st0 {
  fill: #4FA2FF
}
.banner .btn:hover {
  text-decoration: none;
  background-color: #4FA2FF
}
.banner .btn:active .btn__icon svg .st0 {
  fill: #2163DD
}
.banner .btn:active {
  text-decoration: none;
  background-color: #2163DD
}
.banner .btn .btn_text {
  position: relative;
  padding: 0 0 0 115px;
}