html {
    font-size: 50px;
  }
  @media screen and (min-width: 320px) {
    html {
      font-size: 21.33333333px;
    }
  }
  @media screen and (min-width: 360px) {
    html {
      font-size: 24px;
    }
  }
  @media screen and (min-width: 375px) {
    html {
      font-size: 25px;
    }
  }
  @media screen and (min-width: 384px) {
    html {
      font-size: 25.6px;
    }
  }
  @media screen and (min-width: 400px) {
    html {
      font-size: 26.66666667px;
    }
  }
  @media screen and (min-width: 414px) {
    html {
      font-size: 27.6px;
    }
  }
  @media screen and (min-width: 424px) {
    html {
      font-size: 28.26666667px;
    }
  }
  @media screen and (min-width: 480px) {
    html {
      font-size: 32px;
    }
  }
  @media screen and (min-width: 540px) {
    html {
      font-size: 36px;
    }
  }
  @media screen and (min-width: 720px) {
    html {
      font-size: 48px;
    }
  }
  @media screen and (min-width: 1200px) {
    html {
      font-size: 50px;
    }

  }




*,h1,h2,h3,h4,h5,h6,p {
  margin: 0;
  padding: 0
}

.footer .site:before,.global-nav:before,.product-nav .container:before,.service-nav .container:before {
  content: "";
  display: table
}

.footer .site:after,.global-nav:after,.product-nav .container:after,.service-nav .container:after {
  content: "";
  display: table;
  clear: both;
  overflow: hidden
}

@font-face {
  font-family:TPSource;src:url(https://webresource.tp-link.com.cn/tp_web_common/font/Index/TPSource.eot);src:url(https://webresource.tp-link.com.cn/tp_web_common/font/Index/TPSource.eot) format("embedded-opentype"),url(https://webresource.tp-link.com.cn/tp_web_common/font/Index/TPSource.woff) format("woff"),url(https://webresource.tp-link.com.cn/tp_web_common/font/Index/TPSource.ttf) format("truetype"),url(https://webresource.tp-link.com.cn/tp_web_common/font/Index/TPSource.svg) format("svg");font-weight:400;font-style:normal
}

@font-face {
  font-family:TPSource-Medium;src:url(https://webresource.tp-link.com.cn/tp_web_common/font/Index/TPSource-Medium.eot);src:url(https://webresource.tp-link.com.cn/tp_web_common/font/Index/TPSource-Medium.eot) format("embedded-opentype"),url(https://webresource.tp-link.com.cn/tp_web_common/font/Index/TPSource-Medium.woff) format("woff"),url(https://webresource.tp-link.com.cn/tp_web_common/font/Index/TPSource-Medium.ttf) format("truetype"),url(https://webresource.tp-link.com.cn/tp_web_common/font/Index/TPSource-Medium.svg) format("svg");font-weight:400;font-style:normal
}

@font-face {
  font-family:manrope-bold;src:url(https://webresource.tp-link.com.cn/tp_web_common/font/English/manrope-bold.eot);src:url(https://webresource.tp-link.com.cn/tp_web_common/font/English/manrope-bold.eot) format("embedded-opentype"),url(https://webresource.tp-link.com.cn/tp_web_common/font/English/manrope-bold.woff) format("woff"),url(https://webresource.tp-link.com.cn/tp_web_common/font/English/manrope-bold.ttf) format("truetype"),url(https://webresource.tp-link.com.cn/tp_web_common/font/English/manrope-bold.svg) format("svg");font-weight:400;font-style:normal
}

* {
  box-sizing: border-box
}

article,aside,figcaption,figure,footer,header,img,nav,section {
  display: block
}

audio,canvas,video {
  display: inline-block;
  vertical-align: baseline
}

h1,h2,h3,h4,h5,h6 {
  font-weight: 400
}

ol,ul {
  list-style-type: none
}

a {
  background-color: transparent;
  font-size: inherit;
  color: inherit;
  line-height: inherit;
  text-decoration: none
}

:focus,a:active,a:hover {
  outline: 0
}

button,html input[type=button],input[type=submit],input[type=reset] {
  font: inherit;
  color: inherit;
  background-color: transparent;
  -webkit-appearance: button;
  cursor: pointer
}

button::-moz-focus-inner,input::-moz-focus-inner {
  border: 0;
  padding: 0
}

input {
  line-height: normal
}

input::-webkit-input-placeholder {
  font-weight: 300
}

input::-ms-input-placeholder {
  font-weight: 300
}

input::-moz-placeholder {
  font-weight: 300
}

input[type=number]::-webkit-inner-spin-button,input[type=number]::-webkit-outer-spin-button {
  height: auto;
  -webkit-appearance: none!important
}

input[type=number] {
  -moz-appearance: textfield
}

input[type=search] {
  -webkit-appearance: textfield
}

input[type=search]::-webkit-search-cancel-button,input[type=search]::-webkit-search-decoration {
  -webkit-appearance: none
}

textarea {
  font: inherit;
  overflow: auto;
  resize: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none
}

select {
  -webkit-appearance: none;
  background-color: #fff
}

body {
  font-family: "Noto Sans CJK SC","Source Han Sans CN","Microsoft YaHei";
  font-size: 16px;
  line-height: 1;
  background-color: #f4f4f4
}

.container {
  margin: 0 auto
}

.header {
  position: fixed;
  left: 0;
  right: 0;
  z-index: 999999
}

.main {
  padding-top: 50px
}

.clear {
  clear: both
}

.global-nav {
  position: relative;
  min-width: 1200px;
  height: 50px;
  padding: 0 32px;
  background-color: #222
}

.global-nav .logo {
  float: left;
  margin: 17px 0;
  width: 125px;
  height: 16px;
  background-image: url(../images2017/common/logo.png);
  background-size: contain;
  background-repeat: no-repeat
}

.global-nav .nav-list {
  position: absolute;
  top: 0;
  left: 50%;
  margin-left: -355.1px;
  height: 100%
}

.global-nav .nav-list-item {
  display: inline-block;
  margin: 0 28px;
  color: #fff
}

.global-nav .nav-list-item a {
  display: inline-block;
  padding: 17px 10px;
  height: 50px
}

.global-nav .nav-list-item a.active,.global-nav .nav-list-item a:hover {
  color: #0090ff;
  border-bottom: 4px solid #0090ff
}

.global-nav .menu {
  float: right;
  height: 100%
}

.global-nav .menu-item {
  display: inline-block;
  margin-left: 15px;
  height: 100%;
  line-height: 50px;
  color: #b7b7b7
}

.global-nav .search-form {
  position: relative;
  float: right;
  margin: 14px 0
}

.global-nav .search-form.open .search-input {
  visibility: visible;
  width: 160px;
  padding: 0 22px 0 11px
}

.global-nav .search-input {
  visibility: hidden;
  width: 0;
  height: 22px;
  padding: 0 11px;
  border-radius: 11px;
  transition: width .3s ease;
  border: none
}

.global-nav .search-btn {
  position: absolute;
  right: 0;
  top: 0;
  width: 28px;
  height: 22px;
  border: none
}

.icon-glass {
  display: inline-block;
  position: relative;
  width: 14px;
  height: 14px;
  border: 3px solid #b7b7b7;
  border-radius: 50%;
  background-color: transparent
}

.product-nav.open,.service-nav.open {
  opacity: 1;
  border-top: 1px solid #E0E0E0
}

.icon-glass:after {
  content: "";
  display: inline-block;
  position: absolute;
  right: -5px;
  bottom: -4px;
  width: 8px;
  height: 3px;
  background-color: #b7b7b7;
  -ms-transform: rotate(45deg);
  transform: rotate(45deg)
}

.header-nav {
  height: 60px;
  background-color: #323232
}

.header-nav .nav-list {
  display: table;
  margin: 0 auto;
  height: 100%
}

.header-nav .nav-list-item {
  display: inline-block;
  margin: 0 45px;
  color: #fff
}

.header-nav .nav-list-item a {
  display: inline-block;
  padding: 22px 10px;
  height: 60px
}

.header-nav .nav-list-item a.active,.header-nav .nav-list-item a:hover {
  color: #0090ff;
  border-bottom: 4px solid #0090ff
}

.product-nav.open {
  height: auto;
}

.service-nav.open {
  height: 288px
}

.mask {
  position: fixed;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,.5);
  z-index: 10;
  display: none
}

.mask.open {
  display: block
}

.product-nav,.service-nav {
  position: absolute;
  top: 50px;
  width: 100%;
  background-color: #fff;
  height: 0;
  opacity: .3;
  overflow: hidden;
  transition: height .3s ease,opacity .3s ease;
  box-shadow: 0 2px 8px 0 rgba(0,0,0,.2);
  z-index: 11;
}

.product-nav .container,.service-nav .container {
  display: flex;
  flex-wrap: wrap;
  padding: 36px 0;
  width: 1200px;
  margin: 0 auto;
  z-index: 11;
  position: relative;
  background: #fff
}

.product-nav .container .arrow-up,.service-nav .container .arrow-up {
  position: absolute;
  bottom: 20px;
  right: -45px;
  width: 24px;
  opacity: .5;
  cursor: pointer
}

.product-nav .container .arrow-up:hover,.service-nav .container .arrow-up:hover {
  opacity: 1
}

.product-nav .column,.service-nav .column {
  float: left;
  width: 20%;
  padding: 0 10px
}

.product-nav .column:nth-child(-n+4) .item:first-child,.service-nav .column:nth-child(-n+4) .item:first-child {

}

.product-nav .column:nth-child(-n+4) .item:nth-child(2),.service-nav .column:nth-child(-n+4) .item:nth-child(2) {

}

.product-nav .column:nth-child(-n+2) .item:first-child,.product-nav .column:nth-child(5) .item:first-child,.service-nav .column:nth-child(-n+2) .item:first-child,.service-nav .column:nth-child(5) .item:first-child {

}

.product-nav .item,.service-nav .item {
  position: relative
}

.product-nav .product-cat-img,.service-nav .product-cat-img {
  position: absolute
}

.product-nav .product-cat,.product-nav .service-cat,.service-nav .product-cat,.service-nav .service-cat {
  margin-left: 80px;
  font-size: 13px
}

.product-nav .product-cat-title,.product-nav .service-cat-title,.service-nav .product-cat-title,.service-nav .service-cat-title {
  padding-bottom: 3px;
  font-size: 15px;
  color: #0090ff;
  line-height: 20px;
  font-family: manrope-regular,TPSource-Medium,TPSource,'Microsoft YaHei',Arial
}

.product-nav .product-cat-list,.product-nav .service-cat-list,.service-nav .product-cat-list,.service-nav .service-cat-list {
  margin-top: 4px
}

.product-nav .product-cat-item,.product-nav .service-cat-item,.service-nav .product-cat-item,.service-nav .service-cat-item {
  position: relative;
  padding: 6px 0 6px 12px;
  font-family: manrope-regular,TPSource,PingFangSC-Regular,sans-serif,'Microsoft YaHei',Arial
}

.product-nav .product-cat-item a,.product-nav .service-cat-item a,.service-nav .product-cat-item a,.service-nav .service-cat-item a {
  font-size: 13px
}

.product-nav .product-cat-item::before,.product-nav .service-cat-item::before,.service-nav .product-cat-item::before,.service-nav .service-cat-item::before {
  content: "";
  display: block;
  position: absolute;
  left: 0;
  top: 43.5%;
  margin-top: 0;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background-color: #000
}

.product-nav .product-cat-item.red::before,.product-nav .service-cat-item.red::before,.service-nav .product-cat-item.red::before,.service-nav .service-cat-item.red::before {
  background-color: #FF1E1A
}

.product-nav .product-cat-item .active,.product-nav .product-cat-item a:hover,.product-nav .service-cat-item .active,.product-nav .service-cat-item a:hover,.service-nav .product-cat-item .active,.service-nav .product-cat-item a:hover,.service-nav .service-cat-item .active,.service-nav .service-cat-item a:hover {
  color: #0090ff;
  transition: color .15s ease
}

.product-nav .column {
  padding: 0
}

.product-nav .column{
  width: 20%;
}

.product-nav .product-cat-img {
  width: 60px;
  height: 60px;
  top: 0
}

.product-nav .product-cat {
  margin-left: 84px
}

.product-nav .product-cat .product-cat-title {
  font-size: 15px;
  color: #006FFF;
  border-bottom: none
}

.product-nav .product-cat-item {
  padding: 0 0 0 8px;
  line-height: 15px;
  margin: 14px 0
}

.product-nav .product-cat-item a {
  font-size: 13px;
  color: #222
}

.product-nav .product-cat-item a.red {
  color: #FF1E1A
}

.product-nav .product-cat-item a.recommend {
  background: url(https://webresource.tp-link.com.cn/tp_web_common/images/recommend_icon.jpg) right center no-repeat;
  background-size: 18px 18px;
  padding-right: 24px
}

.service-nav {
  padding-left: 246px
}

.service-nav .column {
  width: 250px;
  padding: 0;
  margin: 0 0 0 15px
}

.service-nav .column:nth-child(5) {
  padding-right: 0
}

.service-nav .product-cat-img {
  width: 40px;
  height: 40px;
  top: -10px
}

.service-nav .product-cat {
  margin-left: 48px
}

.service-nav .product-cat-item {
  padding: 4px 0 4px 8px;
  line-height: 18px
}

.service-nav .product-cat-item:hover:before {
  background-color: #08F
}

.service-nav .container2 {
  width: 880px;
  margin: 30px auto
}

.service-nav .container2-link {
  display: block;
  height: 60px;
  float: left;
  margin-right: 48px
}

.service-nav .container2-link:last-child {
  margin-right: 0
}

.service-nav .container2-item {
  float: left
}

.service-nav .container2-item-img {
  float: left;
  width: 48px;
  height: 48px;
  margin-right: 6px
}

.service-nav .container2-item-word {
  float: left;
  font-size: 14px;
  line-height: 48px;
  color: #333
}

.service-nav .container2-item-word:hover {
  color: #00A8FF
}


@media screen and (max-height:769px) {
  .product-nav .product-cat-item {
    margin: 7px 0
  }

  .product-nav.open {
    opacity: 1;
    height: 560px
  }

  .product-nav .container,.service-nav .container {
    padding: 17px 0
  }

  #item1 {
    height: 205px
  }

  #item2 {
    height: 171px
  }

  #item3 {
    height: 244px
  }

  #item4 {
    height: 207px!important
  }

  #item5 {
    height: 147px
  }

  #item6 {
    height: 224px
  }

  #item7 {
    height: 309px
  }

  #item8 {
    height: 184px!important
  }

  #item9 {
    height: 204px!important
  }
}

.footer_text a{
  color: inherit!important;
}


.product-nav-content{
  display: flex;
  width: 100%;
  padding-top: 12px;
  border-top: 1px solid #ccc;
}
.product-nav-content .left{
  flex: 0 0 260px; /* 左侧固定300px */
  height: 500px;
  height: 500px;
  overflow-x: auto;
}
.product-nav-content .right{
  flex: 1; /* 随父级变化 */
  height: 500px;
  height: 500px;
  overflow-x: auto;
}
.product-nav-content .right .product-group{
  display: none;
  justify-content: flex-start;
  flex-wrap: wrap;
  padding: 4px;
}
.product-nav-content .right .product-group.selected{
  display: flex;
}
.product-nav-content .left .nav-category{
  line-height: 40px;
  border-radius:2px;
  padding-left: 12px;
  padding-right: 4px;
  font-size: 14px;
  font-weight: 600;
  color: #44a8f2;;
  cursor: pointer;
  display: flex;
  width: 100%;
}
.product-nav-content .left .nav-category:hover{
  background: #44a8f2;
  color: #fff;
}
.product-nav-content .left .nav-category .title{
  width: 88%;
}
.product-nav-content .left .nav-category .arrow{
  width: 12%;
  background-image: url("/res/web/images/arrow_right_1.png");
  background-position: center;
  background-size: 28px 28px;
  background-repeat: no-repeat;
}

.product-nav-content .left .nav-category:hover .arrow{
  background-image: url("/res/web/images/arrow_right_2.png");
  background-position: center;
  background-size: 28px 28px;
  background-repeat: no-repeat;
}

.product-nav-content .left .nav-category.selected{
  background: #44a8f2;
  color: #fff;
}
.product-nav-content .left .nav-category.selected .arrow{
  background-image: url("/res/web/images/arrow_right_2.png");
  background-position: center;
  background-size: 28px 28px;
  background-repeat: no-repeat;
}

.product-nav-content .right  .nav-product{
  width: 450px;
  height: 120px;
  display: flex;
  justify-content: space-between;
  background: #F4F4F6;
  border-radius: 2px;
  margin: 6px;
  cursor: pointer;
  color: #333;
}
.product-nav-content .right  .nav-product:hover{
  background: #E2E2E2;
}
.product-nav-content .right  .nav-product .nav-product-cover{
  width: 120px;
  height: 120px;
}
.product-nav-content .right  .nav-product .nav-product-cover img{
  width: 120px;
  height: 120px;
}
.product-nav-content .right  .nav-product .nav-product-desc{
  width: 326px;
  height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding:12px;
  line-height: 28px;
}
.product-nav-content .right  .nav-product .nav-product-desc .about{
  font-size: 12px;
}

/*定义滚动条高宽及背景 高宽分别对应横竖滚动条的尺寸*/
::-webkit-scrollbar{
  width: 7px;
  height: 7px;
  background-color: #F5F5F5;
}

/*定义滚动条轨道 内阴影+圆角*/
::-webkit-scrollbar-track {
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
  -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
  border-radius: 10px;
  background-color: #F5F5F5;
}

/*定义滑块 内阴影+圆角*/
::-webkit-scrollbar-thumb{
  border-radius: 10px;
  box-shadow: inset 0 0 6px rgba(0, 0, 0, .1);
  -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, .1);
  background-color: #c8c8c8;
}