.sections-wrapper {
  background: #fff;
}
p {
    margin-bottom: 20px;
}
h3{
    line-height: 1.5;
}
.why .title {
  font-size: 30px;
  margin-top: 0;
}
.why .intro {
  color: #999;
  margin-bottom: 30px;
  font-size: 18px;
}
.why .item {
  padding: 66px 0;
}
.why .item .content{
  padding-top: 90px;
}
.why .item.last-item {
  border-bottom: none;
}
.why .item .title {
  font-size: 30px;
  font-weight: 500;
  color: #282e39;
  margin-top: 0;
  margin-bottom: 15px;
}
.why .item .desc {
  margin-bottom: 10px;
  font-size: 18px;
  color: #606063;
}
.why .item .desc .fa {
  margin-right: 5px;
}
.why .item .desc .phone,
.why .item .desc .platform1,
.why .item .desc .safe {
  margin-top: 50px;
}
.why .item .desc .icon span{
  display: inline-block;
  width: 30px;
  height: 30px;
  background: url('../images/icon.png') no-repeat 0 0;
  vertical-align: middle;
  margin-right: 22px;
}
.why .item .desc .platform span {
  background-position: 0 -30px;
}
.why .item .desc .location span {
  background-position: 0 -60px;
}
.why .item .desc .safe span {
  height: 32px;
  background-position: 0 -90px;
}
.why .figure {
  position: relative;
  text-align: center;
}
.why .figure .figure-caption {
  color: #b3b3b3;
  font-size: 13px;
  margin-top: 10px;
  text-align: center;
}
.why .figure .figure-caption a {
  color: #b3b3b3;
}
.why .figure .figure-caption a:hover {
  color: #ec6952;
}
.why .figure img {
  margin-left: auto;
  margin-right: auto;
}
.why .figure img.left{
  margin-left: 0;
}
.why .figure img.right {
  margin-right: 0;
}

.why .figure #skin-img {
  position: absolute;
  left: 50%;
  top: 17.3%;
  transform: translateX(-50%);
  max-width: 60.5%;
}

.head-title h1{
  font-size: 30px;
}
.why .line{
  width: 100px;
  height: 3px;
  border-radius: 10px;
  background: #3699ff;
  margin-bottom: 20px;
}
/* 皮肤 */
.skin span{
  position: relative;
  display: inline-block;
  width: 140px;
  height: 46px;
  line-height: 46px;
  background: #fff;
  margin-right: 30px;
  border-radius: 40px;
  font-size: 18px;
  color: #333;
  text-align: right;
  padding-right: 30px;
  box-sizing: border-box;
  box-shadow:  0 0 10px #ddd;
  cursor: pointer;
}
.skin span i{
  position: absolute;
  left: 18px;
  top: 50%;
  margin-top: -9px;
  width: 18px;
  height: 18px;
  display: inline-block;
  background: url('../images//skin02.png') no-repeat center;
}
.skin span.active{
  background: #006eff;
  color: #fff;
}
.skin span.active i{
  background-image: url('../images/skin01.png');
}
/* Extra small devices (phones, less than 768px) */
@media (max-width: 767px) {
  .why .item .content {
    margin-bottom: 60px;
  }
  .why .item .title {
    margin-bottom: 30px;
    text-align: center;
  }
  .skin span{
    width: 130px;
    margin-right: 12px;
  }
}
/* Small devices (tablets, 768px and up) */
@media (min-width: 768px) {
  .why .item .content {
    margin-bottom: 60px;
  }
  .why .item .title {
    margin-bottom: 18px;
  }
}
/* Medium devices (desktops, 992px and up) */
@media (min-width: 992px) {
  .why .item .content {
    margin-bottom: inherit;
  }
}
/* Large devices (large desktops, 1200px and up) */
.live .item .content {
  padding-top: 0;
}

/* 小班课 */
.small .figure{
  padding: 0;
}
.small .video .item {
    padding: 50px 0;
}
.community-edition {
  background: #fff;
  padding: 20px 40px 10px;
}
.mt-30{
    margin-top: -22px;
}
.course-tool{
  padding-bottom: 50px;
}
.course-tool .head-title h1 {
  padding: 90px 0 50px;
  margin: 0;
  position: relative;
}
.community-edition i,
.net-box i {
  font-size: 60px;
  margin-bottom: 20px;
}

.community-edition h4,
.net-box h4 {
  font-size: 22px;
  color: #333;
  margin-bottom: 12px;
}

.community-edition p,
.net-box p {
  font-size: 14px;
  color: #999;
  line-height: 22px;
  height: 66px;
  margin-bottom: 0;
}
.bg-tool{
  display: inline-block;
  width: 58px;
  height: 58px;
  background: url('../images/img-01.png') no-repeat center;
  transition: all 0.6s;
}
.bg-02{
  background-image: url('../images/img-02.png');
}
.bg-03 {
  background-image: url('../images/img-03.png');
}
.bg-04 {
  background-image: url('../images/img-04.png');
}
.bg-05 {
  background-image: url('../images/img-05.png');
}
.bg-06 {
  background-image: url('../images/img-06.png');
}
.bg-07 {
  background-image: url('../images/img-07.png');
}
.bg-08 {
  background-image: url('../images/img-08.png');
}
.community-edition:hover .bg-01{
  background-image: url('../images/img-01-h.png');
}
.community-edition:hover .bg-02 {
  background-image: url('../images/img-02-h.png');
}
.community-edition:hover .bg-03 {
  background-image: url('../images/img-03-h.png');
}
.community-edition:hover .bg-04 {
  background-image: url('../images/img-04-h.png');
}
.community-edition:hover .bg-05 {
  background-image: url('../images/img-05-h.png');
}
.community-edition:hover .bg-06 {
  background-image: url('../images/img-06-h.png');
}
.community-edition:hover .bg-07 {
  background-image: url('../images/img-07-h.png');
}
.community-edition:hover .bg-08 {
  background-image: url('../images/img-08-h.png');
}

/* 拓课网校 */
.net-tool {
  padding-bottom: 80px;
}
.net-box {
  padding: 46px 30px 30px;
}
.net-tool .head-title h1 {
  padding: 100px 0 40px;
  margin: 0;
}

.bg-method {
  display: inline-block;
  width: 62px;
  height: 62px;
  background: url('../images/net01.png') no-repeat center;
  background-size: 100% 100%;
  transition: all 0.6s;
}

.bg-12 {
  background-image: url('../images/net02.png');
}

.bg-13 {
  background-image: url('../images/net03.png');
}

.bg-14 {
  background-image: url('../images/net04.png');
}

.bg-15 {
  background-image: url('../images/net05.png');
}

.bg-16 {
  background-image: url('../images/net06.png');
}

.net-box:hover .bg-11 {
  background-image: url('../images/net01-h.png');
}

.net-box:hover .bg-12 {
  background-image: url('../images/net02-h.png');
}

.net-box:hover .bg-13 {
  background-image: url('../images/net03-h.png');
}

.net-box:hover .bg-14 {
  background-image: url('../images/net04-h.png');
}

.net-box:hover .bg-15 {
  background-image: url('../images/net05-h.png');
}

.net-box:hover .bg-16 {
  background-image: url('../images/net06-h.png');
}
/* 在线语培 */
.solve .bg-method {
  display: inline-block;
  width: 60px;
  height: 60px;
  background: url('../images/online-icon01.png') no-repeat center;
}
.solve .net-box{
  padding: 56px 26px 50px;
}

.solve .bg-12 {
  background-image: url('../images/online-icon02.png');
}

.solve .bg-13 {
  background-image: url('../images/online-icon03.png');
}

.solve .bg-14 {
  background-image: url('../images/online-icon04.png');
}

.solve .bg-15 {
  background-image: url('../images/online-icon05.png');
}

.solve .bg-16 {
  background-image: url('../images/online-icon06.png');
}

.solve .net-box:hover .bg-11 {
  background-image: url('../images/online-icon01-h.png');
}

.solve .net-box:hover .bg-12 {
  background-image: url('../images/online-icon02-h.png');
}

.solve .net-box:hover .bg-13 {
  background-image: url('../images/online-icon03-h.png');
}

.solve .net-box:hover .bg-14 {
  background-image: url('../images/online-icon04-h.png');
}

.solve .net-box:hover .bg-15 {
  background-image: url('../images/online-icon05-h.png');
}

.solve .net-box:hover .bg-16 {
  background-image: url('../images/online-icon06-h.png');
}

/* 双师教学 */
.double .net-tool{
    padding-bottom: 46px;
}
.net-tool .col-5{
  width: 20%;
  text-align: center;
  float: left;
}
.double .bg-method {
  display: inline-block;
  width: 60px;
  height: 60px;
  background: url('../images/double-icon01.png') no-repeat center;
}

.double .net-box {
  padding: 56px 16px 130px;
}
@media screen and (max-width:992px){
  .net-tool .col-5 {
    width: 100%;
  }
  .double .net-box {
    padding: 30px 16px 10px;
  }
  .steam .net-box,
  .subject .net-box {
    padding-bottom: 0;
  }
}
@media screen and (max-width: 450px){
  .double .net-box {
    padding-bottom: 40px;
  }
  .steam .net-box,
  .subject .net-box {
    padding-bottom: 16px;
  }
}
.double .bg-12 {
  background-image: url('../images/double-icon02.png');
}

.double .bg-13 {
  background-image: url('../images/double-icon03.png');
}

.double .bg-14 {
  background-image: url('../images/double-icon04.png');
}

.double .bg-15 {
  background-image: url('../images/double-icon05.png');
}

.double .net-box:hover .bg-11 {
  background-image: url('../images/double-icon01-h.png');
}

.double .net-box:hover .bg-12 {
  background-image: url('../images/double-icon02-h.png');
}

.double .net-box:hover .bg-13 {
  background-image: url('../images/double-icon03-h.png');
}

.double .net-box:hover .bg-14 {
  background-image: url('../images/double-icon04-h.png');
}

.double .net-box:hover .bg-15 {
  background-image: url('../images/double-icon05-h.png');
}

/* steam */
.steam .bg-11 {
    background-image: url('../images/steam-icon01.png');
}
.steam .bg-12 {
    background-image: url('../images/steam-icon02.png');
}

.steam .bg-13 {
    background-image: url('../images/steam-icon03.png');
}

.steam .bg-14 {
    background-image: url('../images/steam-icon04.png');
}

.steam .bg-15 {
    background-image: url('../images/steam-icon05.png');
}

.steam .net-box:hover .bg-11 {
    background-image: url('../images/steam-icon01-h.png');
}

.steam .net-box:hover .bg-12 {
    background-image: url('../images/steam-icon02-h.png');
}

.steam .net-box:hover .bg-13 {
    background-image: url('../images/steam-icon03-h.png');
}

.steam .net-box:hover .bg-14 {
    background-image: url('../images/steam-icon04-h.png');
}

.steam .net-box:hover .bg-15 {
    background-image: url('../images/steam-icon05-h.png');
}

/* k12 */
.subject .bg-11 {
    background-image: url('../images/subject-icon01.png');
}

.subject .bg-12 {
    background-image: url('../images/subject-icon02.png');
}

.subject .bg-13 {
    background-image: url('../images/subject-icon03.png');
}

.subject .bg-14 {
    background-image: url('../images/subject-icon04.png');
}

.subject .bg-15 {
    background-image: url('../images/subject-icon05.png');
}

.subject .net-box:hover .bg-11 {
    background-image: url('../images/subject-icon01-h.png');
}

.subject .net-box:hover .bg-12 {
    background-image: url('../images/subject-icon02-h.png');
}

.subject .net-box:hover .bg-13 {
    background-image: url('../images/subject-icon03-h.png');
}

.subject .net-box:hover .bg-14 {
    background-image: url('../images/subject-icon04-h.png');
}

.subject .net-box:hover .bg-15 {
    background-image: url('../images/subject-icon05-h.png');
}

.steam .net-tool,
.subject .net-tool {
    padding-bottom: 0;
}
/*iso二维码*/
#android1 .code .code-img{
  width: 180px !important;
  height: 180px !important;
}
#android2 .code .code-img{
  width: 180px !important;
  height: 180px !important;
}
#android3 .code .code-img{
  width: 180px !important;
  height: 180px !important;
}
#android4 .code .code-img{
  width: 180px !important;
  height: 180px !important;
}
#plus .code .code-img{
  width: 180px !important;
  height: 180px !important;
}
#ipad .code .code-img{
  width: 180px !important;
  height: 180px !important;
}
#iphone .code .code-img{
  width: 180px !important;
  height: 180px !important;
}