.banner {
  width: 100%;
  height: 600px;
  background: url(../../images/marketingtools/banner_bg.png) no-repeat center/cover;
}

.banner-content {
  display: flex;
  align-items: center;
  position: relative;
}

.banner-content .text-box {
  padding-left: 14px;
}

.banner-content .text-box h1 {
  font-size: 44px;
  color: #fff;
  font-weight: 600;
  line-height: 66px;
}

.banner-content .text-box .desc {
  font-size: 24px;
  color: #fff;
  line-height: 33px;
  margin-top: 18px;
}

.banner-content .img-box {
  width: 651px;
  position: absolute;
  right: 41px;
  bottom: 0;
}

.banner-content .img-box img {
  max-width: 100%;
}

.sec-box {
  position: relative;
}

.sec {
  padding: 84px 0;
}

.sec:nth-child(2n-1) {
  background: #F9FAFF;
}

.common_title {
  font-size: 44px;
  font-weight: 600;
  line-height: 66px;
  color: #000;
  text-align: center;
}

.common_subtitle {
  font-size: 18px;
  line-height: 36px;
  color: #444;
  margin-top: 7px;
  letter-spacing: 3px;
  text-align: center;
}

.sec1 {
  padding-top: 249px;
  position: relative;
}

.switch-carousel {
  width: 1200px;
  height: 256px;
  position: absolute;
  top: -80px;
  left: 50%;
  background: #fff;
  transform: translateX(-50%);
  box-shadow: 0px 2px 11px 0px rgba(132, 152, 191, 0.33);
  border-radius: 12px;
}

.switch-carousel .switch-carousel-nav {
  height: 80px;
  box-sizing: border-box;
  border-bottom: solid 1px #E1E2E2;
  display: flex;
  justify-content: center;
}

.switch-carousel .switch-carousel-nav .nav-item {
  font-size: 20px;
  color: #333;
  line-height: 78px;
  float: left;
  cursor: pointer;
  margin-right: 100px;
}

.switch-carousel .switch-carousel-nav .nav-item:last-child {
  margin-right: 0;
}

.switch-carousel .switch-carousel-nav .nav-item.active {
  border-bottom: solid 2px #004BE1;
}

.switch-carousel-item {
  display: none;
}

.switch-carousel-item.active {
  display: block;
}

.switch-carousel-items .item-list {
  height: 176px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 28px;
}

.switch-carousel-items .item-list .item {
  width: 267px;
  height: 120px;
  border-radius: 6px;
  display: flex;
  justify-content: center;
  flex-direction: column;
  position: relative;
  z-index: 1;
  box-sizing: border-box;
  padding-left: 22px;
  overflow: hidden;
}

.switch-carousel-items .item-list .item .bg-img {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  z-index: -1;
}

.switch-carousel-items .item-list .item .title {
  font-size: 22px;
  color: #fff;
  font-weight: 700;
}

.switch-carousel-items .item-list .item .desc {
  font-size: 14px;
  color: #fff;
  margin-top: 12px;
}

.sec-content {
  margin-top: 50px;
}

.sec-content .top {
  overflow: hidden;
}

.sec-content .top .advertising {
  width: 280px;
  height: 478px;
  padding: 20px;
  border-radius: 6px;
  box-sizing: border-box;
  float: left;
}

.sec:nth-child(2n-1) .sec-content .top .advertising {
  background: url(../../images/marketingtools/sec1_01.png) no-repeat center/cover;
}

.sec:nth-child(2n) .sec-content .top .advertising {
  background: url(../../images/marketingtools/sec2_01.png) no-repeat center/cover;
}

.sec-content .advertising .title {
  font-size: 24px;
  font-weight: 600;
  color: #fff;
  line-height: 33px;
}

.sec-content .advertising .sub-title {
  font-size: 16px;
  color: #fff;
  line-height: 22px;
  margin-top: 6px;
}

.sec-content .advertising .desc {
  font-size: 14px;
  color: #B2CAFF;
  line-height: 20px;
  padding-bottom: 24px;
  margin-top: 8px;
  border-bottom: 1px dashed #B2CAFF;
}

.sec-content .advertising .scene-title {
  margin-top: 16px;
  font-size: 18px;
  font-weight: 600;
  line-height: 25px;
  color: #fff;
}

.sec-content .advertising .scene-list .scene {
  width: 67px;
  height: 23px;
  line-height: 23px;
  text-align: center;
  float: left;
  margin-top: 10px;
  margin-right: 18px;
  font-size: 12px;
  color: #fff;
  cursor: pointer;
  border-radius: 2px;
  background: rgba(255, 255, 255, .15);
}

.sec-content .advertising .more {
  display: block;
  width: 100%;
  height: 40px;
  border-radius: 4px;
  background: #fff;
  text-align: center;
  line-height: 40px;
  font-size: 14px;
  color: #333;
  margin-top: 20px;
  cursor: pointer;
}

.sec-content .advertising .scene-list .scene:nth-child(3n) {
  margin-right: 0;
}

.sec-content .top .tool-list {
  width: 920px;
  float: left;
  padding-left: 26px;
  box-sizing: border-box;
}

.sec-content .tool-list .tool {
  display: block;
  width: 280px;
  height: 140px;
  box-sizing: border-box;
  float: left;
  background: linear-gradient(180deg, #F4F5F8 0%, #FFFFFF 100%);
  box-shadow: 0px 4px 6px 0px #EFF3F9;
  border-radius: 6px;
  border: 2px solid #FFFFFF;
  margin-right: 26px;
  margin-top: 26px;
  overflow: hidden;
}

.sec-content .tool-list .tool .tool-content {
  width: 100%;
  height: 100px;
  position: relative;
  box-sizing: border-box;
  padding: 24px;
}

.sec-content .tool-list .tool .tool-content .text-box .title {
  font-size: 20px;
  font-weight: 600;
  color: #000;
  line-height: 28px;
}

.sec-content .tool-list .tool .tool-content .text-box .desc {
  font-size: 16px;
  line-height: 22px;
  margin-top: 5px;
  color: #666;
}

.sec-content .tool-list .tool .tool-more {
  width: 100%;
  height: 40px;
  line-height: 40px;
  box-sizing: border-box;
  padding: 0 24px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #C3C3C3;
  border-radius: 0 0 6px 6px;
}

.sec-content .tool-list .tool .tool-more .text {
  font-size: 16px;
  line-height: 40px;
}

.sec-content .tool-list .tool .tool-more .icon {
  width: 16px;
  height: 16px;
  background: url(../../images/marketingtools/more_gray.png) no-repeat center/cover;
}

.sec-content .tool-list .tool:hover .tool-more {
  background: #276AEF;
  color: #fff;
}

.sec-content .tool-list .tool:hover .tool-more .icon {
  background: url(../../images/marketingtools/more_wihte.png) no-repeat center/cover;
}

.sec-content .tool-list .tool .tool-content .img-box {
  width: 40px;
  position: absolute;
  right: 24px;
  top: 24px;
}

.sec-content .tool-list .tool .tool-content .img-box img {
  width: 100%;
}

.sec-content .top .tool-list .tool:nth-child(3n) {
  margin-right: 0;
}

.sec-content .top .tool-list .tool:nth-child(-n+3) {
  margin-top: 0;
}

.sec-content .bottom .tool-list .tool:nth-child(4n) {
  margin-right: 0;
}

.sec-content .bottom .tool-list .tool:nth-child(-n+4) {
  margin-top: 0;
}

.sec-content .bottom {
  display: none;
  margin-top: 26px;
}

.sec-content .more-tool {
  font-size: 16px;
  line-height: 22px;
  color: #444;
  margin-top: 60px;
  text-align: center;
  cursor: pointer;
}

.sec-content .more-tool span {
  vertical-align: middle;
}

.sec-content .more-tool img {
  width: 16px;
  vertical-align: middle;
  margin-left: 6px;
}

.sec-content .more-tool.shrink img {
  transform: rotate(180deg);
}

.sidebar_l {
  position: absolute;
  left: 20px;
  top: 250px;
  width: 90px;
  box-sizing: border-box;
  padding: 15px 25px;
  background: #FFFFFF;
  box-shadow: 0px 2px 10px 0px #CFD5DF;
  border-radius: 12px;
}

.sidebar_l.fixed {
  position: fixed;
  top: 120px;
  left: 20px;
}

.sidebar_l li {
  padding: 10px 0;
  border-bottom: solid 1px #D8D8D8;
  text-align: center;
  font-size: 16px;
  color: #666;
  line-height: 24px;
  cursor: pointer;
}

.sidebar_l li.active {
  color: #004BE1;
}

.sidebar_l li:last-child {
  border-bottom: none;
}