.banner {
  width: 100%;
  height: 795px;
  background: url(../images/bg1.png) no-repeat top center;
  background-size: cover;
  padding-top: 245px;
}
.banner .tit {
  text-align: center;
  color: #fff;
}
.banner .tit h4 {
  font-size: 60px;
  font-weight: bold;
}
.banner .tit p {
  font-size: 30px;
  margin-top: 30px;
}
.description {
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  top: -150px;
  background-color: #fff;
  border-radius: 10px;
  width: 100%;
  box-shadow: 0 0 10px #f3f3f3;
  font-size: 20px;
  color: #333;
  padding: 75px;
}
.title1 {
  text-align: center;
  color: #0055c4;
  display: flex;
  align-items: center;
  justify-content: center;
}
.title1 .left {
  font-size: 70px;
}
.title1 .middle {
  width: 8px;
  height: 82px;
  background-color: #0055c4;
  margin: 0 20px;
}
.title1 .right {
  font-size: 24px;
  line-height: 35px;
}
.upgrade .content {
  margin-top: 50px;
}
.upgrade .content ul {
  display: flex;
  justify-content: center;
}
.upgrade .content ul li {
  width: 362px;
  height: 362px;
  text-align: center;
}
.upgrade .content ul li .back {
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.upgrade .content ul li p {
  font-size: 30px;
  color: #fff;
}
.upgrade .content ul li a {
  font-size: 24px;
  color: #e3d00f;
}
.upgrade .content ul li:nth-child(1) {
  background: url(../images/img1.png) no-repeat;
  background-size: cover;
}
.upgrade .content ul li:nth-child(2) {
  background: url(../images/img2.png) no-repeat;
  background-size: cover;
}
.upgrade .content ul li:nth-child(3) {
  background: url(../images/img3.png) no-repeat;
  background-size: cover;
}
.upgrade .content ul li:hover .back {
  background-color: rgba(9, 109, 195, 0.8);
}
.title2 {
  text-align: center;
  color: #2b56ae;
}
.title2 .num {
  font-size: 50px;
}
.title2 h3 {
  font-size: 40px;
}
.title2 p {
  font-size: 20px;
  color: #666;
  margin: 20px;
}
.yi {
  margin-top: 150px;
}
.yi .content {
  display: flex;
  justify-content: space-between;
}
.yi .content .item {
  width: 530px;
  border-radius: 5px;
  overflow: hidden;
  box-shadow: 0 10px 10px #f4f4f4;
}
.yi .content .item .top {
  line-height: 82px;
  background-color: #3575ee;
  color: #fff;
  padding-left: 50px;
  font-size: 36px;
  font-weight: 500           ;
}
.yi .content .item .bottom {
  padding: 30px 0;
}
.yi .content .item .bottom ul {
  display: flex;
  flex-wrap: wrap;
}
.yi .content .item .bottom ul li {
  width: 50%;
  height: 110px;
  display: flex;
  align-items: center;
  padding-left: 40px;
}
.yi .content .item .bottom ul li img {
  width: 58px;
  margin-right: 20px;
}
.yi .content .item .bottom ul li p {
  font-size: 18px;
  color: #333;
}
.more {
  display: block;
  width: 302px;
  line-height: 56px;
  border-radius: 28px;
  background-color: #3c78e7;
  color: #fff;
  text-align: center;
  font-size: 20px;
  margin: 50px auto 0;
}
.er {
  background: url(../images/bg2.jpg) no-repeat top center;
  background-size: cover;
  padding: 180px 0 70px;
}
.er .content .top ul {
  margin-top: 50px;
  display: flex;
  justify-content: space-between;
}
.er .content .top ul li {
  width: 267px;
  height: 210px;
  padding-left: 40px;
  padding-top: 20px;
  position: relative;
}
.er .content .top ul li .sort {
  font-size: 58px;
  color: #c7d0dc;
  line-height: 70px;
}
.er .content .top ul li h4 {
  font-size: 24px;
  color: #333;
  margin-bottom: 10px;
}
.er .content .top ul li p {
  font-size: 18px;
  color: #666;
}
.er .content .top ul li:nth-child(1) {
  background: url(../images/xuexi.png) no-repeat;
  background-size: cover;
}
.er .content .top ul li:nth-child(2) {
  background: url(../images/chongci.png) no-repeat;
  background-size: cover;
}
.er .content .top ul li:nth-child(3) {
  background: url(../images/kaoshi.png) no-repeat;
  background-size: cover;
}
.er .content .top ul li:after {
  content: "";
  width: 23px;
  height: 40px;
  background: url(../images/arrow.png) no-repeat;
  background-size: contain;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right: -100px;
}
.er .content .top ul li:nth-child(3):after {
  display: none;
}
.er .content .bottom {
  margin-top: 40px;
}
.er .content .bottom ul {
  display: flex;
  justify-content: space-between;
}
.er .content .bottom ul li {
  width: 354px;
  height: 206px;
  border-radius: 5px;
  overflow: hidden;
  background-color: #fff;
  display: flex;
}
.er .content .bottom ul li .left {
  width: 80px;
  height: 206px;
  background-color: #8ea8d9;
  font-size: 72px;
  color: #e2e8f5;
  line-height: 206px;
  text-align: center;
}
.er .content .bottom ul li .right {
  flex: 1;
  padding: 0 20px;
}
.er .content .bottom ul li .right h3 {
  color: #333;
  font-size: 20px;
  padding: 30px 0 20px;
}
.er .content .bottom ul li .right p {
  font-size: 16px;
  color: #666;
}
.er .more {
  margin: 50px auto 0;
}
.san {
  margin-top: 100px;
  padding-bottom: 150px;
}
.san .content .top {
  margin-top: 50px;
}
.san .content .top ul {
  width: 1088px;
  height: 340px;
  background: url(../images/bg4.png) no-repeat;
  background-size: cover;
}
.san .content .top ul li {
  height: 340px;
  display: none;
  position: relative;
}
.san .content .top ul li .left {
  float: left;
  width: 500px;
  height: 100%;
  position: relative;
}
.san .content .top ul li .left img {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}
.san .content .top ul li .right {
  float: right;
  width: 588px;
  color: #fff;
  padding-right: 110px;
  padding-top: 80px;
}
.san .content .top ul li .right h3 {
  font-size: 54px;
}
.san .content .top ul li .right h3 span {
  font-size: 18px;
  margin-left: 80px;
}
.san .content .top ul li .right p {
  font-size: 20px;
}
.san .content .top ul .block {
  display: block;
}
.san .content .top ul li:after {
  content: "";
  width: 0;
  height: 0;
  border-top: 30px solid #3c78e7;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  position: absolute;
  bottom: -30px;
}
.san .content .top ul .one:after {
  left: 5%;
}
.san .content .top ul .two:after {
  left: 21%;
}
.san .content .top ul .three:after {
  left: 38%;
}
.san .content .top ul .four:after {
  left: 55%;
}
.san .content .top ul .five:after {
  left: 74%;
}
.san .content .top ul .six:after {
  left: 92%;
}
.san .content .bottom {
  margin-top: 60px;
}
.san .content .bottom ul {
  display: flex;
  justify-content: space-around;
}
.san .content .bottom ul li {
  text-align: center;
  cursor: pointer;
}
.san .content .bottom ul li img {
  width: 105px;
}
.san .content .bottom ul li h5 {
  font-size: 24px;
  color: #333;
  margin: 5px 0;
}
.san .content .bottom ul li p {
  font-size: 18px;
  color: #666;
}
.support {
  margin-bottom: 100px;
}
.support .content {
  margin-top: 30px;
}
.support .content ul {
  display: flex;
  justify-content: space-between;
}
.support .content ul li {
  width: 338px;
  height: 486px;
  background-color: #fff;
  box-shadow: 0 0 10px #f6f6f6;
  border-radius: 0 0 0 40px;
  text-align: center;
}
.support .content ul li .image {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.support .content ul li h4 {
  font-size: 30px;
  color: #333;
  line-height: 30px;
}
.support .content ul li p {
  font-size: 24px;
  color: #ed7b00;
  margin: 20px 0 30px;
}
.support .content ul li .more {
  width: 226px;
  margin: 0 auto;
}
.support .content ul li:hover {
  background-color: #2566e1;
  color: #fff;
}
.support .content ul li:hover h4 {
  color: #fff;
}
.support .content ul li:hover p {
  color: #fff;
}
.support .content ul li:hover .more {
  background-color: #fff;
  color: #2566e1;
}
.footer {
  height: 830px;
  background: url(../images/bg3.jpg) no-repeat top center;
  background-size: cover;
  padding-top: 130px;
}
.footer .form {
  width: 480px;
  height: 500px;
  background-color: rgba(255, 255, 255, 0.8);
  padding: 0 50px;
  margin: auto;
}
.footer .form h4 {
  line-height: 150px;
  font-size: 26px;
  color: #555;
  text-align: center;
}
.footer .form .item {
  border-bottom: 1px solid #ccc;
  margin-bottom: 15px;
  padding-bottom: 5px;
  line-height: 30px;
}
.footer .form .item label {
  font-size: 20px;
  color: #333;
  margin-right: 10px;
  line-height: 30px;
}
.footer .form .item input {
  background-color: rgba(255, 255, 255, 0);
  font-size: 20px;
  color: #333;
  line-height: 30px;
}
.footer .form p {
  font-size: 16px;
  color: #666;
}
.footer .form .btn {
  width: 100%;
  line-height: 55px;
  text-align: center;
  font-size: 20px;
  color: #fff;
  margin-top: 40px;
  background-color: #327cf4;
}