body {
  background: rgba(233, 244, 255, 0.88);
}

@font-face {
  font-family: sy-hei-med;
  src: url("../font/Source-Han-Sans-medium.woff2");
}
@font-face {
  font-family: DIN-Bold;
  src: url("../../../../assets/font/D-DIN-Bold.woff");
}
#header {
  position: absolute;
  z-index: 1000;
  top: 0;
  left: 0;
  right: 0;
}

.page-container {
  min-height: 100vh;
  position: relative;
}

.banner-section {
  position: relative;
  height: 800px;
  overflow: hidden;
}
.banner-section .swiper-container {
  width: 100%;
  height: 100%;
}
.banner-section .swiper-container .swiper-slide {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.banner-section .swiper-container .swiper-slide .el-image {
  border-radius: 0 0 80px 80px;
}
.banner-section .swiper-container .swiper-slide img {
  border-radius: 0 0 80px 80px;
}
.banner-section .swiper-container .swiper-pagination {
  bottom: 0;
  width: 447px;
  height: 63px;
  left: 50%;
  transform: translateX(-50%);
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
}
.banner-section .swiper-container .swiper-pagination:before {
  content: "";
  display: block;
  background: url("../images/bg-slide.png") no-repeat center;
  background-size: 100% 100%;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: -1px;
  z-index: 1;
}
.banner-section .swiper-container .swiper-pagination .swiper-pagination-switch {
  width: 18px;
  height: 18px;
  background: url("../images/bg-pagination.png") no-repeat center;
  background-size: 100% 100%;
  opacity: 1;
  margin: 0 8px;
  transition: all 0.3s;
  z-index: 3;
  position: relative;
}
.banner-section .swiper-container .swiper-pagination .swiper-pagination-switch.swiper-active-switch {
  background: url("../images/bg-pagination-active.png") no-repeat center;
  background-size: 100% 100%;
  transform: scale(1.2);
}

.main-content-box1 {
  background: url("../images/bg1.png") no-repeat center top;
  background-size: cover;
  padding: 80px 0;
}

.container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}
.section-header .title-box {
  position: relative;
}
.section-header .title-box:before {
  content: "";
  background: url("../images/title-mark.png") no-repeat center;
  background-size: 100% 100%;
  display: block;
  width: 94px;
  height: 67px;
  position: absolute;
  left: -40px;
  top: -17px;
}
.section-header .title-box h2 {
  font-size: 42px;
  font-weight: bold;
  color: #333;
  line-height: 59px;
  margin: 0;
}
.section-header .title-box h2:after {
  content: "";
  display: block;
  height: 4px;
  width: 428px;
  background: url("../images/title-bder.png") no-repeat center;
  background-size: 100%;
  margin: 5px 0;
}
.section-header .title-box .en {
  font-size: 14px;
  line-height: 20px;
  color: rgba(1, 126, 219, 0.5);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.section-header .more-link-style1 {
  width: 104px;
  height: 48px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  box-sizing: border-box;
  border-radius: 34px;
  font-size: 18px;
  background: #017DDB;
  color: #fff;
  line-height: 42px;
  text-align: center;
  margin-left: 40px;
}
.section-header .more-link-style1 i {
  font-size: 14px;
}
.section-header .types-box {
  height: 48px;
  padding: 4px;
  border-radius: 48px;
  background: #fff;
  box-sizing: border-box;
}
.section-header .types-box span {
  display: inline-block;
  padding: 0 24px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  font-size: 18px;
  color: rgba(0, 0, 0, 0.8);
  border-radius: 40px;
  cursor: pointer;
}
.section-header .types-box span.current {
  background: linear-gradient(90deg, #04CDFF 0%, #0C96FF 100%);
  color: #fff;
  font-weight: 500;
}
.section-header.style-white .title-box:before {
  content: "";
  background: url("../images/title-mark2.png") no-repeat center;
  background-size: 100% 100%;
}
.section-header.style-white .title-box h2 {
  color: #fff;
}
.section-header.style-white .title-box h2:after {
  background: url("../images/title-bder2.png") no-repeat center;
  background-size: 100%;
}
.section-header.style-white .title-box .en {
  color: rgba(255, 255, 255, 0.5);
}
.section-header.style-white .more-link-style1 {
  background: #fff;
  border-color: #fff;
  color: #017DDB;
}
.section-header.style-white .types-box {
  background: #E7F2FB;
}

.recommended-courses-section {
  margin-bottom: 100px;
}
.recommended-courses-section .tabs-navigation .tab {
  display: inline-block;
  vertical-align: top;
  height: 42px;
  line-height: 40px;
  box-sizing: border-box;
  padding: 0 24px;
  border: 1px solid rgba(1, 125, 219, 0.4);
  background: rgba(255, 255, 255, 0.93);
  color: rgba(0, 0, 0, 0.6);
  cursor: pointer;
  font-size: 18px;
  border-radius: 22px;
  margin-right: 20px;
}
.recommended-courses-section .tabs-navigation .tab:hover, .recommended-courses-section .tabs-navigation .tab.active {
  background: #017DDB;
  color: #ffffff;
  border-color: #0164AF;
}
.recommended-courses-section .tabs-navigation .more-btn {
  color: #017DDB;
  font-size: 15px;
  line-height: 42px;
}
.recommended-courses-section .tabs-navigation .more-btn .icon-arrow {
  font-size: 12px;
  margin-left: 4px;
}
.recommended-courses-section .courses-content {
  display: flex;
  box-shadow: 0px 4px 20px 0px rgba(19, 37, 81, 0.06);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.9);
}
.recommended-courses-section .courses-content .sidebar-nav {
  width: 170px;
  flex-shrink: 0;
  border-right: 1px solid rgba(1, 125, 219, 0.2);
}
.recommended-courses-section .courses-content .sidebar-nav ul {
  padding: 20px;
}
.recommended-courses-section .courses-content .sidebar-nav ul .nav-item {
  border-radius: 10px;
  height: 127px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  margin-bottom: 10px;
}
.recommended-courses-section .courses-content .sidebar-nav ul .nav-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
}
.recommended-courses-section .courses-content .sidebar-nav ul .nav-item:hover, .recommended-courses-section .courses-content .sidebar-nav ul .nav-item.active {
  background: linear-gradient(315.78deg, #0067B5 -1.49%, #017DDB 100.13%);
  color: #ffffff;
}
.recommended-courses-section .courses-content .sidebar-nav ul .nav-item:hover .el-image.active-img, .recommended-courses-section .courses-content .sidebar-nav ul .nav-item.active .el-image.active-img {
  display: block;
}
.recommended-courses-section .courses-content .sidebar-nav ul .nav-item:hover .el-image.def, .recommended-courses-section .courses-content .sidebar-nav ul .nav-item.active .el-image.def {
  display: none;
}
.recommended-courses-section .courses-content .sidebar-nav ul .nav-item:hover .nav-name, .recommended-courses-section .courses-content .sidebar-nav ul .nav-item.active .nav-name {
  color: #fff;
}
.recommended-courses-section .courses-content .sidebar-nav ul .nav-item .el-image.def {
  display: block;
}
.recommended-courses-section .courses-content .sidebar-nav ul .nav-item .el-image.active-img {
  display: none;
}
.recommended-courses-section .courses-content .sidebar-nav ul .nav-item .nav-name {
  font-size: 20px;
  color: #017DDB;
  font-weight: 500;
  margin-top: 10px;
  font-family: sy-hei-med;
}
.recommended-courses-section .courses-content .right-box {
  flex: 1;
  padding: 25px 30px 25px 24px;
}
.recommended-courses-section .courses-content .course-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 24px;
}
.recommended-courses-section .courses-content .course-grid .course-card {
  border-radius: 15px;
  overflow: hidden;
  transition: transform 0.3s;
  padding: 8px 8px 16px;
  border: 1px solid #E9E9E9;
}
.recommended-courses-section .courses-content .course-grid .course-card:hover {
  transform: translateY(-4px);
  border-color: #017DDB;
}
.recommended-courses-section .courses-content .course-grid .course-card .card-img-wrapper {
  position: relative;
  height: 182px;
  border-radius: 10px;
  overflow: hidden;
}
.recommended-courses-section .courses-content .course-grid .course-card .card-img-wrapper .el-image {
  width: 100%;
  height: 100%;
}
.recommended-courses-section .courses-content .course-grid .course-card .card-img-wrapper .btm-box {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.8);
  padding: 11px 12px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
}
.recommended-courses-section .courses-content .course-grid .course-card .card-img-wrapper .btm-box .title {
  font-size: 16px;
  color: #fff;
  flex: 1;
}
.recommended-courses-section .courses-content .course-grid .course-card .card-img-wrapper .btm-box .enter-btn {
  background: #1A75BB;
  color: #ffffff;
  padding: 0px 15px;
  border-radius: 20px;
  font-size: 14px;
  height: 24px;
  line-height: 24px;
  cursor: pointer;
  border: none;
  margin-left: 16px;
}
.recommended-courses-section .courses-content .course-grid .course-card .card-info {
  padding: 15px 8px 0;
}
.recommended-courses-section .courses-content .course-grid .course-card .card-info .details span {
  display: inline-block;
  vertical-align: top;
  height: 28px;
  line-height: 28px;
  padding: 0 14px;
  border-radius: 28px;
  background: rgb(229, 240, 247);
  font-size: 14px;
  color: #00528F;
  margin-right: 8px;
}
.recommended-courses-section .courses-content .course-grid .course-card .card-info .meta {
  display: flex;
  justify-content: space-between;
  font-size: 16px;
  color: rgba(0, 0, 0, 0.6);
  margin-top: 15px;
}
.recommended-courses-section .courses-content .course-grid .course-card .card-info .meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.recommended-courses-section .courses-content .course-grid .course-card .card-info .meta span i {
  font-size: 13px;
}

.teaching-resources-section .resource-cards-wrapper {
  display: flex;
  gap: 58px;
}
.teaching-resources-section .resource-cards-wrapper .resource-card {
  position: relative;
  flex: 1;
  min-width: 0;
}
.teaching-resources-section .resource-cards-wrapper .resource-card > .bg {
  position: absolute;
  top: 16px;
  left: 20px;
  width: 100%;
  height: 100%;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.58);
}
.teaching-resources-section .resource-cards-wrapper .resource-card .content-box {
  background: rgb(255, 255, 255);
  border-radius: 24px;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  padding: 26px;
  border: 4px solid #fff;
}
.teaching-resources-section .resource-cards-wrapper .resource-card .new-tag {
  position: absolute;
  top: 0px;
  left: 0px;
  background: #5AD031;
  color: #ffffff;
  padding: 0 18px;
  height: 40px;
  line-height: 35px;
  border-radius: 20px 0 12px 0;
  border-top: 5px solid rgba(255, 255, 255, 0.6);
  border-left: 5px solid rgba(255, 255, 255, 0.6);
  font-size: 18px;
  font-weight: 600;
  z-index: 2;
  box-sizing: border-box;
}
.teaching-resources-section .resource-cards-wrapper .resource-card .card-content {
  display: flex;
  align-items: center;
}
.teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-img {
  width: 246px;
  height: 230px;
  box-sizing: border-box;
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  flex-shrink: 0;
}
.teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-img .el-image {
  width: 100%;
  height: 100%;
}
.teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-info {
  flex: 1;
  margin-left: 24px;
  min-width: 0;
}
.teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-info h3 {
  font-size: 24px;
  font-weight: bold;
  color: #333;
  margin-bottom: 9px;
  line-height: 1.4;
}
.teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-info .description {
  font-size: 16px;
  color: rgba(0, 0, 0, 0.6);
  margin: 0 0 26px 0;
  line-height: 1.75 !important;
}
.teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-info .meta {
  font-size: 16px;
  color: rgba(0, 0, 0, 0.4);
  margin-top: 12px;
}
.teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-info .meta i {
  font-size: 18px;
  position: relative;
  top: 2px;
}

.main-content-box2 {
  background: url("../images/bg2.png") no-repeat center top;
  background-size: cover;
  padding: 90px 0 66px;
}

.ranking-section {
  margin-bottom: 40px;
}
.ranking-section .ranking-content .ranking-columns {
  display: flex;
  gap: 24px;
}
.ranking-section .ranking-content .ranking-columns .ranking-column {
  flex: 1;
  background: #fff;
  border-radius: 20px;
  padding: 20px 15px 15px;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #EEEEEE;
  padding-bottom: 7px;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .column-header h3 {
  font-size: 22px;
  font-weight: bold;
  color: #131B26;
  line-height: 1;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .column-header h3:after {
  content: "";
  display: block;
  width: 166px;
  height: 4px;
  background: url("../images/title-bder.png") no-repeat center top;
  background-size: 100%;
  margin-top: 10px;
  margin-bottom: 2px;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .column-header .en {
  font-size: 12px;
  color: rgba(1, 126, 219, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 14px;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .column-header .more-link-style2 {
  display: flex;
  align-items: center;
  gap: 2px;
  color: #017DDB;
  text-decoration: none;
  font-size: 18px;
  font-weight: 500;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .column-header .more-link-style2 i {
  font-size: 14px;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list {
  margin-top: 15px;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item {
  display: flex;
  align-items: center;
  padding: 15px 12px;
  position: relative;
  border-radius: 6px;
  margin-bottom: 10px;
  background: linear-gradient(270deg, rgba(178, 191, 207, 0) 0%, rgba(215, 224, 236, 0.2) 100.28%);
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item:last-child {
  margin-bottom: 0;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item:nth-of-type(1) {
  background: linear-gradient(270deg, rgba(242, 197, 73, 0) 0%, rgba(242, 197, 73, 0.091) 100.28%);
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item:nth-of-type(2) {
  background: linear-gradient(270deg, rgba(230, 87, 29, 0) 0%, rgba(230, 87, 29, 0.07) 100.28%);
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item:nth-of-type(2) {
  background: linear-gradient(270deg, rgba(73, 110, 242, 0) 0%, rgba(73, 120, 242, 0.091) 100.28%);
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .rank-icon {
  width: 30px;
  height: 30px;
  margin-right: 16px;
  position: relative;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .rank-icon .el-image {
  width: 100%;
  max-height: 100%;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .rank-icon .rank-bg {
  position: relative;
  width: 100%;
  height: 100%;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .rank-icon .rank-bg .el-image {
  width: 100%;
  height: 100%;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .rank-icon .rank-bg .rank-number {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #627790;
  font-size: 12px;
  line-height: 30px;
  font-weight: bold;
  font-family: DIN-Bold;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .teacher-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  overflow: hidden;
  margin-right: 8px;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .teacher-avatar .el-image {
  width: 100%;
  height: 100%;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .item-content {
  flex: 1;
  min-width: 0;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .item-content h4 {
  font-size: 18px;
  color: #141E31;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .item-score {
  font-size: 16px;
  font-weight: bold;
  color: #141E31;
  font-family: DIN-Bold;
  margin-left: 12px;
}

.analysis-cards-section .analysis-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px 26px;
}
.analysis-cards-section .analysis-cards-grid .analysis-card {
  position: relative;
  height: 150px;
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.3s;
  background: url("../images/bg-item-jxzsq.png") no-repeat center;
  background-size: 100% 100%;
  display: flex;
  align-items: center;
  padding: 0 57px;
  box-sizing: border-box;
  cursor: pointer;
}
.analysis-cards-section .analysis-cards-grid .analysis-card:hover {
  transform: translateY(-4px);
}
.analysis-cards-section .analysis-cards-grid .analysis-card .card-icon {
  width: 69px;
  height: 69px;
  border-radius: 10px;
  margin-right: 35px;
  background: #0164AF;
}
.analysis-cards-section .analysis-cards-grid .analysis-card .card-icon .el-image {
  width: 100%;
  height: 100%;
  border-radius: 10px;
}
.analysis-cards-section .analysis-cards-grid .analysis-card .card-info {
  flex: 1;
}
.analysis-cards-section .analysis-cards-grid .analysis-card .card-info h3 {
  font-size: 28px;
  font-weight: bold;
  color: #333;
  line-height: 39px;
  margin: 0 0 5px 0;
}
.analysis-cards-section .analysis-cards-grid .analysis-card .card-info .en {
  font-size: 18px;
  color: rgba(0, 0, 0, 0.6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 300;
}
.analysis-cards-section .analysis-cards-grid .analysis-card .card-arrow i {
  font-size: 26px;
  color: #017DDB;
}

.main-content-box3 {
  padding: 90px 0 100px;
  background: url("../images/bg3.png") no-repeat center top;
  background-size: cover;
}

.excellent-materials-section .section-header {
  margin-bottom: 70px;
}
.excellent-materials-section .materials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 50px;
}
.excellent-materials-section .materials-grid .material-card {
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
  cursor: pointer;
}
.excellent-materials-section .materials-grid .material-card:nth-of-type(2) {
  position: relative;
  top: -68px;
}
.excellent-materials-section .materials-grid .material-card .card-info {
  flex: 1;
  min-width: 0;
}
.excellent-materials-section .materials-grid .material-card .card-info h3 {
  font-size: 24px;
  font-weight: 500;
  color: #333;
  margin: 0 0 13px 0;
  line-height: 24px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.excellent-materials-section .materials-grid .material-card .card-info .description {
  font-size: 16px;
  color: rgba(0, 0, 0, 0.6);
  line-height: 28px;
  margin: 0 0 13px 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.excellent-materials-section .materials-grid .material-card .card-info .author {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 16px;
  color: rgba(0, 0, 0, 0.4);
}
.excellent-materials-section .materials-grid .material-card .card-info .author i {
  font-size: 14px;
  color: #666666;
}
.excellent-materials-section .materials-grid .material-card .card-item:hover .card-info {
  color: #fff;
}
.excellent-materials-section .materials-grid .material-card .card-item:hover .card-info h3 {
  color: #fff;
}
.excellent-materials-section .materials-grid .material-card .card-item:hover .card-info .description {
  color: #fff;
}
.excellent-materials-section .materials-grid .material-card .card-item:hover .card-info .author {
  color: rgba(255, 255, 255, 0.8);
}
.excellent-materials-section .materials-grid .material-card .card-item:hover .card-info .author i {
  color: rgba(255, 255, 255, 0.8);
}
.excellent-materials-section .materials-grid .material-card .card-top {
  background: url("../images/yxjc-bg1.png") no-repeat top left;
  background-size: 100% 100%;
  display: flex;
  align-items: center;
  padding: 34px 38px 35px 30px;
  box-sizing: border-box;
}
.excellent-materials-section .materials-grid .material-card .card-top:hover {
  background: url("../images/yxjc-bg12.png") no-repeat top left;
  background-size: 100% 100%;
}
.excellent-materials-section .materials-grid .material-card .card-top .card-img {
  width: 171px;
  height: 216px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  margin-right: 36px;
}
.excellent-materials-section .materials-grid .material-card .card-top .card-img .el-image {
  width: 100%;
  height: 100%;
  border-radius: 12px;
  box-sizing: border-box;
}
.excellent-materials-section .materials-grid .material-card .card-bottom {
  background: url("../images/yxjc-bg2.png") no-repeat center;
  background-size: 100% 100%;
  display: flex;
  align-items: center;
  padding: 40px 30px 27px 32px;
}
.excellent-materials-section .materials-grid .material-card .card-bottom:hover {
  background: url("../images/yxjc-bg22.png") no-repeat center;
  background-size: 100% 100%;
}
.excellent-materials-section .materials-grid .material-card .card-bottom .card-img {
  width: 176px;
  height: 222px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  margin-left: 36px;
}
.excellent-materials-section .materials-grid .material-card .card-bottom .card-img .el-image {
  width: 100%;
  height: 100%;
  border-radius: 12px;
}

.null-data-box {
  padding: 100px 0;
  text-align: center;
  width: 100%;
}
.null-data-box img {
  width: 180px;
}
.null-data-box .tip {
  font-size: 15px;
  color: rgba(0, 0, 0, 0.4);
  margin-top: 16px;
}

@media only screen and (max-width: 927px) {
  .page-container {
    min-width: 100%;
    width: 100%;
  }
  .banner-section {
    height: 15.75rem;
  }
  .banner-section .swiper-container .swiper-slide .el-image {
    border-radius: 0 0 1.875rem 1.875rem;
  }
  .banner-section .swiper-container .swiper-slide img {
    border-radius: 0 0 1.875rem 1.875rem;
  }
  .banner-section .swiper-container .swiper-pagination {
    width: 9.5625rem;
    height: 1.6875rem;
  }
  .banner-section .swiper-container .swiper-pagination .swiper-pagination-switch {
    width: 0.4375rem;
    height: 0.4375rem;
    margin: 0 0.125rem;
  }
  .banner-section .swiper-container .swiper-pagination .swiper-pagination-switch.swiper-active-switch {
    width: 0.6875rem;
    height: 0.6875rem;
  }
  .container {
    width: 100%;
    padding: 0;
    max-width: 100%;
  }
  .section-header {
    margin-bottom: 1.625rem;
    padding-top: 0.3125rem;
    box-sizing: border-box;
  }
  .section-header .title-box {
    min-width: 0;
    padding-left: 1rem;
  }
  .section-header .title-box:before {
    width: 2.4375rem;
    height: 1.75rem;
    left: 0;
    top: -0.3125rem;
  }
  .section-header .title-box h2 {
    font-size: 1.25rem;
    line-height: 1.75rem;
  }
  .section-header .title-box h2:after {
    height: 0.125rem;
    width: 9.1875rem;
    margin-top: 0.125rem;
    margin-bottom: 0.125rem;
  }
  .section-header .title-box .en {
    font-size: 0.375rem;
    line-height: 1.2;
  }
  .section-header .more-link-style1 {
    width: 6.5rem;
    height: 2.5625rem;
    border-width: 0.1875rem;
    line-height: 2.1875rem;
    border-radius: 2.125rem;
    font-size: 1.125rem;
  }
  .main-content-box1 {
    padding: 0;
  }
  .main-content-box2 {
    padding: 2.5rem 1rem 1.875rem;
    background: #017DDB;
  }
  .main-content-box3 {
    padding: 1.875rem 1rem 1.875rem;
  }
  .app-show .section-header {
    padding: 0;
    margin-top: 1.625rem;
    margin-bottom: 0;
  }
  .app-show .section-header .more-link-style1 {
    margin: 0 auto;
  }
  .recommended-courses-section {
    margin-bottom: 0;
    padding: 1.875rem 1rem 1.875rem;
  }
  .recommended-courses-section .courses-content {
    flex-direction: column;
  }
  .recommended-courses-section .courses-content .sidebar-nav {
    width: 100%;
    padding: 0.75rem;
    box-sizing: border-box;
    border-bottom: 1px solid rgba(26, 85, 128, 0.1);
    border-right: none;
  }
  .recommended-courses-section .courses-content .sidebar-nav ul {
    display: flex;
    padding: 0;
  }
  .recommended-courses-section .courses-content .sidebar-nav ul .nav-item {
    white-space: nowrap;
    border-bottom: none;
    height: 5.375rem;
    margin-bottom: 0;
    border-radius: 0.625rem;
    flex: 1;
  }
  .recommended-courses-section .courses-content .sidebar-nav ul .nav-item:last-child {
    border-right: none;
  }
  .recommended-courses-section .courses-content .sidebar-nav ul .nav-item .el-image {
    width: 1.5rem !important;
    height: 1.5rem !important;
  }
  .recommended-courses-section .courses-content .sidebar-nav ul .nav-item .nav-name {
    font-size: 0.625rem;
    margin-top: 0.25rem;
    line-height: 0.875rem;
  }
  .recommended-courses-section .courses-content .right-box {
    padding: 0.75rem;
  }
  .recommended-courses-section .courses-content .right-box .tabs-navigation {
    display: flex;
    gap: 0.375rem;
  }
  .recommended-courses-section .courses-content .right-box .tabs-navigation .tab {
    flex: 1;
    height: 2rem;
    line-height: 1.875rem;
    font-size: 0.75rem;
    text-align: center;
    margin-right: 0;
    background: #EDF6FC;
  }
  .recommended-courses-section .courses-content .right-box .tabs-navigation .tab:not(.active):hover {
    background: #EDF6FC;
    color: rgba(0, 0, 0, 0.6);
  }
  .recommended-courses-section .courses-content .right-box .tabs-navigation .tab.active {
    background: #017DDB;
  }
  .recommended-courses-section .courses-content .right-box .tabs-navigation .more-btn {
    display: none;
  }
  .recommended-courses-section .courses-content .course-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    margin-top: 0.75rem;
  }
  .recommended-courses-section .courses-content .course-grid .course-card {
    padding: 0.25rem 0.25rem 0.6875rem;
    border-radius: 0.375rem;
  }
  .recommended-courses-section .courses-content .course-grid .course-card .card-img-wrapper {
    height: 6.375rem;
    border-radius: 0.375rem;
  }
  .recommended-courses-section .courses-content .course-grid .course-card .card-img-wrapper .el-image {
    border-radius: 0.375rem;
  }
  .recommended-courses-section .courses-content .course-grid .course-card .card-img-wrapper .btm-box {
    padding: 0.375rem 0.4375rem;
  }
  .recommended-courses-section .courses-content .course-grid .course-card .card-img-wrapper .btm-box .title {
    font-size: 0.625rem;
    line-height: 1;
  }
  .recommended-courses-section .courses-content .course-grid .course-card .card-img-wrapper .btm-box .enter-btn {
    margin-left: 0.5rem;
    height: 0.875rem;
    line-height: 0.875rem;
    padding: 0 0.5rem;
    font-size: 0.5rem;
    border-radius: 0.875rem;
  }
  .recommended-courses-section .courses-content .course-grid .course-card .card-info {
    padding: 0.5rem 0.125rem 0;
  }
  .recommended-courses-section .courses-content .course-grid .course-card .card-info .details span {
    padding: 0 0.5rem;
    height: 1.5rem;
    line-height: 1.5rem;
    margin-right: 0.3125rem;
    font-size: 0.75rem;
    border-radius: 1.5rem;
  }
  .recommended-courses-section .courses-content .course-grid .course-card .card-info .meta {
    margin-top: 0.5625rem;
    font-size: 0.75rem;
  }
  .recommended-courses-section .courses-content .course-grid .course-card .card-info .meta span i {
    font-size: 0.75rem;
  }
  .teaching-resources-section {
    padding: 0 1rem 1.875rem;
  }
  .teaching-resources-section .section-header {
    margin-bottom: 1.25rem;
  }
  .teaching-resources-section .section-header .r-box {
    display: none;
  }
  .teaching-resources-section .resource-cards-wrapper {
    display: block;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card {
    width: 100%;
    margin-bottom: 1.75rem;
    padding-right: 0.5625rem;
    box-sizing: border-box;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card .bg {
    right: 0;
    top: 1.5rem;
    left: 0.875rem;
    bottom: -0.75rem;
    border-radius: 0.75rem;
    width: auto;
    height: auto;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card .content-box {
    padding: 0;
    border-width: 0.125rem;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card .card-content {
    height: auto;
    padding: 0.9375rem 0.75rem 0.9375rem 0.75rem;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-img {
    width: 7.5rem;
    height: 9.25rem;
    border-radius: 0.625rem;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-img .new-tag {
    border-radius: 0.625rem 0 0.625rem 0;
    height: 1.375rem;
    line-height: 1.25rem;
    padding: 0 0.5rem;
    border-width: 0.125rem;
    font-size: 0.75rem;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-info {
    margin-left: 0.75rem;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-info h3 {
    font-size: 0.875rem;
    margin-bottom: 0.3125rem;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-info .description {
    font-size: 0.6875rem;
    line-height: 1.125rem;
    margin-bottom: 1.375rem;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-info .meta {
    margin-top: 0.5rem;
    font-size: 0.625rem;
    line-height: 0.75rem;
  }
  .teaching-resources-section .resource-cards-wrapper .resource-card .card-content .card-info .meta i {
    font-size: 0.75rem;
  }
  .ranking-section {
    margin-bottom: 1.25rem;
  }
  .ranking-section .ranking-content .ranking-columns {
    flex-direction: column;
    gap: 1.25rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column {
    padding: 1.25rem 0.9375rem 0.9375rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column .column-header {
    padding-bottom: 0.4375rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column .column-header h3 {
    font-size: 1.25rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column .column-header h3:after {
    width: 10.375rem;
    height: 0.25rem;
    margin-top: 0.625rem;
    margin-bottom: 0.25rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column .column-header .en {
    font-size: 0.625rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column .column-header .more-link-style2 {
    font-size: 1.125rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item {
    padding: 0.625rem 0.75rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .rank-icon {
    width: 1.75rem;
    max-height: 1.75rem;
    margin-right: 1.125rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .item-content h4 {
    font-size: 1rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .item-score {
    font-size: 1rem;
  }
  .ranking-section .ranking-content .ranking-columns .ranking-column .ranking-list .ranking-item .teacher-avatar {
    width: 2.5rem;
    height: 2.5rem;
    margin-right: 0.5rem;
  }
  .analysis-cards-section .analysis-cards-grid {
    display: block;
  }
  .analysis-cards-section .analysis-cards-grid .analysis-card {
    margin-bottom: 1.25rem;
    height: 7rem;
    padding: 0 2.5rem;
    border-radius: 0.625rem;
  }
  .analysis-cards-section .analysis-cards-grid .analysis-card:hover {
    transform: translateY(0);
  }
  .analysis-cards-section .analysis-cards-grid .analysis-card .card-icon {
    width: 3.25rem;
    height: 3.25rem;
    margin-right: 1.625rem;
  }
  .analysis-cards-section .analysis-cards-grid .analysis-card .card-info h3 {
    font-size: 1.25rem;
    line-height: 1.75rem;
    margin-bottom: 0.25rem;
  }
  .analysis-cards-section .analysis-cards-grid .analysis-card .card-info .en {
    font-size: 0.875rem;
    line-height: 0.875rem;
  }
  .analysis-cards-section .analysis-cards-grid .analysis-card .card-arrow i {
    font-size: 1.1875rem;
  }
  .excellent-materials-section .app-show .section-header {
    margin-bottom: 0;
  }
  .excellent-materials-section .section-header {
    flex-direction: column;
    align-items: start;
    margin-bottom: 1.25rem;
  }
  .excellent-materials-section .section-header .r-box {
    width: 100%;
  }
  .excellent-materials-section .section-header .types-box {
    width: 100%;
    margin-top: 1.25rem;
    height: 2.875rem;
    padding: 0.25rem;
    border-radius: 2.875rem;
    display: flex;
    align-items: center;
  }
  .excellent-materials-section .section-header .types-box span {
    flex: 1;
    height: 2.375rem;
    line-height: 2.375rem;
    padding: 0;
    font-size: 0.875rem;
  }
  .excellent-materials-section .filter-tabs {
    flex-wrap: wrap;
    gap: 8px;
  }
  .excellent-materials-section .filter-tabs .tab {
    margin-right: 8px;
    margin-bottom: 8px;
  }
  .excellent-materials-section .materials-grid {
    margin-top: 1.25rem;
    display: block;
  }
  .excellent-materials-section .materials-grid .material-card {
    width: 100%;
    border-radius: 0;
  }
  .excellent-materials-section .materials-grid .material-card:nth-of-type(2) {
    top: 0;
  }
  .excellent-materials-section .materials-grid .material-card .card-bottom,
  .excellent-materials-section .materials-grid .material-card .card-top {
    background: #fff;
    border-radius: 10px;
    border: 0.25rem solid rgba(124, 198, 253, 0.3);
    box-sizing: border-box;
    padding: 1.125rem 0.875rem;
    margin-bottom: 0.625rem;
  }
  .excellent-materials-section .materials-grid .material-card .card-bottom:hover,
  .excellent-materials-section .materials-grid .material-card .card-top:hover {
    border-color: rgba(124, 198, 253, 0.3);
    background: #006CBE;
  }
  .excellent-materials-section .materials-grid .material-card .card-bottom .card-img,
  .excellent-materials-section .materials-grid .material-card .card-top .card-img {
    width: 8.5rem;
    height: 6.125rem;
    border-radius: 0.625rem;
    margin-right: 1rem;
  }
  .excellent-materials-section .materials-grid .material-card .card-bottom .card-img .el-image,
  .excellent-materials-section .materials-grid .material-card .card-top .card-img .el-image {
    border-radius: 0.625rem;
  }
  .excellent-materials-section .materials-grid .material-card .card-bottom .card-info h3,
  .excellent-materials-section .materials-grid .material-card .card-top .card-info h3 {
    font-size: 0.875rem;
    line-height: 1.375rem;
    margin-bottom: 0.375rem;
  }
  .excellent-materials-section .materials-grid .material-card .card-bottom .card-info .description,
  .excellent-materials-section .materials-grid .material-card .card-top .card-info .description {
    font-size: 0.75rem;
    -webkit-line-clamp: 2;
    margin-bottom: 0.375rem;
  }
  .excellent-materials-section .materials-grid .material-card .card-bottom .card-info .author,
  .excellent-materials-section .materials-grid .material-card .card-top .card-info .author {
    font-size: 0.75rem;
    line-height: 1.4;
  }
  .null-data-box {
    padding: 3.75rem 0;
    text-align: center;
    width: 100%;
  }
  .null-data-box img {
    width: 6.25rem;
  }
  .null-data-box .tip {
    font-size: 0.875rem;
    color: rgba(0, 0, 0, 0.4);
    margin-top: 1rem;
  }
}

/*# sourceMappingURL=index.css.map */