.bs-hero {
  min-height: 720px;
  background: url(../images/b75ba2fc.png) center / 1920px 640px no-repeat;
  position: relative;
  overflow: hidden;
  padding-top: 70px;
}

.bs-hero .hero-bg {
  max-width: 1920px;
  margin: 0 auto;
  background-color: rgba(0, 0, 0, 0.2);
}

.bs-hero .hero-wrap {
  padding-top: 80px;
  position: relative;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  min-height: 610px;
  width: 1320px;
  margin: 0 auto;
}

.bs-hero .hero-label {
  display: inline-block;
  font-size: 20px;
  letter-spacing: 2px;
  color: #2ee55a;
  font-weight: bold;
  margin-bottom: 20px;
  text-shadow: 0px 4px 10px rgba(0, 63, 180, 0.2);
}

.bs-hero .hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.4;
  color: #fff;
  margin-bottom: 22px;
  text-shadow: 0px 4px 10px rgba(0, 63, 180, 0.2);
}

.bs-hero .hero-title .hero-green {
  color: #2ee55a;
  /* 绿色高亮 */
  text-shadow: 0px 4px 10px rgba(0, 63, 180, 0.2);
}

.bs-hero .hero-desc {
  margin-bottom: 58px;
  font-size: 24px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: #ffffff;
  line-height: 1.6;
  text-shadow: 0px 4px 10px rgba(0, 51, 104, 0.2);
}

.bs-hero .hero-cta {
  cursor: pointer;
  font-size: 22px;
  font-weight: 500;
  color: #ffffff;
  text-shadow: 0px 4px 10px rgba(0, 51, 104, 0.2);
}

.bs-hero .hero-cta img {
  width: 52px;
  height: 52px;
  -o-object-fit: contain;
  object-fit: contain;
  vertical-align: middle;
  margin-right: 20px;
}

.bs-menu-wrap {
  width: 1320px;
  margin: 0 auto;
}

.bs-menu-wrap .bs-menu {
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-flex-wrap: wrap;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
}

.bs-menu-wrap .bs-menu a {
  padding: 35px 0;
  font-size: 22px;
  color: rgba(25, 116, 237, 0.25098);
  margin-right: 120px;
}

.bs-menu-wrap .bs-menu a.active,
.bs-menu-wrap .bs-menu a:hover {
  position: relative;
  color: #1974ed;
  font-weight: bold;
}

.bs-menu-wrap .bs-menu a.active::after,
.bs-menu-wrap .bs-menu a:hover::after {
  position: absolute;
  content: "";
  left: 50%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
  bottom: 0;
  width: 101px;
  height: 4px;
  background: #1974ed;
}

.started {
  padding-top: 120px;
  padding-bottom: 300px;
  background: url(../images/9436d182.png) center bottom / 1920px 640px no-repeat;
}

.started .container {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
  width: 1320px;
  margin: 0 auto;
}

.started .container .left p {
  font-size: 20px;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.4);
  margin-bottom: 10px;
}

.started .container .left h2 {
  font-size: 42px;
  font-weight: bold;
  line-height: normal;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.9);
}

.started .container .left h2 span {
  color: #2ee55a;
}

.started .container .right {
  width: 660px;
}

.started .container .right p {
  font-size: 18px;
  font-weight: 500;
  line-height: 42px;
  text-align: right;
  letter-spacing: 0.02em;
  -webkit-font-feature-settings: "kern" on;
  font-feature-settings: "kern" on;
  color: rgba(0, 0, 0, 0.6);
}

.start {
  margin-bottom: 120px;
}

.start.bg {
  padding-bottom: 400px;
  margin-bottom: 0;
  background: url(../images/c24c498c.png) center bottom / 1920px 640px no-repeat;
}

.start .container {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
  width: 1320px;
  margin: 0 auto;
}

.start .container .left {
  width: 648px;
  margin-top: -54px;
}

.start .container .left.no {
  margin-top: 0;
}

.start .container .left span {
  font-size: 20px;
  font-weight: 500;
  line-height: normal;
  letter-spacing: 0.02em;
  color: #34a750;
}

.start .container .left h2 {
  margin-top: 10px;
  font-size: 38px;
  font-weight: bold;
  line-height: normal;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.9);
  margin-bottom: 50px;
}

.start .container .left h2.bottom {
  margin-bottom: 0;
}

.start .container .left p {
  font-family: Source Han Sans;
  font-size: 18px;
  font-weight: 500;
  line-height: normal;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.6);
  margin-bottom: 26px;
}

.start .container .left .green {
  color: #34a750;
  margin-top: 20px;
}

.start .container .right {
  width: 536px;
}

.start .container .right img {
  width: 100%;
  height: 100%;
  -o-object-fit: contain;
  object-fit: contain;
}

.start .container .right p {
  padding-top: 16px;
  text-align: right;
  font-size: 18px;
  font-weight: 500;
  line-height: normal;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.4);
}

.start .container .right.shadow {
  position: relative;
  font-size: 0;
}

.start .container .right.shadow p {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  border-radius: 0px 0px 24px 24px;
  background: -webkit-gradient(linear, left top, left bottom, from(rgba(0, 0, 0, 0)), color-stop(20%, rgba(0, 0, 0, 0.06275)), to(rgba(0, 0, 0, 0.4)));
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.06275) 20%, rgba(0, 0, 0, 0.4) 100%);
  font-size: 18px;
  font-weight: 500;
  line-height: normal;
  letter-spacing: 0.02em;
  color: #ffffff;
  padding: 94px 0px 30px;
  text-align: center;
}

.resource {
  background: url(../images/4ba913a8.png) center bottom / 1920px 320px no-repeat;
  height: 320px;
  margin-bottom: 130px;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
}

.resource .container {
  width: 1320px;
  margin: 0 auto;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
}

.resource .container .left p {
  font-size: 20px;
  font-weight: 500;
  line-height: normal;
  letter-spacing: 0.02em;
  color: #34a750;
  margin-top: -20px;
}

.resource .container .left h2 {
  margin-top: 10px;
  font-size: 46px;
  font-weight: bold;
  line-height: normal;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.9);
}

.resource .container .right {
  width: 656px;
}

.resource .container .right p {
  font-size: 20px;
  font-weight: 500;
  line-height: 1.6;
  text-align: right;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.6);
}

.class {
  background: url(../images/1fa8da53.png) center bottom / 1920px 640px no-repeat;
  padding: 50px 0 40px;
  margin-bottom: 120px;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
}

.class .container {
  width: 1320px;
  margin: 0 auto;
}

.class .container .top {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
}

.class .container .top h2 {
  font-size: 40px;
  font-weight: bold;
  line-height: normal;
  letter-spacing: 0.02em;
  background: -webkit-gradient(linear, right top, left top, from(#96f9fb), color-stop(50%, #94ccfa), to(#c9dffd));
  background: linear-gradient(270deg, #96f9fb 0%, #94ccfa 50%, #c9dffd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-fill-color: transparent;
}

.class .container .top p {
  font-size: 16px;
  font-weight: 500;
  line-height: 32px;
  text-align: right;
  letter-spacing: 0.02em;
  color: #ffffff;
}

.class .container ul {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
}

.class .container ul li {
  text-align: center;
}

.class .container ul li img {
  width: 128px;
  height: 128px;
  -o-object-fit: contain;
  object-fit: contain;
}

.class .container ul li b {
  display: block;
  font-size: 22px;
  font-weight: bold;
  line-height: normal;
  letter-spacing: 0.02em;
  color: #ffffff;
}

.class .container ul li span {
  display: block;
  font-size: 18px;
  font-weight: normal;
  line-height: normal;
  letter-spacing: 0.02em;
  color: #ffffff;
}

.class .container ul li p {
  width: 144px;
  padding-top: 20px;
  font-size: 16px;
  font-weight: normal;
  line-height: normal;
  text-align: center;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.6);
}

.class .container .tip {
  font-size: 16px;
  font-weight: normal;
  line-height: normal;
  text-align: center;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 80px;
  text-align: left;
}

.subject {
  padding-bottom: 110px;
}

.subject .container {
  width: 1320px;
  margin: 0 auto;
}

.subject .container h2 {
  font-family: Source Han Sans;
  font-size: 40px;
  font-weight: bold;
  line-height: normal;
  letter-spacing: 0em;
  color: rgba(0, 0, 0, 0.9);
  text-align: center;
}

.subject .container .tab {
  width: 1200px;
  margin: 40px auto 80px;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
}

.subject .container .tab span {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  width: 286px;
  height: 60px;
  border-radius: 99px;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  border: 1px solid rgba(37, 106, 242, 0.6);
  font-family: Source Han Sans;
  font-size: 22px;
  font-weight: 500;
  line-height: 32px;
  letter-spacing: 0em;
  color: rgba(37, 106, 242, 0.6);
  margin-right: 20px;
  cursor: pointer;
}

.subject .container .tab span:last-of-type {
  margin-right: 0;
}

.subject .container .tab span.active {
  background: -webkit-gradient(linear, left top, right top, from(#256af2), to(#29a4fd));
  background: linear-gradient(90deg, #256af2 0%, #29a4fd 100%);
  -webkit-box-shadow: 0px 4px 10px 0px rgba(37, 107, 242, 0.25);
  box-shadow: 0px 4px 10px 0px rgba(37, 107, 242, 0.25);
  border: none;
  color: #ffffff;
}

.subject .container .list ul {
  display: none;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -ms-flex-pack: justify;
  justify-content: space-between;
}

.subject .container .list ul li {
  margin-right: 24px;
  position: relative;
  width: 312px;
  height: 310px;
  border-radius: 12px;
  background: #ffffff;
  -webkit-box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.08);
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.08);
  text-align: center;
  padding-top: 30px;
}

.subject .container .list ul li:last-of-type {
  margin-right: 0;
}

.subject .container .list ul li b {
  position: absolute;
  top: 20px;
  left: 30px;
  font-size: 36px;
  font-weight: bold;
  line-height: normal;
  text-align: center;
  letter-spacing: 0.02em;
}

.subject .container .list ul li img {
  width: 120px;
  height: 120px;
  -o-object-fit: contain;
  object-fit: contain;
}

.subject .container .list ul li span {
  display: block;
  font-size: 22px;
  font-weight: 500;
  line-height: normal;
  letter-spacing: 0.02em;
  color: #000000;
  padding: 10px 0;
}

.subject .container .list ul li p {
  font-size: 18px;
  font-weight: normal;
  line-height: normal;
  text-align: center;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.6);
}

.subject .container .list ul li .arr {
  width: 42px;
  height: 42px;
  margin-top: 20px;
  border-radius: 50%;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  line-height: normal;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.6);
  margin: 20px auto 0;
}

.subject .container .list ul.avtive {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
}

.slogen {
  text-align: center;
  margin-top: 80px;
  padding-bottom: 185px;
  background: url(../images/b81245e2.png) center bottom / 1920px 520px no-repeat;
}

.slogen img {
  width: 52px;
  height: 52px;
  -o-object-fit: contain;
  object-fit: contain;
}

.slogen h2 {
  font-family: Source Han Sans;
  font-size: 46px;
  font-weight: bold;
  line-height: normal;
  text-align: center;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.9);
  padding-bottom: 10px;
  padding-top: 40px;
}

.slogen p {
  font-family: Source Han Sans;
  font-size: 22px;
  font-weight: 500;
  line-height: normal;
  text-align: center;
  letter-spacing: 0.02em;
  color: rgba(0, 0, 0, 0.6);
  padding-bottom: 20px;
}

/* ========== 滚动入场动画（与首页一致） ========== */
.animate-on-scroll {
  /* 左右交错 */
  /* 卡片列表交错 */
  /* Hero 区（整段入场） */
}

.animate-on-scroll>.container>.left,
.animate-on-scroll>.container>.right,
.animate-on-scroll>.container>.top,
.animate-on-scroll>.container ul li {
  opacity: 0;
  -webkit-transform: translateY(40px);
  transform: translateY(40px);
  -webkit-transition: opacity 0.8s ease-out, -webkit-transform 0.8s ease-out;
  transition: opacity 0.8s ease-out, -webkit-transform 0.8s ease-out;
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  transition: opacity 0.8s ease-out, transform 0.8s ease-out, -webkit-transform 0.8s ease-out;
}

.animate-on-scroll>.container>.left {
  -webkit-transition-delay: 0s;
  transition-delay: 0s;
}

.animate-on-scroll>.container>.right,
.animate-on-scroll>.container>.right.shadow {
  -webkit-transition-delay: 0.15s;
  transition-delay: 0.15s;
}

.animate-on-scroll>.container>.top {
  -webkit-transition-delay: 0s;
  transition-delay: 0s;
}

.animate-on-scroll>.container ul li {
  -webkit-transition-delay: calc(0 * 0.1s);
  transition-delay: calc(0 * 0.1s);
  -webkit-transition-delay: calc(var(--i, 0) * 0.1s);
  transition-delay: calc(var(--i, 0) * 0.1s);
}

.animate-on-scroll>.container ul li:nth-child(1) {
  --i: 1;
}

.animate-on-scroll>.container ul li:nth-child(2) {
  --i: 2;
}

.animate-on-scroll>.container ul li:nth-child(3) {
  --i: 3;
}

.animate-on-scroll>.container ul li:nth-child(4) {
  --i: 4;
}

.animate-on-scroll>.container ul li:nth-child(5) {
  --i: 5;
}

.animate-on-scroll.bs-hero {
  opacity: 0;
  -webkit-transform: translateY(30px);
  transform: translateY(30px);
  -webkit-transition: opacity 1s ease-out, -webkit-transform 1s ease-out;
  transition: opacity 1s ease-out, -webkit-transform 1s ease-out;
  transition: opacity 1s ease-out, transform 1s ease-out;
  transition: opacity 1s ease-out, transform 1s ease-out, -webkit-transform 1s ease-out;
}

.animate-on-scroll.is-visible>.container>.left,
.animate-on-scroll.is-visible>.container>.right,
.animate-on-scroll.is-visible>.container>.top,
.animate-on-scroll.is-visible>.container ul li {
  opacity: 1;
  -webkit-transform: translateY(0);
  transform: translateY(0);
}

.animate-on-scroll.is-visible.bs-hero {
  opacity: 1;
  -webkit-transform: translateY(0);
  transform: translateY(0);
}