.course_con {
	box-sizing: border-box;
	width: 100%;
	display: flex;
}
ul.tabs {
	/* width: 220px; */
	margin-right: 30px;
}

ul.tabs .title {
  font-size: 20px;
  color: #1b1b1b;
}

ul.tabs li {
	overflow: hidden;
	position: relative;
	cursor: pointer;
	font-size: 18px;
	padding-bottom: 18px;
	margin-bottom: 15px;
}

ul.tabs li.active {
	color: #1e62ec;
}

ul.tabs li::after {
  content: "";
  width: 100%;
  height: 3px;
  background: #fff;
  border-radius: 2px;
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%)
}

ul.tabs li.active::after {
  content: "";
  width: 100%;
  height: 3px;
  background: #1e62ec;
  border-radius: 2px;
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%)
}

ul.tabs li span {
  margin-right: 10px;
  font-size: 16px;
  color: #575757;
}

.tab_container {
	flex: 1;
	width: 100%;
	padding: 30px 25px;
	background: #fff;
}

.tab_content {
	display: none;
}

.tab_content .toptxt h3 {
	height: 34px;
	font-size: 24px;
	line-height: 34px;
	font-weight: bold;
	margin-bottom: 18px;
  padding-left: 44px;
  background-repeat: no-repeat;
  background-position: left center;
  background-size: 34px auto;
}

.tab_content .toptxt h3.icon01 {
  background-image: url("../images/yewu-icon04.png");
}

.tab_content .toptxt h3.icon02 {
  background-image: url("../images/yewu-icon02.png");
}

.tab_content .toptxt h3.icon03 {
  background-image: url("../images/yewu-icon03.png");
}

.tab_content .toptxt h3.icon04 {
  background-image: url("../images/yewu-icon01.png");
}

.tab_content .toptxt p {
  font-size: 18px;
  line-height: 30px;
  color: #666;
}

.tab_content .btmbox {
  margin-top: 25px;
}

.tab_content .btmbox li {
  /* margin-bottom: 15px; */
}

.tab_content .btmbox li h4 {
  font-size: 20px;
  font-weight: bold;
	margin-bottom: 14px;
}
.tab_content .btmbox li p {
  font-size: 18px;
}

.tab_content .btmbox .zhuantiban .list ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  width: 100%;
}
.tab_content .btmbox .zhuantiban .list li {
  width: 31%;
  padding: 30px 0;
  padding-left: 30px;
  position: relative;
  background: #479bff;
  background: linear-gradient(-140deg, #0074ff 0%, #479bff 100%);
  background-size: cover;
}
.tab_content .btmbox .zhuantiban .list li h5 {
  font-weight: bold;
  font-size: 20px;
  color: #fff;
  margin-bottom: 10px;
}
.tab_content .btmbox .zhuantiban .list li span {
  font-weight: normal;
  font-size: 16px;
  color: #fff;
}



/* .tab_content .btmbox .zhuantiban .list li::before {
  content: "";
  width: 80px;
  height: 100%;
  background-image: url("../images/yewu-zhuantiban-list1.png");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 50px auto;
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
} */

.tab_content .btmbox .zhuantiban .list li::after {
  content: "";
  width: 300px;
  height: 300px;
  background-image: url("../images/yewu-zhuantiban-BG.png");
  background-repeat: no-repeat;
  background-position: top right;
  background-size: 300px;
  transform: rotate(-45deg);
  position: absolute;
  left: 50%;
  top: 23%;
  opacity: 0.5;
}


/**/
ul.subPart {
  padding: 0;
}

.subPart li {
  list-style: none;
}

.subPart li a {
  display: block;
  margin-right: 10px;
  padding: 10px 15px;
  border-radius: 6px;
  background: #fafafa;
  font-size: 18px;
  text-decoration: none;
  cursor: pointer;
}

.subPart li a:hover {
  color: inherit;
}

.subPart li a.active {
  background: #1e62ec;
  color: #fff;
}

.subPart .playCon {
  display: none;
  float: left;
  width: 100%;
  margin-top: 16px;
  background: #fafafa;
  overflow: hidden;
  padding: 18px 28px;
}

.no-js .subPart .playCon {
  display: block;
}

.subPart .playCon .list {
  display: flex;
  margin-bottom: 14px;
}
.subPart .playCon .list:last-child {
  margin-bottom: 0;
}

.subPart .playCon .list span {
  flex: 0 0 100px;
  font-size: 18px;
  font-weight: bold;
  color: #1b1b1b;
}

.subPart section .list p {
  flex: 1;
  font-size: 18px;
  color: #575757;
}

.subPart li ul li a {
  padding: 10px 25px;
}

.subPart {
  position: relative;
  border: none;
}

.subPart li {
  display: inline;
}

.subPart li a {
  display: inline-block;
}


/**/
.timeline {
    width: 100%;
    margin: auto;
}

.stepper {
    position: relative;
    display: flex;
    justify-content: left;
}

.stepper .step {
    position: relative;
    /* width: 100%; */
    cursor: pointer;
    padding: 0 20px;
    z-index: 2;
}
.stepper .step:last-child {
    margin-right: 0;
}


@media(min-width: 530px) {
    .stepper .step {
        /* width: 100%; */
    }
}

.step-title {
    --timeline-dot-dimensions: 11px;
    --extra-offset-fox-pixelperfect: -1px;
    position: relative;
    display: none;
    padding-top: 30px;
    margin-bottom: 0;
    text-align: center;
    /* border-top: 3px solid #ccc; */
    background: #fafafa;
    font-size: 18px;
    padding: 10px 15px;
    border-radius: 6px;
}

@media(min-width: 700px) {
    .step-title {
        display: block;
    }
}

/* this elements generates in JS */
.timeline__step-active-marker {
    --slide-pos-y: none;
    --slide-pos-x: none;
    --slide-width: auto;
    display: none;
    position: absolute;
    left: 0;
    /* top: var(--slide-pos-y); */
    top: 50%;
    transform: translateY(-50%);
    width: var(--slide-width);
    height: 3px;
    transform: translateX(var(--slide-pos-x));
    background: #1e62ec;
    z-index: 1;
}

@media(min-width: 700px) {
    .timeline__step-active-marker {
        display: block;
    }
}

.timeline__step.is-active {
    cursor: default;
}

.step.is-active .step-title {
    font-weight: bold;
    background: #1e62ec;
    color: #fff;
}

.step.is-active .step-title:before {
    transition: background-color 0.2s linear 0s;
    background-color: #FC00FF;
    border-color: #FC00FF;
}

.step.is-active .timeline__step-title:after {
    transform: translate(-50%) scale(1);
    transition: transform 0.2s linear 0s;
    background-image: linear-gradient(122deg, #00DBDE 0%, #FC00FF 100%);
    opacity: .35;
}

.slides {
    position: relative;
    margin: auto;
    background-color: #fafafa;
}

.slide {
    display: none;
    margin-top: 16px;
    padding: 18px 20px;
    font-size: 18px;
}

.slide.is-active {
    display: block;
}


.timeline__step-active-marker {
  left: 0 !important;
  --slide-pos-x: 0px !important;
  transition: 0.3s;
}

.item1.is-active+div+div+div+div.timeline__step-active-marker {
  width: 106px !important;
}

.item2.is-active+div+div+div.timeline__step-active-marker {
  width: 212px !important;
}

.item3.is-active+div+div.timeline__step-active-marker {
  width: 318px !important;
}

.item4.is-active+div.timeline__step-active-marker {
  width: 460px !important;
}


@media only screen and (max-width: 767px) {
	.course_con {
    flex-wrap: wrap;
  }
  ul.tabs {
    width: 100%;
    margin-right: 0;
    margin-bottom: 20px;
    padding-bottom: 8px;
    overflow-x: scroll;
	  -webkit-overflow-scrolling: touch;
    white-space: nowrap;
	  scroll-behavior: smooth;
	  scrollbar-gutter: stable;
  }
  ul.tabs::-webkit-scrollbar {
    width: auto;
    height: 2px;
  }
  ul.tabs::-webkit-scrollbar-track {
    background: #f0f0f0;
  }
	ul.tabs li {
		margin-right: 14px;
		font-size: 16px;
    display: inline-block;
    padding-bottom: 0;
    margin-bottom: 0;
	}
  ul.tabs li:last-child {
    margin-right: 0;
  }
  ul.tabs li::after {
    display: none;
  }
  ul.tabs li span {
    margin-right: 6px;
  }

  .tab_container {
    padding: 10px 10px;
  }

  .tab_content .toptxt h3 {
    font-size: 20px;
    height: 24px;
    line-height: 24px;
    margin-bottom: 14px;
    padding-left: 30px;
    background-size: 24px auto;
  }
  .tab_content .toptxt p {
    font-size: 14px;
    line-height: 22px;
  }

  .tab_content .btmbox {
    margin-top: 15px;
  }
  .subPart li a {
    margin-right: 10px;
    padding: 5px 8px;
    font-size: 15px;
  }
  .subPart .playCon {
    margin-top: 12px;
    padding: 10px 12px;
  }
  .subPart .playCon .list {
    margin-bottom: 10px;
  }
  .subPart .playCon .list span {
    font-size: 14px;
    flex: 0 0 70px;
  }
  .tab_content .btmbox li p {
    font-size: 14px;
  }

  .i-yewu .qydzhfw .sceneBox li {
    width: 48%;
    padding: 8px 10px;
  }
  .i-yewu .qydzhfw .sceneBox li p {
    font-size: 16px;
  }
  .i-yewu .qydzhfw .sceneBox li span {
    font-size: 14px;
  }
}