@media screen and (min-width: 284px) {

  /* 课程体系 */
  .en_box1 {
    width: 100%;
    padding: 72px 0;
    box-sizing: border-box;
    text-align: center;
  }

  .en_box1 .w {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .en_box1 h3 {
    font-size: 22px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
  }

  .en_box1 .line {
    width: 53px;
    margin-bottom: 38px;
  }

  /* 课程特色 */
  .en_box2 {
    width: 100%;
    padding: 58px 0;
    box-sizing: border-box;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }

  .en_box2 .hd {
    text-align: center;
    margin-bottom: 44px;
  }

  .en_box2 .hd h3 {
    font-size: 22px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 16px;
  }

  .en_box2 .hd img {
    width: 53px;
  }

  .en_box2 .bd {
    display: flex;
    justify-content: center;
  }

  .en_box2 .bd .item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 208px;
    height: 219px;
    background: #FFFFFF;
    box-shadow: 0px 1px 20px 0px rgba(51, 51, 51, 0.08);
    opacity: 0.95;
    border-radius: 7px;
    padding: 22px 17px;
    box-sizing: border-box;
    margin: 0 7px;
    text-align: center;
  }

  .en_box2 .bd .item .num {
    width: 50px;
    height: 34px;
  }

  .en_box2 .bd .item .line {
    width: 44px;
    height: 1px;
    margin: 15px 0;
  }

  .en_box2 .bd .item:nth-child(1) .line {
    background-color: #1579DB;
  }

  .en_box2 .bd .item:nth-child(2) .line {
    background-color: #17C7BC;
  }

  .en_box2 .bd .item:nth-child(3) .line {
    background-color: #FFA418;
  }


  .en_box2 .bd .item .tu {
    width: 35px;
    margin-bottom: 14px;
  }

  .en_box2 .bd .item p {
    font-size: 12px;
  }

  /* 课程设置 */
  .en_box3 {
    width: 100%;
    padding-top: 58px;
    box-sizing: border-box;
  }

  .en_box3 .w {
    display: flex;
  }

  .en_box3 .img {
    position: relative;
    width: 438px;
    height: 277px;
    margin-right: 71px;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }

  .en_box3 .img img {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translate(50%, -50%);
  }

  .en_box3 .nr {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .en_box3 .nr h3 {
    font-size: 22px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
  }

  .en_box3 .nr img {
    width: 53px;
    margin-bottom: 38px;
  }

  .en_box3 .nr span {
    font-size: 12px;
    line-height: 2;
  }

  /* 课程亮点 */
  .en_box4 {
    width: 100%;
    padding-top: 71px;
    box-sizing: border-box;
  }

  .en_box4 .hd {
    text-align: center;
    margin-bottom: 74px;
  }

  .en_box4 .hd h3 {
    font-size: 22px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
  }

  .en_box4 .hd img {
    width: 53px;
  }

  .en_box4 .bd {
    position: relative;
    width: 100%;
    height: 292px;
  }

  .en_box4 .bd>img {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
  }

  .en_box4 .bd .in img {
    width: 100%;
    z-index: 99;
  } 

   /* 物理 课程设置 */
   .wl_box1 {
    width: 100%;
    padding-top: 42px;
    box-sizing: border-box;
  }
  .wl_box1 .hd {
    text-align: center;
    margin-bottom: 60px;
  }
  .wl_box1 .hd h3 {
    font-size: 22px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
  }
  .wl_box1 .hd img {
    width: 53px;
  }
  .wl_box1 .bd {
    padding: 0 68px;
    box-sizing: border-box;
  }
  .wl_box1 .bd .item {
    display: flex;
    margin-bottom: 7px;
  }
  .wl_box1 .bd .img {
    position: relative;
    /* width: 600px; */
    width: 50%;
    height: 277px;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }
  .wl_box1 .bd .img img {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translate(50%, -50%);
  }
  .wl_box1 .bd .z {
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 61px;
    box-sizing: border-box;
  }
  .wl_box1 .bd .z p {
    font-size: 18px;
    margin-bottom: 30px;
  }
  .wl_box1 .bd .z span {
    font-size: 12px;
    color: #666;
  }

  /* 物理 课程亮点 */
  .wl_box2 {
    width: 100%;
    margin-top: 88px;
    padding: 94px 0;
    box-sizing: border-box;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }

  .wl_box2 .box {
    min-width: 384px;
    height: 249px;
  }

  .wl_box2 .box h3 {
    font-size: 18px;
    font-weight: bold;
    color: #333333;
    margin-bottom: 36px;
  }

  .wl_box2 .box .ul {
    display: flex;
    width: 100%;
  } 

  .wl_box2 .box .ul ul{
    width: 193px;
    margin-right: 45px;
  }

  .wl_box2 .box ul li{
    margin-bottom: 16px;
  }

  .wl_box2 .box ul li span::before {
    position: absolute;
    top: 6px;
    left: 0;
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    background: #0268CC;
    border-radius: 50%;
  }
  .wl_box2 .box ul li span {
    display: inline-block;
    position: relative;
    font-size: 12px;
    color: #666;
    padding-left: 15px;
    box-sizing: border-box;
  }
 
}

@media screen and (min-width: 1500px) {

  /* 课程体系 */
  .en_box1 {
    width: 100%;
    padding: 99px 0 100px;
    box-sizing: border-box;
    text-align: center;
  }

  .en_box1 .w {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .en_box1 h3 {
    font-size: 30px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 22px;
  }

  .en_box1 .line {
    width: 72px;
    margin-bottom: 44px;
  }

  /* 课程特色 */
  .en_box2 {
    width: 100%;
    padding: 80px 0;
    box-sizing: border-box;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }

  .en_box2 .hd {
    text-align: center;
    margin-bottom: 60px;
  }

  .en_box2 .hd h3 {
    font-size: 30px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 22px;
  }

  .en_box2 .hd img {
    width: 72px;
  }

  .en_box2 .bd {
    display: flex;
    justify-content: center;
  }

  .en_box2 .bd .item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 285px;
    height: 300px;
    background: #FFFFFF;
    box-shadow: 0px 2px 27px 0px rgba(51, 51, 51, 0.08);
    opacity: 0.95;
    border-radius: 10px;
    padding: 30px 23px;
    box-sizing: border-box;
    margin: 0 10px;
    text-align: center;
  }

  .en_box2 .bd .item .num {
    width: 69px;
    height: 47px;
  }

  .en_box2 .bd .item .line {
    width: 60px;
    height: 1px;
    margin: 20px 0;
  }
  
  .en_box2 .bd .item:nth-child(1) .line {
    background-color: #1579DB;
  }

  .en_box2 .bd .item:nth-child(2) .line {
    background-color: #17C7BC;
  }

  .en_box2 .bd .item:nth-child(3) .line {
    background-color: #FFA418;
  }

  .en_box2 .bd .item .tu {
    width: 50px;
    margin-bottom: 19px;
  }

  .en_box2 .bd .item p {
    font-size: 14px;
  }

  /* 课程设置 */
  .en_box3 {
    width: 100%;
    padding-top: 80px;
    box-sizing: border-box;
  }

  .en_box3 .w {
    display: flex;
  }

  .en_box3 .img {
    position: relative;
    width: 600px;
    height: 380px;
    margin-right: 98px;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }

  .en_box3 .img img {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translate(50%, -50%);
  }

  .en_box3 .nr {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .en_box3 .nr h3 {
    font-size: 30px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 22px;
  }

  .en_box3 .nr img {
    width: 72px;
    margin-bottom: 52px;
  }

  .en_box3 .nr span {
    font-size: 16px;
    line-height: 2;
  }

  /* 课程亮点 */
  .en_box4 {
    width: 100%;
    padding-top: 98px;
    box-sizing: border-box;
  }

  .en_box4 .hd {
    text-align: center;
    margin-bottom: 102px;
  }

  .en_box4 .hd h3 {
    font-size: 30px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 22px;
  }

  .en_box4 .hd img {
    width: 72px;
  }

  .en_box4 .bd {
    position: relative;
    width: 100%;
    height: 401px;
  }

  .en_box4 .bd>img {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
  }

  .en_box4 .bd .in img {
    width: 100%;
    z-index: 99;
  } 

  /* 物理 课程设置 */
  .wl_box1 {
    width: 100%;
    padding-top: 58px;
    box-sizing: border-box;
  }
  .wl_box1 .hd {
    text-align: center;
    margin-bottom: 82px;
  }
  .wl_box1 .hd h3 {
    font-size: 30px;
    font-weight: bold;
    color: #0268CC;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 22px;
  }
  .wl_box1 .hd img {
    width: 72px;
  }
  .wl_box1 .bd {
    padding: 0 100px;
    box-sizing: border-box;
  }
  .wl_box1 .bd .item {
    display: flex;
    margin-bottom: 10px;
  }
  .wl_box1 .bd .img {
    position: relative;
    /* width: 600px; */
    width: 50%;
    height: 380px;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }
  .wl_box1 .bd .img img {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translate(50%, -50%);
  }
  .wl_box1 .bd .z {
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-left: 84px;
    box-sizing: border-box;
  }
  .wl_box1 .bd .z p {
    font-size: 24px;
    margin-bottom: 30px;
  }
  .wl_box1 .bd .z span {
    font-size: 16px;
    color: #666;
  }

  /* 物理 课程亮点 */
  .wl_box2 {
    width: 100%;
    margin-top: 120px;
    padding: 130px 0;
    box-sizing: border-box;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }

  .wl_box2 .box {
    min-width: 526px;
    height: 341px;
  }

  .wl_box2 .box h3 {
    font-size: 24px;
    font-weight: bold;
    color: #333333;
    margin-bottom: 50px;
  }

  .wl_box2 .box .ul {
    display: flex;
    width: 100%;
  } 

  .wl_box2 .box .ul ul {
    width: 264px;
    margin-right: 62px;
  }

  .wl_box2 .box ul li{
    margin-bottom: 23px;
  }

  .wl_box2 .box ul li span::before {
    position: absolute;
    top: 8px;
    left: 0;
    content: '';
    display: block;
    width: 8px;
    height: 8px;
    background: #0268CC;
    border-radius: 50%;
  }
  .wl_box2 .box ul li span {
    display: inline-block;
    position: relative;
    font-size: 16px;
    color: #666;
    padding-left: 20px;
    box-sizing: border-box;
  }
 
}