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

  /* 导航 */
  .bc {
    background: #4285F4;
    opacity: 0.06;
  }

  /* 为什么学习少儿编程 */
  .bc_box1 {
    width: 100%;
    padding-top: 57px;
    box-sizing: border-box;
  }

  .bc_box1 .hd {
    text-align: center;
    margin-bottom: 45px;
  }

  .bc_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;
  }

  .bc_box1 .hd img {
    width: 53px;
    margin-bottom: 14px;
  }

  .bc_box1 .hd p {
    font-size: 12px;
  }

  .bc_box1 .bd {
    display: flex;
    justify-content: space-between;
  }

  .bc_box1 .bd .item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 228px;
    height: 219px;
    background: #FFFFFF;
    box-shadow: 0px 1px 20px 0px rgba(51, 51, 51, 0.08);
    border-radius: 7px;
    padding: 43px 10px 0;
    box-sizing: border-box;
  }

  .bc_box1 .bd .item img {
    width: 37px;
  }

  .bc_box1 .bd .item .line {
    width: 44px;
    height: 1px;
    background-color: #333;
    margin: 20px 0 22px;
  }

  .bc_box1 .bd .item p {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 19px;
  }

  .bc_box1 .bd .item span {
    font-size: 12px;
    color: #666;
  }

  /* 让孩子爱上编程，拥抱未来 */
  .bc_box2 {
    width: 100%;
    padding: 87px 0 96px;
    box-sizing: border-box;
  }

  .bc_box2 .hd {
    text-align: center;
    margin-bottom: 60px;
  }

  .bc_box2 .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;
  }

  .bc_box2 .hd img {
    width: 53px;
  }

  .bc_box2 .bd {
    display: flex;
    justify-content: space-between;
  }

  .bc_box2 .bd .item {
    width: 303px;
    height: 204px;
    background: #FFFFFF;
    box-shadow: 0px 3px 6px 3px rgba(51, 51, 51, 0.06);
    border-radius: 7px;
    overflow: hidden;
  }

  .bc_box2 .bd .item img {
    width: 100%;
    height: 144px;
  }

  .bc_box2 .bd .item .z {
    padding: 14px 15px;
    box-sizing: border-box;
  }

  .bc_box2 .bd .item .z span {
    font-size: 12px;
    color: #666;
  }

  /* 独特的学科特色 */
  .bc_box3 {
    width: 100%;
    height: 438px;
    background-color: #F9F9F9;
    padding-top: 57px;
    box-sizing: border-box;
  }

  .bc_box3 .hd {
    text-align: center;
    margin-bottom: 58px;
  }

  .bc_box3 .hd h3 {
    font-size: 22px;
    font-family: Microsoft YaHei;
    font-weight: bold;
    color: #333333;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 16px;
  }

  .bc_box3 .hd img {
    width: 53px;
    margin-bottom: 17px;
  }

  .bc_box3 .bd {
    display: flex;
    justify-content: center;
  }

  .bc_box3 .bd .item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 150px;
    height: 160px;
    margin: 0 77px;
  }

  .bc_box3 .bd .item img {
    width: 88px;
    height: 88px;
    margin-bottom: 20px;
  }

  .bc_box3 .bd .item p {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 8px;
  }

  .bc_box3 .bd .item span {
    font-size: 12px;
    color: #666;
  }

  /* 专业的教学体系 */
  .bc_box4 {
    width: 100%;
    padding-top: 88px;
    box-sizing: border-box;
  }

  .bc_box4 .hd {
    text-align: center;
    margin-bottom: 59px;
  }

  .bc_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;
  }

  .bc_box4 .hd img {
    width: 53px;
  }

  .bc_box4 .bd .item {
    width: 100%;
    height: 160px;
    margin-bottom: 58px;
  }

  .bc_box4 .bd .item .z {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 42%;
    height: 100%;
    padding-left: 190px;
    box-sizing: border-box;
  }

  .bc_box4 .bd .item .z p {
    font-size: 18px;
    font-weight: bold;
    color: #0268CC;
    margin-bottom: 15px;
  }

  .bc_box4 .bd .item .z span {
    font-size: 12px;
    color: #666;
  }

  .bc_box4 .bd .item .img {
    width: 52%;
    height: 100%;
  }

  .bc_box4 .bd .item .img img {
    width: 100%;
    height: 100%;
  }

  /* 科学的课程设置 */
  .bc_box5 {
    width: 100%;
    padding-top: 30px;
    padding-bottom: 88px;
    box-sizing: border-box;
  }

  .bc_box5 .hd {
    text-align: center;
    margin-bottom: 58px;
  }

  .bc_box5 .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;
  }

  .bc_box5 .hd img {
    width: 53px;
  }

  .bc_box5 .bd {
    display: flex;
    justify-content: center;
  }

  .bc_box5 .bd .item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 277px;
    height: 204px;
    margin: 0 11px;
    padding: 20px 0 33px;
    box-sizing: border-box;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }

  .bc_box5 .bd .item img {
    margin-bottom: 21px;
  }

  .bc_box5 .bd .item p {
    font-size: 15px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 20px;
  }

  .bc_box5 .bd .item ul li {
    font-size: 12px;
    color: #fff;
  }
}

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

  /* 导航 */
  .bc {
    background: #4285F4;
    opacity: 0.06;
  }

  /* 为什么学习少儿编程 */
  .bc_box1 {
    width: 100%;
    padding-top: 78px;
    box-sizing: border-box;
  }

  .bc_box1 .hd {
    text-align: center;
    margin-bottom: 62px;
  }

  .bc_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;
  }

  .bc_box1 .hd img {
    width: 72px;
    margin-bottom: 19px;
  }

  .bc_box1 .hd p {
    font-size: 16px;
  }

  .bc_box1 .bd {
    display: flex;
    justify-content: space-between;
  }

  .bc_box1 .bd .item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 312px;
    height: 300px;
    background: #FFFFFF;
    box-shadow: 0px 2px 27px 0px rgba(51, 51, 51, 0.08);
    border-radius: 10px;
    padding: 60px 15px 0;
    box-sizing: border-box;
  }

  .bc_box1 .bd .item img {
    width: 50px;
  }

  .bc_box1 .bd .item .line {
    width: 60px;
    height: 1px;
    background-color: #333;
    margin: 28px 0 30px;
  }

  .bc_box1 .bd .item p {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 19px;
  }

  .bc_box1 .bd .item span {
    font-size: 14px;
    color: #666;
  }

  /* 让孩子爱上编程，拥抱未来 */
  .bc_box2 {
    width: 100%;
    padding: 119px 0 131px;
    box-sizing: border-box;
  }

  .bc_box2 .hd {
    text-align: center;
    margin-bottom: 82px;
  }

  .bc_box2 .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;
  }

  .bc_box2 .hd img {
    width: 72px;
  }

  .bc_box2 .bd {
    display: flex;
    justify-content: space-between;
  }

  .bc_box2 .bd .item {
    width: 416px;
    height: 280px;
    background: #FFFFFF;
    box-shadow: 0px 4px 8px 4px rgba(51, 51, 51, 0.06);
    border-radius: 10px;
    overflow: hidden;
  }

  .bc_box2 .bd .item img {
    width: 100%;
    height: 198px;
  }

  .bc_box2 .bd .item .z {
    padding: 19px 20px;
    box-sizing: border-box;
  }

  .bc_box2 .bd .item .z span {
    font-size: 14px;
    color: #666;
  }

  /* 独特的学科特色 */
  .bc_box3 {
    width: 100%;
    height: 600px;
    background-color: #F9F9F9;
    padding-top: 78px;
    box-sizing: border-box;
  }

  .bc_box3 .hd {
    text-align: center;
    margin-bottom: 79px;
  }

  .bc_box3 .hd h3 {
    font-size: 30px;
    font-family: Microsoft YaHei;
    font-weight: bold;
    color: #333333;
    background: linear-gradient(225deg, #0268CC 0%, #2588E8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 22px;
  }

  .bc_box3 .hd img {
    width: 72px;
    margin-bottom: 23px;
  }

  .bc_box3 .bd {
    display: flex;
    justify-content: center;
  }

  .bc_box3 .bd .item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 200px;
    height: 210px;
    margin: 0 99px;
  }

  .bc_box3 .bd .item img {
    width: 120px;
    height: 120px;
    margin-bottom: 30px;
  }

  .bc_box3 .bd .item p {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
  }

  .bc_box3 .bd .item span {
    font-size: 14px;
    color: #666;
  }

  /* 专业的教学体系 */
  .bc_box4 {
    width: 100%;
    padding-top: 121px;
    box-sizing: border-box;
  }

  .bc_box4 .hd {
    text-align: center;
    margin-bottom: 81px;
  }

  .bc_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;
  }

  .bc_box4 .hd img {
    width: 72px;
  }

  .bc_box4 .bd .item {
    width: 100%;
    height: 220px;
    margin-bottom: 80px;
  }

  .bc_box4 .bd .item .z {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 42%;
    height: 100%;
    padding-left: 260px;
    box-sizing: border-box;
  }

  .bc_box4 .bd .item .z p {
    font-size: 24px;
    font-weight: bold;
    color: #0268CC;
    margin-bottom: 20px;
  }

  .bc_box4 .bd .item .z span {
    font-size: 16px;
    color: #666;
  }

  .bc_box4 .bd .item .img {
    width: 52%;
    height: 100%;
  }

  .bc_box4 .bd .item .img img {
    width: 100%;
    height: 100%;
  }

  /* 科学的课程设置 */
  .bc_box5 {
    width: 100%;
    padding-top: 40px;
    padding-bottom: 120px;
    box-sizing: border-box;
  }

  .bc_box5 .hd {
    text-align: center;
    margin-bottom: 110px;
  }

  .bc_box5 .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;
  }

  .bc_box5 .hd img {
    width: 72px;
  }

  .bc_box5 .bd {
    display: flex;
    justify-content: center;
  }

  .bc_box5 .bd .item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 380px;
    height: 280px;
    margin: 0 15px;
    padding: 30px 0 45px;
    box-sizing: border-box;
    -webkit-background-size: cover !important;
    -moz-background-size: cover !important;
    -o-background-size: cover !important;
    background-size: cover !important;
  }

  .bc_box5 .bd .item img {
    margin-bottom: 29px;
  }

  .bc_box5 .bd .item p {
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 20px;
  }

  .bc_box5 .bd .item ul li {
    font-size: 16px;
    color: #fff;
  }
}