/*手机端适配*/
@media (max-width:1290px) {
  .center-box {padding-left: 15px;padding-right: 15px;width: 100%;}
}


@media (max-width:1140px) {
  .center-box1 {padding-left: 15px;padding-right: 15px;width: 100%;}
}

@media (max-width:992px) {
  .pages {
    padding: 25px 0;
  }
  .pages li {
    font-size: 14px;
  }
  .menu {display: block;}
  .hide-pc {display: block;}
  .hide-web {display: none;}
  ._web-mt15 {margin-top: 15px;}
  ._web-mt20 {margin-top: 20px;}
  ._web-mt25 {margin-top: 25px;}
  ._web-fs12 {font-size: 12px;}
  ._web-fs14 {font-size: 14px;}
  ._web-fs16 {font-size: 16px;}
  ._web-fs18 {font-size: 18px;}
  ._web-fs20 {font-size: 20px;}
  ._web-fs22 {font-size: 22px;}
  ._web-fs24 {font-size: 24px;}
  ._web-pd40 {padding: 40px 0;}
  ._web-pd15 {padding: 15px 0;}
  ._web-pd20 {padding: 20px 0;}
  ._web-pd25 {padding: 25px 0;}
  .nav-ul>li::after {display: none;}

    .experience-right-desc {
        font-size: 14px;
    }
  .teach-details-right {
    padding-left: 0;
  }

  .teach-details-dl {
    font-size: 14px;
    margin-top: 15px;
  }

  .teach-details-right-tit {
    font-size: 18px;
  }

  .teach-details-span {
    padding-bottom: 10px;
  }

  .teach-details-item + .teach-details-item {
    margin-top: 25px;
  }

  .teach-details-right-desc {
    font-size: 14px;
    line-height: 1.65em;
  }

  .teach-details-info-tit {
    font-size: 20px;
  }


  .qualified-ul-img-box {
    width: calc(100% - 10px);
    padding-top: calc(100% - 10px);
    top: 5px;
  }

  .qualified-ul-img {
    width: calc(100% - 10px);
    height: calc(100% - 10px);
    border-width: 5px;
  }

  .qualified-ul-posi {
    position: relative;
    transform: none;
    left: unset;
  }

  .experience-info-right-desc {
    margin-top: 5px;
  }

  .qualified-ul-top {
    padding: 20px 10px 15px;
  }

  .engineering-desc {
    font-size: 16px;
  }

  .qualified-ul-name {
    font-size: 16px;
  }

  .qualified-ul-bottom {
    padding: 10px;
    font-size: 14px;
  }

  .p30 {
    padding: 15px;
  }

  .experience-info-content {
    font-size: 18px;
  }

  .experience-show {
    font-size: 14px;
    line-height: 1.65em;
  }

  .experience-right-tit {
    font-size: 20px;
  }

  .experience-right-flag {
    width: 45px;
  }

  .experience-right-top {
    padding: 10px 10px 10px 60px;
  }

  .experience-right-top1 {
    padding: 10px 10px 10px 60px;
  }

  .experience-inner-tit {
    font-size: 16px;
  }

  .login-form-inner {
    padding: 20px;
  }

  .login-inner-left-tit {
    font-size: 32px;
    transform: translate(0,0);
    text-indent: 0;
    text-align: center;
  }

  .login-form-tit {
    font-size: 20px;
  }

  .login-dl>dt {
    font-size: 16px;
  }

  .login-btn {
    height: 45px;
    width: calc(calc(230 / 60) * 45px);
    font-size: 18px;
  }

  .qa-ul>li {
    margin-bottom: 25px;
  }

  .qa-ul>li .experience-right-tit {
    font-size: 18px;
  }

  .experience-right-ul>li {
    margin-bottom: 20px;
  }

  .logo-img {
    max-width: 150px;
  }

  .banner-word-tit,.banner-list-word-tit {
    font-size: 20px;
    
  }

  .banner-word-desc,.banner-list-word-desc {
    font-size: 14px;
    margin-top: 10px;
  }

  .banner-img,.banner-list-img {
    min-height: 180px;
    object-fit: cover;
  }

  .head {
    padding: 10px 0;
  }

  .normal-pd,.normal-pd1 {
    padding: 25px 0;
  }

  .mt40 {
    margin-top: 20px;
  }

  .normal-tit {
    font-size: 20px;
    margin-top: 0;
  }

  .icon-plus {
    display: block;
  }

  .ai-box-dl>dt {
    font-size: 16px;
  }

  .head-btn {
    min-width: 40px;
    border-radius: 50%;
    padding: 0 5px;
  }

  .ai-box-dl>dd {
    font-size: 14px;
  }

  .nav-ul>li {
    padding: 0;
    line-height: 40px;
    font-size: 14px;
    margin-right: 0;
  }

  .drop-tab a {
    color: #fff;
  }

  .nav-ul-box {
    width: 100%;
    height: 100%;
    background-color: transparent;
    overflow: hidden;
    left: -100%;
    top: 0px;
    position: fixed;
    z-index: 999;
    transition: left 0.3s ease;
  }

  .head-nav-ul {
    width: 60%;
    display: flex;
    flex-direction: column;
    padding: 15% 10px 0;
    justify-content: flex-start;
    background-color: rgba(0, 0, 0, .8);
    height: 100%;
  }

  .education-ul>li::after{
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translate(-50%,100%);
    border-top: 6px solid #fff;
    border-left: 12px solid transparent;
    border-right: 12px solid transparent;
  }

  .about-ul-left {
    padding: 15px 15px;
  }

  .nav-position-pd {
    padding: 15px 0;
  }

  .about-ul-tit {
    font-size: 16px;
  }

  .about-ul-desc {
    font-size: 14px;
    margin-top: 10px;
  }

  .about-ul-btn {
    height: 40px;
    width: calc(40px * 3);
  }

  .about-ul {
    gap: 20px;
    margin-top: 0;
  }

  .about-ul>li {
    margin-top: 0;
  }

  .web-tc {
    text-align: center;
  }

  .footer-logo {
    max-width: 150px;
  }

  .footer-tab-content {
    display: none;
  }

  .footer-top-right-ul {
    flex-direction: column;
    gap: 15px;
  }

  .footer-top-right-ul>li {
    margin-left: 0;
  }

  .footer-top {
    padding: 20px 0;
  }

  .mt30 {
    margin-top: 15px;
  }

  .swiper-partner .swiper-slide {
    padding: 20px 0;
  }

  .education-box-inner {
    margin-top: 20px;
  }

  .education-ul-tit {
    font-size: 18px;
  }

  .education-ul {
    gap: 15px;
  }

  .education-box .ai-box-dl { 
    padding: 10px;
  }
 
  .education-ul>li {
    position: relative;
    left: unset!important;
    top: unset!important;
    right: unset!important;
    bottom: unset!important;
    transform: none!important;
  }

  .nav-ul {
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .engineering-tit {
    font-size: 20px;
  }

  .plan-table th, .plan-table td {
    height: 45px;
  }

  .plan-table {
    font-size: 14px;
  }

  .subject-ul>li {
    padding: 10px 0;
    margin: 0 5px;
    font-size: 16px;
  }

  .normal-mt {
    margin-top: 20px;
  }

  .subject-cont-ul {
    padding: 15px 0;
  }

  .subject-cont-left {
    border-radius: 10px;
  }

  .subject-cont-right,.subject-cont-rleft {
    padding: 0;
  }

  .subject-cont-rtit {
    font-size: 18px;
  }

  .subject-cont-rdesc {
    font-size: 14px;
    line-height: 1.65em;
  }

  .subject-cont-ul>li a {
    padding: 10px;
  }

  .swiper-teacher-bottom {
    padding: 15px 10px;
  }

  .swiper-teacher-name {
    font-size: 16px;
  }

  .user-mid {
    width: 100%;
  }

  .user-left-bottom-ul>li a {
    height: 40px;
    padding: 0 15px;
    font-size: 14px;
  }

  .user-mid-tit {
    font-size: 20px;
  }

  .user-mid-word {
    font-size: 18px;
  }

  .p20,.experience-mid-ul>li {
    padding: 15px;
  }

  .p20 .p20 {
    padding: 0;
  }

  .user-left-bottom-ul>li {
    margin-top: 5px;
  }

  .user-left-bottom-ul {
    margin-top: -5px;
  }

  .mt20 {
    margin-top: 15px;
  }

  .school-tit,.experience-mid-top-tit {
    font-size: 16px;
  }

  .opacity-0 {
    display: none;
  }

  .system-item-tit {
    font-size: 16px;
  }

  .system-item-table {
    font-size: 12px;
    word-break: break-word;
  }

  .system-item-table-btn {
    width: auto;
    padding: 0 10px;
  }

  .system-item-table th, .system-item-table td {
    padding: 10px 5px;
  }

  .practice-tab-ul>li {
    margin-right: 5px;
    margin-bottom: 5px;
  }

  .practice-tab-ul>li a {
    height: 40px;
    min-width: calc(calc(140 / 45) * 40px);
  }

  .practice-list-ul>li {
    margin-right: 15px;
    margin-bottom: 15px;
  }

  .practice-right-tit {
    font-size: 16px;
  }

  .practice-left {
    padding: 20px 10px;
  }

  .practice-img {
    width: 50px;
  }

  .university-ul-top {
    padding: 20px 5px;
  }

  .university-ul-top-tit {
    font-size: 16px;
  }

  .university-ul>li {
    border-radius: 10px;
  }

  .book-ul li a {
    font-size: 16px;
    padding: 5px;
  }

  .question-answer-box {
    padding: 10px;
  }

  .answer-tab-ul>li a {
    height: 40px;
    font-size: 16px;
  }

  .knowledge-tit {
    font-size: 18px;
  }

  .knowledge-switch {
    height: 30px;
    width: 100px;
  }

  .question-answer-top-text,.question-answer-top-icon .iconfont {
    font-size: 16px;
  }

  .btn-primary {
    height: 35px;
    width: calc(calc(120 / 50) * 35px);
    font-size: 16px;
  }

  .answer-radio-text {
    display: none;
  }

  .answer-radio {
    width: 30px;
    height: 30px;
  }

  .grade-box-num {
    font-size: 36px;
  }

  .grade-box-num-small {
    font-size: 16px;
  }

  .grade-box-inner-bg-box {
    width: 50%;
  }

  .answer-score-span {
    margin-right: 5px;
    margin-top: 5px;
  }

  .grade-box {
    margin-bottom: 20px;
  }

  .user-mid-vice-tit {
    font-size: 18px;
  }

  .video-ul>li {
    padding: 15px 0;
  }

  .video-ul-right-right {
    display: none;
  }

  .video-ul-right-left {
    width: 100%;
  }

  .video-ul-right {
    padding-left: 10px;
  }

  .video-ul-left {
    width: 36%;
  }

  .video-ul-right-left-tit {
    font-size: 16px;
  }

  .video-ul-right-left-desc {
    line-height: 1.65em;
    margin-top: 5px;
  }

  
  .fix-web {display: flex;flex-direction: column;}
  .fix-web:after {display: none;}
  .fix-web>[class*=left],.fix-web>[class*=right] {width: 100%;}
  .flex-web {flex-direction: column!important;}
  .flex-web>[class*=left],.flex-web>[class*=right] {width: 100%;max-width: 100%;}
  .flex-web-reverse {flex-direction: column-reverse!important;display: flex;}
  .flex-web-reverse>[class*=left],.flex-web-reverse>[class*=right] {width: 100%;}
  .fix-web>.right-mt25 {margin-top: 25px;}
  .fix-web>.right-mt20 {margin-top: 20px;}
  .flex-web>.right-mt5 {margin-top: 5px;}
  .fix-web>.right-mt15 {margin-top: 15px;}
  .flex-web> .right-mt15 {margin-top: 15px;}
  .flex-web> .right-mt10 {margin-top: 10px;}
  .flex-web> .right-mt20 {margin-top: 20px;}
  .flex-web> .right-mt25 {margin-top: 25px;}
  .flex-web-reverse > .right-mt5 {margin-top: 5px;}
  .flex-web-reverse > .right-mt10 {margin-top: 10px;}
  .flex-web-reverse > .right-mt15 {margin-top: 15px;}
  .flex-web-reverse > .right-mt20 {margin-top: 20px;}
  .flex-web-reverse > .right-mt25 {margin-top: 25px;}
  ._web_col_1 {display: flex;flex-wrap: wrap;margin-top: 0;flex-direction: column;gap: 15px;}
  ._web_col_3 {display: flex;flex-wrap: wrap;gap: 10px;flex-direction: row;margin-top: 0;}
  ._web_col_2 {display: flex;flex-wrap: wrap;gap: 10px;flex-direction: row;margin-top: 0;}
  ._web_col_1>li {width: 100%;margin: 0!important;}
  ._web_col_2>li {width: calc(calc(100% - 10px) / 2);margin: 0!important;}
  ._web_col_3>li {
    width: calc(calc(100% - 20px) / 3);
    margin: 0!important;
  }

  .course-list-ul {
    margin-top: 15px;
  }

  .course-tit {
    font-size: 16px;
  }

  .user-mid-vice-ul {
    margin-top: 20px;
  }

  .user-mid-mask {
    font-size: 16px;
  }


  .tool-ul {
    gap: 30px;
    margin-top: 20px;
  }
}

@media (max-width:750px) {
  .flex-phone {flex-direction: column;}
  .flex-phone>[class*=left],.flex-phone>[class*=right] {width: 100%;}
  .flex-phone> .right-mt5 {margin-top: 5px;}
  .flex-phone> .right-mt15 {margin-top: 15px;}
  .flex-phone> .right-mt20 {margin-top: 20px;}
  .flex-phone> .right-mt25 {margin-top: 25px;}
}

@media (max-width:640px)  {

}
@media (max-width:575px) {

}
@media (max-width:414px) {
  
}

@media (max-width:375px) {

}