html,body {
  margin: 0;
  padding: 0;
}

@media screen and (max-width: 768px) {
  /* 在屏幕宽度小于等于768px时应用的样式 */

  .max-body {
    width: 90%;
    max-width: 768px;
    min-width: 300px;
    margin: 0 auto;
    height: 100%;
  }
  .header-container {
    background-color: rgba(34,55,140,1);
    color: white;
    height: 80px;
  }
  .header-container .header-logo {
    font-size: 20px;
    font-weight: bold;
    display: flex;
    align-items: center;
  }
  .header-container .header-logo img {
    width: 30px;
    display: block;
    margin-right: 10px;
  }
  .header-container .max-body {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    /*justify-content: space-between;*/
    /*align-items: center;*/
    /*flex-direction: row;*/
  }

  .mobile_menu {
    width: 25px;
    height: 25px;
  }

  #topMenuBox {
    visibility: hidden;
    position: absolute;
    top: 90px;
    right: 10px;
    width: 50%;
    height: auto;
    background: white;
    border-radius: 5px;
    box-shadow: 1px 1px 2px #ccc;
  }

  #topMenuBox.hidden {
    transition: visibility 1s;
    animation: fadeOut 1.0s;
  }

  #topMenuBox.show {
    visibility: visible;
    animation: fadeIn 0.5s;
  }

  @keyframes fadeIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }

  @keyframes fadeOut {
    from {
      opacity: 1;
    }
    to {
      opacity: 0;
    }
  }

  .fadeOut {
    animation-name: fadeOut;
  }

  .fadeIn {
    animation-name: fadeIn;
  }

  #topMenuBox .menuContainer {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-content: center;
  }

  #topMenuBox .menuContainer .menuItem {
    font-weight: bold;
    color: #0A246A;
    padding: 1.5em 1.5em;
    border-bottom: 1px dotted rgba(5,6,200, 0.5);
    cursor: pointer;
  }

  #topMenuBox .menuContainer .menuItem:active {
    background-color: rgba(5,6,200, 0.5);
    color: white;
  }

  .header-container .header-login-box {
    /*display: flex;*/
    display: none;

  }
  .header-container .header-login {
    padding: 2px 14px;
    background-color: #fff;
    border-radius: 20px;
    color: #4344A4;
    cursor: pointer;
    margin-left: 2em;
  }
  .header-container .header-register {
    padding: 2px 14px;
    border-radius: 20px;
    border: 1px solid white;
    cursor: pointer;
  }
  .header-container .header-login-box .shu-line {
    height: 30px;
    width: 1px;
    background-color: white;
    margin: 0 20px;
  }
  .header-login-box {
    display: none;
  }
  .header-container .header-login-box .header_menu_item {
    margin: 1.2em 1.2em 1.2em 1.2em;
    padding-top: 1em;
    padding-bottom: 1em;
  }
  .header-container .header-login-box .header_menu_item:hover {
    margin: 0 1.2em;
    border-bottom: 2px solid white;
    cursor: pointer;
  }
  .banner-container {
    width: 100vw;
    height: 56vw;
    background: url('./背景@2x.png');
    background-position: top center;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  .banner-container .slogin {
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 1.5em;
    /* margin-top: 16%; */
  }

  .banner-container .tjbutton {
    font-size: 16px;
    font-weight: normal;
    color: #fff;
    padding: 0.5em 3em;
    border: 1px solid #fff;
    cursor: pointer;
  }

  .banner-container .tjbutton:hover {
    background-color: #fff;
    color: #263CAE;
  }

  .content-container {
    margin-top: 1em;
  }

  .content-container .platform {
    max-width: 768px;
    /*display: flex;*/
    /*flex-direction: column;*/
    /*justify-content: space-between;*/
    margin: 0 auto;
    /*padding-bottom: 40px;*/
    /*margin-bottom: 2em;*/
  }
  .content-container .platform .text-box {
    /*width: 750px;*/
    font-size: 12px;
    border: 1px solid #131F5C;
    border-radius: 20px;
    padding: 10px;
    color: #4E4E4E;
    line-height: 2.5em;
    text-indent: 2em;
  }
  .content-container .platform .right-box {
    display: none;
    width: 300px;
    /*position: relative;*/
  }
  .content-container .platform .right-box .title {
    padding: 10px 20px;
    background-color: #263CAE;
    color: #fff;
    font-size: 30px;
    /*position: absolute;*/
    /*top: 0;*/
    /*right: 0;*/
  }
  .content-container .platform .right-box .img-box img {
    width: 120px;
    /*position: absolute;*/
    /*top: 100px;*/
    /*right: 0;*/
  }

  .mediate-container {
    background: #F5F5F5;
    padding-top: 15px;
    padding-bottom: 15px;
  }
  .content-container .mediate-center .title {
    padding: 10px 20px;
    background-color: #263CAE;
    color: #fff;
    font-size: 16px;
    width: auto;
    margin-bottom: 15px;
    text-align: center;
  }
  .content-container .mediate-center .card-list {
    display: grid;
    grid-template-columns: repeat(3, calc(33.1%));
    grid-column-gap: 1px;
  }
  .content-container .mediate-center .card-box {
    padding: 16px;
    background: #fff;
  }
  .content-container .mediate-center .card-list .card-img {
    width: 100%;
    height: 170px;
    display: block;
    object-fit: cover;
  }
  .content-container .mediate-center .card-list .card-title {
    text-align: center;
    background-color: #263CAE;
    color: #fff;
    font-size: 14px;
    padding: 4px;
  }
  .content-container .mediate-center .card-list .card-text {
    padding-top: 20px;
    padding-bottom: 8px;
    font-size: 12px;
    color: #666666;
    line-height: 22px;
    text-indent: 24px;
  }

  .login-menu-box {
    position: absolute;
    top: 0;
    right: 0;
    background-color: #fff;
    width: 120px;
    display: none;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 6px 10px -6px rgba(0, 36, 100, 0.8);
  }
  .login-menu-box .login-menu-item {
    height: 36px;
    border-bottom: 1px solid #E5E5E5;
    line-height: 36px;
    padding: 4px 20px;
    cursor: pointer;
  }
  .login-menu-box .login-menu-item:hover {
    background-color: #F5F5F5;
  }
  .login-menu-box .login-menu-item:last-child {
    border-bottom: none;
  }
  .login-menu-box:focus,.login-menu-box:focus-visible {
    outline: none;
  }

  .card-link {
    color:rgba(4, 6, 50, 0.66);
    font-size: 14px;
    font-weight: bold;
    display: flex;
    justify-content: end;
    margin: 2em auto;
  }

  .card-link a {
    text-decoration: none;
  }

  .footer-container {
    background-color: rgba(33, 33, 33, 1);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    max-width: 768px;
  }

  .foot-card-container {
    width: 90%;
    /*padding: 3em 10em;*/
    display: flex;
    flex-direction: row;
    justify-content: space-between;
  }

  .foot-card {
    font-size: 11px;
  }
  .foot-card h2 {
    font-size: 12px;
  }

}

@media screen and (min-width: 768px) and (max-width: 1024px) {
  /* 在屏幕宽度小于等于768px时应用的样式 */
  .max-body {
    width: 80%;
    max-width: 1024px;
    min-width: 768px;
    margin: 0 auto;
    height: 100%;
  }
  .header-container {
    background-color: rgba(34,55,140,1);
    color: white;
    height: 80px;
  }
  .header-container .header-logo {
    font-size: 20px;
    font-weight: bold;
    display: flex;
    align-items: center;
  }
  .header-container .header-logo img {
    width: 30px;
    display: block;
    margin-right: 10px;
  }
  .header-container .max-body {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .header-container .header-login-box {
    display: flex;
    align-items: center;
  }
  .header-container .header-login {
    padding: 2px 14px;
    background-color: #fff;
    border-radius: 20px;
    color: #4344A4;
    cursor: pointer;
    margin-left: 2em;
  }
  .header-container .header-register {
    padding: 2px 14px;
    border-radius: 20px;
    border: 1px solid white;
    cursor: pointer;
  }
  .header-container .header-login-box .shu-line {
    height: 30px;
    width: 1px;
    background-color: white;
    margin: 0 20px;
  }
  .header-container .header-login-box .header_menu_item {
    margin: 1.2em 1.2em 1.2em 1.2em;
    padding-top: 1em;
    padding-bottom: 1em;
  }
  .header-container .header-login-box .header_menu_item:hover {
    margin: 0 1.2em;
    border-bottom: 2px solid white;
    cursor: pointer;
  }
  .banner-container {
    width: 100vw;
    height: 56vw;
    background: url('./背景@2x.png');
    background-position: top center;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .banner-container .slogin {
    font-size: 48px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 1.5em;
    /* margin-top: 16%; */
  }

  .mobile_menu {
    display: none;
    width: 25px;
    height: 25px;
  }

  #topMenuBox {
    display: none;
  }

  .banner-container .tjbutton {
    font-size: 24px;
    font-weight: normal;
    color: #fff;
    padding: 0.5em 3em;
    border: 1px solid #fff;
    cursor: pointer;
  }

  .banner-container .tjbutton:hover {
    background-color: #fff;
    color: #263CAE;
  }

  .content-container {
    margin-top: 5em;
  }

  .content-container .platform {
    width: 1100px;
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
    padding-bottom: 40px;
    margin-bottom: 2em;
  }
  .content-container .platform .text-box {
    width: 750px;
    border: 1px solid #131F5C;
    border-radius: 20px;
    padding: 40px;
    color: #4E4E4E;
    line-height: 60px;
    padding-right: 70px;
  }
  .content-container .platform .right-box {
    width: 300px;
    position: relative;
  }
  .content-container .platform .right-box .title {
    padding: 10px 20px;
    background-color: #263CAE;
    color: #fff;
    font-size: 30px;
    position: absolute;
    top: 0;
    right: 0;
  }
  .content-container .platform .right-box .img-box img {
    width: 320px;
    position: absolute;
    top: 100px;
    right: 0;
  }

  .mediate-container {
    background: #F5F5F5;
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .content-container .mediate-center .title {
    padding: 10px 20px;
    background-color: #263CAE;
    color: #fff;
    font-size: 30px;
    width: 200px;
    margin-bottom: 30px;
  }
  .content-container .mediate-center .card-list {
    display: grid;
    grid-template-columns: repeat(3, calc(33%));
    grid-column-gap: 20px;
  }
  .content-container .mediate-center .card-box {
    padding: 16px;
    background: #fff;
  }
  .content-container .mediate-center .card-list .card-img {
    width: 100%;
    height: 170px;
    display: block;
    object-fit: cover;
  }
  .content-container .mediate-center .card-list .card-title {
    text-align: center;
    background-color: #263CAE;
    color: #fff;
    font-size: 14px;
    padding: 4px;
  }
  .content-container .mediate-center .card-list .card-text {
    padding-top: 20px;
    padding-bottom: 8px;
    font-size: 12px;
    color: #666666;
    line-height: 22px;
    text-indent: 24px;
  }

  .login-menu-box {
    position: absolute;
    top: 0;
    right: 0;
    background-color: #fff;
    width: 120px;
    display: none;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 6px 10px -6px rgba(0, 36, 100, 0.8);
  }
  .login-menu-box .login-menu-item {
    height: 36px;
    border-bottom: 1px solid #E5E5E5;
    line-height: 36px;
    padding: 4px 20px;
    cursor: pointer;
  }
  .login-menu-box .login-menu-item:hover {
    background-color: #F5F5F5;
  }
  .login-menu-box .login-menu-item:last-child {
    border-bottom: none;
  }
  .login-menu-box:focus,.login-menu-box:focus-visible {
    outline: none;
  }

  .card-link {
    color:rgba(4, 6, 50, 0.66);
    font-size: 14px;
    font-weight: bold;
    display: flex;
    justify-content: end;
    margin: 2em auto;
  }

  .card-link a {
    text-decoration: none;
  }

  .footer-container {
    background-color: rgba(33, 33, 33, 1);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  .foot-card-container {
    width: 90%;
    padding: 3em 10em;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
  }

}

@media screen and (min-width: 1024px) {
  .max-body {
    width: 80%;
    max-width: 1600px;
    min-width: 900px;
    margin: 0 auto;
    height: 100%;
  }
  .header-container {
    background-color: rgba(34,55,140,1);
    color: white;
    height: 80px;
  }
  .header-container .header-logo {
    font-size: 20px;
    font-weight: bold;
    display: flex;
    align-items: center;
  }
  .header-container .header-logo img {
    width: 30px;
    display: block;
    margin-right: 10px;
  }
  .header-container .max-body {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .header-container .header-login-box {
    display: flex;
    align-items: center;
  }
  .header-container .header-login {
    padding: 2px 14px;
    background-color: #fff;
    border-radius: 20px;
    color: #4344A4;
    cursor: pointer;
    margin-left: 2em;
  }
  .header-container .header-register {
    padding: 2px 14px;
    border-radius: 20px;
    border: 1px solid white;
    cursor: pointer;
  }
  .header-container .header-login-box .shu-line {
    height: 30px;
    width: 1px;
    background-color: white;
    margin: 0 20px;
  }
  .header-container .header-login-box .header_menu_item {
    margin: 1.2em 1.2em 1.2em 1.2em;
    padding-top: 1em;
    padding-bottom: 1em;
  }
  .header-container .header-login-box .header_menu_item:hover {
    margin: 0 1.2em;
    border-bottom: 2px solid white;
    cursor: pointer;
  }
  .banner-container {
    width: 100vw;
    height: 56vw;
    background: url('./背景@2x.png');
    background-position: top center;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .banner-container .slogin {
    font-size: 48px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 1.5em;
    /* margin-top: 16%; */
  }

  .mobile_menu {
    display: none;
    width: 25px;
    height: 25px;
  }

  #topMenuBox {
    display: none;
  }

  .banner-container .tjbutton {
    font-size: 24px;
    font-weight: normal;
    color: #fff;
    padding: 0.5em 3em;
    border: 1px solid #fff;
    cursor: pointer;
  }

  .banner-container .tjbutton:hover {
    background-color: #fff;
    color: #263CAE;
  }

  .content-container {
    margin-top: 5em;
  }

  .content-container .platform {
    width: 1100px;
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
    padding-bottom: 40px;
    margin-bottom: 2em;
  }
  .content-container .platform .text-box {
    width: 750px;
    border: 1px solid #131F5C;
    border-radius: 20px;
    padding: 40px;
    color: #4E4E4E;
    line-height: 60px;
    padding-right: 70px;
  }
  .content-container .platform .right-box {
    width: 300px;
    position: relative;
  }
  .content-container .platform .right-box .title {
    padding: 10px 20px;
    background-color: #263CAE;
    color: #fff;
    font-size: 30px;
    position: absolute;
    top: 0;
    right: 0;
  }
  .content-container .platform .right-box .img-box img {
    width: 320px;
    position: absolute;
    top: 100px;
    right: 0;
  }

  .mediate-container {
    background: #F5F5F5;
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .content-container .mediate-center .title {
    padding: 10px 20px;
    background-color: #263CAE;
    color: #fff;
    font-size: 30px;
    width: 200px;
    margin-bottom: 30px;
  }
  .content-container .mediate-center .card-list {
    display: grid;
    grid-template-columns: repeat(3, calc(33%));
    grid-column-gap: 20px;
  }
  .content-container .mediate-center .card-box {
    padding: 16px;
    background: #fff;
  }
  .content-container .mediate-center .card-list .card-img {
    width: 100%;
    height: 170px;
    display: block;
    object-fit: cover;
  }
  .content-container .mediate-center .card-list .card-title {
    text-align: center;
    background-color: #263CAE;
    color: #fff;
    font-size: 14px;
    padding: 4px;
  }
  .content-container .mediate-center .card-list .card-text {
    padding-top: 20px;
    padding-bottom: 8px;
    font-size: 12px;
    color: #666666;
    line-height: 22px;
    text-indent: 24px;
  }

  .login-menu-box {
    position: absolute;
    top: 0;
    right: 0;
    background-color: #fff;
    width: 120px;
    display: none;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 6px 10px -6px rgba(0, 36, 100, 0.8);
  }
  .login-menu-box .login-menu-item {
    height: 36px;
    border-bottom: 1px solid #E5E5E5;
    line-height: 36px;
    padding: 4px 20px;
    cursor: pointer;
  }
  .login-menu-box .login-menu-item:hover {
    background-color: #F5F5F5;
  }
  .login-menu-box .login-menu-item:last-child {
    border-bottom: none;
  }
  .login-menu-box:focus,.login-menu-box:focus-visible {
    outline: none;
  }

  .card-link {
    color:rgba(4, 6, 50, 0.66);
    font-size: 14px;
    font-weight: bold;
    display: flex;
    justify-content: end;
    margin: 2em auto;
  }

  .card-link a {
    text-decoration: none;
  }

  .footer-container {
    background-color: rgba(33, 33, 33, 1);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }

  .foot-card-container {
    width: 90%;
    padding: 3em 10em;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
  }


}