:root {
    --index-bg-color1: linear-gradient(0deg, #024735 0%, #002b24 100%);
    --index-bg-color2: #004030;
  }
  
  .index {
    width: 100%;
    height: 100%;
    background: #002b24;
  }
  
  .top_nav {
    background: linear-gradient(180deg, #0b865b 0%, #01704d 50%, #004731 100%);
    border-bottom: 1px solid #13d793;
  }
  @media screen and (max-width: 767px) {
    .top_nav .main_wrap {
      height: 0.4rem;
      padding-left: 0.15rem;
    }
    .main_wrap img {
      width: 1rem;
    }
  }
  
  @media screen and (min-width: 1100px) {
    .top_nav .main_wrap {
      /* max-width: 10.24rem; */
      /* margin: 0 auto; */
      margin-left: 1.9rem;
      height: 0.48rem;
    }
    .main_wrap img {
      width: 1.44rem;
    }
  }
  
  @media screen and (max-width: 1099px) and (min-width: 766px) {
    .top_nav .main_wrap {
      margin-left: 0.7rem;
      height: 0.48rem;
    }
    .main_wrap img {
      width: 1.44rem;
    }
  }
  
  /* ===========  banner  =============== */
  
  .banner_wrap {
    margin: 0 auto;
    position: relative;
  }
  .banner_wrap img {
    height: 100%;
    width: 100%;
    object-fit: cover;
  }
  .banner_wrap h3 {
    position: absolute;
  }
  .banner_wrap p {
    position: absolute;
  }
  .banner_wrap .download_links {
    position: absolute;
  }
  
  .download_links .item {
    -webkit-user-select: none;
    -ms-user-select: none;
    -moz-user-select: none;
    -khtml-user-select: none;
    user-select: none;
    color: #dbdbdb;
    background-color: rgba(0, 0, 0, 0.4);
    border: 1px solid #ffea48;
    border-radius: 1rem;
  }
  @media screen and (max-width: 767px) {
    .banner_wrap {
      margin-top: -0.17rem;
      background: url("../images/gw_zs_2.png") no-repeat center;
      width: 100%;
      margin: 0 auto;
      height: 5.01rem;
    }
    .banner_wrap h3 {
      width: 2.6rem;
      top: 1.26rem;
      left: 50%;
      transform: translateX(-50%);
      font-size: 0.18rem;
      text-align: center;
    }
    .banner_wrap p {
      display: none;
    }
  
    /* 下载按钮 */
    .banner_wrap .download_links {
      top: 100%;
      left: 50%;
      transform: translate(-50%, 0%);
    }
    .download_links .item {
      width: 3.3rem;
      height: 0.46rem;
      padding-left: 0.15rem;
      margin-bottom: 0.15rem;
    }
    .download_links .item img {
      width: 0.24rem;
      height: 0.29rem;
    }
    .download_links .item span {
      font-size: 0.2rem;
      line-height: 1;
      margin-left: 0.1rem;
      /* margin-bottom: 0.1rem; */
    }
  }
  
  @media screen and (min-width: 1100px) {
    .banner_wrap {
      /* margin-top: -0.17rem; */
      background: url("../images/gw_zs.png") no-repeat center;
      width: 100%;
      margin: 0 auto;
      height: 7.23rem;
    }
    .banner_wrap h3 {
      top: 1.5rem;
      left: 1.9rem;
      font-size: 0.2rem;
    }
  
    .banner_wrap p {
      width: 6rem;
      top: 2rem;
      left: 1.9rem;
      font-size: 0.14rem;
    }
  
    /* 下载按钮 */
    .banner_wrap .download_links {
      top: 50%;
      left: 1.8rem;
      transform: translateY(-20%);
    }
    .download_links .item:hover {
      color: #e2a925;
      cursor: pointer;
    }
    .download_links .item {
      width: 4.5rem;
      height: 0.63rem;
      padding-left: 0.26rem;
      /* background-image: url("../images/gw_db_2.png");
      background-repeat: no-repeat; */
      margin-bottom: 0.3rem;
    }
    .download_links .item img {
      width: 0.33rem;
      height: 0.4rem;
    }
    .download_links .item span {
      font-size: 0.2rem;
      line-height: 1;
      margin-left: 0.22rem;
    }
  }
  @media screen and (max-width: 1099px) and (min-width: 766px) {
    .banner_wrap {
      /* margin-top: -0.17rem; */
      background: url("../images/pb_zs.png") no-repeat center;
      width: 100%;
      margin: 0 auto;
      height: 4.22rem;
    }
    .banner_wrap h3 {
      top: 1.2rem;
      left: 0.7rem;
      font-size: 0.16rem;
      width: 5rem;
    }
  
    .banner_wrap p {
      width: 4.5rem;
      top: 1.8rem;
      left: 0.7rem;
      font-size: 0.14rem;
    }
  
    /* 下载按钮 */
    .banner_wrap .download_links {
      top: 60%;
      left: 0.7rem;
      transform: translateY(20%);
    }
    .download_links .item:hover {
      color: #e2a925;
      cursor: pointer;
    }
    .download_links .item {
      width: 3rem;
      height: 0.34rem;
      padding-left: 0.15rem;
      margin-bottom: 0.15rem;
    }
    .download_links .item img {
      width: 0.2rem;
      height: 0.24rem;
    }
    .download_links .item span {
      font-size: 0.16rem;
      line-height: 1;
      margin-left: 0.1rem;
    }
  }
  
  /* ===========  tab  =============== */
  
  .tab_wrap {
    background: var(--index-bg-color2);
    position: relative;
    z-index: 2;
  }
  .tab_wrap .tab_main_wrap {
    max-width: 12.8rem;
    margin: 0 auto;
    height: 100%;
    justify-content: space-around;
  }
  .tab_main_wrap .img_wrap img {
    width: 100%;
    height: 100%;
  }
  @media screen and (max-width: 767px) {
    .tab_wrap {
      height: 0.5rem;
      padding: 0 0.2rem;
      margin-top: 1.25rem;
    }
    .tab_wrap .img1 {
      width: 0.4rem;
      height: 0.18rem;
    }
    .tab_wrap .img2 {
      width: 0.36rem;
      height: 0.2rem;
    }
    .tab_wrap .img3 {
      width: 0.42rem;
      height: 0.22rem;
    }
    .tab_wrap .img4 {
      width: 0.46rem;
      height: 0.18rem;
    }
  }
  
  @media screen and (min-width: 1100px) {
    .tab_wrap {
      height: 0.7rem;
    }
    .tab_wrap .img1 {
      width: 0.79rem;
      height: 0.36rem;
    }
    .tab_wrap .img2 {
      width: 0.75rem;
      height: 0.4rem;
    }
    .tab_wrap .img3 {
      width: 0.44rem;
      height: 0.44rem;
    }
    .tab_wrap .img4 {
      width: 0.93rem;
      height: 0.36rem;
    }
  }
  @media screen and (max-width: 1099px) and (min-width: 766px) {
    .tab_wrap {
      height: 0.7rem;
    }
    .tab_wrap .img1 {
      width: 0.79rem;
      height: 0.36rem;
    }
    .tab_wrap .img2 {
      width: 0.75rem;
      height: 0.4rem;
    }
    .tab_wrap .img3 {
      width: 0.44rem;
      height: 0.44rem;
    }
    .tab_wrap .img4 {
      width: 0.93rem;
      height: 0.36rem;
    }
  }
  
  /* ===========  list  =============== */
  
  .list_main_wrap {
    background: var(--index-bg-color1);
  }
  .list_main_wrap .main_wrap {
    max-width: 12.8rem;
    margin: 0 auto;
  }
  .main_wrap .head_title {
    text-align: center;
    position: relative;
  }
  .head_title h2 {
    line-height: 1;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    background: linear-gradient(
      0deg,
      #ffc300 36.9873046875%,
      #ffea65 83.6669921875%
    );
    -webkit-background-clip: text;
    color: transparent;
  }
  
  .desc_list_wrap {
    font-size: 0.14rem;
    color: #ccc;
  }
  
  .desc_list_wrap .item:nth-child(1) {
    background: linear-gradient(90deg, #00453a 0%, transparent 80%);
  }
  
  .desc_list_wrap .item:nth-child(2) {
    background: linear-gradient(90deg, transparent 20%, #004a3c 100%);
  }
  
  .desc_list_wrap .item:nth-child(3) {
    background: linear-gradient(90deg, #004d3d 0%, transparent 80%);
  }
  
  .desc_list_wrap .item:nth-child(4) {
    background: linear-gradient(90deg, transparent 20%, #025240 100%);
    margin-bottom: 0;
  }
  
  @media screen and (max-width: 767px) {
    .list_main_wrap {
      padding-bottom: 0.1rem;
    }
    /* 标题 */
    .head_title {
      margin-top: -0.6rem;
    }
    .head_title img {
      width: 1.5rem;
      height: 0.83rem;
    }
    .head_title .left_img {
      margin-right: -0.26rem;
    }
    .head_title .right_img {
      margin-left: -0.04rem;
      transform: rotateY(180deg);
    }
    .head_title h2 {
      bottom: 0.4rem;
      font-size: 0.2rem;
    }
  
    .desc_list_wrap {
      /* margin-top: 0.4rem; */
      padding: 0.1rem;
    }
    .desc_list_wrap .item {
      border-radius: 0.1rem;
      margin-bottom: 0.2rem;
      padding: 0.1rem;
    }
  
    .desc_list_wrap .item .main_text {
      flex: 1;
    }
  
    .desc_list_wrap .item .main_text h3 {
      font-size: 0.14rem;
    }
    .desc_list_wrap .item .main_text p {
      margin-top: 0.04rem;
      font-size: 0.08rem;
    }
  
    .desc_list_wrap .item:nth-child(1) img,
    .desc_list_wrap .item:nth-child(3) img {
      width: 0.58rem;
      height: 0.58rem;
      margin-left: 0.2rem;
      flex-shrink: 0;
    }
  
    .desc_list_wrap .item:nth-child(2) img,
    .desc_list_wrap .item:nth-child(4) img {
      width: 0.58rem;
      height: 0.58rem;
      margin-right: 0.2rem;
      flex-shrink: 0;
    }
  }
  
  @media screen and (min-width: 1100px) {
    .list_main_wrap {
      padding-bottom: 0.88rem;
    }
    /* 标题 */
    .head_title img {
      width: 5.48rem;
      height: 1.91rem;
    }
    .head_title .left_img {
      margin-right: -0.28rem;
    }
    .head_title .right_img {
      margin-left: -0.04rem;
      transform: rotateY(180deg);
    }
    .head_title h2 {
      bottom: 0.4rem;
      font-size: 0.53rem;
    }
  
    .desc_list_wrap {
      margin-top: 0.7rem;
      text-align: justify;
    }
    .desc_list_wrap .item {
      height: 2.5rem;
      border-radius: 0.1rem;
      margin-bottom: 0.88rem;
    }
    .desc_list_wrap .item .main_text p {
      margin-top: 0.16rem;
      line-height: 0.24rem;
    }
  
    .desc_list_wrap .item:nth-child(1),
    .desc_list_wrap .item:nth-child(3) {
      padding: 0 0.62rem 0 0.32rem;
    }
    .desc_list_wrap .item:nth-child(1) img,
    .desc_list_wrap .item:nth-child(3) img {
      margin-left: 0.8rem;
    }
  
    .desc_list_wrap .item:nth-child(2),
    .desc_list_wrap .item:nth-child(4) {
      padding: 0 0.32rem 0 0.62rem;
    }
    .desc_list_wrap .item:nth-child(2) img,
    .desc_list_wrap .item:nth-child(4) img {
      margin-right: 0.8rem;
    }
  }
  @media screen and (max-width: 1099px) and (min-width: 766px) {
    .list_main_wrap {
      padding: 0 0.7rem;
      padding-bottom: 0.88rem;
    }
    /* 标题 */
    .head_title img {
      width: 3rem;
      height: 1rem;
    }
    .head_title .left_img {
      margin-right: -0.28rem;
    }
    .head_title .right_img {
      margin-left: -0.04rem;
      transform: rotateY(180deg);
    }
    .head_title h2 {
      bottom: 0.4rem;
      font-size: 0.53rem;
    }
  
    .desc_list_wrap {
      margin-top: 0.7rem;
    }
    .desc_list_wrap .item {
      height: 1.8rem;
      border-radius: 0.1rem;
      margin-bottom: 0.4rem;
    }
    .desc_list_wrap .item .main_text p {
      margin-top: 0.16rem;
      line-height: 0.24rem;
    }
  
    .desc_list_wrap .item:nth-child(1),
    .desc_list_wrap .item:nth-child(3) {
      padding: 0 0.62rem 0 0.32rem;
    }
    .desc_list_wrap .item:nth-child(1) img,
    .desc_list_wrap .item:nth-child(3) img {
      margin-left: 0.8rem;
    }
  
    .desc_list_wrap .item:nth-child(2),
    .desc_list_wrap .item:nth-child(4) {
      padding: 0 0.32rem 0 0.62rem;
    }
    .desc_list_wrap .item:nth-child(2) img,
    .desc_list_wrap .item:nth-child(4) img {
      margin-right: 0.8rem;
    }
  }
  
  /* ===========  footer  =============== */
  
  .footer_wrap {
    background-color: #003328;
  }
  .footer_wrap .main_wrap {
    margin: 0 auto;
    color: #267d67;
  }
  @media screen and (max-width: 767px) {
    .footer_wrap .main_wrap {
      height: 0.4rem;
      font-size: 0.12rem;
    }
  }
  
  @media screen and (min-width: 1100px) {
    .footer_wrap .main_wrap {
      height: 0.65rem;
      max-width: 12.8rem;
      font-size: 0.18rem;
    }
  }
  @media screen and (max-width: 1099px) and (min-width: 766px) {
    .footer_wrap .main_wrap {
      height: 0.4rem;
      font-size: 0.12rem;
    }
  }