.section3 {
       position: relative;

   }

   .box3 {
       position: relative;
       padding-left: var(--container);
       width: 100%;
       display: flex;
       flex-wrap: wrap;
       justify-content: space-between;
       align-items: center;
   }

   .box3 .lt {
       width: 50%;
       height: 100%;
       margin-top: 120px;
       display: flex;
       flex-direction: column;
       justify-content: center;
   }

   .box3 .text {
       display: flex;
       justify-content: space-between;
   }

   .b301 h2 {
       font-family: DIN;
       font-weight: 700;
       font-size: 18px;
       line-height: 1;
       color: #000000;
       margin-top: 25px;
   }

   .b302 {
       display: flex;
       align-items: center
   }

   .b302 h3 {
       font-family: DIN;
       font-weight: 700;
       font-size: 18px;
       line-height: 1;
       color: #000000;
       writing-mode: vertical-lr;
   }

   .b302 h4 {
       width: 436px;
       text-align: justify;
       margin-left: 30px;
       padding-left: 30px;
       font-size: 16px;
       line-height: 2;
       color: #383838;
       border-left: 1px solid #B8B7B7;
   }

   .box3 .lt .img {
       width: 100%;
       margin: 80px 0;
   }

   .box3 .number {
       display: flex;
       justify-content: space-between;
   }

   .box3 .number .item {
       display: flex;
       flex-direction: column;
       align-items: center;
   }

   .box3 .number .item h1 {
       font-family: "Microsoft YaHei";
       font-weight: bold;
       font-size: 20px;
       line-height: 1;
       color: var(--color);
       display: flex;
       align-items: baseline;
   }

   .box3 .number .item h1 span {
       font-size: 42px;
       line-height: 1;
       color: var(--color);
       font-family: "Microsoft YaHei";
       font-weight: bold;
   }

   .box3 .number .item:hover h1 span {
       background: linear-gradient(128deg, #0BB3FF 25%, #096994 80%);
       -webkit-background-clip: text;
       -webkit-text-fill-color: transparent;
       background-clip: text;
       text-fill-color: transparent;
   }

   .box3 .number .item h2 {
       margin-top: 10px;
       font-size: 18px;
       line-height: 1;
       color: #5F5F5F;
   }

   .box3 .number .item:nth-child(3) h1 {
       font-size: 42px;
   }

   .box3 .rt {
       width: 38%;
       position: relative;
   }

   .box3 .rt .bj {
       width: 100%;
       position: relative;
       z-index: 1;
   }

   .box3 .rt .icon {
       position: absolute;
       width: 100%;
       height: 100%;
       z-index: 2;
       font-size: 16px;
       line-height: 1;
       color: #FFFFFF;
       display: flex;
       align-items: center;
       justify-content: center;
       flex-direction: column;
   }

   .box3 .rt .icon .img {
       position: relative;
       margin-bottom: 20px;
       display: flex;
       align-items: center;
       justify-content: center;
   }

   .box3 .rt .icon .img .icon4 {
       position: absolute;
   }

   .box3 .rt .icon .img .icon3 {
       position: relative;
       animation: text 1s linear infinite;
   }

   .box3video {
       padding: 10vw;
       width: 100%;
       height: 100%;
       background: #000000cc;
       position: fixed;
       top: 0;
       left: 0;
       z-index: 999;
       display: none;
       align-items: center;
       justify-content: center;
   }

   .box3video video {
       max-width: 100%;
       max-height: 100%;
       object-fit: contain;
   }

   .box3video.cur {
       display: flex;
   }

   @media (max-width: 1440px) {
       .box3 .lt {
           width: 60%;
           margin-top: 60px;
       }

       .box3 .lt .img {
           margin: 60px 0;
       }

   }

   @media (max-width: 1200px) {


       .box3 .lt {
           margin: 60px 0;
           width: 45%;
       }

       .box3 .rt {
           height: 100%;
           width: 50%;
           position: relative;
       }

       .box3 .text {
           display: flex;
           justify-content: space-between;
           flex-direction: column;
       }

       .b301 h2 {
           font-size: 16px;
           margin-top: 15px;
       }

       .b302 {
           display: flex;
           align-items: flex-start;
           flex-direction: column;
       }

       .b302 h3 {
           margin-top: 15px;
           font-size: 16px;
           writing-mode: unset;
       }

       .b302 h4 {
           width: 100%;
           margin-left: 0;
           padding-left: 0;
           margin-top: 10px;
           padding-top: 10px;
           font-size: 16px;
           line-height: 1.5;
           border-top: 1px solid #B8B7B7;
           border-left: 0px solid #B8B7B7;
       }

       .box3 .lt .img {
           margin: 30px 0 10px;
       }

       .box3 .number {
           display: flex;
           flex-wrap: wrap;
           justify-content: space-between;
       }

       .box3 .number .item {
           width: 50%;
           margin: 10px 0
       }

       .box3 .number .item h1 span {
           font-size: 32px;
           line-height: 1;
           color: var(--color);
           font-family: dy;
       }

       .box3 .number .item:nth-child(3) h1 {
           font-size: 24px;
       }
   }

   @media (max-width: 720px) {
       .box3 {
           padding: 0 var(--container);
       }

       .box3 .lt {
           margin: 60px 0 30px;
           width: 100%;
       }

       .box3 .rt {
           width: 100%;
       }
   }