/* 框架 */
     section {
         position: relative;
         overflow: hidden;
         width: 100%;
         padding: 90px 0;
     }

     @media (max-width: 1200px) {
         section {
             padding: 60px 0;
         }
     }

     @media (max-width: 720px) {
         section {
             padding: 45px 0;
         }
     }

     /* 标题 */
     .indexTitle {
         display: flex;
         flex-direction: column;
     }

     .indexTitle h1 {
         font-weight: bold;
         font-size: 48px;
         color: #333;
     }

     .indexTitle h2 {
         font-weight: bold;
         font-size: 22px;
         color: #c4c4c4;
     }



     @media (max-width: 1200px) {
         .indexTitle h1 {
             font-size: 38px;
         }

         .indexTitle h2 {
             font-size: 18px;
         }
     }

     @media (max-width: 720px) {
         .indexTitle h1 {
             font-size: 28px;
         }

         .indexTitle h2 {
             font-size: 14px;
         }
     }