.section4 {
      background: #FFFFFF;
  }

  .section4 .title {
      font-weight: bold;
      font-size: 48px;
      line-height: 1;
      background: linear-gradient(91.02deg, #DF8900 2.11%, #E06300 50.52%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      text-fill-color: transparent;
  }

  @media (max-width: 1440px) {
      .section4 .title {
          font-size: 40px;
      }
  }

  @media (max-width: 992px) {
      .section4 .title {
          font-size: 32px;
      }
  }

  @media (max-width: 720px) {
      .section4 .title {
          font-size: 26px;
      }
  }

  @media (max-width: 640px) {
      .section4 .title {
          font-size: 24px;
      }
  }

  /* box4 */
  .section4 .container {
      height: 100%;
      display: flex;
      flex-direction: column;
  }

  .box4 {
      height: 100%;
      position: relative;
      margin-top: 30px;
  }

  .box4 .box4A {
      width: 45%;
      height: 100%;
      position: absolute;
      overflow: hidden;
      border-radius: 20px;
  }

  .box4 .box4A a {
      display: block;
      width: 100%;
      height: 100%;
      position: relative;
  }

  .box4 .box4A a img {
      position: relative;
      width: 100%;
      height: 100%;
      object-fit: cover;
  }

  .box4 .box4A a .text {
      width: 100%;
      position: absolute;
      z-index: 2;
      left: 0;
      bottom: 0;
      background: linear-gradient(180deg, rgba(50, 62, 62, 0) 10%, #323E3E 100%);
      padding: 30px 60px;
  }

  .box4 .box4A a .text h1 {
      font-weight: 400;
      font-size: 26px;
      line-height: 1.5;
      color: #FFFFFF;
      margin-bottom: 15px;
      font-weight: bold;
      overflow: hidden;
      display: -webkit-box;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
  }

  .box4 .box4A a .text .time {
      font-weight: 400;
      font-size: 16px;
      line-height: 1;
      color: #E0E0E0;
  }

  .box4 .box4B {
      width: 50%;
      height: 100%;
      position: relative;
      left: 50%;
      right: 0;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-content: space-between;
  }

  .box4 .box4B .item {
      display: block;
      position: relative;
      width: 45%;
      height: 45%;
      padding: 30px 10px 0;
      border-top: 1px solid #515E5E;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
  }

  .box4 .box4B .item::after {
      content: "";
      display: block;
      position: absolute;
      left: 0;
      top: -2px;
      width: 0%;
      height: 3px;
      background: var(--color);
      transition: 0.5s;
  }

  .box4 .box4B .item:hover::after {
      width: 100%;
  }

  .box4 .box4B .item h1 {
      font-weight: 700;
      font-size: 22px;
      line-height: 1.5;
      color: #515E5E;
      margin-bottom: 15px;
      overflow: hidden;
      display: -webkit-box;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
  }

  .box4 .box4B .item:hover h1 {
      color: var(--color);
  }

  .box4 .box4B .item h2 {
      font-weight: 400;
      font-size: 16px;
      line-height: 2;
      color: #757575;
      overflow: hidden;
      display: -webkit-box;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 3;
  }


  .box4 .box4B .item .time {
      font-weight: 400;
      font-size: 16px;
      line-height: 2;
      color: #757575;
  }

  /* 高 */
  @media (max-height: 700px) {
      .box4 .box4B .item h1 {
          overflow: hidden;
          display: -webkit-box;
          -webkit-box-orient: vertical;
          -webkit-line-clamp: 1;
      }

      .box4 .box4B .item h2 {
          overflow: hidden;
          display: -webkit-box;
          -webkit-box-orient: vertical;
          -webkit-line-clamp: 2;
      }
  }

  @media (max-height: 800px) {
      .box4 .box4B .item {
          width: 48%;
          height: 48%;
      }

      .box4 .box4B .item h2 {
          line-height: 1.5;
      }
  }


  @media (max-width: 1200px) {
      .box4 .box4B .item {
          width: 100%;
          padding: 20px 10px 0;
      }

      .box4 .box4B .item:nth-child(3),
      .box4 .box4B .item:nth-child(4) {
          display: none;
      }


      .box4 .box4B .item h1 {
          font-size: 18px;
          margin-bottom: 5px;
          overflow: hidden;
          display: -webkit-box;
          -webkit-box-orient: vertical;
          -webkit-line-clamp: 1;
      }

      .box4 .box4B .item h2 {
          overflow: hidden;
          display: -webkit-box;
          -webkit-box-orient: vertical;
          -webkit-line-clamp: 2;
      }

      .box4 .box4B .item .time {
          padding: 30px 0 30px;
          line-height: 1;
      }

      .box4 .box4A a .text {
          padding: 30px 20px;
      }

      .box4 .box4A a .text h1 {
          font-size: 20px;
      }


  }

  @media (max-width: 720px) {
      .box4 .box4A {
          width: 100%;
          height: 100%;
          position: relative;
      }

      .box4 .box4B .item:nth-child(3),
      .box4 .box4B .item:nth-child(4) {
          display: block;
      }

      .box4 .box4B {
          width: 100%;
          position: relative;
          left: 0;
          margin-top: 30px;
      }

      .box4 .box4B .item .time {
          padding: 30px 0 15px;
      }
  }

  @media (max-width: 640px) {
      .box4 .box4B .item .time {
          padding: 20px 0 10px;
      }

      .box4 .box4A a img {
          min-height: 260px;
      }
  }