main {
  margin-top: 5.75rem;
}
main .banner {
  height: 31rem;
  position: relative;
}
main .banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
main .banner span {
  color: #fff;
  font-weight: bold;
  position: absolute;
  left: 66%;
}
main .banner .sp1 {
  top: 39%;
  font-size: 2.75rem;
}
main .banner .sp2 {
  white-space: nowrap;
  top: 53%;
  font-size: 2rem;
}
main .nav {
  padding: 1% 5%;
  display: flex;
  align-items: center;
  background: url("/imgs/nvabg.png") no-repeat;
}
main .nav img {
  width: 1.25rem;
  margin-right: 0.81rem;
}
main .nav a {
  font-size: 0.88rem;
  color: #999;
}
main .nav span {
  font-size: 0.88rem;
  color: #5fa7ff;
}
main .product .title {
  padding: 3% 7%;
  align-items: center;
  display: flex;
  flex-direction: column;
}
main .product .title .prtopo {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
}
main .product .title .prtopo .mc {
  margin: 0 64px;
  text-align: center;
  width: calc(100% / 9);
  /* 减去间距的宽度 */
  cursor: pointer;
  margin-bottom: 1.57%;
  border: 1px solid #d7dbe0;
  padding: 1%;
  background-color: #edf0f3;
  border-radius: 6px;
}
main .product .title .prtopo .active {
  position: relative;
  border: none;
  background-color: #4293ee;
  color: #fff;
}
main .product .title .prtopo .active::after {
  content: "";
  position: absolute;
  width: 6.25rem;
  left: -2.81rem;
  bottom: -0.62rem;
  height: 6.25rem;
  background-size: contain;
  background-image: url("/imgs/waix.png");
  background-repeat: no-repeat;
}
main .product .bbox {
  display: flex;
  flex-wrap: wrap;
  padding: 0 7% 3% 7%;
}
main .product .bbox .new {
  display: flex;
  flex-direction: column;
  width: 31%;
  height: calc(31% * 0.75);
  /* 宽度的 0.75 */
  margin-right: 2.3%;
  margin-bottom: 2.3%;
}
main .product .bbox .new .img {
  overflow: hidden;
}
main .product .bbox .new .img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
main .product .bbox .new .text {
  box-sizing: border-box;
  transition: background-color 0.5s ease;
  display: flex;
  flex-direction: column;
  padding: 0 2.6rem;
}
main .product .bbox .new .text .sp1 {
  margin: 1.25rem auto;
  font-size: 1.13rem;
}
main .product .bbox .new .text .data {
  display: none;
  margin: 1.25rem 0;
  margin-top: 0;
  align-items: center;
  justify-content: space-between;
}
main .product .bbox .new .text .data .two {
  display: none;
  opacity: 0;
  width: 0rem;
  border-radius: 100%;
  height: 2.25rem;
  transition: background-image 0.5s ease;
}
main .product .bbox .new:nth-of-type(3n) {
  margin-right: 0;
}
main .product .bbox .new:hover {
  border: 1px solid #c2cfe140;
}
main .product .bbox .new:hover > .text {
  background: url("/imgs/ziz1997.png") no-repeat;
  background-size: cover;
}
main .product .pages {
  text-align: center;
  margin: 0 auto;
  margin-bottom: 10rem;
}
main .product .pages a {
  margin: 0 1rem;
}
main .product .pages .thisclass {
  color: #fff;
  background: #4293ee;
}
main .product .pages span {
  margin: 0 1rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid #4293ee;
}
@keyframes fade-out-in {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 0.5;
  }
  100% {
    opacity: 1;
  }
}
/* 窗口宽度<960,设计宽度=768 */
@media screen and (max-width: 959px) {
  main {
    margin-top: 0;
  }
  main .banner {
    height: 300px;
  }
  main .banner .sp1 {
    font-size: 20px;
  }
  main .banner .sp2 {
    white-space: inherit;
    font-size: 16px;
  }
  main .nav a {
    font-size: 14px;
  }
  main .nav span {
    font-size: 14px;
  }
  main .product .title {
    padding: 5%;
  }
  main .product .title .prtopo {
    justify-content: space-between;
  }
  main .product .title .prtopo .mc {
    width: 25%;
    margin: 0;
    font-size: 16px;
  }
  main .product .title .prtopo .active::after {
    display: none;
  }
  main .product .bbox {
    padding: 5%;
    padding-top: 0;
  }
  main .product .bbox .new {
    width: 100%;
    margin-bottom: 20px;
    margin-right: 0%;
  }
  main .product .bbox .new .img {
    height: 150px;
  }
  main .product .bbox .new .img img {
    height: 100%;
    object-fit: cover;
  }
  main .product .bbox .new .text {
    height: auto;
    padding: 4%;
    background: url("/imgs/ziz1997.png") no-repeat;
    background-size: cover;
  }
  main .product .bbox .new .text .sp1 {
    font-size: 16px;
  }
  main .product .bbox .new .text .data {
    display: none;
  }
  main .product .bbox .new .text .two {
    display: none;
  }
  main .product .bbox .new:nth-of-type(2n) {
    margin-right: 0;
  }
  main .product .pages {
    margin-bottom: 5%;
  }
}
<!--耗时1794240659.0262秒-->