.home__ban {
  min-height: 500px;
  font-size: 0; }
  .home__ban-img {
    width: 100%; }

.home__title {
  margin: 40px auto;
  text-align: center;
  font-size: 46px;
  font-weight: 700;
  color: #E94709;
  line-height: 100px; }

.home__introduce {
  overflow: hidden;
  position: relative;
  width: 1200px;
  margin: 0 auto; }

.home .introduce__img {
  width: 459px;
  height: 469px;
  float: left;
  background: url(../image/home/introduce.png) no-repeat; }

.home .introduce__about {
  width: 680px;
  float: right; }

.home .introduce__title {
  font-size: 30px;
  font-weight: 700;
  color: #2E2E2E;
  line-height: 32px;
  margin-bottom: 10px; }

.home .introduce__nr {
  font-size: 18px;
  color: #5C5F5F;
  line-height: 32px;
  text-align: justify;
  width: 1360px;
  position: relative;
  height: 420px;
  overflow: hidden; }

.home .introduce__nr-page-box {
  position: absolute;
  left: 0;
  right: 0; }

.home .introduce__nr-page {
  box-sizing: border-box;
  width: 680px;
  float: left; }

.home .page {
  position: absolute;
  right: 0;
  bottom: 0; }

.home__menu {
  font-size: 26px;
  line-height: 32px;
  font-weight: 700;
  height: 338px;
  width: 1041px;
  margin: 90px auto; }

.home__menuli {
  color: #fff;
  /*padding-top: 20px;*/
  box-sizing: border-box;
  width: 267px;
  height: 338px;
  display: block;
  float: left;
  margin-right: 120px;
  border-radius: 35px;
  transition: all 0.3s; }
  .home__menuli-span {
    position: absolute;
    margin-top: 20px;
    margin-left: 14px;
    z-index: 2;
  }
  .home__menuli_black {
    position: absolute;
    width: 267px;
    height: 65px;
    /*padding-top: 200px;*/
    z-index: 1;
    border-radius: 35px 35px 0 0;
    background-color: rgba(128, 128, 128, 0.7); /* 灰色半透明背景 */
  }
  .home__menuli:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px 0 rgba(95, 101, 105, 0.1);
    color: #fff; }

.home__menuli--about {
  background: url(../image/home/about.png) no-repeat;
    background-size: cover;
}

.home__menuli_a {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 20%; /* 设置banner高度为背景图的一半 */
    background-color: rgba(128, 128, 128, 0.5); /* 灰色半透明背景 */
    z-index: 1; /* 确保 banner 在背景图上方显示 */
    border-top-left-radius: 35px;
    border-top-right-radius: 35px;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.home__menuli--culture {
  background: url(../image/home/culture.png) no-repeat;
    background-size: cover;}

.home__menuli--contact {
  background: url(../img/home/contact.png) no-repeat;
    background-size: cover;}

.home__menuli--product {
  background: url(../image/home/product.png) no-repeat;
    background-size: cover;}

.home__menuli--last {
  margin-right: 0; }

.home__purpose {
  color: #fff;
  text-align: center;
  font-size: 48px;
  height: 157px;
  line-height: 157px;
  width: 100%;
  background: url(../img/home/red-bg.png) center repeat-x; }

.navbar-scrolled {
    background-color: #333; /* 向下滚动后的颜色 */
}