.main {
  width: 100%;
}

.content-wrap {
  width: 1440px;
  max-width: 90%;
  min-width: 75%;
  overflow: hidden;
  margin: 0 auto;
}

.title-box {
  text-align: center;
  margin: 100px 0;
  animation: fadeInDown 1s;
  color: #333;
}

.title-box h1 {
  line-height: 1.5;
}

.title-box p {
  line-height: 2;
}

.title-box a {
  color: #333;
}

.content-main {
  width: 100%;
  display: flex;
  justify-content: space-between;
  margin-bottom: 146px;
}

.content-main .left {
  width: 53.056%;
  display: flex;
  flex-direction: column;
}

.content-main .left .text {
  margin-top: 40px;
}

.content-main .right {
  width: 45.139%;
  display: flex;
  flex-direction: column;
  padding-top: 70px;
}

.content-main .right .pic {
  margin-top: 70px;
}

.content-main .text {
  width: 85%;
  margin: 0 auto;
}

.content-main .pic {
  position: relative;
  width: 100%;
  padding-bottom: 100%;
  overflow: hidden;
}

.content-main .pic:hover img {
  transform: scale(1.1);
}

.content-main .pic img {
  position: absolute;
  width: 100%;
}

.content-main h2 {
  line-height: 1.6;
  color: #333;
  margin-bottom: 10px;
}

.content-main p {
  line-height: 1.5;
  color: #666;
}

.case {
  position: relative;
  width: 100%;
  margin: 0 auto;
  background-image: url("/images/economy_city/bg.jpg");
  background-size: cover;
  padding: 6% 0 12%;
  background-position: center;
}

.case .swiper-box {
  position: relative;
  margin: 0 auto;
  width: 55%;
}

.case .swiper-container {
  width: 100%;
  padding-bottom: 56.15%;
}

.case .swiper-container .swiper-wrapper {
  position: absolute;
  width: 100%;
  height: 100%;
}

.case .swiper-container .swiper-wrapper .img-box {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-repeat: no-repeat;
}

.case .info-wrap {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
}

.case .item-content {
  display: none;
}

.case .item-content.active {
  display: block;
}

.case .item-content .sup {
  position: absolute;
  top: -9%;
  right: -6.5%;
  color: #ffffff;
  z-index: 10;
}

.case .item-content .sup h2 {
  line-height: 1;
  margin-bottom: 10px;
}

.case .item-content .sup p {
  line-height: 1.2;
}

.case .item-content .sub {
  position: absolute;
  top: 76.54%;
  left: 65.38%;
  width: 55.8%;
  max-height: 58%;
  min-height: 40%;
  height: 278px;
  background: #000;
  color: #ffffff;
  box-sizing: border-box;
  border-left: 12px solid red;
  padding: 4% 5%;
  letter-spacing: 1.5px;
  z-index: 10;
  overflow: hidden;
}

.case .item-content .sub p {
  width: 100%;
  height: 100%;
  overflow: hidden;
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
}

.swiper-btn {
  position: absolute;
  left: 0;
  top: 100%;
  width: 100%;
  padding-top: 20px;
  color: #fff;
  display: flex;
  align-items: center;
  z-index: 1;
}

.swiper-btn .prev-btn, .swiper-btn .next-btn {
  font-weight: bold;
  display: inline-block;
  cursor: pointer;
  vertical-align: middle;
}

.swiper-btn .pagination-fraction {
  width: auto;
  padding: 0;
  margin: 0 10px;
  line-height: 1;
}

@media all and (max-width: 1440px) {
  .case .swiper-box {
    width: 60%;
  }
  .case .item-content .sub {
    padding: 4% 3%;
  }
  .case .swiper-btn {
    font-size: 16px;
  }
  .case .swiper-btn .prev-btn, .case .swiper-btn .next-btn {
    font-size: 16px;
  }
}

@media all and (max-width: 1000px) {
  .main {
    min-width: 320px;
  }
  .title-box {
    margin: 15px 0;
  }
  .content-main {
    flex-direction: column;
    margin-bottom: 20px;
  }
  .content-main .left {
    width: 100%;
  }
  .content-main .left .text {
    margin-top: 15px;
  }
  .content-main .right {
    width: 100%;
    padding-top: 30px;
  }
  .content-main .right .pic {
    margin-top: 15px;
  }
  .content-main .text {
    width: 95%;
  }
  .case {
    padding: 120px 0 200px;
  }
  .case .swiper-box {
    width: 90%;
  }
  .case .item-content .sup {
    top: 0;
    width: 100%;
    transform: translateY(-120%);
    right: 0;
    display: flex;
    align-items: center;
  }
  .case .item-content .sup p {
    width: 60%;
    flex: 1;
    margin-left: 10px;
  }
  .case .item-content .sub {
    width: 100%;
    background: none;
    border: none;
    left: 0;
    top: 115%;
    padding: 20px 0;
    max-height: 150px;
  }
  .case .swiper-btn {
    position: absolute;
    left: 0;
    top: 100%;
    width: 100%;
    padding-top: 20px;
    color: #fff;
    font-size: 16px;
    display: flex;
    align-items: center;
    z-index: 1;
  }
  .case .swiper-btn .prev-btn, .case .swiper-btn .next-btn {
    font-weight: bold;
    display: inline-block;
    cursor: pointer;
    vertical-align: middle;
    font-size: 16px;
  }
  .case .swiper-btn .pagination-fraction {
    width: auto;
    padding: 0;
    margin: 0 10px;
    line-height: 1;
  }
}

@media all and (max-width: 760px) {
  .case {
    padding: 80px 0 200px;
  }
}