* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.main {
  width: 100%;
  height: auto;
}

/* banner */
.banner {
  width: 100%;
  height: 44.625rem;
  color: #fff;
  padding-top: 10.75rem;
  padding-right: 22.5rem;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
}

.banner .title {
  font-size: 4.5rem;
  text-align: right;
  letter-spacing: 0.625rem;
}

.banner .list {
  font-size: 1.5rem;
  display: flex;
  margin-top: 2.5rem;
  justify-content: flex-end;
}

.banner .list .demo {
  display: flex;
  align-items: center;
  margin-left: 2.5rem;
  font-size: 1.5rem;
}

.banner .list .demo span {
  margin-left: 1.25rem;
}

.banner .list .demo img {
  width: 1.375rem;
  height: 1.375rem;
}

/* 面包屑 */
.breadcrumb {
  width: 100%;
  height: 2.625rem;
  border-bottom: 1px solid #ececec;
}

.breadcrumb .title {
  margin: 0 auto;
  width: 87.5rem;
  height: 2.625rem;
  text-align: left;
  color: #1683e8;
  display: flex;
  align-items: center;
  font-size: 0.875rem;
}

.breadcrumb span {
  color: #717171;
  cursor: pointer;
}

/* 方案概述 */
.item {
  padding: 5rem 0 2.5rem;
  display: flex;
  flex-direction: column;
}

.item .title {
  text-align: center;
  font-size: 2.25rem;
  color: #262626;
  margin-bottom: 3.75rem;
}

.overview {
  background-color: #f4f8ff;
}

.item .content {
  width: 87.5rem;
  height: 21.875rem;
  margin: 0 auto;
  display: flex;
  margin-bottom: 5rem;
}

.content .image {
  width: 50%;
  overflow: hidden;
}

.content .image img {
  width: 100%;
}

.item .content .right {
  width: 50%;
  padding: 2.5rem 3.125rem;
  background-color: #e7f0fe;
  color: #575757;
  font-size: 1.125rem;
  line-height: 1.8;
  letter-spacing: 0.313rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.item .videos {
  width: 87.5rem;
  height: auto;
  margin: 0 auto;
  border-radius: 0.5rem;
  overflow: hidden;
}

.item .videos video {
  width: 100%;
}

/* 挂钩监测概述 */
.couple {
  background-color: #fff;
}

/* 包号识别方案概述 */
.identify {
  background-color: #f4f8ff;
}

/* 硬件产品 */
.product .list {
  width: 87.5rem;
  padding-bottom: 2.5rem;
  display: flex;
  align-items: center;
  margin: 0 auto;
  background-color: #f4f8ff;
}

.product .left {
  width: 48.25rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product .left img {
  width: 38.75rem;
}

.product .right {
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding-top: 5.875rem;
  font-size: 1.5rem;
  color: #262626;
  letter-spacing: 0.125rem;
}

.product .right .bottom {
  display: flex;
  flex-direction: column;
  margin-top: 1.875rem;
}

.product .bottom .t1 {
  display: flex;
  align-items: center;
  font-size: 1rem;
  color: #666;
  margin-bottom: 1.625rem;
}
.product .bottom .t1 a {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product .t1 span {
  margin-left: 0.625rem;
}

.product .t1 img {
  width: 1rem;
}

.product .more {
  width: 9.75rem;
  height: 2.25rem;
  border: 1px solid #a2a2a2;
  border-radius: 0.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #5b5b5b;
  font-size: 0.875rem;
}

.product .more span {
  margin: 0;
  margin-right: 1.125rem;
}

@media screen and (max-width: 1400px) {
  .banner {
    padding-top: 5.375rem;
    padding-right: 7.25rem;
  }

  .breadcrumb {
    width: 100%;
    padding: 0 1.25rem;
  }

  .breadcrumb .title {
    width: 100%;
  }

  .item {
    padding: 5rem 1.25rem 2.5rem;
  }

  .item .content {
    width: 100%;
    height: auto;
  }

  .content .image img {
    height: 100%;
    width: auto;
  }

  /* 视频 */
  .item .videos {
    width: 100%;
  }

  .product .list {
    width: 100%;
  }

  .product .left {
    width: 60%;
  }

  .product .left img {
    width: 25rem;
  }
}

@media screen and (max-width: 767px) {
  body {
    font-size: 0.5rem;
  }

  .banner {
    padding-top: 2.188rem;
    padding-left: 2.188rem;
    height: 17.688rem;
  }

  .banner .title {
    text-align: left;
    font-size: 2.25rem;
  }

  .banner .list {
    flex-direction: column;
    align-items: flex-start;
    margin-top: 1.25rem;
  }

  .banner .list .demo {
    font-size: 1.125rem;
    margin-bottom: 0.625rem;
    margin-left: 0;
  }

  .breadcrumb {
    width: 100%;
    display: flex;
    align-items: center;
  }

  .breadcrumb .title {
    width: 100%;
  }

  .item {
    padding: 1.25rem;
  }

  .item .title {
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
  }

  .item .content {
    width: 100%;
    height: auto;
    /* padding: 0 2.5rem; */
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 1.25rem;
  }

  .content .image {
    width: 100%;
  }

  .content .image img {
    width: 100%;
  }

  .item .content .right {
    padding: 1.25rem;
    width: 100%;
    font-size: 0.75rem;
  }

  .item .videos {
    width: 100%;
    /* padding: 0 2.5rem; */
  }

  /* 产品 */
  .product .list {
    /* flex-direction: column; */
    height: auto;
    align-items: center;
  }

  .product .left {
    width: 45%;
    height: 100%;
    padding: 2.5rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .product .left img {
    width: 70%;
    height: auto;
  }

  .product .right {
    padding: 1.25rem;
    width: 55%;
  }

  .product .right p {
    font-size: 1rem;
  }

  .product .right .bottom {
    margin-top: 0.625rem;
  }

  .product .bottom .t1 {
    font-size: 0.75rem;
    margin-bottom: 0.625rem;
  }

  .product .more {
    width: 8.125rem;
    height: auto;
    border-radius: 0.25rem;
    padding: 0.313rem 0;
  }
}

@media screen and (max-width: 340px) {
  body {
    font-size: 0.5rem;
  }

  .product .list {
    flex-direction: column;
  }

  .product .left,
  .product .right {
    width: 100%;
  }
  .product .left {
    padding: 1.25rem 0;
  }
}