/* banner区域样式 */
.banner {
  height: 40vh;
}

.banner img {
  height: 100%;
  width: 100%;
  object-fit: cover;
}

/* 导航样式 */
.nav {
  position: sticky;
  top: var(--header-height);
  background-color: var(--color-white);
  z-index: 9;
  border-bottom: 1px solid rgba(0, 0, 0, .12);
  margin-bottom: 30px;
}

.nav ul {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 60px;
  font-size: 16px;
}

.nav a {
  color: var(--color-black);
  margin: 0 30px;
}

.nav a.active {
  /* color: var(--color-blue-1); */
  color: var(--color-red-1);
  font-weight: bold;
}

/* 主要内容部分 */
.article .section {
  background-color: var(--color-white);
  overflow: auto;
}

.article .section:nth-of-type(2n) {
  background-color: var(--color-gray-5);
}

.section .title-line {
  position: relative;
  text-align: center;
}

.section .title-line a {
  position: absolute;
  top: calc((var(--header-height) + 80px + 20px) * -1);
}

.section .title-line .title {
  position: relative;
}

.section .title-line .title::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  bottom: -10px;
  height: 4px;
  background-color: var(--color-red-1);
}

.section .content {
  /* width: 80%; */
  margin: 0px auto;
  max-width: 1200px;
}

/* 核心产品 */
.core-products {
  overflow: hidden;
}

.core-products .description {
  text-align: center;
  color: var(--color-gray-1);
  font-size: 22px;
  margin: 25px 0;
  padding: 0 30px;
  line-height: 1.5;
}

.products-list {
  padding-bottom: 50px;
  width: 80%;
  margin: 0 auto;
}

.products-list .ul1 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: 40px;
  gap: 20px;
}

.products-list .ul1 li {
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  border-radius: 10px;
  padding: 20px;
  /* transition: all 0.3s ease; */
}

.products-list .ul1 li:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.16);
}

.products-list .ul1 li .iconfont {
  font-size: 50px;
  color: var(--color-red-1);
}

.products-list .ul1 li .title {
  font-weight: bold;
  margin: 20px 0;
}

.products-list .ul1 li .desc {
  color: var(--color-gray-2);
  line-height: 1.5;
}

.products-list .ul2 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
  gap: 20px;
}

.products-list .ul2 li {
  padding: 20px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  border-radius: 10px;
  color: var(--color-gray-2);
  /* transition: all 0.3s ease; */
}

.products-list .ul2 li:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.16);
}

.products-list .ul2 li .num {
  margin-bottom: 12px;
}

.products-list .ul2 li .num b {
  font-size: 30px;
  color: var(--color-red-1);
}

.products-list .ul2 li .num span {
  font-size: 18px;
}

.products-list .ul2 li .num sup {
  font-size: 24px;
}

.products-list .ul2 li .num .iconfont {
  font-size: 30px;
  color: var(--color-red-1);
  font-weight: bold;
}

/* 产品介绍 */
.introduction .item {
  background-color: var(--color-white);
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 10px;
}

.introduction .item .text-content .title {
  font-size: 20px;
  font-weight: bold;
  text-align: center;
}

.introduction .item .text-content .paragraph {
  margin-top: 20px;
  color: var(--color-gray-2);
  line-height: 1.5;
  text-indent: 2em;
}

.introduction .item .img img {
  cursor: zoom-in;
  border-radius: 10px;
}

.introduction .item:first-child .text-content {
  margin-bottom: 10px;
}

.introduction .item:first-child .img img {
  width: 100%;
}

.introduction .item:nth-child(2),
.introduction .item:nth-child(3) {
  display: flex;
  flex-direction: row-reverse;
}

.introduction .item:nth-child(2) .img {
  flex-basis: 55%;
  flex-shrink: 0;
  margin-left: 20px;
}

.introduction .item:nth-child(2) .img img {
  width: 100%;
}

.introduction .item:nth-child(2) .text-content .title {
  text-align: center;
}

.introduction .item:nth-child(3) {
  flex-direction: row;
}

.introduction .item:nth-child(3) .img {
  flex-basis: 55%;
  flex-shrink: 0;
  margin-right: 20px;
}

.introduction .item:nth-child(3) .img img {
  width: 100%;
}

.introduction .item:nth-child(3) .point li {
  position: relative;
}

.introduction .item:nth-child(3) .point li::after {
  content: '';
  position: absolute;
  left: 10px;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-gray-4);
}

/* 交付形式 */
.deliver {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0 40px;
}

.deliver ul {
  display: flex;
}

.deliver ul li {
  margin: 0 10px 20px;
  width: 350px;
  box-shadow: 0px 0px 12px rgba(0, 0, 0, .12);
  padding: 20px 20px;
  border-radius: 10px;
}

.deliver ul li .img {
  height: 100px;
  width: 100%;
  margin-bottom: 26px;
}

.deliver ul li img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.deliver ul li .title {
  font-size: 18px;
  font-weight: bold;
  text-align: center;
}

.deliver ul li p {
  position: relative;
  padding-left: 20px;
  line-height: 1.5;
  margin: 10px 0;
  display: flex;
}

.deliver ul li p::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-black);
}

.deliver ul li p .tag {
  display: inline-block;
  width: 90px;
  text-align: left;
  flex-shrink: 0;
}

.deliver ul.new-product li {
  position: relative;
  box-shadow: 0px 0px 12px rgba(0, 0, 0, .3);
  border-radius: 10px;
}

.deliver ul.new-product li a {
  display: block;
  color: inherit;
}

.deliver .new-product .special-offer {
  position: absolute;
  left: 0;
  top: 0;
}

@media screen and (max-width: 1440px) {
  /* banner区域样式 */

  /* 导航样式 */


  /* 主要内容部分 */
  .section .content {
    width: 90%;
  }

  /* 核心产品 */
  .products-list {
    width: 90%;
    padding-bottom: 30px;
  }

  .products-list .ul1 {
    margin-bottom: 30px;
  }

  .products-list .ul1 li .title {
    margin: 10px 0;
  }

  .products-list .ul2 li .num .iconfont,
  .products-list .ul2 li .num b {
    font-size: 26px;
  }

  .products-list .ul2 li .num {
    margin-bottom: 6px;
  }

  /* 产品介绍 */


  /* 交付形式 */
  .deliver ul li {
    width: initial;
  }
}

@media screen and (max-width: 1024px) {
  /* banner区域样式 */


  /* 导航样式 */
  .nav {
    margin-bottom: 0px;
  }

  /* 主要内容部分 */

  /* 核心产品区域的样式 */
  .products-list .ul1 {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-list .ul2 {
    grid-template-columns: repeat(3, 1fr);
  }

  /* 产品介绍 */
  .section .title-line {
    font-size: 20px;
  }

  .introduction .item .text-content .title {
    font-size: 18px;
  }

  .introduction .item:nth-child(2),
  .introduction .item:nth-child(3) {
    flex-direction: column-reverse;
  }

  .introduction .item:nth-child(2) .img {
    margin-top: 10px;
    margin-left: 0;
    flex-basis: initial;
  }

  .introduction .item:nth-child(3) .img {
    margin-top: 10px;
    margin-right: 0;
    flex-basis: initial;
  }

  /* 交付形式 */
  .deliver ul {
    flex-direction: column;
    width: 100%;
  }

  .deliver .desc {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .deliver ul li p {
    width: 340px;
  }
}

@media screen and (max-width: 768px) {
  /* banner区域样式 */


  /* 导航样式 */

  /* 核心产品 */
  /* 核心产品区域的样式 */
  .core-products .description {
    font-size: 18px;
  }
  .products-list .ul1 {
    grid-template-columns: repeat(1, 1fr);
  }

  .products-list .ul2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-list .ul1 {
    flex-direction: column;
  }

  .products-list .ul1 li {
    flex: initial;
    margin-bottom: 20px;
  }

  .products-list .ul2 {
    margin: 0 auto;
  }

  .products-list .ul2 li {
    min-width: 50%;
  }

  .products-list .ul2 li .num .iconfont,
  .products-list .ul2 li .num b,
  .products-list .ul2 li .num sup {
    font-size: 20px;
  }

  .products-list .ul2 li .num span {
    font-size: 16px;
  }


  /* 主要内容部分 */
  .introduction .item {
    padding: 20px
  }

  .introduction .item .text-content .paragraph {
    margin-top: 10px;
  }

  /* 产品介绍 */


  /* 交付形式 */
  .deliver ul li p {
    width: 100%;
  }

  .deliver ul li {
    margin: 0 0 20px;
  }

}