.sub-title {
  font-size: 48px;
  font-weight: 500;
  color: var(--primary-color);
  padding: 75px 0 20px;
  text-align: center;
}

.banner h1 {
  font-size: 48px;
  font-weight: 700;
}

/* 公司介绍 */
.company-introduction {
  padding: 0 6%;
}
.company-introduction h4 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 50px;
}
.company-introduction p {
  text-indent: 2em;
  margin-bottom: 30px;
  font-size: 18px;
  line-height: 2;
}

.company-introduction-content {
  padding: 40px 0 90px;
}

.intro-left {
  margin-right: 8%;
  width: 50%;
  margin-top: 30px;
}
.intro-right {
}
.intro-right img {
  border-radius: 20px;
}

/* 业务 */
.business {
  background-color: #f3f6f7;
  padding-bottom: 105px;
}

.business-list {
  margin: 60px 10%;
}
.business-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #fff;
  width: 460px;
  height: 310px;
  border-radius: 20px;
  margin: 0 30px;
  padding: 28px;
  transition: all 0.3s;
}
.business-item:hover .business-title {
  color: var(--primary-color);
}
.business-item:hover .business-intro {
  color: var(--primary-color);
}
.business-icon {
  width: 100px;
  height: 100px;
  margin: 18px 0;
  object-fit: contain;
}
.business-title {
  font-size: 36px;
  font-weight: 700;
  color: #000;
  font-size: 26px;
  text-align: center;
  margin-bottom: 14px;
}
.business-intro {
  font-size: 16px;
  color: #8c8c8c;
  text-align: center;
}

/* 客户 */
.customer-list {
  padding: 0 10% 90px;
}
.customer .sub-title {
  padding: 80px 86px;
}

.customer-item {
  width: 24%;
  /* height: 468px; */
  border-radius: 20px;
  margin-right: 1%;
}
.customer-item:last-child {
  margin-right: 0;
}

/* 合作 */
.cooperation {
  background-color: #f3f6f7;
  padding: 90px 0;
}
.cooperation .sub-title {
  padding: 65px 0 75px;
}
.cooperation-list {
  padding: 0 180px;
}
.cooperation-item {
  width: 13.2%;
  height: 100px;
  margin: 0 4% 30px 0;
  padding: 6px 8px;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  background-color: #fff;
  border-radius: 8px;
}
.cooperation-item img {
  max-height: 100%;
}
.cooperation-item:nth-child(6n) {
  margin-right: 0;
}

/* 优势 */
.advantage {
  padding-bottom: 140px;
}
.advantage .sub-title {
  padding: 62px 0 80px;
}
.advantage-list {
  padding: 0 20%;
}
.advantage-item {
  flex: 1;
  text-align: center;
}
.advantage-item h5 {
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 16px;
  font-size: 48px;
}
.advantage-item p {
  color: rgba(102, 102, 102, 1);
  font-size: 16px;
  /* text-align: center; */
}

@media (max-width: 1500px) {
  .cooperation-item {
    height: 80px;
  }
}
@media (max-width: 1200px) {
  .sub-title {
    font-size: 38px;
  }
  .company-introduction p {
    line-height: 2;
  }
  .cooperation-list {
    padding: 90px;
  }
  .banner h1 {
    font-size: 30px;
  }
  .banner .white-line {
    height: 6px;
    width: 80px;
  }
}

@media (max-width: 992px) {
  .sub-title {
    font-size: 30px;
  }
  .company-introduction p {
    font-size: 16px;
  }
  .intro-left {
    margin-right: 4%;
    width: 50%;
    flex-shrink: 0;
  }
  .intro-right {
    display: flex;
    justify-content: center;
  }
  .intro-right img {
    object-fit: contain;
  }
  .business-list {
    margin: 30px 4%;
  }
  .business-item {
    margin: 0 15px;
    padding: 20px;
  }
  .cooperation-list {
    padding: 0 60px;
  }
  .advantage-item h5 {
    font-size: 30px;
  }
}

@media (max-width: 768px) {
  .sub-title {
    font-size: 18px;
    padding: 30px 0 0;
    font-weight: 700;
  }
  .customer .sub-title {
    padding: 30px 0;
  }
  .company-introduction-content {
    flex-direction: column-reverse;
    padding: 30px 0 50px;
  }
  .company-introduction p {
    font-size: 12px;
  }
  .business-title {
    font-size: 16px;
  }
  .business-intro {
    font-size: 12px;
  }
  .business-list {
    flex-wrap: wrap;
  }
  .intro-left {
    width: 100%;
    margin-right: 0;
  }
  .business-item {
    width: 100%;
    border-radius: 10px;
    height: 260px;
  }
  .business-item:first-child {
    margin-bottom: 30px;
  }
  .customer-item {
    width: 48%;
    margin: 0 0 2% 0;
  }
  .customer-item:nth-child(2n - 1) {
    margin-right: 2%;
  }
  .cooperation-list {
    padding: 0 30px;
  }
  .cooperation-item {
    width: 30%;
    margin: 0 5% 5% 0;
  }
  .cooperation-item:nth-child(6n) {
    margin-right: 5%;
  }
  .cooperation-item:nth-child(3n) {
    margin-right: 0;
  }
  .advantage-list {
    padding: 0 6%;
  }
  .advantage-item h5 {
    font-size: 20px;
  }
  .advantage-item p {
    font-size: 14px;
  }
  .advantage {
    padding-bottom: 80px;
  }
  .advantage-item {
    margin-right: 10px;
  }
  .advantage-item:last-child {
    margin-right: 0;
  }
  .business {
    padding-bottom: 60px;
  }
  .cooperation {
    padding: 60px 0;
  }
  .banner h1 {
    font-size: 18px;
  }
  .banner .white-line {
    height: 3px;
    width: 40px;
  }
  .banner .banner-title {
    transform: translate(-50%, calc(-50% + 30px));
  }
  .business-icon {
    margin-top: 0;
  }
  .advantage .sub-title {
    padding: 30px 0;
  }
  .advantage {
    padding-bottom: 60px;
  }
}