.product .banner {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 500px;
  background: url(../../assets/images/product-banner.jpg) center/cover no-repeat;
  letter-spacing: 0;
  text-align: center;
}
.product .banner h1 {
  font-size: 54px;
  color: #ffffff;
  line-height: 60px;
}
.product .introduction {
  max-width: 1280px;
  margin: 0 auto;
  padding: 92px 0;
  text-align: center;
  letter-spacing: 0;
}
.product .introduction h2 {
  font-size: 36px;
  color: #000000;
  line-height: 40px;
  margin-bottom: 32px;
}
.product .introduction p {
  font-size: 24px;
  color: #555555;
  line-height: 28px;
}
.product .service {
  text-align: center;
  letter-spacing: 0;
}
.product .service li {
  padding: 100px 0 180px;
}
.product li:nth-child(odd) {
  padding: 60px 0 150px;
  background: #f5f5f7;
}
.product .service li img {
  width: 82px;
}
.product .service li h3 {
  margin: 24px 0;
  font-size: 32px;
  color: #000000;
  line-height: 40px;
}
.product .service li p {
  max-width: 1280px;
  margin: 0 auto;
  font-size: 24px;
  color: #555555;
  line-height: 28px;
}

@media (max-width: 1280px) {
  .product .introduction,
  .product .service li {
    padding-left: 24px;
    padding-right: 24px;
  }
}
@media (max-width: 768px) {
  .product .banner {
    height: 280px;
    padding-left: 15px;
    padding-right: 15px;
  }
  .product .banner h1 {
    font-size: 24px;
    line-height: 30px;
  }
  .product .introduction {
    padding-top: 24px;
    padding-bottom: 24px;
  }
  .product .introduction h2 {
    font-size: 18px;
    line-height: 24px;
  }
  .product .introduction p {
    font-size: 14px;
    line-height: 16px;
  }
  .product .service li {
    padding-top: 24px;
    padding-bottom: 24px;
  }

  .product .service li img {
    width: 40px;
  }
  .product .service li h3 {
    margin: 16px 0;
    font-size: 18px;
    line-height: 24px;
  }
  .product .service li p {
    font-size: 14px;
    line-height: 16px;
  }
}