html,
body,
ul {
  margin: 0;
  padding: 0;
  font-family: PingFang SC;
  color: #005272;
}
a,
a:hover {
  text-decoration: none;
  color: #1C788F;
}
header {
  display: flex;
  align-items: center;
  width: 100%;
  height: 64px;
}
header .logo {
  height: 16px;
  padding-left: 32px;
}
main .banner {
  height: 320px;
  background: url(../img/bg.jpg) center;
  color: white;
  display: flex;
  justify-content: center;
}
main .banner .content {
  width: 100%;
  max-width: 1200px;
  margin: 0 120px;
  padding-top: 166px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
main .banner .content .title,
main .banner .content .sub-title {
  display: inline;
  background: #005272;
  padding: 4px;
  /* todo: check this */
  width: max-content;
}
main .banner .content .title {
  font-size: 44px;
  font-weight: 300;
  line-height: 55.31px;
}
main .banner .content .sub-title {
  font-size: 18px;
  font-weight: 400;
  line-height: 22.63px;
  margin-top: 4px;
}
main .about-us {
  display: flex;
  justify-content: center;
}
main .about-us .content {
  width: 100%;
  max-width: 1200px;
  margin: 0 120px;
  padding: 50px 0;
  background: url(../img/desc-bg.png) no-repeat right 57px;
  background-size: 15.5% auto;
}
main .about-us .content .desc1,
main .about-us .content .desc2 {
  width: 50%;
  padding: 6px;
  margin: 0 auto;
}
main .about-us .content .desc1 {
  font-size: 18px;
  font-weight: 400;
  line-height: 28.8px;
}
main .about-us .content .desc2 {
  font-size: 16px;
  font-weight: 300;
  line-height: 25.6px;
  color: #444444;
}
main .products {
  display: flex;
  justify-content: center;
  background: #ECF1F5;
  padding: 64px 0;
}
main .products .content {
  width: 100%;
  max-width: 1200px;
  margin: 0 120px;
}
main .products .content .title {
  font-style: normal;
  font-weight: 300;
  font-size: 28px;
  line-height: 35px;
  color: #005272;
  margin-bottom: 32px;
}
main .products .content ul {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  justify-content: flex-start;
  margin: -12px;
}
main .products .content ul li {
  background: white;
  border-radius: 8px;
  width: calc((100% - 72px)/3);
  margin: 12px;
}
main .products .content ul li .icon {
  text-align: center;
  padding: 32px 0;
}
main .products .content ul li .link {
  margin: 0 16px 16px 16px;
  min-height: 24px;
  padding-right: 24px;
  background: url(../img/expand_circle_right.svg) no-repeat right;
}
main .products .content ul li .link a {
  display: block;
}
main .brands {
  display: flex;
  justify-content: center;
  padding: 64px 0;
}
main .brands .content {
  width: 100%;
  max-width: 1200px;
  margin: 0 120px;
}
main .brands .content .title {
  font-style: normal;
  font-weight: 300;
  font-size: 28px;
  line-height: 35px;
  color: #005272;
  margin-bottom: 32px;
}
main .brands .content ul {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  list-style: none;
  justify-content: flex-start;
  margin: -12px;
}
main .brands .content ul li {
  background: white;
  width: calc((100% - 120px)/5);
  margin: 12px;
  text-align: center;
}
footer {
  font-family: PingFang SC;
  font-size: 12px;
  font-weight: 400;
  line-height: 16.8px;
  text-align: center;
  color: #444444;
  padding: 8px;
}
footer a,
footer a:hover {
  color: #444444;
}
@media screen and (min-width: 1680px) {
  main .banner {
    background-size: 100% auto;
  }
}
@media screen and (max-width: 1200px) {
  main .brands .content ul li img {
    width: 100%;
    max-width: max-content;
  }
}
@media screen and (max-width: 720px) {
  header .logo {
    padding-left: 20px;
  }
  main .banner .content,
  main .about-us .content,
  main .products .content,
  main .brands .content {
    margin: 0 20px;
  }
  main .about-us .content {
    background: none;
  }
  main .about-us .content .desc1,
  main .about-us .content .desc2 {
    width: 100%;
  }
  main .products .content ul li {
    width: 100%;
  }
  main .brands .content ul {
    margin: -6px;
  }
  main .brands .content ul li {
    width: calc((100% - 24px)/2);
    margin: 6px;
  }
  main .brands .content ul li img {
    width: auto;
  }
}
@media screen and (max-width: 440px) {
  main .brands .content ul li img {
    max-width: 90%;
  }
}