.container-fluid {
  overflow: hidden;
}
.banner {
  height: 6.5rem;
}
.banner img {
  width: 100%;
  height: 100%;
}
.main-nav {
  font-size: 0.15rem;
  line-height: 0.28rem;
  color: #000;
  font-family: "Arial";
  padding: 0.2rem 0 0.2rem 1rem;
}
.main-nav a {
  color: #000;
  font-weight: bold;
}
.brand {
  height: 7.3rem;
  padding: 1.1rem 1.55rem;
  display: flex;
}
.brand .brand-left {
  margin-right: 0.3rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}
.brand .brand-left img {
  width: 8.04rem;
  height: 3.73rem;
}
.brand .brand-left h3 {
  font-family: Helvetica;
  font-weight: bold;
  font-size: 0.8rem;
  line-height: 0.68rem;
  position: absolute;
  top: 0;
  left: 0;
}
.brand .brand-right {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 3.73rem;
}
.brand .brand-right img {
  width: 4.04rem;
  height: 0.48rem;
  margin-bottom: 0.9rem;
}
.brand .brand-right p {
  font-family: "Arial";
  font-size: 0.15rem;
  line-height: 0.2rem;
}
.brand .brand-right p span {
  display: none;
}
.master {
  height: 3.73rem;
  display: flex;
  padding: 0 1.57rem 0 1.5rem;
  margin-bottom: 2rem;
  justify-content: space-between;
}
.master .master-left {
  width: 7.6rem;
  flex: 0 0 auto;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.master .master-left p {
  font-size: 0.15rem;
  line-height: 0.2rem;
  color: #000;
  font-family: "Arial";
}
.master .master-left p:first-of-type {
  margin-bottom: 0.28rem;
}
.master .master-left .card {
  color: #000;
  margin-bottom: auto;
}
.master .master-left .card h3 {
  font-size: 0.4rem;
  line-height: 0.42rem;
  font-family: "Helvetica";
  font-weight: bold;
}
.master .master-left .card h5 {
  font-family: "Helvetica";
  font-weight: bold;
  font-size: 0.3rem;
  line-height: 0.42rem;
}
.master .master-right {
  width: 8.02rem;
}
.master .master-right .card-img {
  width: 100%;
  height: 100%;
}
.idea {
  height: 5.15rem;
  padding: 0 1.55rem 1.9rem;
  display: flex;
  justify-content: space-between;
}
.idea .idea-item {
  display: flex;
}
.idea .idea-left {
  width: 3.24rem;
  height: 3.24rem;
  margin-right: 0.25rem;
}
.idea .idea-left img {
  width: 100%;
  height: 100%;
}
.idea .idea-right {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.idea .idea-right h4 {
  font-size: 0.35rem;
  line-height: 0.35rem;
  font-family: "Helvetica";
  font-weight: bold;
  letter-spacing: -0.02rem;
  margin-top: -0.05rem;
}
.idea .idea-right p {
  font-size: 0.15rem;
  line-height: 0.2rem;
  font-family: "Arial";
  margin-bottom: -0.05rem;
}
@media (max-width: 750px) {
  .banner {
    height: 10.5rem;
  }
  .brand {
    height: 13rem;
    flex-direction: column;
    padding: 1.38rem 0.4rem 0;
    position: relative;
    margin: 0;
  }
  .brand .brand-left {
    margin-bottom: 2.65rem;
  }
  .brand .brand-left img {
    width: 100%;
    height: auto;
  }
  .brand .brand-left h3 {
    font-size: 0.8552rem;
    line-height: 0.7697rem;
    top: 3rem;
  }
  .brand .brand-right img {
    top: 0.52rem;
    right: 0.4rem;
    width: 4.03rem;
    position: absolute;
  }
  .brand .brand-right p {
    font-size: 0.22rem;
    line-height: 0.3rem;
  }
  .brand .brand-right p span {
    display: inline-block;
  }
  .master {
    height: 9rem;
    padding: 0 0.38rem;
    flex-direction: column-reverse;
    justify-content: flex-end;
    margin: 0;
  }
  .master .master-right {
    width: 100%;
    margin-bottom: 0.35rem;
  }
  .master .master-left {
    width: 100%;
  }
  .master .master-left p {
    font-size: 0.22rem;
    line-height: 0.3rem;
  }
  .master .master-left p:first-of-type {
    width: 100%;
  }
  .master .master-left .card {
    left: 0.25rem;
    top: -3.1rem;
    bottom: auto;
    right: auto;
    text-align: left;
    position: absolute;
  }
  .idea {
    height: 11.4rem;
    flex-direction: column;
    padding: 0 0.3rem;
    justify-content: flex-start;
  }
  .idea .idea-right h4 {
    font-size: 0.4rem;
    line-height: 0.42rem;
  }
  .idea .idea-right p {
    font-size: 0.2rem;
    line-height: 0.3rem;
  }
  .idea .idea-item {
    margin-bottom: 1.2rem;
  }
  .idea .idea-item:nth-child(2) {
    flex-direction: row-reverse;
  }
  .idea .idea-item:nth-child(2) .idea-left {
    margin-left: 0.25rem;
    margin-right: 0;
  }
  .idea .idea-left {
    flex: 0 0 auto;
  }
}