main {
  width: 1200px;
  margin: 0 auto;
  padding-bottom: 80px;
}

.content {
  display: flex;
}
.content .right-content {
  flex: 1;
}

.aside {
  width: 281px;
}
.aside-banner {
  position: relative;
  width: 281px;
  height: 90px;
}
.aside-banner img {
  width: 100%;
  height: 100%;
}
.aside-banner .aside-title {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 21px;
  line-height: 18px;
  font-weight: 500;
  color: #ffffff;
  z-index: 1;
}
.aside ul {
  width: 100%;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
}
.aside ul li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 23px;
  font-size: 18px;
  font-weight: 400;
  color: rgba(0, 0, 0, 0.65);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.aside ul li:last-of-type a {
  border-bottom: none;
}
.aside ul li a.active,
.aside ul li a:hover {
  font-weight: 500;
  color: #045afe;
}
.aside ul li a.active .arrow {
  display: flex;
}
.arrow {
  display: none;
  position: relative;
  width: 0;
  height: 0;
}
.arrow::before,
.arrow::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 1px;
  background-color: #045afe;
}
.arrow::before {
  transform: rotate(45deg);
  top: -3px;
  right: 0;
}
.arrow::after {
  transform: rotate(-45deg);
  bottom: -3px;
  right: 0;
}

.right-content {
  margin-left: 52px;
}
.right-content .main-title {
  display: flex;
  justify-content: space-between;
  font-weight: 500;
  font-size: 21px;
  line-height: 18px;
  padding-top: 17px;
  padding-bottom: 19px;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
  color: rgba(0, 0, 0, 0.65);
}
.right-content .name {
  position: relative;
  font-size: 20px;
  line-height: 29px;
  color: #333333;
}
.right-content .name-bg {
  position: absolute;
  bottom: 0;
  width: 260px;
  height: 12px;
  background: linear-gradient(
    270deg,
    rgba(4, 90, 254, 0) 0%,
    rgba(4, 90, 254, 0.25) 100%
  );
}
.right-content .info {
  display: flex;
  flex-wrap: wrap;
  font-size: 16px;
  line-height: 24px;
  font-weight: 400;
  margin-top: 40px;
  border-bottom: 1px dashed #D8E3FD;
}
.right-content .info .info-item {
  width: 33.3%;
  margin-bottom: 24px;
}
.right-content .info .label {
  color: rgba(0,0,0,0.85);
}
.right-content .info .value {
  color: rgba(0,0,0,0.65);
}

.right-content .textarea {
  font-size: 16px;
  line-height: 24px;
  margin-top: 40px;
}
.right-content .textarea .textarea-title {
  margin-bottom: 16px;
  color: rgba(0,0,0,0.85);
}
.right-content .textarea .text {
  text-indent: 2em;
  color: rgba(0,0,0,0.65);
}
.right-content .contact-us {
  margin-top: 40px;
  font-size: 16px;
  line-height: 24px;
}
.right-content .contact-us .contact-us-title{
  margin-bottom: 16px;
  color: rgba(0,0,0,0.85);
}
.right-content .contact-us .item {
  display: flex;
  align-items: center;
  margin-bottom: 24px;
}
.right-content .contact-us img {
  width: 20px;
  height: 20px;
  margin-right: 11px;
}