.box {
  background: #f5f5f5;
  padding-bottom: 0;
}
.box_1 {
  padding-bottom: 110px;
}
.box h3 {
  font-weight: bold;
  font-size: 40px;
  color: #073682;
  margin-bottom: 50px;
}
.contact-top {
  display: flex;
  justify-content: stretch;
  padding: 0 0.3rem;
}
.contact-l {
  background: #ffffff;
  padding: 51px 51px;
  width: 43%;
  height: 640px;
  flex-shrink: 0;
  -webkit-flex-shrink: 0;
}
.contact-l h6 {
  font-weight: bold;
  font-size: 26px;
  margin-bottom: 29px;
}
.contact-l div {
  display: flex;
  align-items: center;
  margin-bottom: 21px;
}
.mt {
  margin-top: 38px;
}
.contact-l img {
  margin-right: 8px;
}
.contact-r {
  flex: 1;
}
.contact-tab {
  width: 100%;
  display: flex;
  justify-content: space-between;
}
.contact-tab-item {
  flex: 1;
  border-top: 2px solid #0078D2;
  padding: 32px 0;
  background: #0f73be;

  color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}
.contact-tab-item div {
  border-right: 1px solid #bcbcbc;
  padding: 0 49px;
  display: flex;
  width: 100%;
  justify-content: center;
  align-items: center;
  font-size: 24px;
  white-space: nowrap;
}
.contact-tab-item .last {
  border-color: #073682;
}
.contact-tab-item:hover {
  background: #fff;
  color: #111111;
}
.contact-tab-item:hover div {
  border-color: transparent;
}
.contact-tab-item.active {
  background: #fff;
  color: #111111;
}
.contact-tab-item.active div {
  border-color: transparent;
}
.contact-content {
  padding: 47px 50px;
  background: #fff;
}
.content-flex {
  display: none;
  flex-wrap: wrap;
}
.content-flex.active {
  display: flex;
}
.content-item {
  width: calc((100% - 57px) / 4);
  margin-right: 19px;
  padding: 32px 30px;
  background: #f5f5f5;
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
}
.content-item::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: #0f73be;
  transition: height 0.3s ease;
  z-index: 1;
}
.content-item:hover::before {
  height: 100%;
}
.content-item > * {
  position: relative;
  z-index: 2;
  transition: color 0.3s ease;
}
.content-item:hover p,
.content-item:hover span {
  color: #ffffff;
}
.content-item:nth-child(4n) {
  margin-right: 0;
}
.content-item p {
  font-weight: bold;
  font-size: 25px;
  color: #111111;
  margin-bottom: 31px;
}
.content-item span {
  font-size: 18px;
  color: #313131;
  line-height: 30px;
}
.content-item img {
  margin-top: 10px;
}

.box_2 {
  background: #ffffff;
  padding-top: 83px;
  padding-bottom: 52px;
}

.mes_box {
  margin-top: 60px;
}
.mes_box {
  width: 100%;
  display: flex;
  justify-content: left;
  align-items: center;
  flex-wrap: wrap;
}

.mes_box .inputs-row {
  width: 100%;
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
}
.mes_box .mes_w {
  height: 60px;
  background: #f8f8f8;
  margin-bottom: 20px;
  margin-right: 18px;
  border: none;
}
.mes_box .mes_w:nth-child(1),
.mes_box .mes_w:nth-child(2),
.mes_box .mes_w:nth-child(3) {
  width: calc((100% - 36px) / 3);
  flex-shrink: 0;
  margin-bottom: 20px;
}

.mes_box .mes_w:nth-child(3) {
  margin-right: 0;
}

.mes_box .mes_w:nth-child(4) {
  flex: 1;
  margin-right: 0;
}
.mes_box .mes_w.mes_input {
  border: none;
  color: #333;
  background: #f8f8f8;
  padding: 0 20px;
  height: 60px;
  font-size: 16px;
  outline: none;
  border-radius: 0px;
}
.mes_box .mes_w.mes_input::-webkit-input-placeholder {
  /* WebKit, Blink, Edge */
  color: #555;
}
.mes_box .mes_w.mes_input:-moz-placeholder {
  /* Mozilla Firefox 4 to 18 */
  color: #555;
}
.mes_box .mes_w.mes_input::-moz-placeholder {
  /* Mozilla Firefox 19+ */
  color: #555;
}
.mes_box .mes_w.mes_input:-ms-input-placeholder {
  /* Internet Explorer 10-11 */
  color: #555;
}
.mes_box .mes_w.mes_input::-ms-input-placeholder {
  /* Microsoft Edge */
  color: #555;
}

.mes_box .mes_w.dropdown .btn {
  width: 100%;
  outline: none !important;
  height: 60px;
  border: none !important;
  color: #333;
  background: #f8f8f8;
  border-radius: 0;
  line-height: 60px;
  padding: 0 12px 0 20px;
  font-size: 16px;
  box-shadow: none;
  opacity: 1 !important;
}

.mes_box .btn_box {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.mes_box .btn_box .submit_btn {
  width: 256px;
  outline: none !important;
  height: 60px;
  color: #fff;
  background: #002A70;
  border-radius: 0;
  line-height: 60px;
  padding: 0 20px;
  font-size: 20px;
  box-shadow: none;
  border-radius: 6px;
  border: none;
  cursor: pointer;
}
.mes_box .mes_text {
  width: 100%;
  margin-bottom: 38px;
  border: 1px solid #f8f8f8;
  background: #f8f8f8;
  color: #333;
  padding: 20px;
  border-radius: 0px;
  height: 270px;
  font-family: "微软雅黑";
  font-size: 16px;
  outline: none;
  resize: none;
}
.mes_box .mes_text::-webkit-input-placeholder {
  /* WebKit, Blink, Edge */
  color: #555;
}
.mes_box .mes_text:-moz-placeholder {
  /* Mozilla Firefox 4 to 18 */
  color: #555;
}
.mes_box .mes_text::-moz-placeholder {
  /* Mozilla Firefox 19+ */
  color: #555;
}
.mes_box .mes_text:-ms-input-placeholder {
  /* Internet Explorer 10-11 */
  color: #555;
}
.mes_box .mes_text::-ms-input-placeholder {
  /* Microsoft Edge */
  color: #555;
}
.mes_box .submit_btn {
  display: inline-block;
  width: 268px;
  height: 60px;
  background: #002A70;
  color: #fff;
  font-size: 20px;
  text-decoration: none;
  text-align: center;
  line-height: 60px;
  border-radius: 0px;
  margin: 0 auto;
}
.mes_box .submit_btn:hover {
  opacity: 0.9;
}
.head_one {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.head_one h5 {
  font-size: 40px;
  color: #000000;
  text-align: center;
  margin-bottom: 23px;
}
.head_one p {
  text-align: center;
  font-size: 16px;
margin-bottom: 34px;
  padding: 0 12%;
  width: 100%;
  color: #000000;
}
.head_one span {
  display: inline-block;
  width: 48px;
  height: 3px;
  background: #3081F8;

}
.bootstrap-select .dropdown-toggle .filter-option-inner-inner {
  color: #666;
}

/* 自定义下拉菜单样式 */
.custom-select {
  position: relative;
  height: 60px;
  background: #f8f8f8;
  cursor: pointer;
  z-index: 10;
}

.select-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 20px;
  font-size: 16px;
  color: #333;
  background: #f8f8f8;
  transition: all 0.3s ease;
}

.select-placeholder {
  color: #555;
}

.select-value {
  color: #333;
}

.select-arrow {
  width: 8px;
  height: 100%;
  background: url(../images/icon-r.png) no-repeat center center;
  background-size: contain;
  transition: transform 0.3s ease;
}

.custom-select.active .select-arrow {
  transform: rotate(90deg);
}

.select-options {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: #fff;
  border: 1px solid #eee;
  border-top: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  z-index: 100;
  max-height: 0;
  transition: max-height 0.3s ease;
}

.custom-select.active .select-options {
  max-height: 200px;
}

.select-option {
  padding: 15px 20px;
  font-size: 16px;
  color: #333;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.select-option:hover {
  background-color: #f0f0f0;
}