.top_bg {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  height: 50px;
  background-color: #222629;
  z-index: 100;
}
.top {
  position: relative;
  width: 1300px;
  height: 50px;
  margin: 0 auto;
  z-index: 100;
}
.top_height {
  height: 50px;
}
.logo {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 80px;
  font-size: 0;
}
.logo img {
  width: 100%;
}
.menu {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  margin-left: 240px;
}
.menu dl {
  position: relative;
  float: left;
  padding: 0 30px;
}
.menu dt {
  position: relative;
  font-size: 16px;
  color: #bdc8d2;
  line-height: 50px;
}
.menu dt:after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  border-top: 2px solid transparent;
}
.menu dt.has_child:before {
  content: "";
  position: absolute;
  right: -20px;
  top: 50%;
  margin-top: -4px;
  width: 12px;
  height: 8px;
  background-image: url("../img/arr_down_1.png");
}
.menu dl.on dt {
  color: #c59e3f;
  transition: 0.4s;
}
.menu dl.on dt:after,
.menu dl:hover dt:after {
  border-top-color: #c59e3f;
  transition: 0.4s;
}
.menu dl.on dt.has_child:before {
  background-image: url("../img/arr_down_hover_1.png");
  transition: 0.4s;
}
.menu dl:hover dt {
  color: #c59e3f;
  transition: 0.4s;
}
.menu dl:hover dt.has_child:before {
  background-image: url("../img/arr_down_hover_1.png");
  transition: 0.4s;
}
.menu dl dd {
  position: fixed;
  left: 0;
  right: 0;
  top: 50px;
  background-color: #222629;
  padding: 32px 0;
  border-top: 1px solid #535a62;
  opacity: 0;
  visibility: hidden;
  transition: 0.4s;
}
.menu dl:hover dd {
  opacity: 1;
  visibility: visible;
  transition: 0.4s;
}
.mp_list {
  /* margin: 0 30px; */
  margin: 0;
}
.mp_list,
.mp_list li,
.mp_list li p,
.mp_list li p a {
  display: flex;
  justify-content: center;
  line-height: 1;
  align-items: flex-start;
}
.mp_list li {
  padding: 0 14px;
  box-sizing: border-box;
  align-items: flex-start;
  text-align: left;
}
.mp_list li h3 {
  font-size: 16px;
  color: #fff;
  white-space: nowrap;
}
.mp_list li img {
  width: 8px;
  height: 12px;
  margin-left: 24px;
  margin-right: 14px;
  position: relative;
  top: 1px;
}
.mp_list li p {
  font-size: 14px;
  color: #bdc8d2;
  flex-direction: column;
  font-family: Arial;
}
.mp_list li p s {
  margin: 0 10px;
}
.mp_list li p a {
  margin-bottom: 14px;
}
.mp_list li p a:last-of-type {
  margin-bottom: 0;
}
.mp_list li p em {
  white-space: nowrap;
  min-width: 58px;
}
.mp_list li p u {
  white-space: nowrap;
  flex: 1;
}
.mp_list li p a:hover {
  color: #c59e3f;
  transition: 0.4s;
}
.mp_3 {
  align-items: flex-start;
}
.mp_2 {
  align-items: center;
}
.mp_2 li {
  border-left: 1px solid #535a62;
  width: 14%;
}
.mp_2 li:first-child {
  border-left: none;
  flex-direction: column;
  align-items: center;
  margin-right: 24px;
}
.mp_2 li:first-child img {
  width: 104px;
  height: 104px;
}
.mp_2 li:first-child h3 {
  text-align: center;
  margin-top: 12px;
}
.mp_solve li:last-child p {
  margin-left: 68px;
}
.mp_about li:last-child p {
  margin-left: -14px;
}
.top_contact {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 82px;
  height: 28px;
  line-height: 28px;
  padding-left: 16px;
  background-color: #c59e3f;
  border-radius: 2px;
  color: #fff;
  font-size: 15px;
  margin-right: 12px;
  text-align: center;
}
.top_contact::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  background-image: url("../img/contact_1.png");
}
#topMessageBnt:before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 18px;
  height: 18px;
  margin-left: -34px;
  background-image: url("../img/contact_1.png");
}
.top_contact:hover {
  filter: brightness(0.7);
  transition: 0.4s;
}

@media screen and (max-width: 768px) {
  .top {
    width: auto;
  }
  .logo {
    width: 68px;
    left: 12px;
  }
  .top_contact {
    width: auto;
    height: auto;
    padding-left: 0;
    border-radius: 0;
    right: 0;
    background-color: transparent;
  }
  .top_contact::before {
    content: none;
  }
  .top_contact a {
    display: none;
  }
  .top_contact i {
    width: 32px;
    height: 32px;
    background-image: url("../img/mo_tel.png");
    display: block;
  }


  .mo_menu {
    position: absolute;
    right: 56px;
    top: 50%;
    margin-top: -16px;
    width: 32px;
    height: 32px;
    background-image: url("../img/mo_menu.png");
  }
  .mo_menu.on {
    background-image: url("../img/mo_close.png");
  }
  .menu {
    top: 50px;
    right: 0;
    margin: 0;
    background-color: #222629;
    position: fixed;
    overflow-y: auto;
    display: none;
  }
  .menu dl {
    float: none;
  }
  .menu dl dd {
    top: 0;
    padding: 0;
    position: static;
    display: none;
    opacity: 1;
    visibility: visible;
  }
  .menu dl:hover dd {
    display: block;
  }
  .mp_list {
    margin: 0;
    display: block;
  }
  .mp_list li {
    padding: 24px 0;
    margin: 0;
    justify-content: flex-start;
    border-top: 1px solid #535a62;
  }
  .mp_list li:first-child {
    border-top: none;
  }
  .mp_list li h3 {
    font-size: 14px;
  }
  .mp_list li img {
    margin-left: 12px;
    margin-right: 8px;
  }
  .mp_2 li {
    width: 100%;
    border: none;
    padding: 0;
    display: block;
  }
  .mp_2 li:first-child {
    display: none;
  }
  .mp_solve li:last-child p {
    margin-left: 0;
  }
  .mp_about li:last-child p {
    margin-left: 0;
  }
  .mp_2 li p a {
    display: block;
    padding: 15px 24px;
    margin: 0;
    border-top: 1px solid #535a62;
    width: 100%;
    box-sizing: border-box;
  }
  .mp_2 li p a:first-child {
    border-top: none;
  }
}
/* 顶部 */