header {
  height: 136px;
}
header a {
  color: #000;
}
header a:hover {
  text-decoration: none;
}
header ul {
  margin-top: 90px;
}
header ul li {
  float: left;
  margin-left: 50px;
  font-size: 16.67px;
}
header ul li:nth-child(1) {
  margin-left: 0;
}
.wrap {
  max-width: 1200px;
  width: 94%;
  margin: 40px auto;
}
.banner_index .swiper-slide {
  position: relative;
}
.banner_index .swiper-slide img {
  width: 100%;
}
.banner_index .swiper-slide video {
  position: absolute;
  width: 100%;
  left: 0px;
  top: 50%;
  transform: translateY(-50%);
  object-fit: cover;
}
.banner {
  margin-bottom: 80px;
  width: 100%;
}
.banner video {
  width: 100%;
}
.needs {
  margin-bottom: 100px;
}
.needs .needs-t {
  width: 200px;
  line-height: 45px;
  height: 45px;
  margin: 0 auto;
  font-size: 29px;
  box-sizing: border-box;
  border: 2px solid #447e96;
  text-align: center;
}
.needs .needs-t-e {
  width: 195px;
  height: 20px;
  margin: 0 auto;
  font-family: 'Courier New', Courier, monospace;
  font-size: 17px;
  text-align: center;
  margin-bottom: 34px;
}
.needs .biaodan {
  width: 855px;
  margin: 0 auto;
  position: relative;
}
.needs .biaodan div {
  width: 370px;
  height: 44px;
  border: 1px solid #447e96;
  box-sizing: border-box;
  margin-bottom: 34px;
  line-height: 44px;
}
.needs .biaodan div p,
.needs .biaodan div input {
  float: left;
}
.needs .biaodan div p {
  margin-left: 10px;
}
.needs .biaodan div input {
  height: 40px;
  border: none;
  outline: none;
  font-size: 18px;
}
.needs .biaodan div:nth-child(5) {
  width: 100%;
  height: 135px;
}
.needs .biaodan div:nth-child(5) textarea {
  width: 650px;
  height: 115px;
  margin-top: 8px;
  resize: none;
  border: none;
  outline: none;
  font-size: 20px;
}
.needs .biaodan .tijiao {
  position: absolute;
  bottom: -22%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 232px;
  height: 50px;
  line-height: 50px;
  background-color: #447e96;
  text-align: center;
  display: block;
  color: #fff;
  font-size: 26px;
  cursor: pointer;
}
.needs .biaodan .tijiao:hover {
  background-color: #ccc;
}
footer {
  width: 100%;
  height: 330px;
  background: #183243;
}
footer a:hover {
  text-decoration: none;
}
footer .massage {
  padding-top: 42px;
  padding-left: 66px;
  box-sizing: border-box;
}
footer .massage .conpany h4 {
  font-size: 31.5px;
  margin-bottom: 60px;
}
footer .massage .conpany h4,
footer .massage .conpany p {
  color: #fff;
}
footer .massage .conpany a{
  color: #fff;
}
footer .massage .conpany p {
  font-size: 12px;
}
footer .massage .yewu {
  width: 490px;
  margin-left: 20px;
}
footer .massage .yewu .yewu-t {
  font-size: 25px;
  color: #fff;
  text-align: center;
  margin-bottom: 40px;
}
footer .massage .yewu .yewu-b dl {
  width:30%;
  float: left;
  margin-left: 12px;
}
footer .massage .yewu .yewu-b dl dd {	
  margin-top: 15px;
  width: 84px;
}
footer .massage .yewu .yewu-b dl dd a {
  display:block;
  width:150%;
  color: #fff;
  font-size: 13.14px;
}
footer .massage .erwei {
  width: 250px;
  margin-top: 90px;
}
footer .massage .erwei .fuwuhao {
  margin-right: 30px;
}
footer .massage .erwei p {
  color: #fff;
  text-align: center;
  font-size: 16.67px;
}
@media only screen and (min-width: 320px) and (max-width: 767px) {
  header {
    display: none;
  }
  .w {
    width: 100%;
  }
  .header-m {
    display: block !important;
    position: relative;
  }
  .header-m .menulist {
    z-index: 1;
    width: 100%;
    background-color: white;
    z-index: 5;
    position: absolute;
    padding: 30px;
    box-sizing: border-box;
    top: 54px;
    display: none;
  }
  .header-m .menulist li {
    height: 50px;
    line-height: 50px;
    text-align: center;
    border-bottom: 1px dotted #ccc;
  }
  .banner {
    margin-bottom: 40px;
  }
  .needs {
    margin-bottom: 40px;
    padding: 20px;
    box-sizing: border-box;
  }
  .needs .needs-t {
    width: 200px;
    line-height: 30px;
    height: 30px;
    font-size: 20px;
  }
  .needs .needs-t-e {
    margin-bottom: 8px;
  }
  .needs .needs-t-b {
    width: 60px;
    height: 5px;
    margin-bottom: 20px;
  }
  .needs .biaodan {
    width: 100%;
  }
  .needs .biaodan div {
    width: 100%;
  }
  .needs .biaodan div p {
    font-size: 12px;
  }
  .needs .biaodan div:nth-child(5) {
    width: 100%;
    padding: 5px;
    box-sizing: border-box;
    height: 200px;
  }
  .needs .biaodan div:nth-child(5) textarea {
    width: 100%;
    height: 140px;
    margin-top: -10px;
    resize: none;
    border: none;
    outline: none;
    font-size: 16px;
    text-indent: 2em;
  }
  .needs .biaodan .tijiao {
    bottom: -12%;
  }
  footer {
    height: 460px;
  }
  footer .yewu {
    display: none;
  }
  footer .massage {
    padding-top: 30px;
    padding-left: 30px;
    box-sizing: border-box;
  }
  footer .massage .erwei {
    width: 250px;
    margin-top: 0px;
  }
  footer .massage .erwei .fuwuhao {
    margin-right: 30px;
  }
  footer .massage .erwei p {
    color: #fff;
    text-align: center;
    font-size: 16.67px;
  }
}