* {
  margin: 0;
  padding: 0;
}
body {
  font-family: sans-serif;
}
a {
  color: #444;
}
a {
  text-decoration: none;
}
.header {
  height: 60px;
}
.nav {
  position: absolute;
  right: 0;
  top: 0;
}
.nav a {
  display: inline-block;
  *display: inline;
  zoom: 1;
  line-height: 60px;
  padding: 0 40px;
  font-size: 15px;
  color: #555;
}
.nav a.active {
  color: #4297E1;
}
.nav a:hover {
  color: #4297E1;
}
.container {
  width: 1100px;
  margin: 0 auto;
  clear: both;
  position: relative;
}
.logo a {
  font-size: 0;
  display: block;
  height: 60px;
  width: 200px;
  background: url(../images/logo.png) no-repeat left center;
  background-image: -webkit-image-set(url(../images/logo.png) 1x, url(../images/logo2x.png) 2x);
}
.banner {
  background: url(../images/banner.jpg) no-repeat center;
  height: 700px;
}
.pages .container {
  overflow: hidden;
  padding: 40px 0;
}
.pages img {
  width: 580px;
  float: left;
}
.pages-txt {
  float: right;
  padding-top: 150px;
}
.pages-txt h3 {
  margin-bottom: 15px;
  font-size: 22px;
  color: #444;
}
.pages-txt p {
  font-size: 14px;
  color: #888;
  width: 300px;
  line-height: 2;
}
.pages-grey {
  background: #FAFAFA;
}
.pages-grey .container .pages-txt {
  float: left;
}
.pages-grey .container img {
  float: right;
}
.page-title {
  font-size: 20px;
  color: #444;
  text-align: center;
  padding: 70px 0;
  border-top: 1px solid #fafafa;
}
.page-title p {
  font-size: 14px;
  color: #888;
  font-weight: normal;
  margin-top: 10px;
}
.part {
  text-align: center;
}
.part > div {
  background-repeat: no-repeat;
  background-position: center top;
  padding-top: 120px;
  background-size: 110px;
  text-align: center;
  display: inline-block;
  *display: inline;
  width: 110px;
  margin: 0 40px;
  zoom: 1;
  color: #777;
  transition: 0.4s;
}
.part > div:hover {
  transform: translateY(-10px);
}
.part .s1 {
  background-image: url(../images/r1@2x.png);
}
.part .s2 {
  background-image: url(../images/r2@2x.png);
}
.part .s3 {
  background-image: url(../images/r3@2x.png);
}
.part .s4 {
  background-image: url(../images/r4@2x.png);
}
.part-btn {
  display: inline-block;
  *display: inline;
  zoom: 1;
  border: 1px solid #979797;
  padding: 12px 40px;
  transition: 0.4s;
  border-radius: 2px;
  cursor: pointer;
}
.part-btn:hover {
  background: #4297E1;
  color: #fff;
  border: 1px solid #4297E1;
}
.banner h2 {
  padding-top: 240px;
  font-size: 38px;
  font-weight: normal;
  margin-bottom: 20px;
}
.banner p {
  font-size: 16px;
  line-height: 2;
}
.banner h2,
.banner p {
  color: #fff;
}
.partbar {
  text-align: center;
  margin: 70px 0 40px;
  padding-bottom: 40px;
}
.footer {
  text-align: center;
  line-height: 2;
  font-size: 12px;
  padding: 40px 0 40px;
  color: #999;
  background: #FAFAFA;
}
.case {
  overflow: hidden;
  padding-bottom: 40px;
}
.case > div {
  width: 21%;
  margin: 2% 2%;
  float: left;
  transition: 0.4s;
}
.case > div:hover {
  transform: translateY(-10px);
}
.case > div img {
  width: 80%;
  margin: 0 auto;
}
.menuico {
  display: none;
}
.about .banner {
  background: url(../images/banner2.jpg) no-repeat center;
  height: 500px;
}
.about .container {
  padding: 0 0 50px 0;
  font-size: 14px;
  line-height: 2;
  color: #666;
  width: 800px;
  text-align: justify;
}
.about .container p {
  margin-bottom: 14px;
}
.about .page-title {
  border: none;
  margin: 0;
  padding: 50px 0;
}
@media screen and (max-width: 600px) {
  body {
    padding-top: 60px;
  }
  .container {
    width: 100%;
  }
  .about .banner {
    height: 400px;
    background-size: cover;
  }
  .about .container {
    width: auto;
    margin: 0 40px;
  }
  .banner {
    background-size: cover;
    background-position: center top;
    background-image: url(../images/mbanner.jpg);
    height: 440px;
  }
  .banner h2 {
    padding-top: 40px;
    font-size: 24px;
  }
  .banner p {
    font-size: 14px;
  }
  .banner h2,
  .banner p {
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  }
  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 60px;
    background: #fff;
  }
  .nav a {
    display: block;
  }
  .menuico {
    display: block;
    position: absolute;
    right: 0;
    top: 0;
    height: 60px;
    width: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20;
  }
  .menuico div {
    width: 30px;
    height: 30px;
    position: relative;
    transition: 0.2s;
  }
  .menuico div > i {
    display: block;
    width: 20px;
    height: 2px;
    margin: 5px 0;
    background: #ccc;
    transition: 0.2s;
  }
  .header .menuico {
    position: absolute;
    right: 0;
    top: 0;
    height: 60px;
    width: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20;
  }
  .header .menuico > div {
    width: 30px;
    height: 30px;
    position: relative;
    transition: 0.2s;
  }
  .header .menuico > div i {
    display: block;
    width: 20px;
    height: 2px;
    margin: 5px 0;
    background: #ccc;
    transition: 0.2s;
  }
  .header {
    position: fixed;
    left: 0;
    height: 60px;
    top: 0;
    right: 0;
    z-index: 90;
    background: #fff;
  }
  .header .contaienr {
    background: #fff;
    height: 60px;
  }
  .header.header-open {
    z-index: 100;
  }
  .header.header-open .menu {
    display: block;
  }
  .header.header-open .menuico > div {
    transform: rotate(-45deg);
  }
  .header.header-open .menuico > div i {
    position: absolute;
    left: 50%;
    top: 50%;
  }
  .header.header-open .menuico > div i:nth-child(2) {
    display: none;
  }
  .header.header-open .menuico > div i:nth-child(1) {
    margin-left: -10px;
    margin-top: -1px;
  }
  .header.header-open .menuico > div i:nth-child(3) {
    margin-left: -10px;
    margin-top: -1px;
    transform: rotate(-90deg);
  }
  .nav {
    display: none;
  }
  .header-open .nav {
    display: block;
  }
  .pages .container {
    padding: 80px 0;
  }
  .pages img {
    width: 90%;
    display: block;
    float: none;
    width: 100%;
    margin: 0 auto;
    margin-top: -50px;
    margin-bottom: 40px;
  }
  .pages-txt {
    float: none !important;
    margin: 0 40px;
    padding: 0;
    text-align: center;
  }
  .pages-txt h3 {
    font-size: 16px;
  }
  .pages-txt p {
    font-size: 13px;
    line-height: 1.5;
  }
  .pages-grey img {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    margin-top: 50px;
  }
  .pages-grey .pages-txt {
    padding-top: 280px;
  }
  .case {
    margin: 0 20px;
  }
  .case > div {
    width: 44%;
    margin: 20px 3%;
  }
  .case > div img {
    width: 100%;
  }
  .part {
    margin: 0 20px;
    font-size: 0;
  }
  .part > div {
    font-size: 14px;
    width: 44%;
    margin: 20px 3%;
    background-size: 80px;
    padding-top: 90px;
  }
  .part > div img {
    background-size: 80px;
  }
  .footer {
    padding: 90px 50px;
  }
  .footer p:last-child {
    margin-top: 20px;
  }
}
.mask {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  top: 60px;
  background: rgba(0, 0, 0, 0.4);
  display: none;
}
.mask.show {
  display: block;
}