/*  */
body {
  font-family: PingFang SC, Helvetica Neue, Helvetica, SF Pro Text, Arial,
    sans-serif;
}
h1,
h3,
p {
  font-weight: 400;
}

.container-width {
  width: 1200px;
  margin: 0 auto;
}
.o-hidden {
  overflow: hidden;
}
.pd50 {
  padding-top: 76px;
  padding-bottom: 76px;
}
.pt50 {
  padding-top: 50px;
}
.pb50 {
  padding-bottom: 50px;
}
.index-title {
  margin-bottom: 35px;
  text-align: center;
  overflow: hidden;
}
.index-title h3 {
  position: relative;
  z-index: 2;
  padding-top: 25px;
  font-size: 48px;
  color: #071131;
}
.index-title h3 span {
  position: absolute;
  z-index: -1;
  top: -5px;
  left: 0;
  width: 100%;
  font-size: 72px;
  font-weight: 900;
  text-transform: uppercase;
  color: rgba(0, 0, 0, 0.04);
}
/**************** header ****************/
.header {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 9;
  width: 100%;
  /* min-width: 1200px; */
  transition: all 0.3s;
}
/* logo */
.logo {
  padding: 12px 0;
  display: block;
}
.logo img {
  height: 40px;
}
/* nav */
.nav {
  padding-top: 16px;
}
.nav ul li {
  float: left;
  padding-left: 64px;
}
.nav ul li a {
  position: relative;
  display: block;
  font-size: 16px;
  line-height: 40px;
  padding-bottom: 8px;
  color: #000;
}
.nav ul li a:before {
  position: absolute;
  bottom: 0;
  left: 50%;
  content: "";
  margin-left: -20px;
  width: 40px;
  height: 3px;
  border-radius: 3px;
  background-color: #000;
  transition: all 0.5s;
  opacity: 0;
}
/* hover */
.nav ul li a:hover {
  text-decoration: none;
}
.nav ul li a.on {
  font-weight: 600;
}
.nav ul li a.on:before {
  opacity: 1;
}
.nav ul li a:hover:before {
  opacity: 1;
}
/* 状态 */
.fixed {
  background-color: #fff;
  box-shadow: 0 5px 5px rgba(0, 0, 0, 0.1);
}
.fixed .nav ul li a,
.page-fixed .nav ul li a {
  color: #071131;
}
.fixed .nav ul li a:before,
.page-fixed .nav ul li a:before {
  background-color: #071131;
}
/**************** footer ****************/
.footer {
  padding: 40px 0;
  background-color: #3e4151;
}
.footer-left {
  float: left;
  width: 65%;
  color: #b0b1b8;
}
.footer-left p {
  line-height: 26px;
}
.footer-left h3 {
  margin-top: 25px;
  line-height: 26px;
  font-size: 14px;
  white-space: nowrap;
}
.footer-left a {
  color: #b0b1b8;
}
.footer-right {
  float: left;
  width: 35%;
  text-align: right;
}
.footer-right span {
  display: inline-block;
  padding: 0 15px;
  text-align: center;
}
.footer-right span img {
  max-width: 100px;
}
.footer-right span p {
  color: #b0b1b8;
  line-height: 30px;
}

.footer-center {
  float: left;
  width: 35%;
  text-align: center;
}
.footer-center span {
  display: inline-block;
  padding: 0 20px;
  text-align: center;
}
.footer-center span img {
  max-width: 100px;
}
.footer-center span p {
  color: #b0b1b8;
  line-height: 30px;
}

/*window-service*/
.window-service {
  position: fixed;
  bottom: 280px;
  right: 10px;
  z-index: 9;
}
.window-service ul li {
  position: relative;
  background-color: rgba(0, 0, 0, 0.5);
  width: 50px;
  height: 50px;
  border-radius: 4px;
  margin-bottom: 13px;
  color: #fff;
  text-align: center;
  cursor: pointer;
}
.window-service ul li a {
  color: #fff;
}
.window-service ul li i {
  font-size: 28px;
}
.window-service ul li p {
  font-size: 14px;
  line-height: 50px;
}
/*  */
.window-service-wx-pic {
  position: absolute;
  bottom: -35px;
  right: 70px;
  z-index: -1;
  width: 110px;
  padding: 12px;
  background-color: #fff;
  border-radius: 4px;
  box-shadow: 0px 2px 10px 10px rgba(225, 225, 225, 0.2);
  transition: all 0.3s;
}
.window-service-wx-pic:before {
  position: absolute;
  bottom: 50px;
  right: -10px;
  content: "";
  border-left: 10px solid #fff;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
}
.window-service-wx-pic h3 {
  margin-top: 8px;
  color: #64697f;
  font-size: 10px;
  line-height: 18px;
  transform: scale(0.9);
}
.window-service-wx-pic {
  opacity: 0;
  visibility: hidden;
  transform: translateX(10px);
}
/* hover */
.window-service ul li:hover {
  background-color: rgba(0, 0, 0, 0.7);
}
.window-service ul li:hover .window-service-wx-pic {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.text-center {
  text-align: center;
}

@media (max-width: 768px) {
  .index-title h3 {
    position: relative;
    z-index: 2;
    padding-top: 25px;
    font-size: 20px;
    color: #071131;
  }
  .index-title h3 span {
    position: absolute;
    z-index: -1;
    top: -5px;
    left: 0;
    width: 100%;
    font-size: 20px;
    font-weight: 900;
    text-transform: uppercase;
    color: rgba(0, 0, 0, 0.04);
  }
  .footer {
    font-size: 12px;
    padding: 10px 0;
  }
  .footer-left p {
    line-height: 16px;
  }
  .footer-left h3 {
    margin-top: 25px;
    line-height: 16px;
    font-size: 12px;
    white-space: nowrap;
  }
  .footer-center span img {
    max-width: 80px;
  }
}