body {
  margin: 0;
  padding: 0;
  text-align: center;
  font-size: 12px;
  font-family: PingFangSC-Semibold, sans-serif;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
dl,
dt,
dd,
ul,
ol,
li,
pre,
form,
fieldset,
legend,
button,
input,
textarea,
table,
th,
td {
  margin: 0;
  padding: 0;
}

img {
  border: 0;
}

ul,
li {
  list-style: none;
}

a {
  text-decoration: none;
  color: #fff;
  cursor: pointer;
}
a:hover {
  text-decoration: none;
}

a .clear {
  clear: both;
}

.clearfix {
  zoom: 1;
}
.clearfix:after {
  content: "";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}

.chat {
  cursor: pointer;
}

.wrapper {
  width: 1200px;
  margin: 0 auto;
  position: relative;
}

.head {
  position: sticky;
  z-index: 100;
  right: 0;
  left: 0;
  top: 0;
  background: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}
.head .top {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.head .top .logo {
  width: 271px;
  height: 50px;
}
.head .top .phone {
  color: #1a4299;
  font-size: 20px;
}
.head .nav {
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  height: 40px;
}
.head .nav-item {
  font-size: 16px;
  color: #333;
  font-family: PingFangSC-Regular;
  transition: color 0.2s ease;
}
.head .nav-item.active, .head .nav-item:hover {
  color: #1a4299;
}

.footer {
  padding: 28px;
  background: #f8f8f8;
  font-family: PingFangSC-Regular;
}
.footer .txt {
  font-size: 14px;
  color: #666;
  line-height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer .txt a {
  color: #666;
}
.footer .txt a::after {
  content: "|";
  display: inline-block;
  width: 16px;
  height: 16px;
  color: #666;
}
.footer .txt a:last-child::after {
  display: none;
}