body {
  min-height: 100vh;
  font-size: 16px;
  color: #272727;
  font-family: "Microsoft YaHei", SimSun, Arial, Helvetica, sans-serif;
}

h1,
h2,
h3,
h4,
h5,
h6,
p {
  margin: 0;
  font-size: 16px;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

li {
  padding: 0;
  list-style-type: none;
}

a {
  text-decoration: none;
  color: #272727;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
  background-color: #f5f5f5;
}

::-webkit-scrollbar-thumb {
  border-radius: 4px;
  background-color: #cccecf;
}

.container {
  width: 1200px;
  margin: 0 auto;
}

.flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.fl {
  float: left !important;
}

.fr {
  float: right !important;
}

.clearfix::after {
  content: "";
  display: block;
  clear: both;
}

.mt18 {
  margin-top: 18px;
}

.mr18 {
  margin-right: 18px;
}

.mb18 {
  margin-bottom: 18px;
}

.ml18 {
  margin-left: 18px;
}

.section-title {
  position: relative;
  text-align: center;
  height: 66px;
}
.section-title img {
  display: block;
  height: 50px;
  margin: 0 auto;
}
.section-title h3 {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  font-size: 34px;
  font-weight: normal;
}

.header {
  position: sticky;
  width: 100%;
  left: 0;
  top: 0;
  z-index: 99;
  background-color: #fff;
}
.header .logo h1 {
  font-size: 0;
}
.header .logo img {
  display: block;
  height: 42px;
}
.header .nav {
  display: flex;
  align-items: center;
  height: 68px;
}
.header .nav li {
  position: relative;
  height: 100%;
  margin-left: 56px;
}
.header .nav li:hover::after {
  opacity: 1;
}
.header .nav li:hover a {
  color: #0688d2;
}
.header .nav li:first-child {
  margin-left: 0;
}
.header .nav li::after {
  content: "";
  opacity: 0;
  width: 100%;
  height: 3px;
  position: absolute;
  left: 0;
  bottom: 0;
  background-color: #0688d2;
  transition: all 0.2s;
}
.header .nav li.active::after {
  opacity: 1;
}
.header .nav li.active a {
  color: #0688d2;
}
.header .nav li a {
  display: block;
  line-height: 68px;
  transition: all 0.2s;
}

.footer {
  margin-top: 120px;
  padding-top: 38px;
  padding-bottom: 24px;
  background: #1b1b1b;
}
.footer .container .section {
  margin-right: 180px;
}
.footer .container .section .item {
  position: relative;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 20px;
  padding-left: 30px;
  font-size: 12px;
}
.footer .container .section .item::before {
  content: "";
  display: block;
  width: 20px;
  height: 20px;
  background-color: #fff;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}
.footer .container .section .item.mobile span:last-child {
  margin-left: 16px;
}
.footer .container .nav {
  margin-left: 110px;
}
.footer .container .nav li {
  margin-top: 25px;
  text-align: center;
}
.footer .container .nav li:first-child {
  margin-top: 12px;
}
.footer .container .nav li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}
.footer .container .nav li a:hover {
  color: #0688d2;
}
.footer .container .qrcode {
  padding: 7px;
  background: rgba(255, 255, 255, 0.06);
}
.footer .container .qrcode img {
  display: block;
  width: 94px;
  height: 94px;
  background-color: #fff;
}
.footer .container .qrcode .tip {
  font-size: 12px;
  color: #ffffff;
  margin-top: 5px;
  text-align: center;
}
.footer .line {
  width: 100%;
  height: 1px;
  background-color: rgba(255, 255, 255, 0.3);
  margin: 32px 0 24px;
}
.footer .link {
  display: flex;
  justify-content: center;
  align-items: center;
}
.footer .link i {
  display: block;
  height: 10px;
  width: 1px;
  background-color: rgba(255, 255, 255, 0.4);
  margin: 0 16px;
}
.footer .link a {
  color: rgba(255, 255, 255, 0.4);
  font-size: 12px;
}
.footer .link a:hover {
  color: #0688d2;
}
.footer .copyright {
  margin-top: 20px;
  text-align: center;
  color: rgba(255, 255, 255, 0.4);
  font-size: 12px;
}
.footer .copyright a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: underline;
}
.footer .copyright * {
  margin: 0 24px;
}