html,
body {
  padding: 0;
  margin: 0;
  color: #fff;
  font-family: 'Nunito Sans', 'Microsoft YaHei', sans-serif;
  min-width: 1440px;
}
.container {
  height: 100%;
  margin: 0 auto;
  max-width: 1920px;
}
.header {
  min-height: 755px;
  background: url('./assets/header-bg.png');
}

.header .header-container {
  padding: 60px 132px;
}
.header .title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 70px 122px;
}
.header .title .main {
  font-weight: 700;
  font-size: 15px;
}
.header .title .logo {
  display: flex;
  align-items: center;
}
.header .title .logo .logo-text {
  margin-left: 15px;
  font-weight: 400;
  font-size: 18px;
}
.header .title img {
  width: 70px;
  height: 70px;
}
.header-container .content {
  width: 766px;
  height: 196px;
}
.header-container .underline {
  height: 2px;
  width: 114px;
  margin: 10px 0;
  background: #fff;
}
.header-container .content span {
  font-size: 72px;
  font-weight: 700;
  letter-spacing: 1.5px;
}

.header-container .build {
  height: 30px;
  width: 505px;
  padding-top: 40px;
}
.header-container .build span {
  font-size: 18px;
  font-weight: 400;
  letter-spacing: 0.5px;
}
.center {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 515px;
  color: #000;
}

.center .business {
  margin-bottom: 57px;
  font-size: 48px;
  font-weight: 700;
  letter-spacing: 1.5px;
}
.center .business-content {
  display: flex;
  justify-content: space-around;
  width: 979px;
  height: 173px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.business-content .study,
.business-content .report,
.business-content .apply {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.business-content .study-icon,
.business-content .report-icon,
.business-content .apply-icon {
  width: 173px;
  height: 132px;
  margin-bottom: 10px;
}
.study-icon {
  background: url('./assets/study.png');
}
.report-icon {
  background: url('./assets/internet-report.png');
}
.apply-icon {
  background: url('./assets/apply-tool.png');
}
.footer {
  background: url('./assets/footer-bg.png');
  background-size: cover;
}

.footer-container {
  margin: 0 auto;
  text-align: center;
  max-width: 540px;
  min-height: 607px;
}
.footer-container .content {
  padding-top: 140px;
  font-weight: 700;
  font-size: 30px;
  letter-spacing: 1.5px;
}
.footer-container .text {
  font-weight: 400;
  font-size: 60px;
}
.footer-container .underline {
  background: #fff;
  height: 3px;
  width: 184px;
  margin: 50px auto;
}
.footer-container .culture {
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 0.5px;
}
.footer-container .email,
.footer-container .address {
  display: flex;
  align-items: center;
}
.footer-container .email-icon {
  width: 20px;
  height: 20px;
  margin-right: 10px;
  background: url('./assets/email.png');
}
.footer-container .address-icon {
  width: 20px;
  height: 20px;
  margin-right: 10px;
  background: url('./assets/address.png');
}
.footer-container .bottom {
  padding-top: 155px;
  display: flex;
  justify-content: space-around;
  margin-bottom: 8px;
}
.footer-container .policy{
  text-decoration: none;
  color: #fff;
}
.footer .policy:hover {
  color: #aaaaaa;
}
.footer .policy:active {
  text-decoration: underline;
}