@media screen and (min-width: 800px) and (max-width: 1366px){
  .top-tips-main {
    width: 800px;
  }
  .title-ch {
    font-size: 28px;
    letter-spacing: 5px;
  }
  .title-en {
    font-size: 16px;
    line-height: 16px;
  }
  .title-line {
    width: 34px;
    height: 4px;
  }
  .header-main {
    width: 800px !important;
  }
  .footer-main {
    width: 800px;
  }
  .qrcode img {
    width: 120px;
    height: 120px;
  }
  .footer-links {
    width: 800px;
  }
}

@media screen and (max-width: 800px){
  .title-ch {
    font-size: 20px;
    letter-spacing: 2px;
  }
  .title-en {
    font-size: 12px;
    line-height: 14px;
    margin-top: 5px;
  }
  .title-line {
    width: 20px;
    height: 2px;
    margin-top: 5px;
  }
  .public-btn {
    font-size: 14px;
    padding: 8px 20px;
  }
  header {
    background: rgba(0, 0, 0, 0.2) !important;
  }
  .header-hide {
    transform: translateY(0) !important;
  }
  .header-main {
    width: 100vw;
    height: 60px;
    padding: 0 20px;
    box-sizing: border-box;
  }
  header img {
    height: 30px;
  }
  header .nav {
    display: none;
  }
  .header-menu-btn {
    display: block;
  }
  .top-tips-main {
    width: 100vw;
    box-sizing: border-box;
    padding: 0 20px;
    margin: 0;
    font-size: 14px;
  }
  .top-tips-close {
    font-size: 18px;
  }
  .footer-main {
    width: 100vw;
    padding: 0 20px;
    box-sizing: border-box;
  }
  .footer-content {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  .footer-card {
    padding: 0;
    transform: translateX(0);
  }
  .footer-card:hover {
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
  }
  .footer-card-title {
    font-size: 18px;
    margin-bottom: 10px;
  }
  .footer-card-line {
    font-size: 13px;
    line-height: 18px;
    display: flex;
    flex-wrap: wrap;
    margin-top: 10px;
  }
  .footer-card-line:nth-child(5) span:nth-child(1), .footer-card-line:nth-child(6) span:nth-child(1) {
    display: none;
  }
  .qrcode {
    margin-top: 20px;
  }
  .qrcode img {
    display: block;
    width: 100px;
    height: 100px;
  }
  .qrcode p {
    margin-top: 5px;
    font-size: 12px;
  }
  .footer-links {
    width: 100%;
    margin-top: 20px;
  }
  .footer-links > * {
    padding: 0 10px;
    margin-top: 5px;
  }
  .footer-links a:hover {
    font-weight: 400;
  }
  .copyright {
    margin-top: 20px;
    font-size: 12px;
  }
  .to-top {
    width: 48px;
    height: 48px;
  }
  .to-top i {
    margin-top: -10px;
    font-size: 40px;
  }
  .to-top span {
    font-size: 14px;
    margin-top: -10px;
  }
  .back-btn {
    width: 48px;
    height: 48px;
    bottom: calc(10vh + 53px);
  }
  .back-btn i {
    font-size: 18px;
  }
}