footer.main-footer {
  display: block;
  padding: 0;
  border-top: 1px solid #e9e9e9;
  box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.05);
}

.introduce {
  background-color: #E6F4FF;
}

.introduce-left h2 {
  margin-top: 0;
  font-size: 16px;
  font-weight: 600;
}

.introduce-left span {
  color: #444;
}

.introduce-right {
  display: flex;
  gap: 8px;
}

.introduce-right .btn-action {
  padding: 12px 16px;
  border-radius: 8px;
  font-weight: 600;
  border: 1px solid var(--primary, #2199c4);
  background-color: var(--primary, #2199c4);
  color: #fff;
}

.introduce-right .btn-action:last-child {
  padding: 12px 16px;
  border-radius: 8px;
  font-weight: 600;
  color: var(--primary, #2199c4);
  background-color: #fff;
}

.introduce-right .btn-action:hover {
  opacity: 0.8;
}

.introduce-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 20px;
  width: 100%;
  margin: 0 auto;
  max-width: 1200px;
}

.footer-border {
  border-top: 1px solid #e9e9e9;
}

.footer-top {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100%;
  margin: 0 auto;
  max-width: 1200px;
  padding: 16px 20px;
  gap: 20px;
}

.footer-top-item h2 {
  font-size: 16px;
  font-weight: 700;
}

.footer-top-item ul {
  list-style: none;
  padding: 0;
}

.footer-top-item li a {
  color: #444;
  margin-bottom: 6px;
  font-size: 14px;
}
.footer-top-item li {
  margin-bottom: 4px;
}

.footer-top-item .box-item {
  background-color: #f6f7f9;
  border: 1px solid #e2e8f0;
  padding: 16px 12px;
  border-radius: 8px;
}

.footer-top-item .box-item h3 {
  font-size: 14px;
  font-weight: 700;
  margin-top: 0;
  margin-bottom: 4px;
}

.footer-top-item .box-item .btn-send-feedback {
  display: flex;
  margin-top: 8px;
  width: fit-content;
  background: #fff;
  padding: 8px 12px;
  border: 1px solid #e9e9e9;
  border-radius: 8px;
  color: #444;
  font-weight: 600;
}

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

.footer-download a {
  font-weight: 600;
}

.footer-download .footer-app-download {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-bottom: 8px;
  gap: 8px;
}

.footer-app-download img {
  width: 100%;
}

.footer-app-left .icon,
.footer-app-right .icon {
  align-items: center;
  display: flex;
  background-color: #fff;
  border-radius: 8px;
  border: 1px solid #e9e9e9;
  padding: 8px 12px;
}

.footer-app-right {
  display: grid;
  gap: 8px;
}

.footer-bottom {
  display: flex;
  width: 100%;
  justify-content: space-between;
  align-items: flex-end;
  margin: 0 auto;
  max-width: 1200px;
  padding: 16px 20px;
  gap: 20px;
}

.copyright-links {
  display: flex;
  gap: 4px;
}

.copyright-links a {
  color: #444;
}

.copyright-links a:not(:last-child) {
  border-right: 1px solid #e5e5e5;
  padding-right: 4px;
}

.company-copyright {
  font-size: 14px;
}

#back-to-top {
    position: fixed;
    bottom: 65px;
    right: 15px;
    z-index: 9;
    width: 50px;
    height: 50px;
    text-align: center;
    background: #999;
    color: #fff;
    border-radius: 5px;
    cursor: pointer;
    border: 0;
    text-decoration: none;
    opacity: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

#back-to-top:hover {
    background: #006d94;
}


@media (max-width: 900px) {
  .introduce-wrapper {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .footer-top {
    grid-template-columns: repeat(1, 1fr);
  }
  #back-to-top {
    bottom: 90px;
    right: 10px ;
  }
}
.footer-heading {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 16px 0;
}

.footer-subheading {
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 4px 0;
}