:root {
  --blue-main: #004d87;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

.site-nav {
  background: linear-gradient(90deg, #00599b, #0077b6);
  min-height: 74px;
}

.site-nav .nav-link {
  color: rgba(255, 255, 255, 0.85);
  padding: 1.4rem 0.9rem;
  font-size: 0.98rem;
}

.site-nav .navbar-nav > .nav-item > .nav-link {
  cursor: pointer;
}

.site-nav .nav-link.active,
.site-nav .nav-link:hover {
  color: #fff;
}

@media (min-width: 992px) {
  .site-nav .dropdown-menu {
    display: block;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    pointer-events: none;
    transition: opacity 0.24s ease, transform 0.24s ease, visibility 0.24s ease;
    margin-top: 0.2rem;
    border: 0;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.14);
    border-radius: 0.5rem;
  }

  .site-nav .dropdown:hover > .dropdown-menu,
  .site-nav .dropdown:focus-within > .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-nav .dropdown-toggle::after {
    transition: transform 0.24s ease;
  }

  .site-nav .dropdown:hover > .dropdown-toggle::after,
  .site-nav .dropdown:focus-within > .dropdown-toggle::after {
    transform: rotate(180deg);
  }
}

.footer {
  background: #efefef;
  color: #4a4a4a;
  border-top: 1px solid #e2e2e2;
}

.footer-nav-group h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #2f2f2f;
  margin-bottom: 0.95rem;
}

.footer-nav-group a {
  display: block;
  color: #525252;
  text-decoration: none;
  margin-bottom: 0.6rem;
  line-height: 1.45;
  font-size: 0.98rem;
}

.footer-products-col a {
  white-space: nowrap;
}

.footer-nav-group a:hover,
.footer-bottom a:hover {
  color: #1f1f1f;
}

.footer-contact p {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  color: #4b4b4b;
}

.footer-contact i {
  color: #555;
  margin-top: 0.1rem;
}

.footer-contact strong {
  color: #2f2f2f;
  margin-right: 0.25rem;
}

.footer-bottom {
  margin-top: 1.5rem;
  font-size: 0.96rem;
}

.footer-friends {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.footer-friends strong {
  color: #373737;
}

.footer-bottom a {
  color: #4a4a4a;
  text-decoration: none;
}

.footer-bottom hr {
  margin: 0.55rem 0 0.75rem;
  border-color: #dddddd;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.5rem;
  justify-content: space-between;
  color: #5a5a5a;
}

.footer-meta span {
  margin: 0 0.45rem;
  color: #9a9a9a;
}

@media (max-width: 1199px) {
  .footer-nav-columns {
    row-gap: 1.2rem !important;
  }

  .footer-contact {
    margin-top: 0.5rem;
  }
}

@media (min-width: 1200px) {
  .footer-products-col {
    flex: 0 0 210px;
    max-width: 210px;
  }
}

@media (max-width: 991px) {
  .site-nav .nav-link {
    padding: 0.55rem 0;
  }
}

@media (max-width: 767px) {
  .footer-nav-group h3 {
    margin-bottom: 0.55rem;
  }

  .footer-nav-group a {
    margin-bottom: 0.35rem;
  }

  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}