/* 页脚 */
.footer {
  background-color: #1a1a1a;
  color: var(--white);
  padding: 60px 0 20px;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-bottom: 40px;
  gap: 30px;
}

.footer-column {
  flex: 1;
  min-width: 150px;
}

.company-info {
  flex: 2;
  min-width: 250px;
}

.about-column {
  text-align: right;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}

.footer-logo img {
  height: 40px;
}

.footer-desc {
  margin-bottom: 25px;
  color: #888;
  line-height: 1.6;
  font-size: 14px;
  max-width: 300px;
}

.footer-contact {
  display: flex;
  gap: 15px;
  position: relative;
}

.contact-link {
  display: inline-block;
  position: relative;
  text-decoration: none;
}

.contact-icon {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  object-fit: cover;
  transition: var(--transition);
  border: 2px solid transparent;
}

.contact-qrcode {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  width: 120px;
  height: 120px;
  background: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  z-index: 100;
}

.contact-qrcode img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.contact-link:hover .contact-qrcode {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.contact-link:hover .contact-icon {
  transform: scale(1.05);
  border-color: var(--primary-color);
}

.footer-column h3 {
  margin-bottom: 20px;
  font-size: 18px;
  color: #ccc;
  font-weight: 600;
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: 12px;
}

.footer-column a {
  color: #888;
  text-decoration: none;
  transition: var(--transition);
  font-size: 14px;
}

.footer-column a:hover {
  color: var(--primary-color);
  padding-left: 5px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid #333;
  gap: 20px;
}

.copyright {
  color: #888;
  font-size: 14px;
}

.icp-info {
  display: flex;
  align-items: center;
  gap: 20px;
}

.icp-info a {
  color: #888;
  text-decoration: none;
  display: flex;
  align-items: center;
  transition: var(--transition);
  font-size: 14px;
}

.icp-info a:hover {
  color: var(--primary-color);
}

.icp-info img {
  height: 16px;
  margin-right: 5px;
}