/* 页脚样式 */
footer {
  background: var(--primary);
  color: white;
  padding: 60px 0 30px;
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5%;
}

.footer-column {
  margin-bottom: 30px;
}

.footer-logo {
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 20px;
  color: white;
}

.footer-about p {
  margin-bottom: 20px;
  opacity: 0.8;
  line-height: 1.6;
}

.social-links {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.social-links a {
  color: white;
  font-size: 20px;
  transition: opacity 0.3s;
}

.social-links a:hover {
  opacity: 0.8;
}

.footer-links h3 {
  font-size: 18px;
  margin-bottom: 20px;
  color: var(--accent);
}

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

.footer-links ul li {
  margin-bottom: 10px;
}

.footer-links ul li a {
  color: white;
  opacity: 0.8;
  text-decoration: none;
  transition: opacity 0.3s;
}

.footer-links ul li a:hover {
  opacity: 1;
}

.copyright {
  text-align: center;
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.7;
  font-size: 14px;
  grid-column: 1 / -1;
}