/* 基础样式 */
.site-footer {
  background: #2c3e50;
  color: #ecf0f1;
  padding: 4rem 0 2rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 栏目布局 */
.footer-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col {
  padding: 0 1rem;
}

.footer-title {
  color: #3498db;
  margin-bottom: 1.5rem;
  font-size: 1.2rem;
}

/* 链接样式 */
.footer-links li {
  margin-bottom: 0.8rem;
}

.footer-links a {
  color: #bdc3c7;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: #3498db;
}

/* 社交媒体图标 */
.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-icon {
  width: 32px;
  height: 32px;
  display: block;
}

.social-icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.social-icon:hover {
  opacity: 0.8;
}

/* 版权信息 */
.copyright-section {
  border-top: 1px solid #34495e;
  padding-top: 2rem;
  text-align: center;
  font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .footer-columns {
    grid-template-columns: 1fr;
  }
  
  .footer-col {
    margin-bottom: 2rem;
  }
}