/* 全局样式 - 与咨询设计服务页面保持一致 */
:root {
  --primary-color: #1e88e5;
  --primary-dark: #0d47a1;
  --secondary-color: #42a5f5;
  --light-blue: #e3f2fd;
  --white: #ffffff;
  --dark-gray: #333333;
  --light-gray: #f5f5f5;
  --border-radius: 12px;
  --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* 专利内容区域 */
.patents-section {
  padding: 40px 0;
  background-color: var(--white);
}

/* 专利项目样式 */
.certificate-item {
  display: flex;
  align-items: center;
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  margin: 20px auto;
  padding: 30px;
  max-width: 1000px;
  max-height: 400px;
}

.certificate-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
  border-left: 5px solid var(--primary-dark);
}

.certificate-item img {
  max-width: 240px;  /* 限制最大宽度 */
  max-height: 220px; /* 限制最大高度 */
  object-fit: contain;
  border-radius: 8px;
  margin-right: 30px;
  border: 1px solid var(--light-gray);
  padding: 10px;
  background: var(--white);
}

.certificate-text {
  flex: 1;
}

.certificate-text h3 {
  font-size: 1.5rem;
  color: var(--primary-dark);
  margin-bottom: 15px;
  position: relative;
 
}

.certificate-text h3:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--primary-color);
}

.certificate-text p {
  color: var(--dark-gray);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 15px;
  min-height: 20px;
}

.patent-meta {
  display: flex;
  gap: 20px;
  margin-top: 15px;
  font-size: 0.9rem;
  color: var(--dark-gray);
}

.patent-meta i {
  color: var(--primary-color);
  margin-right: 5px;
}

/* 分页样式 */
.pagination {
  display: flex;
  justify-content: center;
  margin: 40px 0;
}

.pagination-numbers {
  display: flex;
  gap: 10px;
}

.pagination-button {
  width: 40px;
  height: 40px;
 /* border-radius: 50%; */
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--light-gray);
  color: var(--dark-gray);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.pagination-button:hover {
  background: var(--primary-color);
  color: var(--white);
}

.pagination-button.active {
  background: var(--primary-dark);
  color: var(--white);
}


/* 响应式设计 */
@media (max-width: 768px) {
  .certificate-item {
    flex-direction: column;
    padding: 20px;
    text-align: center;
  }
  
  .certificate-item img {
    width: 100%;
    height: auto;
    margin-right: 0;
    margin-bottom: 20px;
  }
  
  .certificate-text h3:after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .patent-meta {
    flex-direction: column;
    gap: 10px;
  }
  
  .cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  
  .cta-button {
    width: 100%;
  }
}
/* 分页容器样式 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 20px 0;
  flex-wrap: wrap;
}

.pagination-numbers {
  display: flex;
  gap: 5px;
  align-items: center;
}

/* 分页按钮基础样式 */
.pagination-button {
  padding: 5px 10px;
  border: 1px solid #ddd;
  background: #fff;
  color: #333;
  cursor: pointer;
  border-radius: 3px;
  min-width: 32px;
  text-align: center;
  transition: all 0.3s ease;
}

.pagination-button:hover:not(.disabled) {
  background: #f0f0f0;
}

.pagination-button.active {
  background: #007bff;
  color: white;
  border-color: #007bff;
}

/* 特殊按钮样式 */
.pagination-button.first-group,
.pagination-button.last-group,
.pagination-button.prev-group,
.pagination-button.next-group {
  font-weight: bold;
  background: #f8f9fa;
}

/* 禁用按钮样式 */
.pagination-button.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: #f8f9fa;
}

/* 组指示器样式 */
.group-indicator {
  margin-left: 15px;
  padding: 5px 10px;
  color: #666;
  font-size: 14px;
  background: #f8f9fa;
  border-radius: 3px;
}

/* 错误提示样式 */
.api-error-alert {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  background: #ffebee;
  color: #c62828;
  border-radius: 4px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  display: flex;
  align-items: center;
  z-index: 1000;
}

.api-error-alert i {
  margin-right: 8px;
}