* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

/* 导航样式 */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: #2c3e50;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: #34495e;
  font-weight: 500;
  transition: color 0.3s;
}

/* 各内容区块通用样式 */
section {
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

/* 轮播图样式 */
.banner {
  height: 505px;
  width: 100%;
  position: relative;
  overflow: hidden;
}

.carousel {
  width: 100%;
  height: 100%;
  position: relative;
}

.carousel-item {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  background-size: cover;
  background-position: center;
}

.banner-text {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  max-width: 600px;
  color: #fff;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.3);
}

.center-align .banner-text {
  left: 10%;
  right: 10%;
  text-align: center;
}

.right-align .banner-text {
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 800px;
  text-align: right;
  padding: 0 10%;
}

.main-title {
  font-size: 2.5rem;
  font-weight: bold;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  white-space: nowrap;
}

.sub-title {
  font-size: 1.2rem;
  line-height: 1.6;
  opacity: 0.9;
}

@media (max-width: 768px) {
  .main-title {
    font-size: 1.8rem;
  }
  .sub-title {
    font-size: 1rem;
  }
  .banner-text {
    left: 5%;
    right: 5%;
  }
}

/* 产品解决方案样式 */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  width: 100%;
  max-width: 1200px;
}

.contact-box {
  display: flex;
  gap: 40px;
  margin: 40px 0;
}

.contact-form {
  width: 620px;
  padding-right: 40px;
  border-right: 1px solid #eee;
  position: relative;
}

.contact-form form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 40px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(24, 144, 255, 0.1);
  transition: all 0.3s ease;
}

.contact-form form:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 45px rgba(24, 144, 255, 0.15);
}

.contact-form label {
  font-size: 15px;
  color: #2c3e50;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  padding-left: 8px;
}

.contact-form label::after {
  content: "→";
  color: #1890ff;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.contact-form input:focus + label::after,
.contact-form textarea:focus + label::after {
  opacity: 1;
}

.contact-form label::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 16px;
  background: #1890ff;
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.contact-form input:focus + label,
.contact-form textarea:focus + label {
  color: #1890ff;
}

.contact-form input:focus + label::before,
.contact-form textarea:focus + label::before {
  opacity: 1;
}

.contact-form input,
.contact-form textarea {
  padding: 16px 24px;
  border: 2px solid transparent;
  border-radius: 12px;
  font-size: 15px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: linear-gradient(white, white) padding-box,
    linear-gradient(135deg, #40a9ff, #1890ff) border-box;
  color: #2c3e50;
  position: relative;
  box-shadow: 0 4px 20px rgba(24, 144, 255, 0.1);
}

.contact-form input:hover,
.contact-form textarea:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(24, 144, 255, 0.15);
}

.contact-form input:focus,
.contact-form textarea:focus {
  background: linear-gradient(white, white) padding-box,
    linear-gradient(135deg, #40a9ff, #69c0ff) border-box;
  box-shadow: 0 8px 30px rgba(24, 144, 255, 0.2);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: #7f8c8d;
  opacity: 0.8;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #40a9ff;
  box-shadow: 0 4px 15px rgba(24, 144, 255, 0.15);
  background: #fff;
  transform: translateY(-2px);
}

.contact-form textarea {
  height: 140px;
  resize: vertical;
  line-height: 1.6;
  font-family: "微软雅黑";
}

.contact-form button {
  padding: 18px 40px;
  background: linear-gradient(135deg, #1890ff, #40a9ff);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.contact-form button::before {
  content: "→";
  font-weight: 700;
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s ease;
}

.contact-form button:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 12px 30px rgba(24, 144, 255, 0.3);
}

.contact-form button:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.contact-form button::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.25),
    transparent
  );
  transition: 0.6s;
  transform: translateX(-100%);
}

.contact-form button:hover::after {
  transform: translateX(100%);
}

.contact-form button:active {
  transform: translateY(2px) scale(0.98);
  box-shadow: 0 4px 15px rgba(24, 144, 255, 0.2);
}

/* 验证提示样式 */
.contact-form input:invalid:not(:placeholder-shown),
.contact-form textarea:invalid:not(:placeholder-shown) {
  border-color: #ff4d4f;
  background: #fff9f9;
}

.contact-form input:required:after,
.contact-form textarea:required:after {
  content: "*";
  color: #ff4d4f;
  margin-left: 4px;
}

@media (max-width: 768px) {
  .contact-form {
    width: 100%;
    padding-right: 0;
    border-right: none;
    border-bottom: 1px solid #eee;
    padding-bottom: 40px;
  }

  .contact-form input,
  .contact-form textarea {
    font-size: 14px;
  }
}

.map-container {
  width: 540px;
  background: #f5f5f5;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: block;
  }
}

/* 页脚样式 */
.page-footer {
  background: rgba(24, 24, 24, 1);
  color: white;
  text-align: center;
  padding: 20px 0;
}

.page-footer a {
  color: white;
  text-decoration: none;
}

.page-footer a:hover {
  text-decoration: underline;
}


nav {
  display: flex;
  justify-content: space-between;
  padding: 20px 50px;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 15px;
}

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

.company-name {
  font-size: 24px;
  font-weight: bold;
}

.nav-menu {
  display: flex;
  gap: 40px;
  list-style: none;
}

.nav-menu a {
  color: #000;
  text-decoration: none;
  font-size: 16px;
  transition: color 0.3s ease;
}

.nav-menu a.active {
  color: #1890ff;
  font-weight: 700;
}

.nav-menu a:hover {
  color: #40a9ff;
}

/* 产品解决方案样式 */
.solution-section {
  padding: 80px 0;
  background: #f9fbfd;
}

.section-title {
  text-align: center;
  font-size: 48px;
  color: #2c3e50;
  margin-bottom: 60px;
}

#contact {
  padding: 80px 0;
}

#contact .section-title {
  font-size: 30px;
  margin-bottom: 30px;
}

.solution-container {
  display: flex;
  justify-content: center;
  gap: 10px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
}

.solution-card {
  flex: 1;
  background: rgba(248, 248, 248, 1);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  border: 12px solid #fff;
  text-align: center;
}

.solution-card:hover {
  transform: translateY(-5px);
}

.solution-card h3 {
  color: #000;
  font-size: 20px;
  margin-bottom: 15px;
}

/* 供应链解决方案特有样式 */
.supplychain-section {
  padding: 80px 0 0;
  background: #f9fbfd;
}
#supplychain .supplychain-container {
  flex-wrap: wrap;
  display: flex;
  justify-content: center;
  gap: 10px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
}

#supplychain .supplychain-card {
  width: 390px;
  height: 300px;
  background: none;
  border: none;
  padding: 0;
  position: relative;
  margin-bottom: 120px;
}

.supplychain-card-img {
  width: 100%;
  height: 100%;
}

.supplychain-card-img img {
  width: 100%;
  height: 100%;
  display: block;
}

.card-content {
  position: absolute;
  bottom: -60px;
  left: 10%;
  width: 80%;
  height: 200px;
  transition: all 0.3s;
  overflow: hidden;
}

.supplychain-card:hover .card-content {
  height: 350px;
}

.front {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: rgba(70, 181, 255, 0.8);
  color: #fff;
  padding: 0 30px;
  text-align: center;
}

.icon {
  font-size: 48px;
  margin-bottom: 40px;
  margin-top: 40px;
}

.front h3 {
  margin-bottom: 40px;
  text-shadow: 0 0 1px #000;
}

.solution-card p {
  color: #666;
  line-height: 1.8;
  font-size: 15px;
}

@media (max-width: 992px) {
  #supplychain .supplychain-card {
    flex: 0 0 calc(50% - 20px);
  }
}

@media (max-width: 768px) {
  .solution-container {
    flex-direction: column;
  }

  .solution-card {
    margin-bottom: 20px;
  }

  .section-title {
    font-size: 24px;
  }
}

#container {
  overflow: hidden;
  width: 100%;
  height: 100%;
  margin: 0;
  font-family: "微软雅黑";
  border: 1px solid #bbb;
}

/* 产品展示页面样式 */
.product-page {
  margin-top: 80px;
  min-height: calc(100vh - 140px);
}

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

/* 页面标题样式 */
.page-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 60px 0;
  text-align: center;
}

.page-title {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 15px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.page-subtitle {
  font-size: 1.2rem;
  opacity: 0.9;
  font-weight: 300;
}

/* 搜索筛选样式 */
.search-filter-section {
  background: #f8f9fa;
  padding: 30px 0;
  border-bottom: 1px solid #e9ecef;
}

.search-filter-box {
  display: flex;
  gap: 30px;
  align-items: center;
  flex-wrap: wrap;
}

.search-box {
  display: flex;
  gap: 10px;
  flex: 1;
  min-width: 300px;
}

.search-input {
  flex: 1;
  padding: 12px 16px;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  font-size: 16px;
  transition: all 0.3s ease;
}

.search-input:focus {
  border-color: #1890ff;
  box-shadow: 0 0 0 3px rgba(24, 144, 255, 0.1);
  outline: none;
}

.search-btn {
  padding: 12px 24px;
  background: #1890ff;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.search-btn:hover {
  background: #40a9ff;
  transform: translateY(-2px);
}

.filter-box {
  display: flex;
  gap: 15px;
}

.filter-select {
  padding: 12px 16px;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  font-size: 16px;
  background: white;
  cursor: pointer;
  transition: all 0.3s ease;
}

.filter-select:focus {
  border-color: #1890ff;
  outline: none;
}

/* 产品列表样式 */
.product-list-section {
  padding: 40px 0 60px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.product-card {
  background: white;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid #f0f0f0;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.15);
}

.product-image {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: #f8f9fa;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.product-card:hover .product-image img {
  transform: scale(1.05);
}

.product-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.product-info {
  padding: 24px;
}

.product-name {
  font-size: 1.4rem;
  font-weight: bold;
  color: #2c3e50;
  margin-bottom: 20px;
  line-height: 1.3;
}

.product-specs {
  margin-bottom: 24px;
}

.spec-item {
  display: flex;
  margin-bottom: 12px;
  align-items: flex-start;
}

.spec-label {
  font-weight: 600;
  color: #666;
  min-width: 80px;
  font-size: 14px;
}

.spec-value {
  color: #2c3e50;
  font-size: 14px;
  line-height: 1.4;
  word-break: break-all;
}

.product-actions {
  display: flex;
  gap: 12px;
}

.btn-detail,
.btn-contact {
  flex: 1;
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-detail {
  background: #f8f9fa;
  color: #495057;
  border: 2px solid #e9ecef;
}

.btn-detail:hover {
  background: #e9ecef;
  border-color: #dee2e6;
}

.btn-contact {
  background: linear-gradient(135deg, #1890ff, #40a9ff);
  color: white;
}

.btn-contact:hover {
  background: linear-gradient(135deg, #40a9ff, #69c0ff);
  transform: translateY(-2px);
}

/* 分页样式 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 40px;
}

.page-btn {
  padding: 10px 16px;
  border: 1px solid #e9ecef;
  background: white;
  color: #495057;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
}

.page-btn:hover {
  border-color: #1890ff;
  color: #1890ff;
}

.page-btn.active {
  background: #1890ff;
  border-color: #1890ff;
  color: white;
}

.page-numbers {
  display: flex;
  gap: 5px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .page-title {
    font-size: 2rem;
  }
  
  .page-subtitle {
    font-size: 1rem;
  }
  
  .search-filter-box {
    flex-direction: column;
    gap: 15px;
  }
  
  .search-box {
    min-width: 100%;
  }
  
  .filter-box {
    width: 100%;
  }
  
  .filter-select {
    flex: 1;
  }
  
  .product-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .product-actions {
    flex-direction: column;
  }
  
  .pagination {
    flex-wrap: wrap;
  }
  
  .page-numbers {
    order: -1;
    width: 100%;
    justify-content: center;
    margin-bottom: 10px;
  }
}

/* 加载状态样式 */
.loading-container {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid #1890ff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 20px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-container p {
  color: #666;
  font-size: 16px;
  margin: 0;
}

/* 错误状态样式 */
.error-container {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
  background: #fff;
  border-radius: 12px;
  border: 2px dashed #e9ecef;
}

.error-icon {
  font-size: 48px;
  margin-bottom: 20px;
}

.error-message {
  color: #666;
  font-size: 16px;
  margin-bottom: 24px;
}

.btn-retry {
  padding: 12px 24px;
  background: #1890ff;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-retry:hover {
  background: #40a9ff;
  transform: translateY(-2px);
}

/* 价格样式 */
.spec-value.price {
  color: #1890ff;
  font-weight: 600;
  font-size: 16px;
}

/* 分页省略号样式 */
.page-ellipsis {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  color: #999;
  font-size: 14px;
}

/* 禁用状态的分页按钮 */
.page-btn:disabled {
  background: #f5f5f5;
  color: #ccc;
  border-color: #e9ecef;
  cursor: not-allowed;
  transform: none;
}

.page-btn:disabled:hover {
  background: #f5f5f5;
  color: #ccc;
  border-color: #e9ecef;
  transform: none;
}

/* API数据适配样式增强 */
.product-card .spec-value {
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
}

.product-name {
  min-height: 3.5rem;
  display: flex;
  align-items: center;
}

/* 空状态样式 */
.empty-state {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  text-align: center;
  color: #666;
}

.empty-state .empty-icon {
  font-size: 64px;
  margin-bottom: 20px;
  opacity: 0.5;
}

.empty-state .empty-message {
  font-size: 18px;
  margin-bottom: 12px;
  color: #999;
}

.empty-state .empty-suggestion {
  font-size: 14px;
  color: #ccc;
}

/* ==================== 产品详情页样式 ==================== */

/* 产品详情页主容器 */
.product-detail-page {
  margin-top: 80px;
  min-height: calc(100vh - 140px);
}

/* 面包屑导航 */
.breadcrumb-section {
  background: #f8f9fa;
  padding: 20px 0;
  border-bottom: 1px solid #e9ecef;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.breadcrumb a {
  color: #666;
  text-decoration: none;
  transition: color 0.3s ease;
}

.breadcrumb a:hover {
  color: #1890ff;
}

.breadcrumb .separator {
  color: #999;
  margin: 0 5px;
}

.breadcrumb .current {
  color: #2c3e50;
  font-weight: 600;
}

/* 产品详情主要内容 */
.product-detail-main {
  padding: 40px 0;
  background: white;
}

.product-detail-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

/* 产品图片区域 */
.product-images {
  position: sticky;
  top: 100px;
}

.main-image {
  position: relative;
  width: 100%;
  height: 400px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
  background: #f8f9fa;
}

.main-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.image-zoom-overlay {
  position: absolute;
  top: 15px;
  right: 15px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 8px 12px;
  border-radius: 20px;
  font-size: 14px;
  opacity: 0;
  transition: opacity 0.3s ease;
  cursor: pointer;
}

.main-image:hover .image-zoom-overlay {
  opacity: 1;
}

.main-image:hover img {
  transform: scale(1.05);
}

.thumbnail-images {
  display: flex;
  gap: 15px;
}

.thumbnail {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  border: 3px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  background: #f8f9fa;
}

.thumbnail.active {
  border-color: #1890ff;
  box-shadow: 0 4px 15px rgba(24, 144, 255, 0.3);
}

.thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumbnail:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* 产品信息区域 */
.product-info-detail {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.product-header {
  border-bottom: 2px solid #f0f0f0;
  padding-bottom: 24px;
}

.product-title {
  font-size: 2.5rem;
  font-weight: bold;
  color: #2c3e50;
  margin-bottom: 16px;
  line-height: 1.2;
}

.product-model,
.product-brand,
.product-category {
  font-size: 16px;
  color: #666;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.product-model::before {
  content: "📋";
}

.product-brand::before {
  content: "🏭";
}

.product-category::before {
  content: "🏷️";
}

/* 注册信息 */
.product-registration h3 {
  font-size: 1.4rem;
  color: #2c3e50;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.product-registration h3::before {
  content: "🛡️";
}

.registration-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.reg-item {
  background: #f8f9fa;
  padding: 16px;
  border-radius: 8px;
  border-left: 4px solid #1890ff;
}

.reg-label {
  font-weight: 600;
  color: #666;
  font-size: 14px;
}

.reg-value {
  color: #2c3e50;
  font-size: 14px;
  margin-top: 4px;
  display: block;
  font-weight: 500;
}

/* 产品操作按钮 */
.product-actions-detail {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.btn-large {
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-primary {
  background: linear-gradient(135deg, #1890ff, #40a9ff);
  color: white;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #40a9ff, #69c0ff);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(24, 144, 255, 0.3);
}

.btn-secondary {
  background: #f8f9fa;
  color: #495057;
  border: 2px solid #e9ecef;
}

.btn-secondary:hover {
  background: #e9ecef;
  border-color: #dee2e6;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: #1890ff;
  border: 2px solid #1890ff;
}

.btn-outline:hover {
  background: #1890ff;
  color: white;
  transform: translateY(-2px);
}

.btn-icon {
  font-size: 18px;
}

/* 产品详细信息标签页 */
.product-details-tabs {
  background: #f8f9fa;
  padding: 60px 0;
}

.tabs-container {
  background: white;
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.tab-headers {
  display: flex;
  background: #f8f9fa;
  border-bottom: 1px solid #e9ecef;
}

.tab-header {
  flex: 1;
  padding: 20px 24px;
  background: transparent;
  border: none;
  font-size: 16px;
  font-weight: 600;
  color: #666;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.tab-header.active {
  background: white;
  color: #1890ff;
}

.tab-header.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: #1890ff;
}

.tab-header:hover:not(.active) {
  background: #f0f0f0;
  color: #1890ff;
}

.tab-contents {
  padding: 40px;
}

.tab-content {
  display: none;
  animation: fadeInUp 0.3s ease;
}

.tab-content.active {
  display: block;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.content-section h3 {
  font-size: 1.8rem;
  color: #2c3e50;
  margin-bottom: 24px;
  border-bottom: 2px solid #1890ff;
  padding-bottom: 12px;
}

.content-section p {
  font-size: 16px;
  line-height: 1.8;
  color: #666;
  margin-bottom: 24px;
}
.content-section img {
  max-width: 100%;
}

/* 特色亮点 */
.feature-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.highlight-item {
  background: linear-gradient(135deg, #f8f9fa, #ffffff);
  padding: 24px;
  border-radius: 12px;
  text-align: center;
  border: 1px solid #e9ecef;
  transition: all 0.3s ease;
}

.highlight-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
  border-color: #1890ff;
}

.highlight-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.highlight-item h4 {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 12px;
}

.highlight-item p {
  font-size: 14px;
  color: #666;
  margin: 0;
}

/* 技术参数表格 */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 40px;
}

.spec-group h4 {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e9ecef;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #f0f0f0;
  font-size: 14px;
}

.specs-table td:first-child {
  font-weight: 600;
  color: #666;
  width: 40%;
  background: #f8f9fa;
}

.specs-table td:last-child {
  color: #2c3e50;
}

.specs-table tr:hover {
  background: #f8f9fa;
}

/* 产品特点列表 */
.features-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.feature-item {
  display: flex;
  gap: 24px;
  padding: 24px;
  background: #f8f9fa;
  border-radius: 12px;
  border-left: 4px solid #1890ff;
  transition: all 0.3s ease;
}

.feature-item:hover {
  background: #f0f8ff;
  transform: translateX(8px);
}

.feature-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #1890ff, #40a9ff);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: bold;
  flex-shrink: 0;
}

.feature-content h4 {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 8px;
}

.feature-content p {
  color: #666;
  font-size: 14px;
  margin: 0;
}

/* 应用范围网格 */
.applications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.application-item {
  background: white;
  padding: 32px 24px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid #e9ecef;
  transition: all 0.3s ease;
}

.application-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  border-color: #1890ff;
}

.app-icon {
  font-size: 64px;
  margin-bottom: 20px;
}

.application-item h4 {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 12px;
}

.application-item p {
  color: #666;
  font-size: 14px;
  margin: 0;
}

/* 认证资质网格 */
.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.cert-item {
  background: white;
  padding: 32px 24px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid #e9ecef;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.cert-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, #1890ff, #40a9ff);
}

.cert-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.cert-badge {
  display: inline-block;
  background: linear-gradient(135deg, #1890ff, #40a9ff);
  color: white;
  padding: 12px 24px;
  border-radius: 20px;
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.cert-item h4 {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 12px;
}

.cert-item p {
  color: #666;
  font-size: 14px;
  margin: 0;
}

/* 相关产品推荐 */
.related-products {
  padding: 60px 0;
  background: white;
}

.related-products .section-title {
  text-align: center;
  font-size: 2.2rem;
  color: #2c3e50;
  margin-bottom: 50px;
}

.related-products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

/* 模态框样式 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.modal-overlay.show {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: white;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 30px;
  border-bottom: 1px solid #e9ecef;
}

.modal-header h3 {
  font-size: 1.4rem;
  color: #2c3e50;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: #999;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.3s ease;
}

.modal-close:hover {
  background: #f0f0f0;
  color: #666;
}

.modal-body {
  padding: 30px;
}

.contact-form-modal {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-weight: 600;
  color: #2c3e50;
  font-size: 14px;
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.3s ease;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: #1890ff;
  box-shadow: 0 0 0 3px rgba(24, 144, 255, 0.1);
  outline: none;
}

.form-group textarea {
  height: 100px;
  resize: vertical;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 20px;
}

.form-actions button {
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .product-detail-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .product-images {
    position: static;
  }
  
  .registration-grid {
    grid-template-columns: 1fr;
  }
  
  .specs-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .product-title {
    font-size: 2rem;
  }
  
  .tab-headers {
    flex-wrap: wrap;
  }
  
  .tab-header {
    min-width: 50%;
    flex: none;
  }
  
  .tab-contents {
    padding: 20px;
  }
  
  .feature-highlights {
    grid-template-columns: 1fr;
  }
  
  .applications-grid,
  .certifications-grid {
    grid-template-columns: 1fr;
  }
  
  .related-products-grid {
    grid-template-columns: 1fr;
  }
  
  .feature-item {
    flex-direction: column;
    text-align: center;
  }
  
  .feature-number {
    align-self: center;
  }
  
  .product-actions-detail {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    padding: 15px 20px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    flex-direction: row;
    gap: 10px;
  }
  
  .btn-large {
    font-size: 14px;
    padding: 12px 16px;
  }
  
  .modal-content {
    margin: 20px;
    width: calc(100% - 40px);
  }
  
  .modal-body {
    padding: 20px;
  }
  
  .form-actions {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .breadcrumb {
    font-size: 12px;
  }
  
  .product-detail-main {
    padding: 20px 0;
  }
  
  .tab-header {
    padding: 15px 12px;
    font-size: 14px;
  }
  
  .thumbnail-images {
    justify-content: center;
  }
  
  .thumbnail {
    width: 60px;
    height: 60px;
  }
}

/* 错误消息容器样式 */
.error-message-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px 20px;
  background: #fff;
  border-radius: 12px;
  margin: 20px 0;
}

.error-message {
  text-align: center;
  padding: 40px;
  background: #f8f9fa;
  border-radius: 12px;
  border: 2px dashed #e9ecef;
  max-width: 400px;
}

.error-message p {
  color: #666;
  font-size: 16px;
  margin-bottom: 20px;
  line-height: 1.6;
}

.error-message .btn-retry {
  padding: 12px 24px;
  background: #1890ff;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.error-message .btn-retry:hover {
  background: #40a9ff;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(24, 144, 255, 0.3);
}