* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    
    body {
      font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
      background-color: #f5f5f5;
      color: #333;
      line-height: 1.5;
    }
    
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
      
    }
    
    /* 顶部导航 */
    .top-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background-color: #fff;
      border-bottom: 1px solid #e5e5e5;
      font-family: "Microsoft YaHei", \5B8B\4F53, Arial;
    font-size: 12px;
    }
    
    .top-header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height:31px;
          }
    
    .top-header-left,
    .top-header-right {
      display: flex;
      align-items: center;
    }
    
    .top-header-left a,
    .top-header-right a {
      color: #666;
      text-decoration: none;
      transition: color 0.3s ease;
    }
    
    .top-header-left a:hover,
    .top-header-right a:hover {
      color: #FF4400;
    }
    
    .top-header-left a:not(:first-child) {
      margin-left: 24px;
    }
    
    .top-header-right a:not(:last-child) {
      margin-right: 24px;
    }
    
    .top-header-logo {
      color: #FF4400;border-right: solid 1px #c8c8c8;padding-right: 16px;
      font-weight: 500;
    }
    
    .dropdown {
      position: relative;
    }
    
    .dropdown-menu {
      position: absolute;
      right: 0;
      top: 100%;
      width: 100px;text-align: center;
      background-color: #fff;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      border-radius: 2px;
      padding: 8px 0;
      display: none;
    }
    
    
    .dropdown:hover .dropdown-menu {
      display: block;
    }
    
    .dropdown-menu a {
      display: block;
      padding: 8px 10px;
      color: #666;
      font-size: 14px;
      margin-right: 0px !important;
    }
    
    .dropdown-menu a:hover {
      background-color: #f5f5f5;
      color: #FF4400;
    }
    
    /* 搜索区域 */
    .search-section {
      background-color: #fff;
      padding: 16px 0;
    }
    
    .search-container {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
    }
    
    @media (min-width: 768px) {
      .search-container {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
      }
    }
    
    .logo-section {
      display: flex;
      align-items: center;
      margin-bottom: 16px;
    }
    
    @media (min-width: 768px) {
      .logo-section {
        margin-bottom: 0;
      }
    }
    
    .logo-section img {
      height: 56px;
    }
    
    .logo-links {
      margin-left: 24px;
      border-left: 1px solid #e5e5e5;
      padding-left: 24px;
      display: none;
    }
    
    @media (min-width: 768px) {
      .logo-links {
        display: block;
      }
    }
    
    .logo-links a {
      color: #666;
      text-decoration: none;
      margin-right: 24px;
    }
    
    .logo-links a:first-child {
      color: #333;
      font-weight: 500;
    }
    
    .logo-links a:hover {
      color: #FF4400;
    }
    
    .search-box {
      width: 100%;
      max-width: 580px;
    }
    
    .search-form {
      display: flex;
      align-items: center;
      border: 2px solid #FF4400;
      border-radius: 9999px;
      overflow: hidden;
    }
    
    .search-category {
      display: flex;
      align-items: center;
      background-color: #f5f5f5;
      padding: 8px 12px;
      cursor: pointer;
      position: relative;
    }
    
    .search-category span {
      font-size: 14px;
    }
    
    .search-category-menu {
      position: absolute;
      top: 100%;
      left: 0;
      width: 128px;
      background-color: #fff;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      border-radius: 2px;
      padding: 8px 0;
      display: none;
    }
    
    .search-category:hover .search-category-menu {
      display: block;
    }
    
    .search-category-menu a {
      display: block;
      padding: 8px 16px;
      font-size: 14px;
      color: #666;
    }
    
    .search-category-menu a:hover {
      background-color: #f5f5f5;
    }
    
    .search-input {
      flex: 1;
      padding: 8px 12px;
      border: none;
      outline: none;
      font-size: 14px;
    }
    
    .search-button {
      background-color: #FF4400;
      color: #fff;
      padding: 8px 24px;
      font-weight: 500;
      font-size: 14px;
      border: none;
      cursor: pointer;
    }
    
    .search-keywords {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 8px;
    }
    
    .search-keywords a {
      font-size: 12px;
      color: #666;
      text-decoration: none;
    }
    
    .search-keywords a:first-child {
      color: #FF4400;
    }
    
    .search-keywords a:hover {
      color: #FF4400;
      text-decoration: underline;
    }
    
    /* 主导航 */
    .main-nav {
      background-color: #FF4400;
      color: #fff;
    }
    
    .main-nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    
    .nav-left,
    .nav-right {
      display: flex;
      align-items: center;
    }
    
    .all-categories {
      display: flex;
      align-items: center;
      padding: 12px 24px;
      background-color: #e03e00;
      font-weight: 500;
    }
    
    .nav-links {
      display: flex;
    }
    
    .nav-links a {
      color: #fff;
      text-decoration: none;
      padding: 12px 24px;
      font-weight: 500;
    }
    
    .nav-links a:hover {
      background-color: rgba(0, 0, 0, 0.1);
    }
    
    .nav-right a {
      color: #fff;
      text-decoration: none;
      padding: 12px 16px;
      display: flex;
      align-items: center;
    }
    
    .nav-right a:hover {
      background-color: rgba(0, 0, 0, 0.1);
    }
    
    .nav-right a i {
      margin-right: 4px;
    }
    
    .mega-menu {
      position: absolute;
      left: 0;
      top: 100%;
      width: 896px;
      background-color: #fff;
      box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
      border-radius: 4px;
      padding: 16px;
      display: none;
      z-index: 30;
    }
    
    .all-categories:hover .mega-menu {
      display: block;
    }
    
    .mega-menu-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    
    .mega-menu-category h3 {
      font-size: 14px;
      font-weight: 500;
      color: #333;
      margin-bottom: 8px;
    }
    
    .mega-menu-category ul {
      list-style: none;
    }
    
    .mega-menu-category li {
      margin-bottom: 4px;
    }
    
    .mega-menu-category a {
      font-size: 14px;
      color: #666;
      text-decoration: none;
    }
    
    .mega-menu-category a:hover {
      color: #FF4400;
    }
    
    /* 轮播图和分类区域 */
    .hero-section {
      background: linear-gradient(to bottom, #f8f9fa, #fff);
      padding: 24px 0;
    }
    
    .hero-container {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    
    @media (min-width: 1024px) {
      .hero-container {
        flex-direction: row;
      }
    }
    
    /* 左侧分类导航 */
    .category-nav {
      width: 100%;
      background-color: #fff;
      border-radius: 8px;
      box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
      overflow: hidden;
    }
    
    @media (min-width: 1024px) {
      .category-nav {
        width: 16.666667%;
      }
    }
    
    .category-nav ul {
      list-style: none;
    }
    
    .category-nav li {
      position: relative;
    }
    
    .category-nav li:hover {
      background-color: #f5f5f5;
    }
    
    .category-nav a {
      display: flex;
      align-items: center;
      padding: 12px 16px;
      color: #333;
      text-decoration: none;
    }
    
    .category-nav i {
      width: 24px;
      color: #999;
      margin-right: 8px;
    }
    
    .category-nav .fa-angle-right {
      position: absolute;
      right: 16px;
      color: #999;
    }
    
    .submenu {
      position: absolute;
      left: 100%;
      top: 0;
      width: 320px;
      background-color: #fff;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      border-radius: 0 8px 8px 0;
      padding: 16px;
      display: none;
      z-index: 20;
    }
    
    .category-nav li:hover .submenu {
      display: block;
    }
    
    .submenu-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 8px;
    }
    
    .submenu a {
      font-size: 14px;
      padding: 8px;
      border-radius: 4px;
    }
    
    /* 中间轮播图 */
    .carousel-section {
      width: 100%;
    }
    
    @media (min-width: 1024px) {
      .carousel-section {
        width: 66.666667%;
      }
    }
    
    .carousel {
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
      height: 400px;
      position: relative;
    }
    
    .carousel-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    
    .carousel-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to right, rgba(0, 0, 0, 0.4), transparent);
      display: flex;
      align-items: center;
    }
    
    .carousel-content {
      margin-left: 48px;
      color: #fff;
      max-width: 512px;
    }
    
    .carousel-title {
      font-size: clamp(24px, 3vw, 40px);
      font-weight: bold;
      margin-bottom: 8px;
      text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    }
    
    .carousel-description {
      font-size: 18px;
      margin-bottom: 24px;
      text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    }
    
    .carousel-button {
      background-color: #fff;
      color: #FF4400;
      padding: 8px 24px;
      border-radius: 9999px;
      font-weight: 500;
      border: none;
      cursor: pointer;
    }
    
    .carousel-button:hover {
      background-color: #f5f5f5;
    }
    
    .carousel-indicators {
      position: absolute;
      bottom: 16px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      gap: 8px;
    }
    
    .carousel-indicator {
      width: 12px;
      height: 12px;
      border-radius: 9999px;
      background-color: #fff;
      opacity: 0.5;
      cursor: pointer;
    }
    
    .carousel-indicator.active {
      opacity: 1;
    }
    
    .carousel-control {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      width: 40px;
      height: 40px;
      background-color: rgba(255, 255, 255, 0.3);
      border-radius: 9999px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      cursor: pointer;
    }
    
    .carousel-control:hover {
      background-color: rgba(255, 255, 255, 0.5);
    }
    
    .carousel-control.prev {
      left: 16px;
    }
    
    .carousel-control.next {
      right: 16px;
    }
    
    .carousel-thumbnails {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 8px;
      margin-top: 8px;
    }
    
    .thumbnail {
      height: 100px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
      position: relative;
    }
    
    .thumbnail img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    
    .thumbnail:hover img {
      transform: scale(1.1);
    }
    
    .thumbnail-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(0, 0, 0, 0.5), transparent);
      display: flex;
      align-items: flex-end;
    }
    
    .thumbnail-label {
      color: #fff;
      padding: 8px;
      font-size: 14px;
      font-weight: 500;
    }
    
    /* 右侧用户信息和快捷功能 */
    .user-section {
      width: 100%;
      background-color: #fff;
      border-radius: 8px;
      box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
      overflow: hidden;
    }
    
    @media (min-width: 1024px) {
      .user-section {
        width: 16.666667%;
      }
    }
    
    .user-profile {
      padding: 16px;
      border-bottom: 1px solid #e5e5e5;
    }
    
    .user-info {
      display: flex;
      align-items: center;
    }
    
    .user-avatar {
      width: 48px;
      height: 48px;
      border-radius: 9999px;
      object-fit: cover;
    }
    
    .user-details {
      margin-left: 12px;
    }
    
    .user-greeting {
      font-size: 14px;
      font-weight: 500;
    }
    
    .user-actions {
      display: flex;
      gap: 8px;
      margin-top: 8px;
    }
    
    .user-action-button {
      font-size: 12px;
      padding: 4px 12px;
      border-radius: 9999px;
    }
    
    .user-action-primary {
      background-color: #FF4400;
      color: #fff;
      border: none;
    }
    
    .user-action-outline {
      border: 1px solid #FF4400;
      color: #FF4400;
      background-color: transparent;
    }
    
    .user-messages {
      padding: 16px;
      border-bottom: 1px solid #e5e5e5;
    }
    
    .user-messages-title {
      font-size: 14px;
      font-weight: 500;
      margin-bottom: 12px;
    }
    
    .message-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    
    .message-item {
      display: flex;
      align-items: center;
      font-size: 12px;
      color: #666;
    }
    
    .message-item:hover {
      color: #FF4400;
    }
    
    .message-indicator {
      width: 4px;
      height: 4px;
      background-color: #FF4400;
      border-radius: 9999px;
      margin-right: 8px;
    }
    
    .user-quick-actions {
      padding: 16px;
    }
    
    .quick-actions-title {
      font-size: 14px;
      font-weight: 500;
      margin-bottom: 12px;
    }
    
    .quick-actions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
    }
    
    .quick-action {
      padding: 8px;
      text-align: center;
      border-radius: 4px;
    }
    
    .quick-action:hover {
      background-color: #f5f5f5;
    }
    
    .quick-action-icon {
      width: 32px;
      height: 32px;
      margin: 0 auto;
      background-color: #f0f9ff;
      border-radius: 9999px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    
    .quick-action-label {
      font-size: 12px;
      margin-top: 4px;
    }
    
    /* 平台服务 */
    .services-section {
      padding: 32px 0;
      background-color: #fff;
    }
    
    .services-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    
    @media (min-width: 768px) {
      .services-grid {
        grid-template-columns: repeat(4, 1fr);
      }
    }
    
    .service-card {
      display: flex;
      align-items: center;
      padding: 16px;
    }
    
    .service-card:hover {
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    
    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 9999px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-right: 16px;
    }
    
    .service-icon-blue {
      background-color: #f0f9ff;
    }
    
    .service-icon-green {
      background-color: #f0fdf4;
    }
    
    .service-icon-yellow {
      background-color: #fefce8;
    }
    
    .service-icon-red {
      background-color: #fff1f2;
    }
    
    .service-icon i {
      font-size: 20px;
    }
    
    .service-icon-blue i {
      color: #3b82f6;
    }
    
    .service-icon-green i {
      color: #22c55e;
    }
    
    .service-icon-yellow i {
      color: #eab308;
    }
    
    .service-icon-red i {
      color: #ef4444;
    }
    
    .service-title {
      font-weight: 500;
      color: #333;
    }
    
    .service-description {
      font-size: 12px;
      color: #999;
      margin-top: 4px;
    }
    
    /* 热卖推荐 */
    .hot-sales-section {
      padding: 32px 0;
      background-color: #f5f5f5;
    }
    
    .section-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
    }
    
    .section-title {
      font-size: 20px;
      font-weight: bold;
    }
    
    .section-link {
      color: #FF4400;
      font-size: 14px;
    }
    
    .section-link:hover {
      text-decoration: underline;
    }
    
    .products-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    
    @media (min-width: 768px) {
      .products-grid {
        grid-template-columns: repeat(4, 1fr);
      }
    }
    
    @media (min-width: 1024px) {
      .products-grid {
        grid-template-columns: repeat(6, 1fr);
      }
    }
    
    .product-card {
      background-color: #fff;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    }
    
    .product-card:hover {
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    
    .product-image {
      height: 192px;
      position: relative;
      overflow: hidden;
    }
    
    .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: 8px;
      left: 8px;
      background-color: #FF4400;
      color: #fff;
      font-size: 12px;
      padding: 2px 8px;
      border-radius: 4px;
    }
    
    .product-badge-secondary {
      background-color: #FFB800;
    }
    
    .product-details {
      padding: 12px;
    }
    
    .product-title {
      font-size: 14px;
      font-weight: 500;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      height: 40px;
      margin-bottom: 8px;
    }
    
    .product-price {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
    }
    
    .product-current-price {
      color: #FF4400;
      font-weight: bold;
    }
    
    .product-original-price {
      color: #999;
      font-size: 12px;
      text-decoration: line-through;
      margin-left: 4px;
    }
    
    .product-sales {
      color: #999;
      font-size: 12px;
    }
    
    .product-rating {
      display: flex;
      align-items: center;
      margin-top: 8px;
    }
    
    .stars {
      display: flex;
      color: #facc15;
      font-size: 12px;
    }
    
    .rating-value {
      color: #999;
      font-size: 12px;
      margin-left: 4px;
    }
    
    /* 行业市场 */
    .industry-section {
      padding: 32px 0;
      background-color: #fff;
    }
    
    .industry-tabs {
      display: flex;
      gap: 16px;
    }
    
    .industry-tab {
      color: #666;
      font-size: 14px;
    }
    
    .industry-tab:hover {
      color: #FF4400;
    }
    
    .industry-grid {
      display: grid;
      grid-template-columns: repeat(1, 1fr);
      gap: 16px;
    }
    
    @media (min-width: 768px) {
      .industry-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    
    @media (min-width: 1024px) {
      .industry-grid {
        grid-template-columns: repeat(4, 1fr);
      }
    }
    
    .industry-card {
      border: 1px solid #e5e5e5;
      border-radius: 8px;
      overflow: hidden;
    }
    
    .industry-card:hover {
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    
    .industry-image {
      height: 192px;
      position: relative;
    }
    
    .industry-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    
    .industry-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
      display: flex;
      align-items: flex-end;
      padding: 16px;
    }
    
    .industry-info h3 {
      color: #fff;
      font-weight: bold;
    }
    
    .industry-info p {
      color: rgba(255, 255, 255, 0.9);
      font-size: 14px;
      margin-top: 4px;
    }
    
    .industry-links {
      padding: 12px;
    }
    
    .industry-links-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
    }
    
    .industry-link {
      color: #666;
      font-size: 14px;
      text-align: center;
      padding: 8px;
    }
    
    .industry-link:hover {
      color: #FF4400;
    }
    
    /* 特色市场 */
    .featured-section {
      padding: 32px 0;
      background-color: #f5f5f5;
    }
    
    .featured-grid {
      display: grid;
      grid-template-columns: repeat(1, 1fr);
      gap: 16px;
    }
    
    @media (min-width: 768px) {
      .featured-grid {
        grid-template-columns: repeat(3, 1fr);
      }
    }
    
    .featured-card {
      background-color: #fff;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    }
    
    .featured-card:hover {
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    
    .featured-image {
      height: 192px;
      position: relative;
      overflow: hidden;
    }
    
    .featured-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    
    .featured-card:hover .featured-image img {
      transform: scale(1.05);
    }
    
    .featured-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 16px;
    }
    
    .featured-title {
      color: #fff;
      font-size: 18px;
      font-weight: bold;
    }
    
    .featured-description {
      color: rgba(255, 255, 255, 0.9);
      font-size: 14px;
      margin-top: 4px;
    }
    
    .featured-button {
      background-color: #fff;
      color: #FF4400;
      font-size: 12px;
      padding: 4px 16px;
      border-radius: 9999px;
      margin-top: 12px;
      align-self: flex-start;
    }
    
    .featured-button:hover {
      background-color: #f5f5f5;
    }
    
    /* 底部信息 */
    .footer {
      background-color: #fff;
      border-top: 1px solid #e5e5e5;
    }
    
    .footer-main {
      padding: 32px 0;
    }
    
    .footer-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    
    @media (min-width: 768px) {
      .footer-grid {
        grid-template-columns: repeat(5, 1fr);
      }
    }
    
    .footer-column h3 {
      font-weight: 500;
      margin-bottom: 16px;
    }
    
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    
    .footer-link {
      color: #666;
      font-size: 14px;
    }
    
    .footer-link:hover {
      color: #FF4400;
    }
    
    .footer-qrcode {
      border: 1px solid #e5e5e5;
      padding: 8px;
      display: inline-block;
    }
    
    .footer-qrcode img {
      width: 80px;
      height: 80px;
    }
    
    .footer-qrcode-label {
      font-size: 12px;
      color: #666;
      margin-top: 4px;
    }
    
    .footer-social {
      display: flex;
      gap: 12px;
    }
    
    .social-icon {
      width: 32px;
      height: 32px;
      border-radius: 9999px;
      background-color: #f5f5f5;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #666;
    }
    
    .social-icon:hover {
      background-color: #FF4400;
      color: #fff;
    }
    
    .footer-contact {
      font-size: 12px;
      color: #666;
      margin-top: 16px;
    }
    
    .footer-bottom {
      border-top: 1px solid #e5e5e5;
      padding: 24px 0;
    }
    
    .footer-links-bottom {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 16px;
    }
    
    .footer-link-bottom {
      color: #666;
      font-size: 12px;
    }
    
    .footer-link-bottom:hover {
      color: #FF4400;
    }
    
    .footer-copyright {
      font-size: 12px;
      color: #666;
      margin-bottom: 8px;
    }
    
    /* 移动端底部导航 */
    .mobile-nav {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background-color: #fff;
      border-top: 1px solid #e5e5e5;
      padding: 8px 16px;
      z-index: 40;
      display: none;
    }
    
    @media (max-width: 1023px) {
      .mobile-nav {
        display: block;
      }
    }
    
    .mobile-nav-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 8px;
      text-align: center;
    }
    
    .mobile-nav-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      color: #666;
      text-decoration: none;
    }
    
    .mobile-nav-item.active {
      color: #FF4400;
    }
    
    .mobile-nav-icon {
      font-size: 20px;
    }
    
    .mobile-nav-label {
      font-size: 12px;
      margin-top: 4px;
    }
    
    /* 移动端底部导航占位 */
    .mobile-nav-placeholder {
      height: 80px;
      display: none;
    }
    
    @media (max-width: 1023px) {
      .mobile-nav-placeholder {
        display: block;
      }
    }
    
    /* 返回顶部按钮 */
    .back-to-top {
      position: fixed;
      bottom: 80px;
      right: 16px;
      width: 40px;
      height: 40px;
      background-color: rgba(255, 68, 0, 0.8);
      color: #fff;
      border-radius: 9999px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      z-index: 40;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
    }
    
    @media (min-width: 1024px) {
      .back-to-top {
        bottom: 16px;
      }
    }
    
    .back-to-top.visible {
      opacity: 1;
      visibility: visible;
    }
    
    .back-to-top:hover {
      background-color: #FF4400;
    }
    .i-phone {
    display: inline-block;
    width: 13px;
    height: 16px;
    background: url(../images/i-status1.png) no-repeat 0 0;
}
.top-header-left i{
    display: flex;float: left;
    margin-top: 3px;
}