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

      body {
        font-family:
          -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        font-size: 16px;
        line-height: 1.5;
        color: #333;
        background-color: #f5f7fa;
        overflow-x: hidden;
        scroll-behavior: smooth;
      }

        /* 导航栏容器 */
      #top-nav-container {
        position: sticky;
        top: 0;
        z-index: 1000;
      }

      .top-nav {
         position: sticky;
        top: 0;
        z-index: 1000;
        background-color: #fff;
        /* box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); */
        width: 100%;
      }

      .nav-container {
        max-width: 1240px;
        margin: 0 auto;
        padding: 0 20px;
        height: 60px;
        display: flex;
        align-items: center;
        justify-content: space-between;
      }

      /* 品牌Logo */
      .logo {
        display: flex;
        align-items: center;
        gap: 10px;
      }

      .logo img {
        width: 36px;
        height: 36px;
      }

      .logo-text {
        font-size: 18px;
        font-weight: 600;
        color: #333;
      }

      /* 导航菜单 */
      .nav-menu {
        display: flex;
        gap: 32px;
      }

      .nav-item {
        font-size: 15px;
        color: #96a3b7;
        text-decoration: none;
        transition: color 0.3s ease;
      }

      .nav-item:hover {
        color: #667eea;
      }

      .nav-item.active {
        color: #667eea;
        font-weight: 500;
      }

      /* 用户操作区域 */
      .user-actions {
        display: flex;
        align-items: center;
        gap: 15px;
        position: relative;
      }

      .user-actions .icon {
        font-size: 18px;
        color: #96a3b7;
        cursor: pointer;
        transition: color 0.3s ease;
      }

      .user-actions .icon:hover {
        color: #667eea;
      }

      /* 搜索框 */
      .search-box {
        position: relative;
        display: flex;
        align-items: center;
      }

      .search-box input {
        width: 200px;
        height: 36px;
        padding: 0 40px 0 15px;
        border: 1px solid #e4e7ed;
        border-radius: 18px;
        font-size: 14px;
        outline: none;
        transition: all 0.3s ease;
      }

      .search-box input:focus {
        border-color: #667eea;
        /* width: 250px; */
      }

      .search-icon {
        position: absolute;
        right: 12px;
        font-size: 14px;
        color: #96a3b7;
        cursor: pointer;
      }

      /* 用户头像 */
      .user-avatar {
        width: 32px;
        height: 32px;
        border-radius: 50%;
        overflow: hidden;
        cursor: pointer;
        transition: all 0.3s ease;
      }

      .user-avatar:hover {
        transform: scale(1.05);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
      }

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

      /* 用户头像容器 */
      .user-avatar-wrapper {
        position: relative;
        cursor: pointer;
        display: inline-block;
        overflow: visible;
      }

      /* 下拉菜单 */
      .user-dropdown {
        position: absolute;
        top: 100%;
        right: 0;
        width: 240px;
        background-color: #fff;
        border-radius: 8px;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        z-index: 9999;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        margin-top: 8px;
      }

      .user-avatar-wrapper:hover .user-dropdown {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
      }

      /* 下拉菜单头部 */
      .dropdown-header {
        display: flex;
        align-items: center;
        padding: 16px;
        border-bottom: 1px solid #f0f0f0;
      }

      .dropdown-avatar {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        overflow: hidden;
        margin-right: 12px;
      }

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

      .dropdown-user-info {
        flex: 1;
      }

      .dropdown-username {
        font-size: 14px;
        font-weight: 600;
        color: #333;
        margin: 0;
      }

      /* 余额信息 */
      .dropdown-balance {
        padding: 16px;
        background-color: #f9fbfd;
        border-bottom: 1px solid #f0f0f0;
      }

      .balance-label {
        font-size: 12px;
        color: #999;
        margin: 0 0 4px 0;
      }

      .balance-amount {
        font-size: 18px;
        font-weight: 600;
        color: #ff4d4f;
        margin: 0;
      }

      /* 下拉菜单项 */
      .dropdown-menu {
        padding: 8px 0;
      }

      .dropdown-item {
        display: block;
        padding: 10px 16px;
        font-size: 14px;
        color: #333;
        text-decoration: none;
        transition: all 0.2s ease;
      }

      .dropdown-item:hover {
        background-color: #f0f4f8;
        color: #1e78f0;
      }

      .dropdown-item.logout {
        color: #ff4d4f;
        border-top: 1px solid #f0f0f0;
        margin-top: 8px;
      }

      .dropdown-item.logout:hover {
        background-color: #fff2f0;
        color: #ff4d4f;
      }

      /* ===============================================
   /* 中等屏幕 */
      @media (max-width: 992px) {
        /* 导航栏调整 */
        .nav-menu {
          display: none;
        }
      }

      /* 小屏幕 */
      @media (max-width: 768px) {
        /* 导航栏调整 */
        .nav-left-logo {
          display: none;
        }

        /* 搜索框自适应撑满 */
        .user-actions {
          width: 100%;
          flex: 1;
          justify-content: flex-end;
        }

        .search-box {
          flex: 1;
          max-width: none;
        }

        .search-box input {
          width: 100%;
        }

        /* Banner调整 */
        .banner {
          padding: 60px 20px;
        }

        .banner-content {
          flex-direction: column;
          text-align: center;
        }

        .banner-text {
          max-width: 100%;
          text-align: center;
        }

        .banner-title {
          font-size: 28px;
        }

        .banner-buttons {
          justify-content: center;
        }

        .banner-images {
          max-width: 100%;
        }
      }

      /* 超小屏幕 */
      @media (max-width: 480px) {
        /* 导航栏调整 */
        .nav-container {
          padding: 0 10px;
        }

        /* Banner调整 */
        .banner {
          padding: 40px 10px;
        }

        .banner-text {
          padding: 20px;
        }

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

        .banner-buttons {
          flex-direction: column;
          align-items: center;
        }

        .banner-btn {
          width: 100%;
          max-width: 200px;
          text-align: center;
        }
      }
 /* ===============================================
         5. 底部区域样式
         =============================================== */

      /* 底部宣传区域 */
      .footer-cta {
        background-color: #1e78f0;
        padding: 60px 20px;
        text-align: center;
        color: #fff;
      }

      .cta-container {
        max-width: 1240px;
        margin: 0 auto;
      }

      .cta-title {
        font-size: 32px;
        font-weight: 700;
        margin-bottom: 16px;
      }

      .cta-highlight {
        color: #ffd700;
      }

      .cta-desc {
        font-size: 16px;
        /* margin-bottom: 32px; */
        line-height: 1.5;
      }

      .cta-btn {
        display: inline-block;
        padding: 12px 32px;
        background-color: transparent;
        color: #fff;
        border: 2px solid #fff;
        border-radius: 4px;
        text-decoration: none;
        font-size: 14px;
        font-weight: 500;
        transition: all 0.3s ease;
      }

      .cta-btn:hover {
        background-color: #fff;
        color: #1e78f0;
      }

      /* 底部链接区域 */
      .footer {
        background-color: #fff;
        padding: 40px 20px 20px;
      }

      .footer-container {
        max-width: 1240px;
        margin: 0 auto;
        display: flex;
        justify-content: space-around;
        margin-bottom: 40px;
      }

      .footer-section-title {
        font-size: 16px;
        font-weight: 600;
        color: #333;
        margin-bottom: 20px;
      }

      .footer-links {
        display: flex;
        flex-direction: column;
        gap: 12px;
      }

      .footer-links a {
        color: #666;
        text-decoration: none;
        font-size: 14px;
        transition: color 0.3s ease;
      }

      .footer-links a:hover {
        color: #1e78f0;
      }

      .footer-contact p {
        color: #666;
        font-size: 14px;
        margin-bottom: 8px;
      }

      /* 友情链接 */
      .footer-links-section {
        background-color: #f9fbfd;
        padding: 20px;
        margin-bottom: 20px;
      }

      .footer-links-container {
        max-width: 1240px;
        margin: 0 auto;
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
      }

      .links-label {
        color: #999;
        font-size: 14px;
        white-space: nowrap;
      }

      .links-list {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
      }

      .links-list a {
        color: #666;
        text-decoration: none;
        font-size: 14px;
        transition: color 0.3s ease;
      }

      .links-list a:hover {
        color: #1e78f0;
      }

      .apply-link {
        color: #1e78f0 !important;
      }

      /* 版权信息 */
      .footer-copyright {
        text-align: center;
        color: #999;
        font-size: 14px;
        padding-top: 20px;
        border-top: 1px solid #e4e7ed;
      }

      /* ===============================================
         6. 其他功能区域样式
         =============================================== */

      /* 公告弹框样式 */
      .announcement-modal {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 9999;
        opacity: 1;
        transition: opacity 0.3s ease;
      }

      .announcement-modal.hiding {
        opacity: 0;
      }

      .announcement-content {
        background-color: #fff;
        border-radius: 8px;
        width: 500px;
        height: 360px;
        max-width: 90%;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        position: relative;
        overflow: hidden;
        transform: scale(1);
        transition: transform 0.3s ease;
      }

      .announcement-modal.hiding .announcement-content {
        transform: scale(0.9);
      }

      .close-btn {
        position: absolute;
        top: 10px;
        right: 10px;
        background: none;
        border: none;
        font-size: 24px;
        cursor: pointer;
        color: #96a3b7;
        z-index: 10;
      }

      .close-btn:hover {
        color: #667eea;
      }

      .announcement-header {
        height: 148px;
        padding: 60px 20px 20px 20px;
        background: linear-gradient(
          180deg,
          rgba(158, 218, 255, 0.7) 0,
          rgba(232, 240, 245, 0) 100%
        );
        border-radius: 15px;
        border: none;
        font-size: 25px;
        font-weight: 700;
        text-align: center;
      }

      .announcement-title {
        font-size: 16px;
        font-weight: 600;
        color: #333;
        margin: 0;
      }

      .announcement-icon {
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
      }

      .announcement-icon img {
        width: 100%;
        height: 100%;
        object-fit: contain;
      }

      .announcement-body {
        position: relative !important;
        padding: 0 40px;
        margin-top: -20px;
        overflow: visible !important;
        min-height: 190px;
      }
      .alert-icon {
        position: absolute;
        width: 100px;
        height: 100px;
        right: 15px;
        top: -75px;
      }
      .alert-icon img {
        width: 100%;
        height: 100%;
        object-fit: contain;
      }
      .announcement-body p {
        padding: 25px 15px;
        background-color: #f8fafc;
        border-radius: 8px;
        font-size: 17px;
        text-align: center;
      }

      .confirm-btn {
        display: block;
        width: 80%;
        margin: 0 auto 20px;
        padding: 10px;
        background-color: #667eea;
        color: #fff;
        border: none;
        border-radius: 4px;
        font-size: 14px;
        font-weight: 500;
        cursor: pointer;
        transition: all 0.3s ease;
      }

      .confirm-btn:hover {
        background-color: #5a6fdd;
        box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
      }

      /* 6.2 侧边悬浮联系按钮样式 */
      /* 悬浮按钮容器 */
      .floating-contact {
        position: fixed;
        right: 30px;
        bottom: 30px;
        z-index: 9998;
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        gap: 15px;
      }

      /* 悬浮按钮 */
      .floating-btn {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 12px 20px;
        background-color: #667eea;
        color: #fff;
        border: none;
        border-radius: 50px;
        font-size: 14px;
        font-weight: 500;
        cursor: pointer;
        box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
        transition: all 0.3s ease;
        white-space: nowrap;
      }

      /* 悬浮按钮悬停效果 */
      .floating-btn:hover {
        background-color: #5a6fdd;
        box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        transform: translateY(-2px);
      }

      /* 按钮图标 */
      .btn-icon {
        font-size: 18px;
      }

      /* 联系卡片 */
      .contact-card {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) scale(0.9);
        background-color: #fff;
        border-radius: 8px;
        width: 280px;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        z-index: 9999;
        overflow: hidden;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
      }

      /* 联系卡片显示状态 */
      .contact-card.show {
        opacity: 1;
        visibility: visible;
        transform: translate(-50%, -50%) scale(1);
      }

      /* 联系卡片头部 */
      .contact-card-header {
        background-color: #667eea;
        color: #fff;
        padding: 16px 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
      }

      /* 联系卡片标题 */
      .contact-card-title {
        font-size: 16px;
        font-weight: 600;
        margin: 0;
      }

      /* 联系卡片关闭按钮 */
      .contact-close-btn {
        background: none;
        border: none;
        font-size: 20px;
        cursor: pointer;
        color: rgba(255, 255, 255, 0.8);
        transition: color 0.3s ease;
      }

      /* 联系卡片关闭按钮悬停效果 */
      .contact-close-btn:hover {
        color: #fff;
      }

      /* 联系卡片主体 */
      .contact-card-body {
        padding: 20px;
      }

      /* 联系项 */
      .contact-item {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 0;
        border-bottom: 1px solid #f0f0f0;
      }

      /* 最后一个联系项 */
      .contact-item:last-child {
        border-bottom: none;
      }

      /* 联系项图标 */
      .contact-icon {
        font-size: 14px;
        font-weight: 500;
        color: #666;
      }

      /* 联系项信息 */
      .contact-info {
        font-size: 14px;
        color: #333;
        font-weight: 500;
      }

      /* 联系卡片底部 */
      .contact-card-footer {
        padding: 16px 20px;
        background-color: #f9fbfd;
        border-top: 1px solid #f0f0f0;
      }

      /* 联系卡片备注 */
      .contact-note {
        font-size: 12px;
        color: #96a3b7;
        margin: 0;
        text-align: center;
      }

      /* 6.1 公告弹框样式 */
      /* 弹框遮罩层 */
      .announcement-modal {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        display: none;
        align-items: center;
        justify-content: center;
        z-index: 9999;
        opacity: 1;
        transition: opacity 0.3s ease;
      }

      /* 弹框隐藏动画 */
      .announcement-modal.hiding {
        opacity: 0;
      }

      /* 弹框内容容器 */
      .announcement-content {
        background-color: #fff;
        border-radius: 8px;
        width: 500px;
        height: 360px;
        max-width: 90%;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        position: relative;
        overflow: hidden;
        transform: scale(1);
        transition: transform 0.3s ease;
      }

      /* 弹框内容缩放动画 */
      .announcement-modal.hiding .announcement-content {
        transform: scale(0.9);
      }

      /* 关闭按钮 */
      .close-btn {
        position: absolute;
        top: 10px;
        right: 10px;
        background: none;
        border: none;
        font-size: 24px;
        cursor: pointer;
        color: #96a3b7;
        z-index: 10;
        transition: color 0.3s ease;
      }

      /* 关闭按钮悬停效果 */
      .close-btn:hover {
        color: #667eea;
      }

      /* 弹框头部 */
      .announcement-header {
        height: 148px;
        padding: 60px 20px 20px 20px;
        background: linear-gradient(
          180deg,
          rgba(158, 218, 255, 0.7) 0,
          rgba(232, 240, 245, 0) 100%
        );
        border-radius: 15px;
        font-size: 25px;
        font-weight: 700;
        text-align: center;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        gap: 10px;
      }

      /* 弹框标题 */
      .announcement-title {
        font-size: 16px;
        font-weight: 600;
        color: #333;
        margin: 0;
      }

      /* 弹框图标容器 */
      .announcement-icon {
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
      }

      /* 弹框图标 */
      .announcement-icon img {
        width: 100%;
        height: 100%;
        object-fit: contain;
      }

      /* 弹框主体内容 */
      .announcement-body {
        position: relative;
        padding: 0 40px;
        margin-top: -20px;
        overflow: visible;
        min-height: 190px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
      }

      /* 警告图标 */
      .alert-icon {
        position: absolute;
        width: 100px;
        height: 100px;
        right: 15px;
        top: -75px;
      }

      /* 警告图标图片 */
      .alert-icon img {
        width: 100%;
        height: 100%;
        object-fit: contain;
      }

      /* 弹框文本内容 */
      .announcement-body p {
        padding: 25px 15px;
        background-color: #f8fafc;
        border-radius: 8px;
        font-size: 17px;
        text-align: center;
        margin: 0 0 20px;
        line-height: 1.5;
      }

      /* 确认按钮 */
      .confirm-btn {
        display: block;
        width: 80%;
        margin: 0 auto 20px;
        padding: 12px;
        background-color: #667eea;
        color: #fff;
        border: none;
        border-radius: 4px;
        font-size: 14px;
        font-weight: 500;
        cursor: pointer;
        transition: all 0.3s ease;
        text-align: center;
      }

      /* 确认按钮悬停效果 */
      .confirm-btn:hover {
        background-color: #5a6fdd;
        box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
        transform: translateY(-2px);
      }

      /* 侧边悬浮联系按钮样式 */
      .floating-contact {
        position: fixed;
        right: 30px;
        bottom: 30px;
        z-index: 9998;
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        gap: 15px;
      }

      .floating-btn {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 12px 20px;
        background-color: #667eea;
        color: #fff;
        border: none;
        border-radius: 50px;
        font-size: 14px;
        font-weight: 500;
        cursor: pointer;
        box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
        transition: all 0.3s ease;
        white-space: nowrap;
      }

      .floating-btn:hover {
        background-color: #5a6fdd;
        box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        transform: translateY(-2px);
      }

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

      /* 联系卡片居中显示 */
      .contact-card {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) scale(0.9);
        background-color: #fff;
        border-radius: 8px;
        width: 280px;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        z-index: 9999;
        overflow: hidden;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
      }

      .contact-card.show {
        opacity: 1;
        visibility: visible;
        transform: translate(-50%, -50%) scale(1);
      }

      .contact-card-header {
        background-color: #667eea;
        color: #fff;
        padding: 16px 20px;
        display: flex;
        justify-content: space-between;
        align-items: center;
      }

      .contact-card-title {
        font-size: 16px;
        font-weight: 600;
        margin: 0;
      }

      .contact-close-btn {
        background: none;
        border: none;
        font-size: 20px;
        cursor: pointer;
        color: rgba(255, 255, 255, 0.8);
      }

      .contact-close-btn:hover {
        color: #fff;
      }

      .contact-card-body {
        padding: 20px;
      }

      .contact-item {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 0;
        border-bottom: 1px solid #f0f0f0;
      }

      .contact-item:last-child {
        border-bottom: none;
      }

      .contact-icon {
        font-size: 14px;
        font-weight: 500;
        color: #666;
      }

      .contact-info {
        font-size: 14px;
        color: #333;
        font-weight: 500;
      }

      .contact-card-footer {
        padding: 16px 20px;
        background-color: #f9fbfd;
        border-top: 1px solid #f0f0f0;
      }

      .contact-note {
        font-size: 12px;
        color: #96a3b7;
        margin: 0;
        text-align: center;
      }

      /* ===============================================
         7. 响应式设计
         =============================================== */

      /* 中等屏幕 */
      @media (max-width: 992px) {
        /* 导航栏调整 */
        .nav-menu {
          display: none;
        }

        /* 主题网格调整 */
        .market-grid {
          grid-template-columns: repeat(2, 1fr);
        }

        /* 最新主题网格调整 */
        .themes-grid {
          grid-template-columns: repeat(2, 1fr);
        }

        /* 平台数据统计调整 */
        .stat-card:not(:last-child)::after {
          display: none;
        }

        /* 底部区域调整 */


        .footer-section {
          text-align: center;
        }
      }

      /* 小屏幕 */
      @media (max-width: 768px) {
        /* 导航栏调整 */
        .nav-left {
          order: 2;
          width: 100%;
          justify-content: space-between;
        }

        .logo {
          order: 1;
        }

        .nav-right {
          order: 3;
          width: 100%;
        }

        .nav-menu {
          width: 100%;
          justify-content: space-around;
          gap: 16px;
        }

        .nav-item {
          font-size: 14px;
        }

        /* Banner调整 */
        .banner {
          height: 300px;
        }

        .banner-title {
          font-size: 28px;
        }

        .banner-subtitle {
          font-size: 16px;
        }

        /* 主内容区域调整 */
        .section-title {
          font-size: 24px;
        }

        .industry-platform {
          /* padding: 40px 20px; */
        }

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

        .data-grid {
          grid-template-columns: repeat(2, 1fr);
        }

        /* 底部区域调整 */
        .footer {
          padding: 30px 20px 20px;
        }

        .footer-section-title {
          font-size: 14px;
          margin-bottom: 16px;
        }

        .footer-links a {
          font-size: 13px;
        }

        .footer-contact p {
          font-size: 13px;
        }

        /* 侧边悬浮联系按钮调整 */
        .floating-contact {
          right: 20px;
          bottom: 20px;
        }

        .floating-btn {
          padding: 10px 16px;
          font-size: 13px;
        }

        .btn-icon {
          font-size: 16px;
        }

        .contact-card {
          width: 240px;
        }
      }

      /* 超小屏幕 */
      @media (max-width: 480px) {
        /* 导航栏调整 */
        .nav-item {
          font-size: 12px;
        }

        /* 下拉菜单响应式调整 */
        .user-dropdown {
          width: 200px;
          right: -20px;
        }

        .balance-amount {
          font-size: 16px;
        }

        /* Banner调整 */
        .banner {
          height: 250px;
        }

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

        /* 主内容区域调整 */
        .market-grid {
          grid-template-columns: 1fr;
        }

        .themes-grid {
          grid-template-columns: 1fr;
        }

        .data-grid {
          grid-template-columns: 1fr;
        }

        /* 底部区域调整 */


        .footer {
          padding: 20px 15px 15px;
        }

        .footer-section-title {
          font-size: 14px;
          margin-bottom: 12px;
        }

        .footer-links {
          gap: 10px;
        }

        .footer-links a {
          font-size: 13px;
        }

        .footer-contact p {
          font-size: 13px;
        }

        /* 公告弹框调整 */
        .announcement-content {
          width: 95%;
          max-width: none;
        }

        .announcement-header {
          padding: 16px;
        }

        .announcement-body {
          padding: 16px;
        }

        .confirm-btn {
          width: 90%;
          padding: 12px;
        }

        /* 侧边悬浮联系按钮调整 */
        .floating-contact {
          right: 15px;
          bottom: 15px;
        }

        .floating-btn {
          padding: 8px 12px;
          font-size: 12px;
        }

        .btn-icon {
          font-size: 14px;
        }

        .contact-card {
          width: 220px;
        }

        .contact-card-header {
          padding: 12px 16px;
        }

        .contact-card-title {
          font-size: 14px;
        }

        .contact-card-body {
          padding: 16px;
        }

        .contact-item {
          padding: 8px 0;
        }

        .contact-icon,
        .contact-info {
          font-size: 13px;
        }

        .contact-card-footer {
          padding: 12px 16px;
        }

        .contact-note {
          font-size: 11px;
        }

        /* 底部菜单调整 */
        .bottom-menu {
          height: 50px;
        }
        
        .bottom-menu-item {
          font-size: 10px;
        }
        
        .bottom-menu-item i {
          font-size: 18px;
        }
      }

      /* 底部菜单样式 */
      .bottom-menu {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 56px;
        background-color: #fff;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.08);
        display: none;
        align-items: center;
        justify-content: space-around;
        z-index: 9999;
      }
      
      .bottom-menu-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        color: #666;
        text-decoration: none;
        font-size: 12px;
        flex: 1;
        transition: color 0.3s ease;
      }
      
      .bottom-menu-item:hover,
      .bottom-menu-item.active {
        color: #667eea;
      }
      
      .bottom-menu-item i {
        font-size: 20px;
      }
      
      /* 小屏幕显示底部菜单 */
      @media (max-width: 768px) {
        .bottom-menu {
          display: flex;
        }
        
        /* 为底部菜单留出空间 */
        .footer {
          padding-bottom: 76px;
        }
        
        .main-content {
          padding-bottom: 76px;
        }
      }
         .user-login-buttons {
              display: flex;
              gap: 8px;
              align-items: center;
            }

            .user-login-btn {
              padding: 6px 12px;
              border: 1px solid #d9d9d9;
              border-radius: 4px;
              background-color: white;
              color: #333;
              cursor: pointer;
              font-size: 14px;
              transition: all 0.2s;
            }

            .user-login-btn:hover {
              border-color: #667eea;
              color: #667eea;
            }

            .user-register-btn {
              padding: 6px 12px;
              border: 1px solid #667eea;
              border-radius: 4px;
              background-color: #667eea;
              color: white;
              cursor: pointer;
              font-size: 14px;
              transition: all 0.2s;
            }

            .user-register-btn:hover {
              background-color: #764ba2;
              border-color: #764ba2;
            }