* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', 'Inter', system-ui, sans-serif;
        }
        :root {
            --primary-color: #0a2b70;
            --secondary-color: #f59e0b;
            --text-dark: #333;
            --text-gray: #666;
            --light-bg: #fafafa;
            --white: #fff;
            --transition: all 0.3s ease;
            /* 导航交互色值优化 */
            --nav-hover-bg: #f8f5e6;
            --nav-active-bg: #f0e6c2;
            --nav-hover-text: #242c81; /* 更深的主色，提升对比 */
            --dropdown-btn-hover: rgba(201, 162, 39, 0.15); /* 下拉按钮悬停背景 */
        }
        body {
            line-height: 1.6;
            color: var(--text-dark);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
         ul {
            list-style: none;
        }
        .container {
            max-width: 1440px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .allcontainer {
            margin: 0 auto;
            padding: 0 20px;
        }

        .btn {
            display: inline-block;
            padding: 10px 20px;
            background: var(--primary-color);
            color: var(--white);
            transition: var(--transition);
            font-size: 1.1rem;
            font-weight: 600;
            border: 2px solid var(--primary-color);
            border-radius: 50px;
        }
        .btn:hover {
            transform: translateY(-2px);
        }
        /* 板块查看更多按钮 */
        .section-more {
            margin-top: 50px;
            text-align: center;
        }
        /* 渐入动画 */
        .fade-in {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
       
        /* Top Header Bar */
        .top-header {
            background-color: #f7f7f7;
            color: #2d3748;
            padding: 5px 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.9rem;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1001;
        }
        .top-contact-info {
            display: flex;
            gap: 20px;
        }
        .top-contact-info span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .social-media {
            display: flex;
            gap: 15px;
        }
        .social-media a {
            color: #4a5568;
            transition: color 0.2s;
            font-size: 1.1rem;
        }
        .social-media a:hover {
            color: #0a2b70;
        }

        /* Main Navigation Container */
        .main-nav-container {
            background-color: #fff;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            padding: 0 5%;
            position: fixed;
            top: 34px; /* Height of top-header */
            left: 0;
            right: 0;
            z-index: 1000;
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        /* Logo Section */
        .logo {
            display: flex;
            align-items: center;
        }
        .logo i {
            color: #0a2b70;
            margin-right: 10px;
            font-size: 2rem;
        }
         .logo img{
            max-height: 50px;
         }
        /* Desktop Navigation Menu */
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-item {
            position: relative;
        }
        .nav-link {
            display: flex;
            align-items: center;
            padding: 12px 18px;
            border-radius: 6px;
            font-weight: 600;
            color: #333;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .nav-link i {
            margin-left: 8px;
            font-size: 0.8rem;
            color: #a0aec0;
        }
        .nav-link:hover {
            background-color: #f7f7f7;
            color: #0a2b70;
        }
        .nav-link.active {
            color: #0a2b70;
            font-weight: 700;
        }

        /* Submenu */
        .submenu {
            position: absolute;
            top: 100%;
            left: 0;
            background-color: #fff;
            min-width: 200px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            border-radius: 8px;
            padding: 8px 0;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
            z-index: 100;
        }
        .nav-item:hover .submenu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .submenu .nav-link {
            padding: 12px 20px;
            border-radius: 0;
            justify-content: space-between;
        }
        .submenu .nav-link:hover {
            background-color: #f7f7f7;
        }

        /* Right Side Actions (Search, Language) */
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .search-btn, .lang-btn, .mobile-lang-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            width: 40px;
            border-radius: 50%;
            background-color: #f7f7f7;
            color: #0a2b70;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .search-btn:hover, .lang-btn:hover {
            background-color: #e2e8f0;
        }
        .lang-btn {
            font-weight: 600;
            font-size: 0.9rem;
            width: auto;
            padding: 0 15px;
            gap: 5px;
            border-radius: 5px;
        }

        /* Search Overlay and Modal */
        .search-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 9999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            padding-top: 120px; /* Position below navigation */
        }
        .search-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .search-modal {
            background-color: rgb(255 255 255 / 52%);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: 12px;
            width: 90%;
            max-width: 600px;
            padding: 30px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
            transform: translateY(-20px);
            transition: transform 0.3s ease;
        }
        .search-overlay.active .search-modal {
            transform: translateY(0);
        }
        .search-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }
        .search-header h3 {
            color: #2d3748;
            font-size: 1.5rem;
            font-weight: 600;
        }
        .close-search {
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #a0aec0;
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        .close-search:hover {
            background-color: #f7f7f7;
            color: #4a5568;
        }
        .search-input-wrapper {
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex: 1;
            padding: 15px 20px;
            border: 2px solid #e2e8f0;
            border-radius: 5px;
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        .search-input:focus {
            outline: none;
            border-color: #0a2b70;
            box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
        }
        .search-submit {
            color: #0a2b70;
            border: none;
            border-radius: 8px;
            padding: 0 25px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .search-submit:hover {
            background-color: #80a2d4;
        }
        .search-hint {
            margin-top: 15px;
            color: #718096;
            font-size: 0.9rem;
            text-align: center;
        }

        /* Mobile Navigation */
        .mobile-header {
            display: none;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            padding: 0 5%;
            background-color: #fff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1002;
        }
        .hamburger {
            font-size: 1.5rem;
            color: #4a5568;
            cursor: pointer;
        }
        .mobile-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #2d3748;
        }
        .mobile-nav-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        .mobile-nav-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .mobile-nav-menu {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 280px;
            background-color: #fff;
            padding: 80px 30px 30px;
            transform: translateX(-100%);
            transition: transform 0.4s ease;
            z-index: 1000;
            overflow-y: auto;
        }
        .mobile-nav-menu.active {
            transform: translateX(0);
        }
        .mobile-nav-item {
            border-bottom: 1px solid #e2e8f0;
        }
        .mobile-nav-link {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 0;
            font-weight: 500;
            color: #4a5568;
        }
        .mobile-nav-link.active {
            color: #0a2b70;
            font-weight: 700px;
        }
        .mobile-nav-link i:last-child {
            transition: transform 0.3s ease;
        }
        .mobile-nav-link.active i:last-child {
            transform: rotate(180deg);
        }
        .mobile-submenu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .mobile-submenu.active {
            max-height: 300px;
        }
        .mobile-submenu .mobile-nav-link {
            padding-left: 15px;
            padding-top: 15px;
            padding-bottom: 15px;
            font-size: 0.95rem;
        }

        /* Demo Content */
        .demo-content {
            padding: 40px 5%;
            max-width: 1200px;
            margin: 0 auto;
        }
        .demo-content h1 {
            margin-bottom: 20px;
            color: #2d3748;
        }
        .demo-content p {
            line-height: 1.6;
            margin-bottom: 20px;
            color: #4a5568;
        }
        .screen-size {
            background-color: #e6fffa;
            padding: 20px;
            border-radius: 10px;
            margin-top: 30px;
            text-align: center;
            font-weight: 500;
        }

        /* Responsive Styles */
        @media (max-width: 1024px) {
            .nav-menu {
                gap: 5px;
            }
            .nav-link {
                padding: 12px 14px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 900px) {
            .top-header, .desktop-search {
                display: none;
            }
            .main-nav-container {
                display: none;
            }
            .mobile-header {
                display: flex;
            }
            
            .screen-size {
                background-color: #fed7d7;
            }
        }
        @media (max-width: 768px) {
            .search-modal {
                width: 95%;
                padding: 20px;
            }
            .search-input-wrapper {
                flex-direction: column;
            }
            .search-submit {
                padding: 15px;
            }
        }
          /* --- CTA 核心样式 --- */
        .cta-section {
            padding: 80px 20px;
            background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
            text-align: center;
        }

        .cta-container {
            margin: 0 auto;
        }

        .cta-title {
            font-size: 2.5rem;
            color: #ffffff;
            margin-bottom: 16px;
            font-weight: 700;
            line-height: 1.2;
        }

        .cta-description {
            font-size: 1.125rem;
            color: #dbeafe;
            margin-bottom: 32px;
            line-height: 1.6;
        }

        .cta-button {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 42px;
            background-color: #f59e0b;
            color: #1e3a8a;
            font-size: 1.125rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(245, 158, 11, 0.35);
        }

        .cta-button:hover {
            background-color: #d97706;
            transform: translateY(-3px);
            box-shadow: 0 7px 22px rgba(245, 158, 11, 0.45);
        }

        /* 手机端响应式适配 */
        @media (max-width: 768px) {
            .cta-title {
                font-size: 1.875rem;
            }

            .cta-description {
                font-size: 1rem;
            }

            .cta-button {
                padding: 14px 32px;
                font-size: 1rem;
                width: 100%;
                justify-content: center;
            }
        }
     
        /* 页脚 */
        footer {
            background: var(--primary-color);
            color: var(--white);
            padding: 40px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 50px;
            margin-bottom: 20px;
        }
        .footer-item h3 {
            font-size: 1.4rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 12px;
            font-weight: 600;
        }
        .footer-item h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 3px;
            background: #f59e0b;
        }
          .footer-item p, .footer-item a {
            color: #e9e9e9;
            margin-bottom: 5px;
            display: block;
            width: fit-content;
            transition: color 0.3s;
            font-size: 1rem;
        }
        .footer-item a:hover {
  /* 悬停文字变色（自定义） */
  color: #0066cc;
  /* 关键：无背景、无内边距，空白区域不会触发 */
  background: none;
}
        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #e9e9e9;
        }

     
    /* 右侧悬浮容器 */
    .float-sidebar {
      position: fixed;
      right: 20px;
      top: 75%;
      transform: translateY(-50%);
      z-index: 9999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    /* 圆形按钮通用样式 */
    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #25d366;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      cursor: pointer;
      box-shadow: 0 3px 10px rgba(0,0,0,0.2);
      transition: all 0.3s ease;
      border: none;
      position: relative;
      text-decoration: none;
    }

    /* 按钮分别配色 */
    .btn-phone { background: #007bff; }
    .btn-whatsapp { background: #25d366; }
    .btn-wechat { background: #07c160; } /* 微信绿色 */
    .btn-email { background: #ff5722; }
    .btn-top { background: #333; }

    /* 按钮 hover 效果 */
    .float-btn:hover {
      transform: scale(1.1);
      text-decoration: none;
    }

    /* 二维码弹出（通用 WhatsApp + 微信） */
    .qrcode {
      position: absolute;
      right: 65px;
      top: 70%;
      transform: translateY(-50%);
      width: 160px;
      height: 160px;
      background: #fff;
      padding: 8px;
      border-radius: 8px;
      box-shadow: 0 3px 15px rgba(0,0,0,0.15);
      display: none;
    }

    .qrcode img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: 4px;
    }

    /* PC 端 hover 显示 */
    @media (min-width: 769px) {
      .btn-whatsapp:hover .qrcode,
      .btn-wechat:hover .qrcode {
        display: block !important;
      }
    }

    /* 点击激活显示 */
    .btn-whatsapp.active .qrcode,
    .btn-wechat.active .qrcode {
      display: block;
    }

    /* 移动端适配 */
    @media (max-width: 768px) {
      .float-sidebar {
        top: auto;
        bottom: 80px;
        transform: none;
        right: 15px;
        gap: 8px;
      }

      .float-btn {
        width: 40px;
        height: 40px;
        font-size: 18px;
      }

      .qrcode {
        width: 130px;
        height: 130px;
        right: 55px;
      }
    }
       
          @media (max-width: 768px) {
            
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
         /* 语言选择容器 */
        .language-selector {
            position: relative;
            display: inline-block;
        }

        /* 主按钮样式 + 地球仪图标 */
        .lang-main-btn {
            display: inline-flex;
            align-items: center;
            gap: 2px;
            padding: 6px 6px;
            background: #f7f7f7;
            color: #0a2b70;
            border: none;
            border-radius: 6px;
            font-size: 16px;
            cursor: pointer;
            transition: background 0.2s;
            user-select: none;
        }

        /* 图标样式 */
        .lang-main-btn i {
            font-style: normal;
            font-size: 18px;
        }

        .lang-main-btn:hover {
            background: #e2e8f0;
        }

        /* 下拉菜单：默认隐藏 */
        .lang-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            flex-direction: column;
            gap: 1px;
            background: #fff;
            border-radius: 6px;
            overflow: hidden;
            z-index: 999;
            display: none;
            right: 0
        }

        /* 电脑端：悬停弹出 */
        .language-selector:hover .lang-dropdown {
            display: flex;
        }

        /* JS 控制显示类（手机端） */
        .lang-dropdown.show {
            display: flex;
        }

        /* 下拉选项链接样式 */
        .lang-option {
            padding: 6px 12px;
            background: #f7f7f7;
            color: #333;
            text-decoration: none;
            text-align: left;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 16px;
        }

        .lang-option:hover {
            background: #e2e8f0;
        }
        
               .top-banner {
            background-image: url(var(--banner-bg-url)); 
            background-size: cover; 
            background-position: center center;
            background-repeat: no-repeat; 
            background-attachment: scroll; 
            width: 100%;
            min-height: 400px; 
            display: flex;
            justify-content: center; 
            align-items: center; 
            padding: 2rem; 
            background-color: rgba(0, 0, 0, 0.3); 
            background-blend-mode: overlay; 
        }

        .banner-text-wrapper {
            padding: 2rem 6rem; 
            text-align: center; 
        }


        .banner2-title {
            font-size: 3rem; 
            color: #ffffff; 
            font-weight: 700; 
            margin-bottom: 1.5rem; 
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5); 
            text-align: center; 
        }

    
        .banner-breadcrumb {
            padding: 10px 0;
            font-size: 1.1rem; 
            color: #333; 
        }
        .banner-breadcrumb a{
            color: #333; text-decoration: none;
        }

       
        .banner-breadcrumb span {
            margin: 0 0.8rem;
            color: #dddddd;
        }

        @media (max-width: 768px) {
            .top-banner {
                min-height: 300px; 
                padding: 1rem;
            }

            .banner-text-wrapper {
                padding: 1.5rem 2rem; 
            }

            .banner-title {
                font-size: 2rem; 
                margin-bottom: 1rem; 
            }

            .banner-breadcrumb {
                font-size: 1rem; 
            }
        }