/* 导航栏样式 */
        .navbar {
            background-color: #4A5D23;
            height: 70px;
            position: fixed;  /* 只改这里：从relative改为fixed */
            top: 0;          /* 添加：固定在顶部 */
            left: 0;         /* 添加：从左边开始 */
            width: 100%;     /* 添加：占满宽度 */
            z-index: 1000;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }
        
        /* 导航栏占位元素 */
        .navbar-placeholder {
            height: 70px;
            visibility: hidden;
        }

        .navbar-container {
            width: 100%;
            padding-right: 15px;
            padding-left: 15px;
            margin-right: auto;
            margin-left: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        /* 响应式宽度 - 兼容Bootstrap */
        @media (min-width: 576px) {
            .navbar-container { max-width: 540px; }
        }

        @media (min-width: 768px) {
            .navbar-container { max-width: 720px; }
        }

        @media (min-width: 992px) {
            .navbar-container { max-width: 960px; }
        }

        @media (min-width: 1200px) {
            .navbar-container { max-width: 1140px; }
        }

        @media (min-width: 1400px) {
            .navbar-container { max-width: 1320px; }
        }

        /* Logo样式 */
        .navbar-brand {
            text-decoration: none;
        }

        .navbar-brand img {
            height: 40px;
            width: auto;
            transition: all 0.3s ease;
        }

        /* 桌面端菜单 */
        .navbar-menu {
            display: flex;
            list-style: none;
            gap: 30px;
            margin: 0;
        }

        .navbar-menu li a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 10px 0;
            transition: color 0.3s ease;
        }

        .navbar-menu li a:hover {
            color: #E26823;
        }

        /* 桌面端Contact Us按钮 */
        .contact-btn {
            color: white;
            text-decoration: none;
            border: 2px solid white;
            border-radius: 25px;
            padding: 8px 20px;
            font-weight: 600;
            transition: all 0.3s ease;
			background-color: #E26823;
        }

        .contact-btn:hover {
            background-color: #E26823;
            border-color: #D4AF37;
            color: #FFF;
        }

        /* 移动端按钮组 */
        .mobile-controls {
            display: none;
            align-items: center;
            gap: 15px;
        }

        .mobile-contact-btn {
            color: white;
            text-decoration: none;
            border: 1px solid white;
            border-radius: 20px;
            padding: 6px 12px;
            font-size: 0.875rem;
            font-weight: 600;
            transition: all 0.3s ease;
			background-color: #E26823;
        }

        .mobile-contact-btn:hover {
            background-color: #E26823;
            border-color: #D4AF37;
            color: #FFF;
        }

        /* 汉堡按钮 */
        .hamburger {
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            position: relative;
            width: 40px;
            height: 40px;
        }

        .hamburger-lines {
            position: relative;
            width: 24px;
            height: 18px;
            margin: auto;
        }

        .hamburger-lines span {
            display: block;
            height: 2px;
            background: white;
            position: absolute;
            left: 0;
            transition: all 0.3s ease;
            transform-origin: center;
        }

        .hamburger-lines span:nth-child(1) {
            top: 0;
            width: 100%;
        }

        .hamburger-lines span:nth-child(2) {
            top: 8px;
            width: 100%;
        }

        .hamburger-lines span:nth-child(3) {
            top: 16px;
            width: 100%;
        }

        /* 汉堡按钮变X动画 */
        .hamburger.active .hamburger-lines span:nth-child(1) {
            transform: rotate(45deg);
            top: 8px;
        }

        .hamburger.active .hamburger-lines span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active .hamburger-lines span:nth-child(3) {
            transform: rotate(-45deg);
            top: 8px;
        }

        /* 移动端侧边栏 */
        .sidebar {
            position: fixed;
            top: 70px;
            right: -100%;
            width: calc(100% - 20px);
            max-width: 350px;
            height: calc(100vh - 70px);
            background-color: #4A5D23;
            transition: right 0.3s ease;
            z-index: 999;
            overflow-y: auto;
        }

        .sidebar.active {
            right: 0;
        }

        /* 侧边栏菜单 */
        .sidebar-menu {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sidebar-menu li {
            border-bottom: 1px solid rgba(255, 255, 255, 0.3);
            margin-bottom: 8px;
        }

        .sidebar-menu li a {
            display: block;
            color: white;
            text-decoration: none;
            padding: 15px 20px;
            font-weight: 600;
            transition: color 0.3s ease;
        }

        .sidebar-menu li a:hover {
            color: #E26823;
        }

        /* 多语言按钮区域 */
        .language-section {
            padding: 20px;
            margin-top: 20px;
        }

        .language-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px;
        }

        .language-btn {
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-radius: 8px;
            color: white;
            padding: 10px 15px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.9rem;
        }

        .language-btn:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: white;
        }

        .language-btn.active {
            background-color: #D4AF37;
            border-color: #D4AF37;
            color: #198754;
        }

        /* 响应式设计 */
        @media (max-width: 991px) {
            .navbar-menu,
            .contact-btn {
                display: none;
            }

            .mobile-controls {
                display: flex;
            }
        }

        @media (max-width: 767px) {
            .navbar-brand img {
                height: 32px;
            }

            .navbar-container {
                padding: 0 15px;
            }
        }

        @media (max-width: 575px) {
            .navbar-brand img {
                height: 28px;
            }

            .mobile-contact-btn {
                font-size: 0.8rem;
                padding: 5px 10px;
            }
        }

        /* 内容区域样式 */
        .content {
            padding: 40px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .content h1 {
            color: #198754;
            margin-bottom: 20px;
        }

        .content p {
            margin-bottom: 15px;
            line-height: 1.6;
        }

        .demo-section {
            background: #f8f9fa;
            padding: 30px;
            border-radius: 8px;
            margin: 30px 0;
        }

        .demo-section h2 {
            color: #198754;
            margin-bottom: 15px;
        }

        /* 防止内容在侧边栏打开时滚动 */
        body.sidebar-open {
            overflow-x: hidden;
        }