:root {
            --primary-light: #e3f2fd; /*浅青色*/
            --primary-medium: #90caf9;/*浅蓝色*/
            --primary-dark: #03337d;/*深黑蓝色*/
            --primary-color: #fff8f8;/*白色*/
            --accent-color: #c0392b;/*红色 #0277bd;蓝色*/
            --orange-light: #ffcc00;
            --orange-medium: #ff9800;
            --text-dark: #333;
            --gray-light: #f5f5f5;
            --gray-medium: #e0e0e0;
            --black-color: #000000;

        }
 /*#1565c0;*/
        body {
            font-family: 'Microsoft YaHei', Arial, sans-serif;
            color: #333;
            /*background: linear-gradient(to bottom, var(--primary-light), white);*/
        }

        /* 全屏导航样式 */
        .fullscreen-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            z-index: 1000;
            padding: 10px 0;
            transition: all 0.3s ease;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .logo-area h1 {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--primary-dark);
            margin: 0;
        }
        .logo-area h1 span {
            color: var(--orange-medium);
        }
        .logo-area p {
            font-size: 0.9rem;
            color: #666;
            margin: 0;
        }
                
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--primary-dark);
            margin: 0;
        }
        .navbar-brand span {
            color: var(--orange-medium);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 30px;
        }

        .nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0;
        }

            .nav-links > li {
                position: relative;
            }

                .nav-links > li > a {
                    display: block;
                    padding: 15px 15px;
                    color: var(--primary-dark);
                    text-decoration: none;
                    font-weight: 500;
                    /*border-right: 1px solid rgba(0, 0, 0, 0.1);*/
                    transition: all 0.3s;
                }

                .nav-links > li:last-child > a {
                    border-right: none;
                }

                .nav-links > li > a:hover {
                    /*font-size: larger;*/
                    font-weight: 600;
                    /*background-color: rgba(21, 101, 192, 0.1);*/
                    color: var(--primary-dark);
                }

        .lang-switch {
            display: flex;
            gap: 5px;
        }

        .lang-btn {
            background: transparent;
            border: 1px solid var(--primary-dark);
            color: var(--primary-dark);
            padding: 5px 10px;
            border-radius: 4px;
            font-size: 0.9rem;
            transition: all 0.3s;
        }

            .lang-btn.active, .lang-btn:hover {
                /*background: var(--primary-dark);*/
                /*color: white;*/
            }

        /* 下拉菜单样式 - 修复后的关键部分 */
        .dropdown-menu {    
            bs-dropdown-padding-y: 0px;
            position: absolute;
            top: 100%;
            left: 0;
            background: rgba(255, 255, 255, 0.98);
            min-width: 200px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            border-radius: 0 0 5px 5px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s;
            z-index: 1001;
            display: block !important; 
            /* 确保始终显示 */
        }

        .nav-links > li:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown-item {
            display: block;
            padding: 10px 20px;
            color: #333;
            text-decoration: none;
            border-bottom: 1px solid #f0f0f0;
            transition: all 0.3s;
        }

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

            .dropdown-item:hover {
                background-color: var(--primary-light);
                color: var(--primary-dark);
                padding-left: 25px;
            }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary-dark);
            cursor: pointer;
        }

        /* 内容区域，为导航留出空间 */
        .content {
            margin-top: 76px;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .mobile-menu-btn {
                display: block;
            }

            .nav-menu {
                position: fixed;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-10px);
                transition: all 0.3s;
                max-height: 80vh;
                overflow-y: auto;
            }

                .nav-menu.active {
                    opacity: 1;
                    visibility: visible;
                    transform: translateY(0);
                }

            .nav-links {
                flex-direction: column;
                width: 100%;
            }

                .nav-links > li > a {
                    border-right: none;
                    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
                    display: flex;
                    justify-content: space-between;
                    align-items: center;
                    padding: 12px 15px;
                }

                .nav-links > li:last-child > a {
                    border-bottom: none;
                }

            /* 移动端下拉菜单样式 - 优化后的部分 */
            .dropdown-menu {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                background: rgba(0, 0, 0, 0.03);
                margin: 0;
                display: none;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease, padding 0.3s ease;
                padding: 0 15px;
            }

            .nav-links > li.active .dropdown-menu {
                display: block;
                max-height: 300px;
                padding: 10px 15px;
            }

            /* 下拉菜单指示器 */
            .dropdown-toggle {
                position: relative;
            }

                .dropdown-toggle::after {
                    content: '\f107';
                    font-family: 'Font Awesome 5 Free';
                    font-weight: 900;
                    margin-left: 10px;
                    transition: transform 0.3s ease;
                }

            .nav-links > li.active .dropdown-toggle::after {
                transform: rotate(180deg);
            }

            .dropdown-item {
                padding: 8px 15px;
                font-size: 0.9rem;
                border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            }

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

        /* 页面其他部分样式保持不变 */
        /* Banner 轮播样式 */
        .carousel-item {
            height: 500px;
            background-size: cover;
            background-position: center;
        }

        .carousel-caption {
            background: rgba(0,0,0,0.5);
            border-radius: 5px;
            padding: 20px;
        }

        /* 主营产品样式 */
        .product-tabs {
            margin-bottom: 30px;
        }

        .product-tab {
            background: white;
            border: 1px solid #ddd;
            padding: 10px 20px;
            margin: 0 5px;
            border-radius: 5px 5px 0 0;
            cursor: pointer;
            transition: all 0.3s;
        }

            .product-tab.active {
                background: var(--primary-dark);
                color: white;
                border-color: var(--primary-dark);
            }

        .product-card {
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 30px;
            transition: all 0.3s;
            background: white;
        }

            .product-card:hover {
                transform: translateY(-5px);
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            }

        .product-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            transition: all 0.5s;
        }

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

        .product-info {
            padding: 15px;
        }

        /* 企业优势样式 */
        .advantage-item {
            text-align: center;
            padding: 20px;
            transition: all 0.3s;
        }

            .advantage-item:hover {
                transform: translateY(-5px);
            }

        .advantage-icon {
            width: 80px;
            height: 80px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px;
            font-size: 2rem;
            color: var(--primary-dark);
        }

        /* 主要工艺样式 */
        .process-item {
            position: relative;
            overflow: hidden;
            border-radius: 8px;
            margin-bottom: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }

        .process-img {
            height: 250px;
            background-size: cover;
            background-position: center;
            transition: all 0.5s;
        }

        .process-item:hover .process-img {
            transform: scale(1.1);
        }

        .process-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0,0,0,0.7);
            color: white;
            padding: 15px;
            transform: translateY(100%);
            transition: all 0.3s;
        }

        .process-item:hover .process-overlay {
            transform: translateY(0);
        }

        /* 生产设备轮播样式 */
        .equipment-carousel {
            padding: 20px 0;
        }

        .equipment-item {
            text-align: center;
            padding: 0 25px;
        }

        .equipment-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            border-radius: 8px;
            margin: 0 15px;
            margin-bottom: 15px;
        }

        /* 主要行业手风琴样式 */
        .industry-accordion {
            display: flex;
            height: 400px;
            gap: 10px;
        }

        .industry-item {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            position: relative;
            cursor: pointer;
            transition: all 0.5s ease;
        }

            .industry-item:hover {
                flex: 3;
            }

        .industry-img {
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            transition: all 0.5s;
        }

        .industry-content {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0,0,0,0.7);
            color: white;
            padding: 20px;
            transform: translateY(100%);
            transition: all 0.3s;
        }

        .industry-item:hover .industry-content {
            transform: translateY(0);
        }

        /* 底部样式 */
        footer {
            background: linear-gradient(to right, var(--primary-dark), #0d47a1);
            color: white;
            padding: 5px 0 20px;
        }

        .footer-links h5 {
            border-bottom: 1px solid rgba(255,255,255,0.2);
            padding-bottom: 10px;
            margin-bottom: 15px;
        }

        .footer-links a {
            color: #e0e0e0;
            text-decoration: none;
            display: block;
            margin-bottom: 8px;
            transition: all 0.3s;
        }

            .footer-links a:hover {
                color: white;
                padding-left: 5px;
            }

        .qrcode-area {
            text-align: center;
        }

        .qrcode {
            width: 120px;
            margin-bottom: 15px;
            background: white;
            padding: 10px;
            border-radius: 5px;
        }

        .copyright {
            border-top: 1px solid rgba(255,255,255,0.2);
            padding-top: 20px;
            margin-top: 30px;
            text-align: center;
            font-size: 0.9rem;
            color: #e0e0e0;
        }

        @media (max-width: 768px) {
            .industry-accordion {
                flex-direction: column;
                height: auto;
            }

            .industry-item {
                height: 100px;
            }

                .industry-item:hover {
                    height: 200px;
                }
        }





        /* 生产设备样式 */
        .equipment-section {
            background-color: #f8f9fa;
            padding: 60px 0;
        }
        
        .equipment-slider {
            position: relative;
            overflow: hidden;
        }
        
        .equipment-container {
            display: flex;
            transition: transform 0.5s ease;
        }
        
        .equipment-item {
            min-width: 25%;
            padding: 0 15px;
        }
        
        .equipment-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            border-radius: 5px;
            margin-bottom: 15px;
        }
        
        .slider-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background-color:#03337d;
            color: white;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            z-index: 10;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .slider-btn.prev {
            left: 10px;
        }
        
        .slider-btn.next {
            right: 10px;
        }