:root {
            --primary-blue: #003366;
            --secondary-gray: #666666;
            --accent-red: #C00000;
            --dark-text: #000000;
            --light-bg: #f5f5f5;
            --white: #ffffff;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Helvetica', 'Arial', '思源黑体', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            color: var(--dark-text);
            line-height: 1.6;
            overflow-x: hidden;
            background-color: var(--white);
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 导航样式 */
        nav {
            background-color: var(--primary-blue);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.2);
        }
        
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--white);
            text-transform: uppercase;
        }
		.logo img{ height: 80px;}
        
        .nav-content {
            display: flex;
            align-items: center;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
            margin-right: 30px;
        }
        
        .nav-links li {
            margin-left: 25px;
            position: relative;
        }
        
        .nav-links a {
            text-decoration: none;
            color: var(--white);
            font-weight: 500;
            transition: color 0.3s;
            font-size: 1rem;
            letter-spacing: 0.5px;
            display: block;
            padding: 5px 0;
			text-align: center;
        }
        
        .nav-links a:hover {
            color: var(--accent-red);
        }
        
        .nav-links .en {
            font-size: 0.8rem;
            opacity: 0.8;
            margin-top: 2px;
			color: #fff;
			text-align: center;
        }
        
        .language-switcher {
            display: flex;
            align-items: center;
            border-left: 1px solid rgba(255,255,255,0.2);
            padding-left: 20px;
        }
        
        .language-btn {
            background: none;
            border: none;
            color: var(--white);
            cursor: pointer;
            padding: 5px 10px;
            border-radius: 3px;
            transition: background-color 0.3s;
            display: flex;
            align-items: center;
        }
        
        .language-btn:hover {
            background-color: rgba(255,255,255,0.1);
        }
        
        .language-btn.active {
            background-color: var(--accent-red);
        }
        
        .language-btn i {
            margin-right: 5px;
        }
        
        /* 封面样式 */
        .cover {
            height: 100vh;
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('../images/something.jpg');
            background-size: cover;
            background-position: center;
            color: var(--white);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            padding: 0 20px;
        }
        
        .cover h1 {
            font-size: 3.5rem;
            margin-bottom: 10px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        
        .cover h2 {
            font-size: 1.8rem;
            font-weight: 400;
            margin-bottom: 30px;
            text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .slogan-container {
            margin: 30px 0;
        }
        
        .slogan {
            font-size: 1.5rem;
            margin: 15px 0;
            color: var(--white);
            position: relative;
            display: inline-block;
            padding: 0 20px;
        }
        
        .slogan:before, .slogan:after {
            content: '';
            position: absolute;
            top: 50%;
            width: 40px;
            height: 2px;
            background-color: var(--accent-red);
        }
        
        .slogan:before {
            left: -45px;
        }
        
        .slogan:after {
            right: -45px;
        }
        
        .scroll-down {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            color: var(--white);
            font-size: 2rem;
            animation: bounce 2s infinite;
        }
        
        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0) translateX(-50%);
            }
            40% {
                transform: translateY(-20px) translateX(-50%);
            }
            60% {
                transform: translateY(-10px) translateX(-50%);
            }
        }
        
        /* 内容区块通用样式 */
        .section {
            padding: 100px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
            color: var(--primary-blue);
            position: relative;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            text-transform: uppercase;
            font-weight: 700;
            letter-spacing: 1px;
        }
        
        .section-title p {
            color: var(--secondary-gray);
            font-size: 1.2rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .section-title:after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background-color: var(--accent-red);
            margin: 15px auto;
        }
        
        /* 双语内容区块 */
        .bilingual-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        
        .bilingual-text {
            padding: 20px;
        }
        
        .bilingual-text h3 {
            color: var(--primary-blue);
            margin-bottom: 15px;
            font-size: 1.5rem;
            text-transform: uppercase;
        }
        
        .bilingual-text p {
            margin-bottom: 20px;
            line-height: 1.8;
        }
        
        .highlight {
            background-color: rgba(192, 0, 0, 0.1);
            border-left: 4px solid var(--accent-red);
            padding: 20px;
            margin: 30px 0;
            font-style: italic;
        }
        
        .bilingual-image {
            border-radius: 5px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            height: 100%;
            display: flex;
            align-items: center;
        }
        
        .bilingual-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        
        /* 交替布局 */
        .alternate:nth-child(even) .bilingual-section {
            direction: rtl;
        }
        
        .alternate:nth-child(even) .bilingual-text {
            direction: ltr;
        }
        
        /* 核心业务样式 */
        .core-business {
            background-color: var(--light-bg);
        }
        
        .business-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .business-card {
            background: var(--white);
            border-radius: 5px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-top: 4px solid var(--primary-blue);
        }
        
        .business-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        
        .business-card-header {
            background-color: var(--primary-blue);
            color: var(--white);
            padding: 20px;
            text-align: center;
        }
        
        .business-card-header h3 {
            font-size: 1.3rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .business-card-body {
            padding: 20px;
        }
        
        .business-card-body ul {
            list-style: none;
        }
        
        .business-card-body li {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
            display: flex;
            align-items: center;
            font-size: 0.95rem;
        }
        
        .business-card-body li:before {
            content: '•';
            color: var(--accent-red);
            font-weight: bold;
            display: inline-block;
            width: 1em;
            margin-right: 10px;
        }
        
        /* 全球发展样式 */
        .global-map {
            position: relative;
            margin: 40px auto;
            max-width: 100%;
        }
        
        .world-map {
            width: 100%;
            height: auto;
            opacity: 0.9;
        }
        
        .map-marker {
            position: absolute;
            width: 20px;
            height: 20px;
            background-color: var(--accent-red);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            box-shadow: 0 0 0 0 rgba(192, 0, 0, 0.7);
            animation: pulse 2s infinite;
        }
        
        .map-marker:after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background-color: rgba(192, 0, 0, 0.3);
        }
        
        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(192, 0, 0, 0.7);
            }
            70% {
                box-shadow: 0 0 0 15px rgba(192, 0, 0, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(192, 0, 0, 0);
            }
        }
        
        .marker-1 { top: 35%; left: 60%; }
        .marker-2 { top: 32%; left: 52%; }
        .marker-3 { top: 50%; left: 27%; }
        
        .region-info {
            margin-top: 40px;
            text-align: center;
            font-size: 1.1rem;
        }
        
        .region-info p {
            margin-bottom: 15px;
        }
        
        /* 项目案例样式 */
        .projects {
            background-color: var(--light-bg);
        }
        
        .project-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .project-card {
            background: var(--white);
            border-radius: 5px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s;
        }
        
        .project-card:hover {
            transform: translateY(-5px);
        }
        
        .project-image {
            height: 200px;
            overflow: hidden;
        }
        
        .project-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .project-card:hover .project-image img {
            transform: scale(1.05);
        }
        
        .project-info {
            padding: 20px;
        }
        
        .project-info h3 {
            color: var(--primary-blue);
            margin-bottom: 10px;
            font-size: 1.2rem;
            text-transform: uppercase;
        }
        
        /* 为什么选择我们样式 */
        .why-us-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        
        .why-us-card {
            text-align: center;
            padding: 30px 20px;
            background: var(--white);
            border-radius: 5px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s;
            border-top: 3px solid var(--primary-blue);
        }
        
        .why-us-card:hover {
            transform: translateY(-5px);
        }
        
        .why-us-icon {
            font-size: 2.5rem;
            color: var(--primary-blue);
            margin-bottom: 20px;
        }
        
        .why-us-card h3 {
            margin-bottom: 15px;
            color: var(--primary-blue);
            text-transform: uppercase;
            font-size: 1.2rem;
        }
        
        /* 联系方式样式 */
        .contact {
            background: linear-gradient(rgba(0,0,0,0.8), rgba(0,0,0,0.8)), url('../images/foot.webp');
            background-size: cover;
            background-position: center;
            color: var(--white);
            text-align: center;
        }
        
        .contact .section-title {
            color: var(--white);
        }
        
        .contact .section-title:after {
            background-color: var(--accent-red);
            color: var(--white);
        }
        
        .contact-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            text-align: left;
        }
        
        .contact-info {
            padding-right: 20px;
        }
        
        .contact-info h3 {
            margin-bottom: 20px;
            font-size: 1.8rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .contact-details {
            margin-top: 30px;
        }
        
        .contact-details p {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            font-size: 1.1rem;
        }
        
        .contact-details i {
            margin-right: 15px;
            width: 20px;
            color: var(--accent-red);
        }
        
        .qr-code {
            margin-top: 30px;
            text-align: center;
        }
        
        .qr-code img {
            max-width: 150px;
            border: 5px solid var(--white);
        }
        
        .contact-form {
            background: var(--white);
            padding: 30px;
            border-radius: 5px;
            color: var(--dark-text);
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--primary-blue);
        }
        
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
            background-color: var(--light-bg);
        }
        
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        
        .submit-btn {
            background-color: var(--accent-red);
            color: var(--white);
            border: none;
            padding: 12px 30px;
            border-radius: 5px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: background-color 0.3s;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .submit-btn:hover {
            background-color: #a00000;
        }
        
        /* 页脚样式 */
        footer {
            background-color: var(--primary-blue);
            color: var(--white);
            padding: 40px 0 20px;
            text-align: center;
        }
        
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }
        
        .footer-section {
            flex: 1;
            min-width: 250px;
            margin-bottom: 30px;
        }
        
        .footer-section h3 {
            margin-bottom: 20px;
            color: var(--accent-red);
            text-transform: uppercase;
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .bilingual-section,
            .contact-wrapper {
                grid-template-columns: 1fr;
            }
            
            .cover h1 {
                font-size: 2.8rem;
            }
            
            .cover h2 {
                font-size: 1.5rem;
            }
            
            .slogan {
                font-size: 1.2rem;
            }
            
            .alternate:nth-child(even) .bilingual-section {
                direction: ltr;
            }
            
            .nav-links .en {
                display: none;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            .language-switcher {
                border-left: none;
                padding-left: 10px;
            }
            
            .section {
                padding: 80px 0;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .business-cards,
            .project-grid,
            .why-us-cards {
                grid-template-columns: 1fr;
            }
            
            .cover h1 {
                font-size: 2.2rem;
            }
            
            .cover h2 {
                font-size: 1.3rem;
            }
            
            .slogan:before, .slogan:after {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
                background: none;
                border: none;
                color: var(--white);
                font-size: 1.5rem;
                cursor: pointer;
                margin-right: 15px;
            }
        }
        
        /* 移动菜单 */
        .mobile-menu-btn {
            display: none;
        }
        
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--primary-blue);
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0,0,0,0.2);
                transform: translateY(-100%);
                opacity: 0;
                transition: transform 0.3s, opacity 0.3s;
                z-index: 999;
            }
            
            .nav-links.active {
                transform: translateY(0);
                opacity: 1;
				display: block;
            }
            
            .nav-links li {
                margin: 15px 0;
            }
            
            .nav-links .en {
                display: block;
                font-size: 0.8rem;
            }
        }