:root {
            --primary-color: #0066cc;
            --secondary-color: #003366;
            --accent-color: #00cc99;
            --light-bg: #f8f9fa;
            --dark-text: #333333;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.8;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .nav-link {
            font-weight: 500;
            margin: 0 0.5rem;
            color: var(--secondary-color);
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--primary-color);
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
            color: white;
            padding: 8rem 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            animation: fadeInUp 1s ease;
        }
        .hero-section p {
            font-size: 1.3rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            animation: fadeInUp 1.2s ease;
        }
        .btn-primary {
            background-color: var(--accent-color);
            border: none;
            padding: 0.8rem 2.5rem;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #00b386;
            transform: scale(1.05);
            box-shadow: 0 8px 20px rgba(0, 204, 153, 0.3);
        }
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
            color: var(--secondary-color);
            font-weight: 700;
            font-size: 2.5rem;
            position: relative;
            padding-bottom: 1rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
        }
        .card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        }
        .card-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
        }
        .service-card, .product-card {
            padding: 2.5rem;
            text-align: center;
        }
        .about-img {
            border-radius: 20px;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }
        .testimonial-slider {
            background-color: var(--light-bg);
            padding: 5rem 0;
        }
        .testimonial-item {
            padding: 2rem;
            background: white;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
            margin: 1rem;
        }
        .client-logo {
            max-height: 60px;
            filter: grayscale(100%);
            opacity: 0.7;
            transition: var(--transition);
        }
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .footer {
            background-color: var(--secondary-color);
            color: white;
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: #cccccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        .friendlink {
            background-color: #f1f5f9;
            padding: 3rem 0;
        }
        .flink {
            display: inline-block;
            margin: 0.5rem 1rem;
            padding: 0.5rem 1.5rem;
            background: white;
            border-radius: 30px;
            color: var(--secondary-color);
            font-weight: 500;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            text-decoration: none;
        }
        .contact-info i {
            color: var(--accent-color);
            margin-right: 10px;
            font-size: 1.2rem;
        }
        .news-card {
            border-left: 5px solid var(--accent-color);
            padding-left: 1.5rem;
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        @media (max-width: 768px) {
            .hero-section h1 { font-size: 2.5rem; }
            .section-title { font-size: 2rem; }
            .navbar-nav { text-align: center; }
        }