:root {
            --primary-color: #0056b3;
            --secondary-color: #28a745;
            --accent-color: #ff6b35;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --text-color: #333;
            --border-radius: 8px;
            --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Noto Sans SC', sans-serif;
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--dark-color);
        }
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
        }
        .section-header h2 {
            display: inline-block;
            font-size: 2.5rem;
            position: relative;
            padding-bottom: 1rem;
        }
        .section-header h2:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary-color);
            border-radius: 2px;
        }
        .section-header p {
            font-size: 1.1rem;
            color: #666;
            max-width: 700px;
            margin: 0 auto;
        }
        .container {
            max-width: 1200px;
        }
        .navbar {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--accent-color);
        }
        .nav-link {
            font-weight: 500;
            margin: 0 0.5rem;
            color: var(--dark-color);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color);
        }
        .nav-link:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            transition: var(--transition);
        }
        .nav-link:hover:after, .nav-link.active:after {
            width: 100%;
        }
        .hero {
            background: linear-gradient(rgba(0, 86, 179, 0.85), rgba(0, 86, 179, 0.9)), url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 8rem 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            color: white;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        .btn-primary {
            background: var(--primary-color);
            border: none;
            padding: 0.8rem 2.5rem;
            border-radius: var(--border-radius);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background: #004494;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        .card {
            border: none;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .card-img-top {
            height: 200px;
            object-fit: cover;
        }
        .card-body {
            padding: 1.5rem;
        }
        .service-icon {
            width: 80px;
            height: 80px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 2rem;
        }
        .product-card {
            position: relative;
            overflow: hidden;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
        }
        .product-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0, 86, 179, 0.9);
            color: white;
            padding: 1.5rem;
            transform: translateY(100%);
            transition: var(--transition);
        }
        .product-card:hover .product-overlay {
            transform: translateY(0);
        }
        .stats-section {
            background: linear-gradient(rgba(0, 86, 179, 0.9), rgba(0, 86, 179, 0.95)), url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 5rem 0;
        }
        .stat-item {
            text-align: center;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }
        .stat-text {
            font-size: 1.2rem;
            opacity: 0.9;
        }
        .about-content {
            padding-right: 2rem;
        }
        .about-img {
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
        }
        .friendlink {
            background: var(--light-color);
            padding: 4rem 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 1rem 2rem;
            margin: 0.5rem;
            border-radius: var(--border-radius);
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-5px);
        }
        footer {
            background: var(--dark-color);
            color: white;
            padding: 4rem 0 1.5rem;
        }
        .footer-links h5 {
            color: white;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.8rem;
        }
        .footer-links h5:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--accent-color);
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            border-top: 1px solid #444;
            padding-top: 1.5rem;
            margin-top: 3rem;
            text-align: center;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.8rem;
            }
            .section-header h2 {
                font-size: 2.2rem;
            }
            .about-content {
                padding-right: 0;
                margin-bottom: 2rem;
            }
        }
        @media (max-width: 768px) {
            .hero {
                padding: 5rem 0;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }
        @media (max-width: 576px) {
            .navbar-brand {
                font-size: 1.5rem;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .btn-primary {
                padding: 0.7rem 1.8rem;
            }
        }