:root {
            --primary-color: #0056b3;
            --secondary-color: #28a745;
            --accent-color: #ffc107;
            --dark-color: #343a40;
            --light-color: #f8f9fa;
            --font-family-sans: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        body {
            font-family: var(--font-family-sans);
            line-height: 1.8;
            color: #333;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--dark-color);
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        a:hover {
            color: var(--secondary-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            padding: 1rem 0;
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            padding: 0.5rem 1.2rem;
        }
        .navbar-nav .nav-link:hover {
            color: var(--secondary-color);
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(0, 86, 179, 0.85) 0%, rgba(40, 167, 69, 0.8) 100%), url('https://images.unsplash.com/photo-1556742049-0cfed4f6a45d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1950&q=80') no-repeat center center/cover;
            color: white;
            padding: 8rem 0;
            text-align: center;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            color: white;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            margin: 1rem auto;
            border-radius: 2px;
        }
        .card {
            border: none;
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            margin-bottom: 1.5rem;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .card-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .service-card, .product-card {
            padding: 2rem;
            text-align: center;
        }
        .img-fluid {
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease;
        }
        .img-fluid:hover {
            transform: scale(1.03);
        }
        .contact-info {
            list-style: none;
            padding-left: 0;
        }
        .contact-info li {
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }
        .contact-info i {
            width: 30px;
            color: var(--secondary-color);
        }
        .footer {
            background-color: var(--dark-color);
            color: var(--light-color);
            padding: 3rem 0 1.5rem;
        }
        .footer a {
            color: #ccc;
        }
        .footer a:hover {
            color: white;
        }
        .friendlink {
            background-color: #f8f9fa;
            padding: 3rem 0;
        }
        .flink {
            display: inline-block;
            margin: 0.5rem 1rem;
            padding: 0.5rem 1.5rem;
            background: white;
            border-radius: 50px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
            color: #555;
            font-weight: 500;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .news-item {
            border-left: 4px solid var(--primary-color);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
        }
        .btn-custom {
            background: var(--primary-color);
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            transition: all 0.3s ease;
        }
        .btn-custom:hover {
            background: var(--secondary-color);
            color: white;
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .navbar-nav {
                text-align: center;
            }
        }