:root {
            --primary-color: #1a365d;
            --secondary-color: #d4af37;
            --accent-color: #2d3748;
            --light-color: #f8f9fa;
            --dark-color: #212529;
        }
        body {
            font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
            color: var(--dark-color);
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--secondary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.9)), url('https://images.unsplash.com/photo-1545324418-cc1a3fa10c00?ixlib=rb-4.0.3&auto=format&fit=crop&w=1950&q=80') center/cover no-repeat;
            color: white;
            padding: 120px 0;
        }
        .section-title {
            color: var(--primary-color);
            border-left: 5px solid var(--secondary-color);
            padding-left: 15px;
            margin-bottom: 2rem;
        }
        .card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .service-icon {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-bottom: 1rem;
        }
        .project-img {
            height: 250px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .project-card:hover .project-img {
            transform: scale(1.05);
        }
        .btn-custom {
            background-color: var(--secondary-color);
            color: var(--primary-color);
            border: none;
            padding: 10px 25px;
            font-weight: 600;
            border-radius: 5px;
            transition: all 0.3s ease;
        }
        .btn-custom:hover {
            background-color: #b8941f;
            color: white;
        }
        footer {
            background-color: var(--primary-color);
            color: white;
        }
        .friendlink {
            background-color: var(--light-color);
            padding: 2rem;
            border-radius: 10px;
        }
        .flink {
            display: inline-block;
            margin: 0.5rem;
            padding: 0.5rem 1rem;
            background-color: white;
            border: 1px solid #dee2e6;
            border-radius: 5px;
            color: var(--primary-color);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        .contact-info a {
            color: var(--secondary-color);
            text-decoration: none;
        }
        .contact-info a:hover {
            text-decoration: underline;
        }
        .stats-number {
            font-size: 3rem;
            font-weight: bold;
            color: var(--secondary-color);
        }
        .news-card {
            border-left: 4px solid var(--secondary-color);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 80px 0;
            }
            .stats-number {
                font-size: 2rem;
            }
        }