:root {
            --primary-color: #1a3a6c;
            --secondary-color: #c9a227;
            --accent-color: #2c5282;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            color: #333;
            line-height: 1.8;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 58, 108, 0.85), rgba(26, 58, 108, 0.9)), url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 150px 0;
        }
        .service-card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .project-img {
            height: 250px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .project-card:hover .project-img {
            transform: scale(1.05);
        }
        .contact-info i {
            color: var(--secondary-color);
            margin-right: 10px;
        }
        .footer {
            background-color: var(--primary-color);
            color: white;
        }
        .flink {
            color: #ddd;
            text-decoration: none;
            padding: 5px 10px;
            border-radius: 5px;
            transition: background-color 0.3s;
            display: inline-block;
            margin: 5px;
        }
        .flink:hover {
            background-color: rgba(255,255,255,0.1);
            color: white;
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            transition: color 0.3s;
        }
        .navbar-nav .nav-link:hover {
            color: var(--secondary-color);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            font-weight: 600;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: var(--accent-color);
            border-color: var(--accent-color);
            transform: scale(1.05);
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 40px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--secondary-color);
        }
        .news-card {
            border-left: 4px solid var(--secondary-color);
            padding-left: 15px;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0;
            }
            .display-4 {
                font-size: 2.5rem;
            }
        }