:root {
            --primary-color: #1a4b8c;
            --secondary-color: #f0a500;
            --accent-color: #2c6e49;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --gray-color: #6c757d;
            --transition: all 0.3s ease;
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            color: #333;
            line-height: 1.6;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 150px 0 100px;
            position: relative;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
            font-weight: 700;
            color: var(--primary-color);
        }
        .section-title:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 4px;
            background: var(--secondary-color);
        }
        .section-title.text-center:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .service-card {
            border-radius: 10px;
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            border: 1px solid #eee;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            border-color: var(--secondary-color);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin: 0 auto 20px;
            transition: var(--transition);
        }
        .service-card:hover .service-icon {
            background: var(--secondary-color);
            transform: rotateY(180deg);
        }
        .stats-section {
            background: linear-gradient(135deg, var(--primary-color) 0%, #0d2c5e 100%);
            color: white;
            padding: 80px 0;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 700;
            color: var(--secondary-color);
            line-height: 1;
        }
        .project-card {
            position: relative;
            overflow: hidden;
            border-radius: 10px;
            margin-bottom: 30px;
        }
        .project-card img {
            transition: var(--transition);
            width: 100%;
            height: 280px;
            object-fit: cover;
        }
        .project-card:hover img {
            transform: scale(1.05);
        }
        .project-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 20px;
            transform: translateY(100%);
            transition: var(--transition);
        }
        .project-card:hover .project-overlay {
            transform: translateY(0);
        }
        .news-card {
            border-left: 4px solid var(--primary-color);
            transition: var(--transition);
            height: 100%;
        }
        .news-card:hover {
            border-left-color: var(--secondary-color);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            margin: 5px 10px;
            background: #f8f9fa;
            border-radius: 30px;
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            border-color: var(--primary-color);
        }
        .contact-info-box {
            background: #f8f9fa;
            padding: 30px;
            border-radius: 10px;
            height: 100%;
            border-left: 4px solid var(--secondary-color);
        }
        .contact-icon {
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }
        footer {
            background: #1d2b3a;
            color: #b0b7c3;
        }
        .footer-links a {
            color: #b0b7c3;
            text-decoration: none;
            transition: var(--transition);
            display: block;
            margin-bottom: 8px;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color) !important;
            font-size: 1.8rem;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 500;
            margin: 0 5px;
            position: relative;
        }
        .nav-link:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            transition: var(--transition);
        }
        .nav-link:hover:after, .nav-link.active:after {
            width: 100%;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 25px;
            font-weight: 500;
        }
        .btn-primary:hover {
            background-color: #0d2c5e;
            border-color: #0d2c5e;
            transform: translateY(-2px);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            color: #333;
            padding: 10px 25px;
            font-weight: 500;
        }
        .btn-secondary:hover {
            background-color: #d18f00;
            border-color: #d18f00;
            color: #333;
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0 60px;
            }
            .section-title {
                font-size: 1.8rem;
                margin-bottom: 30px;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }