:root {
            --primary-color: #1a3a6c;
            --secondary-color: #c9a96e;
            --accent-color: #2c5282;
            --light-bg: #f8f9fa;
            --dark-text: #333333;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-text);
            line-height: 1.6;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            padding: 15px 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            color: var(--primary-color) !important;
            font-weight: 600;
            margin: 0 8px;
            position: relative;
            padding: 8px 0 !important;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary-color) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            bottom: 0;
            left: 0;
            transition: var(--transition);
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }
        .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');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 160px 0 120px;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 25px;
            line-height: 1.2;
        }
        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 35px;
            opacity: 0.9;
        }
        .btn-primary-custom {
            background-color: var(--secondary-color);
            border: none;
            padding: 14px 32px;
            font-weight: 600;
            border-radius: 4px;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background-color: #b89a5d;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
        }
        .btn-outline-custom {
            background-color: transparent;
            border: 2px solid white;
            color: white;
            padding: 12px 30px;
            font-weight: 600;
            border-radius: 4px;
            transition: var(--transition);
        }
        .btn-outline-custom:hover {
            background-color: white;
            color: var(--primary-color);
            transform: translateY(-3px);
        }
        .service-card, .project-card, .team-card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .service-card:hover, .project-card:hover, .team-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .card-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .card-icon i {
            font-size: 30px;
            color: white;
        }
        .stats-section {
            background-color: var(--light-bg);
            padding: 80px 0;
        }
        .stat-item {
            text-align: center;
            padding: 20px;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        .stat-label {
            color: #666;
            font-size: 1.1rem;
            margin-top: 10px;
        }
        .footer {
            background-color: var(--primary-color);
            color: #ddd;
            padding: 70px 0 20px;
        }
        .footer-heading {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-heading::after {
            content: '';
            position: absolute;
            width: 50px;
            height: 3px;
            background-color: var(--secondary-color);
            bottom: 0;
            left: 0;
        }
        .footer-links a {
            color: #ccc;
            display: block;
            margin-bottom: 10px;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        .contact-info li {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
        }
        .contact-info i {
            color: var(--secondary-color);
            margin-right: 12px;
            margin-top: 5px;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            margin-top: 50px;
            text-align: center;
            font-size: 0.9rem;
            color: #aaa;
        }
        .friendlink-section {
            background-color: var(--light-bg);
            padding: 60px 0;
        }
        .flink {
            display: inline-block;
            background: white;
            color: var(--primary-color);
            padding: 12px 25px;
            margin: 8px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid #eaeaea;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.03);
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            border-color: var(--primary-color);
            text-decoration: none;
        }
        @media (max-width: 992px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .navbar-collapse {
                background-color: white;
                padding: 20px;
                border-radius: 10px;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
                margin-top: 15px;
            }
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.3rem;
            }
            .hero-section {
                padding: 130px 0 80px;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-in {
            animation: fadeInUp 0.8s ease forwards;
        }
        .nav-tabs .nav-link {
            color: #666;
            border: none;
            border-bottom: 3px solid transparent;
            padding: 12px 25px;
            font-weight: 600;
        }
        .nav-tabs .nav-link.active {
            color: var(--primary-color);
            background-color: transparent;
            border-bottom: 3px solid var(--secondary-color);
        }
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 3px;
            background-color: var(--secondary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 30px;
            padding-left: 30px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background-color: var(--secondary-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--secondary-color);
        }
        .img-hover-zoom {
            overflow: hidden;
            border-radius: 8px;
        }
        .img-hover-zoom img {
            transition: transform 0.5s ease;
        }
        .img-hover-zoom:hover img {
            transform: scale(1.05);
        }
        .form-control-custom {
            border: 1px solid #ddd;
            border-radius: 6px;
            padding: 12px 15px;
            transition: var(--transition);
        }
        .form-control-custom:focus {
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 0.25rem rgba(201, 169, 110, 0.25);
        }