:root {
            --primary-color: #1a5fb4;
            --secondary-color: #2d2d2d;
            --accent-color: #ff6b35;
            --light-bg: #f8f9fa;
            --text-dark: #333333;
            --text-light: #666666;
            --border-radius: 8px;
            --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--text-dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--secondary-color);
        }
        .section-header {
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-header h2 {
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
            margin-bottom: 20px;
        }
        .section-header h2:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 70px;
            height: 4px;
            background-color: var(--accent-color);
            border-radius: 2px;
        }
        .section-header p {
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 25px;
            border-radius: var(--border-radius);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #0d4a9c;
            border-color: #0d4a9c;
            transform: translateY(-3px);
            box-shadow: var(--box-shadow);
        }
        .btn-outline-primary {
            color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 25px;
            border-radius: var(--border-radius);
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-outline-primary:hover {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            transform: translateY(-3px);
            box-shadow: var(--box-shadow);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 15px 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--accent-color);
        }
        .nav-link {
            font-weight: 600;
            margin: 0 8px;
            color: var(--secondary-color);
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color);
        }
        .hero-section {
            background: linear-gradient(rgba(26, 95, 180, 0.85), rgba(45, 45, 45, 0.9)), url('https://images.unsplash.com/photo-1516321318423-f06f85e504b3?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 150px 0 100px;
            text-align: center;
        }
        .hero-section h1 {
            color: white;
            font-size: 3.2rem;
            margin-bottom: 25px;
            font-weight: 800;
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 35px;
            opacity: 0.9;
        }
        .service-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 30px;
            height: 100%;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            border: 1px solid #eee;
        }
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background-color: rgba(26, 95, 180, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
        }
        .service-icon i {
            font-size: 30px;
            color: var(--primary-color);
        }
        .stats-section {
            background-color: var(--primary-color);
            color: white;
            padding: 80px 0;
        }
        .stat-item {
            text-align: center;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .stat-label {
            font-size: 1.1rem;
            opacity: 0.9;
        }
        .portfolio-item {
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            margin-bottom: 30px;
            transition: var(--transition);
        }
        .portfolio-item:hover {
            transform: translateY(-10px);
        }
        .portfolio-img {
            height: 250px;
            overflow: hidden;
        }
        .portfolio-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .portfolio-item:hover .portfolio-img img {
            transform: scale(1.05);
        }
        .portfolio-content {
            padding: 20px;
            background-color: white;
        }
        .portfolio-content h4 {
            margin-bottom: 10px;
        }
        .team-card {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            margin-bottom: 30px;
        }
        .team-card:hover {
            transform: translateY(-10px);
        }
        .team-img {
            height: 280px;
            overflow: hidden;
        }
        .team-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .team-card:hover .team-img img {
            transform: scale(1.05);
        }
        .team-info {
            padding: 25px;
            text-align: center;
        }
        .team-info h5 {
            margin-bottom: 5px;
        }
        .team-info p {
            color: var(--text-light);
            margin-bottom: 15px;
        }
        .testimonial-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 30px;
            box-shadow: var(--box-shadow);
            margin-bottom: 30px;
            height: 100%;
        }
        .testimonial-text {
            font-style: italic;
            margin-bottom: 25px;
            color: var(--text-dark);
        }
        .testimonial-author {
            display: flex;
            align-items: center;
        }
        .author-img {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            overflow: hidden;
            margin-right: 15px;
        }
        .author-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .author-info h6 {
            margin-bottom: 5px;
        }
        .author-info p {
            color: var(--text-light);
            font-size: 0.9rem;
            margin: 0;
        }
        .blog-card {
            background: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            transition: var(--transition);
            margin-bottom: 30px;
            height: 100%;
        }
        .blog-card:hover {
            transform: translateY(-10px);
        }
        .blog-img {
            height: 220px;
            overflow: hidden;
        }
        .blog-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .blog-card:hover .blog-img img {
            transform: scale(1.05);
        }
        .blog-content {
            padding: 25px;
        }
        .blog-content h4 {
            margin-bottom: 15px;
            line-height: 1.4;
        }
        .blog-content p {
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .blog-meta {
            display: flex;
            justify-content: space-between;
            color: var(--text-light);
            font-size: 0.9rem;
            border-top: 1px solid #eee;
            padding-top: 15px;
        }
        .contact-section {
            background-color: var(--light-bg);
            padding: 100px 0;
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 30px;
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background-color: rgba(26, 95, 180, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 20px;
            flex-shrink: 0;
        }
        .contact-icon i {
            font-size: 24px;
            color: var(--primary-color);
        }
        .contact-info-content h5 {
            margin-bottom: 10px;
        }
        .contact-form {
            background: white;
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
        }
        .form-control {
            padding: 12px 15px;
            border-radius: var(--border-radius);
            border: 1px solid #ddd;
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(26, 95, 180, 0.25);
        }
        .flink {
            display: inline-block;
            padding: 8px 20px;
            background-color: white;
            border-radius: 30px;
            color: var(--text-dark);
            font-weight: 600;
            margin: 5px 10px;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
            border: 1px solid #eee;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .footer {
            background-color: var(--secondary-color);
            color: white;
            padding: 80px 0 30px;
        }
        .footer h5 {
            color: white;
            margin-bottom: 25px;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 50px;
            padding-top: 30px;
            text-align: center;
            color: #bbb;
            font-size: 0.9rem;
        }
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: white;
            transition: var(--transition);
        }
        .social-links a:hover {
            background-color: var(--primary-color);
            transform: translateY(-3px);
        }
        @media (max-width: 991px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section {
                padding: 120px 0 80px;
            }
            .navbar-collapse {
                background-color: white;
                padding: 20px;
                border-radius: var(--border-radius);
                box-shadow: var(--box-shadow);
                margin-top: 15px;
            }
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-section p {
                font-size: 1rem;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }