:root {
            --primary-color: #0a58ca;
            --secondary-color: #6c757d;
            --accent-color: #20c997;
            --light-bg: #f8f9fa;
            --dark-bg: #212529;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.8;
            color: #333;
            overflow-x: hidden;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            padding-top: 15px;
            padding-bottom: 15px;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--primary-color);
        }
        .navbar-brand span {
            color: var(--accent-color);
        }
        .nav-link {
            font-weight: 500;
            margin: 0 8px;
            color: #444 !important;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-color) !important;
        }
        .nav-link:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            left: 50%;
            bottom: 0;
            transition: var(--transition);
        }
        .nav-link:hover:after, .nav-link.active:after {
            width: 80%;
            left: 10%;
        }
        .hero-section {
            background: linear-gradient(rgba(10, 88, 202, 0.85), rgba(32, 201, 151, 0.8)), url('https://images.unsplash.com/photo-1552664730-d307ca884978?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 160px 0 120px;
            position: relative;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 25px;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.2);
        }
        .hero-section p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 40px;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 35px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #084298;
            border-color: #084298;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(10, 88, 202, 0.3);
        }
        .btn-outline-light {
            padding: 12px 35px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 255, 255, 0.2);
        }
        .section-title {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }
        .section-title h2 {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--dark-bg);
            display: inline-block;
            padding-bottom: 15px;
        }
        .section-title h2:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: var(--accent-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .section-title p {
            color: var(--secondary-color);
            max-width: 700px;
            margin: 20px auto 0;
            font-size: 1.1rem;
        }
        .feature-card {
            background: white;
            border-radius: 15px;
            padding: 40px 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            height: 100%;
            transition: var(--transition);
            border: 1px solid #eee;
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }
        .feature-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: white;
            font-size: 2rem;
        }
        .feature-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--dark-bg);
        }
        .feature-card p {
            color: #666;
            margin-bottom: 25px;
        }
        .stats-section {
            background: linear-gradient(rgba(10, 88, 202, 0.9), rgba(32, 201, 151, 0.9)), url('https://images.unsplash.com/photo-1551288049-bebda4e38f71?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
        }
        .stat-item {
            text-align: center;
            padding: 20px;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .stat-text {
            font-size: 1.2rem;
            font-weight: 500;
            opacity: 0.9;
        }
        .portfolio-item {
            border-radius: 15px;
            overflow: hidden;
            margin-bottom: 30px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            position: relative;
        }
        .portfolio-item:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }
        .portfolio-item img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            transition: var(--transition);
        }
        .portfolio-item:hover img {
            transform: scale(1.05);
        }
        .portfolio-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 25px;
            transform: translateY(100%);
            transition: var(--transition);
        }
        .portfolio-item:hover .portfolio-overlay {
            transform: translateY(0);
        }
        .news-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
            height: 100%;
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        .news-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .news-content {
            padding: 25px;
        }
        .news-date {
            color: var(--accent-color);
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .news-card h4 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 15px;
            line-height: 1.4;
        }
        .news-card p {
            color: #666;
            margin-bottom: 20px;
        }
        .team-member {
            text-align: center;
            margin-bottom: 40px;
        }
        .team-member img {
            width: 200px;
            height: 200px;
            object-fit: cover;
            border-radius: 50%;
            border: 5px solid white;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            margin-bottom: 25px;
        }
        .team-member h4 {
            font-weight: 700;
            margin-bottom: 8px;
        }
        .team-member p {
            color: var(--secondary-color);
            margin-bottom: 15px;
        }
        .contact-info {
            background: var(--light-bg);
            border-radius: 15px;
            padding: 40px;
            height: 100%;
        }
        .contact-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 30px;
        }
        .contact-icon {
            width: 60px;
            height: 60px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            flex-shrink: 0;
            margin-right: 20px;
        }
        .contact-details h4 {
            font-weight: 700;
            margin-bottom: 8px;
        }
        .contact-details p {
            color: #666;
            margin-bottom: 5px;
        }
        .contact-form {
            background: white;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }
        .form-control, .form-select {
            padding: 15px;
            border-radius: 10px;
            border: 1px solid #ddd;
            margin-bottom: 25px;
            transition: var(--transition);
        }
        .form-control:focus, .form-select:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(10, 88, 202, 0.25);
        }
        footer {
            background: var(--dark-bg);
            color: white;
            padding: 80px 0 30px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 700;
            color: white;
            margin-bottom: 25px;
            display: inline-block;
        }
        .footer-logo span {
            color: var(--accent-color);
        }
        .footer-about p {
            color: #aaa;
            margin-bottom: 25px;
            max-width: 350px;
        }
        .footer-links h5, .footer-services h5, .footer-newsletter h5 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 30px;
            position: relative;
            padding-bottom: 15px;
        }
        .footer-links h5:after, .footer-services h5:after, .footer-newsletter h5:after {
            content: '';
            position: absolute;
            width: 40px;
            height: 3px;
            background: var(--accent-color);
            bottom: 0;
            left: 0;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 15px;
        }
        .footer-links a {
            color: #aaa;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 8px;
        }
        .footer-services ul {
            list-style: none;
            padding: 0;
        }
        .footer-services li {
            margin-bottom: 15px;
            color: #aaa;
        }
        .footer-services li i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        .newsletter-form {
            display: flex;
            margin-bottom: 25px;
        }
        .newsletter-form input {
            flex: 1;
            padding: 15px;
            border-radius: 10px 0 0 10px;
            border: none;
        }
        .newsletter-form button {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 10px 10px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .newsletter-form button:hover {
            background: var(--accent-color);
        }
        .social-icons {
            display: flex;
            gap: 15px;
        }
        .social-icons a {
            width: 45px;
            height: 45px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .social-icons a:hover {
            background: var(--primary-color);
            transform: translateY(-5px);
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            margin-top: 50px;
            text-align: center;
            color: #aaa;
            font-size: 0.95rem;
        }
        .copyright a {
            color: var(--accent-color);
            text-decoration: none;
        }
        .friendlink {
            background: var(--light-bg);
            padding: 80px 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 15px 30px;
            border-radius: 10px;
            margin: 10px;
            color: #444;
            text-decoration: none;
            font-weight: 500;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            border: 1px solid #eee;
        }
        .flink:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            text-decoration: none;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 1000;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--accent-color);
            transform: translateY(-5px);
        }
        @media (max-width: 992px) {
            .hero-section h1 {
                font-size: 2.8rem;
            }
            .hero-section {
                padding: 130px 0 90px;
            }
            .section-title h2 {
                font-size: 2.3rem;
            }
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.3rem;
            }
            .hero-section p {
                font-size: 1.1rem;
            }
            .section-title h2 {
                font-size: 2rem;
            }
            .stat-number {
                font-size: 2.8rem;
            }
            .newsletter-form {
                flex-direction: column;
            }
            .newsletter-form input, .newsletter-form button {
                width: 100%;
                border-radius: 10px;
                margin-bottom: 10px;
            }
        }
        @media (max-width: 576px) {
            .hero-section {
                padding: 100px 0 70px;
            }
            .hero-section h1 {
                font-size: 1.9rem;
            }
            .btn-primary, .btn-outline-light {
                padding: 10px 25px;
                display: block;
                width: 100%;
                margin-bottom: 15px;
            }
        }