:root {
            --primary-color: #1a5fb4;
            --secondary-color: #e6a23c;
            --dark-color: #2c3e50;
            --light-color: #f8f9fa;
            --success-color: #67c23a;
            --danger-color: #f56c6c;
            --transition: all 0.3s ease;
        }
        body {
            font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: #333;
            line-height: 1.8;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--dark-color);
            margin-bottom: 1rem;
        }
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
        }
        .section-header h2 {
            font-size: 2.5rem;
            display: inline-block;
            padding-bottom: 15px;
            position: relative;
        }
        .section-header h2:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary-color);
            border-radius: 2px;
        }
        .section-header p {
            font-size: 1.1rem;
            color: #666;
            max-width: 700px;
            margin: 0 auto;
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-brand span {
            color: var(--secondary-color);
        }
        .nav-link {
            font-weight: 600;
            padding: 0.5rem 1.2rem !important;
            transition: var(--transition);
            border-radius: 4px;
            margin: 0 2px;
        }
        .nav-link:hover, .nav-link.active {
            background-color: rgba(26, 95, 180, 0.1);
            color: var(--primary-color) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(44, 62, 80, 0.85), rgba(44, 62, 80, 0.9)), url('https://images.unsplash.com/photo-1461896836934-ffe607ba8211?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 120px 0 100px;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }
        .hero-section h1 {
            font-size: 3.5rem;
            color: white;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }
        .hero-section p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 32px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #0d4a9c;
            border-color: #0d4a9c;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .btn-secondary {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            padding: 12px 32px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-secondary:hover {
            background-color: #d18b1f;
            border-color: #d18b1f;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 2.5rem 2rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            height: 100%;
            transition: var(--transition);
            border: 1px solid #eee;
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.12);
        }
        .feature-icon {
            width: 80px;
            height: 80px;
            background: rgba(26, 95, 180, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: var(--primary-color);
            font-size: 2rem;
        }
        .service-item {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: var(--transition);
            margin-bottom: 30px;
            height: 100%;
        }
        .service-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.12);
        }
        .service-img {
            height: 220px;
            overflow: hidden;
        }
        .service-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .service-item:hover .service-img img {
            transform: scale(1.05);
        }
        .service-content {
            padding: 2rem;
        }
        .stats-section {
            background: linear-gradient(rgba(26, 95, 180, 0.9), rgba(26, 95, 180, 0.95)), url('https://images.unsplash.com/photo-1546519638-68e109498ffc?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 80px 0;
        }
        .stat-item {
            text-align: center;
            padding: 20px;
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
            color: white;
        }
        .stat-text {
            font-size: 1.2rem;
            opacity: 0.9;
        }
        .team-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: var(--transition);
            height: 100%;
        }
        .team-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.12);
        }
        .team-img {
            height: 280px;
            overflow: hidden;
        }
        .team-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .team-card:hover .team-img img {
            transform: scale(1.05);
        }
        .team-info {
            padding: 1.8rem;
            text-align: center;
        }
        .social-links {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 15px;
        }
        .social-links a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #f0f0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #555;
            transition: var(--transition);
        }
        .social-links a:hover {
            background: var(--primary-color);
            color: white;
        }
        .testimonial-card {
            background: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            height: 100%;
            position: relative;
            border: 1px solid #eee;
        }
        .testimonial-card:before {
            content: "\201C";
            font-size: 5rem;
            color: rgba(26, 95, 180, 0.1);
            position: absolute;
            top: 10px;
            left: 20px;
            font-family: serif;
            line-height: 1;
        }
        .client-info {
            display: flex;
            align-items: center;
            margin-top: 1.5rem;
        }
        .client-img {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            overflow: hidden;
            margin-right: 15px;
            border: 3px solid #eee;
        }
        .client-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .contact-info-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            height: 100%;
            text-align: center;
            transition: var(--transition);
            border: 1px solid #eee;
        }
        .contact-info-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.12);
        }
        .contact-icon {
            width: 70px;
            height: 70px;
            background: rgba(26, 95, 180, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        .form-control, .form-select {
            padding: 12px 15px;
            border-radius: 8px;
            border: 1px solid #ddd;
            transition: var(--transition);
        }
        .form-control:focus, .form-select:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(26, 95, 180, 0.25);
        }
        .footer {
            background: var(--dark-color);
            color: #ccc;
            padding: 70px 0 20px;
        }
        .footer h5 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.2rem;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #aaa;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            border-top: 1px solid #444;
            padding-top: 20px;
            margin-top: 50px;
            text-align: center;
            font-size: 0.9rem;
            color: #999;
        }
        .friendlink {
            background: #f8f9fa;
            padding: 80px 0;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 12px 25px;
            border-radius: 50px;
            margin: 8px;
            color: #555;
            text-decoration: none;
            border: 1px solid #eee;
            transition: var(--transition);
            font-weight: 500;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .news-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transition: var(--transition);
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.12);
        }
        .news-img {
            height: 220px;
            overflow: hidden;
        }
        .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .news-card:hover .news-img img {
            transform: scale(1.05);
        }
        .news-content {
            padding: 1.8rem;
        }
        .news-meta {
            color: #777;
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        .news-meta i {
            margin-right: 5px;
        }
        .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;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: #0d4a9c;
            color: white;
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2.5rem;
            }
            .hero-section p {
                font-size: 1.1rem;
            }
            .section-header h2 {
                font-size: 2rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }