:root {
            --primary-color: #1a3a8f;
            --secondary-color: #00b4d8;
            --accent-color: #ff6b35;
            --dark-color: #0d1b3e;
            --light-color: #f8f9fa;
            --text-color: #333333;
            --border-radius: 12px;
            --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--dark-color);
        }
        .section-header {
            position: relative;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-header h2 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }
        .section-header h2:after {
            content: '';
            position: absolute;
            width: 70px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .bg-gradient {
            background: linear-gradient(135deg, var(--dark-color) 0%, var(--primary-color) 100%);
        }
        .btn-primary-custom {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            border: none;
            color: white;
            padding: 12px 28px;
            border-radius: var(--border-radius);
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(26, 58, 143, 0.3);
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(26, 58, 143, 0.4);
            color: white;
        }
        .card-hover {
            transition: var(--transition);
            border: none;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            padding: 15px 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-color) !important;
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            color: var(--dark-color);
            padding: 8px 15px;
            margin: 0 3px;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            color: var(--primary-color);
            background-color: rgba(26, 58, 143, 0.05);
        }
        .hero-section {
            padding: 150px 0 100px;
            background: linear-gradient(rgba(13, 27, 62, 0.9), rgba(26, 58, 143, 0.9)), url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?ixlib=rb-4.0.3&auto=format&fit=crop&w=2072&q=80') no-repeat center center/cover;
            color: white;
            position: relative;
        }
        .hero-content h1 {
            font-size: 3.5rem;
            color: white;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .counter-item {
            text-align: center;
            padding: 25px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .counter-number {
            font-size: 3rem;
            font-weight: 800;
            color: white;
            display: block;
            line-height: 1;
        }
        .feature-icon {
            width: 70px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
            margin-bottom: 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .service-card {
            padding: 40px 30px;
            border-radius: var(--border-radius);
            background: white;
            height: 100%;
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        .service-card:hover {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
        }
        .service-card:hover h3,
        .service-card:hover p,
        .service-card:hover .service-icon {
            color: white;
        }
        .service-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            transition: var(--transition);
        }
        .testimonial-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 30px;
            box-shadow: var(--box-shadow);
            position: relative;
            margin-top: 40px;
        }
        .testimonial-card:before {
            content: "\201C";
            font-size: 6rem;
            color: rgba(26, 58, 143, 0.1);
            position: absolute;
            top: -20px;
            left: 20px;
            font-family: serif;
        }
        .client-image {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            object-fit: cover;
            border: 4px solid white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .flink {
            display: inline-block;
            padding: 10px 20px;
            background: rgba(26, 58, 143, 0.05);
            border-radius: var(--border-radius);
            margin: 5px;
            color: var(--dark-color);
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid rgba(26, 58, 143, 0.1);
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .footer {
            background: var(--dark-color);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 80px;
        }
        .footer a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            padding-left: 5px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 50px;
        }
        .contact-info-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 25px;
        }
        .contact-icon {
            width: 50px;
            height: 50px;
            background: rgba(26, 58, 143, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            color: var(--primary-color);
            flex-shrink: 0;
        }
        @media (max-width: 992px) {
            .hero-content h1 {
                font-size: 2.8rem;
            }
            .section-header h2 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 120px 0 80px;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .counter-number {
                font-size: 2.5rem;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
        }