:root {
            --primary-color: #1a56db;
            --secondary-color: #0e9f6e;
            --dark-color: #1f2937;
            --light-color: #f9fafb;
            --gray-color: #6b7280;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--dark-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        .hero-section {
            background: linear-gradient(135deg, rgba(26, 86, 219, 0.9) 0%, rgba(14, 159, 110, 0.8) 100%), url('https://images.unsplash.com/photo-1516321318423-f06f85e504b3?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center;
            background-size: cover;
            color: white;
            padding: 120px 0;
            position: relative;
        }
        .section-padding {
            padding: 80px 0;
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: white;
            font-size: 28px;
        }
        .flink {
            display: inline-block;
            background: var(--light-color);
            padding: 12px 24px;
            border-radius: 8px;
            margin: 5px;
            color: var(--dark-color);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #e5e7eb;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-3px);
        }
        .footer {
            background: var(--dark-color);
            color: white;
        }
        .footer a {
            color: #d1d5db;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer a:hover {
            color: white;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
        }
        .nav-link {
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--primary-color);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 30px;
            font-weight: 500;
            transition: all 0.3s;
        }
        .btn-primary:hover {
            background-color: #1e40af;
            border-color: #1e40af;
            transform: translateY(-3px);
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        .animate-on-scroll {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }
        .animate-on-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 80px 0;
            }
            .section-padding {
                padding: 60px 0;
            }
            .stats-number {
                font-size: 2.5rem;
            }
            .navbar-collapse {
                background: white;
                padding: 20px;
                border-radius: 10px;
                box-shadow: 0 10px 30px rgba(0,0,0,0.1);
                margin-top: 10px;
            }
        }
        .client-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.3s;
        }
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .contact-info-box {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            height: 100%;
            transition: transform 0.3s;
        }
        .contact-info-box:hover {
            transform: translateY(-10px);
        }