:root {
            --primary: #1a365d;
            --secondary: #2d74da;
            --accent: #e53e3e;
            --light: #f8fafc;
            --dark: #2d3748;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            color: var(--dark);
            overflow-x: hidden;
        }
        .navbar {
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar.scrolled {
            padding: 0.5rem 0;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
        }
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, #2c5282 100%);
            color: white;
            padding: 8rem 0 6rem;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: 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') center/cover;
            opacity: 0.15;
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .card-hover {
            transition: var(--transition);
            border: none;
            box-shadow: 0 6px 15px rgba(0,0,0,0.05);
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .service-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--secondary), #4299e1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: white;
            font-size: 1.8rem;
        }
        .portfolio-item {
            position: relative;
            overflow: hidden;
            border-radius: 12px;
            margin-bottom: 1.5rem;
        }
        .portfolio-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(26, 54, 93, 0.85);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            opacity: 0;
            transition: var(--transition);
            padding: 2rem;
            color: white;
        }
        .portfolio-item:hover .portfolio-overlay {
            opacity: 1;
        }
        .btn-primary {
            background: linear-gradient(to right, var(--secondary), #3182ce);
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(45, 116, 218, 0.3);
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1.2rem;
            margin: 0.3rem;
            background: var(--light);
            border-radius: 6px;
            color: var(--dark);
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid #e2e8f0;
        }
        .flink:hover {
            background: var(--secondary);
            color: white;
            transform: translateY(-2px);
        }
        .footer {
            background: var(--primary);
            color: #cbd5e0;
            padding: 4rem 0 2rem;
        }
        .footer a {
            color: #a0aec0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--secondary);
            display: block;
            line-height: 1;
        }
        .testimonial-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            margin: 1rem;
            height: 100%;
        }
        .client-logo {
            height: 40px;
            filter: grayscale(100%);
            opacity: 0.7;
            transition: var(--transition);
        }
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        @media (max-width: 768px) {
            .hero {
                padding: 6rem 0 4rem;
            }
            .display-4 {
                font-size: 2.5rem;
            }
        }