:root {
            --primary-color: #1a237e;
            --secondary-color: #ff9800;
            --accent-color: #4caf50;
            --dark-color: #121212;
            --light-color: #f5f5f5;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar {
            background-color: rgba(26, 35, 126, 0.95);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: white !important;
        }
        .nav-link {
            color: rgba(255, 255, 255, 0.9) !important;
            font-weight: 500;
            margin: 0 8px;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--secondary-color) !important;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(18, 18, 18, 0.85), rgba(26, 35, 126, 0.9)), url('https://images.unsplash.com/photo-1551958219-acbc608c6377?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 160px 0 120px;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }
        .hero-title {
            font-size: 3.5rem;
            margin-bottom: 25px;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .btn-primary {
            background-color: var(--secondary-color);
            border: none;
            padding: 14px 32px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #e68900;
            transform: scale(1.05);
            box-shadow: 0 8px 20px rgba(255, 152, 0, 0.3);
        }
        section {
            padding: 100px 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 60px;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
        }
        .card {
            border: none;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-15px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .icon-box {
            width: 80px;
            height: 80px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            font-size: 2rem;
            transition: var(--transition);
        }
        .feature-item:hover .icon-box {
            background: var(--secondary-color);
            transform: rotate(15deg);
        }
        .team-img {
            width: 180px;
            height: 180px;
            object-fit: cover;
            border-radius: 50%;
            border: 5px solid var(--light-color);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        .team-member:hover .team-img {
            border-color: var(--secondary-color);
            transform: scale(1.05);
        }
        .contact-info i {
            color: var(--secondary-color);
            margin-right: 15px;
            font-size: 1.2rem;
        }
        footer {
            background-color: var(--dark-color);
            color: #ccc;
            padding: 80px 0 30px;
        }
        .footer-links a {
            color: #aaa;
            text-decoration: none;
            transition: var(--transition);
            display: block;
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 8px;
        }
        .social-icons a {
            display: inline-block;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            margin-right: 10px;
            color: white;
            transition: var(--transition);
        }
        .social-icons a:hover {
            background: var(--secondary-color);
            transform: translateY(-5px);
        }
        .friend-links {
            background: #f9f9f9;
            padding: 60px 0;
            border-top: 1px solid #eee;
            border-bottom: 1px solid #eee;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 12px 25px;
            margin: 10px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border: 1px solid #e0e0e0;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-5px);
            border-color: var(--primary-color);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--secondary-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;
            transition: var(--transition);
        }
        .back-to-top.active {
            opacity: 1;
        }
        .back-to-top:hover {
            background: var(--primary-color);
            transform: scale(1.1);
        }
        .cert-badge {
            background: var(--accent-color);
            color: white;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.9rem;
            display: inline-block;
            margin: 5px;
        }