:root {
            --primary-color: #0a3d62;
            --secondary-color: #1e7aa5;
            --accent-color: #f9c74f;
            --light-color: #f8f9fa;
            --dark-color: #343a40;
            --text-color: #333;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--text-color);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .hero-section {
            background: linear-gradient(rgba(10, 61, 98, 0.85), rgba(30, 122, 165, 0.8)), url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 150px 0;
            text-align: center;
        }
        .section-padding {
            padding: 80px 0;
        }
        .bg-light-custom {
            background-color: #f0f8ff;
        }
        .card {
            border: none;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .card-icon {
            font-size: 3rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
        }
        .btn-primary-custom {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary-custom:hover {
            background-color: var(--secondary-color);
            border-color: var(--secondary-color);
            transform: scale(1.05);
        }
        .navbar {
            background-color: rgba(255,255,255,0.95);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            padding: 15px 0;
            transition: var(--transition);
        }
        .navbar.scrolled {
            padding: 10px 0;
        }
        .nav-link {
            color: var(--primary-color) !important;
            font-weight: 600;
            margin: 0 10px;
            transition: var(--transition);
        }
        .nav-link:hover, .nav-link.active {
            color: var(--secondary-color) !important;
        }
        .footer {
            background-color: var(--dark-color);
            color: var(--light-color);
            padding: 60px 0 20px;
        }
        .footer a {
            color: #adb5bd;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: var(--accent-color);
        }
        .friend-links {
            background-color: #e9ecef;
            padding: 40px 0;
        }
        .flink {
            display: inline-block;
            margin: 5px 15px;
            color: var(--primary-color);
            font-weight: 500;
            transition: var(--transition);
        }
        .flink:hover {
            color: var(--secondary-color);
            text-decoration: underline;
        }
        .research-item {
            border-left: 4px solid var(--secondary-color);
            padding-left: 20px;
            margin-bottom: 30px;
        }
        .contact-info i {
            color: var(--secondary-color);
            margin-right: 10px;
        }
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 4px;
            background-color: var(--secondary-color);
        }
        .timeline-item {
            margin-bottom: 40px;
            position: relative;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -38px;
            top: 5px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: var(--primary-color);
            border: 4px solid var(--secondary-color);
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
        }
        .hover-zoom {
            overflow: hidden;
        }
        .hover-zoom img {
            transition: transform 0.5s ease;
        }
        .hover-zoom:hover img {
            transform: scale(1.05);
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(10, 61, 98, 0.1);
            color: var(--primary-color);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 100px 0;
            }
            .section-padding {
                padding: 50px 0;
            }
        }