:root {
            --primary-blue: #006994;
            --secondary-teal: #20B2AA;
            --dark-navy: #003B5C;
            --light-cyan: #E0F7FA;
            --accent-orange: #FF6B35;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--dark-navy) !important;
        }
        .nav-link {
            font-weight: 500;
            transition: color 0.3s ease;
        }
        .nav-link:hover {
            color: var(--accent-orange) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 59, 92, 0.85), rgba(0, 105, 148, 0.9)), url('https://images.unsplash.com/photo-1506905925346-21bda4d32df4?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
            color: white;
            padding: 8rem 0;
            text-align: center;
        }
        .section-title {
            color: var(--dark-navy);
            border-left: 5px solid var(--accent-orange);
            padding-left: 15px;
            margin-bottom: 2rem;
        }
        .card {
            border: none;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .card-icon {
            font-size: 2.5rem;
            color: var(--primary-blue);
            margin-bottom: 1rem;
        }
        .btn-primary {
            background-color: var(--primary-blue);
            border-color: var(--primary-blue);
            padding: 0.75rem 2rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: var(--dark-navy);
            border-color: var(--dark-navy);
            transform: scale(1.05);
        }
        .research-highlight {
            background-color: var(--light-cyan);
            padding: 3rem;
            border-radius: 15px;
        }
        footer {
            background-color: var(--dark-navy);
            color: white;
            padding-top: 3rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: white;
            text-decoration: underline;
        }
        .friendlink-container {
            background-color: #f8f9fa;
            padding: 2rem;
            border-radius: 10px;
            margin-top: 2rem;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 0.75rem 1.5rem;
            margin: 0.5rem;
            border-radius: 50px;
            color: var(--dark-navy);
            text-decoration: none;
            font-weight: 500;
            border: 2px solid transparent;
            transition: all 0.3s ease;
        }
        .flink:hover {
            border-color: var(--accent-orange);
            color: var(--accent-orange);
            transform: translateY(-3px);
        }
        .contact-info i {
            color: var(--secondary-teal);
            margin-right: 10px;
        }
        .map-container iframe {
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .publication-item {
            border-bottom: 1px dashed #ddd;
            padding-bottom: 1rem;
            margin-bottom: 1rem;
        }
        .sticky-nav {
            position: sticky;
            top: 0;
            z-index: 1020;
            backdrop-filter: blur(10px);
            background-color: rgba(255, 255, 255, 0.95);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 5rem 0;
            }
            .display-4 {
                font-size: 2.5rem;
            }
            .research-highlight {
                padding: 2rem 1rem;
            }
        }