:root {
            --primary-color: #0a3d62;
            --secondary-color: #1e90ff;
            --accent-color: #2ecc71;
            --light-bg: #f8f9fa;
            --dark-text: #2c3e50;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--dark-text);
            line-height: 1.6;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar {
            background-color: rgba(10, 61, 98, 0.95);
            padding: 1rem 0;
            transition: var(--transition);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: white !important;
        }
        .nav-link {
            color: rgba(255,255,255,0.9) !important;
            font-weight: 500;
            margin: 0 8px;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent-color) !important;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 80%;
        }
        .hero-section {
            background: linear-gradient(rgba(10, 61, 98, 0.85), rgba(10, 61, 98, 0.9)), url('https://images.unsplash.com/photo-1516549655669-df4f6a6f8d64?ixlib=rb-4.0.3&auto=format&fit=crop&w=1950&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0 80px;
            margin-top: 76px;
        }
        .hero-title {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--accent-color);
        }
        .card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: var(--transition);
            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(--secondary-color);
            margin-bottom: 1.5rem;
        }
        .btn-primary {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            padding: 10px 30px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: #082a47;
            border-color: #082a47;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .research-card {
            border-left: 5px solid var(--accent-color);
        }
        .news-card {
            border-top: 5px solid var(--secondary-color);
        }
        .flink {
            display: inline-block;
            padding: 8px 15px;
            margin: 5px;
            background-color: var(--light-bg);
            border-radius: 5px;
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid #ddd;
        }
        .flink:hover {
            background-color: var(--secondary-color);
            color: white;
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 60px 0 20px;
        }
        .footer-link {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-link:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            margin-top: 40px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
        }
        .sticky-top {
            top: 0;
            z-index: 1020;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--secondary-color);
            transform: translateY(-5px);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        .stat-label {
            font-size: 1.1rem;
            color: var(--dark-text);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .research-area {
            padding: 30px;
            background-color: white;
            border-radius: 10px;
            height: 100%;
            transition: var(--transition);
            border: 1px solid #eee;
        }
        .research-area:hover {
            background-color: #f0f8ff;
        }
        .timeline {
            position: relative;
            padding-left: 30px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background-color: var(--secondary-color);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 30px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 5px;
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background-color: var(--accent-color);
            border: 3px solid white;
            box-shadow: 0 0 0 3px var(--secondary-color);
        }
        .contact-info-box {
            padding: 25px;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            text-align: center;
            height: 100%;
            transition: var(--transition);
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .contact-icon {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
        }
        .map-container {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .carousel-item img {
            height: 500px;
            object-fit: cover;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 50px 0;
            }
            .carousel-item img {
                height: 300px;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }
        .partnership-logo {
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 15px;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .partnership-logo:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        .partnership-logo img {
            max-height: 100%;
            max-width: 100%;
            filter: grayscale(50%);
            transition: var(--transition);
        }
        .partnership-logo:hover img {
            filter: grayscale(0%);
        }
        .publication-item {
            padding: 20px;
            border-bottom: 1px solid #eee;
            transition: var(--transition);
        }
        .publication-item:hover {
            background-color: #f9f9f9;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(10, 61, 98, 0.05);
            color: var(--primary-color);
            font-weight: 600;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 0.25rem rgba(10, 61, 98, 0.25);
        }