:root {
            --ngri-blue: #0a3d62;
            --ngri-teal: #079992;
            --ngri-light: #e8f4f8;
            --ngri-dark: #1e272e;
            --ngri-accent: #f9ca24;
        }
        body {
            font-family: 'Open Sans', sans-serif;
            color: #333;
            line-height: 1.7;
        }
        h1, h2, h3, h4, h5, h6, .navbar-brand {
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
        }
        .hero-section {
            background: linear-gradient(rgba(10, 61, 98, 0.85), rgba(7, 153, 146, 0.8)), url('https://images.unsplash.com/photo-1544551763-46a013bb70d5?ixlib=rb-4.0.3&auto=format&fit=crop&w=1950&q=80') center/cover no-repeat;
            color: white;
            padding: 10rem 0 6rem;
            margin-top: 76px;
        }
        .section-title {
            color: var(--ngri-blue);
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 2.5rem;
        }
        .section-title:after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 4px;
            background: var(--ngri-teal);
        }
        .text-center .section-title:after {
            left: 50%;
            transform: translateX(-50%);
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(10, 61, 98, 0.15);
        }
        .card-icon {
            font-size: 2.5rem;
            color: var(--ngri-teal);
            margin-bottom: 1rem;
        }
        .bg-light-custom {
            background-color: var(--ngri-light);
        }
        .btn-primary-custom {
            background-color: var(--ngri-blue);
            border-color: var(--ngri-blue);
            color: white;
            padding: 0.75rem 2rem;
            font-weight: 600;
            border-radius: 30px;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            background-color: var(--ngri-teal);
            border-color: var(--ngri-teal);
            transform: scale(1.05);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.98) !important;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            padding: 1rem 0;
            transition: all 0.3s ease;
        }
        .navbar-brand {
            color: var(--ngri-blue) !important;
            font-size: 1.8rem;
            font-weight: 700;
        }
        .navbar-nav .nav-link {
            color: var(--ngri-dark) !important;
            font-weight: 600;
            margin: 0 0.5rem;
            padding: 0.5rem 1rem !important;
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            background-color: var(--ngri-teal);
            color: white !important;
        }
        .footer {
            background-color: var(--ngri-dark);
            color: #ccc;
            padding-top: 4rem;
        }
        .footer a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: white;
            text-decoration: underline;
        }
        .friendlink-container {
            background-color: rgba(255,255,255,0.05);
            border-radius: 10px;
            padding: 2rem;
            margin-top: 2rem;
        }
        .flink {
            display: inline-block;
            background-color: rgba(255,255,255,0.1);
            color: #ddd;
            padding: 0.6rem 1.2rem;
            margin: 0.5rem;
            border-radius: 50px;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        .flink:hover {
            background-color: var(--ngri-teal);
            color: white;
            transform: translateY(-3px);
            text-decoration: none;
        }
        .research-highlight {
            border-left: 5px solid var(--ngri-teal);
            padding-left: 1.5rem;
            background: linear-gradient(to right, rgba(7, 153, 146, 0.05), transparent);
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
            margin: 2rem 0;
        }
        .timeline {
            position: relative;
            padding-left: 2rem;
        }
        .timeline:before {
            content: '';
            position: absolute;
            left: 7px;
            top: 0;
            height: 100%;
            width: 3px;
            background: var(--ngri-teal);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2rem;
            padding-left: 1.5rem;
        }
        .timeline-item:before {
            content: '';
            position: absolute;
            left: -10px;
            top: 5px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--ngri-blue);
            border: 4px solid white;
            box-shadow: 0 0 0 3px var(--ngri-teal);
        }
        .img-hover-zoom {
            overflow: hidden;
            border-radius: 10px;
        }
        .img-hover-zoom img {
            transition: transform 0.5s ease;
        }
        .img-hover-zoom:hover img {
            transform: scale(1.05);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 7rem 0 4rem;
                margin-top: 66px;
            }
            .display-4 {
                font-size: 2.2rem;
            }
            .navbar-nav .nav-link {
                margin: 0.2rem 0;
            }
        }