:root {
            --primary-blue: #0d47a1;
            --secondary-blue: #1e88e5;
            --accent-gold: #ffb300;
            --dark-bg: #1a237e;
            --light-bg: #f5f7fa;
            --text-dark: #212529;
            --text-light: #ffffff;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--text-dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-blue);
        }
        .section-padding {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        .hero-section {
            background: linear-gradient(rgba(13, 71, 161, 0.85), rgba(26, 35, 126, 0.9)), url('https://images.unsplash.com/photo-1559757148-5c350d0d3c56?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
            color: var(--text-light);
            padding: 8rem 0 6rem;
        }
        .hero-title {
            font-size: 3.2rem;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }
        .btn-primary-custom {
            background-color: var(--accent-gold);
            border-color: var(--accent-gold);
            color: var(--text-dark);
            padding: 0.8rem 2rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            background-color: #ffa000;
            border-color: #ffa000;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .nav-shadow {
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
        }
        .nav-link {
            font-weight: 600;
            margin: 0 0.5rem;
            position: relative;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            left: 50%;
            bottom: 0;
            transition: all 0.3s ease;
        }
        .nav-link:hover::after {
            width: 100%;
            left: 0;
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            border-radius: 12px;
            overflow: hidden;
            height: 100%;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background-color: rgba(30, 136, 229, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }
        .research-area {
            background-color: var(--light-bg);
            border-radius: 12px;
            padding: 2rem;
            height: 100%;
            border-left: 5px solid var(--secondary-blue);
        }
        .stats-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-blue);
            line-height: 1;
        }
        footer {
            background-color: var(--dark-bg);
            color: var(--text-light);
            padding-top: 4rem;
        }
        .footer-link {
            color: #bbdefb;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-link:hover {
            color: var(--accent-gold);
        }
        .friendlink-section {
            background-color: #e8eaf6;
            padding: 3rem 0;
        }
        .flink {
            background-color: white;
            border-radius: 8px;
            padding: 1rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            transition: all 0.3s ease;
            border: 1px solid #e0e0e0;
            height: 100%;
        }
        .flink:hover {
            border-color: var(--secondary-blue);
            color: var(--primary-blue);
            transform: scale(1.03);
        }
        .flink-logo {
            max-height: 30px;
            margin-right: 10px;
        }
        .publication-item {
            border-bottom: 1px solid #eee;
            padding-bottom: 1rem;
            margin-bottom: 1rem;
        }
        .carousel-indicators [data-bs-target] {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin: 0 5px;
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .section-padding {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
            .stats-number {
                font-size: 2.5rem;
            }
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(30, 136, 229, 0.1);
            color: var(--primary-blue);
        }
        .map-container {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }