:root {
            --primary-green: #2c5f2d;
            --secondary-green: #4a7c59;
            --accent-gold: #d4af37;
            --light-bg: #f8f9fa;
            --dark-text: #1a2e1a;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--dark-text);
            line-height: 1.7;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-green);
        }
        .hero-section {
            background: linear-gradient(rgba(44, 95, 45, 0.85), rgba(44, 95, 45, 0.9)), url('https://images.unsplash.com/photo-1542273917363-3b1817f69a2d?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 10rem 0 6rem;
            min-height: 90vh;
            display: flex;
            align-items: center;
        }
        .hero-section h1 {
            color: white;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .hero-section p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 1.5rem auto;
        }
        .btn-primary-custom {
            background-color: var(--accent-gold);
            border-color: var(--accent-gold);
            color: var(--dark-text);
            padding: 0.75rem 2rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-primary-custom:hover {
            background-color: #c19b2a;
            border-color: #c19b2a;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 3rem;
            padding-bottom: 1rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background-color: var(--accent-gold);
        }
        .section-title.text-center::after {
            left: 50%;
            transform: translateX(-50%);
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            border: none;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .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(44, 95, 45, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--primary-green);
            font-size: 1.8rem;
        }
        .research-area {
            border-left: 4px solid var(--secondary-green);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
            transition: all 0.3s ease;
        }
        .research-area:hover {
            border-left-color: var(--accent-gold);
            background-color: rgba(74, 124, 89, 0.05);
            padding-left: 2rem;
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            margin: 0.3rem;
            background-color: var(--light-bg);
            border-radius: 50px;
            color: var(--secondary-green);
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
        }
        .flink:hover {
            background-color: var(--secondary-green);
            color: white;
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--dark-text);
            color: #b0b0b0;
        }
        footer a {
            color: #b0b0b0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        footer a:hover {
            color: white;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .news-card img {
            height: 200px;
            object-fit: cover;
        }
        .sticky-nav {
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
        }
        .navbar-brand {
            font-weight: 800;
            color: var(--primary-green) !important;
            font-size: 1.8rem;
        }
        .nav-link {
            font-weight: 500;
            margin: 0 0.5rem;
            color: var(--dark-text) !important;
            transition: color 0.3s ease;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-green) !important;
        }
        .dropdown-menu {
            border: none;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            border-radius: 10px;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary-green);
            line-height: 1;
        }
        .map-container {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        .contact-info-box {
            background-color: var(--light-bg);
            padding: 2rem;
            border-radius: 10px;
            height: 100%;
            border-left: 4px solid var(--accent-gold);
        }
        .publication-list li {
            padding: 0.75rem 0;
            border-bottom: 1px solid #eee;
        }
        .publication-list li:last-child {
            border-bottom: none;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 8rem 0 4rem;
                min-height: 80vh;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }