:root {
            --primary-color: #2e7d32;
            --secondary-color: #558b2f;
            --accent-color: #ff8f00;
            --light-bg: #f9f9f9;
            --dark-text: #333;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--dark-text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5 {
            font-weight: 700;
            color: var(--primary-color);
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            padding: 1rem 0;
            transition: var(--transition);
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color) !important;
        }
        .nav-link {
            font-weight: 600;
            color: #555 !important;
            margin: 0 0.5rem;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--accent-color) !important;
            transform: translateY(-2px);
        }
        .hero {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1582719508461-905c673771bd?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80') no-repeat center center/cover;
            color: white;
            padding: 10rem 0;
            text-align: center;
        }
        .hero h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
        }
        .section {
            padding: 5rem 0;
        }
        .section-alt {
            background-color: var(--light-bg);
        }
        .card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            box-shadow: 0 8px 20px rgba(0,0,0,0.08);
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .icon-box {
            width: 80px;
            height: 80px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 2rem;
            transition: var(--transition);
        }
        .icon-box:hover {
            background: var(--accent-color);
            transform: rotate(15deg) scale(1.1);
        }
        .btn-primary {
            background-color: var(--primary-color);
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-primary:hover {
            background-color: var(--secondary-color);
            transform: scale(1.05);
        }
        .contact-info li {
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }
        .contact-info i {
            color: var(--primary-color);
            width: 30px;
        }
        footer {
            background-color: #222;
            color: #ddd;
            padding: 3rem 0 1.5rem;
        }
        footer a {
            color: #aaa;
            text-decoration: none;
            transition: var(--transition);
        }
        footer a:hover {
            color: var(--accent-color);
        }
        .friendlinks {
            background-color: #f1f8e9;
            padding: 2rem;
            border-radius: 12px;
        }
        .flink {
            display: inline-block;
            background: white;
            padding: 0.8rem 1.5rem;
            margin: 0.5rem;
            border-radius: 8px;
            color: var(--primary-color);
            font-weight: 600;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            transition: var(--transition);
            text-decoration: none;
        }
        .flink:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-5px);
        }
        .research-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .sticky-top {
            top: 20px;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .section {
                padding: 3rem 0;
            }
        }