:root {
            --primary-green: #1b5e20;
            --secondary-green: #2e7d32;
            --accent-teal: #00695c;
            --light-bg: #f1f8e9;
            --dark-text: #263238;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            color: var(--dark-text);
            line-height: 1.7;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary-green) !important;
        }
        .nav-link {
            font-weight: 500;
            transition: color 0.3s;
        }
        .nav-link:hover {
            color: var(--secondary-green) !important;
        }
        .hero-section {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1518837695005-2083093ee35b?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
            color: white;
            padding: 8rem 0;
        }
        .section-title {
            color: var(--primary-green);
            border-bottom: 3px solid var(--accent-teal);
            padding-bottom: 0.75rem;
            margin-bottom: 2.5rem;
            position: relative;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--secondary-green);
        }
        .card {
            border: none;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: transform 0.4s, box-shadow 0.4s;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background: var(--light-bg);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            color: var(--primary-green);
            font-size: 1.8rem;
        }
        .research-area {
            background: var(--light-bg);
            border-left: 4px solid var(--secondary-green);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            transition: all 0.3s;
        }
        .research-area:hover {
            background: white;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .btn-neeri {
            background: var(--primary-green);
            color: white;
            padding: 0.75rem 2rem;
            border-radius: 4px;
            transition: all 0.3s;
            border: none;
        }
        .btn-neeri:hover {
            background: var(--secondary-green);
            color: white;
            transform: scale(1.05);
        }
        footer {
            background: #1a237e;
            color: white;
        }
        .flink {
            color: #bbdefb;
            text-decoration: none;
            padding: 0.5rem 0;
            display: inline-block;
            transition: color 0.3s;
        }
        .flink:hover {
            color: white;
            text-decoration: underline;
        }
        .contact-info li {
            margin-bottom: 1rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .contact-info li i {
            position: absolute;
            left: 0;
            top: 0.25rem;
            color: var(--secondary-green);
        }
        .publication-item {
            border-bottom: 1px solid #e0e0e0;
            padding: 1rem 0;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-green);
            line-height: 1;
        }
        .stat-label {
            font-size: 1rem;
            color: #666;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 5rem 0;
            }
            .display-4 {
                font-size: 2.5rem;
            }
        }
        .schema-ld {
            display: none;
        }