:root {
            --cse-green: #2a7d2e;
            --cse-dark-green: #1e5a21;
            --cse-blue: #0056b3;
            --cse-light: #f8f9fa;
            --cse-dark: #343a40;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--cse-green) !important;
        }
        .nav-link {
            font-weight: 500;
            padding: 0.5rem 1.2rem !important;
            transition: var(--transition);
            border-radius: 4px;
        }
        .nav-link:hover, .nav-link.active {
            background-color: rgba(42, 125, 46, 0.1);
            color: var(--cse-dark-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-1611273426858-450d8e3c9fce?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') no-repeat center center/cover;
            color: white;
            padding: 8rem 0 6rem;
            margin-top: 76px;
        }
        .section-title {
            color: var(--cse-dark-green);
            border-left: 5px solid var(--cse-green);
            padding-left: 1rem;
            margin-bottom: 2.5rem;
        }
        .card {
            border: none;
            border-radius: 10px;
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(42, 125, 46, 0.15);
        }
        .card-img-top {
            height: 220px;
            object-fit: cover;
        }
        .btn-cse {
            background-color: var(--cse-green);
            color: white;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            border: 2px solid var(--cse-green);
        }
        .btn-cse:hover {
            background-color: transparent;
            color: var(--cse-green);
            border-color: var(--cse-green);
        }
        .icon-box {
            width: 70px;
            height: 70px;
            background: rgba(42, 125, 46, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--cse-green);
            font-size: 1.8rem;
        }
        footer {
            background-color: var(--cse-dark);
            color: #ddd;
            padding-top: 3rem;
        }
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
            display: block;
            margin-bottom: 0.5rem;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .friendlink {
            display: inline-block;
            margin: 0.5rem;
            padding: 0.5rem 1.5rem;
            background: rgba(255,255,255,0.1);
            border-radius: 30px;
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .friendlink:hover {
            background: rgba(255,255,255,0.2);
            color: white;
            transform: scale(1.05);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--cse-green);
            line-height: 1;
        }
        .research-area {
            border-left: 3px solid var(--cse-green);
            padding-left: 1.5rem;
            margin-bottom: 2rem;
        }
        .timeline-item {
            position: relative;
            padding-left: 2rem;
            margin-bottom: 2rem;
            border-left: 2px solid var(--cse-green);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -10px;
            top: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--cse-green);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 6rem 0 4rem;
                text-align: center;
            }
            .stat-number {
                font-size: 2.5rem;
            }
            .navbar-nav {
                text-align: center;
                background: white;
                padding: 1rem;
                border-radius: 10px;
                margin-top: 1rem;
            }
        }