:root {
            --primary-green: #2ecc71;
            --secondary-blue: #3498db;
            --accent-orange: #e67e22;
            --dark-bg: #1a1a2e;
            --light-text: #ecf0f1;
        }
        body {
            background: linear-gradient(135deg, var(--dark-bg) 0%, #16213e 100%);
            color: var(--light-text);
            font-family: 'Segoe UI', system-ui, sans-serif;
            line-height: 1.7;
        }
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(45deg, var(--primary-green), var(--secondary-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }
        .hero-section {
            background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), 
                        url('https://via.placeholder.com/1200x600') center/cover;
            padding: 100px 0;
            text-align: center;
            border-bottom: 3px solid var(--primary-green);
        }
        .content-section {
            background: rgba(255,255,255,0.05);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 30px;
            margin: 25px 0;
            border: 1px solid rgba(255,255,255,0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.3);
        }
        h1, h2, h3 {
            color: var(--primary-green);
            margin-bottom: 1.5rem;
        }
        h1 {
            font-size: 2.8rem;
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
        }
        h2 {
            font-size: 2.2rem;
            border-left: 4px solid var(--accent-orange);
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--secondary-blue);
        }
        .key-feature {
            background: rgba(46, 204, 113, 0.1);
            border-left: 4px solid var(--primary-green);
            padding: 20px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        .mission-highlight {
            background: rgba(52, 152, 219, 0.1);
            border-radius: 10px;
            padding: 25px;
            margin: 25px 0;
        }
        .eco-impact {
            background: rgba(230, 126, 34, 0.1);
            border-radius: 10px;
            padding: 25px;
            margin: 25px 0;
        }
        .img-container {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.4);
            margin: 30px 0;
            transition: transform 0.3s ease;
        }
        .img-container:hover {
            transform: scale(1.02);
        }
        .nav-link {
            color: var(--light-text) !important;
            transition: color 0.3s ease;
            font-weight: 500;
        }
        .nav-link:hover {
            color: var(--primary-green) !important;
        }
        footer {
            background: rgba(0,0,0,0.8);
            padding: 40px 0;
            margin-top: 50px;
            border-top: 2px solid var(--primary-green);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            margin-top: 20px;
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 60px 0;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .content-section {
                padding: 20px;
                margin: 15px 0;
            }
        }
        .sticky-nav {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(26, 26, 46, 0.95);
            backdrop-filter: blur(10px);
        }
        .feature-icon {
            font-size: 2rem;
            color: var(--primary-green);
            margin-right: 15px;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-orange);
            display: block;
        }
        .quote-section {
            border-left: 4px solid var(--secondary-blue);
            padding-left: 20px;
            font-style: italic;
            margin: 25px 0;
            opacity: 0.9;
        }