:root {
            --primary: #4a6fa5;
            --secondary: #166088;
            --accent: #4fc3f7;
            --light: #f8f9fa;
            --dark: #212529;
            --success: #28a745;
            --warning: #ffc107;
            --danger: #dc3545;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('background.jpg') no-repeat center center fixed;
            background-size: cover;
            color: var(--light);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        header {
            background-color: rgba(33, 37, 41, 0.9);
            padding: 1rem;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .logo img {
            height: 40px;
        }

        .logo-text {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            gap: 1.5rem;
        }

        .nav-links a {
            color: var(--light);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
            padding: 0.5rem;
        }

        .nav-links a:hover {
            color: var(--accent);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--light);
            font-size: 1.5rem;
            cursor: pointer;
        }

        main {
            flex: 1;
            padding: 2rem;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }

        .hero {
            text-align: center;
            padding: 3rem 0;
            animation: fadeIn 1s ease-in;
        }

        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--accent);
        }

        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 2rem;
        }

        .cta-button {
            display: inline-block;
            background-color: var(--accent);
            color: var(--dark);
            padding: 0.8rem 1.8rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            margin: 0.5rem;
            border: 2px solid var(--accent);
        }

        .cta-button:hover {
            background-color: transparent;
            color: var(--accent);
        }

        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }

        .feature-card {
            background-color: rgba(33, 37, 41, 0.8);
            border-radius: 10px;
            padding: 1.5rem;
            transition: transform 0.3s;
            border-left: 4px solid var(--accent);
        }

        .feature-card:hover {
            transform: translateY(-5px);
        }

        .feature-card i {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 1rem;
        }

        .feature-card h3 {
            margin-bottom: 1rem;
            color: var(--accent);
        }

        .demo {
            background-color: rgba(33, 37, 41, 0.8);
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            text-align: center;
        }

        .demo video {
            max-width: 100%;
            border-radius: 8px;
            margin-top: 1rem;
        }

        .download-section {
            text-align: center;
            padding: 2rem;
            background-color: rgba(33, 37, 41, 0.8);
            border-radius: 10px;
            margin: 3rem 0;
        }

        .platform-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1.5rem;
        }

        .platform-btn {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            background-color: var(--primary);
            color: white;
            text-decoration: none;
            transition: background-color 0.3s;
        }

        .platform-btn:hover {
            background-color: var(--secondary);
        }

        footer {
            background-color: rgba(33, 37, 41, 0.9);
            padding: 2rem;
            text-align: center;
            margin-top: auto;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: var(--light);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: var(--accent);
        }

        .social-icons {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .social-icons a {
            color: var(--light);
            font-size: 1.5rem;
            transition: color 0.3s;
        }

        .social-icons a:hover {
            color: var(--accent);
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Mobile Styles */
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background-color: rgba(33, 37, 41, 0.95);
                flex-direction: column;
                align-items: center;
                padding: 2rem 0;
                transition: left 0.3s;
            }

            .nav-links.active {
                left: 0;
            }

            .mobile-menu-btn {
                display: block;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .hero p {
                font-size: 1rem;
            }

            .features {
                grid-template-columns: 1fr;
            }

            .platform-buttons {
                flex-direction: column;
                align-items: center;
            }

            .platform-btn {
                width: 100%;
                max-width: 250px;
            }
        }

        /* Accessibility Focus Styles */
        a:focus, button:focus {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
        }

        /* Dark/Light Mode Toggle (Bonus) */
        .theme-toggle {
            background: none;
            border: none;
            color: var(--light);
            cursor: pointer;
            font-size: 1.2rem;
            margin-left: 1rem;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            background-color: rgba(33, 37, 41, 0.8);
            border-radius: 8px;
            overflow: hidden;
        }
        
        .comparison-table th, 
        .comparison-table td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .comparison-table th {
            background-color: var(--secondary);
            font-weight: 600;
        }
        
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        
        .feature-name {
            font-weight: 600;
            color: var(--accent);
        }
        
        .check {
            color: var(--success);
        }
        
        .warning {
            color: var(--warning);
        }
        
        .cross {
            color: var(--danger);
        }
        
        .comparison-section {
            padding: 2rem;
            background-color: rgba(33, 37, 41, 0.8);
            border-radius: 10px;
            margin: 3rem 0;
        }