body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #d4af37; text-align: center; }
        h2 { color: #8b4513; border-bottom: 2px solid #f0a500; }
        h3 { color: #006400; }
        .nav { background: #d4af37; padding: 10px; display: flex; justify-content: space-between; align-items: center; }
        .nav a { color: white; text-decoration: none; margin: 0 10px; font-weight: bold; }
        .mobile-nav-btn { display: none; background: #8b4513; color: white; border: none; padding: 8px; }
        .content { margin-top: 20px; }
        .download-btn, .login-btn { display: inline-block; background: #006400; color: white; padding: 10px 20px; margin: 10px 0; text-decoration: none; border-radius: 5px; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .footer { margin-top: 40px; text-align: center; padding: 20px; background: #f5f5f5; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .mobile-nav-btn { display: block; }
            .nav-links { display: none; }
            .nav-links.active { display: flex; flex-direction: column; }
        }