body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF4500; font-size: 2.5em; text-align: center; margin-bottom: 30px; }
        h2 { color: #006400; font-size: 1.8em; margin-top: 40px; }
        h3 { color: #8B4513; font-size: 1.4em; margin-top: 25px; }
        .logo { font-size: 2.2em; font-weight: bold; color: #FF4500; text-align: center; margin: 20px 0; }
        nav { background-color: #006400; color: white; padding: 15px; text-align: center; }
        nav a { color: white; margin: 0 15px; text-decoration: none; }
        .mobile-nav-btn { display: none; background: #FF4500; color: white; border: none; padding: 10px; margin: 10px; cursor: pointer; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .download-btn { display: block; width: 200px; margin: 20px auto; padding: 15px; background-color: #FF4500; color: white; text-align: center; border-radius: 5px; text-decoration: none; font-weight: bold; }
        .login-btn { display: block; width: 200px; margin: 20px auto; padding: 15px; background-color: #006400; color: white; text-align: center; border-radius: 5px; text-decoration: none; font-weight: bold; }
        .tag { background-color: #f0f0f0; padding: 5px 10px; margin: 5px; border-radius: 3px; display: inline-block; }
        footer { background-color: #333; color: white; text-align: center; padding: 20px; margin-top: 40px; }
        @media (max-width: 768px) {
            .mobile-nav-btn { display: block; }
            nav { display: none; }
            nav.active { display: block; }
            body { padding: 10px; }
        }