body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #D42426; font-size: 2.5em; border-bottom: 3px solid #FF9933; padding-bottom: 10px; }
        h2 { color: #0A6EBD; font-size: 1.8em; margin-top: 30px; }
        h3 { color: #4CAF50; font-size: 1.4em; }
        .logo { font-size: 2em; font-weight: bold; color: #FF9933; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
        .mobile-nav { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav { display: block; }
            body { padding: 10px; }
        }
        .download-btn { background: #4CAF50; color: white; padding: 12px 24px; text-decoration: none; border-radius: 5px; margin: 10px 0; display: inline-block; }
        .login-btn { background: #0A6EBD; color: white; padding: 12px 24px; text-decoration: none; border-radius: 5px; margin: 10px 0; display: inline-block; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .tags { margin: 20px 0; }
        .tag { background: #eee; padding: 5px 10px; margin: 5px; display: inline-block; border-radius: 3px; }
        .copyright { margin-top: 40px; padding-top: 20px; border-top: 1px solid #eee; text-align: center; font-size: 0.9em; color: #666; }