body { font-family: 'Segoe UI', Arial, sans-serif; line-height: 1.6; margin: 0; padding: 0; color: #333; }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 28px; font-weight: bold; color: #FF4500; text-align: center; padding: 20px 0; }
        .nav { background: #1E90FF; color: white; padding: 10px; text-align: center; }
        .nav a { color: white; margin: 0 15px; text-decoration: none; }
        .mobile-toggle { display: none; }
        h1 { font-size: 2.5em; color: #FF4500; margin-bottom: 20px; }
        h2 { font-size: 1.8em; color: #1E90FF; margin: 30px 0 15px; }
        h3 { font-size: 1.4em; color: #2E8B57; margin: 25px 0 10px; }
        .download-btn { display: inline-block; background: #4CAF50; color: white; padding: 12px 25px; margin: 15px 0; border-radius: 5px; text-decoration: none; font-weight: bold; }
        .login-btn { display: inline-block; background: #2196F3; color: white; padding: 12px 25px; margin: 15px 0; border-radius: 5px; text-decoration: none; font-weight: bold; }
        .image-container { text-align: center; margin: 25px 0; }
        .image-container img { max-width: 100%; height: auto; border-radius: 8px; }
        .footer { background: #333; color: white; text-align: center; padding: 20px; margin-top: 30px; }
        .tags { margin: 20px 0; }
        .tags a { background: #f0f0f0; color: #333; padding: 5px 10px; margin: 0 5px; border-radius: 3px; text-decoration: none; }
        @media (max-width: 768px) {
            .nav { position: relative; }
            .mobile-toggle { display: block; position: absolute; right: 20px; top: 15px; background: none; border: none; color: white; font-size: 20px; cursor: pointer; }
            .nav-links { display: none; }
            .nav-links.active { display: block; }
            .nav-links a { display: block; padding: 10px; }
        }