body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #2c3e50; }
        h1 { font-size: 2.2em; border-bottom: 3px solid #e74c3c; padding-bottom: 10px; }
        h2 { font-size: 1.8em; margin-top: 30px; }
        h3 { font-size: 1.5em; margin-top: 25px; }
        .logo { font-size: 2.5em; font-weight: bold; color: #e74c3c; text-shadow: 2px 2px 4px rgba(0,0,0,0.1); }
        nav { background: #f8f9fa; padding: 15px; margin-bottom: 20px; }
        nav a { margin-right: 15px; text-decoration: none; color: #2c3e50; font-weight: bold; }
        .mobile-menu-btn { display: none; background: #e74c3c; color: white; padding: 10px; border: none; cursor: pointer; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-menu-btn { display: block; }
            body { padding: 10px; }
        }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #e74c3c; color: white; text-decoration: none; border-radius: 5px; margin: 15px 0; font-weight: bold; }
        .highlight { background: #fffde7; padding: 5px 10px; border-left: 4px solid #ffd600; }
        table { width: 100%; border-collapse: collapse; margin: 20px 0; }
        table, th, td { border: 1px solid #ddd; }
        th, td { padding: 12px; text-align: left; }
        th { background: #f2f2f2; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .footer { margin-top: 40px; padding-top: 20px; border-top: 2px solid #eee; }
        .tag { background: #e0f7fa; padding: 5px 10px; margin: 5px; display: inline-block; border-radius: 3px; }