body { font-family: 'Segoe UI', Arial, sans-serif; line-height: 1.6; color: #333; margin: 0; padding: 0; background-color: #f5f5f5; }
        header { background-color: #1a3e72; color: white; padding: 15px; text-align: center; position: sticky; top: 0; }
        .logo { font-size: 24px; font-weight: bold; }
        nav a { color: white; margin: 0 10px; text-decoration: none; }
        .mobile-menu { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-menu { display: block; background: #0d2b5e; padding: 10px; text-align: center; }
            .mobile-menu button { background: none; border: none; color: white; font-size: 18px; }
        }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #1a3e72; border-bottom: 2px solid #ff9900; padding-bottom: 10px; }
        h2 { color: #0d2b5e; margin-top: 30px; }
        h3 { color: #2c5aa0; }
        .download-btn, .login-btn { 
            display: inline-block; 
            padding: 12px 25px; 
            margin: 15px 0; 
            background-color: #ff9900; 
            color: white; 
            text-decoration: none; 
            border-radius: 5px; 
            font-weight: bold; 
        }
        .download-btn:hover, .login-btn:hover { background-color: #e68a00; }
        .highlight { background-color: #fff8e1; padding: 15px; border-left: 4px solid #ff9900; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        footer { background-color: #1a3e72; color: white; text-align: center; padding: 20px; margin-top: 30px; }
        .tags { margin: 20px 0; }
        .tag { background-color: #2c5aa0; color: white; padding: 5px 10px; margin: 0 5px; border-radius: 15px; display: inline-block; }