body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #ff4d00; text-align: center; border-bottom: 3px solid #ffcc00; padding-bottom: 10px; }
        h2 { color: #0066cc; margin-top: 30px; }
        h3 { color: #339966; }
        .logo { font-size: 28px; font-weight: bold; color: #ff4d00; text-shadow: 1px 1px 2px #ccc; }
        .nav { background: #333; padding: 10px; position: sticky; top: 0; z-index: 100; }
        .nav a { color: white; margin: 0 15px; text-decoration: none; }
        .mobile-nav-btn { display: none; background: #ff4d00; color: white; border: none; padding: 10px; cursor: pointer; }
        .content-img { max-width: 100%; height: auto; margin: 20px 0; }
        .download-btn, .login-btn { display: inline-block; background: #ff4d00; color: white; padding: 12px 25px; margin: 15px 0; text-decoration: none; border-radius: 5px; }
        .tags { margin: 20px 0; }
        .tag { background: #e0e0e0; padding: 5px 10px; margin: 0 5px; display: inline-block; }
        .footer { background: #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; }
            .nav a { display: block; padding: 10px 0; }
        }