body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #e67e22; font-size: 2.5em; border-bottom: 3px solid #e67e22; padding-bottom: 10px; }
        h2 { color: #2980b9; font-size: 1.8em; margin-top: 30px; }
        h3 { color: #27ae60; font-size: 1.4em; }
        .logo { font-size: 2em; font-weight: bold; color: #e67e22; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
        .nav { display: flex; justify-content: space-around; background: #333; padding: 15px; margin-bottom: 30px; }
        .nav a { color: white; text-decoration: none; font-weight: bold; }
        .mobile-nav-btn { display: none; background: #e67e22; color: white; border: none; padding: 10px; margin: 10px; }
        .download-btn, .login-btn { display: inline-block; background: #27ae60; color: white; padding: 12px 25px; margin: 15px 0; border-radius: 5px; text-decoration: none; font-weight: bold; }
        .login-btn { background: #2980b9; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        .tags { margin: 20px 0; }
        .tags a { background: #f1c40f; color: #333; padding: 5px 10px; margin: 5px; border-radius: 3px; text-decoration: none; }
        .footer { margin-top: 50px; padding: 20px; background: #333; color: white; text-align: center; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; display: none; }
            .nav.active { display: flex; }
            .mobile-nav-btn { display: block; }
        }