body { font-family: 'Segoe UI', Arial, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 2.5em; font-weight: bold; color: #FF6B35; text-shadow: 2px 2px 4px rgba(0,0,0,0.2); margin-bottom: 20px; }
        nav { background: #FF6B35; padding: 15px; border-radius: 8px; margin-bottom: 30px; }
        nav ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; justify-content: space-around; }
        nav li { margin: 5px; }
        nav a { color: white; text-decoration: none; font-weight: bold; }
        .mobile-menu { display: none; background: #FF6B35; color: white; border: none; padding: 10px; margin-bottom: 15px; width: 100%; }
        h1 { color: #2C3E50; border-bottom: 3px solid #FF6B35; padding-bottom: 10px; }
        h2 { color: #E74C3C; margin-top: 30px; }
        h3 { color: #3498DB; }
        .download-btn, .login-btn { background: #2ECC71; color: white; padding: 12px 25px; border: none; border-radius: 5px; font-weight: bold; margin: 15px 0; display: inline-block; }
        .login-btn { background: #3498DB; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        .tag-cloud { margin: 30px 0; }
        .tag { background: #F39C12; color: white; padding: 5px 10px; margin: 5px; border-radius: 20px; display: inline-block; }
        footer { margin-top: 50px; padding: 20px; background: #2C3E50; color: white; border-radius: 8px; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-menu { display: block; }
            .responsive-nav { display: flex; flex-direction: column; }
        }