body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { background: linear-gradient(135deg, #FF6B6B, #4ECDC4); color: white; padding: 20px; border-radius: 10px; margin-bottom: 30px; }
        h1 { font-size: 2.5em; margin: 0; }
        .logo { font-weight: bold; font-size: 2.8em; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); }
        nav { margin-top: 15px; }
        nav a { color: white; margin-right: 15px; text-decoration: none; font-weight: bold; }
        .mobile-menu-btn { display: none; background: rgba(255,255,255,0.2); border: none; color: white; padding: 8px 15px; border-radius: 5px; cursor: pointer; }
        .content { display: flex; flex-wrap: wrap; gap: 30px; }
        .main-content { flex: 3; }
        .sidebar { flex: 1; background: #f5f5f5; padding: 20px; border-radius: 10px; }
        img { max-width: 100%; height: auto; border-radius: 10px; margin: 15px 0; }
        .download-btn, .login-btn { display: inline-block; background: #4CAF50; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; font-weight: bold; margin: 10px 0; }
        .login-btn { background: #2196F3; }
        footer { margin-top: 50px; padding: 20px; background: #333; color: white; border-radius: 10px; }
        .tags { margin: 20px 0; }
        .tag { display: inline-block; background: #666; color: white; padding: 5px 10px; border-radius: 20px; margin-right: 8px; margin-bottom: 8px; font-size: 0.9em; }
        @media (max-width: 768px) {
            .mobile-menu-btn { display: block; }
            nav { display: none; margin-top: 15px; }
            nav.active { display: block; }
            nav a { display: block; margin: 8px 0; }
            .content { flex-direction: column; }
        }