body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 2px solid #FFD700; }
        .logo { font-size: 28px; font-weight: bold; color: #FF4500; }
        nav ul { display: flex; list-style: none; gap: 20px; }
        nav ul li a { text-decoration: none; color: #333; }
        .mobile-menu-btn { display: none; background: #FFD700; border: none; padding: 8px 12px; border-radius: 5px; }
        h1 { color: #FF4500; font-size: 2.2em; margin-bottom: 20px; }
        h2 { color: #FF8C00; font-size: 1.8em; margin: 30px 0 15px; }
        h3 { color: #FFA500; font-size: 1.4em; margin: 25px 0 10px; }
        .btn { display: inline-block; padding: 12px 25px; background: #4CAF50; color: white; text-decoration: none; border-radius: 5px; margin: 10px 0; }
        .btn:hover { background: #45a049; }
        .download-btn { background: #2196F3; }
        .login-btn { background: #FF9800; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid #ddd; }
        .tags { margin: 20px 0; }
        .tag { display: inline-block; background: #f0f0f0; padding: 5px 10px; margin-right: 5px; border-radius: 3px; }
        @media (max-width: 768px) {
            nav ul { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; background: white; width: 100%; padding: 10px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
            nav ul.active { display: flex; }
            .mobile-menu-btn { display: block; }
        }