body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #ff6b35; text-align: center; margin-bottom: 30px; }
        h2 { color: #4ecdc4; border-bottom: 2px solid #4ecdc4; padding-bottom: 5px; }
        h3 { color: #01a9b4; }
        .nav { background: #ff6b35; padding: 15px; display: flex; justify-content: space-between; align-items: center; }
        .nav-mobile { display: none; }
        .nav-links { display: flex; gap: 20px; }
        .nav-links a { color: white; text-decoration: none; }
        .logo { font-size: 24px; font-weight: bold; color: white; }
        .content { margin-top: 30px; }
        .download-btn, .login-btn { background: #4ecdc4; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 10px 0; }
        .img-container { text-align: center; margin: 20px 0; }
        img { max-width: 100%; height: auto; }
        .tags { margin: 20px 0; }
        .tags a { background: #eee; padding: 5px 10px; margin-right: 5px; text-decoration: none; color: #333; }
        .footer { margin-top: 50px; padding-top: 20px; border-top: 1px solid #eee; text-align: center; }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .nav-mobile { display: block; background: #ff6b35; color: white; padding: 10px; text-align: center; cursor: pointer; }
            .nav.active .nav-links { display: flex; flex-direction: column; }
        }