* {
            margin: 0;
            padding: 0;
            box-sizing: border-box
        }

        body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f5f5
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px
        }

        header {
            background: linear-gradient(135deg, #ff6b6b, #ee5a6f);
            color: white;
            padding: 30px 0;
            text-align: center;
            margin-bottom: 20px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1)
        }

        h1 {
            font-size: 2.5em;
            margin-bottom: 10px
        }

        h2 {
            color: #ff6b6b;
            margin: 30px 0 20px;
            font-size: 1.8em;
            border-bottom: 2px solid #ff6b6b;
            padding-bottom: 10px
        }

        h3 {
            color: #555;
            margin: 20px 0 15px;
            font-size: 1.4em
        }

        p {
            margin-bottom: 15px;
            text-align: justify
        }

        .feature-list {
            list-style: none;
            margin: 20px 0
        }

        .feature-list li {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
            display: flex;
            align-items: center
        }

        .feature-list li:before {
            content: "✓";
            color: #4CAF50;
            font-weight: bold;
            margin-right: 10px
        }

        .software-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin: 20px 0
        }

        .software-card {
            background: #f9f9f9;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            border: 1px solid #eee;
            transition: all 0.3s ease;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05)
        }

        .software-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15)
        }

        .software-card img {
            max-width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 4px;
            margin-bottom: 15px
        }

        .software-card h4 {
            margin-bottom: 10px;
            color: #333
        }

        .video-container {
            position: relative;
            padding-bottom: 56.25%;
            height: 0;
            overflow: hidden;
            margin: 20px 0;
            border-radius: 8px
        }

        .video-container iframe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            border: none
        }

        .usage-steps {
            counter-reset: step;
            margin: 20px 0
        }

        .usage-steps li {
            list-style: none;
            margin-bottom: 20px;
            position: relative;
            padding-left: 50px
        }

        .usage-steps li:before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            left: 0;
            top: 0;
            width: 30px;
            height: 30px;
            background: #ff6b6b;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold
        }

        .faq-item {
            margin-bottom: 15px;
            border-bottom: 1px solid #eee;
            padding-bottom: 15px
        }

        .faq-question {
            font-weight: bold;
            color: #333;
            margin-bottom: 5px;
            cursor: pointer
        }

        .faq-answer {
            color: #666;
            display: none
        }

        .faq-answer.active {
            display: block
        }

        .testimonial {
            background: #f9f9f9;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 15px;
            border-left: 4px solid #ff6b6b
        }

        .testimonial-author {
            font-style: italic;
            color: #666;
            margin-top: 10px;
            text-align: right
        }

        .download-btn {
            background: linear-gradient(135deg, #4CAF50, #45a049);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 5px;
            font-size: 14px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 15px
        }

        .download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2)
        }

        @keyframes pulse {
            0% {
                transform: scale(1);
            }

            50% {
                transform: scale(1.05);
            }

            100% {
                transform: scale(1);
            }
        }

        .section {
            background: white;
            padding: 30px;
            margin-bottom: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.6s ease
        }

        .section.visible {
            opacity: 1;
            transform: translateY(0)
        }

        .keyword-highlight {
            font-weight: bold;
            color: #ff6b6b
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 15px;
            margin: 20px 0
        }

        .feature-item {
            background: #f8f9fa;
            padding: 15px;
            border-radius: 8px;
            border-left: 4px solid #ff6b6b
        }

        footer {
            background: #333;
            color: white;
            text-align: center;
            padding: 20px 0;
            margin-top: 40px
        }

        @media (max-width:768px) {
            .container {
                padding: 10px
            }

            h1 {
                font-size: 2em
            }

            h2 {
                font-size: 1.5em
            }

            .section {
                padding: 20px
            }

            nav {
                display: flex;
                flex-wrap: wrap;
                justify-content: center
            }

            nav a {
                margin: 5px;
                display: inline-block
            }
        }