:root {
            --primary-color: #4a6fa5;
            --secondary-color: #166088;
            --light-bg: #f8f9fa;
            --dark-text: #333;
            --light-text: #f8f9fa;
            --dark-bg: #1a1a1a;
            --dark-card: #2d2d2d;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: var(--light-bg);
            color: var(--dark-text);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        header {
            background-color: var(--primary-color);
            color: white;
            padding: 1.5rem;
            text-align: center;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

        .container {
            max-width: 1000px;
            margin: 2rem auto;
            padding: 0 1.5rem;
            flex: 1;
        }

        .hero {
            text-align: center;
            padding: 2rem 1rem;
            margin-bottom: 2rem;
        }

        .hero h1 {
            font-size: 2.2rem;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }

        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
        }

        .card {
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            padding: 2rem;
            margin-bottom: 2rem;
        }

        h2 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            font-size: 1.8rem;
            border-bottom: 2px solid var(--primary-color);
            padding-bottom: 0.5rem;
        }

        h3 {
            color: var(--secondary-color);
            margin: 1.5rem 0 1rem;
            font-size: 1.4rem;
        }

        p {
            margin-bottom: 1rem;
            font-size: 1.1rem;
            line-height: 1.8;
        }

        ul,
        ol {
            padding-right: 1.5rem;
            margin-bottom: 1.5rem;
        }

        li {
            margin-bottom: 0.8rem;
            font-size: 1.1rem;
        }

        .feature-box {
            display: flex;
            align-items: center;
            background: #f0f8ff;
            border-radius: 8px;
            padding: 1.5rem;
            margin: 1.5rem 0;
        }

        .feature-icon {
            font-size: 2.5rem;
            margin-left: 1.5rem;
            color: var(--primary-color);
        }

        .feature-text {
            flex: 1;
        }

        .privacy-alert {
            background-color: #fff3e0;
            border-right: 5px solid #ff6b35;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }

        .privacy-alert h3 {
            color: #ff6b35;
        }

        .steps {
            counter-reset: step-counter;
        }

        .step {
            position: relative;
            padding-right: 3rem;
            margin-bottom: 2rem;
        }

        .step:before {
            counter-increment: step-counter;
            content: counter(step-counter);
            position: absolute;
            right: 0;
            top: 0;
            width: 2.5rem;
            height: 2.5rem;
            background-color: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .screenshot {
            max-width: 100%;
            height: auto;
            border: 1px solid #ddd;
            border-radius: 8px;
            margin: 1.5rem 0;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
        }

        footer {
            text-align: center;
            padding: 1.5rem;
            background-color: var(--primary-color);
            color: white;
            margin-top: auto;
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 1.8rem;
            }

            .hero p {
                font-size: 1rem;
            }

            .card {
                padding: 1.5rem;
            }

            .feature-box {
                flex-direction: column;
                text-align: center;
            }

            .feature-icon {
                margin: 0 0 1rem 0;
            }
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        nav ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            justify-content: center;
        }

        nav ul li {
            margin: 5px 600px;
        }

        nav a {
            color: rgb(0, 0, 0);
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem;
            border-radius: 4px;
            transition: background-color 0.3s;
        }

        nav a:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }