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    <title>John Doe's Personal Website</title>
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    <style>
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            width: 100%;
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            z-index: 1000;
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        nav ul {
            display: flex;
            justify-content: center;
            list-style: none;
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        nav ul li {
            margin: 0 1.5rem;
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        nav a {
            color: white;
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            font-weight: 500;
            transition: color 0.3s;
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        nav a:hover {
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        .section {
            padding: 5rem 2rem;
            min-height: 100vh;
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        .container {
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        h1, h2, h3 {
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        /* CV Styles */

        .cv-item {
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            background: var(--light-gray);
            padding: 1.5rem;
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        /* Tech Notes Styles */
        
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            padding-left: 1rem;
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        /* Contact Styles */

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            text-align: center;
            margin-top: 2rem;
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        .contact-item {
            margin: 1.5rem 0;
            font-size: 1.2rem;
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        .contact-item a {
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            transition: color 0.3s;
            display: inline-block;
            padding: 0.5rem 1rem;
            border: 2px solid var(--secondary-color);
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        .contact-item a:hover {
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        .contact-item i {
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    </style>
</head>
<body>
    <nav>
        <ul>
            <li><a href="#cv" onclick="showSection('cv')">CV</a></li>
            <li><a href="#tech-notes" onclick="showSection('tech-notes')">Tech Notes</a></li>
            <li><a href="#contact" onclick="showSection('contact')">Contact</a></li>
        </ul>
    </nav>

    <!-- CV Section -->
    <section id="cv" class="section active">
        <div class="container">
            <h1>John Doe - Curriculum Vitae</h1>
            
            <div class="cv-item">
                <h2>Education</h2>
                <h3>PhD in Computer Science</h3>
                <p>Stanford University | 2015-2019</p>
                <p>Thesis: Advanced Algorithms for Distributed Systems</p>
            </div>

            <div class="cv-item">
                <h2>Experience</h2>
                <h3>Senior Software Engineer</h3>
                <p>Tech Corp Inc. | 2020-Present</p>
                <ul>
                    <li>Led development of distributed systems</li>
                    <li>Managed team of 15 developers</li>
                    <li>Implemented machine learning pipelines</li>
                </ul>
            </div>

            <div class="cv-item">
                <h2>Skills</h2>
                <ul>
                    <li>Python, JavaScript, Go</li>
                    <li>Machine Learning</li>
                    <li>Distributed Systems</li>
                    <li>Cloud Architecture</li>
                </ul>
            </div>
        </div>
    </section>

    <!-- Tech Notes Section -->
    <section id="tech-notes" class="section">
        <div class="container">
            <h1>Technical Notes</h1>
            
            <div class="tech-note">
                <h2>Machine Learning Basics</h2>
                <p>The fundamental equation for linear regression:</p>
                <p>\[ h_\theta(x) = \theta_0 + \theta_1 x_1 + \theta_2 x_2 + \cdots + \theta_n x_n \]</p>
            </div>

            <div class="tech-note">
                <h2>Quantum Computing Basics</h2>
                <p>Qubit state representation:</p>
                <p>\[ |\psi\rangle = \alpha|0\rangle + \beta|1\rangle \]</p>
                <p>Where \( \alpha \) and \( \beta \) are complex numbers satisfying \( |\alpha|^2 + |\beta|^2 = 1 \).</p>
            </div>
        </div>
    </section>

    <!-- Contact Section -->
    <section id="contact" class="section">
        <div class="container">
            <h1>Contact Me</h1>
            
            <div class="contact-info">
                <div class="contact-item">
                    <i class="fas fa-envelope"></i>
                    <a href="mailto:john.doe@email.com">john.doe@email.com</a>
                </div>
                
                <div class="contact-item">
                    <i class="fab fa-github"></i>
                    <a href="https://github.com/johndoe" target="_blank">GitHub Profile</a>
                </div>
            </div>
        </div>
    </section>

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