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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
}

.top-nav {
    background-color: #2c3e50;
    padding: 15px 0;
    text-align: center;
}

.top-nav nav a {
    color: white;
    text-decoration: none;
    margin: 0 20px;
    font-size: 16px;
}

.top-nav nav a:hover {
    text-decoration: underline;
}

.sidebar {
    width: 300px;
    padding: 40px 30px;
    background-color: #f8f9fa;
    min-height: 100vh;
    position: sticky;
    top: 0;
}

.profile-image {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
}

.sidebar h1 {
    font-size: 28px;
    margin-bottom: 10px;
    color: #2c3e50;
}

.subtitle {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
}

.contact-info {
    margin-top: 20px;
}

.contact-info p {
    margin: 10px 0;
    font-size: 14px;
}

.contact-info a {
    color: #3498db;
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

.content {
    flex: 1;
    padding: 40px 60px;
    max-width: 800px;
}

.content h1 {
    font-size: 32px;
    margin-bottom: 30px;
    color: #2c3e50;
}

.content h2 {
    font-size: 24px;
    margin-top: 40px;
    margin-bottom: 20px;
    color: #2c3e50;
}

.content p {
    margin-bottom: 15px;
}

.content ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.content li {
    margin-bottom: 15px;
}

.content a {
    color: #3498db;
    text-decoration: none;
}

.content a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        position: relative;
        text-align: center;
    }
    
    .content {
        padding: 30px 20px;
    }
}