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

body {
    display: flex;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: #333;
}

header {
    width: 300px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 40px 20px;
    height: 100vh;
    position: fixed;
    color: white;
}

header img { 
    width: 180px; 
    height: 180px; 
    border-radius: 50%;
    object-fit: cover; 
    display: block; 
    margin: 0 auto 20px auto;
    border: 4px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

header h1 {
    font-size: 26px;
    margin-bottom: 15px;
    text-align: center;
    font-weight: 600;
}

header p {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 25px;
}

header p a {
    color: #f5f5ff;
    text-decoration: none;
    border-bottom: 1px solid rgba(245, 245, 255, 0.5);
    transition: all 0.3s ease;
}

header p a:hover {
    color: #ffffff;
    border-bottom-color: #ffffff;
}



.social-links {
    text-align: center;
    margin-top: 20px;
}

.social-links p {
    font-size: 13px;
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.9);
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.social-icons a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.social-icons svg {
    width: 22px;
    height: 22px;
    fill: white;
}

main {
    margin-left: 300px;
    padding: 60px 40px;
    max-width: 900px;
    width: 100%;
}

section {
    margin-bottom: 50px;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

h2 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #667eea;
    padding-bottom: 10px;
    border-bottom: 2px solid #e0e0e0;
}

.section-intro {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    font-style: italic;
}

h3 {
    font-size: 18px;
    margin-top: 20px;
    margin-bottom: 10px;
    color: #555;
    font-weight: 600;
}

h3 a {
    font-size: 14px;
    color: #667eea;
    text-decoration: none;
    margin-left: 8px;
}

h3 a:hover {
    text-decoration: underline;
}

p {
    line-height: 1.7;
    margin-bottom: 15px;
}

.publication {
    padding: 15px;
    background: #f9f9f9;
    border-left: 3px solid #667eea;
    margin-bottom: 20px;
    border-radius: 4px;
}

.publication a {
    color: #667eea;
    text-decoration: none;
}

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