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

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

header,
main,
footer {
    max-width: 700px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding-top: 40px;
}

.subtitle {
    color: #666;
    margin-bottom: 20px;
}

nav a {
    margin: 0 10px;
    color: #2563eb;
    text-decoration: none;
}

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

section {
    background: white;
    padding: 24px;
    margin-bottom: 20px;
    border-radius: 8px;
    border: 1px solid #e5e5e5;
}

h2 {
    margin-bottom: 16px;
    font-size: 22px;
}

h3 {
    margin-bottom: 8px;
    font-size: 18px;
}

img {
    border-radius: 50%;
    margin-bottom: 16px;
}

ul {
    padding-left: 20px;
}

.card {
    border: 1px solid #e5e5e5;
    padding: 16px;
    margin-bottom: 12px;
    border-radius: 6px;
}

.card a {
    color: #2563eb;
    text-decoration: none;
}

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

#contact a {
    color: #2563eb;
    text-decoration: none;
    margin-right: 12px;
}

footer {
    text-align: center;
    color: #888;
    font-size: 14px;
    padding-bottom: 40px;
}