:root {
    --text-color: #333;
    --bg-color: #fafafa;
    --border-color: #ddd;
    --accent-color: #0066cc;
    --hover-color: #0052a3;
}

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

body {
    font-family: system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--bg-color);
}

header {
    border-bottom: 1px solid var(--border-color);
    padding: 2rem 1rem;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

nav {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1rem;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

a:hover {
    color: var(--hover-color);
    text-decoration: underline;
}

main {
    padding: 0 1rem;
    display: flex;
    justify-content: center;
}

footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 1rem;
    text-align: center;
    margin-top: 3rem;
    color: #666;
    font-size: 0.9rem;
}

main .content img {
    display: block;
    margin: 1rem auto;
    width: 50%;
}

main pre {
    min-width: 20vw;
}

pre {
    line-height: 2.5;

    white-space: pre-wrap;
    font-family: monospace;
}

pre code {
    position: absolute;
    transform: translateY(-1.2em);

    font-weight: bold;
    color: #0066cc;
}

pre h1, pre h2 {
    margin: 0;
    padding: 0;
}