body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    border-bottom: 1px solid #eee;
    padding-bottom: 1rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.layout {
    display: flex;
    gap: 3rem;
}

nav {
    flex: 1;
    min-width: 200px;
}

main {
    flex: 3;
}

ul { list-style: none; padding: 0; }
li { margin-bottom: 0.5rem; }
a { color: #0076ff; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Markdown specific styles */
main img { max-width: 100%; }
code { background: #f4f4f4; padding: 0.2rem 0.4rem; border-radius: 3px; }