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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    padding: 1rem;
}

header nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

aside {
    padding: 1rem;
    background-color: #f4f4f4;
    font-size: 0.9rem;
    position: fixed;
    top: 1rem;
    right: 1rem;
}

aside nav {
    flex-grow: 1;
}

aside nav ul {
    list-style-type: none;
}

aside nav ul li a {
    text-decoration: none;
    display: block;
}

main {
    padding: 1rem;
    flex-grow: 1;
}

h1 {
    font-weight: 900;
}

h2 {
    font-weight: 700;
}

h3 {
    font-weight: 500;
}

h4 {
    font-weight: 500;
}

footer {
    text-align: center;
    padding: 1rem;
    background-color: #f4f4f4;
    margin-top: auto;
}

p {
    margin-bottom: 1rem;
}

code {
    background-color: #eaeaea;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.95rem;
}