:root {
    color-scheme: light dark;
}
html {
    font-size: 100%;
}
body {
    margin: 0 auto;
    padding: 0;
    max-width: 650px;
    font-family: system-ui, sans-serif;
    font-weight: normal;
}
main {
    margin: 0 1rem;
}
body > header {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    color: ButtonText;
    background-color: ButtonFace;
    gap: 0.5rem 1rem;
    flex-wrap: wrap;
}
header nav {
    display: inline-block;
}
section header {
    font-style: italic;
}
nav ul {
    list-style-type: none;
    border-left: 1px solid ButtonText;
    margin: 0;
    padding: 0;
}
nav ul li {
    display: inline-block;
    border-right: 1px solid ButtonText;
    padding: 0 10px;
    margin: 0;
}
nav ul li a,
nav ul li a:visited {
    color: ButtonText;
}
li {
    margin-left: 1rem;
}
p {
    margin: 1rem 0;
    line-height: 1.5rem;
}
sup {
    font-size: .75rem;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
    top: -0.5em;
}
img {
    width: 100%;
    height: auto;
}
figure {
    margin: 1rem 4rem;
}
aside {
    color: ButtonText;
    padding: 1rem;
    border: 1px solid ButtonText;
    background-color: ButtonFace;
    font-style: italic;
}
.footnotes {
    font-size: smaller;
}
.footnotes li {
    margin-left: 0;
}