:root {
    color-scheme: light dark;
    --background: #faf9fc;
    --text: #29252f;
    --link: #67469d;
    --rule: #ded8e7;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: #17151b;
        --text: #eeeaf2;
        --link: #c9afff;
        --rule: #403947;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 1rem;
    line-height: 1.65;
}

main {
    width: min(100% - 2.5rem, 44rem);
    margin-inline: auto;
    padding-block: 3rem 5rem;
}

h1,
h2,
h3 {
    line-height: 1.2;
}

h1 {
    margin-block: 0 1.5rem;
}

h2 {
    margin-block: 2.75rem 1rem;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid var(--rule);
}

h3 {
    margin-block: 2rem 1rem;
}

p,
dl {
    margin-block: 1rem;
}

ul {
    margin-block: 0.75rem;
}

li + li {
    margin-top: 0.25rem;
}

a {
    color: var(--link);
    text-underline-offset: 0.15em;
}

a:hover {
    text-decoration-thickness: 0.12em;
}

a:focus-visible {
    outline: 2px solid var(--link);
    outline-offset: 3px;
}

img {
    display: block;
    width: min(100%, 18rem);
    height: auto;
    border-radius: 0.5rem;
}

dl div {
    display: flex;
    gap: 0.4rem;
}

dt {
    font-weight: 700;
}

dt::after {
    content: ":";
}

dd {
    margin: 0;
}

.color-square {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border-radius: 0.25rem;
}