html {
    font-family: sans-serif;
    color: #444;
    box-sizing: border-box;
}

*,
*:before,
*:after {
    box-sizing: inherit;
}

body {
    max-width: 800px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

blockquote {
    background-color: #eee;
    border-left: 3px solid #555;
    margin: 1rem -1rem 1rem calc(-1rem - 3px);
    padding: 1rem;
}

ul {
    margin-top: 1.5rem;
    margin-bottom: 2rem;
    margin-left: 0;
    padding: 0;
}

li {
    padding: 0;
    margin: 0;
}

p:has(img) {
    text-align: center;
}

img {
    max-width: 80%;
}

a {
    position: relative;
}

a,
a:hover,
a:active,
a:visited {
    text-decoration: none;
}

a:before {
    content: '⇒';
    color: #999;
    font-weight: bold;
    position: absolute;
    left: -1.25rem;
}

a:has(img):before {
    content: '';
}

pre {
    margin: 1.5rem -1rem 2rem;
    background-color: #eee;
    padding: 1rem;
    overflow-x: auto;
}

article {
    line-height: 1.5rem;
}

h1 {
    margin-top: 2.5rem;
    margin-bottom: 1.5px;
    font-size: 1.3rem;
}

h2 {
    margin-top: 2.5rem;
    font-size: 1.2rem;
}

h3 {
    font-size: 1.1rem;
}

p {
    margin-bottom: 1.5rem;
}

p:nth-last-of-type(2) {
    margin-top: 2.5rem;
    margin-bottom: 2.5rem;
    opacity: 0.6;
}

p:has(a) {
    margin-top: 0rem;
    margin-bottom: 0.25rem;
}

details:not([open]) summary,
details:not([open]) summary a {
    color: gray;
}

details summary a:before {
    display: none;
}

dl dt {
    font-weight: bold;
}

dl dt:not(:first-child) {
    margin-top: 0.5rem;
}

@media (prefers-color-scheme: dark) {
    html {
        background-color: #111;
        color: #eee;
    }

    blockquote {
        background-color: #000;
    }

    pre {
        background-color: #222;
    }

    a,
    a:hover,
    a:active {
        color: #0087bd;
    }

    a:visited {
        color: #333399;
    }
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

input {
    display: block;
    border: 1px solid #888;
    padding: 0.375rem;
    line-height: 1.25rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    width: 100%;
}

input:focus {
    outline: 0;
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}