:root {
        --line: 1.33333rem;
        --pico: 0.91667rem;
    
        --text: "Charter", "Bitstream Charter", "Baskerville",
                "Cambria", "Georgia", serif;
        --sans: "Helvetica Neue", "Nimbus Sans", "Arial", "Univers", sans-serif;
        --caps: "Sitka", "Constantia", "Georgia",
                "DejaVu Serif", "Nimbus Roman", "Times New Roman", serif;
    
        --high: #1af;
        --mark: #9df;
        --pale: #cef;
        --dark: #333;
        
        font-size: 16pt;
    }
    
    html {
        font-family: serif;
        font-size: 16pt;
    }
    
    body {
        margin: 0;
        padding: 0;
        line-height: var(--line);
    }

    article {
        width: 32em;
        margin: calc(2 * var(--line)) auto;
        padding: 0 var(--line) 0 calc(3 * var(--line));
        line-height: var(--line);

        /**
        background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='6' height='8'%3E%3Cpath d='M0,6 h6' stroke='%23def'/%3E%3C/svg%3E");
        background-size: 1.0rem var(--line);
        **/

        font-family: var(--text);
    }
    
    header {
        float: left;
        clear: left;
        
        max-width: 16rem;
        margin: 0;
        margin-right: var(--line);
        margin-left: calc(-4 * var(--line));
        padding: var(--line);
        
        text-align: center;
    }
    
    h1 {
        font-family: "Bahnschrift Light Condensed", "Bahnschrift",
            "Ubuntu", "Ubuntu Narrow", "PT Sans", "PT Sans Narrow",
            sans-serif;
        font-stretch: 75%;
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: 0.04em;
    }
    
    h1 > span {
        letter-spacing: -0.02em;
    }
    
    header > h1 {
        font-size: 3.0rem;
        line-height: calc(2 * var(--line));
        margin: var(--line) 0;
        padding: 0;
        color: var(--high);
    }
    
    h2, header > p {
        font-family: var(--caps);
        font-size: 0.8333rem;
        text-transform: uppercase;
        letter-spacing: 0.18em;
        font-weight: 700;
    }
    
    h2 {
        margin: var(--line) 0 0;
    }
    
    p {
        margin: 0 0 var(--line);
    }
    
    p.cmd {
        margin: 0 0 0;
        font-style: italic;
        color: slategray;
    }
    
    p.cmd::before {
        content: ">\00a0";
        color: black;
        font-style: normal;
    }
    
    p.br {
        margin: 0 0 0;
    }
    
    p.attr {
        text-align: right;
    }
    
    a {
        text-decoration: none;
        font-weight: 700;
        color: var(--high);
    }
    
    a:hover {
        text-decoration: underline;
    }
    
    a:active,
    a:focus {
        color: white;
        background-color: black;
        outline: solid 0.08em black;
        border-radius: 0.08em;
    }
    
    mark {
        background-color: var(--mark);
        font-weight: bold;
        padding: 0 0.1em;
    }
    
    abbr {
        font-size: 0.95em;
        letter-spacing: 0.08em;
    }
    
    code {
        font-size: 0.8333em;
    }
    
    cmd {
        font-style: italic;
        color: slategray;
    }
    
    blockquote {
        margin: var(--line);
        font-size: 0.8333em;
        color: #333;
    }
    
    div.juxta {
        margin: var(--line) 0;
        display: flex;
    }
    
    div.juxta > blockquote {
        margin: 0;        
    }
    
    div.juxta > blockquote:first-child {
        margin: 0 var(--line) 0 0;
        padding: 0 var(--line) 0 0;
        border-right: var(--mark) dotted 0.25em;
    }
    
    figure {
        padding: 0;
        margin: var(--line) 0;
    }
    
    figure img {
        width: 100%;
    }
    
    ul, ol {
        margin: var(--line) 0;
    }
    
    ul.ellipse li::marker {
        content: "...\00a0";
        color: inherit;
    }
    
    hr {
        margin: var(--line) auto;
        width: calc(4 * var(--line));
        height: var(--line);
        border: none;
    }

    div.bi {
        margin: 0;
        padding: 0;
        overflow: hidden;
        width: 32rem;
    }

    div.bi > div {
        position: relative;
        overflow: hidden;
        display: flex;
        width: 64rem;
        left: 0rem;
        transition: left 0.7s;
    }

    div.bi > input:checked ~ div {
        left: -32rem;
    }
    
    div.bi > div > div {
        width: 32rem;
        overflow: hidden;
    }

    div.bi > input {
        display: none;
    }
    
    div.bi > label {
        float: right;
    }
    
    div.bi > label > span {
        font-size: 0.6667em;
        font-family: sans-serif;
        min-width: var(--line);
        padding: 0.05rem 0.2rem;
        border: 1px var(--high) solid;
        cursor: pointer;
    }
    
    div.bi > input ~ label > span,
    div.bi > input:checked ~ label > span + span {
        background-color: var(--high);
        color: white;
    }
    
    div.bi > input ~ label > span + span,
    div.bi > input:checked ~ label > span {
        background-color: white;
        color: #333;
    }
    
    div.bi blockquote {
        margin-top: 0;
    }

    #wide-header {
        font-family: var(--sans);
        padding: 0;
        width: 100%;
        height: 5em;
        color: #999;
        background: var(--dark);
        border-bottom: solid 0.5em var(--high);
    }

    #header {
        margin: 0 auto;
        padding-bottom: 0;
        padding-right: 12rem;
        padding-left: 2rem;
        width: 32rem;
    }

    #breadcrumb {
        margin: 0;
        padding: 0;
        padding-top: 4em;
        color: #999;
        font-size: var(--pico);
    }

    #breadcrumb a {
        color: #ccc;
        font-weight: 400;
    }

    #breadcrumb a:link,
    #breadcrumb a:visited {
        color: #ccc;
    }

    #breadcrumb a:hover,
    #breadcrumb a:active {
        background-color: var(--high);
        color: white;
    }

    #title {
        margin: 0;
        padding: 1.0em 0 0 0;
        overflow: hidden;
    }

    #header a {
        text-decoration: none;
        border: none;
        color: #999;
    }

    #header a span {
        color: #999;
    }
    
    @media print {
        body {
            font-size: calc(2.67vw);
        }
    
        header {
            margin-left: -2rem;
        }
    
        div.bi > label {
            display: none;
        }
        
        #wide-header {
            display: none;
        }
    }