/* Card catalogue: reference entries filed like library index cards. */
@font-face { font-family: "Archivo"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/archivo-400.woff2") format("woff2"); }
@font-face { font-family: "Archivo"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/archivo-600.woff2") format("woff2"); }
@font-face { font-family: "Big Shoulders"; font-style: normal; font-weight: 700; font-display: swap; src: url("/fonts/big-shoulders-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/ibm-plex-mono-latin-600-normal.woff2") format("woff2"); }

:root {
  --accent: #1f4fa3;
  --paper: #f3f4f6;
  --sheet: #ffffff;
  --ink: #16191f;
  --ink-soft: #3d434e;
  --muted: #646b78;
  --rule: #d3d9e2;
  --rule-blue: #c4d3ec;
  --rule-red: #c8402f;
  --sans: "Archivo", ui-sans-serif, system-ui, sans-serif;
  --display: "Big Shoulders", "Archivo", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --max: 940px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { background: var(--paper); -webkit-text-size-adjust: 100%; }
body { margin: 0; color: var(--ink); font: 400 17px/1.7 var(--sans); }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.skip { position: absolute; left: 1rem; top: -4rem; background: var(--ink); color: #fff; padding: .5rem .8rem; z-index: 5; }
.skip:focus { top: 1rem; }
.label { font: 600 11px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin: 0 0 .4rem; }

/* masthead */
.masthead { background: var(--sheet); border-bottom: 1px solid var(--rule); box-shadow: inset 0 -3px 0 var(--accent); }
.masthead-inner { max-width: var(--max); margin: 0 auto; padding: .85rem 1.25rem 1rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .75rem 1.5rem; }
.brand { display: flex; align-items: center; gap: .7rem; color: var(--ink); text-decoration: none; }
.brand .mono { width: 34px; height: 34px; color: var(--accent); flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.domain { font: 700 24px/1 var(--display); letter-spacing: .01em; }
.role { font: 400 11px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.primary { display: flex; flex-wrap: wrap; gap: .25rem 1.1rem; font-size: 14.5px; }
.primary a { color: var(--ink-soft); text-decoration: none; padding: .15rem 0; border-bottom: 2px solid transparent; }
.primary a:hover, .primary a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }

/* layout */
.layout { max-width: var(--max); margin: 0 auto; padding: 1.25rem 1.25rem 3rem; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: .2rem; margin: 0 0 1.25rem; padding: 0; font: 400 12.5px/1.5 var(--mono); color: var(--muted); }
.crumbs li + li::before { content: "›"; margin: 0 .45rem 0 .2rem; color: var(--rule); }
.crumbs a { color: var(--muted); }
.entry { background: var(--sheet); border: 1px solid var(--rule); padding: 1.5rem 1.25rem 2rem; display: flex; flex-direction: column; }
.entry > * { order: 3; min-width: 0; }
.entry > .entry-head { order: 0; }
.entry > .brief { order: 1; }
.entry > .card { order: 2; }
.entry > .toc { align-self: flex-start; }
.entry-head { border-bottom: 1px solid var(--rule); padding-bottom: 1rem; margin-bottom: 1.25rem; }
.kicker { margin: 0; font: 600 12px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--accent); }
h1 { font: 700 clamp(34px, 6vw, 50px)/1.02 var(--display); letter-spacing: .005em; margin: .35rem 0 .6rem; text-wrap: balance; }
.dates { margin: 0; font: 400 12.5px/1.5 var(--mono); color: var(--muted); }
.dates a { color: var(--muted); }

/* in brief */
.brief { border-left: 3px solid var(--accent); background: #f7f9fc; padding: .85rem 1rem .9rem; margin: 0 0 1.5rem; }
.brief p:last-child { margin: 0; font-size: 18px; line-height: 1.6; }

/* catalogue card (signature) */
.card { position: relative; background: #fffefb; border: 1px solid #cdd3db; box-shadow: 3px 3px 0 #e2e6ec; margin: 0 0 1.5rem; padding: 0 0 1.6rem; }
.card::after { content: ""; position: absolute; left: 50%; bottom: .45rem; width: 12px; height: 12px; margin-left: -6px; border-radius: 50%; background: var(--paper); border: 1px solid #c3c9d2; }
.card-call { display: flex; justify-content: space-between; gap: .5rem; padding: .45rem .8rem .35rem; border-bottom: 2px solid var(--rule-red); font: 600 11px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-soft); background: #fffefb; }
.card-title { margin: 0; padding: .5rem .8rem .2rem; font: 700 22px/1.15 var(--display); background: #fffefb; }
.card dl { margin: 0; padding: .2rem .8rem 0; }
.card dl div { display: grid; grid-template-columns: 7.2rem 1fr; gap: .6rem; padding: .28rem 0; border-bottom: 1px solid var(--rule-blue); background: #fffefb; }
.card dt { font: 600 11px/1.6 var(--mono); letter-spacing: .04em; text-transform: uppercase; color: var(--muted); padding-top: .15rem; }
.card dd { margin: 0; font-size: 14.5px; line-height: 1.5; }

/* contents */
.toc { border: 1px solid var(--rule); padding: .8rem 1rem .6rem; margin: 0 0 1.5rem; display: inline-block; min-width: min(100%, 300px); }
.toc ol { margin: 0; padding-left: 1.4rem; font-size: 15px; line-height: 1.75; }
.toc li::marker { font: 400 12px var(--mono); color: var(--muted); }

/* body */
.body h2, .faq h2, .sources h2, .cite h2, .terms h2:not(.label) { font: 600 24px/1.25 var(--sans); margin: 2.1rem 0 .7rem; padding-top: .8rem; border-top: 1px solid var(--rule); }
.body h3, .faq h3 { font: 600 18.5px/1.35 var(--sans); margin: 1.5rem 0 .4rem; }
.body h4 { font: 600 16px/1.4 var(--sans); margin: 1.2rem 0 .3rem; }
.body p, .body li { color: var(--ink); }
.body ul, .body ol { padding-left: 1.3rem; }
.body li { margin: .25rem 0; }
code { font: 400 .88em var(--mono); background: #eef1f5; padding: .05rem .3rem; border-radius: 2px; }
pre { background: #10131a; color: #e8ecf2; padding: 1rem; overflow-x: auto; font-size: 14px; line-height: 1.55; }
pre code { background: none; padding: 0; color: inherit; }
.callout { border: 1px solid var(--rule); border-left: 3px solid var(--rule-red); padding: .7rem 1rem; margin: 1.2rem 0; background: #fcfcfd; }
.callout p { margin: 0; }
.table-wrap { overflow-x: auto; margin: 1rem 0 1.4rem; clear: both; border: 1px solid var(--rule); }
table { border-collapse: collapse; width: 100%; font-size: 15px; line-height: 1.45; }
th, td { text-align: left; vertical-align: top; padding: .55rem .7rem; border-bottom: 1px solid var(--rule); }
thead th { font: 600 11.5px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); background: #f7f8fa; border-bottom: 2px solid var(--rule-red); }
tbody th { font-weight: 600; }
tbody tr:last-child > * { border-bottom: 0; }
tr[aria-current="true"] { background: #f7f9fc; }

/* faq, terms, sources, cite */
.qa h3 { margin-top: 1.2rem; }
.qa p { margin: .2rem 0 0; }
.terms { margin-top: 2rem; }
.terms ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.terms li a { display: inline-block; font: 400 13px/1.4 var(--mono); border: 1px solid var(--rule); padding: .2rem .5rem; text-decoration: none; }
.terms li a:hover { border-color: var(--accent); }
.sources ol { padding-left: 1.4rem; font-size: 15px; }
.sources li { margin: .3rem 0; overflow-wrap: anywhere; }
.src-note { color: var(--muted); }
.cite-text { font: 400 13.5px/1.6 var(--mono); background: #f7f8fa; border: 1px dashed #b9c1cd; padding: .75rem .9rem; overflow-wrap: anywhere; margin: 0 0 .6rem; }
.cite-entity { font-size: 14.5px; color: var(--ink-soft); margin: 0; }

/* rail */
.rail { margin-top: 1.5rem; border-top: 2px solid var(--ink); padding-top: .8rem; }
.rail ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .3rem 1.5rem; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.rail a { font-weight: 600; }

/* footer */
.colophon { border-top: 1px solid var(--rule); background: var(--sheet); }
.colophon-inner { max-width: var(--max); margin: 0 auto; padding: 1.4rem 1.25rem 2rem; font-size: 14.5px; color: var(--ink-soft); }
.colophon .small { font: 400 12.5px/1.6 var(--mono); color: var(--muted); }
.colophon .small a { color: var(--muted); }

@media (min-width: 900px) {
  .entry { padding: 2.25rem 2.5rem 2.75rem; }
  .entry { display: flow-root; }
  .card { float: right; width: 310px; margin: .2rem 0 1.5rem 2rem; }
  .brief, .callout { display: flow-root; }
  .entry.wide .card { float: none; }
}
@media (max-width: 520px) {
  body { font-size: 16.5px; }
  .card dl div { grid-template-columns: 6rem 1fr; }
  .primary { font-size: 14px; gap: .2rem .9rem; }
}
@media print {
  .masthead, .rail, .colophon, .toc, .skip { display: none; }
  .entry { border: 0; }
}