:root {
  color-scheme: dark;

  --bg:        #131313;
  --bg-inset:  #1e1e1e;
  --ink:       #e6e6e6;
  --ink-soft:  #b6b6b6;
  --muted:     #7c7c7c;
  --accent:    #f2f2f2;
  --accent-dim:#bdbdbd;
  --rule:      #333333;
  --logo:      #e08055;

  --measure:   40rem;
  --gutter:    2rem;

  --serif: Georgia, 'Times New Roman', 'Nimbus Roman', 'Liberation Serif', serif;
  --mono:  ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;

  padding: clamp(2rem, 6vw, 5rem) var(--gutter) 4rem;
}

::selection { background: var(--accent); color: var(--bg); }

a {
  color: var(--accent);
  text-decoration: none;

  border-bottom: 1px solid var(--rule);
  transition: border-color 120ms ease, color 120ms ease;
}
a:hover { color: var(--accent-dim); border-bottom-color: currentColor; }
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

a.ext,
a[href^="http"] {
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
}
a.ext:hover,
a[href^="http"]:hover {
  color: var(--accent-dim);
  border-bottom-color: currentColor;
}
a.ext::after,
a[href^="http"]::after {
  content: "";
  display: inline-block;
  width: 0.55em; height: 0.55em;
  vertical-align: middle;
  margin-left: 0.14em;
  background-image: url(icons/arrow-ne.svg);
}

a.int::after {
  content: "";
  display: inline-block;
  width: 0.55em; height: 0.55em;
  margin-left: 0.14em;
  vertical-align: middle;
  background-image: url(icons/ref.svg);
}

.wip {
  color: var(--muted);
  cursor: not-allowed;
  border-bottom: 1px dotted var(--rule);
}
.wip::after {
  content: "";
  display: inline-block;
  height: 0.58em; width: auto;
  aspect-ratio: 886 / 767;
  vertical-align: middle;
  margin-left: 0.16em;
  background-image: url(icons/warn.svg);
}

h1, h2, h3 { font-weight: 400; line-height: 1.2; }

.muted { color: var(--muted); }

.mark, .rule,
ul.categories .cat-icon, .ico,
a.int::after, a.ext::after, a[href^="http"]::after, .wip::after {
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}

.mark {
  display: inline-block;
  width: 1em; height: 1em;
  background-image: url(icons/mark.svg);
}

.ico-tech    { background-image: url(icons/tech.svg); }
.ico-dn      { background-image: url(icons/arrow-dn.svg); }
.ico-disc    { background-image: url(icons/disc.svg); }
.ico-diamond { background-image: url(icons/diamond.svg); }
.ico-ext     { background-image: url(icons/arrow-ne.svg); aspect-ratio: 1; }
.ico-ref     { background-image: url(icons/ref.svg);      aspect-ratio: 1; }
.ico-warn    { background-image: url(icons/warn.svg);     aspect-ratio: 886 / 767; }

.ico {
  display: inline-block;
  height: 0.8em; width: auto;
  vertical-align: middle;
}

.site-head,
main,
.site-foot { max-width: var(--measure); margin-inline: auto; }

.site-head { margin-bottom: 2.5rem; }

.site-title {
  display: flex;
  align-items: center;
  gap: 0.4ch;
  font-size: clamp(2.4rem, 7vw, 3.4rem);
  letter-spacing: -0.01em;
  margin: 0 0 0.35rem;
}

.site-title .mark { width: 0.62em; height: 0.62em; }

.tagline {
  margin: 0;
  color: var(--ink-soft);
  font-style: italic;
  font-size: 1.05rem;
  max-width: 34rem;
}

main > section { margin: 0; }

h2 {
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.9rem;
}

.about p {
  margin: 0 0 1.1rem;
  text-align: justify;
  hyphens: auto;
}
.about p:last-child { margin-bottom: 0; }
.about strong { font-weight: 700; }

.rule {
  display: block;
  width: 1.4rem; height: 1.4rem;
  margin: 3rem auto;
  background-image: url(icons/star.svg);
  opacity: 0.85;
}

.motto {
  text-align: center;
  font-style: italic;
  color: var(--ink-soft);
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  margin: 0;
}

.index { margin-top: 3.6rem; }

ul.categories { list-style: none; margin: 0; padding: 0; }

ul.categories li {
  margin: 0 0 0.5rem;
  line-height: 1.4;
}

ul.categories li {
  display: flex;
  align-items: center;
  gap: 0.7ch;
}
ul.categories .cat-icon {
  flex: none;
  width: 0.9em; height: 0.9em;
}

ul.categories .gloss {
  color: var(--muted);
  font-size: 0.92rem;
}

.site-foot {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  margin-top: 3.5rem;
}
.site-foot .foot-rule {
  flex: 1;
  height: 0;
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0;
}
.site-foot .foot-logo {

  width: 0.98rem; height: 0.98rem;
}

.site-head.sub {
  margin-bottom: 2.2rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--rule);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.4ch;
  color: var(--ink);
  font-size: 1.5rem;
  border-bottom: 0;
}

.brand .mark { width: 0.62em; height: 0.62em; }
.brand:hover { color: var(--ink); }

nav.cats {
  margin-top: 0.7rem;
  line-height: 1.9;
}
nav.cats a { color: var(--muted); border-bottom: 0; }
nav.cats a:hover { color: var(--accent-dim); }
nav.cats a.here { color: var(--accent); }
nav.cats a:not(:last-child)::after {
  content: "·";
  color: var(--rule);
  margin: 0 0.5rem;
}

.cat-head { margin-bottom: 1.8rem; }
.cat-head h1 {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  margin: 0 0 0.25rem;
}
.cat-desc {
  margin: 0;
  color: var(--muted);
  font-style: italic;
}

ul.listing { list-style: none; margin: 0; padding: 0; }
ul.listing li {
  display: flex;
  align-items: baseline;
  gap: 0.6ch;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule);
}
ul.listing .sum { color: var(--ink-soft); flex: 1; }
ul.listing time { color: var(--muted); font-size: 0.9rem; white-space: nowrap; }

ul.listing.flat li { border-bottom: 0; padding: 0.35rem 0; }

.empty {
  color: var(--muted);
  font-style: italic;
  padding: 1.4rem 0;
}

body.page-article .site-head,
body.page-article main,
body.page-article .site-foot { max-width: 52rem; }

.article > * { max-width: 38rem; }

.article-head { max-width: 38rem; margin-bottom: 2.2rem; }

.crumb {
  margin: 0 0 0.5rem;
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.crumb a { color: var(--ink-soft); border-bottom: 0; }
.crumb a:hover { color: var(--accent); }
.article-head h1 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  letter-spacing: -0.01em;
  margin: 0 0 0.45rem;
}
.article-meta { margin: 0; color: var(--muted); font-style: italic; }

.article p {
  margin: 0 0 1.15rem;
  text-align: justify;
  hyphens: auto;
}
.article p.lead {
  font-size: 1.12rem;
  color: var(--ink-soft);
  font-style: italic;
  text-align: left;
  hyphens: none;
}
.article h2 {
  color: var(--ink);
  text-transform: none;
  letter-spacing: -0.005em;
  font-size: 1.55rem;
  font-weight: 700;
  margin: 2.4rem 0 0.8rem;
}

.article :not(pre) > code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-inset);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}
.article pre {
  max-width: 38rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  line-height: 1.5;
  background: var(--bg-inset);
  padding: 1rem 1.1rem;
  border-radius: 4px;
  overflow-x: auto;
}

.sn { }
.sn-toggle { display: none; }

.sn-marker {
  color: var(--accent);
  cursor: pointer;
  font-size: 0.9em;
  vertical-align: super;
  line-height: 0;

  padding: 0.35em 0.4em;
  margin: 0 0.05em;
  border-radius: 3px;
  user-select: none;
  transition: background 120ms ease, color 120ms ease;
}
.sn-marker:hover {
  color: var(--accent-dim);
  background: var(--bg-inset);
}

.sidenote { display: none; }
.sn-toggle:checked ~ .sidenote {
  display: block;
  float: right;
  clear: right;
  width: 11rem;
  margin: 0.2rem -14rem 1rem 0;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--ink-soft);
  text-align: left;
  hyphens: none;
}
.sidenote code { font-size: 0.85em; }

@media (max-width: 56rem) {
  .sn-toggle:checked ~ .sidenote {
    float: none;
    clear: none;
    width: auto;
    margin: 0.7rem 0;
    padding: 0.6rem 0.9rem;
    background: var(--bg-inset);
    border-left: 2px solid var(--accent);
    border-radius: 0 3px 3px 0;
  }
}

ul.releases { list-style: none; margin: 1.6rem 0 0; padding: 0; }
ul.releases li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.2rem 1.4ch;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--rule);
}
ul.releases .ver { min-width: 3.2rem; font-weight: 700; }
ul.releases .name { min-width: 8.5rem; color: var(--ink-soft); font-style: italic; }
ul.releases .date { min-width: 6.5rem; color: var(--muted); }
ul.releases .needs { color: var(--muted); }
ul.releases li > a { margin-left: auto; }

.doc-group { margin: 0 0 2.4rem; }
.doc-group:last-of-type { margin-bottom: 0; }

.doc-group > h2 { margin-bottom: 0.4rem; color: var(--muted); }
.doc-group > .doc-desc {
  margin: 0 0 0.9rem;
  color: var(--muted);
  font-style: italic;
}

ul.doc-index { list-style: none; margin: 0; padding: 0; }
ul.doc-index li {
  display: flex;
  align-items: baseline;
  gap: 0.9ch;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--rule);
}
ul.doc-index a.part {
  flex: none;
  min-width: 6rem;
  color: var(--ink);
  font-weight: 700;
  border-bottom-color: transparent;
}
ul.doc-index a.part:hover { color: var(--accent); border-bottom-color: currentColor; }
ul.doc-index .role { color: var(--ink-soft); }

.related {
  margin-top: 2.6rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule);
  font-size: 0.95rem;
}
.related h2 {

  font-size: 0.98rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--ink-soft);
  margin: 0 0 0.6rem;
}
.related ul { list-style: none; margin: 0; padding: 0; }
.related li { display: inline; }
.related li:not(:last-child)::after {
  content: "·";
  color: var(--rule);
  margin: 0 0.5rem;
}

.pipeline {
  margin: 1.4rem 0 1.6rem;
  max-width: 38rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.45;
}
.pipeline .pl-stage {

  width: 18rem;
  max-width: 100%;
  padding: 0.45rem 1.1rem;
  text-align: center;
  border: 1px solid var(--muted);
  border-radius: 4px;
  background: var(--bg-inset);
  color: var(--ink);
}

.pipeline .pl-stage.pl-outside {
  border-style: dashed;
  color: var(--ink-soft);
}
.pipeline .pl-flow {
  padding: 0.3rem 0 0.3rem 1.4rem;
  color: var(--muted);
}
.pipeline .pl-flow .pl-what { color: var(--ink-soft); }
.pipeline .pl-io { color: var(--ink-soft); padding-left: 0.2rem; }

dl.commands { margin: 0.6rem 0 1.15rem; }
dl.commands dt {
  font-family: var(--mono);
  font-size: 0.9em;
  font-weight: 700;
  color: var(--ink);
  margin-top: 1rem;
}
dl.commands dd {
  margin: 0.15rem 0 0;
  color: var(--ink-soft);
}

figure.shot {
  margin: 1.6rem 0;
  max-width: 38rem;
}
figure.shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: #000;
  image-rendering: pixelated;
}
figure.shot figcaption {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.88rem;
  font-style: italic;
}

figure.diagram { margin: 1.6rem 0; max-width: var(--measure); }
.diagram-scroll { overflow-x: auto; }
figure.diagram svg { display: block; width: 100%; min-width: 34rem; height: auto; font-family: var(--serif); }
figure.diagram figcaption { margin-top: 0.5rem; color: var(--muted); font-size: 0.88rem; font-style: italic; }
.d-box { fill: var(--bg-inset); stroke: var(--rule); }
.d-group { fill: none; stroke: var(--rule); }
.d-hw { fill: none; stroke: var(--muted); stroke-dasharray: 4 3; }
.d-line { stroke: var(--muted); }
.d-name { fill: var(--ink); font-size: 15px; }
.d-role { fill: var(--muted); font-size: 11.5px; }
.d-label { fill: var(--muted); font-size: 12px; font-style: italic; }
.d-link:hover, .d-link:focus-visible { text-decoration: underline; }

.stub-note {
  margin: 1.4rem 0 0;
  padding: 0.7rem 0.95rem;
  background: var(--bg-inset);
  border-left: 2px solid var(--accent);
  border-radius: 0 3px 3px 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-style: italic;
}

.marks {
  display: flex;
  gap: 2.5rem;
  margin: 1.1rem 0 1.6rem;
}
.mark-cell { text-align: center; }
.mark-cell .glyph {
  display: block;
  font-size: 3.2rem;
  line-height: 1;
  color: var(--logo);
}
.mark-cell .label {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 0.6rem 0 1rem;
  max-width: 38rem;
}
.swatch { font-size: 0.8rem; color: var(--muted); }
.swatch .chip {
  display: block;
  width: 5rem;
  height: 3rem;
  margin-bottom: 0.4rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
}

dl.licences { margin: 0.6rem 0 1.15rem; }
dl.licences dt {
  font-weight: 700;
  color: var(--ink);
  margin-top: 1rem;
}
dl.licences dd {
  margin: 0.15rem 0 0;
  color: var(--ink-soft);
}

.release-card {
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1.2rem 1.3rem;
  margin: 1.4rem 0 2rem;
  background: var(--bg-inset);
}
.release-card .rc-top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6ch 1rem;
}
.release-card .rc-version {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
}
.release-card .rc-date { color: var(--muted); font-size: 0.9rem; }

.release-card .rc-status {
  margin-left: auto;
  font-style: italic;
  font-size: 0.9rem;
  color: var(--muted);
}
.release-card .rc-note { margin: 0.9rem 0 0; color: var(--ink-soft); }

.downloads {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1rem 0 0;
}
.dl {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6ch;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--muted);
  font-size: 0.92rem;
  cursor: not-allowed;
}
.dl .dl-kind { color: var(--ink-soft); font-weight: 700; }
.dl .dl-meta { font-size: 0.82rem; }

a.dl {
  cursor: pointer;
  color: var(--muted);
}
a.dl:hover {
  color: var(--ink-soft);
  border-color: var(--muted);
}
a.dl::after { content: none; }

ol.install {
  margin: 0.6rem 0 0;
  padding-left: 1.3rem;
  color: var(--ink-soft);
}
ol.install li { margin: 0 0 0.4rem; }

@media (max-width: 34rem) {
  body { font-size: 18px; }
  .about p { text-align: left; }
}