/* Lagubendu — rail-scale */

:root {
  --bg: #101a24;
  --bg-alt: #16232f;
  --bg-contrast: #e9edf0;
  --text: #e3e9ee;
  --muted: #8b9aa6;
  --text-contrast: #101a24;
  --accent: #3fb3ae;
  --accent2: #d8a15a;
  --rule: rgba(139, 154, 166, 0.28);
  --step: 80px;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 18px;
  line-height: 1.9;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  line-height: 1.3;
  margin: 0 0 20px;
  letter-spacing: 0.005em;
}

h1 { font-size: 2.45rem; }
h2 { font-size: 1.65rem; }
h3 { font-size: 1.2rem; }

p { margin: 0 0 26px; }

a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

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

img { max-width: 100%; height: auto; display: block; }

/* ---------- grid ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 0 24px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
}

.rail {
  grid-column: 1 / span 2;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.6;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.rail .num { color: var(--accent2); display: block; margin-bottom: 10px; }

.ticks {
  display: block;
  margin-top: 14px;
  width: 100%;
  height: 24px;
  background-image: repeating-linear-gradient(
    to right,
    var(--rule) 0 1px,
    transparent 1px 12px
  );
}

.ticks-v {
  display: block;
  width: 1px;
  height: 24px;
  margin: 26px 0;
  background: var(--accent2);
  opacity: 0.75;
}

.body-col { grid-column: 3 / span 7; }
.wide-col { grid-column: 3 / span 9; }

/* ---------- header ---------- */

.site-header {
  border-bottom: 1px solid var(--rule);
  padding: 22px 0;
}

.site-header .grid { align-items: baseline; }

.brand {
  grid-column: 1 / span 3;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
}

.site-nav { grid-column: 5 / span 8; }

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  justify-content: flex-end;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ---------- sections ---------- */

section { padding: var(--step) 0; }

section.alt { background: var(--bg-alt); }

section.contrast {
  background: var(--bg-contrast);
  color: var(--text-contrast);
}

section.contrast h2,
section.contrast h3 { color: var(--text-contrast); }

section.contrast .rail { color: #5c6a74; }

section.contrast .ticks {
  background-image: repeating-linear-gradient(
    to right,
    rgba(16, 26, 36, 0.35) 0 1px,
    transparent 1px 12px
  );
}

section.contrast a { color: #1c7d79; }

.lead {
  font-size: 1.12rem;
  color: var(--text);
}

.hero { padding-top: 96px; padding-bottom: var(--step); }

.hero h1 { grid-column: 3 / span 8; max-width: 21ch; }

.hero .hero-sub {
  grid-column: 3 / span 6;
  color: var(--muted);
  font-size: 1.08rem;
  margin-top: 8px;
}

.hero .rail-tall {
  grid-column: 1 / span 2;
  grid-row: 1 / span 2;
}

.hero .scale {
  display: block;
  width: 1px;
  height: 220px;
  margin-top: 18px;
  background-image: repeating-linear-gradient(
    to bottom,
    var(--rule) 0 1px,
    transparent 1px 16px
  );
}

/* ---------- figures ---------- */

.figure-main {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 0 24px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
  align-items: start;
}

.figure-main figcaption {
  grid-column: 1 / span 3;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  padding-top: 6px;
}

.figure-main .frame { grid-column: 4 / span 9; }

.figure-main img { width: 100%; }

.detail-block { align-items: start; }

.detail-block .figure-detail {
  grid-column: 2 / span 4;
  margin: 0;
}

.detail-block .figure-detail img { width: 100%; }

.detail-block .figure-detail figcaption {
  font-size: 14px;
  color: #5c6a74;
  margin-top: 12px;
}

.detail-block .detail-text { grid-column: 7 / span 6; }

/* ---------- lists ---------- */

.cols-2 {
  grid-column: 3 / span 9;
  columns: 2;
  column-gap: 48px;
}

.cols-2 ul { margin: 0; }

ul.marked, ol.marked {
  padding-left: 20px;
  margin: 0 0 26px;
}

ul.marked li, ol.marked li {
  margin-bottom: 14px;
  break-inside: avoid;
}

ul.marked li::marker { color: var(--accent); }
ol.marked li::marker { color: var(--accent2); font-variant-numeric: tabular-nums; }

.term { color: var(--accent); }

section.contrast .term { color: #1c7d79; }

.note {
  color: var(--muted);
  font-size: 0.94rem;
}

dl.gloss { margin: 0; }
dl.gloss dt {
  font-family: Georgia, "Times New Roman", serif;
  color: var(--accent2);
  margin-top: 22px;
}
dl.gloss dd { margin: 6px 0 0; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 40px 0 56px;
}

.patchbay {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px 32px;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
}

.patchbay .f-name {
  font-family: Georgia, "Times New Roman", serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.95rem;
}

.patchbay ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 0;
  padding: 0;
}

.patchbay a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.86rem;
  letter-spacing: 0.06em;
}

.patchbay a:hover { color: var(--text); text-decoration: underline; }

.patchbay .f-mail a { color: var(--accent); }

.footer-rule {
  max-width: 1240px;
  margin: 26px auto 0;
  padding: 0 32px;
}

.footer-rule hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0 0 14px;
}

.footer-rule p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- responsive ---------- */

@media (max-width: 1000px) {
  .hero h1 { grid-column: 3 / span 10; }
  .hero .hero-sub { grid-column: 3 / span 9; }
  .body-col, .wide-col { grid-column: 3 / span 10; }
  .cols-2 { grid-column: 3 / span 10; column-gap: 36px; }
  .figure-main .frame { grid-column: 4 / span 9; }
  .detail-block .figure-detail { grid-column: 2 / span 5; }
  .detail-block .detail-text { grid-column: 7 / span 6; }
  .site-nav { grid-column: 4 / span 9; }
}

@media (max-width: 720px) {
  :root { --step: 48px; }

  body { font-size: 17px; line-height: 1.85; }
  h1 { font-size: 1.95rem; }
  h2 { font-size: 1.4rem; }

  .grid, .figure-main, .patchbay, .footer-rule {
    grid-template-columns: 1fr;
    display: block;
    padding: 0 20px;
  }

  .grid > *, .figure-main > * { grid-column: auto; }

  .rail, .hero .rail-tall {
    display: block;
    margin-bottom: 14px;
  }

  .rail .num { display: inline; margin: 0 10px 0 0; }
  .ticks { max-width: 160px; }
  .hero .scale { width: 100%; height: 1px;
    background-image: repeating-linear-gradient(to right, var(--rule) 0 1px, transparent 1px 12px);
    margin: 14px 0 0; }

  .hero { padding-top: 48px; }
  .hero h1 { max-width: none; }

  .cols-2 { columns: 1; }

  .figure-main figcaption { padding-top: 12px; }
  .figure-main .frame { margin-bottom: 0; }
  .figure-main figcaption { order: 2; }

  .detail-block .figure-detail { margin-bottom: 22px; }

  .site-nav ul { justify-content: flex-start; gap: 6px 18px; }
  .site-nav { margin-top: 12px; }

  .patchbay { display: block; }
  .patchbay ul { margin: 14px 0; }
}