/* Layout: one narrow reading column on white; navy bands top and bottom; text-left, photo-right split carried over from the carousels; gold used only as a highlighter. */
:root {
  --navy: #072066;
  --navy-deep: #051748;
  --gold: #E0A527;
  --gold-soft: #F6E3B4;
  --ink: #3D3D3D;
  --ink-soft: #5E6272;
  --paper: #FFFFFF;
  --mist: #F3F4F8;
  --rule: #D5D8E2;
  --on-navy: #FFFFFF;
  --on-navy-soft: #C3CAE0;

  --sans: "Source Sans 3", "Segoe UI", Helvetica, Arial, sans-serif;
  --serif: var(--sans);

  --measure: 42rem;
  --wide: 68rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--navy); }
a:focus-visible, button:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }

.wrap { max-width: var(--wide); margin-inline: auto; padding-inline: var(--gutter); }

/* gold highlighter: navy words on gold, never gold words on white */
mark, .hl {
  background: linear-gradient(transparent 12%, var(--gold) 12%, var(--gold) 92%, transparent 92%);
  color: var(--navy);
  padding: 0 0.18em;
  margin: 0 -0.04em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.label {
  font-family: var(--sans);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* header */
.site-head {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 10;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
main > .wrap:first-child { padding-top: clamp(1rem, 3vw, 2rem); }
.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.75rem;
}
.site-head .logo img { height: 2.5rem; width: auto; }
.nav { display: flex; align-items: center; gap: clamp(0.75rem, 2.5vw, 1.75rem); }
.nav a { font-weight: 600; text-decoration: none; color: var(--navy); }
.nav a:hover { text-decoration: underline; text-underline-offset: 0.25em; }
.btn {
  display: inline-block;
  background: var(--navy);
  color: var(--on-navy) !important;
  font-weight: 700;
  padding: 0.5rem 1rem;
  border-radius: 2px;
  text-decoration: none !important;
  white-space: nowrap;
}
.btn:hover { background: var(--navy-deep); }
.btn.gold { background: var(--gold); color: var(--navy) !important; }
@media (max-width: 34rem) {
.site-head .logo img { height: 2.1rem; }
}

/* reading progress */
.progress { position: fixed; left: 0; top: env(safe-area-inset-top, 0px); height: 4px; width: 0; background: var(--gold); z-index: 20; }

/* split block: text left, black and white photo right */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 20rem);
  background: var(--navy);
  color: var(--on-navy);
}
.split .text { padding: clamp(1.5rem, 5vw, 3.5rem); display: flex; flex-direction: column; gap: 1.1rem; justify-content: center; min-width: 0; }
.split .photo { position: relative; min-height: 16rem; }
.split .photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: grayscale(1); }
.split .label { color: var(--gold); }
.split h1, .split h2 {
  font-family: var(--sans);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0;
  text-wrap: balance;
  color: var(--on-navy);
}
.split h1 { font-size: clamp(2rem, 5.2vw, 3.5rem); }
.split h2 { font-size: clamp(1.75rem, 4.2vw, 2.75rem); }
.split h1 em, .split h2 em { font-style: normal; color: var(--gold); }
.split h2 a { color: inherit; text-decoration: none; }
.split h2 a:hover { text-decoration: underline; text-decoration-color: var(--gold); text-underline-offset: 0.18em; }
.split .dek { font-family: var(--serif); font-size: clamp(1.1rem, 2vw, 1.3rem); line-height: 1.45; color: var(--on-navy-soft); margin: 0; max-width: 34rem; }
.split .meta { font-size: 0.9375rem; color: var(--on-navy-soft); display: flex; flex-wrap: wrap; gap: 0.35rem 1rem; }
@media (max-width: 46rem) {
  .split { grid-template-columns: minmax(0, 1fr); }
  .split .photo { min-height: 13rem; order: -1; }
}

/* home */
.intro { padding-block: clamp(2.5rem, 7vw, 5rem) clamp(1.75rem, 4vw, 3rem); }
.intro h1 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(2.1rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--navy);
  margin: 0 0 1.1rem;
  max-width: 18ch;
  text-wrap: balance;
}
.intro p { font-family: var(--serif); font-size: clamp(1.1rem, 2vw, 1.3rem); line-height: 1.5; max-width: 36rem; margin: 0; }

.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding-block: 0 0.75rem; border-bottom: 2px solid var(--navy); margin-top: clamp(2.5rem, 6vw, 4.5rem); }
.section-head h2 { font-size: 1rem; letter-spacing: 0.09em; text-transform: uppercase; color: var(--navy); margin: 0; }

.queue { list-style: none; margin: 0; padding: 0; }
.queue li { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: 0.25rem 1.5rem; padding-block: 1.4rem; border-bottom: 1px solid var(--rule); }
.queue h3 { font-size: clamp(1.25rem, 2.6vw, 1.6rem); line-height: 1.2; color: var(--navy); margin: 0 0 0.35rem; text-wrap: balance; }
.queue p { font-family: var(--serif); margin: 0; max-width: 38rem; }
.queue .tag { padding-top: 0.35rem; }
@media (max-width: 40rem) { .queue li { grid-template-columns: minmax(0, 1fr); } }

.about { padding-block: 0 clamp(2.5rem, 6vw, 4.5rem); }
.about .section-head h2 { font-size: 1rem; line-height: 1.5; }
.about p { font-size: 1.1875rem; line-height: 1.6; max-width: 42rem; margin: 1.25rem 0 0; }
.about .body { font-family: var(--serif); font-size: 1.125rem; line-height: 1.6; display: flex; flex-direction: column; gap: 1rem; }
.about .body p { margin: 0; }
.rules { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.6rem; font-family: var(--sans); font-size: 1rem; }
.rules li { padding-left: 1.4rem; position: relative; }
.rules li::before { content: ""; position: absolute; left: 0; top: 0.5em; width: 0.7rem; height: 0.35rem; background: var(--gold); }

/* article */
.article { max-width: var(--measure); margin-inline: auto; padding-inline: var(--gutter); padding-block: clamp(2rem, 5vw, 3.5rem) clamp(3rem, 7vw, 5rem); }
.article > p, .article > ul, .article > ol {
  font-family: var(--serif);
  font-size: clamp(1.15rem, 1.6vw + 0.8rem, 1.3125rem);
  line-height: 1.62;
  margin: 0 0 1.25em;
}
.article > h2 {
  font-family: var(--sans);
  font-size: clamp(1.5rem, 3.4vw, 2rem);
  line-height: 1.15;
  color: var(--navy);
  margin: 2.4em 0 0.7em;
  text-wrap: balance;
}
.article abbr { text-decoration: none; }

.short { background: var(--mist); border-top: 4px solid var(--navy); padding: 1.4rem clamp(1.1rem, 3vw, 1.75rem) 1.5rem; margin-bottom: 2.5rem; }
.short .label { color: var(--navy); display: block; margin-bottom: 0.8rem; }
.short ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.7rem; font-size: 1.125rem; line-height: 1.45; }
.short li { padding-left: 1.4rem; position: relative; }
.short li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 0.7rem; height: 0.35rem; background: var(--gold); }

.chain { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 2rem 0 2.25rem; counter-reset: none; }
.chain div { background: var(--navy); color: var(--on-navy); padding: 0.9rem 0.9rem 1rem; position: relative; font-weight: 700; font-size: 1.0625rem; line-height: 1.2; min-width: 0; }
.chain div + div { border-left: 2px solid var(--paper); }
.chain div span { display: block; font-weight: 400; font-size: 0.875rem; color: var(--on-navy-soft); margin-top: 0.3rem; }
.chain div:last-child { background: var(--gold); color: var(--navy); }
.chain div:last-child span { color: var(--navy); }
@media (max-width: 34rem) { .chain { grid-template-columns: repeat(2, minmax(0, 1fr)); } .chain div:nth-child(3) { border-left: 0; } .chain div:nth-child(n+3) { border-top: 2px solid var(--paper); } }

figure { margin: 2.25rem 0 2.5rem; }
figcaption { font-size: 0.9375rem; color: var(--ink-soft); margin-top: 0.8rem; line-height: 1.4; }
.fig-title { font-weight: 700; font-size: 1.125rem; color: var(--navy); margin: 0 0 0.2rem; }
.fig-sub { font-size: 0.9375rem; color: var(--ink-soft); margin: 0 0 1.1rem; }

.ranges { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem 2rem; }
@media (max-width: 34rem) { .ranges { grid-template-columns: minmax(0, 1fr); } }
.panel h4 { font-size: 0.9375rem; margin: 0 0 0.6rem; color: var(--ink); font-weight: 700; }
.panel .unit { font-weight: 400; color: var(--ink-soft); }
.row { display: grid; grid-template-columns: 3.4rem minmax(0, 1fr); align-items: center; gap: 0.5rem; height: 2.6rem; }
.row .name { font-size: 0.875rem; color: var(--ink-soft); }
.track { position: relative; height: 100%; border-left: 1px solid var(--rule); background: linear-gradient(var(--rule), var(--rule)) left 50% / 100% 1px no-repeat; }
.bar { position: absolute; top: 50%; height: 0.75rem; margin-top: -0.375rem; border-radius: 4px; background: var(--navy); cursor: default; min-width: 0.75rem; }
.bar.before { background: var(--paper); border: 2px solid var(--navy); }
.bar::after { content: attr(data-label); position: absolute; left: 0; bottom: 100%; margin-bottom: 0.15rem; font-size: 0.8125rem; font-weight: 700; color: var(--ink); white-space: nowrap; font-variant-numeric: tabular-nums; }
.bar.right::after { left: auto; right: 0; }
.axis { display: grid; grid-template-columns: 3.4rem minmax(0, 1fr); gap: 0.5rem; }
.axis div { display: flex; justify-content: space-between; font-size: 0.75rem; color: var(--ink-soft); font-variant-numeric: tabular-nums; padding-top: 0.2rem; }
.tip { position: fixed; pointer-events: none; background: var(--navy-deep); color: var(--on-navy); font-size: 0.875rem; padding: 0.4rem 0.6rem; border-radius: 3px; z-index: 30; max-width: 16rem; line-height: 1.35; }

.bignum { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0.5rem 1.5rem; align-items: center; border-block: 2px solid var(--navy); padding-block: 1.25rem; margin: 2rem 0 2.25rem; }
.bignum strong { font-size: clamp(3rem, 11vw, 5rem); line-height: 0.95; color: var(--navy); font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.bignum span { font-size: 1.0625rem; line-height: 1.4; }
@media (max-width: 30rem) { .bignum { grid-template-columns: minmax(0, 1fr); } }

.sources { border-top: 2px solid var(--navy); margin-top: 3rem; padding-top: 1.1rem; }
.sources h2 { font-size: 0.8125rem; letter-spacing: 0.09em; text-transform: uppercase; color: var(--navy); margin: 0 0 0.8rem; }
.sources ol { margin: 0; padding-left: 1.25rem; font-size: 0.9375rem; line-height: 1.45; display: flex; flex-direction: column; gap: 0.4rem; color: var(--ink); }
.article > p.note { font-family: var(--sans); font-size: 0.9375rem; color: var(--ink-soft); margin-top: 1.5rem; line-height: 1.5; }
.back { display: inline-block; margin-top: 2rem; font-weight: 700; }

/* footer */
.site-foot { background: var(--navy); color: var(--on-navy-soft); }
.site-foot .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: 1.5rem 3rem; padding-block: clamp(2rem, 5vw, 3rem); align-items: start; }
.site-foot img { height: 2.6rem; width: auto; }
.site-foot p { margin: 0; font-size: 0.9375rem; line-height: 1.5; max-width: 36rem; }
.site-foot a { color: var(--on-navy); }
@media (max-width: 40rem) { .site-foot .wrap { grid-template-columns: minmax(0, 1fr); } }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ---- v3: sketch additions ---- */
.site-head .logo img { height: 3.25rem; }
@media (max-width: 34rem) { .site-head .logo img { height: 2.6rem; } }
.icon-btn { background: none; border: 0; padding: 0.35rem; cursor: pointer; color: var(--navy); display: inline-flex; align-items: center; justify-content: center; border-radius: 2px; }
.icon-btn:hover { background: var(--mist); }
.icon-btn svg { width: 1.35rem; height: 1.35rem; }

/* search panel */
.search-panel { border-bottom: 1px solid var(--rule); background: var(--paper); }
.search-panel .wrap { padding-block: 1rem 1.25rem; }
.search-panel input { width: 100%; font: inherit; font-size: 1.25rem; padding: 0.7rem 0.9rem; border: 2px solid var(--navy); border-radius: 2px; color: var(--ink); background: var(--paper); }
.search-panel input:focus { outline: 3px solid var(--gold); outline-offset: 1px; }
.search-results { list-style: none; margin: 0.75rem 0 0; padding: 0; }
.search-results li { border-bottom: 1px solid var(--rule); }
.search-results a, .search-results span.soon { display: flex; justify-content: space-between; gap: 1rem; padding: 0.7rem 0.1rem; text-decoration: none; color: var(--navy); font-weight: 600; }
.search-results small { color: var(--ink-soft); font-weight: 400; white-space: nowrap; }
.search-empty { color: var(--ink-soft); margin: 0.75rem 0 0; }

/* swipe slider */
.slider { position: relative; }
.slides { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; scroll-behavior: smooth; }
.slides::-webkit-scrollbar { display: none; }
.slides > .split { flex: 0 0 100%; scroll-snap-align: start; min-width: 0; }
.slider-bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-top: 0.9rem; }
.dots { display: flex; gap: 0.5rem; }
.dots button { width: 0.7rem; height: 0.7rem; border-radius: 50%; border: 2px solid var(--navy); background: var(--paper); padding: 0; cursor: pointer; }
.dots button[aria-current="true"] { background: var(--navy); }
.arrows { display: flex; gap: 0.5rem; }
.arrows button { width: 2.6rem; height: 2.6rem; border: 2px solid var(--navy); background: var(--paper); color: var(--navy); border-radius: 50%; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; }
.arrows button:hover { background: var(--navy); color: var(--on-navy); }
.arrows svg { width: 1.1rem; height: 1.1rem; }
.badge { display: inline-block; align-self: flex-start; background: var(--on-navy); color: var(--navy); font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; padding: 0.3rem 0.6rem; border-radius: 2px; }

/* in the works cards */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.5rem; padding-top: 1.5rem; }
@media (max-width: 52rem) { .cards { grid-template-columns: minmax(0, 1fr); } }
.card { display: flex; flex-direction: column; border: 1px solid var(--rule); background: var(--paper); min-width: 0; }
.card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; filter: grayscale(1); }
.card .body { display: flex; flex-direction: column; gap: 0.5rem; padding: 1.1rem 1.1rem 1.25rem; flex: 1; }
.card h3 { font-size: 1.25rem; line-height: 1.22; color: var(--navy); margin: 0; text-wrap: balance; }
.card p { margin: 0; font-size: 1rem; }
.card .more { margin-top: auto; padding-top: 0.6rem; display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.card .more a { font-weight: 700; color: var(--navy); text-decoration: none; border-bottom: 3px solid var(--gold); padding-bottom: 0.1rem; }
.card .more small { color: var(--ink-soft); font-size: 0.875rem; }

/* photos */
.photos { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.5rem; padding-top: 1.5rem; }
@media (max-width: 46rem) { .photos { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.photos a { position: relative; display: block; overflow: hidden; aspect-ratio: 3 / 4; background: var(--navy); }
.photos img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1); transition: transform 0.4s ease, opacity 0.3s ease; }
.photos a:hover img { transform: scale(1.04); opacity: 0.75; }
.photos span { position: absolute; left: 0; right: 0; bottom: 0; padding: 0.6rem 0.7rem; background: linear-gradient(transparent, rgba(5,23,72,0.92)); color: var(--on-navy); font-size: 0.875rem; font-weight: 600; line-height: 1.3; }

/* footer social */
.social { display: flex; gap: 0.75rem; margin-top: 1rem; }
.social a { width: 2.5rem; height: 2.5rem; border-radius: 50%; border: 1.5px solid var(--on-navy-soft); display: inline-flex; align-items: center; justify-content: center; color: var(--on-navy); }
.social a:hover { background: var(--gold); border-color: var(--gold); color: var(--navy); }
.social svg { width: 1.1rem; height: 1.1rem; fill: currentColor; }
.site-foot .brand { display: flex; flex-direction: column; }
@media (prefers-reduced-motion: reduce) { .slides { scroll-behavior: auto; } .photos img { transition: none; } }
.site-head .search-panel .wrap { display: block; }
.search-panel .label { display: block; margin-bottom: 0.5rem; }
.site-foot .brand { align-items: flex-start; }