/* ==========================================================================
   The Rights Desk (imagesources.org) — London picture archive
   paper white, darkroom charcoal, contact-sheet red, thin silver rules.
   Prefixe propre au site : rkd- (zéro classe gan- conservée).
   Polices système uniquement, aucune requête externe.
   ========================================================================== */

/* ---------- 1. TOKENS ---------- */
:root {
  --rkd-paper: #faf8f4;
  --rkd-card: #ffffff;
  --rkd-wash: #f1ede6;
  --rkd-ink: #1d1c1a;
  --rkd-soft: #5d5a55;
  --rkd-rule: #d8d3c8;
  --rkd-red: #b3231b;
  --rkd-red-deep: #7e1610;
  --rkd-red-tint: #f7e4e1;
  --rkd-char: #1d1c1a;
  --rkd-char-ink: #f3efe8;
  --rkd-char-soft: #c9c2b6;
  --rkd-title: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --rkd-text: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --rkd-figure: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --rkd-span: 74rem;
  --rkd-measure: 37rem;
  --rkd-cardmin: 16rem;
  --rkd-step: 1.5rem;
  --rkd-round: 2px;
  --rkd-line: 1px solid var(--rkd-rule);
  --rkd-tint: var(--rkd-red);
}

/* ---------- 2. BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}
body {
  margin: 0; background: var(--rkd-paper); color: var(--rkd-ink);
  font-family: var(--rkd-text);
  font-size: clamp(1rem, .97rem + .18vw, 1.0625rem);
  line-height: 1.62; overflow-wrap: break-word;
}
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { font-family: var(--rkd-title); line-height: 1.14; margin: 0 0 .6em; font-weight: 650; }
h1 { font-size: clamp(1.8rem, 1.4rem + 1.9vw, 2.7rem); letter-spacing: -.015em; }
h2 { font-size: clamp(1.32rem, 1.16rem + .72vw, 1.72rem); letter-spacing: -.01em; }
h3 { font-size: 1.12rem; }
p, ul, ol, dl, table { margin: 0 0 var(--rkd-step); }
a { color: var(--rkd-red-deep); text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { color: var(--rkd-ink); }
:focus-visible { outline: 2px solid var(--rkd-red); outline-offset: 2px; border-radius: var(--rkd-round); }
.rkd-span { width: min(100% - 2rem, var(--rkd-span)); margin-inline: auto; }
.rkd-skip { position: absolute; left: -9999px; top: 0; background: var(--rkd-char); color: var(--rkd-char-ink); padding: .6rem 1rem; z-index: 20; }
.rkd-skip:focus { left: .5rem; top: .5rem; }
[hidden] { display: none !important; }

/* ---------- 3. MASTHEAD ---------- */
.rkd-masthead { background: var(--rkd-card); border-bottom: var(--rkd-line); }
.rkd-masthead__rule { height: 5px; background: repeating-linear-gradient(90deg, var(--rkd-red) 0 34px, var(--rkd-char) 34px 40px, var(--rkd-red) 40px 74px, var(--rkd-rule) 74px 76px); }
.rkd-masthead__inner { display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem 1.4rem; padding: 1.05rem 0 .9rem; }
.rkd-brand { font-family: var(--rkd-title); font-size: 1.42rem; font-weight: 700; color: var(--rkd-ink); text-decoration: none; letter-spacing: -.01em; }
.rkd-brand:hover { color: var(--rkd-red-deep); }
.rkd-brand small { display: block; font-family: var(--rkd-figure); font-weight: 400; font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--rkd-red); margin-top: .15rem; }
.rkd-strap { margin: 0; color: var(--rkd-soft); font-size: .86rem; border-left: var(--rkd-line); padding-left: 1rem; max-width: 34rem; }
.rkd-menu { margin-left: auto; }
.rkd-menu__toggle { position: absolute; opacity: 0; pointer-events: none; }
.rkd-menu__handle { display: none; font-family: var(--rkd-figure); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; border: var(--rkd-line); border-radius: var(--rkd-round); padding: .45rem .8rem; background: var(--rkd-card); color: var(--rkd-ink); cursor: pointer; }
.rkd-menu ul { display: flex; flex-wrap: wrap; gap: .2rem 1.1rem; list-style: none; margin: 0; padding: 0; }
.rkd-menu__link { color: var(--rkd-soft); text-decoration: none; font-size: .8rem; letter-spacing: .07em; text-transform: uppercase; padding: .2rem 0; white-space: nowrap; }
.rkd-menu__link:hover, .rkd-menu__link[aria-current="page"] { color: var(--rkd-red-deep); }
.rkd-menu__link[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--rkd-red); }
@media (min-width: 56rem) {
  .rkd-menu__handle { display: none; }
  .rkd-menu ul { display: flex; }
}
@media (max-width: 55.99rem) {
  .rkd-strap { border-left: 0; padding-left: 0; flex-basis: 100%; }
  .rkd-menu { margin-left: 0; flex-basis: 100%; }
  .rkd-menu__handle { display: inline-block; }
  .rkd-menu ul { display: none; flex-direction: column; gap: 0; margin-top: .7rem; border: var(--rkd-line); border-radius: var(--rkd-round); background: var(--rkd-card); overflow: hidden; }
  .rkd-menu__toggle:checked ~ ul { display: grid; }
  .rkd-menu li { border-bottom: var(--rkd-line); }
  .rkd-menu li:last-child { border-bottom: 0; }
  .rkd-menu__link { display: block; padding: .65rem .9rem; }
}

/* ---------- 4. FRONT PAGE LEAD ---------- */
.rkd-lead { padding: calc(var(--rkd-step) * 2) 0 var(--rkd-step); }
.rkd-lead__grid { display: grid; gap: 1.6rem; grid-template-columns: 1fr; align-items: start; }
@media (min-width: 60rem) {
  .rkd-lead__grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
}
.rkd-kicker { font-family: var(--rkd-figure); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--rkd-red); margin: 0 0 .7rem; }
.rkd-kicker::before { content: ""; display: inline-block; width: 1.6rem; height: 2px; background: var(--rkd-red); vertical-align: middle; margin-right: .55rem; }
.rkd-lead h1 { max-width: 22ch; }
.rkd-lead__deck { color: var(--rkd-soft); max-width: var(--rkd-measure); font-size: 1.04rem; }
.rkd-lead__facts { display: flex; flex-wrap: wrap; gap: 0; list-style: none; margin: var(--rkd-step) 0 0; padding: 0; border: var(--rkd-line); border-radius: var(--rkd-round); background: var(--rkd-card); }
.rkd-lead__facts li { flex: 1 1 8rem; padding: .8rem 1rem; border-right: var(--rkd-line); }
.rkd-lead__facts li:last-child { border-right: 0; }
.rkd-lead__facts b { display: block; font-family: var(--rkd-figure); font-weight: 600; font-size: 1.3rem; color: var(--rkd-red-deep); }
.rkd-lead__facts span { display: block; font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--rkd-soft); }
.rkd-frame { margin: 0; background: var(--rkd-char); border-radius: var(--rkd-round); overflow: hidden; }
.rkd-frame img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.rkd-frame figcaption { font-size: .8rem; color: var(--rkd-char-soft); padding: .55rem .9rem .7rem; }
.rkd-button { display: inline-block; background: var(--rkd-red); color: #fff; text-decoration: none; font-weight: 600; font-size: .92rem; padding: .65rem 1.2rem; border-radius: var(--rkd-round); margin-top: 1rem; }
.rkd-button:hover { background: var(--rkd-red-deep); color: #fff; }

/* ---------- 5. SHELF (section band) + ARCHIVE GRID ---------- */
.rkd-shelf { padding: calc(var(--rkd-step) * 1.6) 0; }
.rkd-shelf--dark { background: var(--rkd-char); color: var(--rkd-char-ink); }
.rkd-shelf--dark .rkd-shelf__standfirst, .rkd-shelf--dark .rkd-card__sum { color: var(--rkd-char-soft); }
.rkd-shelf--dark .rkd-card { background: #262422; border-color: #3a372f; }
.rkd-shelf--dark .rkd-card__title a { color: var(--rkd-char-ink); }
.rkd-shelf--dark .rkd-card__title a:hover { color: #fff; }
.rkd-shelf--dark .rkd-count { color: var(--rkd-char-soft); }
.rkd-shelf--dark .rkd-more { color: #f0b9b4; }
.rkd-shelf--dark .rkd-kicker { color: #e88; }
.rkd-shelf--dark h2 { color: var(--rkd-char-ink); }
.rkd-shelf--dark .rkd-folio { color: var(--rkd-char-soft); }
.rkd-shelf--dark .rkd-tag { background: #33302a; color: #e8ddcb; }
.rkd-shelf__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .5rem 1rem; margin-bottom: .4rem; }
.rkd-shelf__head h2 { margin: 0; }
.rkd-count { font-family: var(--rkd-figure); font-size: .8rem; color: var(--rkd-soft); }
.rkd-shelf__head .rkd-more { margin-left: auto; }
.rkd-shelf__standfirst { max-width: var(--rkd-measure); color: var(--rkd-soft); margin-bottom: var(--rkd-step); }
.rkd-shelf__cols { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 60rem) {
  .rkd-shelf__cols--split { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); align-items: start; }
  .rkd-shelf__cols--even { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.rkd-archive { display: grid; grid-template-columns: repeat(auto-fill, minmax(var(--rkd-cardmin), 1fr)); gap: 1rem; }
.rkd-card { display: flex; flex-direction: column; background: var(--rkd-card); border: var(--rkd-line); border-top: 3px solid var(--rkd-tint); border-radius: var(--rkd-round); padding: .9rem 1rem 1rem; }
.rkd-card:hover { border-color: var(--rkd-tint); }
.rkd-card[data-shelf="releases-and-reuse"] { --rkd-tint: var(--rkd-char); }
.rkd-card[data-shelf="finding-and-provenance"] { --rkd-tint: var(--rkd-soft); }
.rkd-card figure { margin: -.9rem -1rem .75rem; border-bottom: var(--rkd-line); background: var(--rkd-wash); }
.rkd-card figure img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.rkd-card--wide figure img { aspect-ratio: 3 / 2; }
.rkd-card--square figure img { aspect-ratio: 1 / 1; }
.rkd-folio { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin: 0 0 .5rem; }
.rkd-folio__no { font-family: var(--rkd-figure); font-size: .72rem; letter-spacing: .05em; color: var(--rkd-soft); }
.rkd-tag { font-size: .66rem; letter-spacing: .09em; text-transform: uppercase; background: var(--rkd-red-tint); color: var(--rkd-red-deep); padding: .14rem .5rem; border-radius: var(--rkd-round); text-decoration: none; }
a.rkd-tag:hover { background: var(--rkd-red); color: #fff; }
.rkd-card__title { margin: 0 0 .4rem; font-size: 1.05rem; }
.rkd-card__title a { color: var(--rkd-ink); text-decoration: none; }
.rkd-card__title a:hover { color: var(--rkd-red-deep); text-decoration: underline; }
.rkd-card__sum { font-size: .9rem; color: var(--rkd-soft); margin: 0 0 .6rem; }
.rkd-card__meta { margin: 0 0 .8rem; padding: .55rem 0 0; border-top: var(--rkd-line); font-size: .8rem; display: grid; gap: .12rem; }
.rkd-card__meta div { display: flex; gap: .5rem; justify-content: space-between; }
.rkd-card__meta dt { color: var(--rkd-soft); }
.rkd-card__meta dd { margin: 0; font-family: var(--rkd-figure); font-size: .76rem; text-align: right; }
.rkd-card__cta { margin: auto 0 0; }
.rkd-more { font-size: .82rem; font-weight: 600; text-decoration: none; color: var(--rkd-red-deep); }
.rkd-more:hover { text-decoration: underline; }
.rkd-more span { margin-left: .25rem; }

/* ---------- 6. STRIP (gallery) ---------- */
.rkd-strip { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr)); }
.rkd-strip figure { margin: 0; background: var(--rkd-wash); overflow: hidden; border-radius: var(--rkd-round); border: var(--rkd-line); }
.rkd-strip img { width: 100%; object-fit: cover; }
.rkd-strip figure:nth-child(1) img { aspect-ratio: 4 / 3; }
.rkd-strip figure:nth-child(2) img { aspect-ratio: 1 / 1; }
.rkd-strip figure:nth-child(3) img { aspect-ratio: 3 / 2; }
.rkd-strip figcaption { font-size: .78rem; color: var(--rkd-soft); padding: .45rem .7rem .6rem; background: var(--rkd-card); border-top: var(--rkd-line); }
.rkd-shelf--dark .rkd-strip figcaption { background: #262422; color: var(--rkd-char-soft); border-top-color: #3a372f; }

/* ---------- 7. GUIDE INDEX + METHOD BOX ---------- */
.rkd-index { display: flex; flex-wrap: wrap; gap: .3rem; list-style: none; margin: 0; padding: 0; }
.rkd-index a, .rkd-index span { display: inline-flex; align-items: center; justify-content: center; min-width: 2rem; padding: .3rem .4rem; background: var(--rkd-card); border: var(--rkd-line); border-radius: var(--rkd-round); font-family: var(--rkd-figure); font-size: .8rem; text-decoration: none; color: var(--rkd-ink); }
.rkd-index a:hover { border-color: var(--rkd-red); color: var(--rkd-red-deep); }
.rkd-index span[aria-disabled="true"] { color: var(--rkd-soft); background: transparent; border-style: dashed; }
.rkd-method { background: var(--rkd-card); border: var(--rkd-line); border-left: 3px solid var(--rkd-red); border-radius: var(--rkd-round); padding: 1.1rem 1.25rem; }
.rkd-method h2 { font-size: 1.15rem; }
.rkd-method p:last-child, .rkd-method ul:last-child { margin-bottom: 0; }
.rkd-method ul { padding-left: 1.1rem; }
.rkd-method li { margin-bottom: .35rem; }

/* ---------- 8. LEDGER (hub dense list) ---------- */
.rkd-ledger { list-style: none; margin: 0 0 var(--rkd-step); padding: 0; border-top: var(--rkd-line); }
.rkd-entry { display: grid; gap: .3rem 1rem; grid-template-columns: 1fr; padding: .95rem 0; border-bottom: var(--rkd-line); }
.rkd-entry__no { font-family: var(--rkd-figure); font-size: .74rem; color: var(--rkd-soft); }
.rkd-entry__title { margin: 0; font-size: 1.06rem; }
.rkd-entry__title a { color: var(--rkd-ink); text-decoration: none; }
.rkd-entry__title a:hover { color: var(--rkd-red-deep); text-decoration: underline; }
.rkd-entry__sum { margin: 0; font-size: .9rem; color: var(--rkd-soft); max-width: var(--rkd-measure); }
.rkd-entry__meta { margin: .2rem 0 0; font-size: .8rem; display: grid; gap: .1rem; }
@media (min-width: 52rem) {
  .rkd-entry { grid-template-columns: 6rem minmax(0, 1fr) 14rem; align-items: start; }
  .rkd-entry__no { grid-row: span 2; padding-top: .25rem; }
  .rkd-entry__meta { grid-column: 3; grid-row: 1 / span 2; }
}

/* ---------- 9. ARTICLE ---------- */
.rkd-crumb { padding: var(--rkd-step) 0 0; font-size: .8rem; color: var(--rkd-soft); }
.rkd-crumb ol { display: flex; flex-wrap: wrap; gap: .35rem; list-style: none; margin: 0; padding: 0; }
.rkd-crumb li::after { content: "/"; margin-left: .35rem; color: var(--rkd-rule); }
.rkd-crumb li:last-child::after { content: ""; }
.rkd-sheet { padding: var(--rkd-step) 0 calc(var(--rkd-step) / 2); border-bottom: var(--rkd-line); }
.rkd-sheet h1 { margin-bottom: .4rem; }
.rkd-standfirst { font-size: 1.05rem; color: var(--rkd-soft); max-width: var(--rkd-measure); }
.rkd-dateline { font-family: var(--rkd-figure); font-size: .74rem; color: var(--rkd-soft); margin: 0; }
.rkd-pair { display: grid; gap: calc(var(--rkd-step) * 1.5); padding: calc(var(--rkd-step) * 1.5) 0; }
@media (min-width: 60rem) {
  .rkd-pair { grid-template-columns: minmax(0, 1fr) 20rem; align-items: start; }
  .rkd-margin { position: sticky; top: 1rem; }
}
.rkd-prose > * { max-width: var(--rkd-measure); }
.rkd-prose h2 { margin-top: calc(var(--rkd-step) * 1.6); }
.rkd-prose h3 { margin-top: var(--rkd-step); }
.rkd-prose ul, .rkd-prose ol { padding-left: 1.2rem; }
.rkd-prose li { margin-bottom: .35rem; }
.rkd-prose figure { max-width: 100%; margin: var(--rkd-step) 0; background: var(--rkd-wash); border-radius: var(--rkd-round); overflow: hidden; border: var(--rkd-line); }
.rkd-prose figure img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.rkd-prose figcaption { font-size: .8rem; color: var(--rkd-soft); padding: .45rem .8rem .6rem; background: var(--rkd-card); border-top: var(--rkd-line); }
.rkd-note { background: var(--rkd-card); border: var(--rkd-line); border-radius: var(--rkd-round); padding: .35rem 1rem 1rem; }
.rkd-note h2 { font-size: 1rem; margin: .75rem 0 .5rem; }
.rkd-note table { width: 100%; border-collapse: collapse; font-size: .86rem; margin: 0; }
.rkd-note th, .rkd-note td { text-align: left; padding: .45rem 0; border-bottom: var(--rkd-line); vertical-align: top; }
.rkd-note tr:last-child th, .rkd-note tr:last-child td { border-bottom: 0; }
.rkd-note th { font-weight: 500; color: var(--rkd-soft); width: 45%; }
.rkd-note td { font-family: var(--rkd-figure); font-size: .8rem; }
.rkd-note td a, .rkd-entry__meta a { overflow-wrap: anywhere; }
.rkd-toc { margin-top: var(--rkd-step); }
.rkd-toc h2 { font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; color: var(--rkd-soft); font-family: var(--rkd-text); }
.rkd-toc ol { list-style: none; margin: 0; padding: 0; counter-reset: rkd; }
.rkd-toc li { counter-increment: rkd; border-top: var(--rkd-line); }
.rkd-toc a { display: block; padding: .45rem 0; font-size: .86rem; text-decoration: none; color: var(--rkd-ink); }
.rkd-toc a::before { content: counter(rkd, decimal-leading-zero) " "; font-family: var(--rkd-figure); font-size: .74rem; color: var(--rkd-red-deep); }
.rkd-toc a:hover { color: var(--rkd-red-deep); }
.rkd-neighbours { border-top: var(--rkd-line); padding: calc(var(--rkd-step) * 1.5) 0; }
.rkd-neighbours .rkd-archive { --rkd-cardmin: 13rem; }

/* ---------- 10. SERVICE PAGES ---------- */
.rkd-service { padding: calc(var(--rkd-step) * 1.5) 0; }
.rkd-service__cols { display: grid; gap: 1.4rem; grid-template-columns: 1fr; }
@media (min-width: 60rem) {
  .rkd-service__cols { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: start; }
}
.rkd-service__side { background: var(--rkd-card); border: var(--rkd-line); border-radius: var(--rkd-round); padding: 1rem 1.15rem; }
.rkd-service__side h2 { font-size: 1rem; }
.rkd-service__side ul { padding-left: 1.1rem; margin-bottom: 0; }
.rkd-service__side li { margin-bottom: .3rem; font-size: .9rem; }

/* ---------- 11. COLOPHON ---------- */
.rkd-colophon { background: var(--rkd-char); color: var(--rkd-char-ink); border-top: 5px solid var(--rkd-red); padding: calc(var(--rkd-step) * 1.5) 0; margin-top: var(--rkd-step); }
.rkd-colophon__grid { display: grid; gap: var(--rkd-step); grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); }
.rkd-colophon h2 { font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; color: var(--rkd-char-soft); font-family: var(--rkd-text); }
.rkd-colophon ul { list-style: none; margin: 0; padding: 0; font-size: .88rem; }
.rkd-colophon li { margin-bottom: .3rem; }
.rkd-colophon a { color: var(--rkd-char-ink); }
.rkd-colophon a:hover { color: #fff; }
.rkd-colophon__sign { border-top: 1px solid #3a372f; margin-top: var(--rkd-step); padding-top: .9rem; font-size: .82rem; color: var(--rkd-char-soft); }

/* ---------- 12. HUB HERO FIGURE ---------- */
.rkd-plate { margin: 0 0 var(--rkd-step); background: var(--rkd-char); border-radius: var(--rkd-round); overflow: hidden; }
.rkd-plate img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.rkd-plate figcaption { font-size: .8rem; color: var(--rkd-char-soft); padding: .5rem .9rem .65rem; }