/* ============================================================
   Insight Bay: The Field Guides
   Additive layer over styles.css and shop.css.
   Uses only existing design tokens. No palette is introduced.
   ============================================================ */

/* ---------- Byline under the page hero ---------- */
.ib-fg-hero { display:grid; grid-template-columns:minmax(0,1.35fr) minmax(0,1fr); gap:3.25rem; align-items:start; }
@media (max-width:900px){ .ib-fg-hero { grid-template-columns:1fr; gap:2.25rem; } }

.ib-fg-byline { display:flex; align-items:center; gap:.9rem; margin-top:2.25rem; }
.ib-fg-byline img {
  width:56px; height:56px; border-radius:999px; object-fit:cover;
  border:1px solid var(--ib-line-strong); flex:0 0 auto;
}
.ib-fg-byline__t { font-size:.9rem; color:var(--ib-ink-soft); line-height:1.5; }
.ib-fg-byline__t b { color:var(--ib-ink); font-weight:600; }

/* ---------- The derivation plate in the hero ---------- */
.ib-fg-derive {
  background:var(--ib-card-bg); border:1px solid var(--ib-line);
  border-radius:var(--ib-radius); padding:1.6rem 1.7rem;
}
.ib-fg-derive__k {
  font-size:.7rem; letter-spacing:.18em; text-transform:uppercase;
  color:var(--ib-gold); font-weight:600;
}
.ib-fg-derive__rows { margin-top:1.1rem; display:grid; gap:.85rem; }
.ib-fg-derive__row { display:grid; gap:.2rem; }
.ib-fg-derive__eq {
  font-family:var(--ib-font-mono); font-size:1.02rem; color:var(--ib-ink); font-weight:500;
}
.ib-fg-derive__note { font-size:.82rem; color:var(--ib-ink-muted); line-height:1.45; }
.ib-fg-derive__foot {
  margin-top:1.2rem; padding-top:1rem; border-top:1px dashed var(--ib-line);
  font-size:.84rem; color:var(--ib-ink-soft); line-height:1.5;
}

/* ---------- Currency control, demoted from the hero ---------- */
.ib-fg-curline {
  display:flex; align-items:center; justify-content:flex-end; gap:.75rem;
  flex-wrap:wrap; margin-bottom:1.25rem;
}
.ib-fg-curline__lab {
  font-size:.74rem; letter-spacing:.1em; text-transform:uppercase; color:var(--ib-ink-muted);
}
.ib-fg-curline .ib-curbar { flex-direction:row; align-items:center; }
.ib-fg-curline .ib-curbar__hint { display:none; }
.ib-fg-curline .ib-curbar__rail { padding:0; }
.ib-fg-curline .ib-curbar__pill { padding:.32rem .62rem; font-size:.76rem; }

/* ---------- The collection statement ---------- */
.ib-fg-statement { background:var(--ib-bg-deep); border-top:1px solid var(--ib-line); border-bottom:1px solid var(--ib-line); }
.ib-fg-statement__lede { max-width:62ch; }

.ib-fg-marks {
  margin-top:2.5rem; display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:1.6rem 2.2rem;
}
@media (max-width:860px){ .ib-fg-marks { grid-template-columns:repeat(2,minmax(0,1fr)); gap:1.4rem; } }
@media (max-width:480px){ .ib-fg-marks { grid-template-columns:1fr; } }
.ib-fg-mark { border-top:1px solid var(--ib-gold); padding-top:.9rem; }
.ib-fg-mark svg { width:22px; height:22px; color:var(--ib-gold); display:block; margin-bottom:.6rem; }
.ib-fg-mark__t { font-weight:600; color:var(--ib-ink); font-size:.95rem; }
.ib-fg-mark__d { font-size:.85rem; color:var(--ib-ink-soft); line-height:1.5; margin-top:.25rem; }

.ib-fg-stop {
  margin-top:2.5rem; border-left:2px solid var(--ib-accent); padding:.15rem 0 .15rem 1.15rem;
  max-width:64ch;
}
.ib-fg-stop b { color:var(--ib-ink); }
.ib-fg-stop p { color:var(--ib-ink-soft); font-size:.95rem; line-height:1.6; margin:0; }

/* ---------- Editorial group headers ---------- */
.ib-fg-group { margin-top:3.5rem; }
.ib-fg-group:first-of-type { margin-top:0; }
.ib-fg-group__head {
  display:flex; align-items:flex-end; justify-content:space-between; gap:1.5rem;
  padding-bottom:1rem; border-bottom:1px solid var(--ib-line); margin-bottom:2rem; flex-wrap:wrap;
}
.ib-fg-group__k {
  font-family:var(--ib-font-mono); font-size:.72rem; letter-spacing:.2em;
  text-transform:uppercase; color:var(--ib-gold);
}
.ib-fg-group__t { font-size:1.35rem; font-weight:600; color:var(--ib-ink); margin:.35rem 0 0; line-height:1.3; }
.ib-fg-group__d { font-size:.92rem; color:var(--ib-ink-soft); margin:.35rem 0 0; max-width:56ch; line-height:1.55; }

/* ---------- The volume card, six elements ---------- */
.ib-fg-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:1.75rem; }
.ib-fg-grid.is-two { grid-template-columns:repeat(2,minmax(0,1fr)); }
@media (max-width:1040px){ .ib-fg-grid { grid-template-columns:repeat(2,minmax(0,1fr)); } }
@media (max-width:720px){ .ib-fg-grid, .ib-fg-grid.is-two { grid-template-columns:1fr; gap:3.5rem; } }

.ib-vcard {
  display:flex; flex-direction:column; background:var(--ib-card-bg);
  border:1px solid var(--ib-line); border-radius:var(--ib-radius-sm); overflow:hidden;
  transition:border-color .25s ease, transform .25s ease;
}
.ib-vcard:hover { border-color:var(--ib-line-strong); transform:translateY(-2px); }
.ib-vcard__cover { display:block; position:relative; background:#20201E; }
.ib-vcard__cover img { display:block; width:100%; height:100%; aspect-ratio:1/1.414; object-fit:cover; object-position:top center; }

/* Feature rows: the same card, given a larger cover. Nothing is cropped,
   because the cover art and its frame share a 3:4 ratio. */
@media (min-width:721px){
  .ib-fg-grid.is-two .ib-vcard__body { padding:1.75rem 1.9rem 1.9rem; }
  .ib-fg-grid.is-two .ib-vcard__t { font-size:1.5rem; }
  .ib-fg-grid.is-two .ib-vcard__d { font-size:.98rem; max-width:54ch; }
}
.ib-vcard__body { padding:1.5rem 1.5rem 1.6rem; display:flex; flex-direction:column; flex:1; }
.ib-vcard__num {
  font-family:var(--ib-font-mono); font-size:.72rem; letter-spacing:.18em;
  text-transform:uppercase; color:var(--ib-gold);
}
.ib-vcard__t { font-size:1.3rem; font-weight:600; line-height:1.2; color:var(--ib-ink); margin:.45rem 0 0; }
.ib-vcard__t a { color:inherit; }
.ib-vcard__lvl { font-size:.8rem; color:var(--ib-ink-muted); margin-top:.4rem; letter-spacing:.01em; }
.ib-vcard__d { font-size:.92rem; color:var(--ib-ink-soft); line-height:1.6; margin:.85rem 0 0; }
.ib-vcard__spec {
  font-family:var(--ib-font-mono); font-size:.72rem; letter-spacing:.06em;
  color:var(--ib-ink-muted); margin-top:1.1rem;
}
.ib-vcard__foot {
  margin-top:auto; padding-top:1.35rem; display:flex; align-items:baseline;
  justify-content:space-between; gap:1rem; flex-wrap:wrap;
}
.ib-vcard__price { font-family:var(--ib-font-serif); font-size:1.45rem; font-weight:700; color:var(--ib-ink); line-height:1; }
.ib-vcard__go {
  font-size:.88rem; font-weight:600; color:var(--ib-ink);
  border-bottom:1px solid var(--ib-gold); padding-bottom:2px;
  transition:color .2s ease, border-color .2s ease;
}
.ib-vcard__go:hover { color:var(--ib-accent); border-color:var(--ib-accent); }

/* Beyond the Syllabus, on the emphasis plate */
.ib-vcard.is-beyond { background:var(--ib-emphasis-bg); border-color:rgba(245,241,235,.14); }
.ib-vcard.is-beyond .ib-vcard__cover { background:var(--ib-emphasis-bg); }
.ib-vcard.is-beyond .ib-vcard__t { color:var(--ib-emphasis-text); }
.ib-vcard.is-beyond .ib-vcard__lvl,
.ib-vcard.is-beyond .ib-vcard__d { color:var(--ib-emphasis-text-soft); }
.ib-vcard.is-beyond .ib-vcard__spec { color:var(--ib-emphasis-text-faint); }
.ib-vcard.is-beyond .ib-vcard__price { color:var(--ib-emphasis-text); }
.ib-vcard.is-beyond .ib-vcard__go { color:var(--ib-emphasis-text); border-color:var(--ib-gold); }
.ib-vcard.is-beyond:hover { border-color:rgba(245,241,235,.3); }

/* ---------- Which volume, selection aid ---------- */
.ib-fg-picker { display:flex; align-items:center; gap:.6rem; flex-wrap:wrap; }
.ib-fg-picker label { font-size:.76rem; letter-spacing:.08em; text-transform:uppercase; color:var(--ib-ink-muted); }
.ib-fg-picker select {
  font:inherit; font-size:.86rem; color:var(--ib-ink); background:var(--ib-card-bg);
  border:1px solid var(--ib-line); border-radius:999px; padding:.42rem .9rem; cursor:pointer;
}
.ib-fg-picker select:focus-visible { outline:2px solid var(--ib-accent); outline-offset:2px; }
.ib-vcard.is-dim { opacity:.32; }
.ib-vcard.is-hit { border-color:var(--ib-gold); }

/* ---------- The Library band ---------- */
.ib-fg-library {
  background:var(--ib-card-bg); border:1px solid var(--ib-line-strong);
  border-radius:var(--ib-radius); padding:2.5rem 2.5rem 2.25rem; margin-top:3.5rem;
  display:grid; grid-template-columns:minmax(0,1.25fr) minmax(0,1fr); gap:2.5rem; align-items:center;
}
@media (max-width:820px){ .ib-fg-library { grid-template-columns:1fr; gap:1.75rem; padding:2rem 1.6rem; } }
.ib-fg-library h2 { font-size:1.6rem; margin:.4rem 0 0; }
.ib-fg-library p { color:var(--ib-ink-soft); font-size:.95rem; line-height:1.65; margin:.75rem 0 0; max-width:52ch; }
.ib-fg-library__buy { display:flex; flex-direction:column; gap:.85rem; align-items:flex-start; }
.ib-fg-library__price { font-family:var(--ib-font-serif); font-size:2.4rem; font-weight:700; color:var(--ib-ink); line-height:1; }
.ib-fg-library__sub { font-size:.84rem; color:var(--ib-ink-muted); }
.ib-fg-library__note {
  grid-column:1 / -1; margin-top:.5rem; padding-top:1.25rem; border-top:1px dashed var(--ib-line);
  font-size:.88rem; color:var(--ib-ink-soft); line-height:1.6;
}
.ib-fg-spines { display:flex; gap:.35rem; margin-top:1.4rem; }
.ib-fg-spines span {
  flex:1; height:52px; border-radius:3px; background:var(--ib-bg-deep);
  border:1px solid var(--ib-line); display:grid; place-items:center;
  font-family:var(--ib-font-mono); font-size:.66rem; color:var(--ib-ink-muted); letter-spacing:.06em;
}

/* ---------- Provenance band ---------- */
.ib-fg-prov { background:var(--ib-emphasis-bg); color:var(--ib-emphasis-text); }
.ib-fg-prov .ib-fg-prov__grid {
  display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:2rem;
}
@media (max-width:900px){ .ib-fg-prov .ib-fg-prov__grid { grid-template-columns:repeat(2,minmax(0,1fr)); gap:1.6rem; } }
@media (max-width:520px){ .ib-fg-prov .ib-fg-prov__grid { grid-template-columns:1fr; } }
.ib-fg-prov__k {
  font-family:var(--ib-font-mono); font-size:.68rem; letter-spacing:.18em;
  text-transform:uppercase; color:var(--ib-gold);
}
.ib-fg-prov__v { font-size:.92rem; line-height:1.6; color:var(--ib-emphasis-text-soft); margin-top:.6rem; }

/* ---------- Curriculum mapping table ---------- */
.ib-fg-map { width:100%; border-collapse:collapse; margin-top:1rem; font-size:.88rem; }
.ib-fg-map th {
  text-align:left; font-size:.7rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--ib-ink-muted); font-weight:600; padding:.55rem .7rem;
  border-bottom:1px solid var(--ib-line-strong);
}
.ib-fg-map td { padding:.55rem .7rem; border-bottom:1px solid var(--ib-line); color:var(--ib-ink-soft); }
.ib-fg-map td:first-child { color:var(--ib-ink); font-weight:600; }

/* ---------- Volume page additions ---------- */
.ib-fg-stopbox {
  margin:2rem 0 0; padding:1.4rem 1.5rem; background:var(--ib-bg-deep);
  border:1px solid var(--ib-line); border-radius:var(--ib-radius);
}
.ib-fg-stopbox h3 { font-size:1rem; margin:0 0 .5rem; }
.ib-fg-stopbox p { margin:0; font-size:.92rem; color:var(--ib-ink-soft); line-height:1.6; }

.ib-fg-author {
  display:flex; gap:1.4rem; align-items:flex-start; margin-top:2.5rem;
  padding-top:2rem; border-top:1px solid var(--ib-line);
}
.ib-fg-author img { width:76px; height:76px; border-radius:999px; object-fit:cover; border:1px solid var(--ib-line-strong); flex:0 0 auto; }
.ib-fg-author__t { font-size:.95rem; color:var(--ib-ink-soft); line-height:1.65; }
.ib-fg-author__t b { color:var(--ib-ink); }

/* Sticky purchase bar on the volume pages */
.ib-fg-sticky {
  position:fixed; left:0; right:0; bottom:0; z-index:90;
  background:var(--ib-nav-bg); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--ib-line);
  transform:translateY(100%); transition:transform .25s ease;
}
.ib-fg-sticky.is-on { transform:translateY(0); }
.ib-fg-sticky__in {
  display:flex; align-items:center; justify-content:space-between; gap:1rem;
  padding:.7rem 0; min-height:64px;
}
.ib-fg-sticky__t { font-size:.92rem; font-weight:600; color:var(--ib-ink); line-height:1.3; }
.ib-fg-sticky__p { font-family:var(--ib-font-serif); font-size:1.2rem; font-weight:700; color:var(--ib-ink); }
.ib-fg-sticky__l { display:flex; align-items:baseline; gap:1rem; min-width:0; }
.ib-fg-sticky__l > * { white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
@media (min-width:900px){ .ib-fg-sticky { display:none; } }

/* ---------- Mobile ---------- */
@media (max-width:720px){
  .ib-vcard__body { padding:1.35rem 1.25rem 1.5rem; }
  .ib-vcard__foot { padding-top:1.15rem; }
  .ib-vcard__go {
    display:block; width:100%; text-align:center; border:1px solid var(--ib-ink);
    border-radius:var(--ib-radius-sm); padding:.85rem 1rem; min-height:48px; line-height:1.6;
  }
  .ib-vcard__foot { align-items:center; }
  .ib-vcard.is-beyond .ib-vcard__go { border-color:var(--ib-emphasis-line); }
  .ib-fg-curline { justify-content:flex-start; }
  .ib-fg-library__price { font-size:2rem; }
  .ib-fg-sticky__in { padding:.6rem 0; }
}

@media (prefers-reduced-motion:reduce){
  .ib-vcard, .ib-fg-sticky { transition:none; }
  .ib-vcard:hover { transform:none; }
}

/* ============================================================
   FIELD GUIDES, EDITION LAYER  ·  added 2026-08-09
   Two editions (Study, print) and (Screen, dark) made visible.
   Additive only. No new colour, radius, family or shadow token:
   everything below resolves to variables already in styles.css.
   ============================================================ */

/* ---------- the edition pair, inside the existing cover well ---------- */
.ib-vcard__cover{ padding:1.6rem 1.4rem 0; background:var(--ib-bg-deep);
  border-bottom:1px solid var(--ib-line); }
.ib-vcard__stage{ position:relative; aspect-ratio:1/.98; }
.ib-vcard__ed{ position:absolute; top:0; border-radius:4px; overflow:hidden;
  border:1px solid rgba(32,32,30,.12);
  box-shadow:0 10px 24px -12px rgba(32,32,30,.45);
  transition:transform .3s cubic-bezier(.22,.61,.36,1); }
[data-theme="dark"] .ib-vcard__ed{ border-color:rgba(242,239,232,.14);
  box-shadow:0 10px 24px -12px rgba(0,0,0,.75); }
/* beat the legacy cover rule, which crops to 1:1.414 */
.ib-vcard__cover .ib-vcard__ed img{ display:block; width:100%; height:auto;
  aspect-ratio:auto; object-fit:fill; object-position:center; }
.ib-vcard__ed--study { left:10%; width:66%; transform:rotate(-2deg); }
.ib-vcard__ed--screen{ left:24%; width:66%; transform:rotate(1.4deg); }
.ib-vcard:hover .ib-vcard__ed--study { transform:rotate(-3.2deg) translateX(-9%); }
.ib-vcard:hover .ib-vcard__ed--screen{ transform:rotate(2.2deg) translateX(6%); }
.ib-vcard.is-single .ib-vcard__ed--screen{ left:17%; transform:none; }
.ib-vcard.is-single:hover .ib-vcard__ed--screen{ transform:translateY(-4px); }

@media (min-width:721px){
  .ib-fg-grid.is-two .ib-vcard__stage{ aspect-ratio:1/.66; }
  .ib-fg-grid.is-two .ib-vcard__ed--study { left:19%; width:46%; }
  .ib-fg-grid.is-two .ib-vcard__ed--screen{ left:35%; width:46%; }
  .ib-fg-grid.is-two .ib-vcard.is-single .ib-vcard__ed--screen{ left:27%; }
}
.ib-vcard.is-beyond .ib-vcard__cover{ background:#2A2A27; border-bottom-color:rgba(245,241,235,.12); }
.ib-vcard.is-beyond .ib-vcard__ed{ border-color:rgba(245,241,235,.28);
  box-shadow:0 14px 32px -14px rgba(0,0,0,.9); }

/* ---------- the claim, stated under the evidence ---------- */
.ib-vcard__ed-line{ margin-top:.85rem; padding-top:.85rem;
  border-top:1px dashed var(--ib-line); display:flex; align-items:flex-start; gap:.55rem;
  font-size:.82rem; color:var(--ib-ink-soft); line-height:1.45; }
.ib-vcard__ed-line svg{ width:15px; height:15px; color:var(--ib-gold); flex:0 0 auto; margin-top:.15rem; }
.ib-vcard__ed-line b{ color:var(--ib-ink); font-weight:600; }
.ib-vcard__ed-line em{ font-style:normal; color:var(--ib-ink-muted); }
.ib-vcard.is-beyond .ib-vcard__ed-line{ border-top-color:var(--ib-emphasis-line);
  color:var(--ib-emphasis-text-soft); }
.ib-vcard.is-beyond .ib-vcard__ed-line b{ color:var(--ib-emphasis-text); }
.ib-vcard.is-beyond .ib-vcard__ed-line em{ color:var(--ib-emphasis-text-faint); }

/* ---------- the pair in the hero ---------- */
.ib-pair__stage{ position:relative; aspect-ratio:1/.86; }
.ib-pair__bk,.ib-pair__fr{ position:absolute; top:0; border-radius:6px; overflow:hidden;
  box-shadow:var(--ib-shadow-lg); border:1px solid var(--ib-line);
  transition:transform .32s cubic-bezier(.22,.61,.36,1); }
.ib-pair__bk{ left:14%; width:62%; transform:rotate(-2.2deg) translateX(-6%); }
.ib-pair__fr{ left:24%; width:62%; transform:rotate(1.6deg); }
.ib-pair img{ display:block; width:100%; height:auto; }
.ib-pair:hover .ib-pair__bk{ transform:rotate(-3.4deg) translateX(-16%); }
.ib-pair:hover .ib-pair__fr{ transform:rotate(2.4deg) translateX(8%); }
.ib-pair__tags{ display:flex; gap:.5rem; justify-content:center; margin-top:1.1rem; flex-wrap:wrap; }
.ib-pair__tag{ font-family:var(--ib-font-mono); font-size:.68rem; letter-spacing:.12em;
  text-transform:uppercase; color:var(--ib-ink-muted);
  border:1px solid var(--ib-line); border-radius:999px; padding:.3rem .7rem; }
.ib-pair__tag b{ color:var(--ib-ink); font-weight:500; }
.ib-pair__cap{ margin:.9rem 0 0; text-align:center; font-size:.9rem; color:var(--ib-ink-soft); }
.ib-pair__cap b{ color:var(--ib-ink); }

/* ---------- the two-editions band ---------- */
.ib-ed{ display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);
  gap:3rem; align-items:center; }
@media (max-width:900px){ .ib-ed{ grid-template-columns:1fr; gap:2rem; } }
.ib-ed__spreads{ display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
.ib-ed__fig{ margin:0; }
.ib-ed__fig img{ display:block; width:100%; height:auto; border-radius:6px;
  border:1px solid var(--ib-line); box-shadow:var(--ib-shadow); }
.ib-ed__fig figcaption{ margin-top:.65rem; font-family:var(--ib-font-mono); font-size:.68rem;
  letter-spacing:.14em; text-transform:uppercase; color:var(--ib-ink-muted); }
.ib-ed__fig figcaption b{ color:var(--ib-ink); font-weight:500; }
.ib-ed__list{ margin:1.6rem 0 0; padding:0; list-style:none; display:grid; gap:1rem; }
.ib-ed__list li{ display:grid; grid-template-columns:auto 1fr; gap:.75rem; align-items:start;
  font-size:.94rem; color:var(--ib-ink-soft); line-height:1.6; }
.ib-ed__list b{ color:var(--ib-ink); }
.ib-ed__dot{ width:9px; height:9px; border-radius:2px; margin-top:.5rem;
  border:1px solid var(--ib-line-strong); }
.ib-ed__note{ margin-top:1.6rem; padding-top:1.2rem; border-top:1px dashed var(--ib-line);
  font-size:.88rem; color:var(--ib-ink-soft); }

/* ---------- the year finder ---------- */
.ib-find{ display:flex; align-items:center; gap:.6rem; flex-wrap:wrap;
  padding-bottom:1.5rem; margin-bottom:2.5rem; border-bottom:1px solid var(--ib-line); }
.ib-find__lab{ font-family:var(--ib-font-mono); font-size:.7rem; letter-spacing:.16em;
  text-transform:uppercase; color:var(--ib-ink-muted); margin-right:.4rem; }
.ib-chip{ font:inherit; font-size:.85rem; color:var(--ib-ink-soft); background:var(--ib-card-bg);
  border:1px solid var(--ib-line); border-radius:999px; padding:.45rem .95rem; cursor:pointer;
  min-height:40px; transition:border-color .2s ease, color .2s ease; }
.ib-chip:hover{ border-color:var(--ib-line-strong); }
.ib-chip[aria-pressed="true"]{ border-color:var(--ib-ink); color:var(--ib-ink); font-weight:600; }
.ib-chip:focus-visible{ outline:2px solid var(--ib-accent); outline-offset:2px; }
.ib-find__count{ margin-left:auto; font-size:.82rem; color:var(--ib-ink-muted); }
.ib-vcard.is-out{ display:none; }
@media (max-width:720px){
  .ib-find{ flex-wrap:nowrap; overflow-x:auto; -webkit-overflow-scrolling:touch;
    scrollbar-width:none; padding-bottom:1rem; }
  .ib-find::-webkit-scrollbar{ display:none; }
  .ib-find__lab, .ib-find__count{ display:none; }
  .ib-chip{ flex:0 0 auto; }
}

/* ---------- what lands in the folder ---------- */
.ib-manifest{ margin-top:2.5rem; border:1px solid var(--ib-line); border-radius:var(--ib-radius);
  background:var(--ib-card-bg); padding:1.5rem 1.6rem; }
.ib-manifest__k{ font-family:var(--ib-font-mono); font-size:.7rem; letter-spacing:.16em;
  text-transform:uppercase; color:var(--ib-gold); }
.ib-manifest__rows{ margin-top:1rem; display:grid; gap:.55rem; }
.ib-manifest__row{ display:grid; grid-template-columns:auto 1fr auto; gap:.8rem; align-items:baseline;
  font-family:var(--ib-font-mono); font-size:.8rem; color:var(--ib-ink-soft);
  padding-bottom:.55rem; border-bottom:1px dashed var(--ib-line); }
.ib-manifest__row:last-child{ border-bottom:0; padding-bottom:0; }
.ib-manifest__row b{ color:var(--ib-ink); font-weight:500; }
.ib-manifest__sw{ width:11px; height:11px; border-radius:2px; align-self:center;
  border:1px solid var(--ib-line-strong); }

/* ---------- sticky buy bar on the collection page ---------- */
.ib-fg-cbar{ position:fixed; left:0; right:0; bottom:0; z-index:90;
  background:var(--ib-nav-bg); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--ib-line); transform:translateY(110%); transition:transform .25s ease; }
.ib-fg-cbar.is-on{ transform:translateY(0); }
.ib-fg-cbar__in{ display:flex; align-items:center; justify-content:space-between; gap:1rem;
  padding:.65rem 1.25rem; min-height:66px; max-width:1216px; margin:0 auto; }
.ib-fg-cbar__t{ font-size:.85rem; font-weight:600; line-height:1.25; min-width:0; }
.ib-fg-cbar__t span{ display:block; font-weight:400; font-size:.76rem; color:var(--ib-ink-muted); }
@media (min-width:900px){ .ib-fg-cbar{ display:none; } }

/* ---------- mobile: tighter gutter, primary action first ---------- */
@media (max-width:720px){
  .ib-fg-grid, .ib-fg-grid.is-two{ gap:2.5rem; }
  .ib-vcard__foot{ flex-direction:column; align-items:stretch; gap:.7rem; }
  .ib-vcard__foot .ib-btn{ width:100%; }
  .ib-vcard__go{ display:block; width:100%; text-align:center;
    border:1px solid var(--ib-line-strong); border-radius:999px;
    padding:.8rem 1rem; min-height:48px; line-height:1.6; }
  .ib-vcard.is-beyond .ib-vcard__go{ border-color:var(--ib-emphasis-line); }
  .ib-ed__spreads{ gap:.6rem; }
}

/* ============================================================
   LOOK INSIDE, the reader
   ============================================================ */
.ib-fgr{ position:fixed; inset:0; z-index:200; background:var(--ib-bg);
  display:none; flex-direction:column; }
.ib-fgr.is-on{ display:flex; }
body.ib-fgr-open{ overflow:hidden; }

.ib-fgr__top{ display:flex; align-items:center; gap:1rem; padding:.85rem 1.5rem;
  border-bottom:1px solid var(--ib-line); background:var(--ib-nav-bg);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px); flex-wrap:wrap; }
.ib-fgr__close{ display:inline-flex; align-items:center; gap:.5rem; font:inherit; font-size:.88rem;
  color:var(--ib-ink-soft); border:1px solid var(--ib-line); border-radius:999px;
  padding:.5rem .9rem; min-height:40px; background:none; cursor:pointer; }
.ib-fgr__close:hover{ border-color:var(--ib-line-strong); color:var(--ib-ink); }
.ib-fgr__id{ min-width:0; }
.ib-fgr__id .k{ font-family:var(--ib-font-mono); font-size:.68rem; letter-spacing:.18em;
  text-transform:uppercase; color:var(--ib-gold); }
.ib-fgr__id .t{ font-size:1.05rem; font-weight:600; line-height:1.3; color:var(--ib-ink); }
.ib-fgr__id .l{ font-size:.78rem; color:var(--ib-ink-muted); }
.ib-fgr__sp{ flex:1; }

.ib-fgr__ed{ display:inline-flex; align-items:center; gap:.6rem; }
.ib-fgr__edlab{ font-family:var(--ib-font-mono); font-size:.66rem; letter-spacing:.16em;
  text-transform:uppercase; color:var(--ib-ink-muted); }
.ib-fgr__seg{ display:inline-flex; border:1px solid var(--ib-line-strong); border-radius:999px;
  padding:3px; background:var(--ib-card-bg); }
.ib-fgr__seg button{ font:inherit; font-size:.84rem; font-weight:600; color:var(--ib-ink-muted);
  background:none; border:0; border-radius:999px; padding:.45rem .95rem; cursor:pointer;
  min-height:38px; display:inline-flex; align-items:center; gap:.45rem;
  transition:color .2s ease, background-color .2s ease; }
.ib-fgr__sw{ width:11px; height:11px; border-radius:2px; border:1px solid rgba(32,32,30,.28); }
.ib-fgr__seg button[aria-pressed="true"]{ background:var(--ib-ink); color:var(--ib-bg); }
.ib-fgr__seg button[aria-pressed="true"] .ib-fgr__sw{ border-color:rgba(255,255,255,.5); }
.ib-fgr__both{ font:inherit; font-size:.82rem; color:var(--ib-ink-soft); background:none;
  border:0; border-bottom:1px solid var(--ib-gold); cursor:pointer; padding:0 0 2px; }
.ib-fgr__both:hover{ color:var(--ib-accent); }
.ib-fgr__both[aria-pressed="true"]{ color:var(--ib-accent); border-color:var(--ib-accent); }

.ib-fgr__body{ flex:1; display:grid; grid-template-columns:196px minmax(0,1fr); min-height:0; }
.ib-fgr__rail{ border-right:1px solid var(--ib-line); overflow-y:auto;
  padding:1.1rem .9rem 2rem; background:var(--ib-bg-soft); }
.ib-fgr__railk{ font-family:var(--ib-font-mono); font-size:.64rem; letter-spacing:.16em;
  text-transform:uppercase; color:var(--ib-ink-muted); padding:0 .3rem .7rem; }
.ib-fgr__th{ display:block; width:100%; text-align:left; background:none; border:0;
  padding:.4rem .3rem .9rem; cursor:pointer; font:inherit; }
.ib-fgr__th img{ display:block; width:100%; height:auto; border-radius:4px;
  border:1px solid var(--ib-line); box-shadow:var(--ib-shadow); transition:border-color .2s ease; }
.ib-fgr__th figcaption{ margin-top:.45rem; font-family:var(--ib-font-mono); font-size:.62rem;
  letter-spacing:.1em; color:var(--ib-ink-muted); text-transform:uppercase; }
.ib-fgr__th[aria-current="true"] img{ border-color:var(--ib-accent);
  box-shadow:0 0 0 2px var(--ib-accent-soft); }
.ib-fgr__th[aria-current="true"] figcaption{ color:var(--ib-ink); }
.ib-fgr__th:hover img{ border-color:var(--ib-line-strong); }

.ib-fgr__stage{ position:relative; overflow-y:auto; padding:2rem 2rem 3rem; background:var(--ib-bg-deep); }
.ib-fgr__pg{ max-width:760px; margin:0 auto; }
.ib-fgr__frame{ position:relative; border-radius:6px; overflow:hidden; box-shadow:var(--ib-shadow-lg);
  border:1px solid var(--ib-line); width:min(100%, calc((100vh - 300px) / 1.414)); margin:0 auto; }
.ib-fgr__frame img{ display:block; width:100%; height:auto; }
.ib-fgr__frame img.b{ position:absolute; inset:0; opacity:0; transition:opacity .28s ease; }
.ib-fgr__frame.show-b img.b{ opacity:1; }
.ib-fgr__split{ display:none; grid-template-columns:1fr 1fr; gap:1rem;
  max-width:min(100%, calc(((100vh - 300px) / 1.414) * 2 + 1rem)); margin:0 auto; }
.ib-fgr__pg.is-split .ib-fgr__frame{ display:none; }
.ib-fgr__pg.is-split .ib-fgr__split{ display:grid; }
.ib-fgr__split figure{ margin:0; }
.ib-fgr__split img{ display:block; width:100%; height:auto; border-radius:6px;
  border:1px solid var(--ib-line); box-shadow:var(--ib-shadow); }
.ib-fgr__split figcaption{ margin-top:.55rem; font-family:var(--ib-font-mono); font-size:.66rem;
  letter-spacing:.14em; text-transform:uppercase; color:var(--ib-ink-muted); text-align:center; }

.ib-fgr__meta{ display:flex; align-items:center; justify-content:space-between; gap:1rem;
  margin-top:1.1rem; flex-wrap:wrap; }
.ib-fgr__cap{ font-size:.88rem; color:var(--ib-ink-soft); }
.ib-fgr__cap b{ color:var(--ib-ink); }
.ib-fgr__nav{ display:flex; align-items:center; gap:.5rem; }
.ib-fgr__nav button{ width:40px; height:40px; border-radius:999px;
  border:1px solid var(--ib-line-strong); background:var(--ib-card-bg); color:var(--ib-ink);
  cursor:pointer; display:grid; place-items:center; }
.ib-fgr__nav button:disabled{ opacity:.35; cursor:default; }
.ib-fgr__pos{ font-family:var(--ib-font-mono); font-size:.72rem; color:var(--ib-ink-muted);
  letter-spacing:.08em; padding:0 .35rem; }

.ib-fgr__gate{ max-width:760px; margin:2.5rem auto 0; border:1px solid var(--ib-line);
  border-radius:var(--ib-radius); background:var(--ib-card-bg); padding:1.75rem;
  display:grid; grid-template-columns:auto minmax(0,1fr) auto; gap:1.5rem; align-items:center; }
.ib-fgr__gpair{ position:relative; width:96px; height:110px; }
.ib-fgr__gpair div{ position:absolute; top:0; width:64px; border-radius:4px; overflow:hidden;
  border:1px solid var(--ib-line); box-shadow:var(--ib-shadow); }
.ib-fgr__gpair .s{ left:0; transform:rotate(-3deg); }
.ib-fgr__gpair .d{ left:28px; transform:rotate(2deg); }
.ib-fgr__gpair.is-single .d{ left:14px; transform:none; }
.ib-fgr__gpair img{ display:block; width:100%; height:auto; }
.ib-fgr__gate h2{ font-size:1.15rem; font-weight:600; margin:0; }
.ib-fgr__gate p{ margin:.45rem 0 0; font-size:.9rem; color:var(--ib-ink-soft); line-height:1.6; }
.ib-fgr__buy{ display:flex; flex-direction:column; align-items:flex-end; gap:.6rem; }
.ib-fgr__price{ font-size:1.7rem; font-weight:800; letter-spacing:-.02em; color:var(--ib-ink); }
.ib-fgr__buy small{ font-size:.74rem; color:var(--ib-ink-muted); }

.ib-fgr__foot{ display:none; }
@media (max-width:920px){
  .ib-fgr__top{ padding:.7rem 1rem; gap:.65rem; }
  .ib-fgr__top .ib-fgr__ed, .ib-fgr__top .ib-btn{ display:none; }
  .ib-fgr__body{ grid-template-columns:1fr; }
  .ib-fgr__rail{ border-right:0; border-bottom:1px solid var(--ib-line);
    display:block; overflow-x:hidden; padding:.9rem 1rem; }
  .ib-fgr__rail [data-thumbs]{ display:flex; gap:.7rem; overflow-x:auto;
    scroll-snap-type:x mandatory; -webkit-overflow-scrolling:touch;
    scrollbar-width:none; }
  .ib-fgr__rail [data-thumbs]::-webkit-scrollbar{ display:none; }
  .ib-fgr__railk{ display:none; }
  .ib-fgr__th{ width:74px; flex:0 0 auto; padding:0; scroll-snap-align:center; }
  .ib-fgr__th figcaption{ text-align:center; }
  .ib-fgr__stage{ padding:1.1rem 1rem 9rem; }
  .ib-fgr__frame{ width:100%; }
  .ib-fgr__split{ grid-template-columns:1fr; max-width:100%; }
  .ib-fgr__gate{ grid-template-columns:1fr; gap:1.1rem; padding:1.4rem; }
  .ib-fgr__gpair{ margin:0 auto; }
  .ib-fgr__buy{ align-items:stretch; }
  .ib-fgr__buy .ib-btn{ width:100%; }
  .ib-fgr__foot{ display:block; position:fixed; left:0; right:0; bottom:0; z-index:210;
    background:var(--ib-nav-bg); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
    border-top:1px solid var(--ib-line);
    padding:.6rem 1rem calc(.6rem + env(safe-area-inset-bottom)); }
  .ib-fgr__foot .ib-fgr__ed{ display:flex; width:100%; }
  .ib-fgr__foot .ib-fgr__edlab{ display:none; }
  .ib-fgr__foot .ib-fgr__seg{ flex:1; }
  .ib-fgr__foot .ib-fgr__seg button{ flex:1; justify-content:center; }
  .ib-fgr__footrow{ display:flex; gap:.6rem; align-items:center; margin-top:.55rem; }
  .ib-fgr__footrow .ib-btn{ flex:1; }
  .ib-fgr__footrow .ib-fgr__both{ white-space:nowrap; }
}

/* the strip that opens the reader, on a volume page */
.ib-look{ display:grid; grid-template-columns:repeat(6,minmax(0,1fr)); gap:.75rem; margin-top:1rem; }
@media (max-width:820px){ .ib-look{ grid-template-columns:repeat(3,minmax(0,1fr)); } }
.ib-look button{ display:block; padding:0; border:0; background:none; cursor:pointer; width:100%; }
.ib-look img{ display:block; width:100%; height:auto; border-radius:4px;
  border:1px solid var(--ib-line); box-shadow:var(--ib-shadow); transition:border-color .2s ease; }
.ib-look button:hover img{ border-color:var(--ib-line-strong); }
.ib-look__more{ margin-top:1rem; }

@media (prefers-reduced-motion:reduce){
  .ib-vcard__ed, .ib-pair__bk, .ib-pair__fr, .ib-fg-cbar, .ib-fgr__frame img.b{ transition:none; }
  .ib-vcard:hover .ib-vcard__ed--study { transform:rotate(-2deg); }
  .ib-vcard:hover .ib-vcard__ed--screen{ transform:rotate(1.4deg); }
  .ib-pair:hover .ib-pair__bk{ transform:rotate(-2.2deg) translateX(-6%); }
  .ib-pair:hover .ib-pair__fr{ transform:rotate(1.6deg); }
}

/* Look inside is a control now, not a link: reset the UA button box. */
.ib-vcard__go{ background:none; border:0; padding:0 0 2px; font:inherit; font-size:.88rem;
  font-weight:600; color:var(--ib-ink); border-bottom:1px solid var(--ib-gold); cursor:pointer;
  border-radius:0; }
.ib-vcard__go:hover{ color:var(--ib-accent); border-bottom-color:var(--ib-accent); }
.ib-vcard.is-beyond .ib-vcard__go{ color:var(--ib-emphasis-text); border-bottom-color:var(--ib-gold); }
.ib-vcard__go:focus-visible{ outline:2px solid var(--ib-accent); outline-offset:3px; }
@media (max-width:720px){
  .ib-vcard__go{ border:1px solid var(--ib-line-strong); border-radius:999px; }
  .ib-vcard.is-beyond .ib-vcard__go{ border-color:var(--ib-emphasis-line); }
}


/* =================================================================
   Complete Library, contents manifest (2026-08-10)
   Replaces the old three-row .ib-manifest. A buyer must be able to
   see every volume and which editions of it are in the download
   BEFORE paying, so this is plain static markup, not JS-rendered.
   ================================================================= */
.ib-libman{ margin-top:2.5rem; border:1px solid var(--ib-line); border-radius:var(--ib-radius);
  background:var(--ib-card-bg); padding:1.6rem 1.7rem 1.5rem; }
.ib-libman__head{ display:flex; align-items:baseline; justify-content:space-between;
  gap:1rem; flex-wrap:wrap; }
.ib-libman__k{ font-family:var(--ib-font-mono); font-size:.7rem; letter-spacing:.16em;
  text-transform:uppercase; color:var(--ib-gold); }
.ib-libman__tot{ font-family:var(--ib-font-mono); font-size:.74rem; letter-spacing:.06em;
  color:var(--ib-ink-soft); }
.ib-libman__legend{ display:flex; gap:1.4rem; flex-wrap:wrap; margin-top:.9rem;
  padding-bottom:.9rem; border-bottom:1px dashed var(--ib-line);
  font-size:.78rem; color:var(--ib-ink-muted); }
.ib-libman__legend span{ display:inline-flex; align-items:center; gap:.45rem; }

.ib-libman__list{ list-style:none; margin:0; padding:0; }
.ib-libman__row{ display:grid; grid-template-columns:2.1rem minmax(0,1fr) auto auto;
  gap:.9rem; align-items:center; padding:.7rem 0;
  border-bottom:1px dashed var(--ib-line); }
.ib-libman__row:last-child{ border-bottom:0; padding-bottom:0; }
.ib-libman__vol{ font-family:var(--ib-font-mono); font-size:.76rem; letter-spacing:.06em;
  color:var(--ib-ink-muted); text-align:right; }
.ib-libman__t{ display:flex; flex-direction:column; gap:.1rem; min-width:0; }
.ib-libman__t b{ font-size:.94rem; font-weight:600; color:var(--ib-ink); line-height:1.3; }
.ib-libman__t em{ font-style:normal; font-size:.78rem; color:var(--ib-ink-muted); }
.ib-libman__pp{ font-family:var(--ib-font-mono); font-size:.74rem; color:var(--ib-ink-muted);
  white-space:nowrap; }
.ib-libman__ed{ display:flex; align-items:center; gap:.35rem; flex-wrap:wrap;
  justify-content:flex-end; }
.ib-libman__ed em{ font-style:normal; font-size:.72rem; color:var(--ib-ink-muted); }
.ib-libman__note{ margin:1.1rem 0 0; padding-top:1rem; border-top:1px dashed var(--ib-line);
  font-size:.86rem; line-height:1.6; color:var(--ib-ink-soft); }

/* Edition chips, shared by the manifest and the checkout drawer. */
.ib-edchip{ font-style:normal; font-family:var(--ib-font-mono); font-size:.64rem;
  letter-spacing:.1em; text-transform:uppercase; padding:.24rem .5rem; border-radius:4px;
  border:1px solid var(--ib-line-strong); white-space:nowrap; line-height:1; }
.ib-edchip--study{ background:#EDE7DA; color:#4A4034; border-color:#DCD2BF; }
.ib-edchip--screen{ background:#0C1420; color:#C6D5E6; border-color:#243448; }

@media (max-width:640px){
  .ib-libman{ padding:1.3rem 1.1rem; }
  .ib-libman__row{ grid-template-columns:1.7rem minmax(0,1fr); row-gap:.35rem; }
  .ib-libman__pp{ grid-column:2; }
  .ib-libman__ed{ grid-column:2; justify-content:flex-start; }
}

/* ---------- the same contents, inside the checkout drawer ---------- */
.ib-co__incl{ margin:-.6rem 0 1.4rem; border:1px solid var(--ib-line);
  border-radius:var(--ib-radius); background:var(--ib-bg-soft); padding:.9rem 1rem; }
.ib-co__incl-tot{ font-family:var(--ib-font-mono); font-size:.72rem; letter-spacing:.06em;
  color:var(--ib-ink); }
.ib-co__incl-ed{ margin-top:.4rem; font-size:.78rem; line-height:1.5; color:var(--ib-ink-soft); }
.ib-co__incl details{ margin-top:.6rem; }
.ib-co__incl summary{ cursor:pointer; font-size:.78rem; color:var(--ib-accent);
  list-style:none; display:inline-flex; align-items:center; gap:.3rem; }
.ib-co__incl summary::-webkit-details-marker{ display:none; }
.ib-co__incl summary::after{ content:"\203A"; transform:rotate(90deg); display:inline-block;
  transition:transform .18s ease; }
.ib-co__incl details[open] summary::after{ transform:rotate(-90deg); }
.ib-co__incl ol{ list-style:none; margin:.6rem 0 0; padding:0; }
.ib-co__incl li{ display:grid; grid-template-columns:1.9rem minmax(0,1fr) auto;
  gap:.6rem; align-items:center; padding:.45rem 0;
  border-top:1px dashed var(--ib-line); font-size:.8rem; }
.ib-co__incl li .v{ font-family:var(--ib-font-mono); font-size:.7rem;
  color:var(--ib-ink-muted); text-align:right; }
.ib-co__incl li .t{ color:var(--ib-ink); line-height:1.35; min-width:0; }
.ib-co__incl li .t span{ display:block; font-size:.72rem; color:var(--ib-ink-muted); }
.ib-co__incl li .e{ display:flex; gap:.25rem; flex-wrap:wrap; justify-content:flex-end; }