/* Scanpiece: a full-width view of a real page scan with parallax, and a
   plate of text laid over it. Two kinds:
   .scanpiece            wide scan (a spread, a fold-out), plate bottom-left
   .scanpiece.quote      a page with a passage marked on it; the plate carries
                         the transcription and the translation, and a hairline
                         ties the plate to the marked lines
   The image drifts with data-parallax (assets/parallax.js). It is taller than
   the band; --focus sets which part of the page sits in view (0 top, 1 bottom).
   The mark is positioned in page percentages, so it stays on its lines at any
   viewport. */
.scanpiece{position:relative;width:100vw;margin-left:calc(50% - 50vw);height:clamp(480px,88vh,900px);overflow:hidden;background:#d9d2c3;margin-top:var(--fo-7,84px);isolation:isolate}
.scanpiece .scan{position:absolute;left:0;top:0;width:100%;height:100%;overflow:hidden}
.scanpiece .scan img{position:absolute;left:0;top:-14%;width:100%;height:128%;object-fit:cover;object-position:var(--focus-x,50%) var(--focus-y,50%);display:block;will-change:transform;max-width:none}
.scanpiece .scan::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,18,14,.18),transparent 26%,transparent 70%,rgba(20,18,14,.26));pointer-events:none}
.scanpiece .tag{position:absolute;top:0;left:0;z-index:3;background:var(--fo-brand,#2742c9);color:#fff;font-size:10.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;padding:9px 14px}
.scanpiece .plate{position:absolute;z-index:3;bottom:0;left:0;width:min(600px,86%);background:var(--fo-paper,#fff);padding:32px 38px 28px;box-shadow:0 30px 60px -30px rgba(0,0,0,.4)}
.scanpiece.right .plate{left:auto;right:0}
.scanpiece .plate .k{display:block;font-family:var(--serif);font-weight:600;font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.scanpiece .plate p{font-family:var(--serif);font-size:clamp(17px,1.55vw,22px);line-height:1.5;color:var(--text)}
.scanpiece .plate .src{display:block;margin-top:14px;font-size:13px;color:var(--muted);line-height:1.5}
.scanpiece .plate .src a{color:inherit}

/* quote kind: the page is shown upright; a mark sits on the passage */
.scanpiece.quote{height:clamp(560px,96vh,980px)}
.scanpiece.quote .scan img{--img-h:auto}
.scanpiece.quote .pagewrap{position:absolute;inset:0;display:grid;place-items:center start;padding-left:clamp(24px,5vw,80px);overflow:visible}
.scanpiece.quote .page{position:relative;height:calc(100% + 14%);margin-top:var(--shift,0px);aspect-ratio:var(--page-ar,0.786);will-change:transform;box-shadow:0 40px 80px -30px rgba(0,0,0,.45)}
.scanpiece.quote .page img{position:absolute;inset:0;width:100%;height:100%;display:block;max-width:none}
.scanpiece.quote .mark{position:absolute;border:1.5px solid var(--fo-brand,#2742c9);background:rgba(39,66,201,.08);box-shadow:0 0 0 6px rgba(255,255,255,.35);opacity:0;transition:opacity .8s ease .3s}
.scanpiece.quote.play .mark{opacity:1}
.scanpiece.quote .mark::before{content:attr(data-n);position:absolute;left:-1.5px;bottom:100%;margin-bottom:6px;background:var(--fo-brand,#2742c9);color:#fff;font-size:9.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;padding:3px 8px;white-space:nowrap}
.scanpiece.quote .plate{width:min(560px,86%);left:auto;right:clamp(0px,4vw,64px);bottom:auto;top:50%;transform:translateY(-50%);padding:34px 40px 30px}
.scanpiece.quote .plate .la{font-family:var(--serif);font-size:15px;line-height:1.55;color:var(--muted);margin-bottom:16px;padding-bottom:16px;border-bottom:1px solid #e6e3da}
.scanpiece.quote .plate .la i{font-style:normal;color:var(--text)}
.scanpiece.quote .plate p{font-size:clamp(18px,1.7vw,24px)}
.scanpiece.quote .plate .toggle{display:inline-flex;gap:4px;margin-top:16px;border:1px solid #dcdcdc;padding:3px;font-size:10px;font-weight:700;letter-spacing:.12em}
.scanpiece.quote .plate .toggle span{padding:4px 10px;color:var(--muted)}
.scanpiece.quote .plate .toggle span.on{background:#14151a;color:#fff}
.scanpiece.quote .lead{position:absolute;z-index:2;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.scanpiece.quote .lead path{fill:none;stroke:var(--fo-brand,#2742c9);stroke-width:1;stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset 1.1s ease .6s}
.scanpiece.quote.play .lead path{stroke-dashoffset:0}
.scanpiece.quote .lead circle{fill:var(--fo-brand,#2742c9)}

/* the object stage (3D book) */
.bookstage{position:relative;margin:18px -6px 0;background:linear-gradient(180deg,#f4f1ea,#e6e1d6);border:1px solid #ddd8cc;height:min(74vh,720px);overflow:hidden}
.bookstage .bk-canvas{position:absolute;inset:0;cursor:grab;touch-action:none}
.bookstage .bk-canvas:active{cursor:grabbing}
.bookstage .bk-canvas canvas{display:block;width:100%;height:100%}
.bookstage .bk-ui{position:absolute;left:0;right:0;bottom:0;display:flex;justify-content:space-between;align-items:flex-end;padding:18px 22px;gap:14px;pointer-events:none}
.bookstage .bk-steps{display:flex;gap:4px;background:rgba(255,255,255,.86);backdrop-filter:blur(10px);padding:4px;border:1px solid rgba(0,0,0,.08);pointer-events:auto}
.bookstage .bk-steps button,.bookstage .bk-ex{font:600 11px/1 var(--sans);letter-spacing:.1em;text-transform:uppercase;padding:10px 14px;border:0;background:transparent;color:var(--muted);cursor:pointer}
.bookstage .bk-steps button.on{background:#14151a;color:#fff}
.bookstage .bk-ex{pointer-events:auto;background:rgba(255,255,255,.86);border:1px solid rgba(0,0,0,.08);color:var(--text)}
.bookstage .bk-ex.on{background:var(--fo-brand,#2742c9);color:#fff;border-color:transparent}
.bookstage .bk-cap{position:absolute;left:22px;top:18px;font-size:12px;color:var(--muted);line-height:1.5;max-width:340px}
.bookstage .bk-cap b{display:block;color:var(--text);font-weight:600;font-size:13px}
.bookstage .bk-hint{position:absolute;right:22px;top:18px;font-family:var(--serif);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.bookstage.no3d .bk-ui,.bookstage.no3d .bk-hint{display:none}
.bookstage.no3d{background:url('welling-spread.jpg') center/cover}
@media (max-width:820px){
  .scanpiece{height:clamp(420px,70vh,640px)}
  .scanpiece .plate{width:100%;padding:22px 20px 20px}
  .scanpiece.quote{height:auto;min-height:0;background:var(--fo-paper,#fff)}
  .scanpiece.quote .pagewrap{position:relative;display:block}
  .scanpiece.quote .pagewrap{padding:0}
  .scanpiece.quote .page{height:auto;width:100%;margin-top:0;aspect-ratio:var(--page-ar,0.786)}
  .scanpiece.quote .plate{position:relative;top:auto;transform:none;width:100%}
  .scanpiece.quote .lead{display:none}
  .bookstage{height:70vh;margin:18px 0 0}
  .bookstage .bk-cap{max-width:60%}
  .bookstage .bk-steps button{padding:9px 9px;letter-spacing:.06em;font-size:10px}
}
@media (prefers-reduced-motion:reduce){
  .scanpiece.quote .mark{transition:none;opacity:1}
  .scanpiece.quote .lead path{transition:none;stroke-dashoffset:0}
}

/* the shelf stage */
.bookshelf{position:relative;margin:18px -6px 0;background:linear-gradient(180deg,#f3f0e9,#e8e3d9);border:1px solid #ddd8cc;height:min(78vh,760px);overflow:hidden}
.bookshelf .bk-canvas{position:absolute;inset:0;touch-action:none}
.bookshelf .bk-canvas canvas{display:block;width:100%;height:100%}
.bookshelf .bk-choose{position:absolute;left:22px;top:20px;display:flex;flex-direction:column;gap:6px;z-index:2}
.bookshelf .bk-choose .lb{font-family:var(--serif);font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.bookshelf .bk-choose button{text-align:left;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);border:1px solid rgba(0,0,0,.08);padding:10px 14px;cursor:pointer;font-family:var(--sans);color:var(--text);min-width:250px}
.bookshelf .bk-choose button b{display:block;font-size:13px;font-weight:600}
.bookshelf .bk-choose button span{display:block;font-size:11.5px;color:var(--muted);margin-top:2px}
.bookshelf .bk-choose button.on{border-color:var(--fo-brand,#2742c9);box-shadow:inset 3px 0 0 var(--fo-brand,#2742c9)}
.bookshelf .bk-hint{position:absolute;left:50%;bottom:20px;transform:translateX(-50%);font-family:var(--serif);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);z-index:2;transition:opacity .4s}
.bookshelf.chosen .bk-hint{opacity:0}
.bookshelf .bk-ui{position:absolute;left:22px;bottom:20px;display:flex;align-items:center;gap:10px;z-index:2;opacity:0;transform:translateY(8px);transition:opacity .4s,transform .4s;pointer-events:none}
.bookshelf.chosen .bk-ui{opacity:1;transform:none;pointer-events:auto}
.bookshelf .bk-steps{display:flex;gap:4px;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);padding:4px;border:1px solid rgba(0,0,0,.08)}
.bookshelf .bk-steps button,.bookshelf .bk-ex,.bookshelf .bk-back{font:600 11px/1 var(--sans);letter-spacing:.1em;text-transform:uppercase;padding:10px 14px;border:0;background:transparent;color:var(--muted);cursor:pointer}
.bookshelf .bk-steps button.on{background:#14151a;color:#fff}
.bookshelf .bk-ex,.bookshelf .bk-back{background:rgba(255,255,255,.88);border:1px solid rgba(0,0,0,.08);color:var(--text)}
.bookshelf .bk-ex.on{background:var(--fo-brand,#2742c9);color:#fff;border-color:transparent}
.bookshelf .bk-notes{position:absolute;right:22px;top:20px;width:min(330px,40%);background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border:1px solid rgba(0,0,0,.08);padding:20px 22px 18px;z-index:2;opacity:0;transform:translateY(8px);transition:opacity .45s,transform .45s;pointer-events:none}
.bookshelf.chosen .bk-notes{opacity:1;transform:none;pointer-events:auto}
.bookshelf .bk-notes.in .t{animation:bkIn .5s ease both}
@keyframes bkIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.bookshelf .bk-notes .who{display:block;font-size:11.5px;color:var(--muted);line-height:1.45;padding-bottom:12px;margin-bottom:12px;border-bottom:1px solid #e6e3da}
.bookshelf .bk-notes .who b{display:block;color:var(--text);font-weight:600;font-size:13.5px}
.bookshelf .bk-notes .k{display:block;font-family:var(--serif);font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.bookshelf .bk-notes .t{font-family:var(--serif);font-size:14.5px;line-height:1.55;color:var(--text)}
.bookshelf .bk-notes .t i{font-style:normal;color:var(--muted)}
.bookshelf .bk-notes .t em{font-style:italic}
.bookshelf .bk-notes .src{display:block;margin-top:10px;font-size:11px;color:var(--muted);line-height:1.45}
.bookshelf.no3d .bk-choose,.bookshelf.no3d .bk-ui,.bookshelf.no3d .bk-notes,.bookshelf.no3d .bk-hint{display:none}
.bookshelf.no3d{background:url('welling-spread.jpg') center/cover}
@media (max-width:820px){
  .bookshelf{height:80vh;margin:18px 0 0}
  .bookshelf .bk-choose{left:12px;top:12px}.bookshelf .bk-choose button{min-width:0;padding:8px 10px}
  .bookshelf .bk-notes{right:12px;left:12px;top:auto;bottom:70px;width:auto;padding:14px 16px}
  .bookshelf .bk-notes .t{font-size:13px}
  .bookshelf .bk-ui{left:12px;bottom:12px;flex-wrap:wrap}
}

/* cross links between the artifact pages */
.xnav-head{margin:76px 0 -58px;font-family:var(--sans);font-weight:600;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.xnav{grid-template-columns:repeat(2,1fr)!important}
.xnav a{position:relative;padding:0!important;overflow:hidden}
.xnav a .xv{display:block;aspect-ratio:3/2;background:#e9e4da center/cover}
.xnav a:hover .xv{filter:saturate(1.05)}
.xnav a .xt{display:block;padding:18px 22px 22px}
.xnav a .xt b{font-size:16px}
.xnav a .xt span{display:block;font-size:13.5px;line-height:1.5;color:var(--muted);margin-top:6px}
.xnav a .xt em{display:block;margin-top:12px;font-style:normal;font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--fo-brand-deep,#1d3399)}
.xnav a.here .xt em{color:var(--muted)}

/* self-playing rail: normal page flow, the hero is one screen */
.rail.auto{height:100svh}
.rail.auto .rail-hint{display:none}

/* Specimen table. Every object keeps its own proportion: widths inside a row grow in
   proportion to the aspect ratio, so one row shares a height and nothing is cropped to fit.
   A 4.8 metre handscroll is allowed to be a strip; a stela is allowed to be tall. */
.forms{margin:34px 0 0}
.forms-row{display:flex;gap:18px;align-items:flex-start;margin-bottom:34px}
.forms-row:last-child{margin-bottom:0}
.forms-item{flex:var(--ar) 1 0;min-width:0}
.forms-item .im{display:flex;align-items:center;justify-content:center;background:#f0f1f5;border:1px solid var(--edge);aspect-ratio:var(--ar)}
.forms-item img{display:block;width:100%;height:100%;object-fit:contain}
.forms-item b{display:block;font-size:14.5px;font-weight:650;letter-spacing:-.01em;margin:12px 0 4px}
.forms-item span{display:block;font-size:12.5px;line-height:1.5;color:var(--muted)}
.forms-item .dim{display:block;font-size:10.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--fo-faint,#9a9ca8);margin-top:7px}
.forms-strip{display:block}
.forms-strip .im{background:#f0f1f5}
.forms-strip .tx{display:flex;gap:18px;align-items:baseline;flex-wrap:wrap;margin-top:12px}
.forms-strip b{margin:0}
.forms-strip span{max-width:52ch}
@media (max-width:900px){
  .forms-row{flex-wrap:wrap;gap:14px 14px;margin-bottom:26px}
  .forms-item{flex:1 1 calc(50% - 7px)}
  .forms-item .im{aspect-ratio:auto;height:190px}
  .forms-item img{object-fit:contain}
}