/* A real hinged CSS volume. All faces use the actual annotated PDF artwork. */
.volume-stage{--bw:min(232px,39vw);--bh:calc(var(--bw)*1.4142);height:calc(var(--bh) + 108px);position:relative;display:grid;place-items:center;perspective:1500px;isolation:isolate;margin:18px auto 10px;width:100%;max-width:720px}
.volume-trigger{position:relative;width:var(--bw);height:var(--bh);border:0;background:none;padding:0;perspective:1500px;transform-style:preserve-3d;z-index:2;outline-offset:22px!important;-webkit-tap-highlight-color:transparent}
.volume-trigger:disabled{opacity:1;cursor:default}.volume-trigger:not(:disabled):hover .archive-volume{transform:translateY(-5px) rotateX(8deg) rotateY(-13deg)}
.archive-volume{width:100%;height:100%;position:relative;display:block;transform-style:preserve-3d;transform:rotateX(8deg) rotateY(-20deg);transition:transform 2.1s cubic-bezier(.22,.68,.2,1)}
.archive-volume>span{position:absolute;display:block;transform-style:preserve-3d}
.archive-volume.open{transform:translateX(44%) rotateX(7deg) rotateY(-7deg)}
.volume-backboard{inset:-3px -4px -3px -3px;background:#1c4148;border-radius:2px 5px 5px 2px;border:1px solid #8d805d;transform:translateZ(-13px);box-shadow:10px 20px 27px #0009}
.volume-spine{left:-12px;top:-3px;width:15px;height:calc(100% + 6px);background:linear-gradient(90deg,#101f22,#36606a 35%,#182e34);color:#bca77a;writing-mode:vertical-rl;font-size:7px;letter-spacing:.23em;text-align:center;transform-origin:right;transform:rotateY(-90deg);border-top:6px double #b3a07860;border-bottom:6px double #b3a07860}
.volume-block{inset:3px -1px 3px 2px;background:repeating-linear-gradient(0deg,#c7bfac 0 1px,#eee9dc 1px 3px);transform:translateZ(-5px);border-radius:0 3px 3px 0;box-shadow:5px 0 0 #d2cbb9,7px 1px 0 #aaa493,9px 2px 0 #e4decb,10px 3px 0 #aca691}
.volume-reading{inset:4px 2px 4px 4px;background:#f7f6f1;transform:translateZ(0);overflow:hidden;border-radius:0 3px 3px 0}
.volume-reading img{width:100%;height:100%;display:block;object-fit:cover}.page-fold{position:absolute;inset:0;background:linear-gradient(90deg,#10242d55,transparent 13%,transparent 92%,#8b765e15);pointer-events:none}
.volume-cover{inset:-3px -4px -3px -3px;transform-origin:0 50%;transform:translateZ(6px) rotateY(0deg);transition:transform 2.15s cubic-bezier(.3,.05,.16,1);border-radius:2px 5px 5px 2px}
.cover-front,.cover-back{position:absolute;inset:0;display:block;backface-visibility:hidden;-webkit-backface-visibility:hidden;overflow:hidden;border-radius:2px 5px 5px 2px;border:1px solid #8c8369}
.cover-front{background:#f7f6f1;box-shadow:inset 4px 0 7px #0005}.cover-front img{display:block;width:100%;height:100%;object-fit:cover}.cover-sheen{position:absolute;inset:0;background:linear-gradient(90deg,#0e202259,transparent 5%,#ffffff3a 8%,transparent 13%,transparent 76%,#172e3014);box-shadow:inset 0 0 0 2px #15343f66}
.cover-back{background:radial-gradient(ellipse at 30% 30%,#2d5660,#142e35 80%);transform:rotateY(180deg);box-shadow:inset 0 0 0 12px #ffffff03,inset 0 0 0 13px #b5a47835;display:grid;place-items:center}
.endpaper-mark{font:50px Georgia,serif;color:#c7b48255;border:1px solid #b8a47744;border-radius:50%;width:90px;height:90px;display:grid;place-items:center}.cover-corner{position:absolute;right:0;width:20px;height:20px;border-right:2px solid #a59068}.c-top{top:0;border-top:2px solid #a59068}.c-bottom{bottom:0;border-bottom:2px solid #a59068}
.volume-leaf{inset:4px 2px 4px 4px;transform-origin:left center;transition:transform 1.3s cubic-bezier(.2,.65,.2,1);border-radius:0 3px 3px 0}
.leaf-0{transform:translateZ(4px);transition-delay:.5s}.leaf-1{transform:translateZ(3px);transition-delay:.8s}.leaf-2{transform:translateZ(2px);transition-delay:1.05s}
.leaf-front,.leaf-back{position:absolute;inset:0;display:block;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:#ece8dc;overflow:hidden;border:1px solid #c7c0b0;border-radius:0 3px 3px 0;box-shadow:inset 12px 0 18px -15px #0009}
.leaf-back{transform:rotateY(180deg);background:linear-gradient(90deg,#e4dfd2,#f7f6f1 18%,#f7f6f1 88%,#b9af9b);color:#275c67;padding:14% 12%;text-align:center}
.leaf-lines{display:block;position:absolute;left:15%;right:15%;top:45%;height:30%;opacity:.25;background:repeating-linear-gradient(0deg,#58676a 0 1px,transparent 1px 8px);mask-image:linear-gradient(90deg,#000 85%,transparent)}
.leaf-roman{display:block;font:clamp(24px,4vw,43px) Georgia,serif;letter-spacing:.08em}.leaf-note{display:block;margin-top:14%;font-size:clamp(6px,1vw,9px);line-height:1.5;letter-spacing:.08em}.leaf-imprint{position:absolute;bottom:7%;left:10%;right:10%;font-size:5px;letter-spacing:.14em}
.open .volume-cover{transform:translateZ(6px) rotateY(-163deg)}.open .leaf-0{transform:translateZ(4px) rotateY(-156deg)}.open .leaf-1{transform:translateZ(3px) rotateY(-152deg)}.open .leaf-2{transform:translateZ(2px) rotateY(-148deg)}
.volume-ground{position:absolute;top:83%;left:28%;width:45%;height:26px;border-radius:50%;background:#000b;filter:blur(12px);transform:rotate(-6deg);transition:width 2s,left 2s}
.is-open .volume-ground{left:14%;width:70%}.volume-halo{position:absolute;inset:8% 3%;background:radial-gradient(ellipse,#c6ac6420,transparent 65%);opacity:.6;pointer-events:none;transition:opacity 2s}.is-open .volume-halo{opacity:1}.volume-caption{position:absolute;bottom:1px;color:#c4b590;font-size:9px;letter-spacing:.14em;text-transform:uppercase}.volume-caption>span{margin:0 8px}
.book-open-action{margin:16px auto 0;justify-content:center}.book-open-action:disabled{opacity:.65}.book-downloads{margin-top:26px;animation:archiveReveal .65s both}.archive-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.archive-heading h3{font-size:clamp(27px,4vw,37px);line-height:1.15;margin:0 0 10px}.archive-heading .small-label{margin:0 0 12px}.archive-author{font-size:12px;color:#c1b69c}.archive-badge{font-size:10px;letter-spacing:.12em;border:1px solid #ae987544;padding:6px 9px;white-space:nowrap}.book-downloads .edition-context{max-width:100%;margin:22px 0 0;line-height:1.9;color:#c1c6bb}.book-downloads .edition-row{gap:18px;align-items:center;padding:22px 0}.edition-description{flex:1}.edition-description p{font-size:12px;color:#c4c8bd;line-height:1.55;margin:7px 0 5px}.edition-description small{font-variant-numeric:tabular-nums;letter-spacing:.04em}.edition-actions{display:flex;flex-direction:column;align-items:center;gap:9px;flex-shrink:0}.edition-download{display:flex;align-items:center;justify-content:space-between;gap:22px;border:1px solid #bca575;padding:12px 17px;background:#baaa7510;color:#e8ddc0;font-size:12px;text-decoration:none;min-height:46px;transition:background .2s,color .2s}.edition-download:hover{background:#c2ad7c;color:#101915}.edition-download span{font-size:19px}.edition-read{font-size:10px;text-decoration:none;border-bottom:1px solid #6d7568;color:#b9c3b2}.translation-note{font-size:11px!important;line-height:1.8;color:#aaaFA1!important;border-left:2px solid #9f8c5b;padding:9px 0 9px 16px}
@keyframes archiveReveal{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:540px){.volume-stage{--bw:min(195px,38vw);margin-top:10px}.volume-caption{font-size:7px;letter-spacing:.09em}.book-downloads .edition-row{display:grid;grid-template-columns:27px minmax(0,1fr);gap:9px 12px}.edition-actions{grid-column:2;flex-direction:row;align-items:center;justify-content:space-between;margin-top:9px}.edition-download{padding:10px 15px;font-size:11px;gap:18px}.edition-description p{font-size:11px}.edition-read{font-size:11px}.archive-heading{gap:9px}.archive-badge{font-size:8px}.volume-stage .leaf-note{font-size:6px}.volume-stage .endpaper-mark{width:65px;height:65px;font-size:32px}}
@media(prefers-reduced-motion:reduce){.archive-volume,.volume-cover,.volume-leaf,.volume-ground,.volume-halo{transition:none!important}.book-downloads{animation:none}.volume-trigger:not(:disabled):hover .archive-volume{transform:rotateX(8deg) rotateY(-20deg)}}