/* ─────────────────────────────────────────────
   El traductor literario · Miquel Gómez Besòs
   Lectura horizontal, a doble página
   ───────────────────────────────────────────── */

:root{
  /* Tinta y luz */
  --noche:      #0e0906;
  --noche-alta: #191009;
  --luz:        #f3ece1;
  --luz-media:  #cfc0ac;
  --luz-suave:  #a4917b;
  --ambar:      #d3a06a;
  --ambar-hondo:#8a5a30;
  --frio:       #93a3ac;   /* la voz de la máquina */

  /* Tipografías */
  --display: "Playfair Display", "Iowan Old Style", Georgia, serif;
  --texto:   "EB Garamond", Georgia, "Times New Roman", serif;

  /* Medidas */
  --margen:    clamp(1.25rem, 4vw, 4.5rem);
  --marco-alto: 3.25rem;
  --marco-bajo: 3.75rem;
  --columna:   min(34rem, 46vw);
  --salto:     2.5rem;      /* separación entre páginas del mismo capítulo */
}

*, *::before, *::after{ box-sizing: border-box; }

html, body{
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
}

body{
  background: var(--noche);
  color: var(--luz);
  font-family: var(--texto);
  font-size: clamp(1rem, .38vw + .93rem, 1.14rem);
  line-height: 1.66;
  font-feature-settings: "liga" 1, "onum" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img{ max-width: 100%; height: auto; display: block; }
[hidden]{ display: none !important; }
a{ color: inherit; }
::selection{ background: rgba(211,160,106,.28); }
:focus-visible{ outline: 2px solid var(--ambar); outline-offset: 4px; }

/* ───────── Marcos superior e inferior ───────── */

.marco{
  position: fixed;
  left: 0; right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  padding: 0 var(--margen);
  pointer-events: none;
}
.marco > *{ pointer-events: auto; }

.marco--alto{
  top: 0;
  height: var(--marco-alto);
  justify-content: space-between;
  background: linear-gradient(to bottom, rgba(8,5,3,.72), rgba(8,5,3,0));
}
.marco--bajo{
  bottom: 0;
  height: var(--marco-bajo);
  justify-content: center;
  gap: 1.5rem;
  background: linear-gradient(to top, rgba(8,5,3,.75), rgba(8,5,3,0));
}

.marco__obra{
  font-size: .64rem;
  text-transform: uppercase;
  letter-spacing: .3em;
  color: var(--luz-suave);
}

.marco__rotulo{
  font-family: var(--display);
  font-style: italic;
  font-size: .95rem;
  color: var(--luz-media);
  background: none;
  border: 0;
  padding: .4rem 0 .4rem .75rem;
  cursor: pointer;
  max-width: 60vw;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  transition: color .3s ease;
}
.marco__rotulo:hover{ color: var(--ambar); }
.marco__rotulo::after{
  content: "";
  display: inline-block;
  width: .85rem; height: .55rem;
  margin-left: .6rem;
  vertical-align: middle;
  background: currentColor;
  clip-path: polygon(0 0,100% 0,100% 12%,0 12%,0 44%,100% 44%,100% 56%,0 56%,0 88%,100% 88%,100% 100%,0 100%);
  opacity: .6;
}

/* Cinta de lectura */
.cinta{
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: rgba(243,236,225,.1);
}
.cinta__hilo{
  height: 100%;
  width: 0;
  background: var(--ambar);
  transition: width .6s cubic-bezier(.22,.75,.25,1);
}

.folio{
  margin: 0;
  font-family: var(--display);
  font-size: .82rem;
  letter-spacing: .06em;
  color: var(--luz-media);
  font-variant-numeric: oldstyle-nums;
}

.pista{
  position: absolute;
  right: var(--margen);
  margin: 0;
  font-size: .6rem;
  text-transform: uppercase;
  letter-spacing: .22em;
  color: var(--luz-suave);
  opacity: .55;
}

/* ───────── Botones de paso ───────── */

.paso{
  position: fixed;
  top: 50%;
  z-index: 25;
  transform: translateY(-50%);
  width: 3.2rem;
  height: 5.5rem;
  display: grid;
  place-items: center;
  background: none;
  border: 0;
  color: var(--luz);
  font-family: var(--display);
  font-size: 2.6rem;
  line-height: 1;
  cursor: pointer;
  opacity: .32;
  transition: opacity .3s ease, transform .3s ease;
}
.paso:hover{ opacity: .85; }
.paso--atras{ left: max(.25rem, calc(var(--margen) - 3.4rem)); }
.paso--adelante{ right: max(.25rem, calc(var(--margen) - 3.4rem)); }
.paso--atras:hover{ transform: translate(-3px, -50%); }
.paso--adelante:hover{ transform: translate(3px, -50%); }
.paso[disabled]{ opacity: .08; cursor: default; transform: translateY(-50%); }

/* ───────── El libro ───────── */

.escenario{
  position: fixed;
  inset: 0;
  overflow: hidden;
  perspective: 2600px;
  perspective-origin: 50% 50%;
}

.libro{
  position: relative;
  height: 100%;
  transform-style: preserve-3d;
}

/* Cada capítol és un full del llibre, apilat sobre l'anterior.
   El full no retalla res: qui retalla és la cara, perquè `overflow:hidden`
   aplanaria el 3D i el revers no es podria veure. */
.hoja{
  position: absolute;
  inset: 0;
  visibility: hidden;
  transform-style: preserve-3d;
}
.hoja--presente{ visibility: visible; }

.hoja__cara{
  position: absolute;
  inset: 0;
  overflow: hidden;
  backface-visibility: hidden;
}
/* La cara de davant és el full que es gira en passar pàgina: se'n va sencera,
   amb la fotografia i tot, i a sota ja hi ha la pàgina següent. */
.hoja__cara--frente{
  z-index: 2;
  transform-origin: left center;
}
.hoja--girando .hoja__cara--frente,
.hoja__cara--girando{ box-shadow: 0 0 90px rgba(0,0,0,.8); }

/* El full que gira: frontissa al cantell esquerre, com el llom d'un llibre */
.hoja--girando{
  z-index: 30;
  transform-origin: left center;
}
.hoja--girando .hoja__reverso{ box-shadow: 0 0 90px rgba(0,0,0,.8); }


/* El revers del full */
.hoja__reverso{
  position: absolute;
  inset: 0;
  z-index: 5;
  transform: rotateY(180deg);
  backface-visibility: hidden;
  background:
    linear-gradient(to left, rgba(24,15,9,.92), rgba(12,8,5,.98)),
    radial-gradient(120% 90% at 80% 40%, rgba(211,160,106,.14), transparent 60%);
}

/* L'ombra: el full que gira s'enfosqueix en apartar-se de la llum, i la
   pàgina de sota rep l'ombra del full que li passa per damunt */
.hoja__sombra{
  position: absolute;
  inset: 0;
  z-index: 6;
  pointer-events: none;
  opacity: 0;
  background: linear-gradient(to right, rgba(0,0,0,.88), rgba(0,0,0,.3) 55%, rgba(0,0,0,.06));
}

/* Fondo de cada capítulo */
.hoja__lienzo{
  position: absolute;
  inset: -2% -4%;
  background-size: cover;
  background-position: center;
  will-change: transform;
  transition: transform 1.1s cubic-bezier(.22,.75,.25,1);
}

/* Fondos provisionales, en los tonos de las imágenes definitivas */
[data-fondo="portada"]     .hoja__lienzo{ background-image: radial-gradient(120% 90% at 30% 35%, #6d3a1f 0%, #2c170e 55%, #0c0705 100%); }
[data-fondo="capitulo-1"]  .hoja__lienzo{ background-image: radial-gradient(120% 80% at 62% 28%, #a44a20 0%, #5b2512 45%, #180b06 100%); }
[data-fondo="capitulo-2"]  .hoja__lienzo{ background-image: radial-gradient(100% 85% at 38% 55%, #6b4620 0%, #34200f 50%, #100a05 100%); }
[data-fondo="capitulo-3"]  .hoja__lienzo{ background-image: radial-gradient(130% 85% at 70% 30%, #b45526 0%, #5e2a13 48%, #150a05 100%); }
[data-fondo="capitulo-4"]  .hoja__lienzo{ background-image: radial-gradient(95% 80% at 45% 60%, #7a5526 0%, #2e1d0c 52%, #0d0704 100%); }
[data-fondo="capitulo-5"]  .hoja__lienzo{ background-image: radial-gradient(110% 90% at 50% 40%, #43301c 0%, #1d1209 55%, #0a0604 100%); }
[data-fondo="capitulo-6"]  .hoja__lienzo{ background-image: radial-gradient(120% 85% at 35% 65%, #4a3d2a 0%, #1b1810 50%, #080807 100%); }

/* Velos que hacen legible el texto sobre la imagen */
.hoja__velo{
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to left, rgba(8,5,3,.9) 0%, rgba(8,5,3,.74) 26%, rgba(8,5,3,.3) 55%, rgba(8,5,3,0) 78%),
    linear-gradient(to bottom, rgba(8,5,3,.42), rgba(8,5,3,.22) 30%, rgba(8,5,3,.5));
}
.hoja--izquierda .hoja__velo{
  background:
    linear-gradient(to right, rgba(8,5,3,.9) 0%, rgba(8,5,3,.74) 26%, rgba(8,5,3,.3) 55%, rgba(8,5,3,0) 78%),
    linear-gradient(to bottom, rgba(8,5,3,.42), rgba(8,5,3,.22) 30%, rgba(8,5,3,.5));
}
.hoja--difuminada .hoja__lienzo{
  inset: -12%;
  filter: blur(28px) brightness(.42) saturate(.9);
}

.hoja__velo--pleno{ background: rgba(8,5,3,.72); }
.hoja__velo--centro{
  background:
    radial-gradient(80% 70% at 50% 50%, rgba(8,5,3,.25), rgba(8,5,3,.78)),
    linear-gradient(to bottom, rgba(8,5,3,.4), rgba(8,5,3,.4));
}

/* Gra */
.hoja__cara::after{
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .35;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23g)' opacity='.06'/%3E%3C/svg%3E");
}

/* ───────── El panel de texto ───────── */

.hoja__panel{
  position: absolute;
  top: calc(var(--marco-alto) + 1.25rem);
  bottom: calc(var(--marco-bajo) + .75rem);
  right: var(--margen);
  width: var(--columna);
  z-index: 2;
  text-align: left;
}
.hoja--izquierda .hoja__panel{
  right: auto;
  left: var(--margen);
}
.hoja--amplia .hoja__panel{
  left: var(--margen);
  right: var(--margen);
  width: auto;
  text-align: center;
}
.hoja__panel--centro{
  left: var(--margen);
  right: var(--margen);
  width: auto;
  display: grid;
  place-items: center;
  text-align: center;
}
.hoja__panel--doble{
  left: var(--margen);
  right: var(--margen);
  width: auto;
  text-align: left;
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 5.5rem);
  max-width: 72rem;
  margin: 0 auto;
}

/* Finestra de pàgines: el text es reparteix en columnes de l'ample del panell */
.hojas{
  height: 100%;
  overflow: hidden;
}
.flujo{
  height: 100%;
  column-fill: auto;
  will-change: transform;
  transition: transform .55s cubic-bezier(.22,.75,.25,1);
}

/* ───────── Portadilla de capítulo ───────── */

.portadilla{ margin: 0 0 1.6em; break-inside: avoid; break-after: avoid; }
.portadilla--centro{ text-align: center; }

.portadilla__numero{
  margin: 0 0 .35rem;
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(1rem, 1.6vw, 1.35rem);
  color: var(--luz-media);
}
.portadilla__titulo{
  margin: 0;
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.2rem, 4.6vw, 3.6rem);
  line-height: 1.04;
  letter-spacing: -.012em;
  color: #fff;
  text-wrap: balance;
  text-shadow: 0 2px 24px rgba(0,0,0,.55);
}
.portadilla__subtitulo{
  margin: .6rem 0 0;
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: var(--ambar);
}

/* ───────── Párrafos ───────── */

.flujo p{ margin: 0 0 1.05em; }

.flujo > p:first-of-type::first-letter,
.capitular::first-letter{
  float: left;
  font-family: var(--display);
  font-size: 3.6em;
  line-height: .78;
  padding: .05em .12em 0 0;
  color: #fff;
}

.maquina{ color: var(--frio); letter-spacing: .012em; }

.aparte{
  font-family: var(--display);
  font-style: italic;
  font-size: 1.14em;
  color: var(--luz-media);
}

.retrato{
  break-inside: avoid;
  margin: 1.4rem auto 1.6rem 0;
  width: min(11rem, 55%);
}
.retrato img{
  width: 100%;
  border-radius: 1px;
  filter: saturate(.8) brightness(.95);
  box-shadow: 0 18px 40px -20px rgba(0,0,0,.9);
}
.retrato figcaption{
  margin-top: .5rem;
  font-size: .64rem;
  text-transform: uppercase;
  letter-spacing: .18em;
  color: var(--luz-suave);
}

/* ───────── Frontispicio ───────── */

.portada{ margin: 0; }

.portada__marco{
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  box-shadow: 0 40px 80px -30px rgba(0,0,0,.95), 0 0 0 1px rgba(243,236,225,.08);
  /* que la cubierta no sea nunca más alta que la pantalla */
  width: min(100%, calc((100svh - 11rem) / 1.5));
  margin-inline: auto;
}
@supports (container-type: inline-size){
  .portada__marco{ container-type: inline-size; }
}

.portada__imagen{ width: 100%; }

.portada__rotulo{
  font-size: clamp(.72rem, 1.5vw, 1.05rem);
  position: absolute;
  left: 6%; right: 6%;
  top: 7%;
  text-align: center;
  color: #fdf6ea;
  text-shadow: 0 .12em .5em rgba(20,8,4,.75);
}
.portada--acabada .portada__rotulo{ display: none; }
@supports (font-size: 1cqw){
  .portada__rotulo{ font-size: 4.1cqw; }
}

.portada__titulo{
  margin: 0;
  font-family: var(--display);
  font-weight: 500;
  font-size: 3.05em;
  line-height: .98;
  letter-spacing: -.01em;
}
.portada__titulo em{ font-style: italic; font-weight: 400; }

.portada__filete{
  display: block;
  width: 38%;
  height: 1px;
  margin: .95em auto .8em;
  background: rgba(253,246,234,.6);
}

.portada__lema{
  margin: 0;
  font-family: var(--display);
  font-style: italic;
  font-size: 1.02em;
  color: #f6e9d6;
}

.entrada__titular{
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(2.2rem, 5.2vw, 4rem);
  line-height: 1.03;
  letter-spacing: -.015em;
  margin: 0 0 1.6rem;
  color: #fff;
  text-wrap: balance;
}
.entrada p{ margin: 0 0 1.05rem; max-width: 32rem; }
.susurro{ font-style: italic; color: var(--luz-suave); }

.umbral{
  display: inline-block;
  margin-top: 1.4rem;
  font-family: var(--texto);
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .26em;
  color: var(--ambar);
  background: none;
  border: 0;
  border-bottom: 1px solid rgba(211,160,106,.4);
  padding: 0 0 .45rem;
  cursor: pointer;
  transition: border-color .3s ease, letter-spacing .3s ease;
}
.umbral:hover{ border-bottom-color: var(--ambar); letter-spacing: .32em; }

/* ───────── Eslogan ───────── */

.eslogan{
  margin: 0;
  max-width: 26ch;
  font-family: var(--display);
  font-size: clamp(1.7rem, 4.4vw, 3.2rem);
  line-height: 1.28;
  color: var(--luz);
  text-shadow: 0 2px 30px rgba(0,0,0,.6);
}
.eslogan em{ color: var(--ambar); }

/* ───────── Estantería (capítulo 5) ───────── */

.estanteria{ text-align: center; }

.libro-ficha{
  display: inline-block;
  vertical-align: top;
  break-inside: avoid;
  width: min(12rem, 44%);
  margin: 0 1.1rem 2.2rem;
  text-align: center;
}

.libro-ficha__portada{
  position: relative;
  aspect-ratio: 2 / 3;
  margin-bottom: .9rem;
  background: #1a120b;
  box-shadow: 0 26px 45px -22px rgba(0,0,0,.95), 0 0 0 1px rgba(243,236,225,.07);
  transition: transform .45s cubic-bezier(.22,.75,.25,1);
}
.libro-ficha:hover .libro-ficha__portada{ transform: translateY(-6px); }
.libro-ficha__portada img{
  position: relative;
  z-index: 1;
  width: 100%; height: 100%;
  object-fit: cover;
}

.libro-ficha__suplente{
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .8rem;
  padding: 1.2rem .9rem;
  background: #2b1d12;
  color: var(--luz);
}
.libro-ficha__portada[data-tono="rh"] .libro-ficha__suplente{ background: #2c3352; }
.libro-ficha__portada[data-tono="nc"] .libro-ficha__suplente{ background: #3d1a17; }
.libro-ficha__suplente::before{
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 5px;
  background: rgba(0,0,0,.35);
}
.libro-ficha__suplente em{
  font-family: var(--display);
  font-size: 1rem;
  line-height: 1.25;
}
.libro-ficha__suplente span{
  font-size: .58rem;
  text-transform: uppercase;
  letter-spacing: .18em;
  opacity: .75;
}

.libro-ficha__titulo{
  margin: 0;
  font-family: var(--display);
  font-size: .98rem;
  line-height: 1.28;
}
.libro-ficha__autor{
  margin: .25rem 0 0;
  font-style: italic;
  font-size: .88rem;
  color: var(--luz-media);
}
.libro-ficha__sello{
  margin: .35rem 0 0;
  font-size: .56rem;
  text-transform: uppercase;
  letter-spacing: .18em;
  color: var(--luz-suave);
}
.libro-ficha__autor:empty, .libro-ficha__sello:empty{ display: none; }

/* ───────── Botella (contacto) ───────── */

.botella{ margin-top: 1.6rem; }
.botella a{
  font-family: var(--display);
  font-size: clamp(1.15rem, 2.6vw, 1.7rem);
  color: var(--ambar);
  text-decoration: none;
  border-bottom: 1px solid rgba(211,160,106,.35);
  padding-bottom: .25rem;
  word-break: break-word;
  transition: border-color .3s ease;
}
.botella a:hover{ border-bottom-color: var(--ambar); }

/* ───────── Colofón ───────── */

.ornamento{
  width: 4.5rem;
  height: 1rem;
  margin: 0 auto 1.8rem;
  background: no-repeat center/contain
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 72 12'%3E%3Cg fill='none' stroke='%23d3a06a' stroke-width='1'%3E%3Cpath d='M0 6h26M46 6h26'/%3E%3Cpath d='M36 1.5 40.5 6 36 10.5 31.5 6z'/%3E%3C/g%3E%3C/svg%3E");
  opacity: .8;
}
.colofon__nombre{ margin: 0; font-family: var(--display); font-size: 1.5rem; }
.colofon__oficio{
  margin: .5rem 0 0;
  font-size: .64rem;
  text-transform: uppercase;
  letter-spacing: .28em;
  color: var(--luz-suave);
}
.colofon__nota{
  margin: 2rem auto 0;
  max-width: 26rem;
  font-style: italic;
  font-size: .92rem;
  color: var(--luz-media);
}

/* ───────── Índice ───────── */

.indice-velo{
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(6,4,3,.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: grid;
  place-items: center;
  padding: var(--margen);
  animation: aparecer .3s ease both;
}
.indice-velo[hidden]{ display: none; }

.indice{
  width: min(32rem, 100%);
  max-height: 82vh;
  overflow-y: auto;
  background: var(--noche-alta);
  border: 1px solid rgba(211,160,106,.22);
  box-shadow: 0 40px 90px -30px rgba(0,0,0,.9);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  animation: subir .38s cubic-bezier(.2,.7,.3,1) both;
}
.indice__titulo{
  margin: 0 0 1.5rem;
  font-family: var(--display);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: .3em;
  text-align: center;
  color: var(--luz-media);
}
.indice__lista{ list-style: none; margin: 0; padding: 0; }
.indice__lista a{
  display: flex;
  align-items: baseline;
  gap: .6rem;
  text-decoration: none;
  padding: .5rem 0;
  transition: color .25s ease;
}
.indice__lista a:hover, .indice__lista a:focus-visible{ color: var(--ambar); }
.indice__romano{
  font-family: var(--display);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--ambar);
  min-width: 2rem;
}
.indice__nombre{ font-family: var(--display); }
.indice__puntos{
  flex: 1;
  border-bottom: 1px dotted rgba(243,236,225,.18);
  transform: translateY(-.28em);
}
.indice__cerrar{
  display: block;
  margin: 1.75rem auto 0;
  background: none;
  border: 0;
  border-bottom: 1px solid rgba(243,236,225,.2);
  font-family: var(--texto);
  font-size: .64rem;
  text-transform: uppercase;
  letter-spacing: .22em;
  color: var(--luz-suave);
  padding: .3rem .2rem;
  cursor: pointer;
}
.indice__cerrar:hover{ color: var(--ambar); }

/* ───────── Animaciones ───────── */

@keyframes aparecer{ from{ opacity: 0 } to{ opacity: 1 } }
@keyframes subir{ from{ opacity: 0; transform: translateY(12px) } to{ opacity: 1; transform: none } }

/* ───────── Pantallas estrechas ───────── */

@media (max-width: 900px){
  :root{ --columna: min(34rem, 62vw); }
}

@media (max-width: 700px){
  :root{
    --columna: auto;
    --marco-bajo: 4.25rem;
  }
  .hoja__panel,
  .hoja--izquierda .hoja__panel{
    left: var(--margen);
    right: var(--margen);
    width: auto;
  }
  .hoja__velo,
  .hoja--izquierda .hoja__velo{
    background:
      linear-gradient(to bottom, rgba(8,5,3,.55), rgba(8,5,3,.72)),
      linear-gradient(to bottom, rgba(8,5,3,.2), rgba(8,5,3,.2));
  }
  .hoja__panel--doble{
    grid-template-columns: 1fr;
    align-content: center;
    gap: 1.75rem;
    text-align: left;
  }
  .portada{ width: min(15rem, 58%); margin-inline: auto; }
  /* En el móvil las flechas bajan a la barra inferior, para no pisar el texto */
  .paso{
    top: auto;
    bottom: .35rem;
    transform: none;
    width: 3rem;
    height: 3rem;
    font-size: 1.9rem;
    opacity: .55;
  }
  .paso--atras{ left: .35rem; }
  .paso--adelante{ right: .35rem; }
  .paso--atras:hover, .paso--adelante:hover{ transform: none; }
  .paso[disabled]{ transform: none; }
  .pista{ display: none; }
  .libro-ficha{ width: 44%; margin: 0 .5rem 1.6rem; }
}

@media (max-height: 560px){
  .portadilla__titulo{ font-size: clamp(1.8rem, 4vw, 2.6rem); }
  .hoja__panel{ top: calc(var(--marco-alto) + .5rem); }
}

@media (prefers-reduced-motion: reduce){
  .libro, .flujo, .hoja__lienzo{ transition: none !important; }
  *, *::before, *::after{ animation-duration: .01ms !important; }
}