/* ===== Fuentes locales (OFL) ===== */
@font-face{font-family:Manrope;font-weight:400;font-display:swap;src:url(../fonts/manrope-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:Manrope;font-weight:500;font-display:swap;src:url(../fonts/manrope-latin-500-normal.woff2) format("woff2")}
@font-face{font-family:Manrope;font-weight:600;font-display:swap;src:url(../fonts/manrope-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:Manrope;font-weight:700;font-display:swap;src:url(../fonts/manrope-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:Manrope;font-weight:800;font-display:swap;src:url(../fonts/manrope-latin-800-normal.woff2) format("woff2")}
@font-face{font-family:"Instrument Serif";font-weight:400;font-style:normal;font-display:swap;src:url(../fonts/instrument-serif-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Instrument Serif";font-weight:400;font-style:italic;font-display:swap;src:url(../fonts/instrument-serif-latin-400-italic.woff2) format("woff2")}

:root{
  --ink:#0a1322;--ink-2:#0f1b2f;--ink-3:#16243d;
  --blue:#1e9be0;--blue-btn:#0a74b3;--blue-2:#7cc8f2;--blue-3:#2f6bff;--amber:#ffc77a;--green:#4ade80;
  --paper:#f4f2ec;--paper-2:#e8e4d9;--muted:#5b6475;
  --line:rgba(10,19,34,.12);--line-d:rgba(255,255,255,.14);
  --serif:"Instrument Serif",Georgia,serif;--sans:Manrope,system-ui,-apple-system,"Segoe UI",sans-serif;
  --maxw:1200px;--r:18px;--ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:auto}
body{background:var(--ink);color:#fff;font-family:var(--sans);font-size:17px;line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img,svg,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
em{font-family:var(--serif);font-style:italic;font-weight:400}
h1,h2,h3,h4{font-weight:500;letter-spacing:-.02em;line-height:1.05}
h2{font-family:var(--serif);font-weight:400;font-size:clamp(38px,5.2vw,70px)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-size:12px;letter-spacing:.18em;text-transform:uppercase;font-weight:700;color:var(--blue-2)}
.muted{color:var(--muted)}
.skip{position:absolute;left:-999px;top:8px;z-index:100;background:#fff;color:var(--ink);padding:10px 14px;border-radius:8px}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--blue-2);outline-offset:3px;border-radius:6px}
@media(max-width:600px){.wrap{padding:0 16px}body{font-size:16px}}

/* ===== Botones ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:15px 24px;border-radius:999px;font-weight:700;font-size:15px;line-height:1.2;border:1.5px solid transparent;transition:transform .25s var(--ease),background .25s,color .25s,border-color .25s;white-space:nowrap}
.btn:active{transform:scale(.97)}
.btn-sm{padding:11px 18px;font-size:14px}
.btn-primary{background:var(--blue-btn);color:#fff}
.btn-primary:hover{background:#08639a}
.btn-ghost{border-color:rgba(255,255,255,.35);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--ink)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--ink-3)}
.btn-line{border-color:var(--line);color:var(--ink)}
.btn-line:hover{border-color:var(--ink)}
.ctas{display:flex;flex-wrap:wrap;gap:12px}

/* ===== Nav ===== */
.nav{position:fixed;inset:0 0 auto;z-index:50;transition:background .3s,box-shadow .3s,transform .4s var(--ease)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:76px;gap:20px}
.brand img{height:46px;width:auto}
.nav-links{display:flex;gap:28px;font-size:14px;font-weight:600;color:rgba(255,255,255,.78)}
.nav-links a:hover{color:#fff}
.nav.solid{background:rgba(10,19,34,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line-d)}
@media(max-width:900px){.nav-links{display:none}.brand img{height:38px}}

/* ===== Escena 3D ===== */
.scene{position:relative;height:720vh;background:var(--ink)}
.scene-sticky{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;background:radial-gradient(70% 60% at 70% 30%,#16305a 0%,var(--ink) 70%)}
#city{position:absolute;inset:0;width:100%;height:100%;opacity:0;transition:opacity 1.2s var(--ease)}
#city.ready{opacity:1}
.scene-vignette{position:absolute;inset:0;pointer-events:none;background:
  linear-gradient(90deg,rgba(10,19,34,.78) 0%,rgba(10,19,34,.25) 42%,rgba(10,19,34,0) 60%),
  linear-gradient(0deg,rgba(10,19,34,.85) 0%,rgba(10,19,34,0) 30%)}
.chapters{position:absolute;inset:0;pointer-events:none}
.chapter{position:absolute;left:max(24px,calc((100vw - var(--maxw))/2 + 24px));max-width:520px;opacity:0;visibility:hidden;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease),visibility 0s .6s}
.chapter.on{opacity:1;visibility:visible;transform:none;transition:opacity .6s var(--ease),transform .6s var(--ease),visibility 0s;pointer-events:auto}
.chapter-hero{bottom:12vh;max-width:760px;opacity:1;visibility:visible;transform:none;pointer-events:auto}
.chapter-hero.hide{opacity:0;visibility:hidden;transform:translateY(24px);pointer-events:none}
.chapter-hero>*{animation:rise .8s var(--ease) both}
.chapter-hero>:nth-child(2){animation-delay:.08s}.chapter-hero>:nth-child(3){animation-delay:.16s}.chapter-hero>:nth-child(4){animation-delay:.24s}
@keyframes rise{from{opacity:0;transform:translateY(18px)}}
.chapter-hero h1{font-size:clamp(48px,8vw,118px);font-weight:500;letter-spacing:-.045em;line-height:.95;margin:18px 0 22px}
.chapter-hero h1 em{color:var(--blue-2)}
.chapter-hero .lead{color:rgba(255,255,255,.78);font-size:18px;max-width:540px;margin-bottom:28px}
.panel{top:50%;transform:translateY(calc(-50% + 24px))}
.panel.on{transform:translateY(-50%)}
.panel .n{font-family:var(--serif);font-style:italic;color:var(--blue-2);font-size:22px}
.panel h2{font-size:clamp(36px,4.4vw,60px);margin:8px 0 16px}
.panel p{color:rgba(255,255,255,.76);max-width:440px}
.panel .hint{margin-top:14px;font-size:14px;color:var(--amber)}
.panel .btn{margin-top:22px}

.labels,.hotspots{position:absolute;inset:0;pointer-events:none}
.dim-label{position:absolute;left:0;top:0;font-size:13px;font-weight:800;letter-spacing:.04em;color:var(--blue-2);background:rgba(10,19,34,.75);border:1px solid rgba(124,200,242,.35);padding:5px 10px;border-radius:999px;white-space:nowrap;opacity:0;will-change:transform,opacity}
.dim-area{color:#fff}
.hotspot{position:absolute;left:0;top:0;width:44px;height:44px;margin:-22px 0 0 -22px;border-radius:50%;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .35s,visibility 0s .35s}
.hotspot.on{opacity:1;visibility:visible;pointer-events:auto;transition:opacity .35s}
.hotspot::before{content:"";position:absolute;inset:12px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 4px rgba(255,199,122,.25)}
.hotspot::after{content:"";position:absolute;inset:0;border-radius:50%;border:1.5px solid var(--amber);animation:pulse 2s var(--ease) infinite}
.hotspot span{position:absolute;left:50px;top:50%;transform:translateY(-50%);font-size:13px;font-weight:700;background:rgba(10,19,34,.85);border:1px solid rgba(255,199,122,.4);padding:5px 10px;border-radius:999px;white-space:nowrap}
@keyframes pulse{0%{transform:scale(.6);opacity:1}100%{transform:scale(1.5);opacity:0}}
.hs-panel{position:absolute;right:max(24px,calc((100vw - var(--maxw))/2 + 24px));bottom:12vh;width:min(360px,calc(100vw - 48px));background:rgba(15,27,47,.94);border:1px solid var(--line-d);border-radius:var(--r);padding:24px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);z-index:5}
.hs-panel h3{font-size:24px;margin:8px 0 10px}
.hs-panel p{color:rgba(255,255,255,.78);font-size:15px}
.hs-close{position:absolute;right:10px;top:8px;width:36px;height:36px;font-size:24px;color:rgba(255,255,255,.6)}

.value-card{position:absolute;right:max(24px,calc((100vw - var(--maxw))/2 + 24px));top:50%;width:min(340px,80vw);padding:26px 26px 30px;border-radius:20px;background:rgba(13,26,48,.92);border:1px solid rgba(30,155,224,.6);box-shadow:0 30px 80px -20px rgba(0,0,0,.7);opacity:0;visibility:hidden;transform:translateY(-40%) scale(.94)}
.value-card small{display:block;font-size:11px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:rgba(255,255,255,.6)}
.value-card strong{display:block;font-family:var(--serif);font-weight:400;font-size:clamp(40px,4.4vw,54px);line-height:1.1;margin:10px 0 6px;font-variant-numeric:tabular-nums}
.value-card span{font-size:13px;color:rgba(255,255,255,.65)}
.value-card .demo{display:block;font-size:11px;color:rgba(255,255,255,.4);margin-top:8px}
.stamp{position:absolute;right:-18px;bottom:-22px;padding:9px 16px;border:2px solid var(--green);border-radius:8px;color:var(--green);font-weight:800;font-size:13px;letter-spacing:.14em;text-transform:uppercase;background:rgba(10,19,34,.92);opacity:0;transform:rotate(-8deg) scale(1.8)}

.scene-progress{position:absolute;right:max(16px,calc((100vw - var(--maxw))/2 + 24px));top:96px;display:flex;align-items:center;gap:6px;opacity:0;transition:opacity .4s}
.scene-progress.on{opacity:1}
.sp-dot{font-size:11px;font-weight:800;letter-spacing:.08em;padding:4px 9px;border-radius:999px;border:1px solid var(--line-d);color:rgba(255,255,255,.5);transition:.3s}
.sp-dot.on{background:var(--blue-btn);border-color:var(--blue-btn);color:#fff}
.sp-bar{display:none}
.scroll-cue{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:rgba(255,255,255,.6);transition:opacity .4s}
.scroll-cue i{width:1px;height:44px;background:linear-gradient(var(--blue-2),transparent);animation:cue 2s ease-in-out infinite;transform-origin:top}
@keyframes cue{0%{transform:scaleY(0)}50%{transform:scaleY(1)}100%{transform:scaleY(0);transform-origin:bottom}}

@media(max-width:760px){
  .scene-vignette{background:linear-gradient(0deg,rgba(10,19,34,.95) 0%,rgba(10,19,34,.55) 45%,rgba(10,19,34,0) 70%)}
  .chapter{left:16px;right:16px;max-width:none}
  .chapter-hero{bottom:9vh}
  .panel{top:auto;bottom:8vh;transform:translateY(24px)}
  .panel.on{transform:none}
  .panel h2{font-size:34px}
  .panel p{font-size:15px}
  .value-card{right:16px;left:16px;width:auto;top:16vh;transform:scale(.94)}
  .hs-panel{left:16px;right:16px;width:auto;bottom:auto;top:96px}
  .scene-progress{display:none}
  .dim-label{font-size:11px;padding:4px 8px}
  .hotspot span{left:44px;font-size:11px;padding:4px 8px}
  .scroll-cue{display:none}
}

/* Sin WebGL o con movimiento reducido: capítulos apilados */
.static-scene .scene{height:auto}
.static-scene .scene-sticky{position:relative;height:auto;min-height:100svh;padding:120px 0 80px;background:radial-gradient(80% 60% at 75% 20%,rgba(30,155,224,.25),transparent 70%),var(--ink)}
.static-scene #city,.static-scene .labels,.static-scene .hotspots,.static-scene .value-card,.static-scene .scene-progress,.static-scene .scroll-cue{display:none}
.static-scene .chapters{position:relative;inset:auto;display:grid;gap:64px;max-width:var(--maxw);margin:0 auto;padding:0 24px;pointer-events:auto}
.static-scene .chapter{position:static;opacity:1;visibility:visible;transform:none;max-width:640px}

/* ===== Secciones claras ===== */
.sec{background:var(--paper);color:var(--ink);padding:130px 0}
.sec-alt{background:var(--paper-2)}
.sec .eyebrow{color:var(--blue-btn)}
.head{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:end;margin-bottom:60px}
.head p{color:var(--muted);max-width:460px}
@media(max-width:800px){.sec{padding:84px 0}.head{grid-template-columns:1fr;gap:16px;margin-bottom:40px}}

.creds{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cred{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px 28px;position:relative;overflow:hidden}
.cred small{display:block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:700}
.cred strong{display:block;font-size:28px;font-weight:700;letter-spacing:-.02em;margin-top:40px}
.cred span{color:var(--muted);font-size:14px}
.cred::after{content:"";position:absolute;right:-30px;top:-30px;width:110px;height:110px;border-radius:50%;border:1px solid var(--line)}
.regs{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}
.reg{display:flex;flex-direction:column;gap:6px;padding:22px 26px;border-radius:var(--r);background:var(--ink);color:#fff}
.reg span{color:rgba(255,255,255,.7);font-size:14px}
.reg code{font-family:var(--sans);font-weight:800;font-size:22px;letter-spacing:.04em;color:var(--blue-2)}
@media(max-width:800px){.creds,.regs{grid-template-columns:1fr}}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:30px;position:relative;overflow:hidden;transition:transform .25s var(--ease),box-shadow .3s}
.card::before{content:"";position:absolute;inset:0;background:radial-gradient(320px circle at var(--mx,50%) var(--my,0%),rgba(30,155,224,.14),transparent 60%);opacity:0;transition:opacity .3s}
.card:hover{box-shadow:0 30px 60px -30px rgba(10,19,34,.35)}
.card:hover::before{opacity:1}
.card .ic{width:48px;height:48px;padding:12px;border-radius:12px;background:var(--ink);stroke:#fff;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;margin-bottom:36px}
.card h3{font-size:23px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.card-feature{background:var(--ink);color:#fff}
.card-feature p{color:rgba(255,255,255,.72)}
.card-feature .ic{background:var(--blue)}
@media(max-width:900px){.cards{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.cards{grid-template-columns:1fr}}

.about{display:grid;grid-template-columns:1fr 1.1fr;gap:60px}
.about-text p{color:var(--muted);margin-bottom:16px;font-size:18px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px;padding-top:28px;border-top:1px solid var(--line)}
.stats strong{display:block;font-family:var(--serif);font-weight:400;font-size:clamp(40px,4.6vw,60px);line-height:1;font-variant-numeric:tabular-nums}
.stats span{font-size:14px;color:var(--muted)}
@media(max-width:800px){.about{grid-template-columns:1fr;gap:24px}}

/* ===== Libro ===== */
.book-scene{position:relative;height:460vh;background:radial-gradient(70% 55% at 50% 55%,#13254a 0%,var(--ink) 70%)}
.book-sticky{position:sticky;top:0;height:100vh;height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;overflow:hidden;padding:100px 16px 32px}
.book-head{text-align:center}
.book-head h2{font-size:clamp(34px,4.4vw,58px);margin-top:10px}
.book-stage{perspective:2200px;display:flex;justify-content:center;width:100%}
.book{--bw:min(980px,90vw,calc((100svh - 260px) * 1.44));--fs:1.5cqi;position:relative;width:var(--bw);aspect-ratio:1.44;container-type:inline-size;transform-style:preserve-3d;transition:transform .8s var(--ease)}
.book.single{--bw:min(420px,86vw,calc((100svh - 260px) * .72));--fs:3.7cqi;aspect-ratio:.72}
.book::before{content:"";position:absolute;left:50%;right:-6px;top:6px;bottom:-8px;border-radius:4px 10px 10px 4px;background:repeating-linear-gradient(90deg,#e9e4d6 0 2px,#d6cfbd 2px 3px);transform:translateZ(-2px);box-shadow:0 40px 70px -20px rgba(0,0,0,.7)}
.book.single::before{left:0}
.book.opened::after{content:"";position:absolute;left:-6px;right:50%;top:6px;bottom:-8px;border-radius:10px 4px 4px 10px;background:repeating-linear-gradient(90deg,#d6cfbd 0 1px,#e9e4d6 1px 3px);transform:translateZ(-2px)}
.leaf{position:absolute;top:0;left:50%;width:50%;height:100%;transform-origin:0 50%;transform-style:preserve-3d;will-change:transform}
.book.single .leaf{left:0;width:100%}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;overflow:hidden;background:linear-gradient(90deg,#efeadf 0%,#f7f4ec 8%,#f7f4ec 100%);color:var(--ink);border-radius:0 8px 8px 0;font-size:var(--fs);padding:9% 9% 8%;display:flex;flex-direction:column}
.face.back{transform:rotateY(180deg);border-radius:8px 0 0 8px;background:linear-gradient(270deg,#efeadf 0%,#f7f4ec 8%,#f7f4ec 100%)}
.face::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(0,0,0,.25),rgba(0,0,0,0) 40%);opacity:var(--shade,0)}
.face.off{pointer-events:none}
.pg-blank{background:#f1ede3}
.pk{font-size:.75em;letter-spacing:.18em;text-transform:uppercase;font-weight:800;color:var(--blue-btn)}
.face h4{font-family:var(--serif);font-weight:400;font-size:2.1em;line-height:1.05;margin:.5em 0 .6em;letter-spacing:-.01em}
.face p{font-size:1em;line-height:1.55;color:#33405a;margin-bottom:.8em}
.face ul{list-style:none;display:grid;gap:.7em;margin-top:.4em}
.face li{display:flex;gap:.7em;color:#33405a;line-height:1.45}
.face li::before{content:"";flex:none;width:1.2em;height:1px;background:var(--blue);margin-top:.75em}
.folio{position:absolute;right:9%;bottom:6%;font-family:var(--serif);font-style:italic;color:#8a90a0;font-size:1.1em}
.pg-cover{background:linear-gradient(140deg,#14305e,#0a1322 70%) !important;color:#fff;border:1px solid rgba(124,200,242,.25)}
.pg-cover .k{font-size:.72em;letter-spacing:.22em;color:var(--blue-2);font-weight:800}
.pg-cover h3{font-family:var(--serif);font-weight:400;font-size:3.6em;line-height:.95;margin:.6em 0 .25em}
.pg-cover h3 em{color:var(--blue-2)}
.pg-cover .sub{color:rgba(255,255,255,.75);font-size:1.15em;line-height:1.35}
.pg-cover svg{margin-top:auto;width:100%;height:auto}
.pg-cover .ax{stroke:rgba(255,255,255,.22);fill:none}
.pg-cover .c1{stroke:var(--blue-2);stroke-width:2.5;fill:none}
.pg-cover .c2{stroke:rgba(124,200,242,.4);stroke-width:1.5;fill:none}
.pg-cover .au{font-weight:800;color:#fff;margin:1em 0 0;letter-spacing:.02em}
.pg-back{background:linear-gradient(220deg,#14305e,#0a1322 70%) !important}
.chips{display:flex;flex-wrap:wrap;gap:.5em;margin-bottom:1em}
.chip{font-size:.9em;font-weight:700;padding:.5em .9em;border-radius:999px;border:1px solid rgba(10,19,34,.2);color:var(--ink);transition:background .2s,color .2s,border-color .2s}
.chip:hover,.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.note{font-size:.95em !important;color:#1c5f8a !important;background:rgba(30,155,224,.08);border-left:2px solid var(--blue);padding:.6em .8em;border-radius:0 6px 6px 0;min-height:3.4em}
.gloss-text{font-size:1.15em !important;line-height:1.75 !important}
.term{font-weight:700;color:var(--blue-btn);border-bottom:1.5px dashed var(--blue-btn);padding:0 .1em;line-height:1.3}
.term.on{background:var(--blue-btn);color:#fff;border-radius:4px;border-bottom-color:transparent}
.pg-cta{justify-content:center}
.pg-cta .btn{font-size:max(13px,1em);margin-top:.6em;align-self:flex-start}
.book-progress{width:min(320px,60vw);height:2px;background:var(--line-d);border-radius:2px;overflow:hidden}
.book-progress b{display:block;height:100%;background:var(--blue-2);transform-origin:left;transform:scaleX(0)}
.static-book .book-scene{height:auto}
.static-book .book-sticky{position:relative;height:auto;min-height:100svh}

/* ===== Trabaja con nosotros ===== */
.join{background:var(--blue-btn);color:#fff}
.join-in{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap;padding-top:70px;padding-bottom:70px}
.join h2{font-size:clamp(34px,4.2vw,56px);max-width:16ch}
.join p{color:rgba(255,255,255,.9);margin-top:10px;max-width:520px}

/* ===== Contacto ===== */
.contact{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:start}
.contact h2{margin:12px 0 8px}
.contact .ctas{margin-top:28px}
.info{border-top:1px solid var(--line)}
.info a{display:grid;grid-template-columns:150px 1fr;gap:16px;padding:22px 0;border-bottom:1px solid var(--line);transition:padding .3s var(--ease)}
.info a:hover{padding-left:10px}
.info small{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:700;padding-top:3px}
.info span{font-weight:600}
@media(max-width:800px){.contact{grid-template-columns:1fr;gap:30px}.info a{grid-template-columns:1fr;gap:4px}}

.foot{background:var(--ink);color:rgba(255,255,255,.6);font-size:14px}
.foot-in{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;padding-top:36px;padding-bottom:36px}
.foot img{height:44px;width:auto}

.wa-float{position:fixed;right:18px;bottom:18px;z-index:60;width:56px;height:56px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 12px 30px -8px rgba(0,0,0,.45);transition:transform .25s var(--ease)}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:30px;height:30px;fill:#fff}

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

/* Libro en modo estático (movimiento reducido) */
.book.flat{aspect-ratio:auto;width:min(1100px,92vw);display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;transform:none;--fs:15px;container-type:normal}
.book.flat::before,.book.flat::after{display:none}
.book.flat .face{position:relative;inset:auto;min-height:340px;border-radius:8px;backface-visibility:visible}

.face:not(.pg-cover):not(.pg-blank){justify-content:center}
.face:not(.pg-cover) h4{font-size:2.4em}

/* Página 404 */
.e404{min-height:100svh;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:18px;max-width:720px;margin:0 auto;padding:40px 24px}
.e404 img{height:52px;width:auto;margin-bottom:24px}
.e404 h1{font-family:var(--serif);font-weight:400;font-size:clamp(44px,7vw,80px)}
.e404 h1 em{color:var(--blue-2)}
.e404 p{color:rgba(255,255,255,.72);margin-bottom:10px}

/* Movimiento reducido: estático desde el primer pintado (sin saltos de diseño) */
@media (prefers-reduced-motion:reduce){
  .scene{height:auto}
  .scene-sticky{position:relative;height:auto;min-height:100svh;padding:120px 0 80px}
  #city,.labels,.hotspots,.value-card,.scene-progress,.scroll-cue{display:none}
  .chapters{position:relative;inset:auto;display:grid;gap:64px;max-width:var(--maxw);margin:0 auto;padding:0 24px;pointer-events:auto}
  .chapter{position:static;opacity:1;visibility:visible;transform:none;max-width:640px}
  .book-scene{height:auto}
  .book-sticky{position:relative;height:auto;min-height:100svh}
}