/* V24 · Sencillez y usabilidad: correcciones globales y tienda con identidad propia (papel, tinta y Computer Modern). */

/* ---------- Tipografía LaTeX (Computer Modern), servida desde el propio dominio ---------- */
@font-face{font-family:"CMU Serif";src:url("fonts/cmu/cmu-serif-roman-latin.woff2") format("woff2");font-weight:400 600;font-style:normal;font-display:swap}
@font-face{font-family:"KaTeX_Main";src:url("fonts/katex/KaTeX_Main-Regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"KaTeX_Math";src:url("fonts/katex/KaTeX_Math-Italic.woff2") format("woff2");font-weight:400;font-style:italic;font-display:swap}
.lx{font-family:"KaTeX_Main","Latin Modern Math","Cambria Math","Times New Roman",serif;font-style:normal;font-weight:400;line-height:1.7;letter-spacing:0;overflow-wrap:anywhere}
.lx-v{font-family:"KaTeX_Math","Times New Roman",serif;font-style:italic}
.lx-s{font-size:.7em;line-height:0}
.lx-b{margin:0 .222em}.lx-r{margin:0 .278em}.lx-f{margin:0 .167em}.lx-p{margin-right:.167em}.lx-quad{margin-right:1em}

/* ---------- Correcciones globales detectadas en la revisión ---------- */
/* Reconocimientos (Experto en ciencia): la descripción caía en la columna estrecha del año. */
.l23-awards li{display:block;position:relative;padding:16px 0 16px 106px}
.l23-awards li>span{position:absolute;left:0;top:16px}
@media(max-width:700px){.l23-awards li{padding-left:0}.l23-awards li>span{position:static;display:block;margin-bottom:2px}}
/* Bloque de contacto azul en «Experto en ciencia»: el título heredaba tinta oscura y no se leía. */
.s15 .l23--autor .v22-lcta h2,.s15 .l23--autor .v22-lcta h3{color:#fff}
/* Galerías: la última fila dejaba un hueco vacío. */
@media(min-width:801px){.l23-gallery figure:not(.is-wide):not(.is-tall):nth-last-child(-n+2):nth-child(n+3){grid-column:span 3}}
@media(max-width:800px){.l23-gallery figure.is-tall{grid-column:span 2;grid-row:span 1}}
/* Botón flotante «Escríbeme» en móvil: compacto, en la esquina, sin tapar el contenido; en la tienda manda la cesta. */
.v22-dock{left:auto;right:16px;bottom:16px}
.v22-dock button{width:auto;min-height:46px;padding:0 20px;font-size:13px}
body:has(.t24) .v22-dock{display:none!important}
/* Ritmo vertical común: mismos espacios entre secciones y bajo los títulos. */
.s15 .l23-section{padding-block:clamp(48px,7vw,88px)}
.s15 .l23-h2{margin-bottom:clamp(20px,2.4vw,32px)}

/* ---------- Tienda ---------- */
.t24{--t24-ink:#18223d;--t24-body:#262d3f;--t24-muted:#525763;--t24-paper:#f7f5f0;--t24-band:#efece4;--t24-card:#fffefb;--t24-line:#d6dbd4;--t24-photo:#f2f1ee;color:var(--t24-body)}
.t24 h1,.t24 h2,.t24 h3{font-family:"CMU Serif","Latin Modern Roman",Georgia,serif;font-weight:500;letter-spacing:0;color:var(--t24-ink)}
.t24-kicker{margin:0 0 10px;font:700 12px/1.3 Manrope,system-ui,sans-serif;letter-spacing:.14em;text-transform:uppercase;color:var(--t24-muted)}
.t24-muted{color:var(--t24-muted);font-size:14px;line-height:1.55}
.t24-textlink{color:var(--t24-ink);text-decoration:underline;text-underline-offset:3px}
.t24-textbtn{border:0;background:none;padding:0;font:600 14px Manrope,system-ui,sans-serif;color:var(--t24-ink);text-decoration:underline;text-underline-offset:3px;cursor:pointer}
.t24-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 26px;border:1.5px solid var(--t24-ink);border-radius:999px;background:var(--t24-ink);color:#fff;font:700 15px Manrope,system-ui,sans-serif;text-decoration:none;cursor:pointer;transition:background .2s,color .2s,transform .2s}
.t24-btn:hover{background:#0d1426}.t24-btn:active{transform:translateY(1px)}
.t24-btn:focus-visible,.t24 button:focus-visible,.t24 a:focus-visible,.t24 input:focus-visible,.t24 select:focus-visible{outline:3px solid #6fd3bd;outline-offset:2px}
.t24-btn--line{background:transparent;color:var(--t24-ink)}.t24-btn--line:hover{background:var(--t24-ink);color:#fff}
.t24-btn--small{min-height:40px;padding:0 18px;font-size:14px}
.t24-btn--paypal{background:#0070ba;border-color:#0070ba}.t24-btn--paypal:hover{background:#005ea6}
.t24-wide{width:100%}

.t24-anchor{display:block;position:relative;top:-90px;visibility:hidden}
/* Cabecera de la tienda */
.t24-top{border-bottom:1px solid var(--t24-line)}
.t24-top-inner{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;padding:clamp(40px,6vw,72px) 0 24px}
.t24-title{margin:0 0 12px;font-size:clamp(40px,5.4vw,68px);line-height:1.02}
.t24-lead{max-width:56ch;margin:0;font-size:clamp(16px,1.4vw,19px);line-height:1.55}
.t24-cart-btn{flex:none;display:inline-flex;align-items:center;gap:10px;min-height:46px;padding:0 20px;border:1.5px solid var(--t24-ink);border-radius:999px;background:transparent;color:var(--t24-ink);font:700 15px Manrope,system-ui,sans-serif;cursor:pointer}
.t24-cart-btn.has-items{background:var(--t24-ink);color:#fff}
.t24-count{display:inline-grid;place-items:center;min-width:24px;height:24px;padding:0 6px;border-radius:999px;background:#6fd3bd;color:#0d1426;font-size:13px}
.t24-jump{display:flex;gap:28px;padding:14px 0 18px;overflow-x:auto;scrollbar-width:none}
.t24-jump a{flex:none;color:var(--t24-ink);font:600 14px Manrope,system-ui,sans-serif;text-decoration:none;border-bottom:1.5px solid transparent;padding-bottom:2px}
.t24-jump a:hover{border-color:currentColor}

/* Estudio «Tu figura» */
.t24-studio{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:clamp(28px,5vw,64px);align-items:start;padding:clamp(36px,5vw,64px) 0 clamp(56px,7vw,88px);scroll-margin-top:90px}
.t24-viewer{position:sticky;top:96px}
.t24-frame{position:relative;aspect-ratio:1;border-radius:18px;overflow:hidden;background:var(--t24-photo)}
.t24-frame canvas{display:block;width:100%;height:100%}
.t24-frame canvas[hidden],.t24-stage[hidden]{display:none}
.t24-stage{position:absolute;inset:0;background:radial-gradient(circle at 50% 40%,#fff,#eceae4)}
.t24-stage canvas{cursor:grab;touch-action:none}
.t24-nogl{position:absolute;inset:auto 16px 16px;margin:0;padding:10px 12px;border-radius:10px;background:#fff;font-size:13px}
.t24-tag{position:absolute;right:12px;bottom:12px;padding:4px 10px;border-radius:999px;background:rgba(255,255,255,.85);font:600 11px Manrope,system-ui,sans-serif;color:var(--t24-muted)}
.t24-views{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.t24-views button{min-height:38px;padding:0 16px;border:1px solid var(--t24-line);border-radius:999px;background:var(--t24-card);color:var(--t24-ink);font:600 13px Manrope,system-ui,sans-serif;cursor:pointer}
.t24-views button[aria-pressed="true"]{background:var(--t24-ink);border-color:var(--t24-ink);color:#fff}
.t24-panel h2{margin:0 0 6px;font-size:clamp(30px,3vw,38px)}
.t24-panel>.t24-muted{margin:0 0 24px}
.t24-field{display:block;margin-bottom:16px}
.t24-field span,.t24-choices legend{display:block;margin-bottom:8px;font:700 12px Manrope,system-ui,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--t24-muted)}
.t24-choices legend small{font-weight:600;letter-spacing:0;text-transform:none}
.t24-field input{width:100%;padding:8px 2px 10px;border:0;border-bottom:2px solid var(--t24-ink);background:transparent;font:500 30px/1.2 "CMU Serif",Georgia,serif;color:var(--t24-ink)}
.t24-eq{margin:0 0 24px;padding:14px 16px;border-left:2px solid var(--t24-ink);background:var(--t24-card)}
.t24-eq-family{margin:0 0 4px;font:700 11px Manrope,system-ui,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--t24-muted)}
.t24-eq-math{margin:0 0 8px;font-size:19px;color:var(--t24-ink)}
.t24-choices{margin:0 0 20px;padding:0;border:0}
.t24-choices label{display:inline-block;margin:0 6px 8px 0}
.t24-choices input{position:absolute;opacity:0;width:1px;height:1px}
.t24-choices label span{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 14px;border:1px solid var(--t24-line);border-radius:999px;background:var(--t24-card);font:600 13px Manrope,system-ui,sans-serif;color:var(--t24-ink);cursor:pointer}
.t24-choices input:checked+span{border-color:var(--t24-ink);box-shadow:inset 0 0 0 1px var(--t24-ink)}
.t24-choices input:focus-visible+span{outline:3px solid #6fd3bd;outline-offset:2px}
.t24-colors i{width:18px;height:18px;border-radius:50%;background:linear-gradient(135deg,var(--a),var(--b),var(--c));box-shadow:inset 0 0 0 1px rgba(0,0,0,.12)}
.t24-sizes label span{justify-content:center;min-width:52px;padding:0 10px}
.t24-buy{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:4px;padding-top:20px;border-top:1px solid var(--t24-line)}
.t24-price{display:flex;flex-direction:column;margin:0}
.t24-price strong{font:500 32px/1.1 "CMU Serif",Georgia,serif;color:var(--t24-ink)}
.t24-price span{font-size:13px;color:var(--t24-muted)}
.t24-added{min-height:1.4em;margin:10px 0 0;font-size:14px;color:#233669}
.t24-facts{margin:8px 0 18px;padding:0;list-style:none;font-size:14px;line-height:1.5}
.t24-facts li{position:relative;padding-left:18px;margin:4px 0}.t24-facts li::before{content:"·";position:absolute;left:4px;font-weight:800}
.t24-try{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:0 0 12px;font-size:13px;color:var(--t24-muted)}
.t24-try button{min-height:32px;padding:0 12px;border:1px solid var(--t24-line);border-radius:999px;background:transparent;font:600 13px "CMU Serif",Georgia,serif;color:var(--t24-ink);cursor:pointer}
.t24-share{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin:0}

/* Secciones */
.t24-band{background:var(--t24-band);padding:clamp(56px,7vw,88px) 0}
.t24-section{padding:clamp(56px,7vw,88px) 0}
.t24-head{margin-bottom:clamp(24px,3vw,36px)}
.t24-head h2{margin:0 0 8px;font-size:clamp(30px,3.4vw,42px)}
.t24-head p{max-width:62ch;margin:0;color:var(--t24-muted)}
.t24-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,2.6vw,32px)}
.t24-card figure{position:relative;margin:0 0 14px;aspect-ratio:1;border-radius:14px;overflow:hidden;background:var(--t24-photo)}
.t24-card figure img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:opacity .35s}
.t24-card .t24-card-detail{opacity:0}
.t24-card.show-detail .t24-card-detail{opacity:1}
@media(hover:hover){.t24-card figure:hover .t24-card-detail{opacity:1}}
.t24-zoom{position:absolute;left:10px;bottom:10px;min-height:32px;padding:0 12px;border:0;border-radius:999px;background:rgba(255,255,255,.9);font:600 12px Manrope,system-ui,sans-serif;color:var(--t24-ink);cursor:pointer}
.t24-card h3{margin:0 0 4px;font-size:23px}
.t24-card-eq{margin:0 0 6px;font-size:14px;color:var(--t24-ink)}
.t24-card .t24-muted{margin:0 0 14px}
.t24-card-buy{display:flex;gap:8px;align-items:center}
.t24-card-buy select,.t24-line-ctl select{min-height:40px;padding:0 10px;border:1px solid var(--t24-line);border-radius:10px;background:var(--t24-card);font:600 13px Manrope,system-ui,sans-serif;color:var(--t24-ink)}
.t24-books{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px)}
.t24-book{display:grid;grid-template-columns:110px 1fr;gap:18px;align-items:start}
.t24-book img{width:110px;height:auto;border-radius:3px;box-shadow:0 10px 24px rgba(16,22,37,.18)}
.t24-book h3{margin:0 0 6px;font-size:20px;line-height:1.2}
.t24-book p{margin:0 0 10px;font-size:14px;line-height:1.5}
.t24-links{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.t24-links .t24-btn{min-height:38px;padding:0 16px;font-size:13px}
.t24-grid--cubes{grid-template-columns:repeat(4,minmax(0,1fr))}
.t24-cube{display:flex;flex-direction:column;gap:4px;padding:16px;border-radius:14px;background:var(--t24-card);color:var(--t24-body);text-decoration:none;border:1px solid transparent;transition:border-color .2s,transform .2s}
.t24-cube:hover{border-color:var(--t24-ink);transform:translateY(-2px)}
.t24-cube img{width:100%;height:auto;aspect-ratio:1;margin-bottom:8px}
.t24-cube strong{font:500 19px "CMU Serif",Georgia,serif;color:var(--t24-ink)}
.t24-cube span{font-size:13px;color:var(--t24-muted);line-height:1.45}
.t24-cube em{margin-top:auto;padding-top:10px;font:700 13px Manrope,system-ui,sans-serif;font-style:normal;color:var(--t24-ink)}
.t24-aff{margin:20px 0 0}
.t24-how ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px);margin:0 0 24px;padding:0;list-style:none;counter-reset:t24}
.t24-how li{counter-increment:t24;padding-top:16px;border-top:1px solid var(--t24-ink)}
.t24-how li::before{content:counter(t24);display:block;margin-bottom:8px;font:500 34px/1 "CMU Serif",Georgia,serif;color:var(--t24-ink)}
.t24-how strong{display:block;margin-bottom:4px;font-size:17px;color:var(--t24-ink)}
.t24-how span{font-size:15px;line-height:1.5}

/* Cesta */
.t24-lock{overflow:hidden}
.t24-cart{position:fixed;inset:0;z-index:200;background:rgba(16,22,37,0);transition:background .24s}
.t24-cart.is-open{background:rgba(16,22,37,.45)}
.t24-cart-panel{position:absolute;top:0;right:0;bottom:0;width:min(440px,100%);overflow-y:auto;padding:22px 24px 32px;background:#f7f5f0;box-shadow:-20px 0 60px rgba(16,22,37,.2);transform:translateX(100%);transition:transform .24s cubic-bezier(.2,.7,.1,1)}
.t24-cart.is-open .t24-cart-panel{transform:none}
.t24-cart header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.t24-cart h2{margin:0;font:500 28px "CMU Serif",Georgia,serif;color:#18223d}
.t24-close{width:40px;height:40px;border:0;border-radius:50%;background:#e8e5dd;font-size:22px;cursor:pointer}
.t24-lines{margin:0;padding:0;list-style:none}
.t24-line{display:grid;grid-template-columns:64px 1fr;gap:14px;padding:14px 0;border-bottom:1px solid #d6dbd4}
.t24-line img{width:64px;height:64px;border-radius:10px;object-fit:cover;background:#f2f1ee}
.t24-line-name{margin:0 0 2px;font-weight:700;color:#18223d}
.t24-line .t24-muted{margin:0 0 8px;font-size:13px}
.t24-line-ctl{display:flex;align-items:center;gap:12px}
.t24-line-ctl strong{margin-left:auto}
.t24-total{margin-top:18px}
.t24-total p:first-child{display:flex;justify-content:space-between;align-items:baseline;margin:0;font-size:17px}
.t24-total strong{font:500 26px "CMU Serif",Georgia,serif;color:#18223d}
.t24-total .t24-muted{margin:2px 0 16px}
.t24-form label{display:block;margin-bottom:12px;font:600 13px Manrope,system-ui,sans-serif;color:#18223d}
.t24-form label small{font-weight:500;color:#525763}
.t24-form input:not([type=checkbox]),.t24-form textarea{display:block;width:100%;margin-top:6px;padding:11px 12px;border:1px solid #c9d0c9;border-radius:10px;background:#fffefb;font:500 15px Manrope,system-ui,sans-serif;color:#18223d}
.t24-two{display:grid;grid-template-columns:1fr 1.4fr;gap:12px}
.t24-check{display:flex!important;gap:10px;align-items:flex-start;font-weight:500!important;line-height:1.5}
.t24-check input{margin-top:4px;flex:none}
.t24-hp{position:absolute;left:-9999px;width:1px;height:1px}
.t24-form .t24-textbtn{display:block;margin:14px auto 0}
.t24-status{min-height:1.4em;margin:12px 0 0;font-size:14px}
.t24-status[data-state=error]{color:#9c3a2c}
.t24-done{display:flex;flex-direction:column;gap:12px}
.t24-done h3{margin:0;font:500 28px "CMU Serif",Georgia,serif;color:#18223d}
.t24-done p{margin:0;line-height:1.55}
.t24-fab{position:fixed;right:16px;bottom:16px;z-index:150;min-height:48px;padding:0 20px;border:0;border-radius:999px;background:#18223d;color:#fff;font:700 14px Manrope,system-ui,sans-serif;box-shadow:0 12px 30px rgba(16,22,37,.3);cursor:pointer}
.t24-fab[hidden]{display:none}

@media(max-width:900px){
  .t24-studio{grid-template-columns:1fr}
  .t24-viewer{position:static}
  .t24-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .t24-grid--cubes{grid-template-columns:repeat(2,minmax(0,1fr))}
  .t24-books{grid-template-columns:1fr}
  .t24-how ol{grid-template-columns:1fr}
}
@media(max-width:600px){
  .t24-top-inner{flex-direction:column;align-items:flex-start;gap:18px}
  .t24-grid:not(.t24-grid--cubes){grid-template-columns:1fr}
  .t24-buy{align-items:stretch}.t24-buy .t24-btn{width:100%}
  .t24-field input{font-size:26px}
}
@media(prefers-reduced-motion:reduce){.t24-cart,.t24-cart-panel,.t24-card figure img,.t24-cube{transition:none}}