/* Lector artículo a artículo (estudio-lector.js). Elegante, con aire, sin saturar. Claro (cristal) y oscuro. */
.lx{
  --lx-bg:#0E1712;--lx-sup:#131E18;--lx-sup2:#18251E;--lx-linea:rgba(233,229,214,.09);--lx-linea2:rgba(233,229,214,.16);
  --lx-txt:#ECE8DA;--lx-tenue:#A3AF9E;--lx-suave:#76836F;--lx-papel:#16211B;--lx-lit:#F1EDDF;--lx-ac:var(--ac,#1E7A5A);
  --lx-serif:"Literata","Source Serif 4",Georgia,"Times New Roman",serif;--lx-titulo:"Inter","Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  position:fixed;inset:0;z-index:8000;background:var(--lx-bg);color:var(--lx-txt);overflow:auto;-webkit-font-smoothing:antialiased;
  font:400 15px/1.55 var(--f-body,system-ui,-apple-system,"Segoe UI",sans-serif);animation:lxEntra .28s cubic-bezier(.2,.8,.2,1)}
html.cristal .lx{--lx-bg:#F6F7F5;--lx-sup:#FFFFFF;--lx-sup2:#F1F4F2;--lx-linea:rgba(20,32,26,.08);--lx-linea2:rgba(20,32,26,.14);--lx-txt:#17201B;--lx-tenue:#5B6862;--lx-suave:#8B958F;--lx-papel:#FFFFFF;--lx-lit:#1A2420}
@keyframes lxEntra{from{opacity:0;transform:translateY(8px)}}
.lx.lx-reducido,.lx.lx-reducido *{animation:none!important;transition:none!important}
body.lx-abierto{overflow:hidden}
.lx button{font:inherit;color:inherit;cursor:pointer}
.lx-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.lx-tenue{color:var(--lx-tenue)}
.lx-ceja{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--lx-ac)}
html:not(.cristal) .lx-ceja{color:color-mix(in srgb,var(--lx-ac) 55%,#fff)}
.lx-cargando{display:flex;align-items:center;justify-content:center;gap:12px;height:100%;color:var(--lx-tenue)}
.lx-cargando i{width:18px;height:18px;border-radius:50%;border:2px solid var(--lx-linea2);border-top-color:var(--lx-ac);animation:lxGira .8s linear infinite}
@keyframes lxGira{to{transform:rotate(360deg)}}

/* barra superior */
.lx-barra{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:12px;padding:12px 22px;background:color-mix(in srgb,var(--lx-bg) 86%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--lx-linea)}
.lx-ruta{font-size:13px;color:var(--lx-tenue);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;flex:1}
.lx-x{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:12px;border:1px solid var(--lx-linea);background:var(--lx-sup);flex:none}
.lx-x:hover{border-color:var(--lx-linea2)}
.lx-boton{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;border-radius:12px;border:1px solid var(--lx-linea2);background:var(--lx-sup);font-weight:600;font-size:14.5px;transition:transform .15s,background .15s}
.lx-boton:hover{background:var(--lx-sup2)}
.lx-boton:active{transform:scale(.98)}
.lx-boton.prim{background:var(--lx-ac);border-color:var(--lx-ac);color:#fff}
.lx-boton.prim:hover{background:color-mix(in srgb,var(--lx-ac) 86%,#000)}
.lx-boton.fino{min-height:36px;padding:0 12px;font-size:13px;border-radius:10px}
.lx-boton:disabled{opacity:.4;cursor:default}
.lx-avance{width:120px;height:4px;border-radius:99px;background:var(--lx-linea2);overflow:hidden;flex:none}
.lx-avance i{display:block;height:100%;background:var(--lx-ac);transition:width .4s}
.solo-movil{display:none}

/* prioridad */
.lx-prio{display:inline-flex;align-items:center;gap:7px;color:var(--pc);font-size:12.5px;font-weight:700;letter-spacing:.01em}
.lx-prio svg{flex:none}
.lx-prio b{font-weight:700}
.lx-prio i{font-style:normal;font-weight:500;color:var(--lx-tenue);margin-left:2px}
.lx-prio i::before{content:"· "}
.lx-p-sin{color:var(--lx-suave)}

/* portada */
.lx-portada,.lx-antes{min-height:100%}
.lx-hero{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:48px;align-items:center;max-width:1180px;margin:0 auto;padding:56px 32px 40px}
.lx-hero-arte{position:relative;aspect-ratio:1;border-radius:36px;overflow:hidden;color:#fff;display:grid;place-items:center;
  background:radial-gradient(120% 90% at 20% 10%,color-mix(in srgb,var(--lx-ac) 70%,#fff) 0%,var(--lx-ac) 45%,color-mix(in srgb,var(--lx-ac) 55%,#000) 100%);
  box-shadow:0 40px 80px -40px color-mix(in srgb,var(--lx-ac) 70%,#000),inset 0 1px 0 rgba(255,255,255,.25)}
.lx-hero-arte::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(135deg,rgba(255,255,255,.06) 0 2px,transparent 2px 22px);mask:radial-gradient(circle at 70% 70%,#000,transparent 70%)}
.lx-hero-arte svg{position:absolute;width:42%;height:42%;right:9%;bottom:9%;opacity:.9;stroke-width:1.6}
.lx-num{position:absolute;left:9%;top:4%;font:800 clamp(110px,16vw,220px)/1 var(--lx-titulo);letter-spacing:-.04em;color:rgba(255,255,255,.94);text-shadow:0 10px 40px rgba(0,0,0,.25)}
.lx-hero-txt h1{margin:10px 0 10px;font:750 clamp(34px,4.4vw,56px)/1.04 var(--lx-titulo);letter-spacing:-.035em}
.lx-sub{margin:0 0 26px;font-size:18px;line-height:1.5;color:var(--lx-tenue);max-width:560px}
.lx-datos{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:22px}
.lx-datos div{padding:14px 14px 12px;border-radius:16px;background:var(--lx-sup);border:1px solid var(--lx-linea)}
.lx-datos b{display:block;font-size:22px;font-weight:700;letter-spacing:-.02em}
.lx-datos span{display:block;font-size:12px;color:var(--lx-tenue);margin-top:2px;line-height:1.3}
.lx-progreso{margin-bottom:24px}
.lx-progreso div{display:flex;justify-content:space-between;font-size:13px;color:var(--lx-tenue);margin-bottom:6px}
.lx-progreso div b{color:var(--lx-txt)}
.lx-progreso>i{display:block;height:6px;border-radius:99px;background:var(--lx-linea2);overflow:hidden}
.lx-progreso>i>i{display:block;height:100%;background:var(--lx-ac);border-radius:99px;transition:width .6s}
.lx-progreso small{display:block;margin-top:6px;font-size:12.5px;color:var(--lx-suave)}
.lx-acciones{display:flex;gap:10px;flex-wrap:wrap}
.lx-fila{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;max-width:1180px;margin:0 auto;padding:0 32px 18px}
.lx-tarjeta{background:var(--lx-sup);border:1px solid var(--lx-linea);border-radius:22px;padding:24px 26px}
.lx-tarjeta h2{margin:0 0 6px;font-size:17px;letter-spacing:-.01em}
.lx-tarjeta>p{margin:0 0 16px;font-size:14px}
.lx-reparto{display:flex;height:12px;border-radius:99px;overflow:hidden;gap:2px;margin-bottom:16px}
.lx-reparto i{display:block;height:100%}
.lx-leyenda{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.lx-leyenda li{display:flex;align-items:center;justify-content:space-between;font-size:13.5px}
.lx-leyenda li>span{color:var(--lx-tenue);font-weight:600}
.lx-modos{display:flex;flex-direction:column;gap:10px}
.lx-modo{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:14px 16px;border-radius:14px;border:1px solid var(--lx-linea);background:var(--lx-sup2);text-align:left;transition:border-color .15s}
.lx-modo b{font-size:14.5px}.lx-modo span{font-size:13px;color:var(--lx-tenue)}
.lx-modo.on{border-color:var(--lx-ac);box-shadow:inset 0 0 0 1px var(--lx-ac)}
.lx-bloques{max-width:1116px;margin:0 auto 18px}
.lx-bloques ol{margin:12px 0 0;padding:0;list-style:none;counter-reset:b;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 26px}
.lx-bloques li{counter-increment:b;display:flex;flex-direction:column;padding:10px 0 10px 38px;position:relative;border-bottom:1px solid var(--lx-linea)}
.lx-bloques li::before{content:counter(b);position:absolute;left:0;top:10px;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-size:12px;font-weight:700;background:var(--lx-sup2);color:var(--lx-tenue)}
.lx-bloques li span{font-weight:600;font-size:14px}.lx-bloques li em{font-style:normal;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--lx-suave)}.lx-bloques li small{color:var(--lx-tenue);font-size:12.5px}
.lx-pie{max-width:1116px;margin:24px auto 40px;padding:0 32px;font-size:11.5px;color:var(--lx-suave)}

/* antes de empezar */
.lx-col{max-width:760px;margin:0 auto;padding:44px 26px 60px}
.lx-col h1{margin:8px 0 18px;font:750 clamp(34px,5vw,54px)/1.05 var(--lx-titulo);letter-spacing:-.035em}
.lx-intro{font:400 19px/1.7 var(--lx-serif);margin:0 0 34px}
.lx-col section{margin:0 0 38px}
.lx-col h2{display:flex;align-items:center;gap:12px;margin:0 0 6px;font-size:20px}
.lx-col h2 span{display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:var(--lx-ac);color:#fff;font-size:14px}
.lx-claves{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.lx-clave{padding:9px 14px;border-radius:999px;border:1px solid var(--lx-linea2);background:var(--lx-sup);font-weight:600;font-size:14px}
.lx-clave.on{border-color:var(--lx-ac);background:color-mix(in srgb,var(--lx-ac) 14%,var(--lx-sup))}
.lx-clave-caja{margin-top:12px;padding:16px 18px;border-radius:16px;background:var(--lx-sup);border:1px solid var(--lx-linea);animation:lxEntra .2s}
.lx-clave-caja p{margin:6px 0 10px}
.lx-reglas{list-style:none;padding:0;margin:12px 0 0;display:flex;flex-direction:column;gap:10px}
.lx-reglas li{display:flex;gap:14px;align-items:flex-start;justify-content:space-between;padding:16px 18px;border-radius:16px;background:var(--lx-sup);border:1px solid var(--lx-linea);border-left:4px solid var(--lx-ac)}
.lx-reglas p{margin:0;font:500 16px/1.55 var(--lx-serif)}
.lx-trampas{display:grid;gap:10px;margin-top:12px}
.lx-trampa{padding:16px 18px;border-radius:16px;background:color-mix(in srgb,#C8402F 8%,var(--lx-sup));border:1px solid color-mix(in srgb,#C8402F 25%,transparent)}
.lx-trampa b{display:block;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:#D9584A}
.lx-trampa p{margin:6px 0 8px}
.lx-objetivos{list-style:none;padding:0;margin:12px 0 10px;display:flex;flex-direction:column;gap:8px}
.lx-objetivos li{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:var(--lx-sup);border:1px solid var(--lx-linea)}
.lx-objetivos li span{flex:1;font-size:14.5px}
.lx-ir{border:0;background:none;color:var(--lx-ac);font-weight:700;font-size:13px;white-space:nowrap;padding:4px 0}
html:not(.cristal) .lx-ir{color:color-mix(in srgb,var(--lx-ac) 50%,#fff)}
.lx-ok{font-style:normal;font-size:12px;font-weight:700;color:#3E9B6A;padding:3px 10px;border-radius:99px;background:color-mix(in srgb,#3E9B6A 14%,transparent)}

/* lector */
.lx-lector{display:flex;flex-direction:column;min-height:100%}
.lx-cuerpo{display:grid;grid-template-columns:300px minmax(0,1fr);flex:1;min-height:0}
.lx-indice{position:sticky;top:63px;height:calc(100vh - 63px);overflow-y:auto;padding:16px 12px 40px;border-right:1px solid var(--lx-linea)}
.lx-ib{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--lx-suave);padding:16px 10px 6px}
.lx-ia{display:flex;align-items:flex-start;gap:10px;width:100%;padding:8px 10px;border:0;border-radius:10px;background:none;text-align:left}
.lx-ia:hover{background:var(--lx-sup)}
.lx-ia.on{background:var(--lx-sup2);box-shadow:inset 3px 0 0 var(--lx-ac)}
.lx-ia .lx-prio{margin-top:4px}
.lx-ia span{display:flex;flex-direction:column;min-width:0}
.lx-ia b{font-size:13px;font-weight:600}
.lx-ia small{font-size:12px;color:var(--lx-tenue);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lx-ia.visto b::after{content:" ✓";color:#3E9B6A;font-weight:700}
.lx-hoja{outline:0;padding:40px 32px 80px;min-width:0}
.lx-modo-aviso{max-width:var(--lx-ancho,720px);margin:0 auto 18px;padding:10px 14px;border-radius:12px;background:var(--lx-sup);border:1px solid var(--lx-linea);font-size:13px;color:var(--lx-tenue)}
.lx-modo-aviso button{border:0;background:none;color:var(--lx-ac);font-weight:700;padding:0}
.lx-art{max-width:var(--lx-ancho,720px);margin:0 auto;animation:lxEntra .25s}
.lx-art-cab{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.lx-prio-boton{display:inline-flex;align-items:center;padding:7px 12px;border-radius:999px;border:1px solid color-mix(in srgb,currentColor 25%,transparent);background:color-mix(in srgb,var(--lx-sup) 80%,transparent)}
.lx-prio-boton:hover{background:var(--lx-sup2)}
.lx-art-num{font:700 13px var(--lx-titulo);letter-spacing:.14em;text-transform:uppercase;color:var(--lx-tenue)}
.lx-art-tit{margin:6px 0 6px;font:700 clamp(26px,3vw,34px)/1.15 var(--lx-titulo);letter-spacing:-.025em;text-transform:none}
.lx-art-norma{font-size:13px;color:var(--lx-suave);margin-bottom:28px}
.lx-ligero{padding:12px 16px;border-radius:12px;background:color-mix(in srgb,#3E9B6A 10%,var(--lx-sup));font-size:14px;margin:0 0 20px}
.lx-art.ligero .lx-lit{opacity:.92}
.lx-lit{position:relative;padding:30px 34px 34px;border-radius:22px;background:var(--lx-papel);border:1px solid var(--lx-linea);box-shadow:0 1px 0 var(--lx-linea),0 24px 50px -40px rgba(0,0,0,.45)}
.lx-lit p{margin:0 0 1em;font:400 var(--lx-letra,19px)/var(--lx-inter,1.75) var(--lx-serif);color:var(--lx-lit);hyphens:auto;-webkit-hyphens:auto}
.lx-lit p:last-of-type{margin-bottom:0}
.lx-lit-sello{position:absolute;top:-10px;left:26px;padding:2px 10px;border-radius:99px;font-size:10.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;background:var(--lx-ac);color:#fff}
/* colores del temario (suaves) */
.lx .ed-verde{background:color-mix(in srgb,#5FD07A 26%,transparent)}
.lx .ed-amarillo{background:color-mix(in srgb,#FFE74A 38%,transparent)}
.lx .ed-azul{background:color-mix(in srgb,#69B4FF 28%,transparent)}
.lx .ed-naranja{background:color-mix(in srgb,#FFB04D 32%,transparent)}
.lx .ed-rosa{background:color-mix(in srgb,#F28CC2 30%,transparent)}
.lx [class*="ed-"]{border-radius:3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.lx.lx-sin-colores [class*="ed-"]{background:none}
/* subrayados del alumno (más marcados, con línea) */
.lx .um{border-radius:2px;cursor:pointer;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.lx .um-amarillo,.lx-sw.um-amarillo,.lx-color .um-amarillo{background:linear-gradient(transparent 52%,#FFE14A 52%)}
.lx .um-rojo,.lx-sw.um-rojo,.lx-color .um-rojo{background:linear-gradient(transparent 52%,#FF8A80 52%)}
.lx .um-azul,.lx-sw.um-azul,.lx-color .um-azul{background:linear-gradient(transparent 52%,#82C4FF 52%)}
.lx .um-verde,.lx-sw.um-verde,.lx-color .um-verde{background:linear-gradient(transparent 52%,#8BE3A0 52%)}
.lx .um-morado,.lx-sw.um-morado,.lx-color .um-morado{background:linear-gradient(transparent 52%,#C7A6FF 52%)}
html:not(.cristal) .lx .um{color:#17201B}
.lx .um-t-doble{text-decoration:underline double;text-decoration-color:#B98A1E;text-underline-offset:4px}
.lx .um-t-pregunta{outline:1.5px dashed #8E6BD9;outline-offset:1px}
.lx .um-t-duda{text-decoration:underline wavy #E5564B;text-underline-offset:4px}
.lx .um-nota{position:relative}
.lx .um-nota::after{content:"";display:inline-block;width:7px;height:7px;margin-left:2px;border-radius:50%;background:#2F6FDB;vertical-align:super}

/* capas */
.lx-capas{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 14px}
.lx-capa-b{padding:9px 14px;border-radius:999px;border:1px solid var(--lx-linea2);background:var(--lx-sup);font-size:13.5px;font-weight:600;color:var(--lx-tenue);transition:all .15s}
.lx-capa-b:hover{color:var(--lx-txt)}
.lx-capa-b.on{color:var(--lx-txt);border-color:var(--lx-ac);background:color-mix(in srgb,var(--lx-ac) 12%,var(--lx-sup))}
.lx-capas-cont{display:flex;flex-direction:column;gap:12px}
.lx-capa{padding:20px 22px;border-radius:18px;background:var(--lx-sup);border:1px solid var(--lx-linea);animation:lxEntra .22s}
.lx-capa h3{margin:0 0 8px;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--lx-tenue)}
.lx-capa p{margin:0 0 .7em;font-size:16px;line-height:1.65}
.lx-capa p:last-child{margin-bottom:0}
.lx-capa ul{margin:0;padding-left:18px}.lx-capa li{margin:4px 0}
.lx-c-facil{border-left:4px solid #3E9B6A}
.lx-c-trampa{border-left:4px solid #C8402F;background:color-mix(in srgb,#C8402F 6%,var(--lx-sup))}
.lx-c-truco{border-left:4px solid #8E6BD9}
.lx-c-historia{border-left:4px solid #D9741F}
.lx-ex{font-weight:500;letter-spacing:.01em}
.lx-rec{font-weight:600}
.lx-et{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--lx-tenue);margin-right:4px}
.lx-quiz .lx-q{font-weight:600;margin-bottom:12px}
.lx-op{display:block;width:100%;text-align:left;margin:6px 0;padding:12px 14px;border-radius:12px;border:1px solid var(--lx-linea2);background:var(--lx-sup2);font-size:14.5px}
.lx-op.bien{border-color:#3E9B6A;background:color-mix(in srgb,#3E9B6A 16%,var(--lx-sup2))}
.lx-op.mal{border-color:#C8402F;background:color-mix(in srgb,#C8402F 14%,var(--lx-sup2))}
.lx-sol{margin-top:12px;padding:14px;border-radius:12px;background:var(--lx-sup2)}
.lx-sol p{margin:6px 0 10px;font-size:14.5px}
.lx-historia .lx-dato{padding:10px 12px;border-radius:10px;background:var(--lx-sup2)}
.lx-cuento{font:400 17px/1.7 var(--lx-serif);margin:12px 0}
.lx-con{font-size:14.5px}
.lx-limite{font-size:12.5px;color:var(--lx-tenue);font-style:italic}
.lx-mini{display:flex;flex-direction:column;gap:6px;margin-top:10px}
.lx-mini button{text-align:left;padding:10px 12px;border-radius:10px;border:1px solid var(--lx-linea2);background:var(--lx-sup2)}
.lx-mini button.bien{border-color:#3E9B6A}.lx-mini button.mal{border-color:#C8402F}
.lx-hist-acc{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;font-size:12.5px}
.lx-nav{max-width:var(--lx-ancho,720px);margin:34px auto 0;display:grid;grid-template-columns:1fr 1.4fr 1fr;gap:10px}

/* barra flotante de subrayado */
.lx-flota{position:fixed;z-index:8100;display:flex;align-items:center;gap:6px;padding:8px;border-radius:14px;background:#141C18;color:#F2F0E8;box-shadow:0 18px 40px -12px rgba(0,0,0,.55);animation:lxEntra .15s;flex-wrap:wrap;max-width:calc(100vw - 16px)}
.lx-flota[hidden]{display:none}
.lx-flota button{border:0;background:rgba(255,255,255,.08);color:inherit;font:600 12.5px var(--f-body,system-ui);padding:7px 10px;border-radius:9px;cursor:pointer}
.lx-flota button:hover{background:rgba(255,255,255,.16)}
.lx-flota .lx-sw{width:26px;height:26px;padding:0;border-radius:50%;background-color:rgba(255,255,255,.95)!important;border:2px solid transparent}
.lx-flota .lx-sw:hover{border-color:#fff}
.lx-sep{width:1px;height:22px;background:rgba(255,255,255,.18);margin:0 2px}

/* hoja lateral */
.lx-hoja-lat{position:fixed;top:0;right:0;bottom:0;z-index:70;width:min(480px,100vw);overflow-y:auto;padding:26px 26px 40px;background:var(--lx-sup);border-left:1px solid var(--lx-linea2);box-shadow:-30px 0 60px -30px rgba(0,0,0,.5);transform:translateX(30px);opacity:0;transition:transform .22s cubic-bezier(.2,.8,.2,1),opacity .22s}
.lx-hoja-lat.ver{transform:none;opacity:1}
.lx-hoja-x{float:right}
.lx-hoja-lat h2{margin:4px 0 12px;font-size:20px}
.lx-hoja-lat h3{margin:20px 0 8px;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--lx-tenue)}
.lx-hoja-lat p{line-height:1.6}
.lx-ficha-prio h2 .lx-prio{font-size:16px}
.lx-ap{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.lx-ap li{padding:10px 12px;border-radius:12px;background:var(--lx-sup2);font-size:13.5px}
.lx-ap li span{display:block;margin-top:4px;color:var(--lx-tenue)}
.lx-meta{font-size:12.5px;margin-top:18px}
.lx-seg{display:inline-flex;flex-wrap:wrap;gap:4px;padding:4px;border-radius:12px;background:var(--lx-sup2);border:1px solid var(--lx-linea)}
.lx-seg button{border:0;background:none;padding:8px 12px;border-radius:9px;font-size:13px;font-weight:600;color:var(--lx-tenue)}
.lx-seg button.on{background:var(--lx-sup);color:var(--lx-txt);box-shadow:0 1px 3px rgba(0,0,0,.15)}
.lx-check{display:flex;gap:10px;align-items:flex-start;margin:12px 0;font-size:14px}
.lx-color{display:flex;align-items:center;gap:10px;margin:8px 0}
.lx-color i{width:34px;height:20px;border-radius:5px;flex:none}
.lx-color input,.lx-hoja-lat input[type=text]{flex:1;min-height:38px;padding:0 10px;border-radius:10px;border:1px solid var(--lx-linea2);background:var(--lx-bg);color:var(--lx-txt);font:inherit}
.lx-cita{margin:0 0 12px;padding:14px 16px;border-radius:12px;font:500 16px/1.6 var(--lx-serif);color:#17201B}
.lx-nota{padding:12px 14px;border-radius:12px;background:var(--lx-sup2)}
.lx-subs{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}
.lx-subs button{display:flex;flex-direction:column;gap:2px;width:100%;text-align:left;padding:10px 12px;border-radius:12px;border:1px solid var(--lx-linea);background:var(--lx-sup2)}
.lx-subs b{font-size:12px;color:var(--lx-tenue)}
.lx-subs span{font:400 14.5px/1.5 var(--lx-serif)}
.lx-hueco-txt{font:400 18px/1.8 var(--lx-serif);padding:18px;border-radius:14px;background:var(--lx-papel);border:1px solid var(--lx-linea)}
.lx-hueco{display:inline-block;min-width:60px;border-bottom:2px solid var(--lx-ac);background:color-mix(in srgb,var(--lx-ac) 12%,transparent);border-radius:4px 4px 0 0;white-space:pre-wrap}
.lx-hueco.visto{background:color-mix(in srgb,#FFE14A 45%,transparent);color:#17201B}

@media (max-width:1000px){
  .lx-hero{grid-template-columns:1fr;gap:26px;padding:28px 18px 26px}
  .lx-hero-arte{max-width:340px;width:100%;margin:0 auto;aspect-ratio:16/11}
  .lx-fila{grid-template-columns:1fr;padding:0 18px 14px}
  .lx-bloques{margin:0 18px 18px}.lx-bloques ol{grid-template-columns:1fr}
  .lx-cuerpo{grid-template-columns:1fr}
  .lx-indice{position:fixed;top:0;left:0;bottom:0;z-index:20;width:min(340px,88vw);height:auto;background:var(--lx-bg);transform:translateX(-102%);transition:transform .22s;box-shadow:30px 0 60px -30px rgba(0,0,0,.5)}
  .lx-lector.indice-abierto .lx-indice{transform:none}
  .solo-movil{display:inline-flex}
  .lx-hoja{padding:24px 16px 60px}
  .lx-lit{padding:24px 20px 26px;border-radius:18px}
  .lx-avance{width:60px}
  .lx-barra{padding:10px 12px;gap:8px}
  .lx-barra .lx-boton.fino:not(.solo-movil){padding:0 10px}
}
@media (max-width:640px){
  .lx-datos{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lx-nav{grid-template-columns:1fr 1fr}.lx-nav [data-lx=tengo]{grid-column:1/-1;order:-1}
  .lx-acciones .lx-boton{flex:1 1 100%}
  .lx-ruta{display:none}
  .lx-col{padding:28px 18px 48px}
}

/* --- v2: herramientas rápidas, recuadros, dibujos, buscador, número claro --- */
.lx-herr{position:sticky;top:72px;z-index:4;max-width:var(--lx-ancho,720px);margin:0 auto 22px;display:flex;align-items:center;gap:6px;flex-wrap:wrap;padding:8px 10px;border-radius:16px;background:color-mix(in srgb,var(--lx-sup) 92%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--lx-linea2);box-shadow:0 10px 30px -18px rgba(0,0,0,.4)}
.lx-h{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 10px;border:0;border-radius:10px;background:none;color:var(--lx-tenue);font-size:13px;font-weight:600}
.lx-h:hover{background:var(--lx-sup2);color:var(--lx-txt)}
.lx-h.on{background:var(--lx-ac);color:#fff}
.lx-sep2{width:1px;height:22px;background:var(--lx-linea2);margin:0 4px}
.lx-col{width:26px;height:26px;border-radius:50%;border:2px solid var(--lx-linea2);padding:0;background-color:#fff!important}
.lx-col.on{border-color:var(--lx-txt);box-shadow:0 0 0 2px var(--lx-sup),0 0 0 4px var(--lx-txt)}
.lx-herr-ayuda{flex:1 1 100%;font-size:12px;color:var(--lx-suave);padding:2px 4px 0}
.lx .um-t-caja{background:none!important;box-shadow:none;outline:2.5px solid currentColor;outline-offset:2px;border-radius:4px}
.lx .um-t-caja.um-amarillo{outline-color:#E0A800}.lx .um-t-caja.um-rojo{outline-color:#E5564B}.lx .um-t-caja.um-azul{outline-color:#2F6FDB}.lx .um-t-caja.um-verde{outline-color:#2E9D5B}.lx .um-t-caja.um-morado{outline-color:#8E6BD9}
html:not(.cristal) .lx .um-t-caja{color:inherit}
.lx-lit p{position:relative}
.lx-dib{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.lx.lx-dibujando .lx-lit p{cursor:crosshair;user-select:none;-webkit-user-select:none;touch-action:none}
.lx.lx-borrando .lx-dib path{pointer-events:stroke;cursor:pointer}
.lx.lx-borrando .um{cursor:not-allowed}
.lx-busca{position:relative;display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;border-radius:12px;border:1px solid var(--lx-linea2);background:var(--lx-sup);color:var(--lx-tenue);flex:0 1 300px;min-width:0}
.lx-busca:focus-within{border-color:var(--lx-ac)}
.lx-busca input{flex:1;min-width:0;border:0;background:none;outline:0;color:var(--lx-txt);font:inherit;font-size:14px}
.lx-busca-portada{height:48px;max-width:560px;margin-bottom:16px;flex:none}
.lx-res{position:absolute;top:calc(100% + 6px);left:0;right:0;min-width:300px;max-height:420px;overflow:auto;z-index:30;padding:6px;border-radius:14px;background:var(--lx-sup);border:1px solid var(--lx-linea2);box-shadow:0 24px 50px -20px rgba(0,0,0,.5)}
.lx-res button{display:flex;align-items:flex-start;gap:10px;width:100%;text-align:left;padding:10px;border:0;border-radius:10px;background:none}
.lx-res button:hover{background:var(--lx-sup2)}
.lx-res b{display:block;font-size:13.5px;color:var(--lx-txt)}
.lx-res small{display:block;font-size:12px;color:var(--lx-tenue)}
.lx-res p{margin:8px;font-size:13px}
.lx-in{font-size:12px;font-weight:700;color:var(--lx-txt);padding:18px 10px 2px;border-top:1px solid var(--lx-linea);margin-top:6px}
.lx-in:first-child{border-top:0;margin-top:0}
.lx-art-num{font:800 clamp(30px,3.6vw,42px)/1.05 var(--lx-titulo)!important;letter-spacing:-.03em!important;text-transform:none!important;color:var(--lx-txt)!important}
.lx-art-norma{font-size:14px;color:var(--lx-tenue);margin:4px 0 14px;font-weight:600}
.lx-art-tit{font-size:clamp(17px,1.8vw,20px)!important;font-weight:700!important;letter-spacing:.04em!important;text-transform:uppercase;color:var(--lx-ac);margin:0 0 26px!important}
html:not(.cristal) .lx-art-tit{color:color-mix(in srgb,var(--lx-ac) 55%,#fff)}
.lx-ia b{font-size:13.5px}
@media (max-width:1000px){.lx-herr{top:62px;padding:6px}.lx-h span{display:none}.lx-h{padding:0 9px}.lx-busca:not(.lx-busca-portada){flex:1 1 auto}.lx-avance{display:none}}
@media (max-width:640px){.lx-barra .lx-busca:not(.lx-busca-portada){position:static}.lx-barra .lx-res{left:8px;right:8px;top:58px;position:fixed}}

/* --- portadas en el Temario --- */
#smTemario.lx-temario .sm-lista{display:grid!important;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
#smTemario.lx-temario .sm-tema{position:relative;display:flex!important;flex-direction:column;align-items:stretch!important;gap:0!important;padding:0!important;overflow:hidden;border-radius:22px!important;text-align:left;min-height:0;transition:transform .2s,box-shadow .2s}
#smTemario.lx-temario .sm-tema:not(.off):hover{transform:translateY(-3px);box-shadow:0 24px 40px -24px color-mix(in srgb,var(--ac) 70%,#000)}
#smTemario.lx-temario .sm-tema .sm-n,#smTemario.lx-temario .sm-tema .sm-ir{display:none!important}
.lx-tp-arte{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;color:#fff;
  background:radial-gradient(120% 90% at 15% 10%,color-mix(in srgb,var(--ac) 65%,#fff) 0%,var(--ac) 50%,color-mix(in srgb,var(--ac) 55%,#000) 100%)}
.lx-tp-arte::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(135deg,rgba(255,255,255,.06) 0 2px,transparent 2px 18px)}
.lx-tp-num{position:absolute;left:16px;top:6px;font:800 64px/1 "Inter",system-ui,sans-serif;letter-spacing:-.04em;color:rgba(255,255,255,.95)}
.lx-tp-arte svg{position:absolute;right:14px;bottom:12px;width:58px;height:58px;opacity:.9;stroke-width:1.8}
#smTemario.lx-temario .sm-tema .sm-t{display:flex!important;flex-direction:column;gap:4px;padding:16px 18px 18px!important}
.lx-tp-ceja{font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ac)}
#smTemario.lx-temario .sm-tema .sm-t b{font-size:17px;line-height:1.25;letter-spacing:-.01em}
.lx-tp-sub{font-style:normal;font-size:13px;line-height:1.45;color:var(--muted,#6b7770)}
#smTemario.lx-temario .sm-tema .sm-t small{margin-top:6px;font-size:12.5px}
#smTemario.lx-temario .sm-tema.off .lx-tp-arte{filter:grayscale(.85);opacity:.6}
@media (max-width:640px){#smTemario.lx-temario .sm-lista{grid-template-columns:1fr 1fr;gap:10px}.lx-tp-num{font-size:44px;left:12px}.lx-tp-arte svg{width:40px;height:40px}.lx-tp-sub{display:none}#smTemario.lx-temario .sm-tema .sm-t{padding:12px 12px 14px!important}#smTemario.lx-temario .sm-tema .sm-t b{font-size:14.5px}}
.lx-busca input{border:0!important;box-shadow:none!important;padding:0!important;background:none!important;height:auto!important;border-radius:0!important}
.lx-h{padding:0 8px;font-size:12.5px;gap:5px}
.lx-h[data-lx=deshacer] span{display:none}
.lx-herr{gap:4px}

/* --- «Sigue donde lo dejaste» e historial, encima del Temario --- */
.lx-seguir{margin:0 0 18px;display:flex;flex-direction:column;gap:8px}
.lx-seguir-prin{display:flex;align-items:center;gap:16px;width:100%;padding:14px 16px;border-radius:22px;text-align:left;cursor:pointer;font:inherit;color:inherit;
  background:var(--card,rgba(255,255,255,.75));border:1px solid color-mix(in srgb,var(--ac) 35%,transparent);box-shadow:0 18px 36px -26px color-mix(in srgb,var(--ac) 80%,#000);transition:transform .2s}
.lx-seguir-prin:hover{transform:translateY(-2px)}
.lx-seguir-num{flex:none;width:56px;height:56px;border-radius:16px;display:grid;place-items:center;color:#fff;font:800 26px/1 "Inter",system-ui,sans-serif;
  background:radial-gradient(120% 90% at 15% 10%,color-mix(in srgb,var(--ac) 65%,#fff) 0%,var(--ac) 55%,color-mix(in srgb,var(--ac) 55%,#000) 100%)}
.lx-seguir-txt{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}
.lx-seguir-txt small{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ac)}
.lx-seguir-txt b{font-size:17px;line-height:1.3}
.lx-seguir-txt em{font-style:normal;font-size:13px;color:var(--muted,#6b7770);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lx-seguir-ir{flex:none;padding:10px 16px;border-radius:99px;background:var(--ac);color:#fff;font-weight:700;font-size:14px}
.lx-hist{border-radius:18px;padding:4px 14px;background:var(--card,rgba(255,255,255,.6));border:1px solid var(--line,rgba(20,32,26,.1))}
.lx-hist summary{cursor:pointer;padding:10px 0;font-size:14px;font-weight:600}
.lx-hist ul{list-style:none;margin:0 0 10px;padding:0;display:flex;flex-direction:column;gap:4px}
.lx-hist li button{width:100%;display:flex;justify-content:space-between;gap:12px;padding:9px 10px;border:0;border-radius:12px;background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer}
.lx-hist li button:hover{background:var(--line,rgba(20,32,26,.06))}
.lx-hist li b{font-size:14px;font-weight:600}
.lx-hist li span{flex:none;font-size:12.5px;color:var(--muted,#6b7770)}
@media (max-width:640px){.lx-seguir-num{width:46px;height:46px;font-size:21px;border-radius:13px}.lx-seguir-ir{display:none}.lx-seguir-txt b{font-size:15.5px}.lx-hist li button{flex-direction:column;gap:2px}}