:root{--texto:#1C1A17;--fondo:#FAF7F0;--tarjeta:#FFFFFF;--secundario:#6B6355;--tenue:#786F65;--borde:#E0D9CB;--acento:#0F6E56;--link:#0F6E56;--ocre:#C4A24A;--fondo-suave:#F1EAD9;--barra-fondo:#8F8873;--error:#B3261E;color-scheme:light;--svg-8a8a8a:#717171;--svg-4a4a8a:#4a4a8a;--svg-305813:#305813;--svg-57450d:#57450d;--svg-125a55:#125a55;--svg-234b74:#234b74;--svg-602d71:#602d71;--svg-692a67:#692a67;--svg-2f3f92:#2f3f92;--svg-713420:#713420;--svg-255d13:#255d13;--svg-1f5c3d:#1f5c3d;--svg-4b4b0b:#4b4b0b;--svg-7a2e3c:#7a2e3c;--svg-000000:#000000}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--texto:#E6E1D7;--fondo:#141310;--tarjeta:#1E1C18;--secundario:#9C9485;--tenue:#847E72;--borde:#2E2B26;--acento:#2F7D64;--link:#6FA893;--ocre:#C4A24A;--fondo-suave:#1B1915;--barra-fondo:#736B5C;--error:#E5675C;color-scheme:dark;--svg-8a8a8a:#8a8a8a;--svg-4a4a8a:#7777b6;--svg-305813:#4d8d1e;--svg-57450d:#9b7b17;--svg-125a55:#1c8c84;--svg-234b74:#3e81c5;--svg-602d71:#a860c0;--svg-692a67:#bc56b8;--svg-2f3f92:#6878ce;--svg-713420:#c8603e;--svg-255d13:#398f1d;--svg-1f5c3d:#308d5e;--svg-4b4b0b:#828213;--svg-7a2e3c:#c25e70;--svg-000000:#7d7d7d}}:root[data-theme=dark]{--texto:#E6E1D7;--fondo:#141310;--tarjeta:#1E1C18;--secundario:#9C9485;--tenue:#847E72;--borde:#2E2B26;--acento:#2F7D64;--link:#6FA893;--ocre:#C4A24A;--fondo-suave:#1B1915;--barra-fondo:#736B5C;--error:#E5675C;color-scheme:dark;--svg-8a8a8a:#8a8a8a;--svg-4a4a8a:#7777b6;--svg-305813:#4d8d1e;--svg-57450d:#9b7b17;--svg-125a55:#1c8c84;--svg-234b74:#3e81c5;--svg-602d71:#a860c0;--svg-692a67:#bc56b8;--svg-2f3f92:#6878ce;--svg-713420:#c8603e;--svg-255d13:#398f1d;--svg-1f5c3d:#308d5e;--svg-4b4b0b:#828213;--svg-7a2e3c:#c25e70;--svg-000000:#7d7d7d}*{box-sizing:border-box}body{margin:0;color:var(--texto);background:var(--fondo);font-family:var(--font-sans),-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;line-height:1.55}a{color:var(--link)}.header{position:relative;display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;border-bottom:1px solid var(--borde)}.marca{font-family:var(--font-serif),Georgia,serif;font-weight:600;font-size:1.25rem;text-decoration:none;color:var(--texto)}.header-derecha{display:flex;align-items:center;gap:1rem}.boton-tema{background:none;border:1px solid var(--borde);color:var(--secundario);border-radius:6px;padding:.35rem .7rem;font-size:.8rem;cursor:pointer;white-space:nowrap}.boton-tema,.nav-principal{font-family:var(--font-sans),sans-serif}.nav-principal a{color:var(--texto);text-decoration:none}.nav-principal a:hover{color:var(--link)}.nav-principal{display:flex;gap:1rem;font-size:.95rem}.boton-menu{display:none}@media (max-width:640px){.boton-menu{display:flex;align-items:center;justify-content:center;background:none;border:1px solid var(--borde);border-radius:6px;width:2.25rem;height:2.25rem;padding:0;font-size:1.15rem;line-height:1;color:var(--texto);cursor:pointer}.nav-principal{display:none}.nav-principal.abierto{display:flex;flex-direction:column;gap:0;position:absolute;top:100%;left:0;right:0;background:var(--fondo);border-bottom:1px solid var(--borde);padding:.25rem 1.25rem .75rem;z-index:10}.nav-principal.abierto a{padding:.65rem 0;border-bottom:1px solid var(--fondo-suave)}}.contenedor{max-width:760px;margin:0 auto;padding:1.25rem}.footer{text-align:center;padding:2rem 1rem}.footer,.migas{color:var(--secundario);font-size:.85rem}.migas{margin-bottom:1rem}.migas a{text-decoration:none}.migas-separador{color:var(--secundario)}h1{font-size:1.6rem;margin:0 0 1rem}.titulo-marca{font-family:var(--font-serif),Georgia,serif}h2{font-size:1.2rem;margin:1.75rem 0 .75rem}.formula{background:var(--fondo-suave);border-left:3px solid var(--acento);padding:.75rem 1rem;margin:1rem 0;overflow-x:auto}.katex{display:inline-block;max-width:100%;overflow-x:auto;overflow-y:hidden;font-size:1.05em;vertical-align:baseline}.katex-display .katex{font-size:1.21em}.bloque{border:1px solid var(--borde);border-radius:6px;padding:1rem;margin:1rem 0}.bloque-titulo{font-weight:600;margin-bottom:.5rem;font-size:.9rem;text-transform:uppercase;letter-spacing:.03em;color:var(--secundario)}.error-tipico{background:var(--fondo-suave);border-left:3px solid var(--ocre)}.bloque-aviso{border-left:2px solid var(--ocre);padding:.25rem 0 .25rem 1.25rem;margin:1.5rem 0}.bloque-aviso-etiqueta{font-family:var(--font-sans),sans-serif;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--tenue);margin:0 0 .6rem}.grafico{max-width:100%;margin:1rem 0}.grafico img,.grafico svg{max-width:100%;height:auto}.ejemplo{margin:1rem 0;padding:1rem;border:1px solid var(--borde);border-radius:6px}.ejemplo-enunciado{font-weight:600}.actividad{margin:1.5rem 0;padding-bottom:1.5rem;border-bottom:1px solid var(--borde)}.actividad:last-child{border-bottom:none}.actividad-numero{font-weight:700;color:var(--link)}.boton{display:inline-block;background:var(--acento);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:6px;text-decoration:none;font-weight:600;font:inherit;margin:1rem 0;cursor:pointer}.boton:hover{opacity:.9}.boton-secundario{background:transparent;color:var(--link);border:1px solid var(--link)}.boton-peligro{background:transparent;color:var(--error);border:1px solid var(--error)}.lista-limpia{list-style:none;padding:0;margin:0}.lista-limpia li{padding:.6rem 0;border-bottom:1px solid var(--borde)}.lista-limpia a{text-decoration:none;display:block}.navegacion{display:flex;justify-content:space-between;gap:1rem;margin:2rem 0;font-size:.9rem}.navegacion a{flex:1 1;display:block;box-sizing:border-box;padding:.85rem 1.1rem;border:1px solid var(--link);border-radius:6px;color:var(--link);text-decoration:none;font-weight:600;text-align:center}.candado{color:var(--secundario);font-size:.85rem}details.solucion{border:1px solid var(--borde);border-radius:6px;margin:1rem 0;padding:.85rem 1rem}details.solucion summary{cursor:pointer;font-weight:600}details.solucion[open] summary{margin-bottom:.75rem}.paso-oculto{display:none}.pasos-controles{display:flex;align-items:center;flex-wrap:wrap;gap:1rem;margin:.75rem 0 .25rem}.boton-paso{margin:0;padding:.5rem 1rem;font-size:.9rem}.filtros{display:flex;gap:.75rem;flex-wrap:wrap;margin:1rem 0;font-size:.9rem}.aviso{background:var(--fondo-suave);padding:.85rem 1rem;border-radius:6px;font-size:.9rem;margin:1.5rem 0}.aclaracion,.aviso{color:var(--secundario)}.aclaracion{font-size:.88rem;margin:.5rem 0 1.25rem}.inciso{color:var(--link);font-weight:700;font-size:1.05rem;margin:1.25rem 0 .5rem}.inciso:first-child{margin-top:0}.consignas-integrador{list-style:none;padding:0;margin:.75rem 0 0}.consignas-integrador li{margin:.6rem 0}.consigna-letra{font-weight:700;color:var(--link);margin-right:.4rem}.link-reportar{background:none;border:none;color:var(--secundario);font-size:.85rem;cursor:pointer;padding:0;text-decoration:underline}.link-reportar:hover{color:var(--texto)}.pie-reportar{margin-top:2.5rem;padding-top:1.25rem;border-top:1px solid var(--borde)}.modal-fondo{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;padding:1rem;z-index:100}.modal{background:var(--fondo);border-radius:8px;padding:1.5rem;max-width:480px;width:100%;max-height:90vh;overflow-y:auto;position:relative}.modal-cerrar{position:absolute;top:.75rem;right:.75rem;background:none;border:none;font-size:1.5rem;line-height:1;cursor:pointer;color:var(--secundario)}.boton-hoja-formulas{margin:.5rem 0 0;padding:.5rem 1rem;font-size:.9rem}.hoja-formulas-fondo{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:100;display:flex;justify-content:flex-end}.hoja-formulas-panel{background:var(--fondo);width:100%;max-width:420px;height:100%;overflow-y:auto;padding:1.25rem;box-sizing:border-box}.hoja-formulas-cabecera{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem}.hoja-formulas-cabecera .modal-cerrar{position:static}.hoja-formulas-lista li{padding:.85rem 0;border-bottom:1px solid var(--borde)}.hoja-formulas-formula{margin-top:.4rem;font-size:.95rem;overflow-x:auto;max-width:100%}@media (max-width:640px){.hoja-formulas-fondo{align-items:flex-end}.hoja-formulas-panel{max-width:100%;height:auto;max-height:80vh;border-radius:12px 12px 0 0}}.reporte-contexto{color:var(--secundario);font-size:.85rem;margin-top:0}.campo{margin:1rem 0}.campo label{display:block;font-weight:600;font-size:.9rem;margin-bottom:.35rem}.campo input,.campo textarea{width:100%;padding:.6rem;border:1px solid var(--borde);border-radius:6px;font:inherit;background:var(--tarjeta);color:var(--texto)}.campo-ayuda{color:var(--secundario);font-size:.8rem;margin:.35rem 0 0}.campo-error{color:var(--error);font-size:.9rem}.campo-checkbox{display:flex;align-items:center;gap:.5rem;margin:1rem 0;font-size:.9rem;font-weight:400;cursor:pointer}.campo-checkbox input{width:1rem;height:1rem;accent-color:var(--acento);cursor:pointer}.tarjeta-auth{max-width:360px;margin:1.5rem 0}.boton-google{display:flex;align-items:center;justify-content:center;gap:.6rem;width:100%;padding:.85rem 1.25rem;border:1px solid var(--borde);border-radius:6px;background:var(--tarjeta);color:var(--texto);font:inherit;font-weight:600;font-size:1rem;cursor:pointer}.boton-google:hover{background:var(--fondo-suave)}.boton-google:disabled{opacity:.6;cursor:default}.separador-auth{display:flex;align-items:center;gap:.75rem;margin:1.25rem 0;color:var(--secundario);font-size:.85rem}.separador-auth:after,.separador-auth:before{content:"";flex:1 1;height:1px;background:var(--borde)}.acciones-auth{display:flex;flex-direction:column;gap:.4rem;margin-top:1.25rem}.acciones-auth button{background:none;border:none;color:var(--link);font-size:.85rem;text-align:left;cursor:pointer;padding:0}.item-subtema{display:flex;align-items:center;justify-content:space-between;gap:.75rem}.progreso-subtema{display:flex;align-items:center;gap:.5rem;flex-shrink:0;font-size:.8rem;color:var(--secundario)}.marca-leida{color:var(--link);font-weight:700}.marca-ejercicios{background:var(--fondo-suave);border-radius:999px;padding:.15rem .55rem}.lista-volumenes{display:flex;flex-direction:column;gap:1rem;margin:1.5rem 0}.bloque-volumen{border:1px solid var(--borde);border-radius:6px;overflow:hidden}.bloque-volumen-principal{display:flex;align-items:center;gap:1.25rem;padding:1.25rem;text-decoration:none;color:var(--texto)}.bloque-volumen-numero{font-family:var(--font-serif),Georgia,serif;font-size:2rem;font-weight:600;color:var(--acento);flex-shrink:0;line-height:1}.bloque-volumen-info{display:flex;flex-direction:column;gap:.35rem;flex:1 1;min-width:0}.bloque-volumen-titulo{font-family:var(--font-serif),Georgia,serif;font-size:1.15rem;font-weight:600}.barra-progreso{display:block;height:6px;border-radius:3px;background:var(--barra-fondo);overflow:hidden;margin-top:.25rem}.barra-progreso-relleno{display:block;height:100%;background:var(--acento)}a.item-progreso{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:var(--link)}.item-progreso .barra-progreso{flex:1 1;margin-top:0}.progreso-numero{flex-shrink:0;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--secundario);font-size:.9rem}.acciones-cuenta{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}.acciones-cuenta .boton{margin:0}.link-integradores{margin:1.5rem 0;padding:1rem 1.25rem;border:1px solid var(--borde);border-radius:6px;background:var(--fondo-suave)}.link-integradores a{font-weight:600}.bloque-volumen-integradores{display:block;padding:.75rem 1.25rem;border-top:1px solid var(--borde);font-size:.9rem;color:var(--link);text-decoration:none;background:var(--fondo-suave)}.actividad-pie{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-top:.5rem}.check-ejercicio{display:flex;align-items:center;gap:.4rem;font-size:.82rem;color:var(--secundario);cursor:pointer}.check-ejercicio input{width:.95rem;height:.95rem;accent-color:var(--acento);cursor:pointer}.boton-leida{background:transparent;border:1px solid var(--borde);color:var(--texto);padding:.6rem 1.1rem;border-radius:6px;font:inherit;font-size:.9rem;cursor:pointer}.boton-leida[aria-pressed=true]{background:var(--fondo-suave);border-color:var(--link);color:var(--link);font-weight:600}.acciones-plan{display:flex;gap:1rem;margin:.75rem 0;font-size:.85rem}.acciones-plan button{background:none;border:none;color:var(--link);cursor:pointer;padding:0;font-size:inherit}.plan-unidad{border:1px solid var(--borde);border-radius:6px;margin:.75rem 0;padding:.85rem 1rem}.plan-unidad summary{font-weight:600;justify-content:space-between;gap:.6rem}.plan-check-unidad,.plan-unidad summary{cursor:pointer;display:flex;align-items:center}.plan-check-unidad{margin:0}.plan-unidad-titulo{flex:1 1}.plan-unidad-etiqueta{display:flex;align-items:center;gap:.25rem;flex-shrink:0;font-size:.85rem;font-weight:400;color:var(--secundario)}.plan-unidad-etiqueta .etiqueta-abierta,.plan-unidad[open] .plan-unidad-etiqueta .etiqueta-cerrada{display:none}.plan-unidad[open] .plan-unidad-etiqueta .etiqueta-abierta{display:inline}.plan-unidad-flecha{font-size:1.1rem;line-height:1;transition:transform .15s ease}.plan-unidad[open]>summary .plan-unidad-flecha{transform:rotate(90deg)}.check-unidad{width:1.05rem;height:1.05rem;accent-color:var(--acento);cursor:pointer;flex-shrink:0}.plan-unidad[open] summary{margin-bottom:.5rem}.plan-item{display:flex;align-items:center;gap:.6rem;cursor:pointer}.plan-item input{width:1rem;height:1rem;accent-color:var(--acento);cursor:pointer}.bloque-plan{background:var(--fondo-suave);border-radius:6px;padding:1rem 1.25rem;margin:1.5rem 0}.bloque-hoy{border-left:3px solid var(--acento)}.plan-encabezado{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem}.plan-encabezado .boton{margin-top:0;flex-shrink:0}.plan-resumen{margin:0}.volver-al-plan{margin:1.5rem 0 0}.volver-al-plan a{font-size:.9rem}.candado-bloque{background:var(--fondo-suave);border-radius:6px;padding:1.25rem 1.5rem;margin:1.5rem 0}.candado-bloque p{margin-top:0}.pendiente{background:var(--fondo-suave);border:1px solid var(--ocre);border-radius:6px;padding:.85rem 1rem;margin:1.25rem 0;font-size:.9rem}.planes-suscripcion{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-template-rows:repeat(6,auto);grid-gap:1rem;gap:1rem;margin:1.5rem 0}.plan-suscripcion{display:grid;grid-row:span 6;grid-template-rows:subgrid;border:1px solid var(--borde);border-radius:8px;padding:1.25rem;text-align:center}.plan-suscripcion.plan-destacado{border:2px solid var(--acento)}.plan-etiqueta-fila{display:flex;align-items:center;justify-content:center}.plan-etiqueta{display:inline-block;background:var(--acento);color:#fff;font-size:.7rem;font-weight:600;padding:.2rem .6rem;border-radius:999px}.plan-etiqueta-neutra{background:var(--fondo-suave);color:var(--texto)}.plan-suscripcion h3{align-self:end;margin:0 0 .5rem}.plan-precio{align-self:end;font-size:1.4rem;font-weight:700;color:var(--acento);margin:0}.plan-periodo{align-self:start;font-size:.8rem;font-weight:400;color:var(--secundario);margin:0 0 1rem}.plan-descuento-fila{display:flex;align-items:center;justify-content:center}.plan-descuento{font-size:.8rem;font-weight:400;color:var(--secundario);margin:0}.plan-suscripcion .boton{align-self:end}.confirmacion-critica{background:var(--fondo-suave);border:1px solid var(--ocre);border-radius:6px;padding:1rem 1.25rem;margin:.75rem 0}.confirmacion-critica p{margin-top:0}.confirmacion-critica button{margin-right:.75rem}.pagina-teoria{font-family:var(--font-serif),Georgia,"Times New Roman",serif}.pagina-teoria .migas{font-family:var(--font-sans),sans-serif;font-size:12px;color:var(--tenue);clear:both}.pagina-teoria .migas-separador{color:var(--tenue)}.pagina-teoria h1{font-family:var(--font-serif),Georgia,serif;font-weight:600;font-size:2.1rem;margin:.5rem 0 1.25rem}.pagina-teoria .prosa{font-size:16px;line-height:1.7}.pagina-teoria .formula{background:none;border:none;border-top:1px solid var(--borde);border-bottom:1px solid var(--borde);padding:1.5rem 0;margin:1.75rem 0;text-align:center;overflow-x:auto}.pagina-teoria .formula .katex{font-size:.95em}.pagina-teoria .formula-texto{font-style:italic;font-size:1.15em}.pagina-teoria .etiqueta-seccion{font-family:var(--font-sans),sans-serif;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--tenue);margin:0 0 .6rem}.pagina-teoria .bloque{background:none;border:none;border-top:1px solid var(--borde);border-radius:0;padding:1.5rem 0 0;margin:1.75rem 0 0}.pagina-teoria .bloque.error-tipico{border:none;border-left:2px solid var(--ocre);border-radius:0;padding:.25rem 0 .25rem 1.25rem;margin:1.75rem 0}.pagina-teoria .grafico{text-align:center;margin:2rem 0}.pagina-teoria .grafico img,.pagina-teoria .grafico svg{margin:0 auto}.pagina-teoria .ejemplo{border:none;border-top:1px solid var(--borde);border-radius:0;padding:1.5rem 0 0;margin:1.75rem 0 0}.pagina-teoria .ejemplo-enunciado{font-weight:600}@media (max-width:640px){.pagina-teoria .boton{display:block;width:100%;text-align:center}}.pagina-teoria .navegacion{border-top:1px solid var(--borde);padding-top:1.5rem}.pagina-teoria .navegacion,.pagina-teoria .pie-reportar{font-family:var(--font-sans),sans-serif}.pagina-teoria .campo-ayuda{color:var(--tenue)}.pagina-teoria h2{font-family:var(--font-serif),Georgia,serif}.anuncio-fila{display:flex;justify-content:center}.anuncio-arriba{margin:1.5rem 0 2rem}.anuncio-final{margin:3rem 0 2.5rem}.anuncio-final-mobile{display:flex;justify-content:center}.anuncio-final-desktop{display:none}@media (min-width:641px){.anuncio-final-desktop{display:flex;justify-content:center}.anuncio-final-mobile{display:none}}.anuncio-entre-ejercicios,.anuncio-lateral,.anuncio-lateral-chico,.anuncio-lateral-grande{display:none}@media (max-width:640px){.anuncio-entre-ejercicios{display:flex;justify-content:center;margin:2rem 0}}@media (min-width:880px){.con-anuncios .contenido-central{max-width:840px;margin-left:-60px;margin-right:-60px}}@media (min-width:1080px) and (max-width:1359px){.anuncio-lateral{display:block;position:fixed;top:6.5rem;width:160px}.anuncio-lateral-chico{display:block}.anuncio-lateral-izq{left:10px}.anuncio-lateral-der{right:10px}.con-anuncios .contenido-central{--ancho-anuncios:clamp(700px,calc(100vw - 380px),900px);width:var(--ancho-anuncios);max-width:var(--ancho-anuncios);margin-left:calc((720px - var(--ancho-anuncios)) / 2);margin-right:calc((720px - var(--ancho-anuncios)) / 2)}}@media (min-width:1360px){.anuncio-lateral{display:block;position:fixed;top:6.5rem;width:300px}.anuncio-lateral-grande{display:block}.anuncio-lateral-izq{left:10px}.anuncio-lateral-der{right:10px}.con-anuncios .contenido-central{--ancho-anuncios:clamp(700px,calc(100vw - 660px),900px);width:var(--ancho-anuncios);max-width:var(--ancho-anuncios);margin-left:calc((720px - var(--ancho-anuncios)) / 2);margin-right:calc((720px - var(--ancho-anuncios)) / 2)}}