.solo-lector{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.videos{display:flex;gap:14px;margin:0;padding:4px 16px 12px;list-style:none;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding-inline:16px;overscroll-behavior-x:contain}.videos-flechas{display:none}@media(hover:hover)and (pointer:fine){.videos-flechas{display:flex;justify-content:flex-end;gap:8px;margin:-52px 0 12px}}.videos-flecha{width:44px;height:44px;border:1.5px solid var(--oro);border-radius:50%;background:transparent;color:var(--oro);font-size:24px;line-height:1;cursor:pointer}.videos-flecha:hover,.videos-flecha:focus-visible{background:var(--oro);color:var(--marino)}.video{flex:0 0 min(58vw,220px);scroll-snap-align:start;display:flex;flex-direction:column;gap:6px}.video-marco{position:relative;aspect-ratio:9 / 16;border-radius:14px;overflow:hidden;background:#0f1830;border:1.5px solid rgba(201,164,76,.6)}.video-marco video,.video-marco iframe,.video-portada img{display:block;width:100%;height:100%;border:0;object-fit:cover}.video-portada{display:block;width:100%;height:100%;padding:0;border:0;background:none;cursor:pointer}.video-play{position:absolute;left:50%;bottom:9%;width:56px;height:56px;margin-left:-28px;display:flex;align-items:center;justify-content:center;padding-left:4px;border-radius:50%;background:#1c2b4ad1;border:2px solid var(--oro);color:var(--oro);font-size:22px}.video-portada:hover .video-play,.video-portada:focus-visible .video-play{background:var(--oro);color:var(--marino)}.video-portada:focus-visible{outline:3px solid var(--oro-claro);outline-offset:-3px}.video-etiqueta{margin:0;font-size:14px;font-weight:600;color:var(--crema)}.video-comentar{align-self:flex-start;display:inline-flex;align-items:center;min-height:44px;margin-top:-10px;font-size:14px;color:var(--oro-claro)}.retos{display:flex;flex-direction:column;gap:12px;margin:0;padding:0;list-style:none}.reto{background:var(--crema);color:var(--marino);border-left:5px solid var(--oro);border-radius:12px}.reto-cabecera{display:flex;align-items:flex-start;gap:12px;width:100%;min-height:44px;padding:14px 16px;border:0;background:none;color:inherit;font:inherit;text-align:left;cursor:pointer}.reto-cabecera:focus-visible{outline:3px solid var(--marino);outline-offset:-3px;border-radius:12px}.reto-numero{flex:none;font-variant-numeric:lining-nums;font-family:var(--fuente-titulos);font-size:20px;line-height:1.2;color:#7a5f1f}.reto-enunciado{flex:1;font-size:16px}.reto-estado{flex:none;font-weight:700;font-size:18px;line-height:1.3}.reto-estado-ok{color:#2e6b31}.reto-estado-abrir{color:#7a5f1f}.reto-cuerpo{display:flex;flex-direction:column;gap:12px;padding:0 12px 14px}.reto-pista-boton{align-self:flex-start;min-height:44px;padding:8px 16px;border:1.5px solid #7a5f1f;border-radius:999px;background:transparent;color:#5c4716;font:inherit;font-weight:600;cursor:pointer}.reto-pista-boton:focus-visible{outline:3px solid var(--marino);outline-offset:2px}.reto-pista{margin:0;padding:10px 14px;border-radius:10px;background:#fff;border:1px solid var(--linea)}.reto-veredicto{scroll-margin:calc(var(--alto-barra) + 16px) 0;margin:0;padding:12px 14px;border-radius:10px;font-weight:700;background:#fbeaea;color:#8a1f1f;border:1.5px solid #e2b4b4}.reto-veredicto-ok{background:#e7f3e5;color:#1f5a22;border-color:#a9d3a4}.progreso-resumen{margin:0 0 14px;color:var(--oro-claro);font-weight:600}.progreso-lista{display:flex;flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;counter-reset:concepto}.progreso-lista a{display:flex;align-items:center;gap:12px;min-height:56px;padding:12px 16px;border-radius:12px;background:var(--crema);color:var(--marino);text-decoration:none;border-left:5px solid var(--linea)}.progreso-lista a:hover{border-left-color:var(--oro)}.progreso-lista a:focus-visible{outline:3px solid var(--oro-claro);outline-offset:2px}.progreso-lista .completo a{border-left-color:var(--oro)}.progreso-orden{flex:none;width:28px;font-variant-numeric:lining-nums;font-family:var(--fuente-titulos);font-size:20px;color:#7a5f1f}.progreso-titulo{flex:1;font-weight:600}.progreso-cuenta{flex:none;font-size:14px;font-variant-numeric:tabular-nums;color:#5e5238}@media(min-width:900px){.progreso-lista{display:grid;grid-template-columns:1fr 1fr}}.completo .progreso-cuenta{color:#2e6b31;font-weight:700}.aprende{max-width:820px;margin:0 auto;padding:24px 16px 48px}.aprende h1{margin:0 0 12px;font-family:var(--fuente-titulos);font-weight:400;font-size:clamp(30px,7vw,44px);line-height:1.15}.aprende h2{margin:0;font-family:var(--fuente-titulos);font-weight:400;font-size:26px;color:var(--oro)}.aprende-cabecera{margin-bottom:20px}.aprende-antetitulo{margin:0 0 4px;font-size:14px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--oro)}.aprende-entradilla{margin:0;max-width:60ch;font-size:17px}.tarjeta-caso{display:flex;align-items:center;gap:14px;margin-top:28px;padding:18px;border:2px solid var(--oro);border-radius:14px;text-decoration:none;color:var(--crema);background:#c9a44c14}.tarjeta-caso:hover{background:#c9a44c2e}.tarjeta-caso-icono{font-size:30px}.tarjeta-caso-titulo{display:block;font-family:var(--fuente-titulos);font-size:20px}.tarjeta-caso-nota{display:block;font-size:14px;color:var(--oro-claro)}.tarjeta-caso-flecha{margin-left:auto;font-size:28px;color:var(--oro)}.concepto-migas{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;font-size:15px;color:var(--oro-claro)}.concepto-migas a{display:inline-flex;align-items:center;min-height:44px;color:var(--oro-claro);font-weight:600;text-decoration:none}.concepto-migas a:hover{text-decoration:underline}.concepto-explicacion p{margin:0 0 10px;font-size:17px;max-width:62ch}.sintaxis{margin:16px 0 0!important;padding:16px 18px;border:1.5px solid rgba(201,164,76,.55);border-left:6px solid var(--oro);border-radius:12px;background:#ffffff0a;overflow-x:auto}.sintaxis code{font-size:18px;color:var(--crema);white-space:pre}.sintaxis b{color:var(--oro);font-weight:700}.sintaxis i{color:var(--oro-claro);font-style:italic}.concepto-seccion{margin-top:36px}.concepto-seccion>h2{margin-bottom:12px}.concepto-videos .videos{margin:0 -16px}.concepto-retos-cabecera{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px}.concepto-nota{margin:0 0 14px;font-size:15px;color:var(--oro-claro)}.concepto-vecinos{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:40px}.vecino{display:flex;flex-direction:column;gap:2px;min-height:64px;padding:12px 14px;border:1.5px solid var(--oro);border-radius:12px;text-decoration:none;color:var(--crema)}.vecino:hover{background:#c9a44c26}.vecino-siguiente{text-align:right}.vecino-rotulo{font-size:13px;font-weight:600;color:var(--oro)}.vecino-titulo{font-size:15px}@media(min-width:900px){.aprende{padding-top:40px}.concepto-videos .videos{margin:0;padding-inline:0;scroll-padding-inline:0}.concepto-videos .video{flex-basis:200px}}