/* ============================================================================
   v2 — PUERTA / PORTAL
   Concepto: la doble audiencia hecha umbral. El motivo del marco cuadrado de
   esquinas abiertas del logo se vuelve portal alrededor del hero. Dos jambas
   etiquetadas, "Finanzas" e "IA", enmarcan un interior unificado. La caída es
   el visitante atravesando el portal. Cada sección es una "sala" sucesiva.
   Arquitectónico, elegante, mucho negro.
   ========================================================================== */

.stage { isolation: isolate; }
.wrap { width: 100%; max-width: var(--lff-maxw); margin-inline: auto; padding-inline: var(--lff-gutter); }

/* ---- Velo de la puerta (las dos hojas que se abren) --------------------- */
/* lff.js crea .lff-veil; nuestra caída le añade .portal-veil y el contenido. */
/* Las hojas negras son la única cubierta; el velo en sí es transparente para
   que, al abrirse las puertas, el contenido detrás quede a la vista. */
.portal-veil { display: block; overflow: hidden; z-index: 9999; background: transparent; }
.portal-leaf {
  position: absolute; top: 0; bottom: 0; width: 50.5%;
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(75,168,232,0.06), transparent 60%),
    var(--lff-black);
  display: flex; align-items: center; will-change: transform;
}
.portal-leaf--l { left: 0; justify-content: flex-end; }
.portal-leaf--r { right: 0; justify-content: flex-start; }
.portal-leaf__edge {
  position: absolute; top: 0; bottom: 0; width: 1px;
  background: linear-gradient(180deg, transparent, rgba(75,168,232,0.5), transparent);
}
.portal-leaf--l .portal-leaf__edge { right: 0; }
.portal-leaf--r .portal-leaf__edge { left: 0; }
.portal-leaf__label {
  font-family: var(--lff-font-mono); font-size: clamp(0.8rem, 1.6vw, 1.05rem);
  letter-spacing: 0.4em; text-transform: uppercase; color: var(--lff-text-soft);
  padding-inline: clamp(1.4rem, 4vw, 3.2rem); writing-mode: horizontal-tb;
}
.portal-seam {
  position: absolute; top: 12%; bottom: 12%; left: 50%; width: 2px;
  transform: translateX(-50%); transform-origin: center;
  background: var(--lff-grad); box-shadow: 0 0 30px 3px rgba(75,168,232,0.6);
}
/* "+" central: con las dos etiquetas, el cerrado lee "Finanzas + IA". */
.portal-plus {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  z-index: 2; pointer-events: none; line-height: 1;
  font-family: var(--lff-font-mono); font-weight: 500;
  font-size: clamp(1.05rem, 2.6vw, 1.7rem);
  background: var(--lff-grad-diag); -webkit-background-clip: text; background-clip: text;
  color: transparent; will-change: transform, opacity;
}

/* ---- La línea de la puerta se transforma en el recuadro del hero -------- */
/* Raíl brillante que viaja del centro a cada lado exacto del marco. */
.portal-rail {
  position: absolute; width: 2px; z-index: 3; pointer-events: none;
  background: var(--lff-grad); box-shadow: 0 0 16px rgba(75, 168, 232, 0.55);
  will-change: transform, opacity;
}
/* El recuadro real y el contenido esperan ocultos hasta que la línea llega. */
.portal__jamb { transition: opacity 620ms var(--lff-ease); }
.portal__jamb-text { transition: opacity 520ms var(--lff-ease); }
.portal__corner { transition: opacity 600ms var(--lff-ease), transform 700ms cubic-bezier(.22, 1, .36, 1); }
.portal__corner--tl { transform-origin: top left; }
.portal__corner--br { transform-origin: bottom right; }
.hero__scroll { transition: opacity 600ms var(--lff-ease); }
.portal-forming .portal__jamb,
.portal-forming .portal__jamb-text,
.portal-forming .portal__inner,
.portal-forming .nav,
.portal-forming .hero__scroll { opacity: 0; }
.portal-forming .portal__corner { opacity: 0; transform: scale(0.4); }

/* ---- Navegación --------------------------------------------------------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem var(--lff-gutter);
  transition: background var(--lff-dur-mid) var(--lff-ease), border-color var(--lff-dur-mid) var(--lff-ease), backdrop-filter var(--lff-dur-mid) var(--lff-ease), opacity var(--lff-dur-mid) var(--lff-ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled { background: rgba(4,6,10,0.74); backdrop-filter: blur(16px); border-bottom-color: var(--lff-line); }
.nav__brand { display: flex; align-items: center; gap: 0.7rem; }
.nav__mono { width: 30px; }
.nav__name { font-family: var(--lff-font-display); font-weight: 500; letter-spacing: 0.14em; font-size: 0.82rem; text-transform: uppercase; color: var(--lff-text-soft); }
.nav__links { display: flex; align-items: center; gap: 1.8rem; }
.nav__links > a:not(.btn) { font-size: 0.9rem; color: var(--lff-text-soft); transition: color var(--lff-dur-fast); }
.nav__links > a:not(.btn):hover { color: var(--lff-text); }
@media (max-width: 860px) { .nav__name, .nav__links > a:not(.btn) { display: none; } }

/* ---- Botones ------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5em;
  font-family: var(--lff-font-display); font-weight: 500; font-size: 0.96rem;
  letter-spacing: 0.01em; padding: 0.9em 1.6em; border-radius: 4px;
  border: 1px solid transparent; transition: transform var(--lff-dur-fast) var(--lff-ease), box-shadow var(--lff-dur-fast) var(--lff-ease), border-color var(--lff-dur-fast);
}
.btn--sm { padding: 0.6em 1.1em; font-size: 0.82rem; }
.btn--primary { color: #04130f; background: var(--lff-grad-diag); box-shadow: 0 14px 38px -16px rgba(63,216,200,0.6); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 22px 50px -18px rgba(75,168,232,0.78); }
.btn--ghost { color: var(--lff-text); border-color: var(--lff-line-strong); }
.btn--ghost:hover { border-color: var(--lff-text-soft); transform: translateY(-2px); }
.btn--block { width: 100%; }
.btn:active { transform: translateY(0); }

/* ============================================================================
   HERO — EL PORTAL
   ========================================================================== */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: 6rem var(--lff-gutter) 3.4rem; overflow: hidden;
}

/* ---- Curva de equity decorativa (fondo del hero) ----------------------- */
.hero__chart {
  position: absolute; left: 0; right: 0; bottom: 0; height: 66%;
  z-index: 1; pointer-events: none; opacity: 0.6;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 11%, #000 89%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 11%, #000 89%, transparent);
}
.hero__chart .equity-svg { width: 100%; height: 100%; display: block; }
.eq-grid { stroke: rgba(255, 255, 255, 0.06); stroke-width: 1; }
.eq-grid--top { stroke: rgba(255, 255, 255, 0.1); }
.equity-line { fill: none; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.hero__chart .equity-line { transition: stroke-dashoffset 2.4s cubic-bezier(.16, 1, .3, 1); }
.equity-fill { opacity: 0; transition: opacity 1.4s ease 0.4s; }
.hero__chart.is-drawn .equity-fill { opacity: 1; }
.eq-candle { opacity: 0; transition: opacity 0.45s ease; }
.eq-dot, .eq-dot-ring { opacity: 0; transform-box: fill-box; transform-origin: center; transition: opacity 0.5s ease 2.1s; }
.hero__chart.is-drawn .eq-dot { opacity: 1; }
.hero__chart.is-drawn .eq-dot-ring { opacity: 1; animation: eqPulse 2.6s ease-out infinite 2.6s; }
@keyframes eqPulse {
  0% { transform: scale(1); opacity: 0.5; }
  70% { transform: scale(2.5); opacity: 0; }
  100% { transform: scale(2.5); opacity: 0; }
}
.eq-labels {
  position: absolute; left: 0; right: 0; bottom: 0.4rem; display: flex; justify-content: space-between;
  padding-inline: 4.5%; font-family: var(--lff-font-mono); font-size: 0.56rem;
  letter-spacing: 0.22em; color: var(--lff-text-faint);
}
.eq-chip {
  position: absolute; top: 7%; right: 9%; opacity: 0; transition: opacity 0.6s ease;
  font-family: var(--lff-font-mono); font-size: 0.56rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--lff-cyan); border: 1px solid rgba(95, 234, 212, 0.3); border-radius: 999px;
  padding: 0.25em 0.7em; background: rgba(5, 7, 10, 0.5); backdrop-filter: blur(4px);
}
.hero__chart.is-drawn .eq-chip { opacity: 0.85; }
/* La pista de scroll va por encima de la curva */
.hero__scroll { z-index: 3; }
/* Scrim radial detrás del texto del portal para legibilidad sobre la curva */
.portal::before {
  content: ""; position: absolute; inset: -14% -16%; z-index: -1; pointer-events: none;
  background: radial-gradient(58% 60% at 50% 52%, rgba(4, 6, 10, 0.86), rgba(4, 6, 10, 0.4) 60%, transparent 78%);
}
@media (prefers-reduced-motion: reduce) {
  .hero__chart .equity-line { transition: none; }
  .hero__chart.is-drawn .eq-dot-ring { animation: none; }
}

/* ---- Sala 03: programa en dos días (hereda la estética de las salas) --- */
.dias { display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem; margin-top: 2.8rem; }
.dia {
  position: relative; display: flex; flex-direction: column;
  padding: 2.2rem 2rem 2rem; border: 1px solid var(--lff-line); border-radius: 8px;
  background: linear-gradient(180deg, var(--lff-surface-2), var(--lff-surface-1));
  transition: border-color var(--lff-dur-mid), transform var(--lff-dur-mid);
}
.dia:hover { border-color: var(--lff-line-strong); transform: translateY(-4px); }
/* Esquina abierta: eco del marco del logo, igual que en .aud__card */
.dia::before {
  content: ""; position: absolute; top: 1.1rem; left: 1.1rem; width: 20px; height: 20px;
  border-top: 2px solid; border-left: 2px solid; border-image: var(--lff-grad-diag) 1; opacity: 0.85;
}
.dia__etq { font-family: var(--lff-font-mono); font-size: 0.64rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--lff-text-muted); }
.dia__fecha { font-family: var(--lff-font-display); font-weight: 500; font-size: clamp(1.5rem, 3vw, 2.05rem); letter-spacing: var(--lff-tracking-tight); margin-top: 0.2rem; }
.dia__sub { font-family: var(--lff-font-display); font-weight: 500; font-size: 1.08rem; color: var(--lff-cyan); margin-top: 0.45rem; }
.dia__transf {
  font-size: 1.04rem; line-height: 1.5; color: var(--lff-text); margin: 1.2rem 0 1.5rem;
  padding-left: 0.95rem; border-left: 2px solid; border-image: var(--lff-grad) 1;
}
.dia__caps { list-style: none; display: grid; gap: 0.85rem; margin: 0; padding: 0; }
.dia__cap { display: grid; grid-template-columns: auto 1fr; gap: 0.7rem; align-items: start; }
.dia__cap-mk { width: 14px; height: 14px; margin-top: 0.28rem; border-radius: 4px; background: var(--lff-grad-soft); border: 1px solid rgba(91, 108, 240, 0.4); }
.dia__cap-tx { font-size: 0.95rem; line-height: 1.46; color: var(--lff-text-soft); }
.dia__cap-tx b { color: var(--lff-text); font-weight: 600; }
.dia__llevas { margin-top: auto; padding-top: 1.4rem; }
.dia__llevas-inner {
  display: flex; flex-wrap: wrap; gap: 0.4rem 0.8rem; align-items: baseline;
  padding: 1rem 1.1rem; border-radius: 6px; background: var(--lff-grad-soft); border: 1px solid rgba(91, 108, 240, 0.35);
}
.dia__llevas-lbl { font-family: var(--lff-font-mono); font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--lff-cyan); }
.dia__llevas-txt { font-size: 0.92rem; color: var(--lff-text); line-height: 1.4; }
@media (max-width: 820px) { .dias { grid-template-columns: 1fr; } }

/* ---- Sala 05: refuerzos del precio ------------------------------------- */
.oferta__live { font-family: var(--lff-font-mono); font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--lff-cyan); margin-bottom: 1.2rem; }
.price__dates-mini { margin-top: 1rem; text-align: center; font-family: var(--lff-font-mono); font-size: 0.72rem; letter-spacing: 0.08em; color: var(--lff-text-muted); }
#checkout-btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; }

/* Scroll suave para los CTA ancla (brand.css lo desactiva en reduce-motion) */
html { scroll-behavior: smooth; }
/* Campo de fondo: rejilla arquitectónica sutil + halo del umbral */
.hero__field {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(60% 50% at 50% 42%, rgba(75,168,232,0.16), transparent 70%),
    linear-gradient(0deg, var(--lff-bg) 0%, transparent 30%),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.022) 0 1px, transparent 1px 84px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.022) 0 1px, transparent 1px 84px);
  -webkit-mask-image: radial-gradient(75% 65% at 50% 45%, #000 30%, transparent 80%);
  mask-image: radial-gradient(75% 65% at 50% 45%, #000 30%, transparent 80%);
}

/* El marco-portal: dos esquinas abiertas (sup-izq / inf-der), como el logo */
.portal {
  position: relative; z-index: 2;
  width: min(960px, 100%);
  padding: clamp(2.2rem, 4.6vw, 3.6rem) clamp(1.6rem, 6vw, 5.5rem);
}
.portal__corner {
  position: absolute; width: clamp(56px, 9vw, 110px); height: clamp(56px, 9vw, 110px);
  pointer-events: none;
}
.portal__corner::before, .portal__corner::after {
  content: ""; position: absolute; background: var(--lff-grad-diag); border-radius: 1px;
}
.portal__corner::before { width: 100%; height: 2px; }
.portal__corner::after { width: 2px; height: 100%; }
.portal__corner--tl { top: 0; left: 0; }
.portal__corner--tl::before { top: 0; left: 0; }
.portal__corner--tl::after { top: 0; left: 0; }
.portal__corner--br { bottom: 0; right: 0; }
.portal__corner--br::before { bottom: 0; right: 0; }
.portal__corner--br::after { bottom: 0; right: 0; }

/* Jambas: los lados verticales del marco, etiquetados con las dos puertas */
.portal__jamb {
  position: absolute; top: 0; bottom: 0; width: 1px;
  display: flex; align-items: center; gap: 0.9rem;
  background: linear-gradient(180deg, transparent, var(--lff-line-strong) 18%, var(--lff-line-strong) 82%, transparent);
}
.portal__jamb--l { left: 0; flex-direction: row; justify-content: flex-start; }
.portal__jamb--r { right: 0; flex-direction: row; justify-content: flex-end; }
.portal__jamb-text {
  font-family: var(--lff-font-mono); font-size: 0.66rem; letter-spacing: 0.34em;
  text-transform: uppercase; color: var(--lff-text-muted); white-space: nowrap;
  writing-mode: vertical-rl;
}
.portal__jamb--l .portal__jamb-text { transform: rotate(180deg); }
.portal__jamb-tick { width: 8px; height: 8px; border-radius: 50%; background: var(--lff-grad-diag); box-shadow: 0 0 12px rgba(63,216,200,0.7); flex: none; }

.portal__inner { position: relative; display: flex; flex-direction: column; align-items: center; }
.hero__kicker { margin-bottom: 1.4rem; }
.hero__mono { width: clamp(64px, 9vw, 92px); margin-bottom: 1.2rem; filter: drop-shadow(0 0 34px rgba(75,168,232,0.4)); }
.hero__wm { font-size: clamp(1.55rem, 4.4vw, 2.8rem); }
.hero__tag { font-family: var(--lff-font-mono); font-size: 0.76rem; letter-spacing: 0.4em; text-transform: uppercase; color: var(--lff-text-muted); margin-top: 0.9rem; }
.hero__headline {
  font-family: var(--lff-font-display); font-weight: 400;
  font-size: clamp(1.8rem, 4.2vw, 3.15rem); line-height: 1.1; letter-spacing: var(--lff-tracking-tight);
  margin-top: 1.8rem; max-width: 19ch; text-wrap: balance;
}
.hero__sub { color: var(--lff-text-soft); font-size: clamp(1rem, 1.5vw, 1.16rem); line-height: 1.5; margin-top: 1.1rem; max-width: 52ch; }
.hero__cta { display: flex; gap: 0.9rem; flex-wrap: wrap; justify-content: center; margin-top: 2rem; }

.hero__dates { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; margin-top: 1.5rem; }
.date-chip { display: inline-flex; flex-direction: column; gap: 0.18rem; padding: 0.65rem 1.3rem; border: 1px solid var(--lff-line); border-radius: 4px; background: rgba(13,18,27,0.6); backdrop-filter: blur(4px); }
.date-chip__label { font-family: var(--lff-font-mono); font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--lff-text-muted); }
.date-chip__date { font-family: var(--lff-font-display); font-size: 1rem; color: var(--lff-text); }
.hero__format { font-size: 0.82rem; color: var(--lff-text-muted); margin-top: 1.1rem; }
.hero__scroll {
  position: absolute; bottom: 1.6rem; left: 50%; transform: translateX(-50%);
  display: inline-flex; flex-direction: column; align-items: center; gap: 0.55rem;
  font-family: var(--lff-font-mono); font-size: 0.62rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--lff-text-muted);
}
.hero__scroll > span { width: 1px; height: 34px; background: linear-gradient(180deg, var(--lff-teal), transparent); }

/* ============================================================================
   SALAS (secciones sucesivas)
   ========================================================================== */
.sala { position: relative; padding-block: clamp(2.5rem, 5.5vw, 4.5rem); }
/* Dintel superior: una línea con esquinas que sugiere el umbral de cada sala */
.sala + .sala::before {
  content: ""; position: absolute; top: 0; left: var(--lff-gutter); right: var(--lff-gutter);
  height: 1px; background: var(--lff-line);
}
.sala__head { position: relative; max-width: 760px; }
.sala__head--row { display: flex; align-items: flex-end; justify-content: space-between; gap: 1.4rem; flex-wrap: wrap; max-width: var(--lff-maxw); }
.sala__num {
  display: inline-block; font-family: var(--lff-font-mono); font-size: 0.66rem;
  letter-spacing: 0.28em; text-transform: uppercase; color: var(--lff-text-faint);
  margin-bottom: 1.1rem;
}
.sala__title {
  font-family: var(--lff-font-display); font-weight: 400;
  font-size: clamp(1.7rem, 3.6vw, 2.7rem); letter-spacing: var(--lff-tracking-tight);
  line-height: 1.12; margin-top: 0.7rem; max-width: 22ch; text-wrap: balance;
}

/* ---- Sala 01: dos puertas ----------------------------------------------- */
.aud { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin-top: 3rem; }
.aud__card {
  position: relative; padding: 2.6rem 2.2rem; border: 1px solid var(--lff-line);
  border-radius: 6px; background: linear-gradient(180deg, var(--lff-surface-2), var(--lff-surface-1));
  overflow: hidden; transition: border-color var(--lff-dur-mid), transform var(--lff-dur-mid);
}
.aud__card:hover { border-color: var(--lff-line-strong); transform: translateY(-4px); }
/* esquina abierta en cada tarjeta: eco del marco del logo */
.aud__card::before { content: ""; position: absolute; top: 1.2rem; left: 1.2rem; width: 22px; height: 22px; border-top: 2px solid; border-left: 2px solid; border-image: var(--lff-grad-diag) 1; opacity: 0.85; }
.aud__door { font-family: var(--lff-font-mono); font-size: 0.62rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--lff-text-faint); }
.aud__tag { font-family: var(--lff-font-display); font-weight: 500; font-size: 1.15rem; letter-spacing: var(--lff-tracking-tight); color: var(--lff-cyan); margin-top: 1.6rem; }
.aud__line { font-size: 1.16rem; line-height: 1.5; margin-top: 0.8rem; color: var(--lff-text); }

/* ---- Sala 02: autores --------------------------------------------------- */
.autores__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin-top: 3rem; }
.author {
  position: relative; padding: 2.6rem 2.2rem; border: 1px solid var(--lff-line);
  border-radius: 6px; background: var(--lff-surface-1); overflow: hidden;
}
.author::after { content: ""; position: absolute; inset: auto 0 0 0; height: 2px; background: var(--lff-grad-diag); opacity: 0.6; }
.author__role { font-family: var(--lff-font-mono); font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--lff-text-muted); }
.author__name { font-family: var(--lff-font-display); font-weight: 500; font-size: 1.5rem; letter-spacing: var(--lff-tracking-tight); margin-top: 0.5rem; }
.author__bio { color: var(--lff-text-soft); margin-top: 0.9rem; line-height: 1.55; }
.author__proof { display: inline-flex; align-items: center; gap: 0.5em; margin-top: 1.4rem; font-family: var(--lff-font-mono); font-size: 0.8rem; color: var(--lff-text); }
.author__proof::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--lff-grad-diag); box-shadow: 0 0 10px rgba(63,216,200,0.8); }

/* ---- Sala 03: temario --------------------------------------------------- */
.temario__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin-top: 3rem; background: var(--lff-line); border: 1px solid var(--lff-line); border-radius: 6px; overflow: hidden; }
.modu { position: relative; display: grid; grid-template-columns: auto 1fr; gap: 1.3rem; padding: 2rem 1.9rem; background: var(--lff-surface-1); transition: background var(--lff-dur-mid); }
.modu:hover { background: var(--lff-surface-2); }
.modu__n { font-family: var(--lff-font-mono); font-size: 0.82rem; color: var(--lff-cyan); padding-top: 0.15rem; }
.modu__title { font-family: var(--lff-font-display); font-weight: 500; font-size: 1.18rem; letter-spacing: var(--lff-tracking-tight); }
.modu__desc { color: var(--lff-text-soft); margin-top: 0.4rem; line-height: 1.5; font-size: 0.96rem; }

/* ---- Sala 04: promesa --------------------------------------------------- */
.sala--promesa { text-align: center; }
.promesa__inner {
  position: relative; max-width: 880px; margin-inline: auto;
  display: flex; flex-direction: column; align-items: center; gap: 1.6rem;
  padding: clamp(2.6rem, 6vw, 4.2rem) clamp(1.6rem, 5vw, 4rem);
  border-radius: 8px; background: radial-gradient(120% 100% at 50% 0%, rgba(75,168,232,0.07), transparent 70%);
}
/* marco de dos esquinas abiertas alrededor de la promesa */
.promesa__inner::before, .promesa__inner::after { content: ""; position: absolute; width: 46px; height: 46px; }
.promesa__inner::before { top: 0; left: 0; border-top: 2px solid; border-left: 2px solid; border-image: var(--lff-grad-diag) 1; }
.promesa__inner::after { bottom: 0; right: 0; border-bottom: 2px solid; border-right: 2px solid; border-image: var(--lff-grad-diag) 1; }
.promesa__statement { font-family: var(--lff-font-display); font-weight: 400; font-size: clamp(1.5rem, 3.4vw, 2.4rem); line-height: 1.25; letter-spacing: var(--lff-tracking-tight); text-wrap: balance; }
.promesa__bullets { display: grid; gap: 0.8rem; text-align: left; max-width: 560px; width: 100%; }
.promesa__bullets li { display: grid; grid-template-columns: auto 1fr; gap: 0.8rem; color: var(--lff-text-soft); }
.promesa__bullets li::before { content: ""; width: 16px; height: 16px; margin-top: 0.28rem; border-top: 2px solid; border-left: 2px solid; border-image: var(--lff-grad-diag) 1; flex: none; }

/* ---- Sala 05: oferta ---------------------------------------------------- */
.sala--oferta { overflow: hidden; }
.oferta__glow { position: absolute; right: -8%; top: 30%; width: 540px; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, rgba(91,108,240,0.22), transparent 70%); filter: blur(20px); pointer-events: none; }
.oferta__inner { display: grid; grid-template-columns: 1fr 0.85fr; gap: 3rem; align-items: center; margin-top: 3rem; }
.oferta__dates { display: flex; gap: 1rem; flex-wrap: wrap; }
.oferta__seats { margin-top: 1.6rem; font-family: var(--lff-font-mono); font-size: 0.85rem; color: var(--lff-text-soft); }
.oferta__urgency { margin-top: 1.1rem; display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem; font-size: 0.88rem; color: var(--lff-text-muted); }
.price { position: relative; padding: 2.6rem 2.2rem; border-radius: 8px; background: linear-gradient(180deg, var(--lff-surface-2), var(--lff-surface-1)); border: 1px solid var(--lff-line-strong); box-shadow: 0 40px 80px -40px rgba(75,168,232,0.4); }
.price::before { content: ""; position: absolute; inset: 0; border-radius: 8px; padding: 1px; background: var(--lff-grad-diag); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0.55; pointer-events: none; }
.price__flag { margin-bottom: 1.2rem; }
.price__label { font-family: var(--lff-font-mono); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--lff-text-muted); }
.price__amount { font-family: var(--lff-font-display); font-weight: 500; font-size: clamp(2.6rem, 6vw, 3.6rem); letter-spacing: var(--lff-tracking-tight); margin: 0.3rem 0 0.2rem; display: flex; align-items: baseline; gap: 0.4rem; }
.price__cur { font-size: 0.4em; color: var(--lff-text-soft); }
.price__note { color: var(--lff-text-soft); font-size: 0.9rem; line-height: 1.5; margin-bottom: 1.6rem; }
.price__guarantee { margin-top: 1.1rem; font-size: 0.8rem; color: var(--lff-text-muted); text-align: center; }

/* ---- Sala 06: FAQ ------------------------------------------------------- */
.faq__list { margin-top: 2.8rem; border-top: 1px solid var(--lff-line); }
.faq__item { border-bottom: 1px solid var(--lff-line); }
.faq__q { width: 100%; text-align: left; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.5rem 0; font-family: var(--lff-font-display); font-weight: 500; font-size: 1.1rem; letter-spacing: var(--lff-tracking-tight); color: var(--lff-text); }
.faq__sign { position: relative; width: 16px; height: 16px; flex: none; }
.faq__sign::before, .faq__sign::after { content: ""; position: absolute; inset: 50% 0 auto 0; height: 1.5px; background: var(--lff-cyan); transition: transform var(--lff-dur-fast); }
.faq__sign::after { transform: rotate(90deg); }
.faq__item.is-open .faq__sign::after { transform: rotate(0); }
.faq__a { max-height: 0; overflow: hidden; transition: max-height var(--lff-dur-mid) var(--lff-ease); color: var(--lff-text-soft); }
.faq__a p { padding-bottom: 1.5rem; line-height: 1.6; max-width: 60ch; }

/* ---- Pie ---------------------------------------------------------------- */
.foot { border-top: 1px solid var(--lff-line); padding-block: 3rem; }
.foot__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.foot__brand { display: flex; align-items: center; gap: 0.7rem; font-family: var(--lff-font-display); letter-spacing: 0.1em; font-size: 0.9rem; color: var(--lff-text-soft); }
.foot__mono { width: 26px; }
.foot__meta { font-family: var(--lff-font-mono); font-size: 0.78rem; color: var(--lff-text-muted); letter-spacing: 0.06em; }

/* ---- Revelado al hacer scroll ------------------------------------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--lff-ease), transform 0.7s var(--lff-ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  .hero__scroll { display: none; }
}

/* ============================================================================
   RESPONSIVO
   ========================================================================== */
@media (max-width: 860px) {
  .aud, .autores__grid, .temario__grid, .oferta__inner { grid-template-columns: 1fr; }
  .oferta__inner { gap: 2rem; }
  .portal { padding-inline: clamp(1.8rem, 9vw, 3rem); }
}
@media (max-width: 560px) {
  .hero { padding-top: 6.5rem; }
  .portal { padding-block: 2.2rem; }
  .portal__jamb-text { font-size: 0.58rem; letter-spacing: 0.26em; }
  .portal-leaf__label { letter-spacing: 0.3em; }
  .sala__head--row { align-items: flex-start; }
}