/* ============================================================
   IMPERIO ALGORÍTMICO — PORTADA (www.imperioalgoritmico.com)
   ------------------------------------------------------------
   Paleta y tipografía heredadas de la identidad de marca
   (misma familia que styles.css: negro-granate, rojo coral,
   Poppins, kickers en mayúsculas con tracking ancho).
   Este archivo es independiente para no tocar las páginas
   del embudo que ya están en producción.
   ============================================================ */

:root {
  --negro:          #0d0304;
  --negro-2:        #140507;
  --granate:        #1c0709;
  --granate-claro:  #2a0b0e;
  --rojo:           #e84547;
  --rojo-coral:     #f2555a;
  --rojo-claro:     #ff8a8d;
  --rojo-profundo:  #5c1015;
  --borde:          rgba(232, 69, 71, .26);
  --borde-suave:    rgba(255, 255, 255, .08);
  --blanco:         #ffffff;
  --texto:          #e9dfe0;
  --texto-suave:    #b09b9e;

  --radio:    18px;
  --radio-s:  12px;
  --ancho:    1120px;

  --fuente: "Poppins", system-ui, -apple-system, "Segoe UI", sans-serif;
  --suave: cubic-bezier(.22, .61, .36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--fuente);
  background: var(--negro);
  color: var(--texto);
  line-height: 1.68;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

::selection { background: var(--rojo); color: #fff; }

.saltar {
  position: absolute;
  left: -9999px;
  top: 12px;
  background: var(--rojo);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  z-index: 999;
  font-weight: 600;
}
.saltar:focus { left: 16px; }

:focus-visible {
  outline: 2px solid var(--rojo-coral);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- estructura ---------- */

.caja {
  width: min(100% - 44px, var(--ancho));
  margin-inline: auto;
}
.caja-estrecha { width: min(100% - 44px, 820px); }

.seccion { padding: clamp(72px, 10vw, 116px) 0; }
.seccion-alt { background: var(--negro-2); }

.kicker {
  font-weight: 600;
  font-size: 12.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--rojo-coral);
  margin-bottom: 16px;
}

h1, h2, h3 {
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--blanco);
  text-wrap: balance;          /* corta los títulos por donde se leen mejor */
}

p { text-wrap: pretty; }        /* evita palabras huérfanas al final */

h2 {
  font-size: clamp(27px, 4.1vw, 42px);
  font-weight: 700;
}

.cabecera { max-width: 720px; margin-bottom: clamp(40px, 6vw, 60px); }
.cabecera-sub {
  margin-top: 18px;
  color: var(--texto-suave);
  font-size: 17px;
  max-width: 620px;
}

/* ---------- botones ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--rojo-coral), var(--rojo) 58%, #c9333a);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  border-radius: 999px;
  padding: 15px 30px;
  font-size: 16px;
  box-shadow: 0 12px 34px -12px rgba(232, 69, 71, .75);
  transition: transform .28s var(--suave), box-shadow .28s var(--suave), filter .28s var(--suave);
  white-space: nowrap;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 44px -12px rgba(232, 69, 71, .9);
  filter: saturate(1.08);
}
.btn:active { transform: translateY(0); }

.btn-grande { padding: 18px 40px; font-size: 17.5px; }
.btn-mini   { padding: 11px 22px; font-size: 14.5px; }

.btn-fantasma {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--texto);
  text-decoration: none;
  font-weight: 500;
  font-size: 16px;
  padding: 15px 8px;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--suave), border-color .25s var(--suave);
}
.btn-fantasma::after { content: "→"; transition: transform .25s var(--suave); }
.btn-fantasma:hover { color: var(--blanco); border-color: var(--borde); }
.btn-fantasma:hover::after { transform: translateX(4px); }

/* ---------- nav ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  padding: 18px 0;
  transition: padding .3s var(--suave), background .3s var(--suave), box-shadow .3s var(--suave), backdrop-filter .3s var(--suave);
}
.nav.compacta {
  padding: 9px 0;
  background: rgba(13, 3, 4, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--borde-suave);
}

.nav-caja {
  width: min(100% - 44px, var(--ancho));
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-marca img { height: 46px; width: auto; transition: height .3s var(--suave); }
.nav.compacta .nav-marca img { height: 38px; }

.nav-enlaces {
  margin-left: auto;
  display: flex;
  gap: 30px;
  font-size: 15px;
}
.nav-enlaces a {
  color: var(--texto-suave);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color .25s var(--suave);
}
.nav-enlaces a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -6px;
  height: 1.5px;
  background: var(--rojo);
  transition: right .3s var(--suave);
}
.nav-enlaces a:hover { color: var(--blanco); }
.nav-enlaces a:hover::after { right: 0; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 132px 0 84px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 120% 90% at 50% -12%, rgba(140, 25, 30, .42), transparent 62%),
    radial-gradient(ellipse 80% 60% at 88% 104%, rgba(92, 16, 21, .45), transparent 70%),
    var(--negro);
}

.textura {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 138, 141, .05) 1px, transparent 1px);
  background-size: 22px 22px;
  pointer-events: none;
}

.linea-diag {
  position: absolute;
  width: 1px;
  height: 140%;
  top: -20%;
  background: linear-gradient(180deg, transparent, rgba(232, 69, 71, .45), transparent);
  pointer-events: none;
}
.linea-diag.izq  { left: 6%;  transform: rotate(24deg); }
.linea-diag.der  { right: 6%; transform: rotate(-24deg); }
.linea-diag.izq2 { left: 11%; transform: rotate(24deg); opacity: .45; }
.linea-diag.der2 { right: 11%; transform: rotate(-24deg); opacity: .45; }

.brillo {
  position: absolute;
  width: 760px;
  height: 760px;
  left: 50%;
  top: -18%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(232, 69, 71, .20), transparent 62%);
  filter: blur(22px);
  pointer-events: none;
  animation: latido 9s ease-in-out infinite;
}
@keyframes latido {
  0%, 100% { opacity: .75; transform: translateX(-50%) scale(1); }
  50%      { opacity: 1;   transform: translateX(-50%) scale(1.09); }
}

.hero-caja {
  position: relative;
  z-index: 1;
  width: min(100% - 44px, 900px);
  margin-inline: auto;
  text-align: center;
}

.pildora {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  background: rgba(42, 11, 14, .82);
  border: 1px solid var(--borde);
  border-radius: 999px;
  padding: 8px 20px 8px 16px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--rojo-claro);
}
.punto {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--rojo-coral);
  box-shadow: 0 0 0 0 rgba(242, 85, 90, .7);
  animation: pulso 2.4s ease-out infinite;
}
@keyframes pulso {
  0%   { box-shadow: 0 0 0 0 rgba(242, 85, 90, .7); }
  70%  { box-shadow: 0 0 0 9px rgba(242, 85, 90, 0); }
  100% { box-shadow: 0 0 0 0 rgba(242, 85, 90, 0); }
}

.hero-titulo {
  margin-top: 30px;
  font-size: clamp(34px, 6.4vw, 66px);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.08;
}
.acento {
  background: linear-gradient(120deg, var(--rojo-claro), var(--rojo-coral) 45%, var(--rojo));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  margin: 26px auto 0;
  max-width: 660px;
  font-size: clamp(16px, 2vw, 19px);
  color: var(--texto-suave);
}
.hero-sub strong { color: var(--texto); font-weight: 600; }

.hero-acciones {
  margin-top: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px 26px;
  flex-wrap: wrap;
}

.hero-nota {
  margin-top: 20px;
  font-size: 14px;
  color: #8e7b7d;
}

.grafico {
  margin-top: clamp(40px, 7vw, 72px);
  height: 120px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.grafico svg { width: 100%; height: 100%; }
.linea-curva {
  stroke: var(--rojo);
  stroke-width: 2;
  stroke-linecap: round;
  filter: drop-shadow(0 0 10px rgba(232, 69, 71, .55));
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
  animation: trazar 2.6s var(--suave) .35s forwards;
}
.area-curva {
  fill: rgba(232, 69, 71, .10);
  opacity: 0;
  animation: aparecer 1.4s var(--suave) 1.9s forwards;
}
@keyframes trazar   { to { stroke-dashoffset: 0; } }
@keyframes aparecer { to { opacity: 1; } }

/* ---------- cifras ---------- */

.cifras {
  background: var(--granate);
  border-block: 1px solid var(--borde);
  padding: clamp(44px, 6vw, 62px) 0;
}
.cifras-lista {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
  text-align: center;
}
.cifras-lista li {
  padding-inline: 14px;
  border-left: 1px solid var(--borde);
}
.cifras-lista li:first-child { border-left: 0; }

.cifra {
  display: block;
  font-size: clamp(38px, 6vw, 58px);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1;
  background: linear-gradient(120deg, #fff, var(--rojo-claro));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.cifra-txt {
  display: block;
  margin-top: 12px;
  font-size: 14.5px;
  color: var(--texto-suave);
  line-height: 1.55;
}
.cifra-txt strong { color: var(--texto); font-weight: 600; }

/* ---------- problema ---------- */

.problemas {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.problemas li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--granate);
  border: 1px solid var(--borde-suave);
  border-radius: var(--radio);
  padding: 24px 26px;
  font-size: 16px;
  transition: border-color .3s var(--suave), transform .3s var(--suave);
}
.problemas li:hover { border-color: var(--borde); transform: translateY(-3px); }

.cruz {
  flex: 0 0 auto;
  width: 22px; height: 22px;
  margin-top: 3px;
  border-radius: 50%;
  background: rgba(232, 69, 71, .14);
  border: 1px solid var(--borde);
  position: relative;
}
.cruz::before, .cruz::after {
  content: "";
  position: absolute;
  left: 50%; top: 50%;
  width: 9px; height: 1.6px;
  background: var(--rojo-coral);
  border-radius: 2px;
}
.cruz::before { transform: translate(-50%, -50%) rotate(45deg); }
.cruz::after  { transform: translate(-50%, -50%) rotate(-45deg); }

.remate {
  margin-top: 40px;
  font-size: clamp(19px, 2.6vw, 25px);
  font-weight: 600;
  color: var(--blanco);
  line-height: 1.45;
  max-width: 760px;
  padding-left: 26px;
  border-left: 3px solid var(--rojo);
}

/* ---------- pasos ---------- */

.pasos {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: paso;
}
.paso {
  position: relative;
  background: linear-gradient(170deg, var(--granate-claro), var(--granate) 62%);
  border: 1px solid var(--borde-suave);
  border-radius: var(--radio);
  padding: 32px 26px 30px;
  overflow: hidden;
  transition: border-color .35s var(--suave), transform .35s var(--suave);
}
.paso::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--rojo), transparent);
  opacity: .55;
}
.paso:hover { border-color: var(--borde); transform: translateY(-5px); }

.paso-num {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--rojo-coral);
  margin-bottom: 16px;
}
.paso h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; }
.paso p  { font-size: 15px; color: var(--texto-suave); line-height: 1.6; }

/* ---------- casos ---------- */

.casos { display: grid; gap: 26px; }

.caso {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 0;
  background: var(--granate);
  border: 1px solid var(--borde-suave);
  border-radius: var(--radio);
  overflow: hidden;
  transition: border-color .35s var(--suave);
}
.caso:hover { border-color: var(--borde); }
.caso:nth-child(even) .caso-txt   { order: 2; }
.caso:nth-child(even) .caso-prueba { order: 1; }

.caso-txt { padding: clamp(28px, 4vw, 42px); }
.caso-txt p + p { margin-top: 14px; }
.caso-txt p { font-size: 15.5px; color: var(--texto-suave); }

.caso-metrica {
  font-size: clamp(26px, 3.6vw, 34px) !important;
  font-weight: 800;
  letter-spacing: -.025em;
  color: var(--blanco) !important;
  line-height: 1.1;
}
.caso-cat {
  margin-top: 8px !important;
  font-size: 13px !important;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--rojo-coral) !important;
  margin-bottom: 20px;
}

.caso-firma {
  margin-top: 26px;
  display: flex;
  align-items: center;
  gap: 13px;
  font-weight: 600;
  color: var(--blanco);
  font-size: 15px;
}
.caso-firma img {
  width: 46px; height: 46px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--borde);
}

.caso-prueba {
  background: var(--granate-claro);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(18px, 3vw, 30px);
  border-left: 1px solid var(--borde-suave);
}
.caso:nth-child(even) .caso-prueba {
  border-left: 0;
  border-right: 1px solid var(--borde-suave);
}
.caso-prueba img {
  border-radius: var(--radio-s);
  box-shadow: 0 22px 50px -22px rgba(0, 0, 0, .9);
  max-height: 380px;
  width: auto;
  object-fit: contain;
}

/* ---------- programa ---------- */

.incluye {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.tarjeta {
  background: var(--granate);
  border: 1px solid var(--borde-suave);
  border-radius: var(--radio);
  padding: 30px 26px;
  transition: border-color .35s var(--suave), transform .35s var(--suave);
}
.tarjeta:hover { border-color: var(--borde); transform: translateY(-5px); }
.tarjeta h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.tarjeta p  { font-size: 15px; color: var(--texto-suave); line-height: 1.6; }

/* ---------- cta ---------- */

.cta {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: clamp(80px, 11vw, 130px) 0;
  background:
    radial-gradient(ellipse 90% 120% at 50% 0%, rgba(140, 25, 30, .5), transparent 64%),
    linear-gradient(180deg, var(--negro-2), var(--negro));
  border-block: 1px solid var(--borde);
}
.cta-caja { position: relative; z-index: 1; max-width: 720px; }
.cta .kicker { margin-bottom: 14px; }
.cta-sub {
  margin: 20px auto 34px;
  color: var(--texto-suave);
  font-size: 17px;
  max-width: 560px;
}
.cta-nota { margin-top: 22px; font-size: 13.5px; color: #8e7b7d; }

/* ---------- faq ---------- */

.faq details {
  border-bottom: 1px solid var(--borde-suave);
}
.faq details:first-of-type { border-top: 1px solid var(--borde-suave); }

.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 24px 46px 24px 0;
  font-weight: 600;
  font-size: 17px;
  color: var(--blanco);
  position: relative;
  transition: color .25s var(--suave);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { color: var(--rojo-claro); }

.faq summary::after {
  content: "";
  position: absolute;
  right: 6px; top: 50%;
  width: 13px; height: 13px;
  margin-top: -7px;
  background:
    linear-gradient(var(--rojo-coral), var(--rojo-coral)) center/13px 1.7px no-repeat,
    linear-gradient(var(--rojo-coral), var(--rojo-coral)) center/1.7px 13px no-repeat;
  transition: transform .3s var(--suave);
}
.faq details[open] summary::after { transform: rotate(135deg); }

.faq-cuerpo {
  padding: 0 46px 26px 0;
  color: var(--texto-suave);
  font-size: 15.5px;
  animation: desplegar .32s var(--suave);
}
.faq-cuerpo a { color: var(--rojo-claro); }
@keyframes desplegar {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- pie ---------- */

.pie {
  background: #080203;
  padding: clamp(52px, 7vw, 74px) 0 40px;
  border-top: 1px solid var(--borde-suave);
}
.pie-alto {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--borde-suave);
}
.pie-marca img { height: 56px; width: auto; opacity: .92; }

.pie-enlaces {
  display: flex;
  gap: 12px 28px;
  flex-wrap: wrap;
  font-size: 14px;
}
.pie-enlaces a {
  color: var(--texto-suave);
  text-decoration: none;
  transition: color .25s var(--suave);
}
.pie-enlaces a:hover { color: var(--rojo-claro); }

.pie-aviso {
  margin-top: 30px;
  font-size: 12.5px;
  line-height: 1.75;
  color: #948083;
  max-width: 900px;
}
.pie-copy {
  margin-top: 26px;
  font-size: 12.5px;
  color: #8e7b7d;
  letter-spacing: .04em;
}

/* ---------- revelado al hacer scroll ---------- */

/* Se ocultan SOLO si el navegador ejecuta JavaScript (la clase .js la
   pone un script mínimo en la cabecera). Sin JS, todo se ve de entrada. */
.js .revelar {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--suave), transform .7s var(--suave);
}
.js .revelar.visible { opacity: 1; transform: none; }

/* escalonado dentro de cada rejilla */
.problemas li:nth-child(2), .pasos li:nth-child(2), .incluye .tarjeta:nth-child(2),
.cifras-lista li:nth-child(2) { transition-delay: .08s; }
.problemas li:nth-child(3), .pasos li:nth-child(3), .incluye .tarjeta:nth-child(3),
.cifras-lista li:nth-child(3) { transition-delay: .16s; }
.problemas li:nth-child(4), .pasos li:nth-child(4), .incluye .tarjeta:nth-child(4) { transition-delay: .24s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1000px) {
  .pasos, .incluye { grid-template-columns: repeat(2, 1fr); }
  .nav-enlaces { display: none; }
  .nav-caja { justify-content: space-between; }
  .nav-marca { margin-right: auto; }
}

@media (max-width: 860px) {
  .caso, .caso:nth-child(even) { grid-template-columns: 1fr; }
  .caso .caso-txt, .caso:nth-child(even) .caso-txt { order: 1; }
  .caso .caso-prueba, .caso:nth-child(even) .caso-prueba {
    order: 2;
    border-left: 0;
    border-right: 0;
    border-top: 1px solid var(--borde-suave);
  }
  .caso-prueba img { max-height: 320px; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .cifras-lista { grid-template-columns: 1fr; gap: 30px; }
  .cifras-lista li { border-left: 0; padding-inline: 0; }
  .cifras-lista li + li { border-top: 1px solid var(--borde); padding-top: 30px; }
  .problemas { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding: 118px 0 70px; }
  .hero-acciones { flex-direction: column; gap: 6px; }
  .hero-acciones .btn { width: 100%; }
  .grafico { height: 84px; }
  .remate { padding-left: 20px; font-size: 19px; }
  .pie-alto { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .pasos, .incluye { grid-template-columns: 1fr; }
  .caja, .caja-estrecha, .nav-caja, .hero-caja { width: calc(100% - 32px); }
  .btn-mini { padding: 10px 16px; font-size: 13.5px; }
  .nav-marca img { height: 36px; }
  .nav.compacta .nav-marca img { height: 32px; }
}

/* Solo se apagan los efectos intrusivos (bucles y latidos).
   Los micro-efectos y los revelados se mantienen a propósito:
   Windows trae esta preferencia activada de fábrica en muchos
   equipos y apagarlo todo dejaría la página muerta. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .brillo { animation: none; }
  .punto  { animation: none; }
  .linea-curva { animation: none; stroke-dashoffset: 0; }
  .area-curva  { animation: none; opacity: 1; }
}