/* Averen AI · landing
   Móvil primero. Sin dependencias externas: tipografía del sistema con Aptos
   delante (identidad AVE-003) para quien la tenga instalada. */

:root {
  --fondo: #0a0f1a;
  --fondo-hondo: #070b13;
  --superficie: #111a2b;
  --superficie-2: #16213a;
  --linea: rgba(255, 255, 255, 0.09);
  --linea-fuerte: rgba(255, 255, 255, 0.16);
  --texto: #eaf0f7;
  --texto-suave: #9aa8bc;
  --verde: #4be3a6;
  --azul: #6c8cff;
  --ambar: #ffb547;
  --rojo: #ff6b6b;
  --degradado: linear-gradient(100deg, #4be3a6 0%, #6c8cff 100%);
  --radio: 18px;
  --radio-peque: 12px;
  --sombra: 0 24px 60px rgba(0, 0, 0, 0.35);
  --margen: 16px;
  --ancho: 1160px;
  --letra: Aptos, "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  --letra-titulo: "Aptos Display", Aptos, "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  background: var(--fondo);
  color: var(--texto);
  font-family: var(--letra);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, canvas { display: block; max-width: 100%; }

a { color: var(--verde); text-underline-offset: 3px; }
a:hover { color: #7af0c1; }

h1, h2, h3 {
  font-family: var(--letra-titulo);
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.35rem, 9vw, 4.6rem); font-weight: 700; }
h2 { font-size: clamp(1.85rem, 6vw, 3.1rem); font-weight: 700; max-width: 22ch; }
h3 { font-size: 1.2rem; font-weight: 650; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }

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

.saltar {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--verde); color: #04120c; padding: 10px 14px; border-radius: 10px;
  font-weight: 600; text-decoration: none;
}
.saltar:focus { top: 12px; }

.envoltura {
  width: 100%;
  max-width: var(--ancho);
  margin: 0 auto;
  padding: 0 max(var(--margen), env(safe-area-inset-left)) 0 max(var(--margen), env(safe-area-inset-right));
}
.envoltura-estrecha { max-width: 860px; }

.degradado {
  background: var(--degradado);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.antetitulo {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 0.8rem; font-weight: 650; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--verde);
  margin-bottom: 1.1em;
}
.antetitulo::before {
  content: ""; width: 22px; height: 2px; border-radius: 2px; background: var(--degradado);
}

/* ---------- Botones ---------- */

.boton {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 50px; padding: 0 24px;
  border: 0; border-radius: 999px;
  background: var(--degradado); color: #04120c;
  font: 650 1rem/1 var(--letra); text-decoration: none; cursor: pointer;
  box-shadow: 0 10px 30px rgba(75, 227, 166, 0.22);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}
.boton:hover { color: #04120c; transform: translateY(-2px); box-shadow: 0 14px 36px rgba(75, 227, 166, 0.32); }
.boton:active { transform: translateY(0); }
.boton[disabled] { filter: grayscale(0.6) brightness(0.8); cursor: wait; transform: none; }

.boton-fantasma {
  background: transparent; color: var(--texto);
  box-shadow: inset 0 0 0 1.5px var(--linea-fuerte);
}
.boton-fantasma:hover { color: var(--texto); box-shadow: inset 0 0 0 1.5px var(--verde); }

.boton-peque { min-height: 40px; padding: 0 16px; font-size: 0.9rem; }
.boton-ancho { width: 100%; }

/* ---------- Cabecera ---------- */

.cabecera {
  position: sticky; top: 0; z-index: 50;
  padding-top: env(safe-area-inset-top);
  background: rgba(10, 15, 26, 0.72);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}
.cabecera.con-borde { border-bottom-color: var(--linea); }
.cabecera-fila { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }

.marca {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--texto); text-decoration: none;
  font-family: var(--letra-titulo); font-weight: 700; font-size: 1.2rem; letter-spacing: -0.02em;
}
.marca:hover { color: var(--texto); }
.marca-icono { width: 30px; height: 30px; }
.marca-ai { color: var(--texto-suave); font-weight: 600; }

.menu { display: none; gap: 28px; }
.menu a { color: var(--texto-suave); text-decoration: none; font-size: 0.95rem; }
.menu a:hover { color: var(--texto); }

/* ---------- Portada ---------- */

.portada { position: relative; padding: 40px 0 72px; overflow: hidden; isolation: isolate; }
.portada-fondo {
  position: absolute; inset: -20% -10% auto; height: 120%; z-index: -1;
  background:
    radial-gradient(40% 40% at 78% 30%, rgba(108, 140, 255, 0.22), transparent 70%),
    radial-gradient(45% 45% at 15% 10%, rgba(75, 227, 166, 0.16), transparent 70%);
}
.portada-fondo::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--linea) 1px, transparent 1px), linear-gradient(90deg, var(--linea) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(70% 60% at 50% 30%, #000 30%, transparent 75%);
  mask-image: radial-gradient(70% 60% at 50% 30%, #000 30%, transparent 75%);
  opacity: 0.5;
}

.portada-rejilla { display: grid; gap: 48px; align-items: center; }
.entradilla { font-size: 1.15rem; color: var(--texto-suave); max-width: 40ch; }

/* Cuenta atrás */
.cuenta {
  margin: 28px 0 28px; padding: 18px;
  background: rgba(17, 26, 43, 0.7);
  border: 1px solid var(--linea); border-radius: var(--radio);
  max-width: 480px;
}
.cuenta-titulo { font-size: 0.85rem; font-weight: 600; color: var(--texto-suave); letter-spacing: 0.04em; margin-bottom: 12px; }
.cuenta-cifras { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.cuenta-caja {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 12px 4px 10px; border-radius: var(--radio-peque);
  background: var(--fondo-hondo); border: 1px solid var(--linea);
}
.cuenta-num {
  font-family: var(--letra-titulo); font-weight: 700;
  font-size: clamp(1.7rem, 8vw, 2.4rem); line-height: 1;
  font-variant-numeric: tabular-nums;
}
.cuenta-caja:first-child .cuenta-num { color: var(--verde); }
.cuenta-uni { font-size: 0.72rem; color: var(--texto-suave); text-transform: uppercase; letter-spacing: 0.08em; }
.cuenta-fecha { margin: 10px 0 0; font-size: 0.85rem; color: var(--texto-suave); }
.cuenta.terminada .cuenta-cifras { opacity: 0.4; }
.no-js .cuenta-cifras { display: none; }

.acciones { display: flex; flex-wrap: wrap; gap: 12px; }
.acciones .boton { flex: 1 1 200px; }

/* La máquina */
.portada-visual { display: flex; flex-direction: column; align-items: center; }
.maquina {
  position: relative; width: min(100%, 440px); aspect-ratio: 1;
  border-radius: 34px;
  background: radial-gradient(80% 80% at 50% 40%, #13203a 0%, #0b1220 70%);
  border: 1px solid rgba(108, 140, 255, 0.35);
  box-shadow:
    0 0 0 8px rgba(255, 255, 255, 0.02),
    0 0 60px rgba(75, 227, 166, 0.16),
    inset 0 0 50px rgba(108, 140, 255, 0.12),
    var(--sombra);
  overflow: hidden;
}
.maquina::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1.5px;
  background: conic-gradient(from var(--giro, 0deg), transparent 0deg, var(--verde) 60deg, transparent 120deg, transparent 360deg);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  animation: girar 6s linear infinite;
  pointer-events: none;
}
@property --giro { syntax: "<angle>"; initial-value: 0deg; inherits: false; }
@keyframes girar { to { --giro: 360deg; } }

.maquina-red { position: absolute; inset: 0; width: 100%; height: 100%; }

.maquina-dato {
  position: absolute; padding: 6px 10px; border-radius: 8px;
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.04em;
  color: var(--texto); background: rgba(10, 15, 26, 0.75);
  border: 1px solid var(--linea-fuerte);
  animation: flotar 7s ease-in-out infinite;
}
.maquina-dato-1 { top: 16%; left: 12%; }
.maquina-dato-2 { top: 44%; right: 10%; animation-delay: -2.5s; }
.maquina-dato-3 { bottom: 26%; left: 20%; animation-delay: -4.5s; }
@keyframes flotar { 50% { transform: translateY(-8px); } }

.maquina-panel {
  position: absolute; left: 0; right: 0; bottom: 0;
  display: flex; align-items: center; gap: 8px;
  padding: 14px 20px;
  background: linear-gradient(transparent, rgba(7, 11, 19, 0.92) 45%);
}
.maquina-nombre {
  margin-left: auto; font-family: var(--letra-titulo); font-weight: 700;
  letter-spacing: 0.3em; text-transform: uppercase; font-size: 0.75rem; color: var(--texto-suave);
}
.maquina-pie { margin: 16px 0 0; font-size: 0.9rem; color: var(--texto-suave); }

.led {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: var(--verde); box-shadow: 0 0 10px var(--verde);
  animation: latir 2.4s ease-in-out infinite;
}
.led + .led { animation-delay: 0.4s; }
.led-ambar { background: var(--ambar); box-shadow: 0 0 10px var(--ambar); animation-delay: 0.9s; }
@keyframes latir { 50% { opacity: 0.45; } }

/* ---------- Secciones ---------- */

.seccion { padding: 80px 0; position: relative; }
.seccion-alterna {
  background: linear-gradient(180deg, var(--fondo-hondo), #0c1322);
  border-top: 1px solid var(--linea); border-bottom: 1px solid var(--linea);
}
.texto-ancho { max-width: 62ch; color: var(--texto-suave); font-size: 1.1rem; }

/* Cifras */
.cifras { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 36px 0 16px; }
.cifra {
  padding: 20px 18px; border-radius: var(--radio);
  background: var(--superficie); border: 1px solid var(--linea);
}
.cifra p { margin: 0; color: var(--texto-suave); font-size: 0.95rem; line-height: 1.45; }
.cifra .cifra-num {
  font-family: var(--letra-titulo); font-weight: 700; font-size: clamp(2.2rem, 10vw, 3.4rem);
  line-height: 1; margin-bottom: 10px; color: var(--texto);
  font-variant-numeric: tabular-nums;
}
.cifra-destacada .cifra-num { color: var(--verde); }
.cifras .cifra:last-child { grid-column: 1 / -1; }
.fuente { font-size: 0.85rem; color: var(--texto-suave); margin-bottom: 28px; }

/* Tarjetas */
.tarjetas { display: grid; gap: 14px; margin-top: 36px; }
.tarjeta {
  padding: 24px; border-radius: var(--radio);
  background: var(--superficie); border: 1px solid var(--linea);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.tarjeta:hover { border-color: rgba(75, 227, 166, 0.45); transform: translateY(-3px); }
.tarjeta p { margin: 0; color: var(--texto-suave); }
.icono {
  width: 44px; height: 44px; padding: 10px; margin-bottom: 16px;
  border-radius: 12px; background: rgba(75, 227, 166, 0.1);
  fill: none; stroke: var(--verde); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}

/* Demostración del cable */
.demo {
  margin-top: 36px; padding: 18px;
  display: grid; gap: 0;
  border-radius: 24px; background: var(--superficie);
  border: 1px solid var(--linea); box-shadow: var(--sombra);
}
.demo-etiqueta {
  font-size: 0.75rem; font-weight: 650; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--texto-suave); margin-bottom: 8px;
}
.demo-caja {
  padding: 16px; border-radius: var(--radio-peque);
  background: var(--fondo-hondo); border: 1px solid var(--linea);
}
.demo-titulo { display: flex; align-items: center; gap: 10px; font-weight: 650; margin-bottom: 12px; }
.demo-casos { list-style: none; margin: 0 0 12px; padding: 0; display: grid; gap: 8px; }
.demo-casos li {
  display: flex; align-items: center; gap: 10px; font-size: 0.95rem;
  padding: 8px 10px; border-radius: 8px; background: rgba(255, 255, 255, 0.03);
}
.demo-casos li::after {
  content: "Responde"; margin-left: auto; font-size: 0.75rem; color: var(--verde); font-weight: 600;
}
.punto { width: 8px; height: 8px; border-radius: 50%; background: var(--verde); box-shadow: 0 0 8px var(--verde); flex: none; }
.demo-dato { margin: 0; font-size: 0.9rem; color: var(--texto-suave); }
.demo-dato strong { color: var(--texto); font-variant-numeric: tabular-nums; }
.demo-estado { font-size: 0.95rem; margin-bottom: 10px; }

.demo-enlace {
  position: relative; height: 96px; margin: 0 auto;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.demo-cable {
  width: 3px; flex: 1; border-radius: 3px;
  background: repeating-linear-gradient(180deg, var(--verde) 0 8px, transparent 8px 16px);
  background-size: 100% 32px;
  animation: fluir-v 0.9s linear infinite;
  transition: transform 0.4s ease, opacity 0.4s ease;
}
.demo-enchufe {
  width: 14px; height: 14px; border-radius: 4px; margin: 2px 0;
  background: var(--verde); box-shadow: 0 0 14px var(--verde);
  transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.4s ease;
}
.demo-enlace-texto {
  position: absolute; left: calc(50% + 18px); top: 50%; transform: translateY(-50%);
  font-size: 0.75rem; font-weight: 650; color: var(--verde); white-space: nowrap;
}
@keyframes fluir-v { to { background-position: 0 32px; } }

.demo-mando { margin-top: 20px; display: grid; gap: 10px; }
.demo-mando .boton { width: 100%; }
.demo-aviso { margin: 0; font-size: 0.82rem; color: var(--texto-suave); text-align: center; }
.no-js .demo-mando .boton { display: none; }

/* Estado desenchufado */
.demo[data-estado="desconectado"] .demo-cable { animation: none; background: var(--linea-fuerte); opacity: 0.6; }
.demo[data-estado="desconectado"] .demo-cable-a { transform: translateY(-14px); }
.demo[data-estado="desconectado"] .demo-cable-b { transform: translateY(14px); }
.demo[data-estado="desconectado"] .demo-enchufe { background: var(--ambar); box-shadow: 0 0 14px var(--ambar); transform: translateX(20px) rotate(25deg); }
.demo[data-estado="desconectado"] .demo-enlace-texto { color: var(--ambar); }
.demo[data-estado="desconectado"] .demo-caja-consola .led { background: var(--ambar); box-shadow: 0 0 10px var(--ambar); }
.demo[data-estado="desconectado"] .demo-caja-consola { border-color: rgba(255, 181, 71, 0.35); }

/* Casos de uso */
.casos { display: grid; gap: 14px; margin: 36px 0 28px; }
.caso {
  position: relative; padding: 26px 24px; border-radius: var(--radio); overflow: hidden;
  background: linear-gradient(160deg, var(--superficie-2), var(--superficie));
  border: 1px solid var(--linea);
}
.caso::after {
  content: ""; position: absolute; inset: auto -40px -60px auto; width: 160px; height: 160px; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(108, 140, 255, 0.25), transparent);
}
.caso p { color: var(--texto-suave); margin: 0; }
.caso .caso-num {
  font-family: var(--letra-titulo); font-weight: 700; font-size: 0.9rem; letter-spacing: 0.1em;
  margin-bottom: 18px; color: var(--verde);
}
.sectores { list-style: none; padding: 0; margin: 8px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.sectores li {
  padding: 8px 14px; border-radius: 999px; font-size: 0.9rem;
  border: 1px solid var(--linea-fuerte); color: var(--texto);
}

/* Pasos */
.pasos { list-style: none; counter-reset: paso; margin: 36px 0 0; padding: 0; display: grid; gap: 0; }
.paso {
  counter-increment: paso; position: relative;
  padding: 0 0 32px 64px;
}
.paso::before {
  content: counter(paso, decimal-leading-zero);
  position: absolute; left: 0; top: -2px;
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--letra-titulo); font-weight: 700; font-size: 0.9rem;
  color: #04120c; background: var(--degradado);
}
.paso::after {
  content: ""; position: absolute; left: 21px; top: 50px; bottom: 6px; width: 2px;
  background: linear-gradient(var(--linea-fuerte), transparent);
}
.paso:last-child { padding-bottom: 0; }
.paso:last-child::after { display: none; }
.paso h3 { margin-bottom: 6px; padding-top: 8px; }
.paso p { margin: 0; color: var(--texto-suave); max-width: 56ch; }

/* Principios */
.principios { display: grid; gap: 1px; margin: 36px 0 0; background: var(--linea); border: 1px solid var(--linea); border-radius: var(--radio); overflow: hidden; }
.principio { padding: 22px 22px; background: var(--fondo-hondo); }
.principio dt { font-family: var(--letra-titulo); font-weight: 650; font-size: 1.1rem; margin-bottom: 6px; display: flex; align-items: center; gap: 10px; }
.principio dt::before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--verde); transform: rotate(45deg); flex: none; }
.principio dd { margin: 0; color: var(--texto-suave); }

/* Preguntas */
.faq { margin-top: 32px; border-top: 1px solid var(--linea); }
.faq details { border-bottom: 1px solid var(--linea); }
.faq summary {
  list-style: none; cursor: pointer; position: relative;
  padding: 20px 44px 20px 0; font-weight: 650; font-size: 1.08rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 6px; top: 50%; width: 12px; height: 12px; margin-top: -8px;
  border-right: 2px solid var(--verde); border-bottom: 2px solid var(--verde);
  transform: rotate(45deg); transition: transform 0.25s ease;
}
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq details p { color: var(--texto-suave); padding-right: 12px; margin: 0 0 22px; max-width: 70ch; }

/* Suscripción */
.seccion-suscribir {
  background:
    radial-gradient(60% 70% at 85% 20%, rgba(108, 140, 255, 0.18), transparent 70%),
    radial-gradient(50% 60% at 10% 90%, rgba(75, 227, 166, 0.12), transparent 70%),
    var(--fondo-hondo);
  border-top: 1px solid var(--linea);
}
.suscribir-rejilla { display: grid; gap: 32px; align-items: start; }
.suscribir-texto p { color: var(--texto-suave); font-size: 1.1rem; max-width: 46ch; }
.suscribir-texto .suscribir-nota { font-size: 0.9rem; }

.formulario {
  padding: 22px; border-radius: 24px;
  background: rgba(17, 26, 43, 0.85); border: 1px solid var(--linea-fuerte);
  box-shadow: var(--sombra);
}
.campo { margin-bottom: 16px; }
.campo label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 6px; }
.campo input[type="text"], .campo input[type="email"] {
  width: 100%; min-height: 52px; padding: 12px 14px;
  border-radius: var(--radio-peque); border: 1px solid var(--linea-fuerte);
  background: var(--fondo-hondo); color: var(--texto);
  font: 400 1rem/1.3 var(--letra);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.campo input:focus { outline: none; border-color: var(--verde); box-shadow: 0 0 0 3px rgba(75, 227, 166, 0.2); }
.campo input[aria-invalid="true"] { border-color: var(--rojo); }
.campo-trampa { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.campo-check { display: flex; gap: 12px; align-items: flex-start; }
.campo-check input { width: 22px; height: 22px; margin: 2px 0 0; flex: none; accent-color: var(--verde); }
.campo-check label { font-weight: 400; color: var(--texto-suave); margin: 0; font-size: 0.92rem; }
.formulario-mensaje { margin: 14px 0 0; font-size: 0.95rem; min-height: 1.2em; }
.formulario-mensaje.error { color: var(--rojo); }
.formulario-mensaje.ok { color: var(--verde); }
.formulario-legal { margin: 14px 0 0; font-size: 0.78rem; line-height: 1.5; color: var(--texto-suave); }

.formulario.enviado .campo, .formulario.enviado .boton, .formulario.enviado .formulario-legal { display: none; }
.formulario.enviado .formulario-mensaje {
  margin: 0; padding: 28px 8px; text-align: center; font-size: 1.15rem; font-weight: 600;
}

/* Pie */
.pie { padding: 40px 0 calc(40px + env(safe-area-inset-bottom)); border-top: 1px solid var(--linea); background: var(--fondo-hondo); }
.pie-fila { display: grid; gap: 14px; }
.pie p { margin: 0; color: var(--texto-suave); font-size: 0.92rem; }
.pie-enlaces { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.pie-enlaces a { color: var(--texto); text-decoration: none; font-size: 0.92rem; }
.pie-enlaces a:hover { color: var(--verde); }
.pie .pie-copy { font-size: 0.82rem; }

/* Páginas legales */
.legal { padding: 48px 0 80px; }
.legal h1 { font-size: clamp(2rem, 7vw, 3rem); margin-bottom: 0.6em; }
.legal h2 { font-size: 1.35rem; max-width: none; margin-top: 2em; }
.legal p, .legal li { color: var(--texto-suave); max-width: 72ch; }
.legal strong { color: var(--texto); }
.legal .volver { display: inline-block; margin-bottom: 32px; }

/* Aparición al hacer scroll (solo con JavaScript) */
.js .revela { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
.js .revela.visible { opacity: 1; transform: none; }

/* ---------- Pantallas más anchas ---------- */

@media (min-width: 600px) {
  :root { --margen: 24px; }
  .cifras { grid-template-columns: repeat(5, 1fr); }
  .cifras .cifra:last-child { grid-column: auto; }
  .tarjetas { grid-template-columns: repeat(2, 1fr); }
  .principios { grid-template-columns: repeat(2, 1fr); }
  .acciones .boton { flex: 0 0 auto; }
}

@media (min-width: 860px) {
  .menu { display: flex; }
  .portada { padding: 72px 0 110px; }
  .portada-rejilla { grid-template-columns: 1.25fr 0.75fr; gap: 48px; }
  h1 { font-size: clamp(3rem, 5.2vw, 4.3rem); }
  .dos-columnas { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px; align-items: start; }
  .dos-columnas .columna-titulo { position: sticky; top: 110px; }
  .dos-columnas .pasos { margin-top: 0; }
  .seccion { padding: 120px 0; }
  .tarjetas { grid-template-columns: repeat(3, 1fr); }
  .casos { grid-template-columns: repeat(3, 1fr); }
  .principios { grid-template-columns: repeat(3, 1fr); }
  .suscribir-rejilla { grid-template-columns: 1fr 1fr; gap: 64px; }
  .formulario { padding: 32px; }
  .pie-fila { grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; }
  .pie .pie-copy { grid-column: 1 / -1; }

  .demo { grid-template-columns: 1fr 140px 1fr; align-items: center; padding: 28px; }
  .demo-enlace { height: auto; width: 100%; flex-direction: row; padding-top: 26px; }
  .demo-cable {
    height: 3px; width: auto; flex: 1;
    background: repeating-linear-gradient(90deg, var(--verde) 0 8px, transparent 8px 16px);
    background-size: 32px 100%;
    animation-name: fluir-h;
  }
  .demo-enchufe { margin: 0 2px; }
  .demo-enlace-texto { left: 50%; top: calc(50% - 14px); transform: translateX(-50%); }
  .demo[data-estado="desconectado"] .demo-cable-a { transform: translateX(-16px); }
  .demo[data-estado="desconectado"] .demo-cable-b { transform: translateX(16px); }
  .demo[data-estado="desconectado"] .demo-enchufe { transform: translateY(20px) rotate(25deg); }
  .demo-mando { grid-column: 1 / -1; justify-items: center; }
  .demo-mando .boton { width: auto; }
  @keyframes fluir-h { to { background-position: 32px 0; } }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .revela { opacity: 1; transform: none; }
}