/* ==========================================================================
   nerdlabs.ar — Del caos al sistema
   Tinta, hueso y una sola señal. Una hoja canónica para todo el sitio:
   fuentes → tokens → base → accesibilidad → capas → topbar → componentes
   → home → páginas interiores → footer → responsive → movimiento reducido.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Fuentes autohospedadas (static/fonts/README.md) y respaldos con métricas
   ajustadas para que el cambio de fuente no mueva el layout.
   -------------------------------------------------------------------------- */

@font-face {
  font-family: 'Instrument Serif';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/instrument-serif/instrument-serif-latin-400-normal.9b8dd1ecf641.woff2") format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Instrument Serif';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/instrument-serif/instrument-serif-latin-400-italic.bc891bdd08ad.woff2") format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Inter Tight';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("../fonts/inter-tight/inter-tight-latin-wght-normal.f5af7a761c2b.woff2") format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/ibm-plex-mono/ibm-plex-mono-latin-400-normal.79936b18df9f.woff2") format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/ibm-plex-mono/ibm-plex-mono-latin-500-normal.b1c8a895f5fd.woff2") format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Instrument Serif Fallback';
  src: local('Times New Roman'), local('Times');
  size-adjust: 84.4%;
  ascent-override: 117.29%;
  descent-override: 36.73%;
  line-gap-override: 0%;
  /* Mismo rango que la fuente web: lo que ella no cubre (flechas) va a la del sistema. */
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Inter Tight Fallback';
  src: local('Arial'), local('Helvetica');
  size-adjust: 96.1%;
  ascent-override: 100.81%;
  descent-override: 25.1%;
  line-gap-override: 0%;
  /* Mismo rango que la fuente web: lo que ella no cubre (flechas) va a la del sistema. */
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono Fallback';
  src: local('Courier New'), local('Menlo');
  size-adjust: 99.98%;
  ascent-override: 102.52%;
  descent-override: 27.5%;
  line-gap-override: 0%;
  /* Mismo rango que la fuente web: lo que ella no cubre (flechas) va a la del sistema. */
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* --------------------------------------------------------------------------
   Tokens
   -------------------------------------------------------------------------- */

:root {
  --ink: #0a0a0b;
  /* Fondo de las páginas, un toque más gris que la tinta (menú y footer siguen en --ink). */
  --bg: #121214;
  --ink-2: #101012;
  --bone: #ece7df;
  --bone-2: #b9b3aa;
  /* --mute mide 4.1:1 sobre tinta: solo texto grande o decorativo. */
  --mute: #75716b;
  --hair: rgba(236, 231, 223, 0.09);
  --hair-2: rgba(236, 231, 223, 0.2);
  --signal: #ff5b23;

  --f-display: 'Instrument Serif', 'Instrument Serif Fallback', 'Times New Roman', serif;
  --f-sans: 'Inter Tight', 'Inter Tight Fallback', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --f-mono: 'IBM Plex Mono', 'IBM Plex Mono Fallback', ui-monospace, 'SFMono-Regular', monospace;

  /* Escala de títulos en serif: tres tamaños para todo el sitio. */
  --t-page: clamp(2.6rem, 6.6vw, 7.4rem);
  --t-block: clamp(2.6rem, 4.4vw, 4.8rem);
  --t-sub: clamp(1.6rem, 2.6vw, 2.6rem);

  --gutter: clamp(1.25rem, 3.2vw, 2.75rem);
  --side: clamp(18rem, 33vw, 34rem);
  --header-h: 6.5rem;
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */

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

html {
  background: var(--bg);
  color: var(--bone);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--f-sans);
  font-size: 1rem;
  line-height: 1.6;
  background: var(--bg);
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

body.nav-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

svg {
  display: block;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

em {
  font-style: italic;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

::selection {
  background: var(--signal);
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   Accesibilidad
   -------------------------------------------------------------------------- */

:focus-visible {
  outline: 1px solid var(--signal);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.6rem 0.9rem;
  background: var(--bone);
  color: var(--ink);
  font-family: var(--f-mono);
  font-size: 0.75rem;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
}

/* El skip link enfoca el <main>; no hace falta contorno en un bloque entero. */
main:focus {
  outline: none;
}

/* --------------------------------------------------------------------------
   Capas fijas: escena, respaldo, viñeta y grano
   -------------------------------------------------------------------------- */

.stage-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100vh;
  height: 100lvh;
  z-index: 0;
  display: block;
  /* La escena escucha el puntero desde window; el canvas no bloquea clics. */
  pointer-events: none;
}

.stage-vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 65% at 50% 50%, transparent 45%, rgba(18, 18, 20, 0.7) 100%),
    linear-gradient(to bottom, rgba(18, 18, 20, 0.55), transparent 16%, transparent 84%, rgba(18, 18, 20, 0.65));
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Halos estáticos: respaldo de la home sin WebGL (centro) y fondo de las páginas
   interiores (arriba a la derecha). */
.stage-fallback,
.backdrop-halo {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.stage-fallback {
  display: none;
  background:
    radial-gradient(circle at 50% 50%, rgba(236, 231, 223, 0.1), transparent 22%),
    radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--signal) 8%, transparent), transparent 38%);
}

.backdrop-halo {
  background:
    radial-gradient(ellipse 55% 45% at 78% 18%, rgba(236, 231, 223, 0.06), transparent 70%),
    radial-gradient(ellipse 40% 35% at 85% 12%, color-mix(in srgb, var(--signal) 5%, transparent), transparent 70%);
}

.no-webgl .stage-fallback {
  display: block;
}

.no-webgl .stage-canvas {
  display: none;
}

/* --------------------------------------------------------------------------
   Topbar
   -------------------------------------------------------------------------- */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem var(--gutter);
  transition: background-color 0.4s var(--ease), padding 0.4s var(--ease);
}

.topbar.is-scrolled {
  padding-block: 1.3rem;
  background: rgba(10, 10, 11, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--hair);
}

/* Con el menú móvil abierto, el header pierde el blur: un elemento con backdrop-filter
   pasa a contener a sus hijos fixed y el menú quedaba encerrado en el alto del header. */
body.nav-open .topbar {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.topbar__logo {
  color: var(--bone);
}

.topbar__logo svg {
  width: 8rem;
  height: auto;
  overflow: visible;
  transition: transform 0.25s ease-out, filter 0.25s ease-out;
}

/* Logo vivo: una ola recorre las letras cada 6,5 s; cada una se enciende en señal
   y vuelve al hueso. */
.logo-char {
  fill: var(--bone);
  animation: logo-pulse 6.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.char-2 { animation-delay: 0.08s; }
.char-3 { animation-delay: 0.16s; }
.char-4 { animation-delay: 0.24s; }
.char-5 { animation-delay: 0.32s; }
.char-6 { animation-delay: 0.4s; }
.char-7 { animation-delay: 0.48s; }
.char-8 { animation-delay: 0.56s; }

@keyframes logo-pulse {
  0%, 30%, 100% {
    fill: var(--bone);
    filter: drop-shadow(0 0 0 transparent);
  }
  10% {
    fill: var(--signal);
    filter: drop-shadow(0 0 7px color-mix(in srgb, var(--signal) 90%, transparent));
  }
}

@media (hover: hover) {
  .topbar__logo:hover svg {
    transform: scale(1.03);
    filter: drop-shadow(0 0 10px color-mix(in srgb, var(--signal) 55%, transparent)) drop-shadow(0 0 22px color-mix(in srgb, var(--signal) 30%, transparent));
  }
}

.topbar__nav ul {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.topbar__nav a {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bone-2);
  transition: color 0.25s var(--ease);
}

.topbar__nav a[aria-current='page'] {
  position: relative;
  color: var(--bone);
}

/* Sección actual: un "^" en señal debajo del enlace, con el trazo del chevron de la
   home (misma forma, girada hacia arriba y más chica). */
.topbar__nav a[aria-current='page']::after {
  content: '';
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  width: 0.9rem;
  height: 0.45rem;
  transform: translateX(-50%);
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 16' fill='none' stroke='%23ff5b23' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 14L16 2l14 12'/%3E%3C/svg%3E") center / contain no-repeat;
  pointer-events: none;
}

/* Los enlaces del menú se encienden en rojo; el botón de agendar conserva su estilo. */
@media (hover: hover) {
  .topbar__nav a:hover {
    color: var(--signal);
  }
}

.topbar__nav .topbar__cta {
  /* inline-block para que el :active pueda escalarlo; el margen negativo evita que su
     relleno agrande la barra (en el prototipo es inline y no cuenta en el alto). */
  display: inline-block;
  margin-block: -0.4rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--hair-2);
  color: var(--bone);
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease), color 0.25s var(--ease), transform 0.16s ease-out;
}

.topbar__nav .topbar__cta:active {
  transform: scale(0.97);
}

@media (hover: hover) {
  .topbar__nav .topbar__cta:hover {
    background: var(--bone);
    border-color: var(--bone);
    color: var(--ink);
  }
}

.topbar__toggle {
  display: none;
  position: relative;
  /* Área táctil de 44 px; el margen negativo alinea las líneas con el borde del texto. */
  width: 2.75rem;
  height: 2.75rem;
  margin-right: -0.6rem;
  padding: 0;
  border: 0;
  background: none;
  color: var(--bone);
  cursor: pointer;
}

/* Tres líneas que se cruzan en una X con el menú abierto. */
.topbar__toggle-bars,
.topbar__toggle-bars::before,
.topbar__toggle-bars::after {
  position: absolute;
  left: 50%;
  width: 1.5rem;
  height: 1.5px;
  margin-left: -0.75rem;
  background: currentColor;
  transition: transform 0.25s var(--ease-out), opacity 0.2s var(--ease-out);
}

.topbar__toggle-bars {
  top: 50%;
}

.topbar__toggle-bars::before,
.topbar__toggle-bars::after {
  content: '';
  left: 0;
  margin-left: 0;
}

.topbar__toggle-bars::before {
  transform: translateY(-0.45rem);
}

.topbar__toggle-bars::after {
  transform: translateY(0.45rem);
}

.topbar__toggle[aria-expanded='true'] .topbar__toggle-bars {
  background: transparent;
}

.topbar__toggle[aria-expanded='true'] .topbar__toggle-bars::before {
  transform: rotate(45deg);
}

.topbar__toggle[aria-expanded='true'] .topbar__toggle-bars::after {
  transform: rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Componentes compartidos
   -------------------------------------------------------------------------- */

/* Índice de bloque: "02" en señal + nombre + línea fina hasta el borde. */
.chapter__index {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1.75rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.chapter__label {
  margin-left: 0.6rem;
}

.chapter__index b {
  font-weight: 500;
  color: var(--signal);
}

.chapter__index::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--hair-2);
}

.chapter__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-block);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--bone);
  text-wrap: balance;
}

/* Primera letra de cada título de bloque invertida: bloque rojo con la letra en tinta. */
.chapter__title::first-letter,
.initial::first-letter {
  /* Relleno mínimo: el bloque no corta la letra ni la separa del resto de la palabra. */
  padding: 0 0.03em;
  background: var(--signal);
  color: var(--ink);
  text-shadow: none;
}

.chapter__title--xl {
  font-size: clamp(2.6rem, 4.2vw, 4.6rem);
}

.chapter__title em,
.hero__title em {
  color: var(--signal);
}

.chapter__text {
  margin-top: 1.75rem;
  font-size: clamp(1.08rem, 1.25vw, 1.3rem);
  line-height: 1.6;
  color: var(--bone-2);
  max-width: 36ch;
  text-wrap: pretty;
}

.chapter__side > .chapter__text:first-child {
  margin-top: 0;
}

/* Lista de capacidades: un ">" en color señal marca cada ítem. */
.spec-list {
  display: grid;
  gap: 0.85rem;
  margin-top: 2rem;
}

.spec-list li {
  display: grid;
  grid-template-columns: 1.4rem 1fr;
  align-items: baseline;
  overflow-wrap: anywhere;
  font-size: clamp(0.98rem, 1.05vw, 1.1rem);
  line-height: 1.45;
  color: var(--bone);
}

.spec-list li::before {
  content: '>';
  font-family: var(--f-mono);
  font-weight: 500;
  color: var(--signal);
}

.actions {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem 2rem;
}

.chapter__side > .btn {
  margin-top: 2.25rem;
}

/* Botones: con borde los secundarios; relleno hueso el principal (uno por pantalla). */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 1.1rem;
  padding: 1.05rem 1.35rem;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: 1px solid var(--hair-2);
  background: none;
  color: var(--bone);
  cursor: pointer;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.16s ease-out;
}

.btn:active {
  transform: scale(0.97);
}

.btn__arrow {
  transition: transform 0.35s var(--ease);
}

.btn--solid {
  background: var(--bone);
  border-color: var(--bone);
  color: var(--ink);
  text-shadow: none;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--hair-2);
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bone);
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

@media (hover: hover) {
  .btn:hover {
    border-color: var(--bone);
  }

  .btn:hover .btn__arrow {
    transform: translateX(4px);
  }

  .btn--solid:hover {
    background: var(--signal);
    border-color: var(--signal);
  }

  .link-arrow:hover {
    color: var(--signal);
    border-color: var(--signal);
  }
}

/* Píldoras: filtros, tags y opciones; la activa se marca con borde y punto en señal. */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--hair-2);
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bone-2);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.16s ease-out;
}

.pill:active {
  transform: scale(0.97);
}

.pill::before {
  content: '';
  width: 0.4rem;
  height: 0.4rem;
  border: 1px solid currentColor;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.pill[aria-current='page'] {
  color: var(--bone);
  border-color: var(--signal);
}

.pill[aria-current='page']::before {
  background: var(--signal);
  border-color: var(--signal);
}

@media (hover: hover) {
  .pill:hover {
    color: var(--bone);
    border-color: var(--bone-2);
  }
}

.pill__count {
  color: var(--bone-2);
}

/* Estado inicial de las piezas que revela GSAP (solo si el JS de la home cargó). */
.js-ready [data-reveal] {
  opacity: 0;
}

/* --------------------------------------------------------------------------
   Home: la materia vive en el centro; el texto, en los costados
   -------------------------------------------------------------------------- */

main {
  position: relative;
  z-index: 3;
  /* Un halo del color del fondo separa la letra de las partículas que pasan detrás. */
  text-shadow: 0 0 1.2rem var(--bg), 0 0 0.35rem var(--bg);
}

.chapter {
  position: relative;
  min-height: 130vh;
  min-height: 130svh;
  display: flex;
  /* El snap deja cada capítulo con su texto arriba, bajo el header. */
  align-items: flex-start;
  padding: clamp(6.5rem, 15vh, 9rem) var(--gutter) 8rem;
}

.chapter--right {
  justify-content: flex-end;
}

.chapter--split {
  justify-content: space-between;
  gap: 2rem;
}

/* El cierre ocupa una pantalla; el footer llega aparte, con el último scroll. */
.chapter--cta {
  min-height: 100vh;
  min-height: 100svh;
}

.chapter--cta .chapter__side {
  width: clamp(18rem, 38vw, 38rem);
}

.chapter__side {
  width: var(--side);
  max-width: 100%;
}

.hero {
  min-height: 100vh;
  min-height: 100svh;
  align-items: flex-end;
  /* Deja libre la franja inferior para la flecha y la leyenda fija. */
  padding-bottom: clamp(10rem, 21vh, 12.5rem);
}

/* Grotesca apretada y la palabra clave en serif itálica. */
.hero__title {
  font-family: var(--f-sans);
  font-weight: 500;
  font-size: clamp(3.2rem, 7.4vw, 8.6rem);
  line-height: 0.9;
  letter-spacing: -0.05em;
}

.hero__title .nowrap {
  white-space: nowrap;
}

.hero__title em {
  font-family: var(--f-display);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.hero__title .line {
  display: block;
  overflow: hidden;
  /* Con line-height 0.9 la cola de la "j" itálica cae fuera de la línea: la máscara
     necesita aire abajo, y el margen negativo devuelve el interlineado original. */
  padding-bottom: 0.2em;
  margin-bottom: -0.2em;
}

.hero__title .line > span {
  display: inline-block;
  padding-right: 0.06em;
}

.hero .chapter__side--left {
  width: clamp(20rem, 60vw, 64rem);
}

.hero .chapter__side--right {
  /* Más ancha que en el prototipo: la bajada va en serif grande (ver abajo). */
  width: clamp(16rem, 28vw, 26rem);
  padding-bottom: 0.4rem;
}

/* Bajada del hero en la serif de los títulos, un poco más grande que el texto corrido. */
.hero .chapter__side--right .chapter__text {
  font-family: var(--f-display);
  font-size: clamp(1.45rem, 2.1vw, 2.1rem);
  line-height: 1.25;
  letter-spacing: -0.005em;
}

.js-ready .hero__title .line > span {
  /* Más que el 100 %: la máscara tiene aire extra abajo y no debe asomar nada. */
  transform: translateY(130%);
}

/* Métricas */
.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 2.25rem;
  border-top: 1px solid var(--hair-2);
}

/* El número va arriba aunque en el marcado el <dt> preceda al <dd>. */
.metric {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  padding: 1.25rem 1rem 0 0;
}

.metric + .metric {
  padding-left: 1rem;
  border-left: 1px solid var(--hair);
}

/* Etiqueta chica con información: hueso 2, no gris (contraste). */
.metric__label {
  font-family: var(--f-mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.metric__value {
  margin-bottom: 0.5rem;
  font-family: var(--f-display);
  font-size: clamp(2.4rem, 3.4vw, 3.4rem);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--bone);
}

/* Leyenda de la escena */
.stage-caption {
  position: fixed;
  left: 50%;
  bottom: calc(1.5rem + env(safe-area-inset-bottom, 0px));
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transform: translateX(-50%);
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
  white-space: nowrap;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}

/* Cuando entra el footer, la leyenda se retira para no pisarlo. */
.stage-caption.is-hidden {
  opacity: 0;
}

.stage-caption [data-cap-index] {
  color: var(--signal);
}

.stage-caption [data-cap-entropy] {
  display: inline-block;
  min-width: 2.6em;
  font-variant-numeric: tabular-nums;
  color: var(--bone);
}

.stage-caption__sep {
  width: 1.5rem;
  height: 1px;
  background: var(--hair-2);
}

/* Chevron fijo: centrado sobre la leyenda. Baja capítulo a capítulo; cuando
   entra el footer gira, se apoya abajo del todo y lleva de vuelta al inicio. */
.next-chapter {
  position: fixed;
  left: 0;
  right: 0;
  bottom: calc(4.75rem + env(safe-area-inset-bottom, 0px));
  z-index: 6;
  width: fit-content;
  margin-inline: auto;
  padding: 0.75rem 1rem;
  border: 0;
  background: none;
  color: var(--signal);
  cursor: pointer;
  transition: transform 0.6s var(--ease), color 0.25s var(--ease);
}

.next-chapter[hidden] {
  display: none;
}

.next-chapter svg {
  display: block;
  width: 2.5rem;
  height: 1.25rem;
  animation: next-nudge 2.4s var(--ease) infinite;
}

/* Arriba: gira 180° (el empujoncito también se invierte) y baja a la franja del copyright. */
.next-chapter.is-top {
  transform: translateY(3.5rem) rotate(180deg);
}

@media (hover: hover) {
  .next-chapter:hover {
    color: var(--bone);
  }
}

.next-chapter:active svg {
  scale: 0.9;
}

@keyframes next-nudge {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(4px); }
}

/* --------------------------------------------------------------------------
   Páginas interiores: estructura común
   -------------------------------------------------------------------------- */

.page {
  position: relative;
  padding: calc(var(--header-h) + clamp(2.5rem, 8vh, 5rem)) var(--gutter) clamp(5rem, 12vh, 8rem);
}

.page-head {
  max-width: 72rem;
}

.page-title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-page);
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--bone);
  text-wrap: balance;
}

/* Los títulos grandes tienen interlineado < 1: el bloque de la inicial sobresale por
   arriba, así que el índice que los precede necesita más aire. */
.page-head > .chapter__index {
  margin-bottom: clamp(2.5rem, 5vh, 3.5rem);
}

.received__inner > .chapter__index {
  margin-bottom: clamp(3.5rem, 8vh, 5rem);
}

.page-lead {
  margin-top: 2rem;
  max-width: 44ch;
  font-size: clamp(1.08rem, 1.3vw, 1.35rem);
  line-height: 1.6;
  color: var(--bone-2);
  text-wrap: pretty;
}

/* Enlace dentro de un texto: hueso con subrayado fino tintado de señal. */
.text-link {
  color: var(--bone);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--signal) 50%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  overflow-wrap: anywhere;
  transition: color 0.25s var(--ease), text-decoration-color 0.25s var(--ease);
}

@media (hover: hover) {
  .text-link:hover {
    color: var(--signal);
    text-decoration-color: var(--signal);
  }
}

/* Campos: línea de escritura sin caja; el foco enciende la línea en señal. */
.field__label {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.field__input,
.field > input,
.field > textarea {
  display: block;
  width: 100%;
  padding: 0.5rem 0 0.75rem;
  border: 0;
  border-bottom: 1px solid var(--hair-2);
  border-radius: 0;
  background: transparent;
  /* 16 px o más: los navegadores móviles no hacen zoom al enfocar. */
  font-size: max(1rem, clamp(1.15rem, 1.6vw, 1.5rem));
  color: var(--bone);
  caret-color: var(--signal);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  -webkit-appearance: none;
  appearance: none;
}

.field__input::placeholder,
.field > input::placeholder,
.field > textarea::placeholder {
  /* Hueso al 52 %: ~4.8:1 sobre tinta, se distingue de un valor escrito. */
  color: rgba(236, 231, 223, 0.52);
}

.field__input:focus,
.field > input:focus,
.field > textarea:focus {
  outline: none;
  border-bottom-color: var(--signal);
  box-shadow: 0 1px 0 0 var(--signal);
}

.field__input:focus-visible,
.field > input:focus-visible,
.field > textarea:focus-visible {
  outline: 1px solid var(--signal);
  outline-offset: 6px;
}

/* Búsqueda */
.search-form {
  margin-top: 3rem;
  max-width: 40rem;
}

.search-form__row {
  display: flex;
  align-items: flex-end;
  gap: 1.25rem;
}

.search-results {
  margin-top: 4rem;
  max-width: 48rem;
  border-top: 1px solid var(--hair);
}

.search-results li {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--hair);
}

/* El h2 solo da la jerarquía; el tamaño lo pone el enlace. */
.search-results__title {
  font: inherit;
}

.search-results__link {
  font-family: var(--f-display);
  font-size: var(--t-sub);
  line-height: 1.1;
  color: var(--bone);
  transition: color 0.25s var(--ease);
}

@media (hover: hover) {
  .search-results__link:hover {
    color: var(--signal);
  }
}

.search-results p {
  margin-top: 0.5rem;
  color: var(--bone-2);
}

.search-pager {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
}

/* --------------------------------------------------------------------------
   Quiénes somos: el manifiesto y el juego comparten la primera pantalla
   -------------------------------------------------------------------------- */

.about-open {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding: calc(var(--header-h) + clamp(1.5rem, 5vh, 3.5rem)) var(--gutter) 0;
}

.about-open__head {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.75rem;
  padding-bottom: clamp(2rem, 5vh, 3rem);
}

.about-open__label {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

/* Titular manifiesto: dos líneas como máximo en todos los anchos. */
.manifesto {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-page);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.manifesto em {
  color: var(--signal);
}

.manifesto .line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.12em;
  margin-bottom: -0.12em;
}

.manifesto .line > span {
  display: inline-block;
}

/* Revelado por línea con máscara; sin JS o con movimiento reducido se ve completo. */
.js .manifesto .line > span {
  animation: mask-up 0.9s var(--ease-out) both;
}

.js .manifesto .line:nth-child(2) > span {
  animation-delay: 0.09s;
}

@keyframes mask-up {
  from { transform: translateY(110%); }
  to { transform: none; }
}

.about-open__lead {
  max-width: 46ch;
  font-size: clamp(1.05rem, 1.3vw, 1.3rem);
  line-height: 1.6;
  color: var(--bone-2);
  text-wrap: pretty;
}

/* Consola del juego: a sangre, líneas finas y marcas de esquina en señal. */
.console {
  position: relative;
  margin-inline: calc(var(--gutter) * -1);
  text-shadow: none;
}

.console__bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem 2rem;
  padding: 0.9rem var(--gutter);
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.console__screen {
  position: relative;
  background: var(--ink-2);
  border-block: 1px solid var(--hair-2);
}

.console__screen::before,
.console__screen::after {
  content: '';
  position: absolute;
  z-index: 1;
  width: 14px;
  height: 14px;
  border: 0 solid var(--signal);
  pointer-events: none;
}

.console__screen::before {
  top: -1px;
  left: var(--gutter);
  border-top-width: 1px;
  border-left-width: 1px;
}

.console__screen::after {
  bottom: -1px;
  right: var(--gutter);
  border-bottom-width: 1px;
  border-right-width: 1px;
}

.console__screen canvas {
  display: block;
}

/* Al jugar con el teclado, Chrome marca el canvas con el contorno de foco: se quita.
   La consola ya indica el estado (aviso "> Presioná Espacio" y marcas de esquina). */
.console__screen canvas:focus,
.console__screen canvas:focus-visible {
  outline: none;
}

.console__bar kbd {
  font: inherit;
  color: var(--bone);
  padding: 0.1rem 0.4rem;
  border: 1px solid var(--hair-2);
}

.console__prompt {
  color: var(--bone);
}

.console__prompt::before {
  content: '> ';
  color: var(--signal);
}

.console__touch {
  display: none;
}

@media (hover: none) and (pointer: coarse) {
  .console__keys {
    display: none;
  }

  .console__touch {
    display: inline;
  }
}

.console__caret {
  display: inline-block;
  width: 0.6em;
  height: 1em;
  margin-left: 0.3em;
  vertical-align: -0.15em;
  background: var(--signal);
  animation: caret 1.1s steps(1) infinite;
}

@keyframes caret {
  50% { opacity: 0; }
}

.about-chapter {
  position: relative;
  padding: clamp(6rem, 16vh, 10rem) var(--gutter) 0;
}

/* Introducción del capítulo: el texto va debajo del título. */
.about-chapter__intro .chapter__text {
  max-width: 52ch;
}

/* Fichas de los fundadores: solo tipografía y líneas finas. */
.founders {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2.5rem, 5vw, 5rem);
  margin-top: clamp(3.5rem, 9vh, 6rem);
}

.founder {
  position: relative;
  padding-top: 1.75rem;
  border-top: 1px solid var(--hair-2);
}

/* La línea superior se enciende en señal al pasar el mouse. */
.founder::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .founder:hover::before {
    transform: scaleX(1);
  }
}

.founder__role {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.founder__role b {
  margin-right: 0.75rem;
  font-weight: 500;
  color: var(--signal);
}

.founder__name {
  margin-top: 1rem;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-block);
  line-height: 0.95;
  letter-spacing: -0.015em;
  color: var(--bone);
  overflow-wrap: anywhere;
}

.founder__bio {
  margin-top: 1.5rem;
  max-width: 44ch;
  font-size: 1.08rem;
  line-height: 1.6;
  color: var(--bone-2);
}

.founder__skills {
  margin-top: 1.75rem;
}

.founder__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* Filosofía: texto y una cita a gran escala. */
.philosophy {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 2.5rem clamp(2rem, 6vw, 6rem);
  align-items: start;
}

.philosophy .chapter__title {
  grid-column: 1;
  grid-row: 1 / span 2;
}

.philosophy__text {
  grid-column: 2;
  margin-top: 0;
  max-width: 58ch;
}

.philosophy__quote {
  grid-column: 1 / -1;
  margin: clamp(1rem, 4vh, 3rem) 0;
  padding-left: clamp(1.25rem, 3vw, 2.5rem);
  border-left: 1px solid var(--signal);
  font-family: var(--f-display);
  font-style: italic;
  font-size: var(--t-block);
  line-height: 1;
  letter-spacing: -0.015em;
  color: var(--bone);
  text-wrap: balance;
}

.philosophy__quote em {
  color: var(--signal);
}

/* Principios: filas numeradas a todo el ancho. */
.principles {
  margin-top: clamp(3rem, 8vh, 5rem);
  border-top: 1px solid var(--hair-2);
}

.principle {
  display: grid;
  grid-template-columns: minmax(5rem, 2fr) minmax(0, 4fr) minmax(0, 6fr);
  gap: 1rem clamp(1.5rem, 4vw, 4rem);
  align-items: baseline;
  padding: clamp(2rem, 5vh, 3rem) 0;
  border-bottom: 1px solid var(--hair);
}

.principle__num {
  font-family: var(--f-display);
  font-size: var(--t-block);
  line-height: 0.9;
  color: var(--signal);
}

.principle__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-sub);
  line-height: 1.05;
  color: var(--bone);
}

.principle__text {
  max-width: 52ch;
  font-size: 1.08rem;
  line-height: 1.6;
  color: var(--bone-2);
}

.about-cta {
  padding-bottom: clamp(6rem, 16vh, 10rem);
}

.about-cta__title {
  max-width: 14ch;
}

@media (max-width: 860px) {
  .founders,
  .philosophy,
  .principle {
    grid-template-columns: 1fr;
  }

  .philosophy .chapter__title,
  .philosophy__text {
    grid-column: 1;
    grid-row: auto;
  }

  .principle {
    gap: 0.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .js .manifesto .line > span,
  .console__caret {
    animation: none;
  }

  .founder::before {
    transition: none;
  }
}

/* --------------------------------------------------------------------------
   Contacto: brief guiado en tres bloques
   -------------------------------------------------------------------------- */

.contact__layout {
  display: grid;
  grid-template-columns: 5rem minmax(0, 7fr) minmax(0, 3fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  margin-top: clamp(3rem, 8vh, 5rem);
}

/* Riel 01-02-03: el bloque con foco en señal; los completos en hueso. */
.contact__rail {
  position: sticky;
  top: calc(var(--header-h) + 2rem);
  align-self: start;
  display: grid;
  gap: 1.25rem;
  font-family: var(--f-display);
  font-size: 2.6rem;
  line-height: 1;
  color: var(--mute);
}

.contact__rail span {
  transition: color 0.2s var(--ease-out);
}

.contact__rail .is-done {
  color: var(--bone);
}

.contact__rail .is-current {
  color: var(--signal);
}

.brief fieldset {
  border: 0;
  min-width: 0;
}

.brief__block {
  padding-top: 0.5rem;
}

.brief__block + .brief__block {
  margin-top: clamp(3rem, 8vh, 5rem);
}

.brief__block > legend {
  float: left;
  width: 100%;
  margin-bottom: 1.5rem;
}

.brief__block > legend + * {
  clear: both;
}

.brief__block > legend .chapter__index {
  margin-bottom: 0;
}

.field {
  display: block;
}

.field + .field {
  margin-top: 2rem;
}

.field > textarea {
  min-height: 7.5rem;
  line-height: 1.5;
  resize: vertical;
}

.req {
  color: var(--signal);
}

.field__error {
  margin-top: 0.6rem;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--signal);
}

.field__error::before {
  content: '> ';
}

.field.is-invalid > input,
.field.is-invalid > textarea {
  border-bottom-color: var(--signal);
}

.alert {
  margin-bottom: 2.5rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--signal);
  color: var(--bone);
}

.alert::before {
  content: '> ';
  font-family: var(--f-mono);
  color: var(--signal);
}

/* Interruptor de reunión: el checkbox real queda accesible, solo se oculta a la vista. */
.switch {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  cursor: pointer;
}

.switch input,
.choice input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.switch__track {
  flex: none;
  position: relative;
  width: 3.25rem;
  height: 1.75rem;
  border: 1px solid var(--hair-2);
  transition: border-color 0.2s var(--ease-out);
}

.switch__track::after {
  content: '';
  position: absolute;
  top: 0.3rem;
  left: 0.3rem;
  width: 1.05rem;
  height: 1.05rem;
  background: var(--bone-2);
  transition: transform 0.2s var(--ease-out), background-color 0.2s var(--ease-out);
}

.switch input:checked + .switch__track {
  border-color: var(--signal);
}

.switch input:checked + .switch__track::after {
  transform: translateX(1.45rem);
  background: var(--signal);
}

.switch input:focus-visible + .switch__track {
  outline: 1px solid var(--signal);
  outline-offset: 4px;
}

.switch__text strong {
  display: block;
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--bone);
}

.switch__text span {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.95rem;
  color: var(--bone-2);
}

.slots {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

.slots[hidden] {
  display: none;
}

.slots__label {
  margin-bottom: 0.75rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.choices {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.choice {
  position: relative;
}

.choice .pill {
  cursor: pointer;
}

.choice input:checked + .pill {
  color: var(--bone);
  border-color: var(--signal);
}

.choice input:checked + .pill::before {
  background: var(--signal);
  border-color: var(--signal);
}

.choice input:focus-visible + .pill {
  outline: 1px solid var(--signal);
  outline-offset: 3px;
}

.brief__submit {
  margin-top: 3rem;
}

.contact__aside {
  position: sticky;
  top: calc(var(--header-h) + 2rem);
  align-self: start;
}

.direct dt {
  margin-top: 1.5rem;
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.direct dt:first-child {
  margin-top: 0;
}

.direct dd {
  margin-top: 0.45rem;
  text-wrap: pretty;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--bone);
}

.direct a {
  color: var(--signal);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--signal) 45%, transparent);
  text-underline-offset: 0.22em;
  overflow-wrap: anywhere;
}

.next-steps {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--hair-2);
}

.next-steps__title {
  margin-bottom: 0.75rem;
  font-family: var(--f-mono);
  font-weight: 400;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.next-steps li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--hair);
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--bone-2);
  text-wrap: pretty;
}

.next-steps__num {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  line-height: 1.95;
  color: var(--signal);
}

.next-steps strong {
  font-weight: 500;
  color: var(--bone);
}

@media (max-width: 860px) {
  .contact__layout {
    grid-template-columns: 1fr;
  }

  .contact__rail {
    display: none;
  }

  .contact__aside {
    position: static;
  }
}

@media (prefers-reduced-motion: reduce) {
  .switch__track,
  .switch__track::after,
  .contact__rail span {
    transition: none;
  }
}

/* Confirmación de contacto: "Recibido." y un registro de próximos pasos. */
.received {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
}

.received__inner {
  width: 100%;
  max-width: 64rem;
}

.received__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-page);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--bone);
}

.received__log {
  margin-top: clamp(2rem, 6vh, 3.5rem);
  max-width: 52ch;
  border-top: 1px solid var(--hair-2);
}

.received__log li {
  display: grid;
  grid-template-columns: 1.6rem 1fr;
  padding: 1rem 0;
  border-bottom: 1px solid var(--hair);
  font-family: var(--f-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--bone-2);
}

.received__log li::before {
  content: '>';
  color: var(--signal);
}

.received__log strong {
  font-weight: 500;
  color: var(--bone);
}

/* Con JS, las líneas entran en secuencia; sin JS o con movimiento reducido, están todas. */
.js .received__log[data-sequence] li {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}

.js .received__log[data-sequence] li.is-on {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   Blog: índice de revista (portada partida + lista con panel fijo)
   -------------------------------------------------------------------------- */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2.5rem;
}

.feature + .filters {
  margin-top: clamp(4rem, 10vh, 6rem);
}

/* En móvil, una sola línea que se desliza dentro de la tira y se desvanece en el borde. */
@media (max-width: 860px) {
  .filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    margin-inline: calc(var(--gutter) * -1);
    padding-inline: var(--gutter);
    scroll-padding-inline: var(--gutter);
    scrollbar-width: none;
    -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 3rem), transparent);
    mask-image: linear-gradient(to right, #000 calc(100% - 3rem), transparent);
  }

  .filters::-webkit-scrollbar {
    display: none;
  }

  .filters .pill {
    flex: none;
  }
}

.filters__status {
  margin-top: 1.5rem;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--bone-2);
}

.filters__status b {
  font-weight: 500;
  color: var(--bone);
}

.post-meta {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.post-meta b {
  font-weight: 500;
  color: var(--signal);
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: end;
  margin-top: clamp(3rem, 8vh, 5rem);
  color: var(--bone);
}

.feature__cover {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--ink-2);
}

.feature__cover--empty {
  border: 1px solid var(--hair-2);
}

.feature__body {
  display: grid;
  gap: 1rem;
}

.feature__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-block);
  line-height: 0.98;
  letter-spacing: -0.015em;
  text-wrap: balance;
  transition: color 0.2s var(--ease-out);
}

.feature__intro {
  max-width: 46ch;
  color: var(--bone-2);
  text-wrap: pretty;
}

@media (hover: hover) and (pointer: fine) {
  .feature:hover .feature__title {
    color: var(--signal);
  }
}

.blog-list {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(2rem, 4vw, 4rem);
  margin-top: clamp(3rem, 8vh, 5rem);
}

.filters + .blog-list,
.filters__status + .blog-list {
  margin-top: clamp(2rem, 5vh, 3rem);
}

.rows {
  border-top: 1px solid var(--hair-2);
}

.row {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr) 2rem;
  column-gap: 1.5rem;
  row-gap: 0.6rem;
  align-items: baseline;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--hair);
  color: var(--bone);
}

.row__num {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--bone-2);
}

.row__thumb {
  display: none;
}

.row__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-sub);
  line-height: 1.05;
  text-wrap: balance;
  overflow-wrap: anywhere;
  transition: color 0.2s var(--ease-out);
}

.row__arrow {
  justify-self: end;
  font-family: var(--f-mono);
  color: var(--bone-2);
  transition: transform 0.25s var(--ease-out), color 0.2s var(--ease-out);
}

.row__meta {
  grid-column: 2;
}

.row.is-current .row__title {
  color: var(--signal);
}

@media (hover: hover) and (pointer: fine) {
  .row:hover .row__title {
    color: var(--signal);
  }

  .row:hover .row__arrow {
    transform: translateX(6px);
    color: var(--signal);
  }
}

/* Panel fijo con la portada de la fila activa; sin JS no se muestra. */
.pane {
  position: sticky;
  top: calc(var(--header-h) + 2rem);
  align-self: start;
}

.pane[hidden] {
  display: none;
}

.pane__img,
.pane__empty {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--ink-2);
}

.pane__img[hidden],
.pane__empty[hidden] {
  display: none;
}

.pane__empty {
  display: flex;
  align-items: flex-end;
  padding: 1.25rem;
  border: 1px solid var(--hair-2);
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.pane__meta {
  display: block;
  margin-top: 1rem;
}

.blog-empty {
  margin-top: clamp(3rem, 8vh, 5rem);
}

.blog-empty .btn {
  margin-top: 2rem;
}

@media (max-width: 860px), (pointer: coarse) {
  .feature,
  .blog-list {
    grid-template-columns: 1fr;
  }

  .pane {
    display: none;
  }

  .row {
    grid-template-columns: 5.5rem minmax(0, 1fr);
    gap: 0.5rem 1rem;
    align-items: start;
  }

  .row__num,
  .row__arrow {
    display: none;
  }

  .row__thumb {
    display: block;
    grid-row: span 2;
    width: 5.5rem;
    height: 5.5rem;
    object-fit: cover;
  }

  .row__title,
  .row__meta {
    grid-column: 2;
  }
}

/* Fila sin portada en móvil: el título ocupa todo el ancho. */
@media (max-width: 860px), (pointer: coarse) {
  .row:not(:has(.row__thumb)) .row__title,
  .row:not(:has(.row__thumb)) .row__meta {
    grid-column: 1 / -1;
  }
}

/* --------------------------------------------------------------------------
   Blog: artículo en modo lectura
   -------------------------------------------------------------------------- */

.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 25;
  height: 2px;
  pointer-events: none;
}

.read-progress span {
  display: block;
  height: 100%;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left;
}

.article__head {
  max-width: 64rem;
}

.article__back {
  margin-bottom: 2.5rem;
}

.article__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
}

.article__title {
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-page);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--bone);
  text-wrap: balance;
  overflow-wrap: anywhere;
}

.article__intro {
  margin-top: 1.75rem;
  max-width: 52ch;
  font-size: clamp(1.15rem, 1.5vw, 1.45rem);
  line-height: 1.55;
  color: var(--bone-2);
  text-wrap: pretty;
}

.article__meta {
  margin-top: 1.25rem;
}

.article__cover {
  display: block;
  width: calc(100% + var(--gutter) * 2);
  max-width: none;
  height: auto;
  aspect-ratio: 21 / 9;
  margin: clamp(3rem, 8vh, 5rem) calc(var(--gutter) * -1) 0;
  object-fit: cover;
  background: var(--ink-2);
}

.article__layout {
  display: grid;
  /* 31rem ≈ 68 caracteres de Inter Tight a 18 px (medido): el ancho de lectura de la spec. */
  grid-template-columns: minmax(12rem, 1fr) minmax(0, 31rem) minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 4rem);
  margin-top: clamp(3.5rem, 9vh, 6rem);
}

.article__layout .prose {
  grid-column: 2;
}

/* Índice lateral: sticky en la columna izquierda; la sección en lectura, en señal. */
.toc {
  grid-column: 1;
  position: sticky;
  top: calc(var(--header-h) + 2rem);
  align-self: start;
  max-height: calc(100vh - var(--header-h) - 4rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.toc[hidden] {
  display: none;
}

.toc__title {
  margin-bottom: 1rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.toc__list {
  border-top: 1px solid var(--hair-2);
}

.toc__list a {
  display: grid;
  grid-template-columns: 2rem 1fr;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--hair);
  line-height: 1.45;
  color: var(--bone-2);
  transition: color 0.2s var(--ease-out);
}

.toc__list a span:first-child {
  color: var(--bone-2);
}

.toc__list a[aria-current='true'],
.toc__list a[aria-current='true'] span:first-child {
  color: var(--signal);
}

@media (hover: hover) {
  .toc__list a:hover {
    color: var(--bone);
  }
}

/* Cuerpo del artículo */
.prose {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--bone-2);
  overflow-wrap: break-word;
}

.prose > * + * {
  margin-top: 1.5em;
}

.prose p,
.prose li {
  text-wrap: pretty;
}

.prose strong {
  font-weight: 600;
  color: var(--bone);
}

.prose > h2 {
  margin-top: 1.9em;
  font-family: var(--f-display);
  font-weight: 400;
  /* Entre el título del artículo (--t-page) y el h3: cerca de la mitad del h1 en escritorio. */
  font-size: clamp(2rem, 3.6vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--bone);
  text-wrap: balance;
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.prose > h3 {
  margin-top: 2em;
  font-family: var(--f-sans);
  font-weight: 600;
  font-size: clamp(1.3rem, 1.9vw, 1.75rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.prose > h4 {
  margin-top: 2em;
  font-family: var(--f-mono);
  font-weight: 500;
  font-size: 0.8rem;
  line-height: 1.5;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.prose > h2 + *,
.prose > h3 + *,
.prose > h4 + * {
  margin-top: 0.9em;
}

.prose a {
  color: var(--bone);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--signal) 50%, transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  transition: color 0.2s var(--ease-out), text-decoration-color 0.2s var(--ease-out);
}

@media (hover: hover) {
  .prose a:hover {
    color: var(--signal);
    text-decoration-color: var(--signal);
  }
}

.prose ul > li,
.prose ol > li {
  position: relative;
  padding-left: 2rem;
}

.prose li + li {
  margin-top: 0.5em;
}

.prose ul > li::before {
  content: '>';
  position: absolute;
  left: 0.2rem;
  font-family: var(--f-mono);
  font-weight: 500;
  color: var(--signal);
}

.prose ol {
  counter-reset: prose-ol;
}

.prose ol > li {
  counter-increment: prose-ol;
}

.prose ol > li::before {
  content: counter(prose-ol, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-family: var(--f-mono);
  font-size: 0.8em;
  line-height: 2.2;
  color: var(--signal);
}

.prose blockquote {
  margin-block: 2em;
  padding-left: clamp(1.25rem, 2.5vw, 2rem);
  border-left: 1px solid var(--signal);
  font-family: var(--f-display);
  font-style: italic;
  font-size: clamp(1.6rem, 2.6vw, 2.3rem);
  line-height: 1.2;
  color: var(--bone);
}

.prose blockquote p + p {
  margin-top: 0.6em;
}

.prose code {
  padding: 0.12em 0.4em;
  border: 1px solid var(--hair-2);
  background: var(--ink-2);
  font-family: var(--f-mono);
  font-size: 0.86em;
  color: var(--bone);
  overflow-wrap: anywhere;
}

.prose pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--hair-2);
  background: var(--ink-2);
  font-size: 0.88rem;
  line-height: 1.6;
}

.prose pre code {
  padding: 0;
  border: 0;
  background: none;
  overflow-wrap: normal;
  white-space: pre;
}

.prose img {
  display: block;
  width: 100%;
  height: auto;
}

.prose figure {
  margin-block: 2.25em;
}

.prose figcaption {
  margin-top: 0.85rem;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--bone-2);
}

/* Las tablas del cuerpo se desplazan solas en pantallas angostas. */
.prose table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.prose th,
.prose td {
  padding: 0.7rem 1rem 0.7rem 0;
  border-bottom: 1px solid var(--hair);
  text-align: left;
  vertical-align: top;
}

.prose th {
  border-bottom-color: var(--hair-2);
  font-family: var(--f-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bone);
  white-space: nowrap;
}

.prose hr {
  height: 1px;
  margin-block: 3em;
  border: 0;
  background: var(--hair-2);
}

/* En escritorio, citas y figuras pueden salirse del ancho de lectura. */
@media (min-width: 1101px) {
  .prose blockquote,
  .prose figure {
    margin-left: -4rem;
    margin-right: -4rem;
  }

  .prose blockquote {
    padding-left: 3rem;
  }
}

/* Bloques del StreamField dentro del cuerpo */
.block-metrics {
  margin-block: 3em;
}

.block-metrics__title {
  font-family: var(--f-mono);
  font-weight: 400;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.block-metrics__grid {
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  margin-top: 1rem;
}

.metric__sub {
  display: block;
  margin-top: 0.3rem;
  text-transform: none;
  letter-spacing: 0.02em;
}

.block-cta {
  margin-block: 3em;
  padding: clamp(1.75rem, 4vw, 2.5rem) 0;
  border-block: 1px solid var(--hair-2);
}

.block-cta__badge {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
}

.block-cta__headline {
  margin-top: 0.9rem;
  font-family: var(--f-display);
  font-weight: 400;
  font-size: var(--t-sub);
  line-height: 1.05;
  color: var(--bone);
}

.block-cta__text {
  margin-top: 0.9rem;
}

.block-cta .btn {
  margin-top: 1.75rem;
}

.article__foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  max-width: 48rem;
  margin: clamp(4rem, 10vh, 6rem) auto 0;
  padding-top: 2.5rem;
  border-top: 1px solid var(--hair-2);
}

/* --------------------------------------------------------------------------
   Políticas de privacidad: artículo en modo lectura con preguntas desplegables
   -------------------------------------------------------------------------- */

/* Como en .page-head: el título grande con inicial necesita aire sobre el índice. */
.privacy .article__head > .chapter__index {
  margin-bottom: clamp(2.5rem, 5vh, 3.5rem);
}

/* Cada pregunta es un <details> nativo: se abre sin JS y la búsqueda del navegador
   encuentra el texto de las respuestas cerradas. */
.prose > .faq {
  border-bottom: 1px solid var(--hair);
}

.prose > .faq + .faq {
  margin-top: 0;
}

.prose > h2 + .faq {
  margin-top: 1.4em;
  border-top: 1px solid var(--hair-2);
}

.faq > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 1rem;
  gap: 1.25rem;
  align-items: baseline;
  padding: 1.1rem 0;
  list-style: none;
  font-weight: 500;
  line-height: 1.45;
  color: var(--bone);
  cursor: pointer;
  transition: color 0.2s var(--ease-out);
}

.faq > summary::-webkit-details-marker {
  display: none;
}

/* El "+" en señal gira a "×" al abrir. */
.faq > summary::after {
  content: '+';
  justify-self: end;
  font-family: var(--f-mono);
  font-weight: 400;
  color: var(--signal);
  transition: transform 0.2s var(--ease-out);
}

.faq[open] > summary::after {
  transform: rotate(45deg);
}

@media (hover: hover) {
  .faq > summary:hover {
    color: var(--signal);
  }
}

.faq__body {
  padding: 0 2.25rem 1.6rem 0;
}

.faq__body > * + * {
  margin-top: 1em;
}

.privacy__legal {
  padding-left: 1rem;
  border-left: 1px solid var(--hair-2);
  font-size: 0.92rem;
  line-height: 1.65;
}

@media (prefers-reduced-motion: reduce) {
  .faq > summary,
  .faq > summary::after {
    transition: none;
  }
}

@media (max-width: 1100px) {
  .article__layout {
    grid-template-columns: minmax(0, 31rem);
    justify-content: center;
  }

  .article__layout .prose {
    grid-column: 1;
  }

  .toc {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
  position: relative;
  z-index: 3;
  padding: 5rem var(--gutter) 2rem;
  background: var(--ink);
  border-top: 1px solid var(--hair);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
}

.footer__logo {
  display: inline-block;
  margin-bottom: 1.5rem;
  /* En gris: el logo del header es el protagonista; el del footer firma sin competir. */
  color: var(--mute);
  transition: color 0.25s var(--ease);
}

@media (hover: hover) {
  .footer__logo:hover {
    color: var(--bone);
  }
}

.footer__logo svg {
  width: 8rem;
  height: auto;
}

.footer__brand p {
  max-width: 38ch;
  color: var(--bone-2);
  font-size: 0.95rem;
}

.footer__tag {
  display: inline-block;
  margin-top: 1.5rem;
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
}

.footer__heading {
  margin-bottom: 1.1rem;
  font-family: var(--f-mono);
  font-weight: 400;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-2);
}

.footer__col li + li {
  margin-top: 0.55rem;
}

.footer__col li {
  font-size: 0.92rem;
  color: var(--bone-2);
}

.footer__col a {
  transition: color 0.25s var(--ease);
}

@media (hover: hover) {
  .footer__col a:hover {
    color: var(--bone);
  }
}

/* El mail de contacto es el enlace que importa: en señal, subrayado fino. */
.footer__col .footer__mail {
  color: var(--signal);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--signal) 40%, transparent);
  text-underline-offset: 0.25em;
  overflow-wrap: anywhere;
  transition: color 0.25s var(--ease), text-decoration-color 0.25s var(--ease);
}

@media (hover: hover) {
  .footer__col .footer__mail:hover {
    color: var(--signal);
    text-decoration-color: var(--signal);
  }
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--hair);
  font-family: var(--f-mono);
  /* 0.72rem: los enlaces de redes son texto funcional y no bajan de 11 px. */
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--bone-2);
}

.footer__social {
  display: flex;
  gap: 1.5rem;
}

@media (hover: hover) {
  .footer__social a:hover {
    color: var(--bone);
  }
}

/* --------------------------------------------------------------------------
   Pantallas medianas y chicas: la materia pasa al fondo, el texto al frente
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  :root {
    --header-h: 5rem;
  }

  .topbar__toggle {
    display: block;
  }

  .topbar__nav {
    position: fixed;
    inset: 0;
    z-index: -1;
    display: flex;
    align-items: flex-start;
    /* La lista arranca arriba, con aire bajo el logo. */
    padding: calc(var(--header-h) + 2.5rem) var(--gutter) var(--gutter);
    background: var(--ink);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--ease), visibility 0.3s;
  }

  .topbar__nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .topbar__nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.75rem;
  }

  .topbar__nav a {
    font-family: var(--f-display);
    font-size: 2rem;
    line-height: 1.15;
    letter-spacing: 0;
    text-transform: none;
  }

  /* En el menú a pantalla completa los enlaces van a la izquierda: el "^" también. */
  .topbar__nav a[aria-current='page']::after {
    top: calc(100% + 0.2rem);
    left: 0.05em;
    width: 1.4rem;
    height: 0.7rem;
    transform: none;
  }

  .topbar__nav .topbar__cta {
    margin-top: 1rem;
    font-family: var(--f-mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .chapter,
  .chapter--split {
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    gap: 2.5rem;
    min-height: 110svh;
  }

  .chapter--cta {
    min-height: 100svh;
  }

  .hero {
    justify-content: flex-end;
    min-height: 100svh;
  }

  .chapter__side,
  .hero .chapter__side--left,
  .hero .chapter__side--right,
  .chapter--cta .chapter__side {
    /* Un velo bajo el texto, de borde a borde: la materia sigue visible pero no compite.
       max-width: none anula el límite de escritorio, que recortaba el bloque a la derecha. */
    padding: 1.5rem var(--gutter);
    margin-inline: calc(var(--gutter) * -1);
    width: calc(100% + var(--gutter) * 2);
    max-width: none;
    background: radial-gradient(ellipse 90% 80% at 50% 50%, rgba(18, 18, 20, 0.78), rgba(18, 18, 20, 0.35) 70%, transparent);
  }

  .chapter__text {
    max-width: none;
  }

  /* En móvil la leyenda y la flecha de avance pisaban el texto: solo queda el "^"
     para volver arriba cuando entra el footer. */
  .stage-caption,
  .next-chapter:not(.is-top) {
    display: none;
  }

  /* El "^" va abajo a la derecha: centrado pisaba los enlaces de redes del footer. */
  .next-chapter.is-top {
    left: auto;
    right: calc(var(--gutter) - 1rem);
    bottom: calc(0.5rem + env(safe-area-inset-bottom, 0px));
    margin: 0;
    transform: rotate(180deg);
  }
}

@media (max-width: 560px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .actions .btn {
    width: 100%;
    justify-content: space-between;
  }
}

/* --------------------------------------------------------------------------
   Movimiento reducido: sin bucles decorativos ni desplazamientos de revelado
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .logo-char,
  .next-chapter svg {
    animation: none;
  }

  .js-ready .hero__title .line > span {
    transform: none;
  }
}