/* =========================================================================
   Ox México — OXIDE direction
   Cochinilla rojo + Azul maya · base crema · tinta cálida
   ========================================================================= */
:root {
  /* canvas — LIGHT (default) */
  --paper:    #F4EEDC;    /* crema cálida, parchment */
  --paper-2:  #EBE3CC;    /* banding */
  --mist:     #D9CCAB;    /* warm sand borders */
  --mist-2:   #C8B98E;    /* stronger border */
  --ink:      #1A140E;    /* warm black */
  --ink-2:    #2A1F14;    /* secondary dark */
  --slate:    #4A3E2C;    /* warm secondary text */
  --stone:    #8C7448;    /* tertiary / meta */

  /* paleta azteca */
  --cochineal:    #B23A1F;   /* rojo cochinilla — bloque + acento principal */
  --cochineal-d:  #8C2A12;   /* hover / pressed */
  --cochineal-l:  #D85A3A;   /* hover lift */
  --maya:         #137A9C;   /* azul maya — más vibrante */
  --maya-d:       #0E5C77;
  --maya-l:       #2A9CC1;
  --jade:         #1F5A3A;   /* utility only (success, optional) */
  --brass:        #D4A646;   /* pulso de status */

  /* semantic surfaces — independientes del esquema base */
  --surface-emph:    var(--ink);    /* fondos oscuros enfáticos (service--featured, featured-reason) */
  --on-emph:         var(--paper);  /* texto sobre --surface-emph */
  --on-emph-soft:    rgba(244,238,220,0.85);
  --on-emph-quiet:   rgba(244,238,220,0.6);
  --on-emph-line:    rgba(244,238,220,0.18);
  --on-emph-grid:    rgba(244,238,220,0.045);

  /* type */
  --sans: 'Geist', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* layout */
  --gutter: clamp(20px, 4vw, 56px);
  --max:    1440px;
  --rail:   1px;

  color-scheme: light;
}

/* =========================================================================
   DARK theme — OXIDE noche
   Paleta carbón cálido + cochinilla/maya luminosos. Mantiene warmth mexica.
   Aplica si el usuario tiene prefers-color-scheme:dark y NO forzó light,
   o si forzó explícitamente data-theme="dark".
   ========================================================================= */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:    #1A1410;    /* carbón cálido — inversión del ink */
    --paper-2:  #231B14;    /* banding elevado */
    --mist:     #3A2E20;    /* warm dark border */
    --mist-2:   #54422E;    /* stronger dark border */
    --ink:      #F0E6D0;    /* tinta crema — texto principal */
    --ink-2:    #E0D4B8;    /* secondary text */
    --slate:    #C2B392;    /* warm secondary */
    --stone:    #9C8A66;    /* tertiary / meta */

    --cochineal:    #D04A2A;   /* +luminosidad para contraste en dark */
    --cochineal-d:  #B23A1F;   /* el original es ahora el "pressed" */
    --cochineal-l:  #E76A48;
    --maya:         #2EA8CC;   /* +luminosidad para contraste */
    --maya-d:       #137A9C;
    --maya-l:       #5BC4E2;
    --jade:         #3A8C5E;
    --brass:        #E6BC5C;

    --surface-emph:    #0E0906;   /* aún más oscuro que paper, jerarquía preservada */
    --on-emph:         #F0E6D0;
    --on-emph-soft:    rgba(240,230,208,0.85);
    --on-emph-quiet:   rgba(240,230,208,0.6);
    --on-emph-line:    rgba(240,230,208,0.16);
    --on-emph-grid:    rgba(240,230,208,0.04);

    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --paper:    #1A1410;
  --paper-2:  #231B14;
  --mist:     #3A2E20;
  --mist-2:   #54422E;
  --ink:      #F0E6D0;
  --ink-2:    #E0D4B8;
  --slate:    #C2B392;
  --stone:    #9C8A66;

  --cochineal:    #D04A2A;
  --cochineal-d:  #B23A1F;
  --cochineal-l:  #E76A48;
  --maya:         #2EA8CC;
  --maya-d:       #137A9C;
  --maya-l:       #5BC4E2;
  --jade:         #3A8C5E;
  --brass:        #E6BC5C;

  --surface-emph:    #0E0906;
  --on-emph:         #F0E6D0;
  --on-emph-soft:    rgba(240,230,208,0.85);
  --on-emph-quiet:   rgba(240,230,208,0.6);
  --on-emph-line:    rgba(240,230,208,0.16);
  --on-emph-grid:    rgba(240,230,208,0.04);

  color-scheme: dark;
}

* { box-sizing: border-box; min-width: 0; }
html { -webkit-text-size-adjust: 100%; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  font-feature-settings: "ss01" 1, "cv11" 1;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg { max-width: 100%; }
body {
  background-image: linear-gradient(180deg, var(--paper) 0%, var(--paper) 80%, var(--paper-2) 100%);
  background-attachment: fixed;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }

.wrap { max-width: var(--max); margin: 0 auto; padding-inline: var(--gutter); }

.mono { font-family: var(--mono); font-weight: 500; letter-spacing: 0.02em; }
.meta {
  font-family: var(--mono); font-weight: 500;
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--stone);
}
.rule { height: 1px; background: var(--mist); border: 0; }

/* =========================================================================
   Nav
   ========================================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.nav.scrolled { border-bottom-color: var(--mist); }
.nav__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.nav__brand { flex: 0 0 auto; display: flex; align-items: center; gap: 12px; }
.nav__brand span { white-space: nowrap; }
.nav__links { display: flex; align-items: center; gap: 28px; }
.nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  position: relative;
  padding: 6px 0;
}
.nav__links a::after {
  content: '';
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--maya);
  transition: right .25s ease;
}
.nav__links a:hover::after { right: 0; }

/* --- Buttons ----------------------------------------------------------- */
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  background: var(--cochineal);
  color: var(--on-emph);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.005em;
  border-radius: 2px;
  white-space: nowrap;
  transition: background .15s ease, transform .15s ease;
  position: relative;
}
.btn-cta:hover {
  background: var(--cochineal-d);
  transform: translateY(-1px);
}
.btn-cta .arrow { transition: transform .2s ease; }
.btn-cta:hover .arrow { transform: translateX(3px); }

.btn-cta--ink {
  background: var(--surface-emph);
  color: var(--on-emph);
}
.btn-cta--ink:hover { background: color-mix(in srgb, var(--surface-emph) 80%, #000); }

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
  border-bottom: 1.5px solid var(--maya);
  transition: border-color .15s ease, color .15s ease;
}
.btn-text:hover { color: var(--maya); }

/* --- Theme toggle ------------------------------------------------------ */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 4px;
  color: var(--ink);
  transition: background .15s ease, color .15s ease;
  flex: 0 0 auto;
}
.theme-toggle:hover { background: var(--mist); color: var(--cochineal); }
.theme-toggle__icon { display: none; }
:root[data-theme="light"] .theme-toggle__icon--moon { display: block; }
:root[data-theme="dark"]  .theme-toggle__icon--sun  { display: block; }
/* Fallback (sin data-theme): respeta prefers-color-scheme */
:root:not([data-theme]) .theme-toggle__icon--moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-toggle__icon--moon { display: none; }
  :root:not([data-theme]) .theme-toggle__icon--sun  { display: block; }
}

.theme-toggle--mnav {
  width: auto;
  height: auto;
  padding: 18px 0;
  gap: 12px;
  justify-content: flex-start;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.025em;
  border-top: 1px solid var(--mist);
  border-radius: 0;
  margin-top: 16px;
}
.theme-toggle--mnav:hover { background: transparent; color: var(--cochineal); }
.theme-toggle--mnav .theme-toggle__icon { width: 26px; height: 26px; }
.theme-toggle--mnav .theme-toggle__label::before { content: 'Modo oscuro'; }
:root[data-theme="dark"] .theme-toggle--mnav .theme-toggle__label::before { content: 'Modo claro'; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-toggle--mnav .theme-toggle__label::before { content: 'Modo claro'; }
}
/* English labels */
:root[lang="en"] .theme-toggle--mnav .theme-toggle__label::before { content: 'Dark mode'; }
:root[lang="en"][data-theme="dark"] .theme-toggle--mnav .theme-toggle__label::before { content: 'Light mode'; }
@media (prefers-color-scheme: dark) {
  :root[lang="en"]:not([data-theme]) .theme-toggle--mnav .theme-toggle__label::before { content: 'Light mode'; }
}

/* --- Language toggle -------------------------------------------------- */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
  flex: 0 0 auto;
}
.lang-toggle__current { color: var(--ink); }
.lang-toggle__sep { opacity: 0.4; }
.lang-toggle__alt {
  color: var(--stone);
  transition: color .15s ease;
}
.lang-toggle__alt:hover { color: var(--maya); }

.lang-toggle--mnav {
  margin-top: 8px;
  padding: 18px 0;
  font-size: 16px;
  letter-spacing: 0.18em;
  gap: 10px;
  border-top: 1px solid var(--mist);
  justify-content: flex-start;
  width: 100%;
}

.nav__burger {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border-radius: 4px;
}
.nav__burger:hover { background: var(--mist); }
.nav__burger span {
  display: block; width: 18px; height: 1.5px; background: var(--ink);
  position: relative;
}
.nav__burger span::before, .nav__burger span::after {
  content: ''; position: absolute; left: 0; width: 100%; height: 1.5px; background: var(--ink);
  transition: transform .2s ease;
}
.nav__burger span::before { top: -6px; }
.nav__burger span::after  { top:  6px; }
.nav__burger[aria-expanded="true"] span { background: transparent; }
.nav__burger[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span::after  { transform: translateY(-6px) rotate(-45deg); }

.mnav {
  position: fixed;
  inset: 72px 0 0 0;
  background: var(--paper);
  border-top: 1px solid var(--mist);
  padding: 32px var(--gutter);
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 25;
}
.mnav.open { opacity: 1; transform: none; pointer-events: auto; }
.mnav a { display: block; font-size: 28px; font-weight: 700; letter-spacing: -0.025em; padding: 18px 0; border-bottom: 1px solid var(--mist); }
.mnav a:last-of-type { border-bottom: 0; }
.mnav .btn-cta { margin-top: 24px; width: 100%; justify-content: center; padding-block: 16px; font-size: 14px; }

/* =========================================================================
   Hero
   ========================================================================= */
.hero {
  position: relative;
  padding-block: clamp(40px, 6vw, 80px) 0;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: stretch;
}

.hero__left {
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 2.2vw, 32px);
  padding-bottom: clamp(48px, 6vw, 88px);
}

.hero__topmeta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.hero__topmeta .status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
  white-space: nowrap;
}
.hero__topmeta .meta { white-space: nowrap; }
.hero__topmeta .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--brass);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--brass) 22%, transparent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--brass) 22%, transparent); }
  50%      { box-shadow: 0 0 0 10px color-mix(in srgb, var(--brass) 0%, transparent); }
}

.hero__h1 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(48px, 8vw, 116px);
  line-height: 0.94;
  letter-spacing: -0.045em;
  margin: 0;
  text-wrap: balance;
  max-width: 13ch;
  color: var(--ink);
}
.hero__h1 .accent {
  color: var(--cochineal);
  white-space: nowrap;
}

.hero__sub {
  font-size: clamp(17px, 1.4vw, 20px);
  line-height: 1.5;
  color: var(--slate);
  max-width: 54ch;
  margin: 0;
  font-weight: 400;
  text-wrap: pretty;
}
.hero__sub strong { color: var(--ink); font-weight: 500; }

.hero__ctas {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  margin-top: 4px;
}

/* --- Right block (Oxide) ---------------------------------------------- */
.hero__block {
  position: relative;
  background: var(--cochineal);
  color: var(--on-emph);
  display: flex;
  flex-direction: column;
  padding: clamp(24px, 2vw, 32px) clamp(24px, 2vw, 32px) 0;
  overflow: hidden;
  align-self: stretch;
  min-height: 480px;
}
.hero__block::before {
  /* subtle grid overlay */
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244,238,220,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,238,220,0.045) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.bhead {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(244,238,220,0.75);
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(244,238,220,0.18);
}
.bhead .bhead-dot {
  display: inline-block;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--brass);
  margin-right: 8px;
  vertical-align: 1px;
}

.bmid {
  position: relative;
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: end;
  padding-block: clamp(20px, 3vw, 36px);
}
.bnum {
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(140px, 18vw, 240px);
  line-height: 0.82;
  letter-spacing: -0.07em;
  color: var(--on-emph);
  margin: 0;
  font-feature-settings: "ss01" 1;
}
.bnum sup {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  vertical-align: super;
  margin-left: 8px;
  color: rgba(244,238,220,0.7);
  text-transform: uppercase;
}

/* Maya numeral (3 bars = 15) — pure geometry */
.bmaya {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding-bottom: 28px;
  align-items: flex-end;
}
.bmaya .bar {
  width: 52px;
  height: 9px;
  background: var(--on-emph);
  border-radius: 2px;
}
.bmaya-label {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(244,238,220,0.6);
  text-align: right;
}

.blabel {
  position: relative;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.45;
  color: rgba(244,238,220,0.9);
  max-width: 26ch;
  padding-block: 4px 18px;
}
.blabel strong { color: var(--on-emph); font-weight: 600; }

.bfoot {
  position: relative;
  margin-top: auto;
  padding-top: 14px;
}
.bfoot .greca-row { display: block; line-height: 0; }
.bfoot .greca-row svg { display: block; }
.bfoot-text {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(244,238,220,0.7);
}

/* =========================================================================
   Facts strip
   ========================================================================= */
.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--mist);
  border-bottom: 1px solid var(--mist);
  margin-top: clamp(32px, 4vw, 56px);
}
.fact { padding: 28px 0; position: relative; }
.fact + .fact { border-left: 1px solid var(--mist); padding-left: 24px; }
.fact .fk {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--stone);
}
.fact .fv {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700; letter-spacing: -0.025em; margin-top: 6px; line-height: 1.1;
  color: var(--ink);
}
.fact .fv .unit {
  font-family: var(--mono); font-weight: 500;
  font-size: 0.5em; color: var(--cochineal);
  letter-spacing: 0; vertical-align: 0.2em; margin-left: 4px;
}
.fact .fn { font-size: 13px; color: var(--slate); margin-top: 6px; }

/* =========================================================================
   Section header — patrón compartido por todas las secciones
   ========================================================================= */
.section {
  padding-block: clamp(48px, 6vw, 88px);
}
.section--alt { background: linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%); }

.s-header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
  margin-bottom: clamp(24px, 3.5vw, 40px);
  padding-bottom: 18px;
  border-bottom: 2px solid var(--maya);
}
.s-header__left { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; }
.s-header__num {
  font-family: var(--mono);
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 600;
  color: var(--maya);
  letter-spacing: 0.02em;
}
.s-header__slash { color: var(--mist-2); font-family: var(--mono); font-size: 18px; font-weight: 500; }
.s-header__title {
  font-family: var(--sans);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--ink);
}
.s-header__meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
  white-space: nowrap;
}

.s-intro {
  font-family: var(--sans);
  font-size: clamp(28px, 4.2vw, 56px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--ink);
  max-width: 22ch;
  margin: 0 0 clamp(28px, 4vw, 48px);
  text-wrap: balance;
}
.s-intro .accent { color: var(--cochineal); }
.s-intro .quiet { color: var(--slate); font-weight: 500; }

/* =========================================================================
   [01] El problema — grid 2×2 compacto (estilo principios)
   ========================================================================= */
.problem-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 4vw, 64px) clamp(40px, 5vw, 88px);
}

.problem {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 0;
  border: 0;
  position: relative;
}
.problem:hover .problem__bars .bar { background: var(--cochineal); }

.problem__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--mist);
  flex-wrap: wrap;
}
.problem__num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--maya);
  letter-spacing: 0.04em;
}
.problem__tag {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--stone);
  padding: 0;
  border: 0;
}
.problem__bars {
  display: flex;
  gap: 4px;
  margin-left: auto;
}
.problem__bars .bar {
  width: 16px;
  height: 4px;
  background: var(--mist-2);
  border-radius: 1px;
  transition: background .2s ease;
}
.problem__bars .bar.on { background: var(--cochineal); }

.problem__title {
  font-family: var(--sans);
  font-size: clamp(22px, 2.2vw, 28px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
  max-width: 24ch;
}
.problem__desc {
  font-size: 15px;
  line-height: 1.55;
  color: var(--slate);
  margin: 0;
  max-width: 48ch;
}
.problem__desc strong { color: var(--ink); font-weight: 500; }

.scenario {
  margin-top: 4px;
  padding: 14px 16px;
  background: var(--paper-2);
  border-left: 3px solid var(--maya);
  position: relative;
}
.scenario__label {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--maya);
  margin-bottom: 6px;
}
.scenario__text {
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  color: var(--slate);
  margin: 0;
  font-style: italic;
}
.scenario__text::before { content: '“'; margin-right: 2px; color: var(--maya); font-style: normal; }
.scenario__text::after  { content: '”'; margin-left: 2px;  color: var(--maya); font-style: normal; }

/* Bridge entre secciones — botón centrado, cochinilla */
.section__bridge {
  display: flex;
  justify-content: center;
  margin-top: clamp(40px, 5vw, 72px);
}
.section__bridge-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: clamp(300px, 38%, 500px);
  padding: 24px 28px 22px;
  background: var(--cochineal);
  color: var(--on-emph);
  border-radius: 3px;
  text-align: center;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
  position: relative;
  overflow: hidden;
}
.section__bridge-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244,238,220,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,238,220,0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}
.section__bridge-btn:hover {
  background: var(--cochineal-d);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(178,58,31,0.25);
}
.section__bridge-btn:hover .section__bridge-arrow { transform: translateY(3px); }
.section__bridge-meta {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(244,238,220,0.65);
  position: relative;
  white-space: nowrap;
}
.section__bridge-title {
  font-family: var(--sans);
  font-size: clamp(22px, 2.2vw, 28px);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--on-emph);
  margin: 0;
  line-height: 1.05;
  position: relative;
}
.section__bridge-arrow {
  margin-top: 6px;
  font-size: 18px;
  color: var(--on-emph);
  opacity: 0.75;
  transition: transform .2s ease;
  position: relative;
  line-height: 1;
}

@media (max-width: 720px) {
  .problem { grid-template-columns: 1fr; gap: 18px; }
  .problem__index { flex-direction: row; align-items: center; gap: 14px; }
  .problem__tag { border: 0; padding: 0; }
  .problem__bars { margin-top: 0; margin-left: auto; }
  .s-header { grid-template-columns: 1fr; }
  .s-header__meta { justify-self: start; }
}
.tease { padding-block: clamp(48px, 6vw, 96px); }
.tease__head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; margin-bottom: 32px; flex-wrap: wrap;
}
.tease__head .meta { color: var(--stone); }
.tease__head .right { font-family: var(--mono); font-size: 12px; color: var(--stone); }
.tease__list { display: flex; flex-direction: column; }
.tease__row {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 24px;
  align-items: baseline;
  padding: 24px 0;
  border-top: 1px solid var(--mist);
  color: var(--ink);
}
.tease__row:last-of-type { border-bottom: 1px solid var(--mist); }
.tease__row .num {
  font-family: var(--mono); font-size: 12px;
  color: var(--maya); letter-spacing: 0.04em;
}
.tease__row .title {
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 700; letter-spacing: -0.025em;
}
.tease__row .status {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--stone);
}

/* =========================================================================
   [02] El método — fases + principios
   ========================================================================= */
.phases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--mist-2);
  border-bottom: 1px solid var(--mist-2);
  margin-bottom: clamp(48px, 6vw, 80px);
}
.phase {
  padding: clamp(28px, 3.5vw, 44px) clamp(20px, 2.2vw, 32px) clamp(28px, 3.5vw, 44px) 0;
  display: flex; flex-direction: column; gap: 12px;
  position: relative;
}
.phase + .phase {
  border-left: 1px solid var(--mist);
  padding-left: clamp(24px, 2.6vw, 36px);
}
.phase__num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--maya);
  font-weight: 600;
}
.phase__title {
  font-family: var(--sans);
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0;
  color: var(--ink);
}
.phase__desc {
  font-size: 15px;
  line-height: 1.5;
  color: var(--slate);
  margin: 0;
  max-width: 40ch;
}
.phase__duration {
  margin-top: auto;
  padding-top: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
}
.phase__duration .arrow { color: var(--cochineal); font-weight: 600; margin-right: 4px; }

.principles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(28px, 3.5vw, 56px) clamp(40px, 5vw, 88px);
}
.principle { display: flex; flex-direction: column; gap: 8px; max-width: 50ch; }
.principle__num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--maya);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.principle__title {
  font-family: var(--sans);
  font-size: clamp(20px, 1.8vw, 24px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}
.principle__desc {
  font-size: 15px;
  line-height: 1.55;
  color: var(--slate);
  margin: 0;
}
.principle__desc strong { color: var(--ink); font-weight: 500; }

/* =========================================================================
   [03] Servicios — 3 cards
   ========================================================================= */
.services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto auto auto 1fr auto auto 1fr auto;
  column-gap: clamp(16px, 1.5vw, 24px);
  row-gap: 0;
}
.service {
  background: var(--paper);
  border: 1px solid var(--mist);
  border-radius: 3px;
  padding: clamp(24px, 2.4vw, 36px);
  display: grid;
  grid-row: 1 / -1;
  grid-template-rows: subgrid;
  row-gap: 18px;
  position: relative;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.service:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(26,20,14,0.06);
  border-color: var(--mist-2);
}
.service--featured {
  background: var(--surface-emph);
  border-color: var(--surface-emph);
  color: var(--on-emph);
}
.service--featured .service__num,
.service--featured .service__title,
.service--featured .service__price-val,
.service--featured .service__meta-val { color: var(--on-emph); }
.service--featured .service__tag,
.service--featured .service__list li,
.service--featured .service__meta-key,
.service--featured .service__sub { color: var(--on-emph-soft); }
.service--featured .service__list li::before { background: var(--cochineal); }
.service--featured .service__divider { background: var(--on-emph-line); }
.service--featured .btn-cta { background: var(--cochineal); color: var(--on-emph); }
.service--featured .btn-cta:hover { background: var(--cochineal-d); }

.service__badge {
  position: absolute;
  top: -1px; left: -1px;
  background: var(--cochineal);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 0 0 3px 0;
  white-space: nowrap;
}
.service__num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--maya);
  letter-spacing: 0.04em;
}
.service__title {
  font-family: var(--sans);
  font-size: clamp(24px, 2.2vw, 30px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0;
  color: var(--ink);
}
.service__sub {
  font-size: 15px;
  line-height: 1.45;
  color: var(--slate);
  margin: 0;
  font-weight: 400;
}
.service__divider {
  height: 1px;
  background: var(--mist);
  margin: 4px 0;
}
.service__tag {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
  margin-bottom: 4px;
}
.service__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.service__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--slate);
}
.service__list li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 10px; height: 3px;
  background: var(--maya);
}
.service__meta { display: flex; flex-direction: column; gap: 10px; }
.service__meta-row {
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px;
  min-height: 28px;
}
.service__meta-key {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
  white-space: nowrap;
  flex: 0 0 auto;
}
.service__meta-val {
  font-size: 14px; font-weight: 500; color: var(--ink); text-align: right;
  white-space: nowrap;
}
/* Service: investment level bars (Baja / Media / Alta) */
.service__level {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  flex: 0 0 auto;
}
.service__level-bars {
  display: flex;
  gap: 3px;
}
.service__level-bars .bar {
  width: 18px;
  height: 6px;
  background: var(--mist-2);
  border-radius: 1px;
}
.service__level-bars .bar.on { background: var(--cochineal); }
.service--featured .service__level-bars .bar { background: var(--on-emph-line); }
.service--featured .service__level-bars .bar.on { background: var(--cochineal); }
.service__level-label {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.service--featured .service__level-label { color: var(--on-emph); }
.service__ideal {
  font-size: 13px;
  line-height: 1.5;
  color: var(--slate);
  font-style: italic;
  padding: 14px 14px;
  background: var(--paper-2);
  border-left: 3px solid var(--maya);
  align-self: stretch;
  margin: 0;
}
.service--featured .service__ideal {
  background: color-mix(in srgb, var(--on-emph) 6%, transparent);
  border-left-color: var(--cochineal);
  color: var(--on-emph-soft);
}
.service .btn-cta { width: 100%; justify-content: center; align-self: end; }

/* =========================================================================
   [04] Edgar Alarcón — about / credibilidad
   ========================================================================= */
.about {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: clamp(32px, 4vw, 72px);
  align-items: start;
}
.about__left { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 96px; }
.about__photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  background: var(--paper-2);
  border: 1px dashed var(--mist-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--stone);
  position: relative;
  overflow: hidden;
}
.about__photo::before {
  content: '';
  position: absolute; inset: 12px;
  border: 1px solid var(--mist);
  pointer-events: none;
}
/* Cuando hay imagen, ocultamos el placeholder visual y dejamos solo la foto */
.about__photo--has-image {
  background: var(--paper-2);
  border-style: solid;
  border-color: var(--mist);
}
.about__photo--has-image::before { display: none; }
.about__photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}
.about__photo-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--stone);
  position: relative;
}
.about__photo-hint {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--stone);
  opacity: 0.7;
  position: relative;
}
.about__card { background: var(--paper); border: 1px solid var(--mist); padding: 18px 20px; }
.about__card-row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding-block: 8px;
  font-size: 13px;
}
.about__card-row + .about__card-row { border-top: 1px solid var(--mist); }
.about__card-key {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
}
.about__card-val { font-weight: 500; color: var(--ink); }

.about__right { display: flex; flex-direction: column; gap: clamp(24px, 3vw, 36px); }
.about__bio {
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.55;
  color: var(--ink);
  margin: 0;
  max-width: 60ch;
  text-wrap: pretty;
}
.about__bio strong { color: var(--ink); font-weight: 600; }
.about__bio-quiet { color: var(--slate); font-weight: 400; font-size: 17px; }

.differentials { display: flex; flex-direction: column; gap: clamp(20px, 2.4vw, 28px); margin-top: 8px; }
.differential {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-top: 1px solid var(--mist);
}
.differential:last-child { border-bottom: 1px solid var(--mist); }
.differential__num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--maya);
  letter-spacing: 0.04em;
}
.differential__title {
  font-family: var(--sans);
  font-size: clamp(18px, 1.6vw, 22px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 6px;
  color: var(--ink);
}
.differential__desc { font-size: 15px; line-height: 1.55; color: var(--slate); margin: 0; }

/* =========================================================================
   [05] Resultados — case studies
   ========================================================================= */
.results-note {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
  margin-bottom: clamp(24px, 3vw, 40px);
  padding-left: 14px;
  border-left: 2px solid var(--maya);
}
.cases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 1.5vw, 24px);
}
.case {
  background: var(--paper);
  border: 1px solid var(--mist);
  padding: clamp(24px, 2.4vw, 32px);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.case__sector {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cochineal);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--mist);
}
.case__block { display: flex; flex-direction: column; gap: 6px; }
.case__label {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--stone);
}
.case__text {
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--slate);
  margin: 0;
}
.case__result {
  margin-top: auto;
  padding: 16px;
  background: var(--paper-2);
  border-left: 2px solid var(--cochineal);
}
.case__result .case__label { color: var(--cochineal); }
.case__result-text {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
  margin: 6px 0 0;
}

/* =========================================================================
   [05] Resultados comprobados — featured + 3 razones
   ========================================================================= */
.featured-reason {
  position: relative;
  background: var(--surface-emph);
  color: var(--on-emph);
  padding: clamp(32px, 4vw, 56px);
  margin-bottom: clamp(40px, 5vw, 72px);
  overflow: hidden;
}
.featured-reason::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--on-emph-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--on-emph-grid) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.featured-reason__meta {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--on-emph-line);
}
.featured-reason__num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cochineal-l);
}
.featured-reason__tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-emph-quiet);
}
.featured-reason__title {
  position: relative;
  font-family: var(--sans);
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.02;
  margin: 0 0 20px;
  max-width: 24ch;
  color: var(--on-emph);
  text-wrap: balance;
}
.featured-reason__title .accent { color: var(--cochineal-l); }
.featured-reason__desc {
  position: relative;
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.6;
  color: var(--on-emph-soft);
  margin: 0;
  max-width: 64ch;
}
.featured-reason__desc strong { color: var(--on-emph); font-weight: 500; }
.featured-reason__points {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--on-emph-line);
}
.featured-reason__point {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--on-emph-soft);
}
.featured-reason__point .marker { color: var(--cochineal-l); margin-right: 8px; }

/* Tools strip — wordmarks de AI stack en la base del bloque */
.featured-reason__tools {
  position: relative;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--on-emph-line);
}
.featured-reason__tools-label {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--on-emph-quiet);
  margin-bottom: 14px;
}
.featured-reason__tools-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  font-family: var(--sans);
}
.tool {
  font-size: clamp(15px, 1.4vw, 18px);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--on-emph-soft);
  transition: color .2s ease;
}
.tool:hover { color: var(--on-emph); }
.tool-sep {
  color: var(--maya-l);
  font-weight: 700;
  font-size: clamp(14px, 1.2vw, 16px);
  opacity: 0.6;
  user-select: none;
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.4vw, 36px);
}
.reason {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 22px;
  border-top: 2px solid var(--ink);
}
.reason__num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--maya);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.reason__title {
  font-family: var(--sans);
  font-size: clamp(18px, 1.6vw, 22px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}
.reason__desc {
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--slate);
  margin: 0;
}

/* =========================================================================
   [06] Contacto — cierre full-bleed cochinilla
   ========================================================================= */
.contact {
  position: relative;
  background: var(--cochineal);
  color: var(--on-emph);
  padding-block: clamp(80px, 11vw, 160px);
  overflow: hidden;
}
.contact::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(244,238,220,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,238,220,0.045) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.contact__inner { position: relative; max-width: 1100px; margin: 0 auto; padding-inline: var(--gutter); text-align: left; }
.contact__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  padding-bottom: clamp(32px, 4vw, 56px);
  margin-bottom: clamp(32px, 4vw, 56px);
  border-bottom: 1px solid rgba(244,238,220,0.2);
  flex-wrap: wrap;
}
.contact__num {
  font-family: var(--mono);
  font-size: clamp(20px, 2vw, 28px);
  font-weight: 600;
  color: rgba(244,238,220,0.85);
}
.contact__head-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(244,238,220,0.65);
}
.contact__h2 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(40px, 6.5vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin: 0 0 clamp(20px, 2.4vw, 32px);
  color: var(--on-emph);
  text-wrap: balance;
  max-width: 18ch;
}
.contact__sub {
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.5;
  color: rgba(244,238,220,0.88);
  margin: 0 0 clamp(36px, 4vw, 52px);
  max-width: 52ch;
  font-weight: 400;
}

/* 3 "doors" cards inside cochineal — grid 1 / 1 / 2 (card 3 ocupa la mitad) */
.contact__doors {
  display: grid;
  grid-template-columns: 1fr 1fr 2fr;
  gap: clamp(14px, 1.5vw, 20px);
  margin-bottom: clamp(40px, 5vw, 60px);
}
.door {
  /* Mantiene jerarquía visual sobre fondo cochinilla en ambos temas:
     en dark elevamos la card a paper-2 + un borde sutil, en light queda crema. */
  background: var(--paper);
  color: var(--ink);
  border: 1px solid transparent;
  padding: clamp(22px, 2.2vw, 32px);
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease;
  position: relative;
  overflow: hidden;
}
.door:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.18);
}
.door:hover .door__cta .arrow { transform: translateX(4px); }
.door__num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--maya);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.door__title {
  font-family: var(--sans);
  font-size: clamp(20px, 1.9vw, 24px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}
.door__desc {
  font-size: 14px;
  line-height: 1.5;
  color: var(--slate);
  margin: 0;
  flex: 1;
}
.door__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--mist);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--cochineal);
}
.door__cta .arrow { transition: transform .2s ease; }

/* Wide door: bullet list of "what you'll understand" */
.door__points {
  list-style: none;
  padding: 0;
  margin: 4px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.door__points li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--slate);
}
.door__points li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 10px; height: 3px;
  background: var(--maya);
}
.contact__greca { margin-top: clamp(56px, 6vw, 80px); opacity: 0.4; }
.contact__signature {
  margin-top: 20px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(244,238,220,0.55);
}

/* =========================================================================
   Footer expandido
   ========================================================================= */
.foot {
  padding-block: clamp(48px, 6vw, 80px) 32px;
  background: var(--paper-2);
  border-top: 1px solid var(--mist);
}
.foot__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: clamp(24px, 3vw, 48px);
  margin-bottom: clamp(40px, 5vw, 64px);
  align-items: start;
}
.foot__brand p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--slate);
  margin: 16px 0 0;
  max-width: 32ch;
}
.foot__col-title {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--stone);
  margin-bottom: 14px;
}
.foot__col { display: flex; flex-direction: column; gap: 8px; }
.foot__col a {
  font-size: 14px;
  color: var(--slate);
  transition: color .15s ease;
}
.foot__col a:hover { color: var(--ink); }
.foot__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--mist);
  flex-wrap: wrap;
  gap: 12px;
}
.foot .copyr {
  font-family: var(--mono); font-size: 11px;
  color: var(--stone); letter-spacing: 0.06em; text-transform: uppercase;
}
.foot .greca-strip { flex-basis: 100%; margin-top: 16px; opacity: 0.7; }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 1100px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__block { min-height: 420px; }
  .bnum { font-size: clamp(120px, 28vw, 200px); }
  .services, .cases { grid-template-columns: 1fr; }
  /* Subgrid en services rompe el stack en mobile — lo deshacemos */
  .services { grid-template-rows: none; row-gap: 18px; }
  .service {
    grid-row: auto;
    grid-template-rows: none;
    display: flex;
    flex-direction: column;
    gap: 18px;
  }
  .about { grid-template-columns: 1fr; }
  .about__left { position: static; }
  .about__photo { aspect-ratio: 3 / 2; }
  .reasons-grid { grid-template-columns: 1fr; }
  .contact__doors { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .facts { grid-template-columns: repeat(2, 1fr); }
  .fact + .fact { padding-left: 24px; }
  .fact:nth-child(3) { border-left: 0; padding-left: 0; border-top: 1px solid var(--mist); }
  .fact:nth-child(4) { border-top: 1px solid var(--mist); }
  .phases { grid-template-columns: 1fr; }
  .phase + .phase { border-left: 0; border-top: 1px solid var(--mist); padding-left: 0; padding-top: 28px; }
  .principles { grid-template-columns: 1fr; }
  .problem-list { grid-template-columns: 1fr; }
  .foot__top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav__links { display: none; }
  .nav__cta-desktop { display: none; }
  .nav .lang-toggle:not(.lang-toggle--mnav) { display: none; }
  .nav .theme-toggle:not(.theme-toggle--mnav) { display: none; }
  .nav__burger { display: inline-flex; }
  .hero__h1 { font-size: clamp(40px, 11vw, 64px); letter-spacing: -0.035em; word-break: break-word; hyphens: auto; }
  .hero__h1 .accent { white-space: normal; }
  .hero__sub { font-size: 17px; }
  .hero__block { min-height: auto; padding: 24px 22px 0; }
  .bmid { grid-template-columns: 1fr auto; gap: 12px; padding-block: 18px; }
  .bnum { font-size: clamp(88px, 26vw, 140px); }
  .bmaya { padding-bottom: 10px; }
  .bmaya .bar { width: 28px; height: 5px; }
  .bmaya > div > div[style*="border-radius:50%"] { width: 7px !important; height: 7px !important; }
  .blabel { max-width: 100%; }
  .section__bridge-btn { width: 100%; }
  .featured-reason { padding: 24px 22px; }
  .featured-reason__title { font-size: clamp(26px, 8vw, 36px); }
  .contact__doors { gap: 14px; }
  .door { padding: 22px 20px; }
  .tease__row { grid-template-columns: 56px 1fr; gap: 16px; }
  .tease__row .status { grid-column: 2; padding-top: 4px; }
  .foot__top { grid-template-columns: 1fr; }
  .contact__h2 { font-size: clamp(36px, 9vw, 56px); }
  /* Asegurar que la nav no se rompa por el wordmark expandido */
  .nav__brand span { font-size: 14px; }
}

/* =========================================================================
   Animations — solo cuando JS cargó y prefers-reduced-motion lo permite.
   Si JS no carga o el usuario tiene reduced-motion, todo se ve estático.
   ========================================================================= */
@media (prefers-reduced-motion: no-preference) {

  /* Reveal on scroll — JS marca elementos con .reveal cuando están fuera del fold */
  :root.js .reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .75s cubic-bezier(0.16, 1, 0.3, 1),
                transform .75s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
  }
  :root.js .reveal.in-view {
    opacity: 1;
    transform: none;
  }

  /* Cascade dentro de grids — un pequeño stagger entre items hermanos */
  :root.js .problem-list .problem.reveal:nth-child(2),
  :root.js .principles .principle.reveal:nth-child(2),
  :root.js .services .service.reveal:nth-child(2),
  :root.js .reasons-grid .reason.reveal:nth-child(2),
  :root.js .differentials .differential.reveal:nth-child(2),
  :root.js .contact__doors .door.reveal:nth-child(2) { transition-delay: .08s; }
  :root.js .problem-list .problem.reveal:nth-child(3),
  :root.js .principles .principle.reveal:nth-child(3),
  :root.js .services .service.reveal:nth-child(3),
  :root.js .reasons-grid .reason.reveal:nth-child(3),
  :root.js .differentials .differential.reveal:nth-child(3),
  :root.js .contact__doors .door.reveal:nth-child(3) { transition-delay: .16s; }
  :root.js .problem-list .problem.reveal:nth-child(4) { transition-delay: .24s; }

  /* Barras: inician como "off" (mist-2) y se llenan con cascada cuando el
     contenedor entra al viewport (clase .in-view la pone el observer). */
  :root.js .problem__bars .bar.on,
  :root.js .service__level-bars .bar.on {
    background: var(--mist-2);
    transition: background .45s cubic-bezier(0.16, 1, 0.3, 1);
  }
  :root.js .problem__bars.in-view .bar.on,
  :root.js .service__level-bars.in-view .bar.on { background: var(--cochineal); }
  :root.js .service--featured .service__level-bars .bar.on { background: var(--on-emph-line); }
  :root.js .service--featured .service__level-bars.in-view .bar.on { background: var(--cochineal); }

  :root.js .problem__bars .bar.on:nth-child(1),
  :root.js .service__level-bars .bar.on:nth-child(1) { transition-delay: 0s; }
  :root.js .problem__bars .bar.on:nth-child(2),
  :root.js .service__level-bars .bar.on:nth-child(2) { transition-delay: .08s; }
  :root.js .problem__bars .bar.on:nth-child(3),
  :root.js .service__level-bars .bar.on:nth-child(3) { transition-delay: .16s; }
  :root.js .problem__bars .bar.on:nth-child(4) { transition-delay: .24s; }
}

/* Marquee infinito del stack AI — JS clona el track */
:root.js .featured-reason__tools-list.is-marquee {
  overflow: hidden;
  position: relative;
  flex-wrap: nowrap;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 6%, #000 94%, transparent 100%);
          mask-image: linear-gradient(90deg, transparent 0%, #000 6%, #000 94%, transparent 100%);
}
:root.js .featured-reason__tools-list.is-marquee .tools-track {
  display: inline-flex;
  align-items: center;
  gap: 6px 14px;
  white-space: nowrap;
  flex-shrink: 0;
  padding-right: 14px;
}
@media (prefers-reduced-motion: no-preference) {
  :root.js .featured-reason__tools-list.is-marquee .tools-track {
    animation: marquee 32s linear infinite;
  }
  :root.js .featured-reason__tools-list.is-marquee:hover .tools-track {
    animation-play-state: paused;
  }
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Cursor glow sobre bloques cochinilla — JS setea --mx/--my con mousemove */
.hero__block, .contact { --mx: 50%; --my: 50%; }
:root.js .hero__block::after,
:root.js .contact::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(420px circle at var(--mx) var(--my),
              rgba(244,238,220,0.13), transparent 55%);
  pointer-events: none;
  opacity: 0;
  transition: opacity .3s ease;
  z-index: 1;
}
:root.js .hero__block:hover::after,
:root.js .contact:hover::after { opacity: 1; }
/* Mantener contenido por encima del glow */
:root.js .hero__block > *,
:root.js .contact__inner { position: relative; z-index: 2; }