/* =============================================================
   CONSULTHINK — Strategy Think Consulting Consulthink S.A.
   Arquetipo 05: Mouse-Reactive Gradient
   Paleta tomada del logo: azul marino de fondo, dorado como único
   acento de interfaz (igual que la flecha del isotipo).
   ============================================================= */

/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg:        #070B12;
  --bg-2:      #0D1420;
  --bg-3:      #141D2C;
  --ink:       #F4F1EA;
  --mute:      #9DA7B4;
  --dim:       #64707E;
  --line:      rgba(244, 241, 234, 0.13);
  --line-soft: rgba(244, 241, 234, 0.06);

  --accent:    #C9A961;
  --accent-dk: #A88940;
  --accent-ink:#070B12;

  --blue:      #1B4E8E;
  --blue-lt:   #2E90D6;

  --grad-1:    #1B4E8E;
  --grad-2:    #C9A961;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  --wrap: 1180px;
  --nav-h: 68px;

  /* ---------------------------------------------------------
     Escala tipográfica. Un solo sistema, cinco pasos.
     Los tres títulos de nivel de sección (section-title, stat-n
     y contact-mail) comparten EXACTAMENTE --fs-display: esa es
     la simetría. El hero es el único que sube de ahí.
     --------------------------------------------------------- */
  /* 4.8vw, no 5.4: justo en 960 px el hero pasa a dos columnas y la columna
     izquierda cae a ~450 px de golpe, mientras el titular todavia medía 52 px.
     "Sin corazonadas." no cabía y se partía en dos. Si se sube este número hay
     que volver a medir el tramo 960–1100 px. */
  --fs-hero:    clamp(2.15rem, 4.8vw, 3.75rem);   /*  34 → 60 px */
  --fs-display: clamp(1.9rem,  3.3vw, 2.5rem);    /*  30 → 40 px */
  --fs-title:   clamp(1.15rem, 1.9vw, 1.55rem);   /*  18 → 25 px */
  --fs-lead:    clamp(1.12rem, 1.6vw, 1.35rem);   /*  18 → 22 px */
  --fs-body:    1.0625rem;                        /*       17 px */
  --fs-sm:      0.875rem;                         /*       14 px */
  --fs-xs:      0.78rem;                          /*     12.5 px */
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  tab-size: 2;
  overflow-x: clip;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 20px);
  color-scheme: dark;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--fs-body);
  line-height: 1.65;
  overflow-x: clip;
  overscroll-behavior-y: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; line-height: 1.02; letter-spacing: -0.03em; font-weight: 800; }
::selection { background: var(--accent); color: var(--accent-ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =============================================================
   3. Utilidades
   ============================================================= */
.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}

.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem;
  background: var(--accent); color: var(--accent-ink);
  z-index: 9999; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

.kicker {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.6rem;
}

/* =============================================================
   4. Fondo reactivo al cursor (efecto firma)
   ============================================================= */
.bg-gradient {
  position: fixed;
  inset: -20%;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(circle 560px at var(--mx, 50%) var(--my, 34%),
      color-mix(in srgb, var(--grad-1) 42%, transparent) 0%, transparent 62%),
    radial-gradient(circle 720px at calc(var(--mx, 50%) + 12%) calc(var(--my, 34%) + 14%),
      color-mix(in srgb, var(--grad-2) 15%, transparent) 0%, transparent 60%),
    var(--bg);
  filter: blur(48px);
}

/* Sin soporte de color-mix: gradientes con alfa fija */
@supports not (background: color-mix(in srgb, red 10%, transparent)) {
  .bg-gradient {
    background:
      radial-gradient(circle 560px at var(--mx, 50%) var(--my, 34%), rgba(27,78,142,.42) 0%, transparent 62%),
      radial-gradient(circle 720px at calc(var(--mx, 50%) + 12%) calc(var(--my, 34%) + 14%), rgba(201,169,97,.15) 0%, transparent 60%),
      var(--bg);
  }
}

/* En táctil no hay cursor: deriva lenta para que no quede muerto */
.bg-gradient.is-drifting { animation: gradDrift 26s var(--ease-soft) infinite alternate; }
@keyframes gradDrift {
  0%   { --mx: 24%; --my: 22%; }
  100% { --mx: 76%; --my: 58%; }
}
@property --mx { syntax: "<percentage>"; inherits: true; initial-value: 50%; }
@property --my { syntax: "<percentage>"; inherits: true; initial-value: 34%; }

.bg-grain {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  opacity: .045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* =============================================================
   5. Navegación
   ============================================================= */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(7, 11, 18,0);
  border-bottom: 1px solid transparent;
  transition: background .3s var(--ease-out), border-color .3s var(--ease-out);
}
.nav.is-stuck {
  background: rgba(7, 11, 18,.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line-soft);
}
@supports not (backdrop-filter: blur(4px)) {
  .nav.is-stuck { background: rgba(7, 11, 18,.96); }
}

.nav-inner { display: flex; align-items: center; gap: 1.5rem; width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }

.logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-right: auto;
}
.logo-mark {
  width: 38px; height: 38px;
  flex: none;
  transition: transform .4s var(--ease-out);
}
@media (hover: hover) and (pointer: fine) {
  .logo:hover .logo-mark { transform: rotate(-8deg) scale(1.05); }
}
.logo-text {
  display: grid;
  font-family: var(--sans);
  font-weight: 700;
  font-size: .82rem;
  line-height: 1.04;
  letter-spacing: .04em;
  color: var(--ink);
}
.logo-text sup {
  font-size: .48em;
  vertical-align: super;
  color: var(--dim);
  margin-left: .1em;
}

/* Sin menú hamburguesa a propósito: la página tiene un solo objetivo y en
   móvil el desplegable tapaba el titular. Queda logo + el único CTA. */
.nav-links { display: none; gap: 1.75rem; font-family: var(--mono); font-size: var(--fs-xs); }
@media (min-width: 540px) { .nav-links { display: flex; } }
.nav-links a { color: var(--mute); transition: color .2s var(--ease-out); }
.nav-links a:hover { color: var(--ink); }

.nav-cta { padding: .58rem 1rem; font-size: .74rem; }

/* =============================================================
   6. Botones
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .5rem;
  font-family: var(--mono); font-weight: 700; font-size: .82rem;
  letter-spacing: .01em;
  padding: .78rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform .25s var(--ease-out), background .25s var(--ease-out),
              color .25s var(--ease-out), border-color .25s var(--ease-out);
}
.btn-lg { padding: 1rem 1.9rem; font-size: .92rem; }

.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-accent:hover { background: var(--ink); transform: translateY(-2px); }

.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* =============================================================
   7. Hero
   ============================================================= */
.hero {
  min-height: 100vh;
  min-height: 100svh;
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 3.5rem) 0 4rem;
}

/* El hero a pantalla completa solo funciona en pantallas apaisadas o casi
   cuadradas. En un viewport muy vertical —un móvil con "sitio para
   computadoras" activado (980 x 2100), una tablet en vertical— el contenido
   mide 480 px dentro de un hero de 2100 y `align-items: center` lo deja
   flotando con 735 px de negro encima y 779 debajo. Medido, no estimado.
   Por debajo de 3/4 de proporción se ancla arriba y el hero mide lo que mide
   su contenido. */
@media (max-aspect-ratio: 3 / 4) {
  .hero { min-height: 0; align-items: flex-start; }
}

/* Dos columnas para que la mitad derecha no quede vacía */
.hero-grid { display: grid; gap: 2.8rem; }
@media (min-width: 960px) {
  .hero-grid { grid-template-columns: 1.08fr .92fr; align-items: center; gap: 4.5rem; }
}

.hero-panel {
  border: 1px solid var(--line);
  background: rgba(13, 20, 32, .5);
  padding: 1.5rem 1.4rem 1.3rem;
}
@supports (backdrop-filter: blur(4px)) {
  .hero-panel { backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
}
.hero-panel-h {
  font-family: var(--mono); font-size: var(--fs-xs);
  letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent);
}
.hero-panel-list { list-style: none; margin: 1.1rem 0 0; padding: 0; }
.hero-panel-list li {
  display: flex; align-items: baseline; gap: .9rem;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--mono); font-size: var(--fs-sm);
  line-height: 1.35;
}
.hero-panel-list li:last-child { border-bottom: 0; }
/* El relleno vive en los hijos, no en el <li>: asi el area tocable del enlace
   ocupa la fila entera (~42 px) y no solo la altura del texto (19 px). */
.hero-panel-list .n,
.hero-panel-list a { padding: .72rem 0; }
.hero-panel-list .n { color: var(--dim); font-size: var(--fs-xs); flex: none; }
.hero-panel-list a { flex: 1; }
.hero-panel-list a { transition: color .2s var(--ease-out); }
.hero-panel-list a:hover { color: var(--accent); }
.hero-panel-f {
  margin-top: 1.1rem; padding-top: 1rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--mono); font-size: var(--fs-xs);
  letter-spacing: .04em; color: var(--dim);
}

/* max-width: 16ch es el limite real del titular. Las lineas del <h1> van
   partidas a mano en el HTML; si alguna pasa de 16 caracteres, esta regla la
   vuelve a partir sola y aparece una linea huerfana. Medir antes de cambiar
   el copy. */
.hero-title {
  font-family: var(--mono);
  font-size: var(--fs-hero);
  line-height: 1.06;
  letter-spacing: -.04em;
  max-width: 16ch;
  margin-bottom: 1.7rem;
}
.hero-title em {
  font-style: normal;
  color: var(--accent);
}

.hero-sub {
  font-size: var(--fs-lead);
  color: var(--mute);
  max-width: 48ch;
  margin-bottom: 2.2rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 2.2rem; }

.hero-foot {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  letter-spacing: .06em;
  color: var(--dim);
}

/* =============================================================
   8. Secciones
   ============================================================= */
.section { padding: clamp(4.5rem, 11vw, 9rem) 0; }

.section-title {
  font-family: var(--mono);
  font-size: var(--fs-display);
  letter-spacing: -.035em;
  margin-bottom: .6rem;
  display: inline-block;
  padding: 0 .12em;
  transition: background .25s var(--ease-out), color .25s var(--ease-out);
}
/* Efecto: invertir el titular gigante al pasar el cursor */
@media (hover: hover) and (pointer: fine) {
  .invertible:hover { background: var(--accent); color: var(--accent-ink); }
}

.section-note {
  font-family: var(--mono);
  font-size: var(--fs-sm);
  letter-spacing: .04em;
  color: var(--dim);
  margin-bottom: 3rem;
}

.manifesto { padding-block: clamp(3rem, 8vw, 6rem); }
/* Texto e imagen en la misma fila: antes iban uno debajo del otro y
   dejaban media pantalla vacía a la derecha. */
.manifesto-grid { display: grid; gap: 2.5rem; }
@media (min-width: 960px) {
  .manifesto-grid { grid-template-columns: 1fr 1fr; align-items: center; gap: 4.5rem; }
}
.lead {
  font-size: var(--fs-lead);
  line-height: 1.6;
  max-width: 44ch;
  color: var(--ink);
}

/* =============================================================
   8b. Imágenes — duotono azul para que no peleen con la paleta.
   El arquetipo 05 es tipográfico: la foto acompaña, no manda.
   ============================================================= */
.pic {
  position: relative;
  isolation: isolate;          /* el blend se queda dentro de la figura */
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: var(--bg-2);
}
.pic img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.12) brightness(.74);
  transition: filter .6s var(--ease-out), transform .9s var(--ease-out);
}
.pic::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: var(--blue);
  mix-blend-mode: color;
  opacity: .68;
  pointer-events: none;
  transition: opacity .6s var(--ease-out);
}
.pic::before {
  content: ""; position: absolute; inset: 0; z-index: 2;
  background: linear-gradient(180deg, rgba(7,11,18,.28) 0%, transparent 45%, rgba(7,11,18,.72) 100%);
  pointer-events: none;
}
@media (hover: hover) and (pointer: fine) {
  .pic:hover img { filter: grayscale(.5) contrast(1.06) brightness(.95); transform: scale(1.035); }
  .pic:hover::after { opacity: .34; }
}

/* La foto no puede pesar más que el texto: la banda se limita al mismo
   ancho de lectura que el párrafo y su pie sube a 14 px. Antes eran
   1180 px de imagen contra un pie de 11,8 px. */
.band { margin: 0; }
.band .pic { aspect-ratio: 16 / 10; }
.band figcaption {
  margin-top: .9rem;
  font-family: var(--mono); font-size: var(--fs-sm);
  letter-spacing: .04em; color: var(--dim);
}
@media (min-width: 960px) { .band .pic { aspect-ratio: 4 / 3; } }

.mosaic { display: grid; gap: 1rem; margin-top: 2.8rem; }
.mosaic .pic { aspect-ratio: 3 / 2; }
.mosaic figcaption {
  position: absolute; left: 1rem; bottom: .8rem; z-index: 3;
  font-family: var(--mono); font-size: var(--fs-xs);
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent);
}
@media (min-width: 720px) { .mosaic { grid-template-columns: repeat(3, 1fr); } }

/* =============================================================
   9. Filas de servicios (acordeón)
   ============================================================= */
.rows { border-top: 1px solid var(--line); }
.row { border-bottom: 1px solid var(--line); }

.row-head {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas: "num name icon" ". meta meta";
  align-items: center;
  gap: .35rem 1rem;
  padding: 1.5rem .25rem;
  text-align: left;
  transition: color .25s var(--ease-out), padding-left .3s var(--ease-out);
}
@media (hover: hover) and (pointer: fine) {
  .row-head:hover { padding-left: 1rem; color: var(--accent); }
}

.row-num {
  grid-area: num;
  font-family: var(--mono); font-size: var(--fs-xs); font-weight: 700;
  color: var(--dim);
}
.row-name {
  grid-area: name;
  font-family: var(--mono); font-weight: 700;
  font-size: var(--fs-title);
  letter-spacing: -.025em;
  line-height: 1.2;
}
.row-meta {
  grid-area: meta;
  font-family: var(--mono); font-size: .72rem;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--dim);
}
.row-icon {
  grid-area: icon;
  width: 22px; height: 22px; position: relative; flex: none;
}
.row-icon::before, .row-icon::after {
  content: ""; position: absolute; inset: 50% 0 auto 0;
  height: 2px; background: currentColor; border-radius: 2px;
  transform: translateY(-50%);
  transition: transform .3s var(--ease-out), opacity .2s;
}
.row-icon::after { transform: translateY(-50%) rotate(90deg); }
.row-head[aria-expanded="true"] .row-icon::after { transform: translateY(-50%) rotate(0deg); opacity: 0; }
.row-head[aria-expanded="true"] { color: var(--accent); }

.row-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .42s var(--ease-out);
}
.row-panel.is-open { grid-template-rows: 1fr; }
.row-panel-in { overflow: hidden; }
.row-panel.is-open .row-panel-in { padding-bottom: 1.9rem; }

.row-panel p { color: var(--mute); max-width: 66ch; font-size: var(--fs-sm); line-height: 1.65; }
.row-panel ul {
  margin: 1rem 0 0; padding-left: 1.1rem; color: var(--mute);
  max-width: 66ch; font-size: var(--fs-sm);
}
.row-panel li { margin-bottom: .3rem; }
.row-price {
  margin-top: 1.2rem;
  font-family: var(--mono); font-size: var(--fs-sm);
  color: var(--accent) !important;
  letter-spacing: .04em;
}

/* Sin JS el acordeón queda abierto: el contenido nunca se pierde */
.no-js .row-panel { grid-template-rows: 1fr; }
.no-js .row-panel .row-panel-in { padding-bottom: 1.9rem; }

/* =============================================================
   10. Números
   ============================================================= */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem 2rem;
  margin-top: 2.5rem;
}
.stat { border-top: 1px solid var(--line); padding-top: 1.2rem; }
.stat-n {
  display: block;
  font-family: var(--mono); font-weight: 800;
  font-size: var(--fs-display);
  letter-spacing: -.035em;
  line-height: 1;
  color: var(--accent);
  margin-bottom: .5rem;
}
.stat-l { color: var(--mute); font-size: var(--fs-sm); line-height: 1.55; }

/* =============================================================
   11. Proceso
   ============================================================= */
.steps { display: grid; gap: 2.5rem; margin-top: 2.5rem; }
.step { border-top: 1px solid var(--line); padding-top: 1.2rem; }
.step-n {
  font-family: var(--mono); font-size: var(--fs-xs); font-weight: 700;
  color: var(--accent); letter-spacing: .1em;
}
.step h3 {
  font-family: var(--mono);
  font-size: var(--fs-title);
  letter-spacing: -.025em;
  margin: .7rem 0 .6rem;
}
.step p { color: var(--mute); font-size: var(--fs-sm); line-height: 1.6; }

/* =============================================================
   12. Contacto
   ============================================================= */
.contact-mail {
  font-family: var(--mono);
  font-size: clamp(1.35rem, 3.3vw, 2.5rem);   /* = --fs-display salvo en móvil, donde el correo es largo */
  letter-spacing: -.035em;
  margin-bottom: 2.2rem;
  word-break: break-word;
}
.ul-anim { position: relative; }
.ul-anim::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -.08em;
  height: .06em; background: var(--accent);
  transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--ease-out);
}
.ul-anim:hover::after, .ul-anim:focus-visible::after { transform: scaleX(1); transform-origin: left; }

.contact-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: 2rem; }
.contact-note { color: var(--mute); max-width: 56ch; font-size: var(--fs-sm); line-height: 1.65; }

.contact-address {
  display: block;
  margin-top: 3rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  font-style: normal;
  font-family: var(--mono);
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--ink);
}
.contact-address-l {
  display: block;
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .7rem;
}

/* =============================================================
   13. Pie
   ============================================================= */
.foot { border-top: 1px solid var(--line-soft); padding: 2.5rem 0 3rem; }
.foot-inner {
  display: flex; flex-wrap: wrap; gap: .6rem 2rem;
  justify-content: space-between;
  font-family: var(--mono); font-size: var(--fs-xs); color: var(--dim);
}
.foot-tag { color: var(--accent); font-style: italic; }

/* Créditos de imagen: obligatorios por licencia, pero deliberadamente discretos
   — informan sin competir con nada. */
.foot-credits {
  margin-top: 1.4rem; padding-top: 1.1rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--mono); font-size: var(--fs-xs);
  color: var(--dim); opacity: .72; line-height: 1.7;
}
.foot-credits a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.foot-credits a:hover { color: var(--ink); }

/* =============================================================
   14. Reveals
   ============================================================= */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.reveal.is-revealed { opacity: 1; transform: none; }

/* Defensa obligatoria (gotcha A.4.5): un elemento con .reveal Y data-split
   nunca puede quedarse invisible. Esta regla gana por orden de declaración. */
.reveal[data-split] { opacity: 1; transform: none; }

/* Sin JS todo se ve igual */
.no-js .reveal { opacity: 1; transform: none; }

/* =============================================================
   15. Responsive
   ============================================================= */
/* Movil estrecho: los dos botones del hero a ancho completo. Apilados con
   anchos distintos (255 px y 182 px) el borde derecho quedaba dentado y leia
   como un fallo de maquetacion, no como una decision. */
@media (max-width: 479px) {
  .hero-actions { display: grid; gap: .8rem; }
  .hero-actions .btn { width: 100%; }
}

@media (min-width: 720px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
  .row-head {
    grid-template-columns: 4rem 1fr auto auto;
    grid-template-areas: "num name meta icon";
    gap: 1.5rem;
    padding: 1.9rem .25rem;
  }
}

@media (min-width: 960px) {
  .nav-links { display: flex; }
  .nav-cta { padding: .78rem 1.35rem; font-size: .82rem; }
  .stat-grid { grid-template-columns: repeat(3, 1fr); }
}

/* =============================================================
   16. Reduced-motion — solo lo genuinamente intrusivo.
   NO se desactivan hovers, reveals, count-up ni el gradiente:
   Windows trae esta preferencia activada de fábrica en muchos equipos
   y apagarlo todo deja la página muerta (gotcha A.2).
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .bg-gradient.is-drifting { animation: none; }
}