/* ==========================================================================
   Visión Digital SpA — "De la fricción al flujo"
   Experiencia digital conceptual: la interfaz enacta la propia promesa de
   marca (eliminar fricción operacional) transformando tipografía, líneas y
   composición de un estado quebrado/desalineado hacia uno fluido y continuo.
   ========================================================================== */

:root {
  /* --- Paleta (extraída de data-base/*.png + copy real de old2) --- */
  --ink: #12181F;
  --ink-soft: #1B242D;
  --paper: #FAF8F4;
  --paper-dim: #F1ECE4;
  --orange: #EA4A12;
  --orange-light: #FF7A33;
  --ember: #C42D0A;
  --muted: #5B6672;
  --muted-dark: rgba(250, 248, 244, 0.64);
  --line: rgba(18, 24, 31, 0.12);
  --line-dark: rgba(255, 255, 255, 0.14);

  --flow-gradient: linear-gradient(135deg, var(--orange), var(--orange-light));
  --flow-gradient-deep: linear-gradient(135deg, var(--orange), var(--ember));

  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;

  --container: 1180px;
  --gap-section: clamp(72px, 10vw, 148px);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-flow: cubic-bezier(.16, .84, .32, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
button { font-family: inherit; background: none; border: none; cursor: pointer; }
img { display: block; max-width: 100%; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

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

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: var(--paper);
  padding: 12px 20px; z-index: 999; font-weight: 600;
}
.skip-link:focus { left: 12px; top: 12px; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
section[id] { scroll-margin-top: 72px; }

/* Subtle print-grain texture on the ink bands — tactile, not decorative-tech */
.noise-layer {
  position: fixed; inset: 0; pointer-events: none; z-index: 1; opacity: 0.035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%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");
}

/* ---------- Type ---------- */
.eyebrow {
  font-family: var(--font-display);
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.16em;
  color: var(--ember); margin-bottom: 14px; text-transform: uppercase;
}
/* On dark bands, --ember reads too close to the background: swap for the
   lighter accent so the small uppercase label still clears AA contrast. */
.stage-resultado .eyebrow { color: var(--orange-light); }
.stage-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  font-weight: 600; letter-spacing: -0.01em; line-height: 1.15;
  color: var(--ink); max-width: 16ch;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px; justify-content: center;
  padding: 16px 30px; border-radius: 999px; font-weight: 600; font-size: 0.96rem;
  font-family: var(--font-display);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; transition: transform 0.25s var(--ease); }
/* Ink-on-orange (not white-on-orange) is the contrast fix here: pure
   --orange behind white text falls short of AA at this button's size. */
.btn-primary { background: var(--orange); color: var(--ink); box-shadow: 0 10px 22px -8px rgba(234, 74, 18, 0.55); }
.btn-primary:hover { background: var(--ember); color: var(--paper); transform: translateY(-2px); }
.btn-dark { background: var(--ink); color: var(--paper); box-shadow: 0 14px 30px -12px rgba(18, 24, 31, 0.45); }
.btn-dark:hover { background: #0a0e13; transform: translateY(-2px); }
.btn-dark:hover svg { transform: translateX(4px); }
.btn-sm { padding: 10px 20px; font-size: 0.86rem; }
.btn-lg { padding: 20px 38px; font-size: 1.02rem; margin-top: 40px; }

/* ==========================================================================
   NAV
   ========================================================================== */
.scroll-progress {
  position: absolute; top: 0; left: 0; height: 2px; width: 0%;
  background: var(--flow-gradient); z-index: 2;
  transition: width 0.1s linear;
}
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
  /* Default: the nav overlays the dark opening stage, so its tokens start
     light-on-dark; .is-scrolled (any section past the opening) flips them
     to dark-on-light once the header grows its own solid backing. */
  --nav-fg: var(--paper);
  --nav-fg-dim: var(--muted-dark);
  --nav-border: var(--line-dark);
  --nav-accent: var(--orange-light);
}
.site-nav.is-scrolled {
  background: rgba(250, 248, 244, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--line);
  --nav-fg: var(--ink);
  --nav-fg-dim: var(--muted);
  --nav-border: var(--line);
  --nav-accent: var(--ember);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 24px; max-width: var(--container); margin: 0 auto; padding: 0 24px;
}

.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark { transition: transform 0.3s var(--ease-flow); }
.brand:hover .brand-mark { transform: translateX(3px); }
.brand-word { font-family: var(--font-display); font-weight: 500; font-size: 1.05rem; color: var(--nav-fg); transition: color 0.3s ease; }
.brand-accent { color: var(--nav-accent); font-weight: 600; transition: color 0.3s ease; }

.stage-nav { display: flex; gap: clamp(10px, 1.6vw, 26px); }
.stage-link {
  font-family: var(--font-display);
  display: flex; align-items: center; gap: 6px;
  font-size: 0.82rem; font-weight: 500; color: var(--nav-fg-dim);
  padding: 6px 0; position: relative; transition: color 0.2s ease;
}
.stage-index { color: var(--nav-border); font-size: 0.72rem; transition: color 0.2s ease; }
.stage-link::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px;
  background: var(--orange); transition: right 0.3s var(--ease-flow);
}
.stage-link:hover, .stage-link.is-active { color: var(--nav-fg); }
.stage-link.is-active .stage-index { color: var(--nav-accent); }
.stage-link:hover::after, .stage-link.is-active::after { right: 0; }

.nav-actions { display: flex; align-items: center; gap: 22px; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 36px; height: 36px; padding: 0;
}
.nav-toggle span { display: block; height: 2px; width: 100%; background: var(--nav-fg); border-radius: 2px; transition: transform 0.3s var(--ease-flow), opacity 0.2s ease, background 0.3s ease; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

.mobile-nav {
  position: fixed; inset: 0; z-index: 95; background: var(--ink);
  display: flex; flex-direction: column; justify-content: space-between; padding: 100px 28px 40px;
  transform: translateX(100%); transition: transform 0.4s var(--ease-flow);
}
.mobile-nav.is-open { transform: translateX(0); }
.mobile-nav nav { display: flex; flex-direction: column; gap: 6px; }
.mobile-nav a {
  font-family: var(--font-display); font-size: 1.7rem; font-weight: 500; color: var(--paper);
  padding: 14px 0; border-bottom: 1px solid var(--line-dark); display: flex; gap: 14px; align-items: baseline;
}
.mobile-nav a span { font-size: 0.9rem; color: var(--orange); }

.mobile-nav-footer { display: flex; flex-direction: column; gap: 24px; }
/* ".mobile-nav a" (class+element) outranks a single class, so every
   property here has to be re-stated on the same "a.mobile-nav-clients"
   selector or it silently loses the cascade to the plain nav-link rule. */
.mobile-nav a.mobile-nav-clients {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; box-sizing: border-box; padding: 17px 24px; border-radius: 999px; border-bottom: none;
  background: var(--orange); color: var(--ink);
  font-family: var(--font-display); font-size: 0.98rem; font-weight: 600; text-align: center;
  box-shadow: 0 10px 22px -8px rgba(234, 74, 18, 0.55);
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.mobile-nav a.mobile-nav-clients:hover { background: var(--ember); color: var(--paper); transform: translateY(-2px); }
.mobile-nav-contact { display: flex; flex-direction: column; gap: 10px; }
.mobile-nav-contact a { color: var(--muted-dark); font-size: 0.95rem; font-weight: 600; }

@media (max-width: 980px) {
  .stage-nav { display: none; }
  .nav-actions .btn { display: none; }
  .nav-toggle { display: flex; }
}

body.nav-open { overflow: hidden; }

/* ==========================================================================
   STAGE LAYOUT (shared)
   ========================================================================== */
.stage { position: relative; padding: var(--gap-section) 0; }

/* ==========================================================================
   01 · OPENING — declaración de principios (no-hero)
   ========================================================================== */
.stage-opening {
  min-height: 100svh; display: flex; align-items: center;
  background: var(--ink); color: var(--paper); overflow: hidden;
  padding-top: 120px; padding-bottom: 80px;
}
.opening-frame { max-width: var(--container); margin: 0 auto; padding: 0 24px; width: 100%; }

.opening-kicker {
  font-family: var(--font-display); font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.05em; color: var(--muted-dark); margin-bottom: 34px;
}
.opening-kicker span { color: var(--orange); margin: 0 2px; }

.opening-statement {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2.6rem, 10vw, 7.2rem);
  line-height: 0.98; letter-spacing: -0.02em; text-transform: uppercase;
  display: flex; flex-wrap: wrap; align-items: center; gap: clamp(14px, 2.4vw, 34px);
}

.word-friccion { display: inline-flex; color: rgba(250, 248, 244, 0.82); }
.word-friccion .letter {
  display: inline-block;
  animation: jitter 5.2s ease-in-out infinite alternate;
  will-change: transform;
}
.word-friccion .letter:nth-child(1) { animation-delay: 0s;    transform: rotate(-2deg) translate(-1px, 1px); }
.word-friccion .letter:nth-child(2) { animation-delay: .35s;  transform: rotate(2deg) translate(1px, -2px); }
.word-friccion .letter:nth-child(3) { animation-delay: .1s;   transform: rotate(-1deg) translate(0, 2px); }
.word-friccion .letter:nth-child(4) { animation-delay: .5s;   transform: rotate(3deg) translate(-2px, -1px); }
.word-friccion .letter:nth-child(5) { animation-delay: .2s;   transform: rotate(-3deg) translate(1px, 1px); }
.word-friccion .letter:nth-child(6) { animation-delay: .4s;   transform: rotate(1deg) translate(-1px, -1px); }
.word-friccion .letter:nth-child(7) { animation-delay: .15s;  transform: rotate(-2deg) translate(2px, 2px); }
.word-friccion .letter:nth-child(8) { animation-delay: .3s;   transform: rotate(2deg) translate(-1px, -2px); }

@keyframes jitter {
  from { }
  to { transform: rotate(0deg) translate(0, 0); }
}

.opening-mark {
  filter: drop-shadow(0 8px 20px rgba(234, 74, 18, 0.45));
  animation: mark-pulse 3.6s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes mark-pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.08); } }

.word-flujo {
  background: var(--flow-gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  background-size: 200% 100%;
  animation: flow-sweep 4s ease-in-out infinite;
  position: relative;
}
@keyframes flow-sweep {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.opening-sub { margin-top: 30px; font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--muted-dark); max-width: 34ch; }

.scroll-cue {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 64px;
  font-family: var(--font-display); font-size: 0.82rem; font-weight: 500; color: var(--muted-dark);
  transition: color 0.25s ease, gap 0.25s ease;
}
.scroll-cue svg { width: 16px; height: 16px; animation: cue-bounce 1.8s ease-in-out infinite; }
.scroll-cue:hover { color: var(--orange); gap: 14px; }
@keyframes cue-bounce { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(5px); } }

@media (max-width: 640px) {
  .opening-statement { gap: 12px 18px; }
  .opening-mark { width: 34px; height: auto; }
}

/* ==========================================================================
   02 · DIAGNÓSTICO
   ========================================================================== */
.question-list { margin-top: 48px; max-width: 780px; }
.question-item {
  display: grid; grid-template-columns: 56px 1fr; gap: 20px;
  padding: 28px 0; border-top: 1px solid var(--line);
}
.question-item:last-child { border-bottom: 1px solid var(--line); }
.question-index { font-family: var(--font-display); font-size: 0.85rem; font-weight: 600; color: var(--orange); padding-top: 4px; }
.question-text { font-size: clamp(1.15rem, 2vw, 1.55rem); font-weight: 500; color: var(--ink); line-height: 1.4; letter-spacing: -0.01em; }
.diagnostico-close { margin-top: 40px; font-size: 1.05rem; color: var(--muted); max-width: 52ch; }

/* ==========================================================================
   03 · CAPACIDADES (mapa de capacidades interactivo)
   ========================================================================== */
.capacidades-map {
  margin-top: 56px; display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 56px; align-items: start;
}
.capacidades-list { position: relative; display: flex; flex-direction: column; }
.capacidades-flowline { position: absolute; left: 7px; top: 30px; width: 40px; height: calc(100% - 60px); pointer-events: none; }

.capacidad-item {
  position: relative; text-align: left; padding: 26px 0 26px 56px; z-index: 1;
  display: flex; flex-direction: column; gap: 6px; border-bottom: 1px solid var(--line);
}
.capacidad-item:first-child { border-top: 1px solid var(--line); }
.capacidad-item::before {
  content: ""; position: absolute; left: 20px; top: 32px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--paper); border: 2px solid var(--line); transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s var(--ease-flow);
}
.capacidad-item.is-active::before, .capacidad-item:hover::before { border-color: var(--orange); background: var(--orange); transform: scale(1.1); }

.capacidad-num { font-family: var(--font-display); font-size: 0.78rem; font-weight: 600; color: var(--muted); }
.capacidad-heading { font-family: var(--font-display); font-size: clamp(1.25rem, 2vw, 1.65rem); font-weight: 600; color: var(--ink); transition: color 0.25s ease; }
.capacidad-item.is-active .capacidad-heading, .capacidad-item:hover .capacidad-heading { color: var(--orange); }
.capacidad-tag { font-size: 0.92rem; color: var(--muted); }

.capacidades-detail { position: relative; min-height: 320px; }
.capacidad-panel {
  padding: 40px; border-radius: 24px; background: var(--paper-dim);
  animation: panel-in 0.4s var(--ease-flow);
}
@keyframes panel-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.capacidad-panel-mark {
  display: block; width: 64px; height: 64px; margin-bottom: 28px;
  background-color: var(--orange);
  -webkit-mask: url("../assets/img/icon-ink-96.png") center / contain no-repeat;
  mask: url("../assets/img/icon-ink-96.png") center / contain no-repeat;
  transition: transform 0.4s var(--ease-flow);
}
.mark-rotate-0 { transform: rotate(0deg); }
.mark-rotate-120 { transform: rotate(120deg); }
.mark-rotate-240 { transform: rotate(240deg); }

.capacidad-panel-tag { display: block; font-family: var(--font-display); font-size: 0.8rem; font-weight: 600; color: var(--ember); letter-spacing: 0.04em; margin-bottom: 12px; }
.capacidad-panel h3 { font-family: var(--font-display); font-size: clamp(1.5rem, 2.4vw, 2rem); font-weight: 600; color: var(--ink); margin-bottom: 16px; }
.capacidad-panel p { font-size: 1.05rem; color: var(--muted); max-width: 42ch; }
.capacidad-link {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 26px;
  font-family: var(--font-display); font-weight: 600; color: var(--ink); font-size: 0.95rem;
  transition: gap 0.2s ease, color 0.2s ease;
}
.capacidad-link:hover { color: var(--ember); gap: 12px; }

@media (max-width: 860px) {
  .capacidades-map { grid-template-columns: 1fr; gap: 0; }
  .capacidades-flowline { display: none; }
  .capacidad-item { padding-left: 40px; }
  .capacidad-item::before { left: 4px; }
  .capacidades-detail { margin-top: 8px; }
  .capacidad-panel { padding: 28px; }
}

/* ==========================================================================
   04 · PROCESO (línea que pasa de quiebre a flujo)
   ========================================================================== */
.stage-proceso { background: var(--paper-dim); }
.proceso-intro { margin-bottom: 24px; }

.proceso-pin { position: relative; height: 340vh; }
.proceso-visual {
  position: sticky; top: 88px; height: calc(100svh - 88px); max-height: 620px;
  display: flex; flex-direction: column; justify-content: center;
  max-width: var(--container); margin: 0 auto; padding: 0 24px;
}
.proceso-path { width: 100%; height: 140px; overflow: visible; }
.proceso-nodes {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 8px;
}
.proceso-node { opacity: 0.35; transform: translateY(10px); transition: opacity 0.5s var(--ease-flow), transform 0.5s var(--ease-flow); }
.proceso-node.is-active { opacity: 1; transform: translateY(0); }
.proceso-node-dot {
  display: block; width: 12px; height: 12px; border-radius: 50%; background: var(--line); margin-bottom: 18px;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
.proceso-node.is-active .proceso-node-dot { background: var(--orange); box-shadow: 0 0 0 6px rgba(234, 74, 18, 0.14); }
.proceso-node-num { display: block; font-family: var(--font-display); font-size: 0.78rem; font-weight: 600; color: var(--orange); margin-bottom: 8px; }
.proceso-node h4 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.proceso-node p { font-size: 0.92rem; color: var(--muted); }

@media (max-width: 760px) {
  .proceso-pin { height: auto; }
  .proceso-visual { position: static; height: auto; max-height: none; padding: 0 24px; }
  .proceso-path { display: none; }
  .proceso-nodes { grid-template-columns: 1fr; gap: 32px; position: relative; padding-left: 26px; border-left: 2px solid var(--line); }
  .proceso-node { opacity: 1; transform: none; }
  .proceso-node-dot { position: absolute; left: -32px; margin-top: 2px; }
}

/* ==========================================================================
   05 · RESULTADO (marquee editorial)
   ========================================================================== */
.stage-resultado { background: var(--ink); color: var(--paper); overflow: hidden; }
.stage-resultado .stage-title { color: var(--paper); }

.marquee { margin-top: 48px; overflow: hidden; display: flex; }
.marquee-track {
  display: flex; align-items: center; flex-shrink: 0; gap: 0.6em;
  animation: marquee-scroll 32s linear infinite;
  padding-right: 0.6em;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee-scroll { from { transform: translateX(0); } to { transform: translateX(-100%); } }

.marquee-item {
  font-family: var(--font-display); font-weight: 600; white-space: nowrap;
  font-size: clamp(1.6rem, 4.2vw, 3.2rem); color: var(--paper);
}
.marquee-sep { color: var(--orange); font-size: clamp(1.2rem, 3vw, 2.2rem); }

/* ==========================================================================
   MANIFIESTO
   ========================================================================== */
.stage-manifiesto { padding: calc(var(--gap-section) * 0.75) 0; text-align: center; }
.manifiesto {
  font-family: var(--font-display); font-weight: 500; font-style: normal;
  font-size: clamp(1.4rem, 3vw, 2.1rem); line-height: 1.5; max-width: 780px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 6px;
}
.manifiesto-strike { color: var(--muted); text-decoration: line-through; text-decoration-color: var(--line); text-decoration-thickness: 2px; }
.manifiesto-emphasis {
  font-weight: 600; margin-top: 10px;
  background: var(--flow-gradient-deep); -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ==========================================================================
   06 · CONTACTO
   ========================================================================== */
.stage-contacto { background: var(--flow-gradient-deep); color: var(--paper); text-align: center; }
.contacto-title { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 600; letter-spacing: -0.01em; }
.contacto-sub { margin-top: 18px; font-size: 1.1rem; font-weight: 500; color: rgba(255,255,255,0.9); }
.contacto-links { margin-top: 30px; display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
.contacto-links a { font-weight: 600; font-size: 0.95rem; opacity: 0.92; transition: opacity 0.2s ease; }
.contacto-links a:hover { opacity: 1; text-decoration: underline; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer { background: var(--ink); color: var(--muted-dark); padding: 40px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 18px; }
.brand--footer .brand-word { color: var(--paper); font-size: 0.95rem; }
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-nav a { font-size: 0.85rem; font-weight: 500; color: var(--muted-dark); }
.footer-nav a:hover { color: var(--orange-light); }
.footer-legal { font-size: 0.78rem; color: rgba(250, 248, 244, 0.4); }

@media (max-width: 700px) { .footer-inner { flex-direction: column; text-align: center; } }

/* ==========================================================================
   Cursor contextual (solo puntero fino)
   ========================================================================== */
.cursor-dot {
  position: fixed; top: 0; left: 0; width: 10px; height: 10px; border-radius: 50%;
  background: var(--orange); pointer-events: none; z-index: 200; opacity: 0;
  transform: translate(-50%, -50%); transition: opacity 0.2s ease, width 0.25s var(--ease-flow), height 0.25s var(--ease-flow), background 0.25s ease;
  mix-blend-mode: difference;
}
.cursor-dot.is-active { opacity: 1; }
.cursor-dot.is-hovering { width: 34px; height: 34px; background: var(--paper); }

@media (hover: none), (pointer: coarse) {
  .cursor-dot { display: none; }
}

/* ==========================================================================
   Reveal on scroll (progressive enhancement)
   ========================================================================== */
.reveal { opacity: 1; transform: none; }
html.js-anim .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s var(--ease-flow), transform 0.7s var(--ease-flow); }
html.js-anim .reveal.is-visible { opacity: 1; transform: translateY(0); }

@media print {
  .reveal { opacity: 1 !important; transform: none !important; }
  .site-nav, .cursor-dot, .noise-layer { display: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js-anim .reveal { opacity: 1; transform: none; transition: none; }
  .word-friccion .letter, .word-flujo, .opening-mark, .scroll-cue svg, .marquee-track { animation: none !important; }
  .proceso-node { opacity: 1; transform: none; }
  .marquee-track[aria-hidden] { display: none; }
}