/* ==========================================================================
   PRAXIA · Consultoría y Sistemas Empresariales
   Sistema de diseño web · v4.0 · Daylight Brand System
   --------------------------------------------------------------------------
   ARQUITECTURA DE SUPERFICIES
   Los componentes no usan colores fijos: leen variables semánticas
   (--surface, --text, --line, --accent…). :root define la superficie clara.
   Las secciones oscuras (.px-bg-ink) sólo redefinen esas variables, así que
   tarjetas, etiquetas, listas y enlaces se adaptan solos sin reglas duplicadas.

   Proporción del manual de marca: 78 % luz · 12 % tinta · 7 % cobalto
   · 2 % teal · 1 % oro.
   --------------------------------------------------------------------------
   01. Tokens de marca
   02. Superficies semánticas
   03. Reset y base
   04. Tipografía
   05. Layout
   06. Decoración y texturas
   07. Botones y enlaces
   08. Tarjetas y contenedores
   09. Header y navegación
   10. Hero
   11. Bloques de contenido
   12. Método
   13. Casos y pestañas
   14. Acordeón
   15. Formularios
   16. Autodiagnóstico
   17. Agenda
   18. Confianza y comparativa
   19. Modelos de colaboración
   20. Recurso descargable y WhatsApp
   21. Footer
   22. Motion
   23. Responsive
   24. Accesibilidad
   ========================================================================== */

/* ==========================================================================
   01. TOKENS DE MARCA · valores oficiales del manual
   ========================================================================== */
:root {
  /* Paleta oficial · los nombres heredados se mantienen para compatibilidad */
  --px-ivory:      #F7F9FC;  /* Nube · fondo general */
  --px-navy:       #162033;  /* Tinta Ejecutiva · autoridad */
  --px-flow:       #2457E6;  /* Cobalto PRAXIA · marca y acción */
  --px-acc:        var(--px-flow); /* alias heredado para enlaces inline */
  --px-teal:       #0B8F87;  /* Teal Inteligente · datos y progreso */
  --px-sand:       #DCE4EE;  /* Borde frío */
  --px-copper:     #C78B2A;  /* Oro Solar · acento editorial */
  --px-graphite:   #5E6A7D;  /* Pizarra · soporte */

  /* Derivaciones necesarias para contraste y jerarquía */
  --px-white:      #FFFFFF;
  --px-ivory-warm: #FBFCFE;
  --px-sand-soft:  #EDF3F8;  /* Niebla */
  --px-navy-700:   #202C43;
  --px-navy-600:   #2E3B54;
  --px-flow-700:   #1946C4;
  --px-flow-300:   #86A6FF;  /* cobalto claro legible sobre tinta */
  --px-flow-200:   #B9CBFF;
  --px-teal-700:   #08746E;
  --px-teal-200:   #73D4CC;
  --px-teal-soft:  #E9F8F6;
  --px-copper-700: #9A6820;
  --px-copper-300: #E2B76F;
  --success:       #16845B;
  --warning:       #B7791F;
  --danger:        #C53B44;
  --info:          #2F6FED;

  /* Tipografía */
  --px-sans: 'Manrope', ui-sans-serif, -apple-system, BlinkMacSystemFont,
             'Segoe UI', Arial, Helvetica, sans-serif;
  --px-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;

  /* Escala fluida */
  --fs-display: clamp(2.5rem, 1.5rem + 3.5vw, 4.5rem);
  --fs-h1:      clamp(2.2rem, 1.4rem + 3.2vw, 3.9rem);
  --fs-h2:      clamp(1.85rem, 1.3rem + 2.2vw, 3rem);
  --fs-h3:      clamp(1.25rem, 1.08rem + 0.7vw, 1.62rem);
  --fs-h4:      clamp(1.05rem, 0.98rem + 0.32vw, 1.2rem);
  --fs-lead:    clamp(1.05rem, 0.98rem + 0.4vw, 1.28rem);
  --fs-body:    1.0425rem;
  --fs-sm:      0.9375rem;
  --fs-xs:      0.8125rem;
  --fs-eyebrow: 0.75rem;

  /* Espaciado */
  --sp-section:   clamp(4.5rem, 2.5rem + 7.5vw, 9rem);
  --sp-block:     clamp(2.5rem, 1.5rem + 3.5vw, 4.5rem);
  --gutter:       clamp(1.25rem, 0.6rem + 3vw, 3rem);
  --shell:        1260px;
  --shell-narrow: 940px;

  /* Radios */
  --r-xs: 4px;  --r-sm: 8px;  --r-md: 12px;
  --r-lg: 16px; --r-xl: 24px; --r-pill: 999px;

  /* Motion */
  --ease-expo:  cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out:   cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 170ms; --dur-base: 300ms; --dur-slow: 650ms; --dur-reveal: 860ms;

  --header-h: 78px;
}

/* ==========================================================================
   02. SUPERFICIES SEMÁNTICAS
   ========================================================================== */
:root {
  /* Superficie clara · valor por defecto de todo el sitio */
  --surface:      var(--px-ivory);
  --surface-2:    var(--px-white);
  --surface-3:    var(--px-sand-soft);
  --surface-card: var(--px-white);

  --text:        var(--px-navy);      /* 14,2:1 sobre marfil */
  --text-soft:   #3F4B61;
  --text-muted:  #5E6A7D;
  --text-faint:  #748095;

  --line:        #DCE4EE;
  --line-strong: #C7D2E0;
  --line-input:  #7D899C;

  --accent:        var(--px-flow);      /* 5,35:1 sobre marfil */
  --accent-strong: var(--px-flow-700);
  --accent-tint:   rgba(36, 87, 230, 0.07);
  --accent-line:   rgba(36, 87, 230, 0.22);
  --warm:          var(--px-copper-700);
  --warm-tint:     rgba(199, 139, 42, 0.10);
  --warm-line:     rgba(199, 139, 42, 0.28);

  --btn-fg-on-accent: var(--px-ivory);

  --sh-xs: 0 1px 2px rgba(31, 52, 82, 0.05);
  --sh-sm: 0 2px 8px -2px rgba(31, 52, 82, 0.08);
  --sh-md: 0 12px 28px -14px rgba(31, 52, 82, 0.16);
  --sh-lg: 0 30px 60px -28px rgba(31, 52, 82, 0.22);
}

/* --- Superficie oscura · azul PRAXIA (25 % del sitio) --------------------- */
.px-bg-ink {
  --surface:      var(--px-navy);
  --surface-2:    var(--px-navy-700);
  --surface-3:    var(--px-navy-600);
  --surface-card: rgba(255, 255, 255, 0.045);

  --text:        var(--px-ivory);
  --text-soft:   #DCE4EE;
  --text-muted:  #AEBBD0;
  --text-faint:  #8C99AF;

  --line:        rgba(247, 249, 252, 0.14);
  --line-strong: rgba(247, 249, 252, 0.26);
  --line-input:  rgba(247, 249, 252, 0.38);

  --accent:        var(--px-flow-200);   /* 7,8:1 sobre azul */
  --accent-strong: var(--px-flow-300);
  --accent-tint:   rgba(134, 166, 255, 0.12);
  --accent-line:   rgba(134, 166, 255, 0.30);
  --warm:          var(--px-copper-300);
  --warm-tint:     rgba(226, 183, 111, 0.12);
  --warm-line:     rgba(226, 183, 111, 0.28);

  --btn-fg-on-accent: var(--px-navy);

  --sh-xs: none;
  --sh-sm: none;
  --sh-md: 0 18px 40px -22px rgba(4, 12, 20, 0.7);
  --sh-lg: 0 40px 80px -36px rgba(4, 12, 20, 0.8);

  background: var(--px-navy);
  color: var(--text);
}

/* Superficies claras alternas */
.px-bg-alt   { background: var(--px-white); }
.px-bg-sand  { background: var(--px-sand-soft); }
.px-bg-ivory { background: var(--px-ivory); }

/* ==========================================================================
   03. RESET Y BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  background: var(--px-ivory);
  color: var(--text);
  font-family: var(--px-sans);
  font-size: var(--fs-body);
  line-height: 1.62;
  letter-spacing: -0.006em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
body.px-no-scroll { overflow: hidden; }

img, svg, video, canvas, iframe { display: block; max-width: 100%; }
img, svg, video, canvas { height: auto; }
svg { flex-shrink: 0; }

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

::selection { background: var(--px-flow); color: var(--px-ivory); }

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

/* ==========================================================================
   04. TIPOGRAFÍA
   ========================================================================== */
h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.06;
  color: var(--text);
  text-wrap: balance;
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); letter-spacing: -0.021em; line-height: 1.2; }
h4 { font-size: var(--fs-h4); letter-spacing: -0.014em; line-height: 1.32; }

p { margin: 0 0 1.05em; }
p:last-child { margin-bottom: 0; }
a { color: inherit; text-decoration: none; }
strong, b { font-weight: 700; color: var(--text); }

.px-display {
  font-size: var(--fs-display);
  line-height: 1;
  letter-spacing: -0.038em;
  font-weight: 800;
}

.px-lead {
  font-size: var(--fs-lead);
  line-height: 1.56;
  color: var(--text-soft);
  font-weight: 400;
  letter-spacing: -0.011em;
  text-wrap: pretty;
}

.px-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  margin: 0 0 1.35rem;
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: 0.19em;
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1;
}
.px-eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}
.px-eyebrow--plain::before { display: none; }

.px-accent { color: var(--accent); }
.px-accent-copper { color: var(--warm); }
.px-serif { font-family: var(--px-serif); font-weight: 400; font-style: italic; letter-spacing: -0.01em; }
.px-muted { color: var(--text-muted); }
.px-soft  { color: var(--text-soft); }
.px-num { font-variant-numeric: tabular-nums; }

.px-measure    { max-width: 62ch; }
.px-measure-sm { max-width: 48ch; }
.px-measure-lg { max-width: 74ch; }

.px-index {
  font-size: var(--fs-xs);
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   05. LAYOUT
   ========================================================================== */
.px-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.px-shell--narrow { max-width: var(--shell-narrow); }

.px-section { position: relative; padding-block: var(--sp-section); }
.px-section--tight { padding-block: clamp(3rem, 2rem + 4.5vw, 5.5rem); }

.px-section-head {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  grid-template-columns: minmax(0, 1fr);
  margin-bottom: var(--sp-block);
}
.px-section-head--split {
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: end;
}

.px-grid { display: grid; gap: clamp(1rem, 2vw, 1.5rem); }
.px-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.px-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.px-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.px-stack   { display: flex; flex-direction: column; }
.px-stack-3 { gap: 0.75rem; } .px-stack-4 { gap: 1rem; }
.px-stack-6 { gap: 1.5rem; } .px-stack-8 { gap: 2rem; }

.px-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.85rem; }
.px-divider { height: 1px; border: 0; margin: 0; background: var(--line); }

/* ==========================================================================
   06. DECORACIÓN Y TEXTURAS
   ========================================================================== */
.px-grid-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: radial-gradient(115% 85% at 50% 0%, #000 5%, transparent 70%);
          mask-image: radial-gradient(115% 85% at 50% 0%, #000 5%, transparent 70%);
  opacity: 0.75;
}
.px-bg-ink .px-grid-lines { opacity: 0.5; }

.px-glow {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(90px);
}
.px-glow--flow   { background: radial-gradient(circle, rgba(36,87,230,0.16), transparent 68%); }
.px-glow--copper { background: radial-gradient(circle, rgba(199,139,42,0.14), transparent 68%); }
.px-bg-ink .px-glow--flow   { background: radial-gradient(circle, rgba(63,176,165,0.30), transparent 68%); }
.px-bg-ink .px-glow--copper { background: radial-gradient(circle, rgba(223,162,116,0.20), transparent 68%); }

.px-noise::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.022;
  mix-blend-mode: multiply;
  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='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.px-bg-ink.px-noise::after { mix-blend-mode: overlay; opacity: 0.035; }

/* ==========================================================================
   07. BOTONES Y ENLACES
   ========================================================================== */
.px-btn {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  --btn-bd: var(--line-strong);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 0.88em 1.55em;
  min-height: 50px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: -0.008em;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  text-align: center;
  transition: transform var(--dur-fast) var(--ease-out),
              background-color var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.px-btn:active { transform: translateY(1px) scale(0.995); }
.px-btn svg { transition: transform var(--dur-base) var(--ease-expo); }
.px-btn:hover svg { transform: translateX(3px); }

.px-btn--primary {
  --btn-bg: var(--px-flow);
  --btn-fg: var(--px-ivory);
  --btn-bd: var(--px-flow);
  box-shadow: 0 10px 24px -14px rgba(36, 87, 230, 0.8);
}
.px-btn--primary:hover {
  --btn-bg: var(--px-flow-700);
  --btn-bd: var(--px-flow-700);
  box-shadow: 0 16px 34px -14px rgba(36, 87, 230, 0.9);
}

.px-btn--ink {
  --btn-bg: var(--px-navy);
  --btn-fg: var(--px-ivory);
  --btn-bd: var(--px-navy);
}
.px-btn--ink:hover { --btn-bg: var(--px-navy-600); --btn-bd: var(--px-navy-600); }

.px-btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--text);
  --btn-bd: var(--line-strong);
}
.px-btn--ghost:hover { --btn-bd: var(--text); background: rgba(22, 32, 51, 0.04); }
.px-bg-ink .px-btn--ghost:hover { background: rgba(247, 249, 252, 0.08); }

.px-btn--sm { padding: 0.62em 1.15em; min-height: 42px; font-size: var(--fs-xs); }
.px-btn--lg { padding: 1.05em 2rem; min-height: 58px; font-size: var(--fs-body); }
.px-btn--block { width: 100%; }

.px-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.005em;
  transition: color var(--dur-base) var(--ease-out), gap var(--dur-base) var(--ease-expo);
}
.px-link:hover { color: var(--accent-strong); gap: 0.75em; }
.px-bg-ink .px-link:hover { color: var(--px-ivory); }

.px-link-underline {
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size var(--dur-base) var(--ease-out);
}
.px-link-underline:hover { background-size: 100% 1px; }

/* ==========================================================================
   08. TARJETAS Y CONTENEDORES
   ========================================================================== */
.px-card {
  position: relative;
  padding: clamp(1.5rem, 1.1rem + 1.1vw, 2.1rem);
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
  transition: border-color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.px-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-line);
  box-shadow: var(--sh-md);
}
.px-card--flat { box-shadow: none; background: transparent; }
.px-card--sand { background: var(--px-sand-soft); border-color: var(--px-sand); }
.px-card--accent {
  background: var(--accent-tint);
  border-color: var(--accent-line);
  box-shadow: none;
}
.px-card--wide { grid-column: span 2; }

/* Barra superior de acento */
.px-card--marked { overflow: hidden; }
.px-card--marked::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: var(--px-flow);
}

.px-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 0.34em 0.78em;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  line-height: 1.4;
  width: fit-content;
}
.px-tag--flow   { color: var(--accent-strong); border-color: var(--accent-line); background: var(--accent-tint); }
.px-tag--copper { color: var(--warm); border-color: var(--warm-line); background: var(--warm-tint); }
.px-tag--pending { color: var(--warm); border-color: var(--warm-line); border-style: dashed; }
.px-bg-ink .px-tag--flow { color: var(--px-flow-200); }

.px-case__body > .px-tag,
.px-case__aside .px-tag,
.px-solution > .px-tag,
.px-method__body > .px-tag { justify-self: start; align-self: start; }

.px-pending {
  border-bottom: 1px dashed var(--warm-line);
  color: var(--warm);
  cursor: help;
}

/* ==========================================================================
   09. HEADER Y NAVEGACIÓN
   ========================================================================== */
.px-skip {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 200;
  padding: 0.75rem 1.15rem;
  background: var(--px-flow);
  color: var(--px-ivory);
  border-radius: var(--r-sm);
  font-weight: 700;
  font-size: var(--fs-sm);
  transition: top var(--dur-base) var(--ease-out);
}
.px-skip:focus { top: 1rem; }

.px-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(247, 249, 252, 0.72);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  border-bottom: 1px solid transparent;
  transition: background-color var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.px-header.is-stuck {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 20px -8px rgba(22, 32, 51, 0.16);
}

.px-header__inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.px-logo { display: inline-flex; align-items: center; gap: 0.7rem; }
.px-logo__mark { height: 32px; width: auto; transition: transform var(--dur-slow) var(--ease-expo); }
.px-logo:hover .px-logo__mark { transform: translateY(-2px); }
.px-logo__text { display: grid; gap: 3px; }
.px-logo__word {
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  line-height: 1;
  color: var(--px-navy);
}
.px-logo__sub {
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.135em;
  text-transform: uppercase;
  line-height: 1;
  color: var(--text-muted);
  white-space: nowrap;
}
.px-footer .px-logo__word { color: var(--px-ivory); }
@media (max-width: 560px) { .px-logo__sub { display: none; } }

.px-progress {
  position: absolute;
  left: 0; bottom: -1px;
  height: 2px; width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--px-flow);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}
.px-header.is-stuck .px-progress { opacity: 1; }

.px-nav { display: flex; align-items: center; gap: 0.2rem; }
.px-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.6rem 0.85rem;
  border-radius: var(--r-sm);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-soft);
  transition: color var(--dur-base) var(--ease-out), background-color var(--dur-base) var(--ease-out);
}
.px-nav__link:hover { color: var(--px-navy); background: rgba(22, 32, 51, 0.05); }
.px-nav__link[aria-current="page"] { color: var(--px-navy); font-weight: 700; }
.px-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0.85rem; right: 0.85rem; bottom: 0.3rem;
  height: 2px;
  border-radius: 2px;
  background: var(--px-flow);
}
.px-nav__chev { transition: transform var(--dur-base) var(--ease-out); }
.px-nav__item { position: relative; }
.px-nav__item--has-menu > .px-nav__link[aria-expanded="true"] .px-nav__chev { transform: rotate(180deg); }

.px-mega {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  translate: -50% 0;
  width: min(680px, calc(100vw - 3rem));
  padding: 0.75rem;
  background: var(--px-white);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-lg);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.25rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-expo),
              visibility var(--dur-base);
}
.px-nav__item.is-open .px-mega { opacity: 1; visibility: visible; transform: translateY(0); }

.px-mega__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  padding: 0.85rem 0.9rem;
  border-radius: var(--r-md);
  transition: background-color var(--dur-fast) var(--ease-out);
}
.px-mega__item:hover { background: var(--px-ivory); }
.px-mega__icon {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: var(--r-sm);
  background: var(--accent-tint);
  border: 1px solid var(--accent-line);
  color: var(--px-flow);
}
.px-mega__title { display: block; font-size: var(--fs-sm); font-weight: 700; color: var(--px-navy); line-height: 1.35; letter-spacing: -0.012em; }
.px-mega__desc  { display: block; font-size: var(--fs-xs); color: var(--text-muted); line-height: 1.5; margin-top: 0.25rem; }
.px-mega__foot {
  grid-column: 1 / -1;
  margin-top: 0.35rem;
  padding: 0.9rem;
  border-top: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.px-header__cta { display: flex; align-items: center; gap: 0.6rem; }
/* Los botones del header nunca deben partirse en dos líneas */
.px-header__cta .px-btn { white-space: nowrap; flex-shrink: 0; }
.px-nav__link { white-space: nowrap; }

.px-burger {
  display: none;
  width: 46px; height: 46px;
  align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  cursor: pointer;
}
.px-burger__box { display: block; width: 18px; height: 12px; position: relative; }
.px-burger__box > span {
  position: absolute; left: 0;
  width: 100%; height: 1.6px;
  background: var(--px-navy);
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-expo), opacity var(--dur-fast);
}
.px-burger__box > span:nth-child(1) { top: 0; }
.px-burger__box > span:nth-child(2) { top: 50%; translate: 0 -50%; }
.px-burger__box > span:nth-child(3) { bottom: 0; }
.px-burger[aria-expanded="true"] .px-burger__box > span:nth-child(1) { transform: translateY(5.2px) rotate(45deg); }
.px-burger[aria-expanded="true"] .px-burger__box > span:nth-child(2) { opacity: 0; }
.px-burger[aria-expanded="true"] .px-burger__box > span:nth-child(3) { transform: translateY(-5.2px) rotate(-45deg); }

.px-mobile {
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: 99;
  background: var(--px-ivory);
  padding: 1.5rem var(--gutter) 2.5rem;
  overflow-y: auto;
  opacity: 0; visibility: hidden;
  transform: translateY(-12px);
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-slow) var(--ease-expo),
              visibility var(--dur-base);
}
.px-mobile.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
.px-mobile__group + .px-mobile__group { margin-top: 1.75rem; }
.px-mobile__label {
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: 0.19em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.px-mobile__link {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--px-navy);
}
.px-mobile__link span:last-child { color: var(--px-flow); }
.px-mobile__sub {
  display: block;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-sm);
  color: var(--text-soft);
}
.px-mobile__cta { margin-top: 2rem; display: grid; gap: 0.75rem; }

/* ==========================================================================
   10. HERO
   ========================================================================== */
.px-hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(3rem, 6vw, 5.5rem));
  padding-bottom: clamp(2.5rem, 4vw, 4rem);
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(120% 90% at 82% -10%, var(--px-sand-soft) 0%, transparent 58%),
    radial-gradient(90% 70% at 8% 0%, rgba(36,87,230,0.06) 0%, transparent 55%),
    var(--px-ivory);
}
.px-hero__bg { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.px-hero__bg .px-glow--flow {
  width: min(1000px, 110vw); height: min(700px, 80vh);
  left: 50%; top: -30%; translate: -50% 0;
}
.px-hero__bg .px-glow--copper { width: 480px; height: 400px; right: -10%; bottom: -20%; }

.px-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: clamp(2rem, 4vw, 4.5rem);
  align-items: center;
}
.px-hero__title { margin-bottom: 1.5rem; }
.px-hero__lead { margin-bottom: 2.25rem; max-width: 54ch; }
.px-hero__actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-bottom: 2rem; }

.px-hero__meta {
  display: flex; flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}
.px-hero__meta span { display: inline-flex; align-items: center; gap: 0.5em; }
.px-hero__meta span::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
  background: var(--px-flow);
}

.px-hero__panel {
  position: relative;
  padding: clamp(1.1rem, 1.6vw, 1.6rem);
  background: var(--px-white);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-lg);
}
.px-hero__panel-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 0 0.4rem 0.9rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0.9rem;
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
}

/* Diagrama del hero */
.px-diagram .d-stroke { stroke: var(--px-flow); }
.px-diagram .d-fill   { fill: var(--px-flow); }
.px-diagram .d-text   { fill: var(--px-flow); }
.px-diagram .d-box    { fill: rgba(36,87,230,0.07); stroke: var(--px-flow); }
.px-diagram .d-dim    { fill: #5E6A7D; }
.px-diagram .d-dim-s  { stroke: #A6B2C2; }
.px-diagram .d-ink    { fill: var(--px-navy); }
.px-diagram .d-warm   { stroke: var(--px-copper); }
.px-diagram .d-surf   { fill: var(--px-sand-soft); stroke: var(--px-sand); }
.px-diagram .d-rule   { stroke: var(--line); }

.px-capstrip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}
.px-capstrip__item {
  display: flex; flex-direction: column; gap: 0.85rem;
  padding: 1.15rem 1.1rem;
  background: var(--px-white);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--sh-xs);
  transition: border-color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.px-capstrip__item:hover {
  border-color: var(--accent-line);
  transform: translateY(-3px);
  box-shadow: var(--sh-md);
}
.px-capstrip__item svg { color: var(--px-flow); }
.px-capstrip__item span {
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--text-soft);
  line-height: 1.35;
}

.px-pagehero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(3.5rem, 7vw, 6rem));
  padding-bottom: clamp(3rem, 6vw, 5rem);
  overflow: hidden;
  isolation: isolate;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(100% 80% at 85% -20%, var(--px-sand-soft) 0%, transparent 60%),
    var(--px-ivory);
}
.px-pagehero__bg { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.px-pagehero__bg .px-glow--flow { width: 850px; height: 580px; left: 10%; top: -44%; }

.px-breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem;
  margin-bottom: 1.75rem;
  font-size: var(--fs-xs);
  color: var(--text-muted);
}
.px-breadcrumb ol { display: contents; margin: 0; padding: 0; }
.px-breadcrumb li { list-style: none; display: inline-flex; align-items: center; gap: 0.5rem; }
.px-breadcrumb li + li::before { content: "/"; opacity: 0.45; }
.px-breadcrumb a:hover { color: var(--px-flow); }
.px-breadcrumb [aria-current] { color: var(--text-soft); font-weight: 600; }

/* ==========================================================================
   11. BLOQUES DE CONTENIDO
   ========================================================================== */
.px-signal {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.95rem;
  align-items: start;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
}
.px-signal__dot {
  width: 20px; height: 20px;
  margin-top: 0.2rem;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid var(--warm-line);
  background: var(--warm-tint);
  color: var(--warm);
  flex-shrink: 0;
}
.px-signal p { font-size: var(--fs-sm); color: var(--text-soft); }

.px-solution { display: flex; flex-direction: column; gap: 1.15rem; min-height: 100%; }
.px-solution__icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: var(--r-md);
  background: var(--accent-tint);
  border: 1px solid var(--accent-line);
  color: var(--px-flow);
}
.px-bg-ink .px-solution__icon { color: var(--px-flow-200); }
.px-solution__meta {
  margin-top: auto;
  padding-top: 1.15rem;
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between;
  gap: 0.75rem 1rem;
}
.px-solution__pr { display: grid; gap: 0.5rem; font-size: var(--fs-sm); }
.px-solution__pr dt {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.px-solution__pr dd { margin: 0 0 0.65rem; color: var(--text-soft); }
.px-solution__pr dd:last-child { margin-bottom: 0; }

.px-check { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7rem; }
.px-check li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
  font-size: var(--fs-sm);
  color: var(--text-soft);
}
.px-check li::before {
  content: "";
  width: 17px; height: 17px;
  margin-top: 0.32rem;
  border-radius: 50%;
  border: 1px solid var(--accent-line);
  background:
    linear-gradient(var(--px-flow), var(--px-flow)) center/7px 1.6px no-repeat,
    var(--accent-tint);
}
.px-bg-ink .px-check li::before {
  background:
    linear-gradient(var(--px-flow-200), var(--px-flow-200)) center/7px 1.6px no-repeat,
    var(--accent-tint);
}

.px-contrast { display: grid; gap: 1.25rem; grid-template-columns: repeat(2, minmax(0,1fr)); }
.px-contrast__col {
  padding: clamp(1.4rem, 1.1rem + 1vw, 2rem);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--surface-card);
}
.px-contrast__col--yes { background: var(--accent-tint); border-color: var(--accent-line); }
.px-contrast ul { list-style: none; margin: 1rem 0 0; padding: 0; display: grid; gap: 0.6rem; }
.px-contrast li { font-size: var(--fs-sm); color: var(--text-soft); padding-left: 1.35rem; position: relative; }
.px-contrast li::before { position: absolute; left: 0; top: 0.02em; font-weight: 800; }
.px-contrast__col--yes li::before { content: "+"; color: var(--px-flow); }
.px-contrast__col--no  li::before { content: "−"; color: var(--text-muted); }

.px-result {
  padding: 1.4rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--surface-card);
  box-shadow: var(--sh-xs);
  transition: border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.px-result:hover { border-color: var(--accent-line); box-shadow: var(--sh-sm); }
.px-result h3, .px-result h4 {
  font-size: var(--fs-h4);
  letter-spacing: -0.015em;
  line-height: 1.3;
  margin-bottom: 0.45rem;
}
.px-result p { font-size: var(--fs-sm); color: var(--text-muted); }

.px-quote {
  position: relative;
  padding: clamp(2rem, 1.4rem + 2vw, 3.25rem);
  border-radius: var(--r-xl);
  border: 1px solid var(--line);
  background:
    radial-gradient(110% 130% at 0% 0%, var(--accent-tint), transparent 60%),
    var(--surface-card);
}
.px-quote__text {
  font-family: var(--px-serif);
  font-style: italic;
  font-size: clamp(1.4rem, 1.1rem + 1.5vw, 2.3rem);
  line-height: 1.26;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: balance;
}
.px-quote__by {
  margin-top: 1.5rem;
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
}

.px-statement {
  font-size: clamp(1.55rem, 1rem + 2.5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  text-wrap: balance;
  max-width: 22ch;
}

.px-deflist { display: grid; gap: 0; margin: 0; }
.px-deflist__row {
  display: grid;
  grid-template-columns: minmax(0, 0.34fr) minmax(0, 0.66fr);
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
  align-items: start;
}
.px-deflist__row:last-child { border-bottom: 1px solid var(--line); }
.px-deflist__term { font-size: var(--fs-h4); font-weight: 700; letter-spacing: -0.018em; color: var(--text); }
.px-deflist__desc { font-size: var(--fs-sm); color: var(--text-soft); margin: 0; }

.px-cta {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.px-cta__bg { position: absolute; inset: 0; z-index: -1; }
.px-cta__bg .px-glow--flow {
  width: 900px; height: 540px; left: 50%; translate: -50% 0; bottom: -55%;
}
.px-cta__inner { text-align: center; display: grid; justify-items: center; gap: 1.5rem; }
.px-cta__title { font-size: var(--fs-h2); max-width: 20ch; }

/* ==========================================================================
   12. MÉTODO
   ========================================================================== */
.px-method { position: relative; }
.px-method__track { position: relative; height: 340vh; }
.px-method__sticky {
  position: sticky; top: 0;
  height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  overflow: hidden;
}
.px-method__head { margin-bottom: clamp(1.5rem, 3vw, 2.5rem); }
.px-method__rail {
  display: flex; align-items: center; gap: 1rem;
  margin-bottom: 1.5rem;
  font-size: var(--fs-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
}
.px-method__bar { flex: 1; height: 2px; background: var(--line); border-radius: 2px; overflow: hidden; }
.px-method__bar i {
  display: block; height: 100%; width: 25%;
  background: var(--accent);
  transform-origin: 0 50%;
  transition: transform 120ms linear;
}
.px-method__cards { display: flex; gap: clamp(1rem, 2vw, 1.75rem); will-change: transform; }
.px-method__card {
  flex: 0 0 auto;
  width: min(62%, 620px);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--surface-card);
  overflow: hidden;
  transition: border-color var(--dur-base) var(--ease-out);
}
.px-method__card.is-active { border-color: var(--accent-line); }
.px-method__num {
  padding: clamp(1.4rem, 2vw, 2rem) clamp(1rem, 1.5vw, 1.5rem);
  border-right: 1px solid var(--line);
  display: flex; align-items: flex-start;
}
.px-method__num span {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--accent-tint);
  border: 1px solid var(--accent-line);
  color: var(--accent);
  font-weight: 800;
  font-size: var(--fs-sm);
  font-variant-numeric: tabular-nums;
}
.px-method__body { padding: clamp(1.4rem, 2vw, 2.2rem); display: grid; gap: 1.1rem; align-content: start; }
.px-method__body h3 { font-size: clamp(1.4rem, 1.1rem + 1.1vw, 2rem); }
.px-method__body p { font-size: var(--fs-sm); color: var(--text-soft); }
.px-method__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.px-method__stack { display: none; }
.px-method__stepcard {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

/* ==========================================================================
   13. CASOS Y PESTAÑAS
   ========================================================================== */
.px-tabs { display: grid; gap: 1.5rem; }
.px-tablist {
  display: flex; gap: 0.25rem;
  padding: 0.3rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--surface-card);
  overflow-x: auto;
  scrollbar-width: none;
}
.px-tablist::-webkit-scrollbar { display: none; }
.px-tab {
  flex: 1 0 auto;
  padding: 0.72rem 1.15rem;
  border: 0;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--text-muted);
  font-size: var(--fs-sm);
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--dur-base) var(--ease-out), background-color var(--dur-base) var(--ease-out);
}
.px-tab:hover { color: var(--text); }
.px-tab[aria-selected="true"] { background: var(--px-navy); color: var(--px-ivory); }
.px-bg-ink .px-tab[aria-selected="true"] { background: var(--px-flow-200); color: var(--px-navy); }

.px-tabpanel { display: none; }
.px-tabpanel.is-active { display: block; animation: pxFadeUp var(--dur-slow) var(--ease-expo) both; }

.px-case {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--surface-card);
  box-shadow: var(--sh-sm);
}
.px-case__body  { padding: clamp(1.5rem, 1.1rem + 1.4vw, 2.4rem); display: grid; gap: 1.15rem; align-content: start; }
.px-case__aside {
  padding: clamp(1.5rem, 1.1rem + 1.4vw, 2.4rem);
  border-left: 1px solid var(--line);
  background: var(--px-ivory);
  display: grid; gap: 1.25rem; align-content: start;
}
.px-bg-ink .px-case__aside { background: rgba(255,255,255,0.03); }
.px-case__stat dt {
  font-size: var(--fs-xs);
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
  margin-bottom: 0.3rem;
}
.px-case__stat dd { margin: 0; font-size: var(--fs-sm); color: var(--text-soft); }

.px-blueprint {
  position: relative;
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-lg);
  padding: clamp(1.5rem, 1.1rem + 1.4vw, 2.4rem);
  background: var(--surface-card);
}

/* ==========================================================================
   14. ACORDEÓN
   ========================================================================== */
.px-acc { border-top: 1px solid var(--line); }
.px-acc__item { border-bottom: 1px solid var(--line); }
.px-acc__btn {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem;
  padding: 1.4rem 0;
  background: none; border: 0;
  text-align: left;
  cursor: pointer;
  font-size: var(--fs-h4);
  font-weight: 700;
  letter-spacing: -0.018em;
  color: var(--text);
  transition: color var(--dur-base) var(--ease-out);
}
.px-acc__btn:hover { color: var(--px-flow); }
.px-bg-ink .px-acc__btn:hover { color: var(--px-flow-200); }
.px-acc__icon {
  position: relative;
  flex-shrink: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
}
.px-acc__icon::before, .px-acc__icon::after {
  content: "";
  position: absolute; top: 50%; left: 50%;
  translate: -50% -50%;
  background: var(--px-flow);
  transition: transform var(--dur-base) var(--ease-expo), opacity var(--dur-base);
}
.px-bg-ink .px-acc__icon::before, .px-bg-ink .px-acc__icon::after { background: var(--px-flow-200); }
.px-acc__icon::before { width: 9px; height: 1.6px; }
.px-acc__icon::after  { width: 1.6px; height: 9px; }
.px-acc__btn[aria-expanded="true"] .px-acc__icon::after { transform: rotate(90deg); opacity: 0; }
.px-acc__panel { overflow: hidden; height: 0; transition: height var(--dur-base) var(--ease-out); }
.px-acc__inner { padding: 0 0 1.5rem; max-width: 72ch; }
.px-acc__inner p { font-size: var(--fs-sm); color: var(--text-soft); }

/* ==========================================================================
   15. FORMULARIOS
   ========================================================================== */
.px-form { display: grid; gap: 1.15rem; }
.px-form__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.15rem; }
.px-field { display: grid; gap: 0.45rem; }
.px-field--full { grid-column: 1 / -1; }

.px-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-muted);
}
/* El asterisco de campo obligatorio usa siempre el cobre legible de la
   superficie actual, esté dentro de una etiqueta o suelto en un párrafo. */
.px-req { color: var(--warm); font-weight: 700; }
.px-label .px-req { margin-left: 0.2em; }

.px-input, .px-select, .px-textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  background: var(--px-white);
  border: 1px solid var(--line-input);
  border-radius: var(--r-md);
  color: var(--text);
  font-size: var(--fs-sm);
  appearance: none;
  transition: border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.px-bg-ink .px-input, .px-bg-ink .px-select, .px-bg-ink .px-textarea {
  background: rgba(255,255,255,0.06);
}
.px-textarea { min-height: 130px; resize: vertical; line-height: 1.6; }
.px-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%235C6D77' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}
.px-input::placeholder, .px-textarea::placeholder { color: var(--text-faint); }
.px-input:focus, .px-select:focus, .px-textarea:focus {
  outline: none;
  border-color: var(--px-flow);
  box-shadow: 0 0 0 3px rgba(36, 87, 230, 0.16);
}
.px-input[aria-invalid="true"], .px-select[aria-invalid="true"], .px-textarea[aria-invalid="true"] {
  border-color: var(--px-copper-700);
}
.px-error { font-size: var(--fs-xs); color: var(--px-copper-700); display: none; }
.px-bg-ink .px-error { color: var(--px-copper-300); }
.px-error.is-visible { display: block; }

.px-check-field {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  align-items: start;
  font-size: var(--fs-xs);
  color: var(--text-muted);
  line-height: 1.6;
}
.px-check-field input { width: 18px; height: 18px; margin-top: 0.15rem; accent-color: var(--px-flow); cursor: pointer; }
.px-check-field a { color: var(--px-flow); text-decoration: underline; text-underline-offset: 2px; }

.px-form__note { font-size: var(--fs-xs); color: var(--text-muted); line-height: 1.6; }
.px-form__success {
  display: none;
  padding: clamp(1.5rem, 1.2rem + 1vw, 2.25rem);
  border: 1px solid var(--accent-line);
  border-radius: var(--r-lg);
  background: var(--accent-tint);
}
.px-form__success.is-visible { display: block; animation: pxFadeUp var(--dur-slow) var(--ease-expo) both; }

/* ==========================================================================
   16. AUTODIAGNÓSTICO
   ========================================================================== */
.px-quiz-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.32fr) minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2rem);
  align-items: start;
}
.px-quiz-guide {
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
  padding: clamp(1.35rem, 1rem + 1vw, 1.8rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(155deg, var(--px-white), var(--px-sand-soft));
  box-shadow: var(--sh-sm);
}
.px-quiz-guide__title {
  margin-bottom: 1.25rem;
  font-size: var(--fs-xs);
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.px-quiz-guide__list { display: grid; gap: 0.8rem; margin: 0; padding: 0; list-style: none; }
.px-quiz-guide__item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 0.7rem;
  align-items: center;
  color: var(--text-muted);
  font-size: var(--fs-xs);
  font-weight: 700;
  line-height: 1.35;
  transition: color var(--dur-fast) var(--ease-out);
}
.px-quiz-guide__num {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: var(--px-white);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  transition: border-color var(--dur-fast), background-color var(--dur-fast), color var(--dur-fast);
}
.px-quiz-guide__item.is-active { color: var(--px-navy); }
.px-quiz-guide__item.is-active .px-quiz-guide__num {
  border-color: var(--px-flow);
  background: var(--px-flow);
  color: var(--px-white);
}
.px-quiz-guide__item.is-complete .px-quiz-guide__num {
  border-color: rgba(11, 143, 135, 0.28);
  background: var(--px-teal-soft);
  color: var(--px-teal-700);
}
.px-quiz-guide__note {
  margin-top: 1.4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  color: var(--text-muted);
  font-size: var(--fs-xs);
  line-height: 1.55;
}
.px-quiz {
  background: var(--px-white);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--sh-lg);
  overflow: hidden;
}
.px-quiz__head {
  padding: clamp(1.25rem, 1rem + 1vw, 1.8rem) clamp(1.4rem, 1.1rem + 1.2vw, 2.5rem);
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between;
  gap: 1rem;
  background: linear-gradient(110deg, rgba(36,87,230,0.06), rgba(11,143,135,0.035));
}
.px-quiz__step {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.px-quiz__dim {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.38rem 0.7rem;
  border: 1px solid var(--accent-line);
  border-radius: var(--r-pill);
  background: var(--accent-tint);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--px-flow-700);
  letter-spacing: 0.02em;
}
.px-quiz__dim::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--px-teal); }
.px-quiz__bar { width: 100%; height: 6px; background: var(--line); overflow: hidden; }
.px-quiz__bar i {
  display: block; height: 100%; width: 100%;
  background: linear-gradient(90deg, var(--px-flow), var(--px-teal));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform var(--dur-base) var(--ease-out);
}
.px-quiz__body { padding: clamp(1.75rem, 1.2rem + 1.9vw, 3.25rem) clamp(1.4rem, 1.1rem + 1.6vw, 3rem); }
.px-quiz__q {
  max-width: 24ch;
  font-size: clamp(1.45rem, 1.05rem + 1.35vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.18;
  margin-bottom: 0.7rem;
  text-wrap: balance;
}
.px-quiz__hint { max-width: 62ch; font-size: var(--fs-sm); color: var(--text-muted); margin-bottom: 2rem; }

.px-quiz__opts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; margin: 0; padding: 0; border: 0; }
.px-quiz__opt {
  display: grid;
  grid-template-columns: 30px auto minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
  min-height: 106px;
  padding: 1rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  cursor: pointer;
  background: var(--px-white);
  box-shadow: 0 4px 14px -12px rgba(31,52,82,0.4);
  transition: transform var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.px-quiz__opt::before {
  content: attr(data-option-index);
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--px-sand-soft);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 800;
}
.px-quiz__opt:hover {
  transform: translateY(-2px);
  border-color: var(--px-flow);
  background: var(--accent-tint);
  box-shadow: var(--sh-sm);
}
.px-quiz__opt input { position: absolute; opacity: 0; pointer-events: none; }
.px-quiz__mark {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--line-input);
  display: grid; place-items: center;
  flex-shrink: 0;
  transition: border-color var(--dur-fast), background-color var(--dur-fast);
}
.px-quiz__mark::after {
  content: "";
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--px-ivory);
  transform: scale(0);
  transition: transform var(--dur-fast) var(--ease-expo);
}
.px-quiz__opt:has(input:checked) {
  border-color: var(--px-flow);
  background: linear-gradient(125deg, rgba(36,87,230,0.085), rgba(11,143,135,0.04));
  box-shadow: 0 0 0 1px rgba(36,87,230,0.08), var(--sh-sm);
}
.px-quiz__opt:has(input:checked)::before { background: var(--px-flow); color: var(--px-white); }
.px-quiz__opt:has(input:checked) .px-quiz__mark { border-color: var(--px-flow); background: var(--px-flow); }
.px-quiz__opt:has(input:checked) .px-quiz__mark::after { transform: scale(1); }
.px-quiz__opt:has(input:focus-visible) { outline: 2px solid var(--px-flow); outline-offset: 2px; }
.px-quiz__opt-text { font-size: var(--fs-sm); color: var(--text-soft); line-height: 1.5; }
.px-quiz__opt:has(input:checked) .px-quiz__opt-text { color: var(--text); font-weight: 600; }

.px-quiz__foot {
  padding: clamp(1.2rem, 1rem + 0.8vw, 1.75rem) clamp(1.4rem, 1.1rem + 1.2vw, 2.5rem);
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between;
  gap: 1rem;
  background: var(--px-sand-soft);
}
.px-quiz__status { margin-right: auto; color: var(--text-muted); font-size: var(--fs-xs); }

/* Resultado */
.px-quiz__result { display: none; }
.px-quiz__result.is-visible { display: block; animation: pxFadeUp var(--dur-slow) var(--ease-expo) both; }
.px-score {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: center;
  padding-bottom: var(--sp-block);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--sp-block);
}
.px-score__dial { position: relative; width: 148px; height: 148px; }
.px-score__dial svg { transform: rotate(-90deg); }
.px-score__track { stroke: var(--line); }
.px-score__value {
  stroke: var(--px-teal);
  stroke-linecap: round;
  transition: stroke-dashoffset 1.1s var(--ease-expo);
}
.px-score__num {
  position: absolute; inset: 0;
  display: grid; place-content: center; text-align: center;
}
.px-score__num strong { font-size: 2.3rem; font-weight: 800; letter-spacing: -0.04em; line-height: 1; }
.px-score__num span { font-size: var(--fs-xs); color: var(--text-muted); font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }

.px-dims { display: grid; gap: 1.1rem; }
.px-dim__row { display: grid; gap: 0.4rem; }
.px-dim__top {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 1rem;
  font-size: var(--fs-sm);
}
.px-dim__name { font-weight: 700; }
.px-dim__val { font-variant-numeric: tabular-nums; color: var(--text-muted); font-size: var(--fs-xs); font-weight: 700; }
.px-dim__bar { height: 6px; background: var(--line); border-radius: 6px; overflow: hidden; }
.px-dim__bar i {
  display: block; height: 100%; width: 100%;
  border-radius: 6px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 900ms var(--ease-expo);
  transition-delay: var(--bar-delay, 0ms);
}
.px-dim--high i { background: var(--px-teal); }
.px-dim--mid  i { background: var(--px-copper); }
.px-dim--low  i { background: var(--danger, #C53B44); }

@media (max-width: 980px) {
  .px-quiz-layout { grid-template-columns: 1fr; }
  .px-quiz-guide { position: static; }
  .px-quiz-guide__list { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .px-quiz-guide__item { grid-template-columns: 28px; justify-items: center; text-align: center; }
}

@media (max-width: 680px) {
  .px-quiz-guide { display: none; }
  .px-quiz__opts { grid-template-columns: 1fr; }
  .px-quiz__opt { min-height: 0; }
  .px-quiz__status { width: 100%; }
}

/* ==========================================================================
   17. AGENDA
   ========================================================================== */
.px-booking {
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: var(--px-white);
  box-shadow: var(--sh-md);
  overflow: hidden;
}
.px-booking__head {
  padding: clamp(1.4rem, 1.1rem + 1vw, 2rem);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(110deg, rgba(36,87,230,0.06), rgba(11,143,135,0.035));
}
.px-booking__frame { min-height: 620px; background: var(--px-white); }
.px-booking__frame iframe { width: 100%; min-height: 620px; border: 0; display: block; }
.px-booking__fallback { padding: clamp(1.6rem, 1.2rem + 1.5vw, 2.75rem); }
.px-booking__planner { padding: clamp(1.6rem, 1.2rem + 1.5vw, 2.75rem); }
.px-calendar-form { display: grid; gap: 1rem; }
.px-calendar-form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.px-calendar-form__status {
  min-height: 1.3em;
  margin: -0.25rem 0 0;
  color: var(--text-muted);
  font-size: var(--fs-xs);
  line-height: 1.45;
}
.px-booking__alternatives {
  margin-top: 1.5rem;
  padding-top: 1.35rem;
  border-top: 1px solid var(--line);
}

.px-slotgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.6rem; }
.px-slot {
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  text-align: center;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--text-soft);
  background: var(--px-white);
}

@media (max-width: 620px) {
  .px-calendar-form__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   18. CONFIANZA Y COMPARATIVA
   ========================================================================== */
.px-trustbar {
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: center;
  gap: clamp(1.25rem, 4vw, 3.5rem);
  padding: clamp(1.25rem, 2vw, 1.75rem) 0;
}
.px-trustbar__item {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: -0.005em;
}
.px-trustbar__item svg { color: var(--px-flow); }

.px-sectors { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.px-sector {
  padding: 0.5rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-soft);
  background: var(--surface-card);
}

.px-compare { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.px-compare caption { text-align: left; margin-bottom: 1.25rem; color: var(--text-muted); font-size: var(--fs-sm); }
.px-compare th, .px-compare td {
  padding: 1rem 1.15rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.px-compare thead th {
  font-size: var(--fs-xs);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
  border-bottom-width: 2px;
}
.px-compare tbody th { font-weight: 700; color: var(--text); width: 24%; }
.px-compare td { color: var(--text-soft); }
.px-compare .is-praxia {
  background: var(--accent-tint);
  color: var(--text);
  font-weight: 600;
}
.px-compare thead .is-praxia { color: var(--px-flow); }
.px-compare__wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.px-guarantee {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
}
.px-guarantee__icon {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: var(--r-sm);
  background: var(--accent-tint);
  border: 1px solid var(--accent-line);
  color: var(--px-flow);
  flex-shrink: 0;
}
.px-bg-ink .px-guarantee__icon { color: var(--px-flow-200); }

/* ==========================================================================
   19. MODELOS DE COLABORACIÓN
   ========================================================================== */
.px-plans {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
  align-items: stretch;
}
.px-plan {
  position: relative;
  display: flex; flex-direction: column;
  padding: clamp(1.6rem, 1.2rem + 1.2vw, 2.25rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--px-white);
  box-shadow: var(--sh-sm);
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.px-plan:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.px-plan--featured {
  border-color: var(--px-flow);
  box-shadow: var(--sh-md);
}
.px-plan--featured::before {
  content: "";
  position: absolute; inset: 0 0 auto;
  height: 3px;
  background: var(--px-flow);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.px-plan__badge {
  position: absolute;
  top: -0.7rem; left: clamp(1.6rem, 1.2rem + 1.2vw, 2.25rem);
  padding: 0.3em 0.8em;
  background: var(--px-flow);
  color: var(--px-ivory);
  border-radius: var(--r-pill);
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.px-plan__step { font-size: var(--fs-xs); font-weight: 800; letter-spacing: 0.14em; color: var(--px-flow); margin-bottom: 0.75rem; }
.px-plan__name { font-size: var(--fs-h3); margin-bottom: 0.6rem; }
.px-plan__for { font-size: var(--fs-sm); color: var(--text-muted); margin-bottom: 1.4rem; }
.px-plan__meta {
  display: grid; gap: 0.5rem;
  padding: 1rem 0;
  margin-bottom: 1.4rem;
  border-block: 1px solid var(--line);
}
.px-plan__meta div { display: flex; justify-content: space-between; gap: 1rem; font-size: var(--fs-xs); }
.px-plan__meta dt { color: var(--text-muted); font-weight: 600; }
.px-plan__meta dd { margin: 0; font-weight: 700; text-align: right; }
.px-plan .px-check { margin-bottom: 1.75rem; }
.px-plan__cta { margin-top: auto; }

/* ==========================================================================
   20. RECURSO DESCARGABLE Y WHATSAPP
   ========================================================================== */
.px-magnet {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  padding: clamp(1.75rem, 1.2rem + 2vw, 3rem);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background:
    radial-gradient(90% 120% at 100% 0%, var(--px-sand-soft), transparent 60%),
    var(--px-white);
  box-shadow: var(--sh-sm);
}
.px-magnet__doc {
  position: relative;
  width: min(210px, 100%);
  aspect-ratio: 210 / 271;
  margin-inline: auto;
  border-radius: var(--r-sm);
  background: var(--px-white);
  border: 1px solid var(--line-strong);
  box-shadow: var(--sh-md);
  padding: 1.15rem 1rem;
  transform: rotate(-3deg);
  transition: transform var(--dur-slow) var(--ease-expo);
}
.px-magnet:hover .px-magnet__doc { transform: rotate(0deg) translateY(-4px); }
.px-magnet__doc::before {
  content: "";
  position: absolute; inset: 0 0 auto;
  height: 4px;
  background: var(--px-flow);
  border-radius: var(--r-sm) var(--r-sm) 0 0;
}
.px-magnet__doc b { display: block; font-size: 0.6875rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--px-flow); margin-bottom: 0.5rem; }
.px-magnet__doc strong { display: block; font-size: 0.9rem; line-height: 1.25; letter-spacing: -0.02em; margin-bottom: 0.75rem; }
.px-magnet__lines { display: grid; gap: 6px; }
.px-magnet__lines i { display: block; height: 4px; border-radius: 2px; background: var(--line); }
.px-magnet__lines i:nth-child(3n) { width: 65%; }

.px-wa {
  position: fixed;
  right: clamp(1rem, 3vw, 1.75rem);
  bottom: clamp(1rem, 3vw, 1.75rem);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.15rem;
  border-radius: var(--r-pill);
  background: var(--px-navy);
  color: var(--px-ivory);
  font-size: var(--fs-sm);
  font-weight: 700;
  box-shadow: 0 14px 34px -12px rgba(22, 32, 51, 0.5);
  transition: transform var(--dur-base) var(--ease-expo), background-color var(--dur-base);
}
.px-wa:hover { transform: translateY(-3px); background: var(--px-flow); }
.px-wa__label { display: inline; }
@media (max-width: 620px) {
  .px-wa { padding: 0.9rem; }
  .px-wa__label { display: none; }
}

/* ==========================================================================
   21. FOOTER
   ========================================================================== */
.px-footer {
  position: relative;
  padding-top: clamp(3.5rem, 6vw, 5.5rem);
  overflow: hidden;
}
.px-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: clamp(2.5rem, 4vw, 3.5rem);
}
.px-footer__brand { display: grid; gap: 1.25rem; align-content: start; max-width: 34ch; }
.px-footer__title {
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: 0.19em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.1rem;
}
.px-footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7rem; }
.px-footer__list a { font-size: var(--fs-sm); color: var(--text-soft); transition: color var(--dur-base) var(--ease-out); }
.px-footer__list a:hover { color: var(--accent); }
.px-footer__bar {
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}
.px-footer__bar ul { display: flex; flex-wrap: wrap; gap: 1.25rem; list-style: none; margin: 0; padding: 0; }
.px-footer__wordmark {
  font-size: clamp(3.5rem, 14vw, 12rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1px rgba(247, 249, 252, 0.11);
  text-align: center;
  user-select: none;
  padding-bottom: 0.08em;
  margin: 0;
}

/* ==========================================================================
   22. MOTION
   ========================================================================== */
@keyframes pxFadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--dur-reveal) var(--ease-expo), transform var(--dur-reveal) var(--ease-expo);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-revealed { opacity: 1; transform: none; }
[data-reveal="fade"]  { transform: none; }
[data-reveal="left"]  { transform: translateX(-22px); }
[data-reveal="right"] { transform: translateX(22px); }
[data-reveal="scale"] { transform: scale(0.975); }

.px-split { display: block; }
.px-split__line { display: block; overflow: hidden; padding-bottom: 0.16em; margin-bottom: -0.16em; }
.px-split__unit {
  display: inline-block;
  transform: translateY(110%);
  transition: transform var(--dur-reveal) var(--ease-expo);
  transition-delay: var(--unit-delay, 0ms);
  will-change: transform;
  backface-visibility: hidden;
}
.px-split__line > .px-split__unit { display: block; }
.px-split.is-revealed .px-split__unit { transform: translateY(0); }
.px-split__word { display: inline-block; }
.px-split__word:not(:last-child) { margin-right: 0.26em; }

.px-readword { color: rgba(22, 32, 51, 0.17); transition: color 220ms linear; }
.px-readword.is-lit { color: var(--text); }
.px-readword.is-lit.px-readword--accent { color: var(--px-flow); }
.px-bg-ink .px-readword { color: rgba(247, 249, 252, 0.2); }
.px-bg-ink .px-readword.is-lit { color: var(--px-ivory); }
.px-bg-ink .px-readword.is-lit.px-readword--accent { color: var(--px-flow-200); }

.px-draw {
  stroke-dasharray: var(--len, 400);
  stroke-dashoffset: var(--len, 400);
  transition: stroke-dashoffset 1.5s var(--ease-out);
  transition-delay: var(--draw-delay, 0ms);
}
.is-revealed .px-draw, .px-draw.is-revealed { stroke-dashoffset: 0; }

.px-pulse { animation: pxPulse 3.2s var(--ease-inout) infinite; }
@keyframes pxPulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }

/* ==========================================================================
   23. RESPONSIVE
   ========================================================================== */
@media (max-width: 1080px) {
  .px-hero__grid { grid-template-columns: minmax(0, 1fr); }
  .px-hero__panel { order: 2; }
  .px-capstrip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .px-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .px-method__card { width: min(82%, 560px); }
  .px-plans { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .px-plan:last-child { grid-column: 1 / -1; }
  .px-plan__meta div { display: grid; gap: 0.2rem; }
  .px-plan__meta dd { text-align: left; }
  .px-magnet { grid-template-columns: minmax(0, 1fr); }
  .px-magnet__doc { order: -1; }
}

/* El menú completo necesita ancho: se pasa a panel móvil antes de apretarse */
@media (max-width: 1120px) {
  .px-header__cta .px-btn--ghost { display: none; }
}

@media (max-width: 1040px) {
  :root { --header-h: 70px; }
  .px-nav, .px-header__cta .px-btn { display: none; }
  .px-burger { display: inline-flex; }
  .px-section-head--split { grid-template-columns: minmax(0, 1fr); align-items: start; }
  .px-grid--3, .px-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .px-case { grid-template-columns: minmax(0, 1fr); }
  .px-case__aside { border-left: 0; border-top: 1px solid var(--line); }
  .px-contrast { grid-template-columns: minmax(0, 1fr); }
  .px-deflist__row { grid-template-columns: minmax(0, 1fr); gap: 0.6rem; }
  .px-score { grid-template-columns: minmax(0, 1fr); justify-items: start; }

  .px-method__track { height: auto; }
  .px-method__sticky { position: static; height: auto; display: block; }
  .px-method__cards, .px-method__rail { display: none; }
  .px-method__stack { display: block; }
}

@media (max-width: 720px) {
  .px-grid--2, .px-grid--3, .px-grid--4 { grid-template-columns: minmax(0, 1fr); }
  .px-card--wide { grid-column: span 1; }
  .px-capstrip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .px-form__grid { grid-template-columns: minmax(0, 1fr); }
  .px-footer__grid { grid-template-columns: minmax(0, 1fr); }
  .px-hero__actions .px-btn { width: 100%; }
  .px-statement { max-width: none; }
  .px-tablist { border-radius: var(--r-md); }
  .px-quiz__foot { flex-direction: column-reverse; align-items: stretch; }
  .px-quiz__foot .px-btn { width: 100%; }
  .px-plans { grid-template-columns: minmax(0, 1fr); }
  .px-plan:last-child { grid-column: auto; }
  [data-reveal="left"], [data-reveal="right"] { transform: translateY(22px); }
}

@media (max-width: 480px) {
  .px-plan { padding: 1.35rem; border-radius: 14px; }
  .px-plan__badge { left: 1.35rem; }
  .px-plan__for { margin-bottom: 1.1rem; }
  .px-plan__meta { margin-bottom: 1.15rem; }
  .px-plan .px-check { margin-bottom: 1.4rem; }
}

@media (hover: none) {
  .px-plan:hover { transform: none; box-shadow: var(--sh-sm); }
  .px-plan--featured:hover { box-shadow: var(--sh-md); }
}

@media (max-width: 420px) { .px-capstrip { grid-template-columns: minmax(0, 1fr); } }

/* ==========================================================================
   24. ACCESIBILIDAD
   ========================================================================== */
.px-sr {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.px-hide { display: none !important; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  .px-split__unit { transform: none !important; }
  .px-readword { color: inherit !important; }
  .px-draw { stroke-dashoffset: 0 !important; }
  .px-method__track { height: auto !important; }
  .px-method__sticky { position: static !important; height: auto !important; display: block !important; }
  .px-method__cards, .px-method__rail { display: none !important; }
  .px-method__stack { display: block !important; }
}

@media print {
  .px-header, .px-mobile, .px-burger, .px-cta, .px-footer__wordmark, .px-wa { display: none !important; }
  body { background: #fff; color: #000; }
}