/* ==========================================================================
   SOM — Sistema de Organización de Muestras
   Hoja de estilos única. Sin framework, sin dependencias externas.

   Dirección: superficies de vidrio, sombras difusas y grandes, esquinas
   redondeadas consistentes, mucho aire y gradientes derivados de la marca
   (verde agua del sistema + azul del emblema). Nada de violeta genérico.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tipografías (servidas desde este mismo repositorio)
   -------------------------------------------------------------------------- */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/plexmono-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/plexmono-400-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/plexmono-500-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/plexmono-500-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* --------------------------------------------------------------------------
   2. Fichas de diseño
   -------------------------------------------------------------------------- */

:root {
  /* Fondo profundo con dos halos de color muy suaves */
  --bg: #05080f;
  --bg-2: #090f1d;
  --halo-1: rgba(45, 212, 191, 0.16);
  --halo-2: rgba(66, 141, 245, 0.14);

  /* Superficies de vidrio */
  --panel: rgba(255, 255, 255, 0.042);
  --panel-2: rgba(255, 255, 255, 0.075);
  --vidrio: rgba(9, 15, 29, 0.62);
  --linea: rgba(255, 255, 255, 0.085);
  --linea-fuerte: rgba(255, 255, 255, 0.16);

  --text: #f0f4fa;
  --muted: #96a3ba;

  --accent: #2dd4bf;
  --accent-2: #6bb3ff;
  --accent-soft: rgba(45, 212, 191, 0.13);
  --on-accent: #ffffff;

  /* Gradientes. El verde agua es del sistema, el azul es el del emblema. */
  --grad-boton: linear-gradient(135deg, #0e8377 0%, #1c6fd0 100%);
  --grad-boton-hover: linear-gradient(135deg, #12a394 0%, #2a80e8 100%);
  --grad-texto: linear-gradient(115deg, #2dd4bf 0%, #7cbcff 100%);
  --grad-linea: linear-gradient(
    90deg,
    transparent,
    rgba(45, 212, 191, 0.55) 30%,
    rgba(107, 179, 255, 0.55) 70%,
    transparent
  );

  /* Sombras difusas y grandes */
  --sh-1: 0 2px 10px rgba(0, 0, 0, 0.3);
  --sh-2: 0 14px 40px -12px rgba(0, 0, 0, 0.55);
  --sh-3: 0 30px 80px -20px rgba(0, 0, 0, 0.7);
  --sh-glow: 0 14px 44px -10px rgba(20, 160, 175, 0.45);

  --marcador: #f0b072;
  --marcador-borde: rgba(240, 176, 114, 0.5);
  --marcador-fondo: rgba(240, 176, 114, 0.12);

  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Consolas,
    'Liberation Mono', monospace;

  /* Radios consistentes */
  --r-xs: 8px;
  --r-sm: 12px;
  --r: 18px;
  --r-lg: 26px;
  --r-xl: 34px;
  --r-pill: 999px;

  /* Aire */
  --rail: clamp(1.25rem, 5vw, 4rem);
  --seccion-y: clamp(5.5rem, 11vw, 10rem);
  --measure: 62ch;
  --header-h: 4.5rem;

  --ease: cubic-bezier(0.22, 0.72, 0.24, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --t: 0.3s;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme='dark']) {
    --bg: #f7f9fc;
    --bg-2: #eaf0f8;
    --halo-1: rgba(13, 122, 111, 0.12);
    --halo-2: rgba(28, 111, 208, 0.1);

    --panel: rgba(255, 255, 255, 0.78);
    --panel-2: rgba(255, 255, 255, 0.95);
    --vidrio: rgba(255, 255, 255, 0.72);
    --linea: rgba(12, 24, 48, 0.09);
    --linea-fuerte: rgba(12, 24, 48, 0.16);

    --text: #0a1120;
    --muted: #55637c;

    --accent: #0d7a6f;
    --accent-2: #1c6fd0;
    --accent-soft: rgba(13, 122, 111, 0.1);

    --sh-1: 0 2px 8px rgba(15, 30, 60, 0.05);
    --sh-2: 0 14px 36px -12px rgba(15, 30, 60, 0.16);
    --sh-3: 0 32px 74px -22px rgba(15, 30, 60, 0.24);
    --sh-glow: 0 14px 40px -10px rgba(13, 122, 111, 0.32);

    --marcador: #8a5310;
    --marcador-borde: rgba(154, 91, 15, 0.45);
    --marcador-fondo: rgba(217, 131, 36, 0.1);
  }
}

:root[data-theme='light'] {
  --bg: #f7f9fc;
  --bg-2: #eaf0f8;
  --halo-1: rgba(13, 122, 111, 0.12);
  --halo-2: rgba(28, 111, 208, 0.1);

  --panel: rgba(255, 255, 255, 0.78);
  --panel-2: rgba(255, 255, 255, 0.95);
  --vidrio: rgba(255, 255, 255, 0.72);
  --linea: rgba(12, 24, 48, 0.09);
  --linea-fuerte: rgba(12, 24, 48, 0.16);

  --text: #0a1120;
  --muted: #55637c;

  --accent: #0d7a6f;
  --accent-2: #1c6fd0;
  --accent-soft: rgba(13, 122, 111, 0.1);

  --sh-1: 0 2px 8px rgba(15, 30, 60, 0.05);
  --sh-2: 0 14px 36px -12px rgba(15, 30, 60, 0.16);
  --sh-3: 0 32px 74px -22px rgba(15, 30, 60, 0.24);
  --sh-glow: 0 14px 40px -10px rgba(13, 122, 111, 0.32);

  --marcador: #8a5310;
  --marcador-borde: rgba(154, 91, 15, 0.45);
  --marcador-fondo: rgba(217, 131, 36, 0.1);
}

/* --------------------------------------------------------------------------
   3. Base
   -------------------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 2rem);
}

body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-synthesis-weight: none;
}

/* Los dos halos de color del fondo. Fijos, muy difusos, casi imperceptibles:
   dan profundidad sin convertirse en un degradado de moda. */
body::before {
  content: '';
  position: fixed;
  inset: -20%;
  z-index: -2;
  background: radial-gradient(
      62rem 42rem at 18% 6%,
      var(--halo-1),
      transparent 60%
    ),
    radial-gradient(54rem 40rem at 84% 14%, var(--halo-2), transparent 62%);
  pointer-events: none;
  animation: derivar 34s ease-in-out infinite alternate;
  will-change: transform;
}

/* La capa plana de abajo, que no se mueve. */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -3;
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg) 42%);
  pointer-events: none;
}

/* Los dos halos derivan muy despacio. Medio minuto por ciclo: se percibe
   que la pagina esta viva sin que nada distraiga de la lectura. */
@keyframes derivar {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(3%, -2.5%, 0) scale(1.08);
  }
  100% {
    transform: translate3d(-2.5%, 2%, 0) scale(1.04);
  }
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

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

a {
  color: var(--accent);
  text-decoration-color: color-mix(in srgb, var(--accent) 38%, transparent);
  text-underline-offset: 0.25em;
  text-decoration-thickness: 1px;
  transition: color var(--t) var(--ease),
    text-decoration-color var(--t) var(--ease),
    text-decoration-thickness var(--t) var(--ease);
}
a:hover {
  text-decoration-color: currentColor;
  text-decoration-thickness: 2px;
}

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

::selection {
  background: color-mix(in srgb, var(--accent) 30%, transparent);
  color: var(--text);
}

.saltar {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.85rem 1.4rem;
  border-radius: var(--r-pill);
  background: var(--grad-boton);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--sh-2);
}
.saltar:focus {
  left: 1rem;
  top: 1rem;
}

/* --------------------------------------------------------------------------
   4. Retícula
   -------------------------------------------------------------------------- */

.env {
  width: 100%;
  max-width: 80rem;
  margin-inline: auto;
  padding-inline: var(--rail);
}

.seccion {
  position: relative;
  padding-block: var(--seccion-y);
}

/* Un filete degradado en vez de una línea dura. */
.seccion + .seccion::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  translate: -50% 0;
  width: min(80rem, 100% - var(--rail) * 2);
  height: 1px;
  background: var(--grad-linea);
  opacity: 0.65;
}

.desparejo {
  display: grid;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
@media (min-width: 62rem) {
  .desparejo {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

.medida {
  max-width: var(--measure);
}

/* --------------------------------------------------------------------------
   5. Piezas de marca
   -------------------------------------------------------------------------- */

.regla-bicolor {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--grad-linea);
  opacity: 0.8;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 0.4em 0.9em;
  border: 1px solid var(--linea);
  border-radius: var(--r-pill);
  background: var(--panel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: all var(--t) var(--ease);
}

.chip--acento {
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  background: var(--accent-soft);
  color: var(--accent);
}

.rotulo {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.rotulo::before {
  content: '';
  width: 1.75rem;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-texto);
}

.estado {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--linea);
  border-radius: var(--r-pill);
  background: var(--panel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
}
.estado::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  animation: latir 2.8s var(--ease) infinite;
}

@keyframes latir {
  0%,
  100% {
    box-shadow: 0 0 0 4px var(--accent-soft);
  }
  50% {
    box-shadow: 0 0 0 8px transparent;
  }
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   6. Encabezado de vidrio
   -------------------------------------------------------------------------- */

.cabecera {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--vidrio);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease),
    box-shadow 0.4s var(--ease);
}

/* Al bajar, el vidrio se cierra un poco y aparece la sombra. */
.cabecera.pegada {
  border-bottom-color: var(--linea);
  box-shadow: var(--sh-1);
}

.cabecera__fila {
  display: flex;
  align-items: center;
  gap: 1rem;
  height: var(--header-h);
}

.marca {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-right: auto;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  transition: transform var(--t) var(--ease);
}
.marca:hover {
  transform: scale(1.04);
}
.marca img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.marca:hover img {
  transform: rotate(-10deg);
  box-shadow: var(--sh-glow);
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav a {
  position: relative;
  padding: 0.5rem 0.95rem;
  border-radius: var(--r-pill);
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--t) var(--ease);
}
.nav a:hover {
  color: var(--text);
  background: var(--panel-2);
  transform: translateY(-1px);
}
.nav a[aria-current='page'] {
  color: var(--accent);
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent);
}

@media (max-width: 46rem) {
  .cabecera__fila {
    height: auto;
    padding-block: 0.7rem;
    flex-wrap: wrap;
  }
  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: 0.2rem;
  }
  .nav::-webkit-scrollbar {
    display: none;
  }
}

.tema {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  flex: none;
  border: 1px solid var(--linea);
  border-radius: 50%;
  background: var(--panel);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--muted);
  cursor: pointer;
  transition: all var(--t) var(--ease);
}
.tema:hover {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
  transform: scale(1.08) rotate(12deg);
  box-shadow: var(--sh-glow);
}
.tema svg {
  width: 17px;
  height: 17px;
}
.tema .luna {
  display: none;
}
:root[data-theme='light'] .tema .luna,
:root[data-theme='dark'] .tema .sol {
  display: block;
}
:root[data-theme='light'] .tema .sol,
:root[data-theme='dark'] .tema .luna {
  display: none;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .tema .sol {
    display: none;
  }
  :root:not([data-theme]) .tema .luna {
    display: block;
  }
}

/* --------------------------------------------------------------------------
   7. Tipografía de página
   -------------------------------------------------------------------------- */

.titular {
  font-size: clamp(2.6rem, 1.3rem + 5.8vw, 5.75rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.titulo-2 {
  font-size: clamp(2rem, 1.3rem + 2.8vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.035em;
}

.titulo-3 {
  font-size: clamp(1.25rem, 1.05rem + 0.85vw, 1.65rem);
  font-weight: 650;
  letter-spacing: -0.022em;
}

.bajada {
  font-size: clamp(1.1rem, 1rem + 0.6vw, 1.4rem);
  line-height: 1.55;
  font-weight: 400;
  color: var(--muted);
}

.suave {
  color: var(--muted);
}

/* El único texto con gradiente de toda la página. Uno solo, si no pierde
   la gracia. */
.destacado {
  background: var(--grad-texto);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

/* --------------------------------------------------------------------------
   8. Botones
   -------------------------------------------------------------------------- */

.boton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.95rem 1.8rem;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  background: var(--grad-boton);
  color: #fff;
  font-family: inherit;
  font-size: 0.97rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--sh-2);
  transition: all var(--t) var(--ease);
}
.boton:hover {
  background: var(--grad-boton-hover);
  transform: scale(1.05) translateY(-2px);
  box-shadow: var(--sh-glow);
  color: #fff;
}
.boton:active {
  transform: scale(1.01);
}

.boton--linea {
  background: var(--panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-color: var(--linea-fuerte);
  color: var(--text);
  box-shadow: none;
}
.boton--linea:hover {
  background: var(--panel-2);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--text);
  box-shadow: var(--sh-2);
}

.botonera {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

/* --------------------------------------------------------------------------
   9. Tarjeta de vidrio — la base de casi todo
   -------------------------------------------------------------------------- */

.vidrio {
  border: 1px solid var(--linea);
  border-radius: var(--r-lg);
  background: var(--panel);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  box-shadow: var(--sh-2);
}

/* --------------------------------------------------------------------------
   10. Marco de las capturas
   -------------------------------------------------------------------------- */

.marco {
  position: relative;
  border: 1px solid var(--linea);
  border-radius: var(--r-lg);
  background: var(--panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--sh-2);
  overflow: hidden;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease),
    border-color 0.45s var(--ease);
}

.marco__barra {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.8rem 1.1rem;
  border-bottom: 1px solid var(--linea);
  background: var(--panel);
}

.marco__puntos {
  display: flex;
  gap: 0.4rem;
  flex: none;
}
.marco__puntos i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--linea-fuerte);
  transition: background-color 0.45s var(--ease);
}
.marco:hover .marco__puntos i:nth-child(1) {
  background: #ff6058;
}
.marco:hover .marco__puntos i:nth-child(2) {
  background: #ffbe2f;
}
.marco:hover .marco__puntos i:nth-child(3) {
  background: #2bc840;
}

.marco__url {
  flex: 1;
  min-width: 0;
  padding: 0.3rem 0.9rem;
  border-radius: var(--r-pill);
  background: color-mix(in srgb, var(--bg) 55%, transparent);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.45s var(--ease);
}

.marco img {
  width: 100%;
  transition: transform 0.7s var(--ease);
}

.marco--realce:hover {
  transform: translateY(-5px);
  box-shadow: var(--sh-3);
  border-color: color-mix(in srgb, var(--accent) 32%, var(--linea));
}
.marco--realce:hover img {
  transform: scale(1.02);
}
.marco--realce:hover .marco__url {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   11. Portada
   -------------------------------------------------------------------------- */

.portada {
  position: relative;
  padding-block: clamp(4rem, 9vw, 8rem) clamp(3.5rem, 7vw, 6rem);
}

.portada__emblema {
  width: clamp(84px, 12vw, 124px);
  height: auto;
  margin-bottom: 2rem;
  border-radius: 50%;
  filter: drop-shadow(0 20px 50px rgba(20, 160, 175, 0.4));
  animation: flotar 7s ease-in-out infinite;
}

@keyframes flotar {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.en-uso {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.5rem;
  font-size: 0.95rem;
  font-weight: 550;
  color: var(--text);
}
.en-uso svg {
  flex: none;
  width: 18px;
  height: 18px;
  padding: 2px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
}

.portada__pie {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  margin-top: 3rem;
}

/* --------------------------------------------------------------------------
   12. Video
   -------------------------------------------------------------------------- */

.video {
  position: relative;
  border: 1px solid var(--linea);
  border-radius: var(--r-lg);
  background: #05080f;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  box-shadow: var(--sh-3);
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
.video:hover {
  transform: translateY(-5px);
  box-shadow: var(--sh-3), var(--sh-glow);
}

.video video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #05080f;
}

.video__tapa {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 1.1rem;
  justify-items: center;
  border: 0;
  width: 100%;
  padding: 1.5rem;
  background: radial-gradient(
      ellipse 65% 65% at 50% 45%,
      rgba(20, 160, 175, 0.22),
      transparent 70%
    ),
    #05080f;
  color: #f0f4fa;
  font-family: inherit;
  cursor: pointer;
  transition: opacity 0.5s var(--ease), visibility 0.5s;
}

.video__tapa img {
  width: clamp(60px, 9vw, 88px);
  border-radius: 50%;
  transition: transform 0.45s var(--ease);
}
.video__tapa:hover img {
  transform: scale(1.06);
}

.video__play {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-size: 0.97rem;
  font-weight: 600;
  transition: all var(--t) var(--ease);
}
.video__tapa:hover .video__play {
  background: var(--grad-boton-hover);
  border-color: transparent;
  transform: scale(1.05);
  box-shadow: var(--sh-glow);
}

.video__dato {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.07em;
  color: rgba(240, 244, 250, 0.5);
}

.video.corriendo .video__tapa {
  opacity: 0;
  visibility: hidden;
}

/* --------------------------------------------------------------------------
   13. El problema
   -------------------------------------------------------------------------- */

.hoy {
  display: grid;
  gap: 1.25rem;
  margin-top: 3.5rem;
}
@media (min-width: 48rem) {
  .hoy {
    grid-template-columns: repeat(4, 1fr);
  }
}

.hoy__paso {
  position: relative;
  padding: 1.9rem 1.6rem;
  border: 1px solid var(--linea);
  border-radius: var(--r);
  background: var(--panel);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--sh-1);
  overflow: hidden;
  transition: all var(--t) var(--ease);
}
.hoy__paso::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--grad-texto);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
}
.hoy__paso:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--linea));
  box-shadow: var(--sh-2);
  background: var(--panel-2);
}
.hoy__paso:hover::before {
  transform: scaleX(1);
}

.hoy__n {
  display: block;
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--muted);
  transition: color var(--t) var(--ease);
}
.hoy__paso:hover .hoy__n {
  color: var(--accent);
}

.hoy__paso strong {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 1.1rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.hoy__paso p {
  font-size: 0.93rem;
  color: var(--muted);
  line-height: 1.6;
}

.remate {
  margin-top: 3rem;
  padding: 1.75rem 2rem;
  border: 1px solid var(--linea);
  border-left: 3px solid transparent;
  border-image: var(--grad-texto) 1;
  border-radius: var(--r);
  background: var(--panel);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-size: clamp(1.2rem, 1rem + 0.8vw, 1.6rem);
  line-height: 1.4;
  font-weight: 650;
  letter-spacing: -0.025em;
}

/* border-image rompe el radio: se lo devolvemos con un pseudo-elemento. */
@supports (border-image: linear-gradient(red, red) 1) {
  .remate {
    border: 1px solid var(--linea);
    border-image: none;
    position: relative;
    padding-left: 2.25rem;
  }
  .remate::before {
    content: '';
    position: absolute;
    left: 0;
    top: 1rem;
    bottom: 1rem;
    width: 3px;
    border-radius: var(--r-pill);
    background: var(--grad-texto);
  }
}

/* --------------------------------------------------------------------------
   14. Etapas
   -------------------------------------------------------------------------- */

.etapas {
  display: grid;
  gap: clamp(4rem, 9vw, 7.5rem);
}

/* En pantallas anchas las etapas se salen del contenedor de texto para que
   la captura gane pixeles reales. */
@media (min-width: 84rem) {
  .etapas {
    margin-inline: calc((100% - min(100vw - 4rem, 102rem)) / 2);
  }
}

.etapa {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: center;
}
@media (min-width: 62rem) {
  .etapa {
    grid-template-columns: minmax(0, 4.5fr) minmax(0, 7.5fr);
  }
  .etapa--espejo {
    grid-template-columns: minmax(0, 7.5fr) minmax(0, 4.5fr);
  }
  .etapa--espejo .etapa__texto {
    order: 2;
  }
  .etapa--espejo .etapa__figura {
    order: 1;
  }
}

.etapa__texto .chip {
  margin-bottom: 1.25rem;
}
.etapa:hover .chip {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  background: var(--accent-soft);
  color: var(--accent);
}

.etapa__texto p {
  margin-top: 1.1rem;
  color: var(--muted);
}

.clave {
  margin-top: 1.75rem;
  padding: 1.25rem 1.4rem;
  border: 1px solid var(--linea);
  border-radius: var(--r);
  background: var(--panel);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-size: 0.97rem;
  line-height: 1.6;
  transition: all var(--t) var(--ease);
}
.clave strong {
  color: var(--text);
  font-weight: 650;
}
.etapa:hover .clave {
  background: var(--panel-2);
  border-color: color-mix(in srgb, var(--accent) 26%, var(--linea));
  transform: translateY(-3px);
  box-shadow: var(--sh-1);
}

/* --------------------------------------------------------------------------
   15. "El dato viaja"
   -------------------------------------------------------------------------- */

.viaje {
  margin-top: clamp(4rem, 8vw, 6rem);
  padding: clamp(1.75rem, 4vw, 3rem);
  border: 1px solid var(--linea);
  border-radius: var(--r-xl);
  background: var(--panel);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--sh-2);
}

.viaje__cabeza {
  margin-bottom: 2.25rem;
}

.viaje__pista {
  display: grid;
  gap: 1rem;
}
@media (min-width: 52rem) {
  .viaje__pista {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

.parada {
  position: relative;
  padding: 1.3rem 1.35rem;
  border: 1px solid var(--linea);
  border-radius: var(--r);
  background: color-mix(in srgb, var(--bg) 45%, transparent);
  transition: all 0.5s var(--ease);
}

.parada.activa {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  background: var(--accent-soft);
  box-shadow: var(--sh-glow);
  transform: translateY(-4px);
}

.parada:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--linea));
}

@media (min-width: 52rem) {
  .parada + .parada::before {
    content: '';
    position: absolute;
    left: -1.25rem;
    top: 50%;
    width: 1rem;
    height: 2px;
    border-radius: 2px;
    background: var(--linea-fuerte);
    transition: background 0.5s var(--ease);
  }
  .parada.activa::before {
    background: var(--grad-texto);
  }
}

.parada__rot {
  display: block;
  margin-bottom: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--muted);
}

.parada__campo {
  min-height: 2.6rem;
  padding: 0.6rem 0.85rem;
  border: 1px dashed var(--linea-fuerte);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
  transition: all 0.4s var(--ease);
}
.parada.activa .parada__campo {
  border-style: solid;
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--text);
}

.parada__valor {
  opacity: 0;
  transform: translateY(4px);
  display: inline-block;
  transition: all 0.45s var(--ease-out);
}
.parada.activa .parada__valor {
  opacity: 1;
  transform: none;
}

.viaje__pie {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--linea);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.94rem;
  color: var(--muted);
}

.repetir {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border: 1px solid var(--linea-fuerte);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  cursor: pointer;
  transition: all var(--t) var(--ease);
}
.repetir:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  color: var(--accent);
  transform: scale(1.05);
  box-shadow: var(--sh-1);
}
.repetir:hover svg {
  transform: rotate(-180deg);
}
.repetir svg {
  transition: transform 0.6s var(--ease);
}

/* --------------------------------------------------------------------------
   16. El informe
   -------------------------------------------------------------------------- */

.hoja {
  position: relative;
  border: 1px solid var(--linea);
  border-radius: var(--r-xl);
  background: var(--panel);
  box-shadow: var(--sh-3);
  overflow: hidden;
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.hoja:hover {
  transform: translateY(-5px);
  box-shadow: var(--sh-3), var(--sh-glow);
}

.hoja img {
  width: 100%;
}

.sello {
  position: absolute;
  right: clamp(1rem, 3.5vw, 3rem);
  top: clamp(1rem, 3.5vw, 3rem);
  display: grid;
  place-items: center;
  gap: 0.2rem;
  width: clamp(88px, 13vw, 138px);
  aspect-ratio: 1;
  border: 2px solid color-mix(in srgb, var(--accent) 70%, transparent);
  border-radius: 50%;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--sh-glow);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: clamp(0.5rem, 1.05vw, 0.62rem);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-align: center;
  text-transform: uppercase;
  line-height: 1.3;
  opacity: 0;
  transform: rotate(-14deg) scale(1.9);
}

.sello b {
  font-size: 1.55em;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.hoja.visto .sello {
  animation: estampar 0.8s var(--ease-out) 0.45s both;
}

@keyframes estampar {
  0% {
    opacity: 0;
    transform: rotate(-14deg) scale(1.9);
  }
  55% {
    opacity: 1;
    transform: rotate(-14deg) scale(0.93);
  }
  75% {
    transform: rotate(-14deg) scale(1.04);
  }
  100% {
    opacity: 1;
    transform: rotate(-14deg) scale(1);
  }
}

.bifurca {
  display: grid;
  gap: 1.5rem;
  margin-top: clamp(3rem, 6vw, 4.5rem);
}
@media (min-width: 48rem) {
  .bifurca {
    grid-template-columns: 1fr 1fr;
  }
}

.bifurca__lado {
  padding: 2.1rem 1.9rem;
  border: 1px solid var(--linea);
  border-radius: var(--r-lg);
  background: var(--panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--sh-1);
  transition: all var(--t) var(--ease);
}
.bifurca__lado:hover {
  transform: translateY(-5px);
  background: var(--panel-2);
  border-color: color-mix(in srgb, var(--accent) 28%, var(--linea));
  box-shadow: var(--sh-2);
}

.bifurca__lado h3 {
  margin-bottom: 0.75rem;
}

.bifurca__lado p {
  color: var(--muted);
  font-size: 0.97rem;
}

.bifurca__lado .chip {
  margin-bottom: 1.25rem;
}
.bifurca__lado:hover .chip {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   17. Los tres argumentos
   -------------------------------------------------------------------------- */

.argumentos {
  display: grid;
  gap: 1.5rem;
  counter-reset: arg;
}
@media (min-width: 52rem) {
  .argumentos {
    grid-template-columns: repeat(3, 1fr);
  }
}

.argumento {
  position: relative;
  padding: 2.5rem 1.9rem 2.1rem;
  border: 1px solid var(--linea);
  border-radius: var(--r-lg);
  background: var(--panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--sh-1);
  transition: all var(--t) var(--ease);
}
.argumento::before {
  counter-increment: arg;
  content: counter(arg, decimal-leading-zero);
  position: absolute;
  top: 1.35rem;
  left: 1.9rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  background: var(--grad-texto);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
.argumento:hover {
  transform: translateY(-5px);
  background: var(--panel-2);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--linea));
  box-shadow: var(--sh-2);
}

.argumento h3 {
  margin-bottom: 0.7rem;
}

.argumento p {
  color: var(--muted);
  font-size: 0.97rem;
}

/* --------------------------------------------------------------------------
   17b. Confían — mención con nombre, con color propio para que no se
   pierda entre las tarjetas neutras del resto de la página.
   -------------------------------------------------------------------------- */

.confia {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem 1.75rem;
  border: 1px solid color-mix(in srgb, var(--accent) 38%, transparent);
  border-radius: var(--r-lg);
  background: var(--accent-soft);
  box-shadow: var(--sh-glow);
  font-size: 1.02rem;
  line-height: 1.6;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.confia:hover {
  transform: translateY(-3px);
}

.confia p {
  margin: 0;
}

.confia a {
  font-weight: 700;
}

.confia__marca {
  flex: none;
  width: 26px;
  height: 26px;
  padding: 5px;
  margin-top: 2px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
}

/* --------------------------------------------------------------------------
   18. Qué incluye
   -------------------------------------------------------------------------- */

.incluye {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 40rem) {
  .incluye {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 64rem) {
  .incluye {
    grid-template-columns: repeat(3, 1fr);
  }
}

.incluye__item {
  position: relative;
  padding: 1.9rem 1.7rem;
  border: 1px solid var(--linea);
  border-radius: var(--r-lg);
  background: var(--panel);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--sh-1);
  overflow: hidden;
  transition: all var(--t) var(--ease);
}
.incluye__item::after {
  content: '';
  position: absolute;
  inset: auto 0 0 0;
  height: 2px;
  background: var(--grad-texto);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
}
.incluye__item:hover {
  transform: translateY(-5px);
  background: var(--panel-2);
  border-color: color-mix(in srgb, var(--accent) 28%, var(--linea));
  box-shadow: var(--sh-2);
}
.incluye__item:hover::after {
  transform: scaleX(1);
}

.incluye__item h3 {
  margin-bottom: 0.6rem;
  font-size: 1.1rem;
  transition: color var(--t) var(--ease);
}
.incluye__item:hover h3 {
  color: var(--accent);
}

.incluye__item p {
  font-size: 0.93rem;
  color: var(--muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   19. Contacto
   -------------------------------------------------------------------------- */

.canales {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 40rem) {
  .canales {
    grid-template-columns: 1fr 1fr;
  }
}

.canal {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.6rem;
  border: 1px solid var(--linea);
  border-radius: var(--r-lg);
  background: var(--panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--sh-1);
  color: inherit;
  text-decoration: none;
  transition: all var(--t) var(--ease);
}
.canal:hover {
  transform: translateY(-5px);
  background: var(--panel-2);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--linea));
  box-shadow: var(--sh-2);
}

.canal svg {
  flex: none;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  color: var(--accent);
  transition: transform var(--t) var(--ease);
}
.canal:hover svg {
  transform: scale(1.12);
}

.canal strong {
  display: block;
  margin-bottom: 0.2rem;
  font-size: 1.05rem;
  font-weight: 650;
}

.canal span {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
  word-break: break-word;
}

.formulario {
  display: grid;
  gap: 1.15rem;
  padding: clamp(1.75rem, 4vw, 2.75rem);
  border: 1px solid var(--linea);
  border-radius: var(--r-xl);
  background: var(--panel);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--sh-2);
}

.campo {
  display: grid;
  gap: 0.5rem;
}

.campo label {
  font-size: 0.87rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.campo input,
.campo textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--linea-fuerte);
  border-radius: var(--r-sm);
  background: color-mix(in srgb, var(--bg) 55%, transparent);
  color: var(--text);
  font-family: inherit;
  font-size: 0.97rem;
  transition: all var(--t) var(--ease);
}
.campo input::placeholder,
.campo textarea::placeholder {
  color: var(--muted);
}
.campo input:hover,
.campo textarea:hover {
  border-color: color-mix(in srgb, var(--accent) 30%, var(--linea-fuerte));
}
.campo input:focus,
.campo textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.campo textarea {
  min-height: 8.5rem;
  resize: vertical;
}

.doble {
  display: grid;
  gap: 1.15rem;
}
@media (min-width: 34rem) {
  .doble {
    grid-template-columns: 1fr 1fr;
  }
}

.aviso-form {
  font-size: 0.86rem;
  color: var(--muted);
}

.form-estado {
  padding: 0.9rem 1.2rem;
  border: 1px solid var(--linea-fuerte);
  border-radius: var(--r-sm);
  background: var(--panel-2);
  font-size: 0.92rem;
}
.form-estado[hidden] {
  display: none;
}

.miel {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   20. Preguntas frecuentes
   Con <details>: se abren y cierran sin una línea de JavaScript, y el
   buscador lee el contenido aunque estén cerradas.
   -------------------------------------------------------------------------- */

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

.faq__item {
  border: 1px solid var(--linea);
  border-radius: var(--r-lg);
  background: var(--panel);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--sh-1);
  overflow: hidden;
  transition: all var(--t) var(--ease);
}
.faq__item:hover {
  border-color: color-mix(in srgb, var(--accent) 28%, var(--linea));
  background: var(--panel-2);
  box-shadow: var(--sh-2);
}
.faq__item[open] {
  border-color: color-mix(in srgb, var(--accent) 32%, var(--linea));
  box-shadow: var(--sh-2);
}

.faq__item summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.4rem 1.6rem;
  cursor: pointer;
  font-size: clamp(1rem, 0.95rem + 0.35vw, 1.15rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  list-style: none;
  transition: color var(--t) var(--ease);
}
.faq__item summary::-webkit-details-marker {
  display: none;
}
.faq__item summary:hover,
.faq__item[open] summary {
  color: var(--accent);
}

/* El signo de más que gira hasta ser una cruz. */
.faq__item summary::after {
  content: '';
  flex: none;
  margin-left: auto;
  width: 1.5rem;
  height: 1.5rem;
  background: currentColor;
  transition: transform 0.4s var(--ease);
  -webkit-mask: no-repeat center /
    contain
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
  mask: no-repeat center / contain
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E");
}
.faq__item[open] summary::after {
  transform: rotate(135deg);
}

.faq__cuerpo {
  padding: 0 1.6rem 1.5rem;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.65;
}

@media (prefers-reduced-motion: no-preference) {
  .faq__item[open] .faq__cuerpo {
    animation: desplegar 0.35s var(--ease-out) both;
  }
}

@keyframes desplegar {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
}

/* --------------------------------------------------------------------------
   21. Marcadores para completar
   -------------------------------------------------------------------------- */

.marcador {
  display: inline-block;
  padding: 0.1em 0.6em;
  border: 1px dashed var(--marcador-borde);
  border-radius: var(--r-pill);
  background: var(--marcador-fondo);
  font-family: var(--font-mono);
  font-size: 0.86em;
  color: var(--marcador);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   22. Cierre de página
   -------------------------------------------------------------------------- */

.siguiente {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: clamp(1.75rem, 4vw, 2.75rem);
  border: 1px solid var(--linea);
  border-radius: var(--r-xl);
  background: var(--panel);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--sh-2);
  color: inherit;
  text-decoration: none;
  transition: all var(--t) var(--ease);
}
.siguiente:hover {
  transform: translateY(-5px) scale(1.008);
  background: var(--panel-2);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--linea));
  box-shadow: var(--sh-3);
}
.siguiente small {
  display: block;
  margin-bottom: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.siguiente strong {
  font-size: clamp(1.2rem, 1rem + 0.85vw, 1.65rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}
.siguiente svg {
  flex: none;
  width: 26px;
  height: 26px;
  color: var(--accent);
  transition: transform var(--t) var(--ease);
}
.siguiente:hover svg {
  transform: translateX(6px);
}

.pie {
  position: relative;
  padding-block: 3rem 3.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.pie::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  translate: -50% 0;
  width: min(80rem, 100% - var(--rail) * 2);
  height: 1px;
  background: var(--grad-linea);
  opacity: 0.65;
}

.pie__fila {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.pie a {
  color: var(--muted);
}
.pie a:hover {
  color: var(--accent);
}

.descargo {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--linea);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--muted);
  max-width: 62ch;
}

/* --------------------------------------------------------------------------
   23. Scroll reveal
   Se dispara al bajar y queda. Tres variantes: subir, escala y fundido.
   La clase .anim la pone el script del <head>, antes del primer pintado, para
   que no haya un parpadeo de contenido visible.
   -------------------------------------------------------------------------- */

.anim [data-rev] {
  opacity: 0;
  transition: opacity 0.75s var(--ease-out), transform 0.75s var(--ease-out);
  transition-delay: var(--d, 0ms);
  will-change: opacity, transform;
}

.anim [data-rev='subir'] {
  transform: translateY(32px);
}

.anim [data-rev='escala'] {
  transform: scale(0.955);
}

.anim [data-rev='fundido'] {
  transform: none;
}

.anim [data-rev].visto {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   24. Ampliar capturas
   Una captura de 1920px metida en una columna de 700px no se lee. Cada una
   lleva un enlace a la imagen completa: sin JavaScript la abre en una
   pestaña, con JavaScript la abre en el visor de acá abajo.
   -------------------------------------------------------------------------- */

.lupa {
  position: absolute;
  right: 0.9rem;
  bottom: 0.9rem;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--r-pill);
  background: rgba(10, 16, 30, 0.72);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  color: #f0f4fa;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--sh-2);
  opacity: 0;
  transform: translateY(8px) scale(0.96);
  transition: all var(--t) var(--ease);
}
.lupa svg {
  width: 16px;
  height: 16px;
}

/* Aparece al pasar el cursor por la captura, y siempre que reciba foco de
   teclado. En pantallas sin cursor queda visible fijo. */
.marco:hover .lupa,
.hoja:hover .lupa,
.lupa:focus-visible {
  opacity: 1;
  transform: none;
}
.lupa:hover {
  background: var(--grad-boton-hover);
  border-color: transparent;
  transform: scale(1.06);
  box-shadow: var(--sh-glow);
}

@media (hover: none) {
  .lupa {
    opacity: 1;
    transform: none;
  }
}

/* La imagen misma también abre el visor. */
.marco img,
.hoja img {
  cursor: zoom-in;
}

/* --- El visor ------------------------------------------------------------ */

.visor {
  width: 100vw;
  max-width: 100vw;
  height: 100vh;
  max-height: 100vh;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: #f0f4fa;
  overflow: hidden;
}

.visor::backdrop {
  background: rgba(3, 6, 14, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.visor__caja {
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100%;
}

.visor__barra {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem clamp(0.9rem, 3vw, 1.75rem);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(10, 16, 30, 0.55);
}

.visor__titulo {
  flex: 1;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: rgba(240, 244, 250, 0.75);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.visor__btn {
  display: grid;
  place-items: center;
  flex: none;
  width: 2.4rem;
  height: 2.4rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  color: inherit;
  cursor: pointer;
  transition: all var(--t) var(--ease);
}
.visor__btn:hover:not(:disabled) {
  background: var(--grad-boton-hover);
  border-color: transparent;
  transform: scale(1.08);
}
.visor__btn:disabled {
  opacity: 0.3;
  cursor: default;
}
.visor__btn svg {
  width: 18px;
  height: 18px;
}

.visor__lienzo {
  overflow: auto;
  display: grid;
  place-items: center;
  padding: clamp(0.5rem, 2vw, 1.5rem);
  overscroll-behavior: contain;
}

.visor__lienzo img {
  border-radius: var(--r-sm);
  box-shadow: 0 30px 90px -20px rgba(0, 0, 0, 0.8);
  transition: opacity 0.25s var(--ease);
}

/* Ajustada a la pantalla */
.visor:not(.cerca) .visor__lienzo img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  cursor: zoom-in;
}

/* Al tamaño real: el lienzo pasa a hacer de ventana y se arrastra. */
.visor.cerca .visor__lienzo {
  place-items: start;
}
.visor.cerca .visor__lienzo img {
  max-width: none;
  max-height: none;
  width: auto;
  cursor: grab;
}
.visor.cerca .visor__lienzo.arrastrando img {
  cursor: grabbing;
}

.visor__pie {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding: 0.85rem clamp(0.9rem, 3vw, 1.75rem);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(10, 16, 30, 0.55);
  font-size: 0.8rem;
  color: rgba(240, 244, 250, 0.6);
}

.visor__ayuda {
  font-family: var(--font-mono);
  font-size: 0.72rem;
}
.visor__ayuda kbd {
  display: inline-block;
  padding: 0.1em 0.45em;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.07);
  font: inherit;
}

.visor__cuenta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

/* --------------------------------------------------------------------------
   25. Movimiento ambiente
   Cosas que se mueven solas, sin que nadie toque nada. Todas lentas y de
   baja amplitud: la página tiene que estar viva, no inquieta. Todo corre
   sobre transform y opacity, que el navegador compone en la placa de video.
   -------------------------------------------------------------------------- */

/* --- Barra de avance del scroll, arriba de todo --------------------------- */

.avance {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 60;
  height: 2px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--grad-texto);
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 60%, transparent);
  pointer-events: none;
}

/* --- Chispas que suben por la portada ------------------------------------ */

.chispas {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.portada > .env {
  position: relative;
  z-index: 1;
}

.chispa {
  position: absolute;
  bottom: -12px;
  width: var(--tam, 4px);
  height: var(--tam, 4px);
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  filter: blur(0.4px);
  animation: subir-chispa var(--vida, 18s) linear var(--espera, 0s) infinite;
}

@keyframes subir-chispa {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0);
  }
  12% {
    opacity: var(--brillo, 0.5);
  }
  85% {
    opacity: var(--brillo, 0.5);
  }
  100% {
    opacity: 0;
    transform: translate3d(var(--desvio, 20px), calc(var(--alto, 60vh) * -1), 0);
  }
}

/* --- El texto con gradiente respira -------------------------------------- */

.destacado {
  background-size: 220% 100%;
  animation: correr-gradiente 9s ease-in-out infinite alternate;
}

@keyframes correr-gradiente {
  from {
    background-position: 0% 50%;
  }
  to {
    background-position: 100% 50%;
  }
}

/* --- Los filetes de sección fluyen --------------------------------------- */

.seccion + .seccion::before,
.pie::before,
.regla-bicolor {
  background-size: 220% 100%;
  animation: fluir 14s linear infinite;
}

@keyframes fluir {
  from {
    background-position: 200% 0;
  }
  to {
    background-position: 0% 0;
  }
}

/* --- Un brillo barre los botones primarios cada tanto --------------------- */

.boton:not(.boton--linea) {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.boton:not(.boton--linea)::after {
  content: '';
  position: absolute;
  top: -50%;
  bottom: -50%;
  width: 45%;
  left: -60%;
  z-index: -1;
  background: linear-gradient(
    100deg,
    transparent,
    rgba(255, 255, 255, 0.28),
    transparent
  );
  transform: skewX(-18deg);
  animation: barrer 5.5s ease-in-out infinite;
}

@keyframes barrer {
  0%,
  62% {
    left: -60%;
  }
  92%,
  100% {
    left: 130%;
  }
}

/* --- El anillo del emblema late ------------------------------------------ */

.portada__emblema {
  position: relative;
}

.aureola {
  position: absolute;
  left: 0;
  top: 0;
  width: clamp(84px, 12vw, 124px);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  pointer-events: none;
  animation: expandir 4.5s var(--ease-out) infinite;
}
.aureola:nth-of-type(2) {
  animation-delay: 1.5s;
}
.aureola:nth-of-type(3) {
  animation-delay: 3s;
}

@keyframes expandir {
  0% {
    opacity: 0.55;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(1.75);
  }
}

/* --- Reflejo que sigue al cursor en las tarjetas -------------------------- */
/* Se pinta sólo cuando el cursor está encima, así no cuesta nada el resto
   del tiempo. */

.hoy__paso,
.incluye__item,
.argumento,
.bifurca__lado,
.canal,
.parada {
  position: relative;
}

.hoy__paso::after,
.incluye__item::before,
.argumento::after,
.bifurca__lado::after,
.canal::after,
.parada::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  background: radial-gradient(
    16rem 16rem at var(--mx, 50%) var(--my, 50%),
    color-mix(in srgb, var(--accent) 16%, transparent),
    transparent 62%
  );
}

.hoy__paso:hover::after,
.incluye__item:hover::before,
.argumento:hover::after,
.bifurca__lado:hover::after,
.canal:hover::after,
.parada:hover::after {
  opacity: 1;
}

/* El filete inferior de "qué incluye" tiene que quedar por encima del
   reflejo. */
.incluye__item::after {
  z-index: 1;
}

/* --- La tapa del video respira ------------------------------------------- */

.video__tapa img {
  animation: flotar 6s ease-in-out infinite;
}

/* --------------------------------------------------------------------------
   26. Movimiento reducido — todo se apaga, nada se pierde
   -------------------------------------------------------------------------- */

@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;
  }
  .anim [data-rev],
  .anim [data-rev].visto {
    opacity: 1;
    transform: none;
  }
  .sello {
    opacity: 1;
    transform: rotate(-14deg) scale(1);
  }
  .portada__emblema,
  .chispa,
  .aureola,
  .destacado,
  .boton::after,
  .video__tapa img,
  .seccion + .seccion::before,
  .pie::before,
  .regla-bicolor,
  body::before {
    animation: none !important;
  }
  .chispas,
  .aureola {
    display: none;
  }
  .avance {
    display: none;
  }
  .boton:hover,
  .marco--realce:hover,
  .hoy__paso:hover,
  .incluye__item:hover,
  .argumento:hover,
  .canal:hover,
  .bifurca__lado:hover,
  .siguiente:hover,
  .parada:hover,
  .hoja:hover,
  .video:hover {
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   27. Impresión
   -------------------------------------------------------------------------- */

@media print {
  .cabecera,
  .video__tapa,
  .siguiente,
  .tema,
  .repetir,
  .lupa,
  .avance {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  body::before {
    display: none;
  }
  .anim [data-rev] {
    opacity: 1;
    transform: none;
  }
}