/* ==========================================================================
   Pliegue | hoja de estilos
   Idea: la página entera es papel doblado. Los pliegues separan las
   secciones y la servilleta del inicio se dobla de verdad.
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  --cobalto: #2A3EE0;
  --cobalto-hondo: #1A2AB0;
  --tinta: #101A5C;
  --papel: #F6F7FC;
  --blanco: #FFFFFF;
  --niebla: #DDE3FF;
  --limon: #FFE14D;
  --pomelo: #FF6F91;
  --salvia: #9BD3B5;
  --kraft: #C8AE86;
  --error: #B3123F;

  --f-display: "Bricolage Grotesque", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --f-texto: "Newsreader", Georgia, "Times New Roman", serif;

  /* Estampado en relieve de las servilletas */
  --puntos: radial-gradient(circle at center, rgba(42, 62, 224, .22) .9px, transparent 1.5px);

  --radio-pildora: 999px;
  --radio-campo: 8px;
  --ancho: 76rem;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --seccion: clamp(4rem, 9vw, 7.5rem);
}

/* ---------- 2. Base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--papel);
  color: var(--tinta);
  font-family: var(--f-texto);
  font-size: 1.125rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

[hidden] { display: none !important; }

h1, h2, h3 {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 800;
  font-stretch: 75%;
  font-variation-settings: "wdth" 75;
  line-height: 1.02;
  letter-spacing: -.02em;
}

h2 { font-size: clamp(2.4rem, 5vw, 4.25rem); }
h3 { font-size: 1.6rem; line-height: 1.1; letter-spacing: -.01em; }

p { margin: 0; }

a { color: var(--cobalto); }

:focus-visible {
  outline: 3px solid var(--cobalto);
  outline-offset: 3px;
}
.hero :focus-visible,
.site-header :focus-visible,
.on-cobalt :focus-visible,
.site-footer :focus-visible {
  outline-color: var(--limon);
}
.hoja :focus-visible { outline-color: var(--cobalto); }

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

.skip {
  position: absolute;
  left: 1rem; top: -4rem;
  z-index: 100;
  padding: .6rem 1rem;
  background: var(--limon);
  color: var(--tinta);
  font-family: var(--f-display);
  font-weight: 700;
  border-radius: var(--radio-campo);
  transition: top .15s;
}
.skip:focus { top: 1rem; }

.wrap {
  width: min(100% - 2 * var(--gutter), var(--ancho));
  margin-inline: auto;
}

/* ---------- 3. Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .8em 1.6em;
  border: 2px solid transparent;
  border-radius: var(--radio-pildora);
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.1;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .15s, color .15s, border-color .15s;
}
.btn:active { transform: translateY(1px); }
.btn-sm { padding: .55em 1.2em; font-size: 1rem; }

.btn-primary { background: var(--limon); color: var(--tinta); }
.btn-primary:hover { background: var(--blanco); }

.btn-ghost { border-color: currentColor; color: var(--blanco); }
.btn-ghost:hover { background: var(--blanco); color: var(--cobalto); border-color: var(--blanco); }

.btn-dark { background: var(--cobalto); color: var(--blanco); }
.btn-dark:hover { background: var(--tinta); }
.btn-dark:disabled { opacity: .6; cursor: progress; }

/* ---------- 4. Cabecera ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--cobalto);
  color: var(--blanco);
  border-bottom: 1px solid rgba(255, 255, 255, .18);
  transition: box-shadow .2s;
}
.site-header.is-scrolled {
  box-shadow: 0 12px 24px -16px rgba(6, 10, 60, .7);
}

.header-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  color: inherit;
  text-decoration: none;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.7rem;
  font-stretch: 75%;
  font-variation-settings: "wdth" 75;
  letter-spacing: -.02em;
}

.nav ul {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav a:not(.btn) {
  color: inherit;
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1rem;
  text-decoration: none;
  padding-block: .25rem;
  border-bottom: 2px solid transparent;
}
.nav a:not(.btn):hover,
.nav a[aria-current="true"] {
  border-bottom-color: var(--limon);
}

.nav-toggle {
  display: none;
  padding: .5rem 1rem;
  border: 2px solid currentColor;
  border-radius: var(--radio-pildora);
  background: transparent;
  color: inherit;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
}

/* ---------- 5. Mantel de cuadros (hero y contacto) ---------- */
.gingham {
  background-color: var(--cobalto);
  background-image:
    linear-gradient(rgba(255, 255, 255, .07) 50%, transparent 50%),
    linear-gradient(90deg, rgba(255, 255, 255, .07) 50%, transparent 50%);
  background-size: 64px 64px;
  color: var(--blanco);
}

/* ---------- 6. Hero ---------- */
.hero { overflow: hidden; }

.hero-in {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: center;
  gap: clamp(1rem, 4vw, 4rem);
  padding-block: clamp(3rem, 7vw, 6rem) clamp(4rem, 8vw, 7rem);
}

.hero h1 {
  font-size: clamp(3.5rem, 8.2vw, 7rem);
  line-height: 1;
}

.lede {
  max-width: 34ch;
  margin: 1.5rem 0 2rem;
  font-size: clamp(1.2rem, 1vw + 1rem, 1.5rem);
  line-height: 1.5;
}

.actions { display: flex; flex-wrap: wrap; gap: .9rem; }

.hero-napkin {
  display: grid;
  justify-items: center;
  gap: 1rem;
}

/* --- La servilleta que se dobla --- */
.stage {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  min-height: clamp(20rem, 40vw, 29rem);
  perspective: 1500px;
}

.napkin {
  --s: clamp(13rem, 26vw, 19rem);
  --h: calc(var(--s) / 2);
  --f1: 0;
  --f2: 0;
  position: relative;
  width: var(--s);
  height: var(--s);
  transform-style: preserve-3d;
  transform:
    rotateX(42deg) rotateZ(-16deg)
    translate(calc(var(--f2) * var(--h) / 2), calc(var(--f1) * var(--h) / 2));
}

.napkin-shadow {
  position: absolute;
  left: 0; top: 0;
  width: calc(var(--s) * (1 - var(--f2) * .5));
  height: calc(var(--s) * (1 - var(--f1) * .5));
  background: rgba(6, 10, 60, .55);
  filter: blur(16px);
  transform: translate3d(14px, 16px, -4px);
}

.col {
  position: absolute;
  top: 0;
  width: var(--h);
  height: var(--s);
  transform-style: preserve-3d;
}
.col-left { left: 0; }
.col-right {
  left: var(--h);
  transform-origin: left center;
  transform:
    translateZ(calc(var(--f2) * 4px))
    rotateY(calc(var(--f2) * -180deg));
}

.q {
  position: absolute;
  left: 0;
  width: 100%;
  height: 50%;
  transform-style: preserve-3d;
}
.q-top { top: 0; }
.q-bottom {
  top: 50%;
  transform-origin: top center;
  transform:
    translateZ(calc(var(--f1) * 2px))
    rotateX(calc(var(--f1) * 180deg));
}

.q i {
  position: absolute;
  inset: 0;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  background-color: var(--blanco);
  background-image: var(--puntos);
  background-size: calc(var(--h) / 10) calc(var(--h) / 10);
  box-shadow: 0 0 0 .6px var(--blanco);
}
.q .b {
  transform: rotateY(180deg);
  background-color: #EDF0FD;
  box-shadow: 0 0 0 .6px #EDF0FD;
}

/* --- Control de doblez --- */
.fold-control {
  display: grid;
  gap: .35rem;
  width: min(24rem, 100%);
  font-family: var(--f-display);
}
.fold-control label { font-weight: 600; font-size: 1.05rem; }

.fold-control input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2.25rem;
  margin: 0;
  background: transparent;
  cursor: grab;
}
.fold-control input[type="range"]:active { cursor: grabbing; }
.fold-control input[type="range"]::-webkit-slider-runnable-track {
  height: .5rem;
  border-radius: 99px;
  background: rgba(255, 255, 255, .38);
}
.fold-control input[type="range"]::-moz-range-track {
  height: .5rem;
  border-radius: 99px;
  background: rgba(255, 255, 255, .38);
}
.fold-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 1.75rem; height: 1.75rem;
  margin-top: -.625rem;
  border: 3px solid var(--tinta);
  border-radius: 50%;
  background: var(--limon);
}
.fold-control input[type="range"]::-moz-range-thumb {
  width: 1.75rem; height: 1.75rem;
  border: 3px solid var(--tinta);
  border-radius: 50%;
  background: var(--limon);
}

.pasos-doblez { display: flex; justify-content: space-between; }
.pasos-doblez button {
  padding: .25rem 0;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--blanco);
  font: 600 1rem var(--f-display);
  cursor: pointer;
}
.pasos-doblez button[aria-pressed="true"] { border-bottom-color: var(--limon); }

.fold-size {
  font-family: var(--f-texto);
  font-size: 1rem;
  opacity: .9;
}

/* ---------- 7. Secciones y pliegues ---------- */
.section { padding-block: var(--seccion); }
.tono-niebla { background: var(--niebla); }
.tono-blanco { background: var(--blanco); }

/* El pliegue: una línea marcada y una sombra que cae hacia la sección */
.fold-top { position: relative; }
.fold-top::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2.25rem;
  border-top: 1px solid rgba(16, 26, 92, .22);
  background: linear-gradient(rgba(16, 26, 92, .11), transparent);
  pointer-events: none;
}
.on-cobalt.fold-top::before {
  border-top-color: rgba(255, 255, 255, .28);
  background: linear-gradient(rgba(6, 10, 60, .4), transparent);
}

.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.section-head p,
.intro {
  max-width: 40ch;
  margin-top: 1rem;
  font-size: 1.25rem;
  line-height: 1.55;
}

/* ---------- 8. Formatos ---------- */
.filtros-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}
.filtros {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.chip {
  padding: .45em 1.1em;
  border: 2px solid var(--tinta);
  border-radius: var(--radio-pildora);
  background: transparent;
  color: var(--tinta);
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color .15s, color .15s;
}
.chip:hover { background: var(--niebla); }
.chip[aria-pressed="true"] { background: var(--tinta); color: var(--blanco); }

.conteo {
  font-family: var(--f-display);
  font-weight: 500;
  opacity: .75;
}

.catalogo {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: clamp(2rem, 5vw, 5rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.prod {
  display: grid;
  grid-template-columns: 9.5rem 1fr;
  gap: 1.5rem;
  padding-block: 1.75rem;
  border-top: 1px solid rgba(16, 26, 92, .25);
}

.prod-shape {
  display: grid;
  place-items: center;
  width: 9.5rem;
  height: 9.5rem;
  border-radius: .5rem;
  background: var(--niebla);
}

/* 1 cm real = 3,2 px dibujados */
.paper {
  display: grid;
  place-items: center;
  width: calc(var(--cw) * 3.2px);
  height: calc(var(--ch) * 3.2px);
  border-radius: 2px;
  background-color: var(--tone, #FFFFFF);
  background-image: var(--puntos);
  background-size: 7px 7px;
  box-shadow: 0 1px 0 rgba(16, 26, 92, .2), 0 12px 14px -10px rgba(16, 26, 92, .6);
  color: var(--tinta);
  font-family: var(--f-display);
  font-weight: 800;
  font-stretch: 75%;
  font-size: 1rem;
  line-height: 1;
  text-align: center;
}
.paper span { padding: .1rem .35rem; background: var(--tone, #FFFFFF); }

.prod h3 { margin-bottom: .4rem; font-size: 1.9rem; }
.prod p { margin-bottom: .9rem; font-size: 1.05rem; line-height: 1.5; }

.specs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  margin: 0 0 1rem;
}
.specs div { display: flex; flex-direction: column; }
.specs dt { font-family: var(--f-display); font-size: .9rem; font-weight: 500; opacity: .72; }
.specs dd { margin: 0; font-family: var(--f-display); font-weight: 700; font-size: 1.05rem; }

.link-btn {
  padding: 0 0 .1rem;
  border: 0;
  border-bottom: 2px solid var(--cobalto);
  background: none;
  color: var(--cobalto);
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
}
.link-btn:hover { color: var(--tinta); border-bottom-color: var(--tinta); }

/* ---------- 9. Personalizadas ---------- */
.custom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
}
.custom-controls { display: grid; gap: 1.5rem; justify-items: start; }
.custom-controls .field { width: 100%; max-width: 26rem; }
.custom-controls .intro { margin-top: -.25rem; }

.field { display: grid; gap: .35rem; }
.field label,
fieldset legend {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1rem;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: .75rem .9rem;
  border: 2px solid rgba(16, 26, 92, .35);
  border-radius: var(--radio-campo);
  background: var(--blanco);
  color: var(--tinta);
  font: inherit;
  font-size: 1.05rem;
}
.field textarea { resize: vertical; min-height: 6rem; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--cobalto); }

fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
fieldset legend { padding: 0; margin-bottom: .6rem; }

.swatch-row, .opciones-row { display: flex; flex-wrap: wrap; gap: .7rem; }

.swatch { position: relative; cursor: pointer; }
.swatch input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.swatch .dot {
  display: block;
  width: 2.6rem; height: 2.6rem;
  border-radius: 50%;
  background: var(--c);
  box-shadow: inset 0 0 0 1px rgba(16, 26, 92, .3);
  transition: transform .15s;
}
.swatch:hover .dot { transform: scale(1.06); }
.swatch input:checked + .dot { box-shadow: inset 0 0 0 1px rgba(16, 26, 92, .3), 0 0 0 3px var(--niebla), 0 0 0 5px var(--tinta); }
.swatch input:focus-visible + .dot { outline: 3px solid var(--cobalto); outline-offset: 6px; }

.opcion { position: relative; cursor: pointer; }
.opcion input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.opcion span {
  display: inline-block;
  padding: .45em 1.1em;
  border: 2px solid var(--tinta);
  border-radius: var(--radio-pildora);
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1rem;
}
.opcion input:checked + span { background: var(--tinta); color: var(--blanco); }
.opcion input:focus-visible + span { outline: 3px solid var(--cobalto); outline-offset: 3px; }

.custom-preview { display: grid; justify-items: center; gap: 1.5rem; }

.print-napkin {
  --tone: #FFFFFF;
  --ink: #101A5C;
  position: relative;
  display: grid;
  width: min(23rem, 82vw);
  aspect-ratio: 1;
  container-type: inline-size;
  overflow: hidden;
  border-radius: .35rem;
  background-color: var(--tone);
  background-image: var(--puntos);
  background-size: 2.3rem 2.3rem;
  box-shadow: 0 2px 0 rgba(16, 26, 92, .18), 0 34px 40px -26px rgba(16, 26, 92, .65);
  transform: rotate(-3deg);
  transition: background-color .25s;
}
.print-text {
  padding: 1.25rem;
  color: var(--ink);
  font-family: var(--f-display);
  font-weight: 800;
  font-stretch: 75%;
  font-variation-settings: "wdth" 75;
  font-size: 2.4rem;
  font-size: clamp(1.5rem, 13cqw, 3.4rem);
  line-height: 1;
  letter-spacing: -.01em;
  text-align: center;
  overflow-wrap: anywhere;
}
.print-napkin[data-pos="centro"] .print-text { place-self: center; }
.print-napkin[data-pos="esquina"] .print-text {
  place-self: end end;
  font-size: 1.5rem;
  font-size: clamp(1.1rem, 7.5cqw, 1.9rem);
  text-align: right;
  padding: 1.25rem 1.4rem;
}
.print-napkin[data-pos="diagonal"] .print-text {
  place-self: center;
  transform: rotate(-45deg);
  width: 90%;
}
.preview-note { font-family: var(--f-display); font-weight: 500; }

/* ---------- 10. Proceso ---------- */
.pasos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: paso;
}
.paso {
  padding: 0 1.75rem;
  border-left: 1px solid rgba(16, 26, 92, .25);
  box-shadow: inset 14px 0 16px -14px rgba(16, 26, 92, .18);
}
.paso:first-child {
  padding-left: 0;
  border-left: 0;
  box-shadow: none;
}
.paso::before {
  counter-increment: paso;
  content: counter(paso);
  display: block;
  margin-bottom: .75rem;
  color: var(--cobalto);
  font-family: var(--f-display);
  font-weight: 800;
  font-stretch: 75%;
  font-size: 5rem;
  line-height: .9;
}
.paso h3 { margin-bottom: .6rem; }
.paso p { font-size: 1.05rem; line-height: 1.5; }

/* ---------- 11. Nosotros ---------- */
.nosotros-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}
.valores { margin: 0; padding: 0; list-style: none; }
.valores li {
  padding-block: 1.5rem;
  border-top: 1px solid rgba(16, 26, 92, .25);
}
.valores li:first-child { padding-top: 0; border-top: 0; }
.valores h3 { margin-bottom: .4rem; }

/* ---------- 12. Preguntas ---------- */
.faq-grid {
  display: grid;
  grid-template-columns: .7fr 1.3fr;
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}
.faq details { border-top: 1px solid rgba(16, 26, 92, .25); }
.faq details:last-child { border-bottom: 1px solid rgba(16, 26, 92, .25); }
.faq summary {
  position: relative;
  padding: 1.25rem 3rem 1.25rem 0;
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.35rem;
  line-height: 1.2;
  list-style: none;
  cursor: pointer;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: .25rem; top: 50%;
  width: 1rem; height: 1rem;
  transform: translateY(-50%);
  background:
    linear-gradient(currentColor, currentColor) center / 100% 2px no-repeat,
    linear-gradient(currentColor, currentColor) center / 2px 100% no-repeat;
}
.faq details[open] summary::after {
  background: linear-gradient(currentColor, currentColor) center / 100% 2px no-repeat;
}
.faq .resp { max-width: 60ch; padding: 0 3rem 1.5rem 0; }

/* ---------- 13. Contacto ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.datos { display: grid; gap: 1.25rem; margin: 2.25rem 0 0; }
.datos dt { font-family: var(--f-display); font-weight: 600; font-size: .95rem; opacity: .85; }
.datos dd { margin: 0; font-size: 1.25rem; line-height: 1.4; }
.datos a { color: inherit; text-underline-offset: .25em; }
.datos a:hover { color: var(--limon); }

.hoja-wrap { filter: drop-shadow(0 26px 22px rgba(6, 10, 60, .4)); }

/* Hoja con la esquina doblada */
.hoja {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.75rem);
  background: var(--blanco);
  color: var(--tinta);
  clip-path: polygon(0 0, calc(100% - 3.5rem) 0, 100% 3.5rem, 100% 100%, 0 100%);
}
.hoja::after {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: 3.5rem; height: 3.5rem;
  background: linear-gradient(to top right, #C7D0FF 50%, transparent 50%);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.25rem;
}
.field.full { grid-column: 1 / -1; }
.field .error {
  min-height: 1.25rem;
  color: var(--error);
  font-size: .95rem;
  line-height: 1.3;
}
.field .error:empty { min-height: 0; }
.field [aria-invalid="true"] { border-color: var(--error); }

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

.form-actions { gap: .75rem; justify-items: start; }
.form-note { font-size: .98rem; opacity: .8; }
.error-general { font-family: var(--f-display); font-weight: 600; }

.exito { display: grid; gap: 1rem; justify-items: start; padding-block: 1rem; }
.exito p { font-size: 1.25rem; }
.exito:focus { outline: none; }

/* ---------- 14. Pie ---------- */
.site-footer {
  background: var(--tinta);
  color: var(--blanco);
  padding-block: 2.5rem;
}
.footer-in {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
}
.footer-in p { font-size: 1rem; opacity: .85; }
.footer-in ul {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-in ul a {
  color: inherit;
  font-family: var(--f-display);
  font-weight: 500;
  text-underline-offset: .25em;
}
.footer-in ul a:hover { color: var(--limon); }

/* ---------- 15. Responsive ---------- */
@media (max-width: 900px) {
  .hero-in,
  .custom-grid,
  .nosotros-grid,
  .faq-grid,
  .contact-grid { grid-template-columns: 1fr; }

  .hero-napkin { margin-top: .5rem; }
  .catalogo { grid-template-columns: 1fr; }

  .pasos { grid-template-columns: repeat(2, 1fr); row-gap: 2.5rem; }
  .paso:nth-child(odd) {
    padding-left: 0;
    border-left: 0;
    box-shadow: none;
  }
}

@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    display: none;
    padding: 1rem var(--gutter) 1.5rem;
    background: var(--cobalto-hondo);
  }
  .nav.is-open { display: block; }
  .nav ul { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .nav a:not(.btn) { font-size: 1.15rem; }
  .no-js .nav-toggle { display: none; }
  .no-js .nav { position: static; display: block; }
}

@media (max-width: 560px) {
  .prod { grid-template-columns: 1fr; gap: 1rem; }
  .form-grid { grid-template-columns: 1fr; }
  .pasos { grid-template-columns: 1fr; }
  .paso,
  .paso:first-child {
    padding: 0;
    border-left: 0;
    box-shadow: none;
  }
  .paso { padding-top: 1.5rem; border-top: 1px solid rgba(16, 26, 92, .25); }
  .paso:first-child { padding-top: 0; border-top: 0; }
  .faq summary { font-size: 1.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}