/* =========================================================================
   IngenioTank — Landing institucional
   CSS3 moderno, sin frameworks ni preprocesadores. Mobile-first.
   ========================================================================= */

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

html,
body {
  margin: 0;
  padding: 0;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4,
p,
dl,
dd {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ---------- Tokens ---------- */
:root {
  /* Paleta institucional (identidad-visual.md) */
  --color-navy: #0b2440;
  --color-navy-deep: #07182a;
  --color-blue: #1e6fd9;
  --color-blue-light: #9cc2f5;
  --color-amber: #e8a33d;
  --color-white: #ffffff;
  --color-surface: #f7f9fc;
  --color-surface-alt: #eef2f6;
  --color-text: #0b2440;
  --color-text-secondary: #4a5768;
  --color-text-light: #e7ecf3;
  --color-text-light-secondary: #b9c4d4;

  /* Verde WhatsApp: #1F8F4D es el tono de referencia (icono, acentos).
     Para rellenos sólidos con texto blanco se usa una variante ligeramente
     más profunda que garantiza contraste AA (4.5:1) en cualquier tamaño. */
  --color-whatsapp: #1f8f4d;
  --color-whatsapp-fill: #1b7f44;
  --color-whatsapp-fill-hover: #17703b;

  --focus-color: var(--color-blue);

  --font-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container-w: 1240px;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;
  --space-8: 5.5rem;

  --radius-sm: 4px;
  --radius-md: 8px;

  --header-h: 5rem;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

main section[id],
section[id] {
  scroll-margin-top: var(--header-h);
}

h1,
h2,
h3 {
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem);
}

h3 {
  font-size: clamp(1.15rem, 1.05rem + 0.4vw, 1.35rem);
}

p {
  color: var(--color-text-secondary);
}

/* ---------- Utilidades ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -3rem;
  background: var(--color-navy);
  color: var(--color-white);
  padding: 0.65rem 1.1rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top 0.2s var(--ease);
}

.skip-link:focus-visible {
  top: var(--space-3);
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

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

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.2;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  min-height: 44px;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease), transform 0.12s var(--ease), color 0.18s var(--ease);
}

.btn .icon {
  width: 1.2rem;
  height: 1.2rem;
}

.btn:active {
  transform: translateY(1px);
}

.btn--whatsapp {
  background: var(--color-whatsapp-fill);
  color: var(--color-white);
  border-color: var(--color-whatsapp-fill);
}

.btn--whatsapp:hover {
  background: var(--color-whatsapp-fill-hover);
  border-color: var(--color-whatsapp-fill-hover);
}

.btn--ghost {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn--ghost:hover {
  background: var(--color-navy);
  color: var(--color-white);
}

.btn--lg {
  font-size: 1.05rem;
  padding: 1rem 1.7rem;
}

.btn--nav {
  padding: 0.6rem 1.05rem;
  font-size: 0.92rem;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid transparent;
  backdrop-filter: saturate(140%) blur(6px);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-surface-alt);
  box-shadow: 0 6px 18px -12px rgba(11, 36, 64, 0.35);
}

.header-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--space-4);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.brand-logo {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-sm);
}

.footer-brand .brand-logo {
  width: 48px;
  height: 48px;
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-navy);
  letter-spacing: -0.01em;
}

.nav-toggle {
  /* Oculto por defecto: sin JavaScript no tiene ningun efecto al pulsarse,
     y el menu permanece visible en el flujo normal de la pagina. */
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-surface-alt);
  border-radius: var(--radius-sm);
  color: var(--color-navy);
}

.nav-toggle__icon--close {
  display: none;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon--open {
  display: none;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon--close {
  display: block;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.primary-nav__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.primary-nav__list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 600;
  color: var(--color-text);
  border-bottom: 2px solid transparent;
}

.primary-nav__list a:hover {
  color: var(--color-blue);
}

.primary-nav__list a.is-active {
  color: var(--color-blue);
  font-weight: 700;
  border-bottom-color: var(--color-amber);
}

/* Mobile nav: sin JS permanece visible en flujo (accesible por defecto) */
.primary-nav {
  flex-direction: column;
  align-items: stretch;
  position: static;
  border-top: 1px solid var(--color-surface-alt);
  padding: var(--space-3) 0 var(--space-4);
}

.primary-nav .btn--nav {
  align-self: flex-start;
  margin-top: var(--space-2);
}

/* Con JS: nav-toggle controla un panel colapsable en móvil/tablet */
.js .nav-toggle {
  display: inline-flex;
}

.js .primary-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-surface-alt);
  box-shadow: 0 12px 24px -18px rgba(11, 36, 64, 0.4);
  padding: var(--space-3) var(--space-4) var(--space-5);
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
}

.js .nav-toggle[aria-expanded="false"] + .primary-nav {
  display: none;
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .primary-nav {
    flex-direction: row;
    border-top: none;
    padding: 0;
    position: static;
    max-height: none;
    overflow: visible;
    box-shadow: none;
  }

  .primary-nav__list {
    flex-direction: row;
    gap: var(--space-5);
  }

  .js .primary-nav {
    position: static;
    display: flex !important;
  }

  .js .nav-toggle[aria-expanded="false"] + .primary-nav {
    display: flex !important;
  }
}

/* ---------- Estructura de secciones ---------- */
.section {
  padding: var(--space-7) 0;
}

.section--light {
  background: var(--color-white);
}

.section--surface {
  background: var(--color-surface);
}

.section--dark {
  background: var(--color-navy);
  color: var(--color-text-light);
  --focus-color: var(--color-blue-light);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-white);
}

.section--dark p {
  color: var(--color-text-light-secondary);
}

.section-head {
  max-width: 46rem;
  margin-bottom: var(--space-6);
}

.section-head__lede {
  margin-top: var(--space-3);
  font-size: 1.05rem;
  max-width: 38rem;
}

.section-head--split {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

@media (min-width: 900px) {
  .section-head--split {
    grid-template-columns: 0.85fr 1fr;
    align-items: end;
    max-width: none;
  }

  .section-head--split .section-head__lede {
    margin-top: 0;
  }
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-blue);
  margin: 0 0 var(--space-3);
}

.section--dark .eyebrow {
  color: var(--color-blue-light);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--color-white);
  padding: var(--space-6) 0 var(--space-8);
  display: grid;
  gap: var(--space-6);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-white) 55%);
  z-index: -1;
}

.hero__content {
  max-width: 640px;
  padding: 0 var(--space-4);
  margin: 0 auto;
  width: 100%;
}

.hero__logo {
  width: 72px;
  height: 72px;
  margin-bottom: var(--space-4);
}

.hero h1 {
  font-size: clamp(2.1rem, 1.7rem + 2.6vw, 3.4rem);
  color: var(--color-navy);
  margin-bottom: var(--space-4);
}

.hero__subtitle {
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.2rem);
  color: var(--color-text);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.hero__description {
  font-size: 1.05rem;
  max-width: 34rem;
  margin-bottom: var(--space-5);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero__visual {
  padding: 0 var(--space-4);
  display: flex;
  justify-content: center;
}

.hero-graphic {
  width: 100%;
  max-width: 420px;
  height: auto;
}

.hg-layer {
  fill: var(--color-surface-alt);
  stroke: var(--color-navy);
  stroke-opacity: 0.14;
}

.hg-layer--b {
  fill: #e4ecf7;
}

.hg-layer--c {
  fill: var(--color-white);
  stroke-opacity: 0.22;
}

.hg-route {
  fill: none;
  stroke: var(--color-blue);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.85;
}

.hg-route--thin {
  stroke-width: 1.5;
  opacity: 0.5;
}

.hg-node {
  fill: var(--color-white);
  stroke: var(--color-blue);
  stroke-width: 2.5;
}

.hg-node--outline {
  fill: var(--color-white);
}

.hg-node--decision {
  fill: var(--color-amber);
  stroke: var(--color-amber);
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    padding: var(--space-8) 0;
  }

  .hero__content {
    padding: 0 0 0 var(--space-6);
    margin: 0;
  }

  .hero__visual {
    padding: 0 var(--space-5) 0 0;
    justify-content: flex-end;
  }

  .hero-graphic {
    max-width: 480px;
  }

  .hero__logo {
    width: 96px;
    height: 96px;
  }
}

@media (min-width: 1280px) {
  .hero__content {
    padding-left: var(--space-7);
  }
}

/* ---------- Lo que ayudamos a resolver ---------- */
.issue-grid {
  display: grid;
  gap: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-surface-alt);
  padding-top: var(--space-5);
}

.issue {
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-surface-alt);
}

.issue:nth-child(1) {
  border-top: none;
  padding-top: 0;
}

.issue__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.1rem;
  height: 2.1rem;
  padding: 0 0.4rem;
  background: var(--color-amber);
  color: var(--color-navy);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}

.issue h3 {
  margin-bottom: var(--space-2);
  color: var(--color-navy);
}

@media (min-width: 700px) {
  .issue-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .issue:nth-child(2) {
    border-top: none;
    padding-top: 0;
  }
}

@media (min-width: 1100px) {
  .issue-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .issue:nth-child(2),
  .issue:nth-child(3),
  .issue:nth-child(4) {
    border-top: none;
    padding-top: 0;
  }

  .issue:not(:first-child) {
    border-top: none;
    border-left: 1px solid var(--color-surface-alt);
    padding-left: var(--space-4);
    padding-top: 0;
  }
}

.pull-statement {
  margin-top: var(--space-6);
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-amber);
  font-size: clamp(1.15rem, 1.05rem + 0.5vw, 1.4rem);
  color: var(--color-navy);
  font-weight: 600;
  max-width: 46rem;
  line-height: 1.4;
}

/* ---------- Cómo generamos valor (recorrido interactivo) ---------- */
.value-tour__nav {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.value-tour__trigger {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  min-height: 44px;
  background: transparent;
  border: 1px solid rgba(231, 236, 243, 0.25);
  color: var(--color-text-light-secondary);
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-sm);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.value-tour__num {
  opacity: 0.7;
  font-weight: 400;
  margin-right: 0.15rem;
}

.value-tour__trigger:hover {
  border-color: var(--color-blue-light);
  color: var(--color-white);
}

.value-tour__trigger.is-active {
  background: rgba(156, 194, 245, 0.12);
  border-color: var(--color-amber);
  color: var(--color-white);
  font-weight: 700;
}

.value-tour__panels {
  border-top: 1px solid rgba(231, 236, 243, 0.18);
  padding-top: var(--space-5);
}

.value-tour__panel {
  display: none;
}

.value-tour__panel.is-active,
.value-tour__panel {
  display: block;
}

.js .value-tour__panel {
  display: none;
}

.js .value-tour__panel.is-active {
  display: block;
}

.value-tour__panel h3 {
  margin-bottom: var(--space-2);
}

.value-tour__panel p {
  font-size: 1.1rem;
  max-width: 40rem;
}

@media (min-width: 700px) {
  .value-tour__nav {
    grid-template-columns: repeat(5, 1fr);
  }

  .value-tour__trigger {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

@media (min-width: 1024px) {
  .value-tour {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: var(--space-6);
  }

  .value-tour__nav {
    grid-template-columns: 1fr;
    margin-bottom: 0;
  }

  .value-tour__trigger {
    flex-direction: row;
    align-items: center;
  }

  .value-tour__panels {
    border-top: none;
    padding-top: 0;
    border-left: 1px solid rgba(231, 236, 243, 0.18);
    padding-left: var(--space-6);
  }
}

/* ---------- Tres formas de comenzar ---------- */
.start-grid {
  display: grid;
  gap: var(--space-4);
}

.start-card {
  border: 1px solid var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  border-top: 3px solid var(--color-navy);
}

.start-card__icon {
  width: 2rem;
  height: 2rem;
  color: var(--color-blue);
  margin-bottom: var(--space-3);
}

.start-card h3 {
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.start-card__label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--color-text-secondary);
  margin: var(--space-3) 0 0.35rem;
}

.start-card__details {
  margin-top: var(--space-4);
  border-top: 1px solid var(--color-surface-alt);
  padding-top: var(--space-3);
}

.start-card__details summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  color: var(--color-navy);
  min-height: 44px;
}

.start-card__details summary::-webkit-details-marker {
  display: none;
}

.start-card__chevron {
  color: var(--color-blue);
  transition: transform 0.2s var(--ease);
}

.start-card__details[open] .start-card__chevron {
  transform: rotate(180deg);
}

.start-card__details ul {
  list-style: none;
  margin-top: var(--space-3);
  display: grid;
  gap: 0.5rem;
}

.start-card__details li {
  padding-left: 1.1rem;
  position: relative;
  color: var(--color-text-secondary);
}

.start-card__details li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--color-amber);
  border-radius: 1px;
}

@media (min-width: 900px) {
  .start-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- CTA banda intermedia ---------- */
.cta-band {
  background: var(--color-navy-deep);
  color: var(--color-white);
  border-top: 1px solid rgba(232, 163, 61, 0.35);
  border-bottom: 1px solid rgba(232, 163, 61, 0.35);
  padding: var(--space-6) 0;
  --focus-color: var(--color-blue-light);
}

.cta-band__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
}

.cta-band h2 {
  font-size: clamp(1.3rem, 1.1rem + 1vw, 1.75rem);
  color: var(--color-white);
  max-width: 34rem;
}

@media (min-width: 800px) {
  .cta-band__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ---------- Capacidades ---------- */
.capability-grid {
  display: grid;
  gap: var(--space-4);
}

.capability {
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-surface-alt);
}

.capability .icon {
  width: 1.9rem;
  height: 1.9rem;
  color: var(--color-blue);
  margin-bottom: var(--space-3);
}

.capability h3 {
  color: var(--color-navy);
  margin-bottom: var(--space-2);
  font-size: 1.15rem;
}

.capability--feature {
  border-top: 3px solid var(--color-amber);
}

.capability--feature .icon {
  color: var(--color-navy);
}

@media (min-width: 700px) {
  .capability-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5) var(--space-6);
  }

  .capability {
    padding: var(--space-4) var(--space-4) var(--space-4) 0;
  }
}

@media (min-width: 1100px) {
  .capability-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .capability {
    grid-column: span 2;
  }
}

/* ---------- Perspectiva multicloud ---------- */
.ecosystem-grid {
  list-style: none;
  display: grid;
  gap: var(--space-3);
}

.ecosystem-card {
  background: var(--color-white);
  border: 1px solid var(--color-surface-alt);
  border-bottom: 3px solid transparent;
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.ecosystem-card:hover,
.ecosystem-card:focus-within {
  border-bottom-color: var(--color-amber);
  transform: translateY(-2px);
}

.ecosystem-card__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.ecosystem-card__mark .icon {
  width: 1.5rem;
  height: 1.5rem;
}

.ecosystem-card h3 {
  font-size: 1.05rem;
  color: var(--color-navy);
  margin-bottom: 0.4rem;
}

.ecosystem-card p {
  font-size: 0.92rem;
}

@media (min-width: 700px) {
  .ecosystem-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1100px) {
  .ecosystem-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* ---------- Cómo trabajamos (línea de proceso) ---------- */
.process-line {
  list-style: none;
  display: grid;
  gap: var(--space-5);
  counter-reset: none;
}

.process-line__step {
  position: relative;
  padding-left: var(--space-5);
  border-left: 2px solid rgba(156, 194, 245, 0.35);
  padding-bottom: var(--space-4);
}

.process-line__step:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.process-line__index {
  position: absolute;
  left: -0.95rem;
  top: 0;
  width: 1.9rem;
  height: 1.9rem;
  border-radius: 50%;
  background: var(--color-blue-light);
  color: var(--color-navy);
  font-weight: 700;
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.process-line__step h3 {
  margin-bottom: var(--space-2);
}

.process-line__step p {
  max-width: 34rem;
}

@media (min-width: 1000px) {
  .process-line {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
  }

  .process-line__step {
    padding-left: 0;
    padding-top: var(--space-5);
    border-left: none;
    border-top: 2px solid rgba(156, 194, 245, 0.35);
    padding-bottom: 0;
  }

  .process-line__index {
    left: 0;
    top: -0.95rem;
  }
}

/* ---------- Por qué IngenioTank ---------- */
.reason-list {
  display: grid;
  gap: var(--space-5);
}

.reason {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-surface-alt);
}

.reason:first-child {
  border-top: none;
  padding-top: 0;
}

.reason__index {
  font-weight: 700;
  color: var(--color-blue);
  font-size: 1.1rem;
}

.reason h3 {
  color: var(--color-navy);
  margin-bottom: 0.35rem;
}

@media (min-width: 900px) {
  .reason-list {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5) var(--space-6);
  }

  .reason:nth-child(2) {
    border-top: none;
    padding-top: 0;
  }
}

/* ---------- Modelo de entrega ---------- */
.delivery-list {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.delivery-item {
  border-top: 1px solid rgba(231, 236, 243, 0.18);
  padding-top: var(--space-3);
}

.delivery-item dt {
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.3rem;
}

@media (min-width: 900px) {
  .delivery-list {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
  }
}

.expectation-block {
  background: var(--color-navy-deep);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.expectation-block h3 {
  margin-bottom: var(--space-4);
}

.check-list {
  list-style: none;
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
}

.check-list .icon {
  color: var(--color-amber);
  width: 1.2rem;
  height: 1.2rem;
  margin-top: 0.15rem;
}

.check-list span {
  color: var(--color-text-light);
}

.expectation-block__note {
  font-size: 0.95rem;
  max-width: 44rem;
  margin-bottom: var(--space-3);
}

.expectation-block__note--emphasis {
  color: var(--color-white);
  font-weight: 600;
}

@media (min-width: 900px) {
  .delivery-list {
    margin-bottom: var(--space-7);
  }
}

/* ---------- Comunidades ---------- */
.comunidades__inner {
  display: grid;
  gap: var(--space-6);
  align-items: center;
}

.comunidades__text p {
  font-size: 1.05rem;
  max-width: 36rem;
}

.comunidades__visual {
  display: flex;
  justify-content: center;
}

.comunidades__visual svg {
  width: 100%;
  max-width: 280px;
  height: auto;
  color: var(--color-blue);
}

.comunidades__visual .hg-route--thin {
  stroke: var(--color-blue);
}

@media (min-width: 900px) {
  .comunidades__inner {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

/* ---------- Portafolios especializados ---------- */
.portfolio-grid {
  list-style: none;
  display: grid;
  gap: var(--space-4);
}

.portfolio-card {
  border: 1px solid var(--color-surface-alt);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
}

.portfolio-card .icon {
  width: 1.7rem;
  height: 1.7rem;
  color: var(--color-blue);
  margin-bottom: var(--space-3);
}

.portfolio-card h3 {
  font-size: 1.05rem;
  color: var(--color-navy);
  margin-bottom: 0.4rem;
}

.portfolio-card p {
  font-size: 0.92rem;
}

.portfolio-card__note {
  margin-top: var(--space-3);
  font-size: 0.8rem;
  font-style: italic;
  color: var(--color-text-secondary);
  opacity: 0.85;
}

@media (min-width: 700px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .portfolio-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- Contacto ---------- */
.contact__inner {
  max-width: 42rem;
}

.contact__text h2 {
  margin-bottom: var(--space-3);
}

.contact__question {
  font-size: 1.15rem;
  color: var(--color-white);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.contact__topics {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.contact__topics li {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid rgba(231, 236, 243, 0.3);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.9rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.contact__topics .icon {
  width: 1.05rem;
  height: 1.05rem;
  color: var(--color-blue-light);
}

.contact__corp {
  margin-top: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.95rem;
  color: var(--color-text-light-secondary);
}

.contact__corp a {
  color: var(--color-blue-light);
  font-weight: 600;
}

.contact__corp a:hover {
  text-decoration: underline;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-navy-deep);
  color: var(--color-text-light-secondary);
  padding: var(--space-6) 0 var(--space-5);
  --focus-color: var(--color-blue-light);
}

.footer-inner {
  display: grid;
  gap: var(--space-5);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.footer-brand .brand-name {
  color: var(--color-white);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-nav a:hover {
  color: var(--color-white);
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

.footer-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  color: var(--color-white);
  min-height: 44px;
}

.footer-whatsapp .icon {
  color: var(--color-whatsapp);
}

.footer-contact a[href^="https://ingeniotank"] {
  color: var(--color-blue-light);
  font-weight: 600;
}

.footer-legal {
  font-size: 0.85rem;
  border-top: 1px solid rgba(231, 236, 243, 0.15);
  padding-top: var(--space-4);
  margin: 0;
}

@media (min-width: 900px) {
  .footer-inner {
    grid-template-columns: auto 1fr auto;
    align-items: center;
  }

  .footer-legal {
    grid-column: 1 / -1;
  }
}

/* ---------- Animación de entrada discreta ---------- */
.js [data-animate] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.js [data-animate].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .js [data-animate] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  * {
    scroll-behavior: auto !important;
  }
}

/* ---------- Responsive: ajustes finos por breakpoint ---------- */
@media (min-width: 1280px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (max-width: 359px) {
  .container {
    padding: 0 var(--space-3);
  }
}