:root {
  --ia-cyan: #00aeef;
  --ia-blue: #0066c3;
  --ia-royal: #0054a6;
  --ia-deep: #0a2748;
  --ia-navy: #061828;
  --ia-ice: #e8f6fc;
  --ia-mist: #f3f8fb;
  --ia-text: #142433;
  --ia-muted: #5a6b7c;
  --ia-white: #ffffff;
  --ia-line: rgba(10, 39, 72, 0.1);
  --ia-font-display: "Outfit", sans-serif;
  --ia-font-body: "Source Sans 3", sans-serif;
  --ia-radius: 14px;
  --ia-shadow: 0 18px 50px rgba(6, 24, 40, 0.14);
  --ia-shell: min(1160px, calc(100% - 2.5rem));
}

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

html { scroll-behavior: smooth; }

body.induair-body {
  margin: 0;
  color: var(--ia-text);
  font-family: var(--ia-font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  background: var(--ia-mist);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 {
  font-family: var(--ia-font-display);
  line-height: 1.15;
  margin: 0 0 0.6em;
  letter-spacing: -0.02em;
}

.ia-shell {
  width: var(--ia-shell);
  margin-inline: auto;
}

.ia-main { min-height: 50vh; }

/* Header */
.ia-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s ease, border-color .25s ease;
}
.ia-header.is-scrolled {
  box-shadow: 0 8px 28px rgba(6, 24, 40, 0.08);
  border-bottom-color: var(--ia-line);
}
.ia-header__bar {
  background: #0f2438;
  color: rgba(255,255,255,0.88);
  font-size: 0.85rem;
}
.ia-header__bar-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0;
}
.ia-header__tag {
  opacity: 0.8;
  font-weight: 500;
}
.ia-header__main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.65rem 0;
}
.ia-logo img {
  width: clamp(132px, 16vw, 188px);
  height: auto;
  background: transparent;
}
.ia-nav {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  font-family: var(--ia-font-display);
  font-weight: 600;
  font-size: 0.95rem;
}
.ia-nav a:not(.ia-btn):hover { color: var(--ia-blue); }
.ia-nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}
.ia-nav-toggle span {
  display: block;
  height: 2px;
  width: 22px;
  background: var(--ia-deep);
  margin-inline: auto;
  transition: transform .2s ease, opacity .2s ease;
}
.ia-nav-toggle.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.ia-nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.ia-nav-toggle.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Buttons */
.ia-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--ia-cyan), var(--ia-royal));
  color: #fff !important;
  font-family: var(--ia-font-display);
  font-weight: 700;
  font-size: 0.95rem;
  border: 0;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(0, 84, 166, 0.28);
  transition: transform .2s ease, box-shadow .2s ease;
}
.ia-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(0, 84, 166, 0.36);
}
.ia-btn--sm { padding: 0.55rem 1rem; font-size: 0.88rem; }
.ia-btn--ghost {
  background: transparent;
  color: var(--ia-white) !important;
  border: 1.5px solid rgba(255,255,255,0.55);
  box-shadow: none;
}
.ia-btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  box-shadow: none;
}
.ia-btn--outline {
  background: #fff;
  color: var(--ia-royal) !important;
  border: 1.5px solid rgba(0, 84, 166, 0.25);
  box-shadow: none;
}

/* Hero */
.ia-hero {
  position: relative;
  min-height: min(92vh, 780px);
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #fff;
  background: var(--ia-navy);
}
.ia-hero__media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(8, 16, 28, 0.82) 0%, rgba(12, 28, 48, 0.72) 45%, rgba(18, 36, 58, 0.55) 100%),
    var(--ia-hero-img) center / cover no-repeat;
  transform: scale(1.02);
  animation: iaKen 22s ease-in-out infinite alternate;
}
.ia-hero__inner {
  position: relative;
  z-index: 1;
  padding: 6.5rem 0 4.5rem;
  max-width: 720px;
}
.ia-hero__logo {
  width: clamp(180px, 28vw, 260px);
  height: auto;
  margin: 0 0 1.25rem;
  padding: 0.85rem 1rem;
  background: rgba(255, 255, 255, 0.96);
  border-radius: 16px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.28);
  animation: iaFadeUp .8s ease both;
}
.ia-hero h1 {
  font-size: clamp(1.55rem, 3.2vw, 2.25rem);
  font-weight: 600;
  max-width: 18ch;
  margin-bottom: 1rem;
  animation: iaFadeUp .8s ease .1s both;
}
.ia-hero__lead {
  font-size: 1.12rem;
  max-width: 42ch;
  opacity: 0.92;
  margin: 0 0 1.75rem;
  animation: iaFadeUp .8s ease .2s both;
}
.ia-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  animation: iaFadeUp .8s ease .3s both;
}

@keyframes iaFadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}
@keyframes iaKen {
  from { transform: scale(1.02) translate3d(0, 0, 0); }
  to { transform: scale(1.08) translate3d(-1.5%, -1%, 0); }
}

/* Reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s ease, transform .7s ease;
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* Sections */
.ia-section { padding: 4.5rem 0; }
.ia-section--white { background: #fff; }
.ia-section--ice { background: var(--ia-ice); }
.ia-kicker {
  display: inline-block;
  font-family: var(--ia-font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ia-blue);
  margin-bottom: 0.65rem;
}
.ia-section h2 {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  max-width: 22ch;
}
.ia-section__lead {
  color: var(--ia-muted);
  max-width: 52ch;
  margin: 0.5rem 0 0;
}

/* Dual divisions */
.ia-dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2.25rem;
}
.ia-dual__panel {
  position: relative;
  overflow: hidden;
  min-height: 320px;
  padding: 2rem;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-radius: var(--ia-radius);
  isolation: isolate;
}
.ia-dual__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(6,24,40,0.2), rgba(6,24,40,0.84)),
    var(--ia-panel-img) center / cover no-repeat;
  transition: transform .5s ease;
}
.ia-dual__panel:hover::before { transform: scale(1.04); }
.ia-dual__panel--ind::before {
  background:
    linear-gradient(180deg, rgba(6,24,40,0.18), rgba(10,39,72,0.86)),
    var(--ia-panel-img, linear-gradient(135deg, #0a2748, #0066c3)) center / cover no-repeat;
}
.ia-dual__panel--aero::before {
  background:
    linear-gradient(180deg, rgba(6,24,40,0.12), rgba(0,84,166,0.82)),
    var(--ia-panel-img, linear-gradient(135deg, #0054a6, #00aeef)) center / cover no-repeat;
}
.ia-dual__panel h3 {
  font-size: 1.55rem;
  margin-bottom: 0.45rem;
}
.ia-dual__panel p {
  margin: 0 0 1.1rem;
  opacity: 0.92;
  max-width: 34ch;
}
.ia-dual__panel a {
  align-self: flex-start;
  font-family: var(--ia-font-display);
  font-weight: 700;
  border-bottom: 2px solid rgba(255,255,255,0.5);
  padding-bottom: 2px;
}
.ia-dual__panel a:hover { border-bottom-color: #fff; }

/* Services strip */
.ia-services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}
.ia-service {
  padding: 1.5rem 1.35rem;
  background: #fff;
  border: 1px solid var(--ia-line);
  border-radius: var(--ia-radius);
  transition: transform .25s ease, box-shadow .25s ease;
}
.ia-service:hover {
  transform: translateY(-4px);
  box-shadow: var(--ia-shadow);
}
.ia-service__ico {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, rgba(0,174,239,0.15), rgba(0,84,166,0.18));
  color: var(--ia-royal);
}
.ia-service h3 {
  font-size: 1.15rem;
  margin-bottom: 0.4rem;
}
.ia-service p {
  margin: 0;
  color: var(--ia-muted);
  font-size: 0.98rem;
}

/* Course lists */
.ia-courses {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.75rem;
}
.ia-course {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 1rem 1.1rem;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--ia-line);
}
.ia-course__mark {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: 0.45rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ia-cyan), var(--ia-royal));
}
.ia-course strong {
  display: block;
  font-family: var(--ia-font-display);
  font-size: 1rem;
  margin-bottom: 0.15rem;
}
.ia-course span {
  color: var(--ia-muted);
  font-size: 0.92rem;
}

/* CTA band */
.ia-cta {
  position: relative;
  isolation: isolate;
  padding: 3.5rem 0;
  color: #fff;
  overflow: hidden;
  background: var(--ia-deep);
}
.ia-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(120deg, rgba(12, 20, 32, 0.9), rgba(20, 36, 56, 0.82)),
    var(--ia-cta-img, none) center / cover no-repeat;
}
.ia-cta__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.ia-cta h2 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  max-width: 18ch;
  margin: 0 0 0.4rem;
}
.ia-cta p { margin: 0; opacity: 0.9; max-width: 42ch; }

/* Page hero (inner) */
.ia-page-hero {
  position: relative;
  isolation: isolate;
  padding: 4rem 0 3rem;
  color: #fff;
  overflow: hidden;
  background: var(--ia-deep);
}
.ia-page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(115deg, rgba(6,24,40,0.88), rgba(0,84,166,0.72)),
    var(--ia-page-img, none) center / cover no-repeat;
}
.ia-page-hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  max-width: 18ch;
}
.ia-page-hero p {
  margin: 0.75rem 0 0;
  max-width: 48ch;
  opacity: 0.92;
}

/* Content blocks */
.ia-prose { max-width: 70ch; }
.ia-prose p { color: var(--ia-muted); }
.ia-mv {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}
.ia-mv__card {
  padding: 1.6rem;
  border-radius: var(--ia-radius);
  background: #fff;
  border: 1px solid var(--ia-line);
}
.ia-mv__card h3 {
  color: var(--ia-royal);
  font-size: 1.2rem;
}

.ia-group { margin-top: 2.5rem; }
.ia-group h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid rgba(0, 174, 239, 0.35);
}

/* Form */
.ia-form {
  display: grid;
  gap: 1rem;
  max-width: 640px;
  margin-top: 1.5rem;
}
.ia-form label {
  display: grid;
  gap: 0.35rem;
  font-family: var(--ia-font-display);
  font-weight: 600;
  font-size: 0.92rem;
}
.ia-form input,
.ia-form select,
.ia-form textarea {
  font: inherit;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--ia-line);
  border-radius: 10px;
  background: #fff;
  color: var(--ia-text);
}
.ia-form textarea { min-height: 120px; resize: vertical; }
.ia-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.ia-alert {
  padding: 0.9rem 1rem;
  border-radius: 10px;
  margin-bottom: 1rem;
  font-weight: 600;
}
.ia-alert--ok { background: #e7f8ef; color: #0f6b3c; }
.ia-alert--err { background: #fdeceb; color: #9b1c1c; }

/* Footer */
.ia-footer {
  background: #101820;
  color: rgba(255,255,255,0.86);
  padding-top: 3rem;
}
.ia-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2.5rem;
}
.ia-footer__brand img {
  width: 150px;
  margin-bottom: 0.85rem;
  padding: 0.65rem 0.75rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
}
.ia-footer h3 {
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
  color: #fff;
}
.ia-footer li + li { margin-top: 0.45rem; }
.ia-footer a:hover { color: #9ec9e8; }
.ia-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1rem 0;
  font-size: 0.9rem;
  opacity: 0.9;
}
.ia-footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.ia-footer__bottom p { margin: 0; opacity: 0.8; }
.ia-footer__credit a {
  color: #9ec9e8;
  font-weight: 700;
  letter-spacing: 0.02em;
  border-bottom: 1px solid rgba(158, 201, 232, 0.45);
  transition: color .2s ease, border-color .2s ease;
}
.ia-footer__credit a:hover {
  color: #fff;
  border-bottom-color: #fff;
}

/* WhatsApp */
.ia-wa {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 60;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #25d366;
  color: #fff;
  box-shadow: 0 12px 28px rgba(37, 211, 102, 0.4);
  transition: transform .2s ease;
}
.ia-wa:hover { transform: scale(1.06); }

/* Responsive */
@media (max-width: 900px) {
  .ia-dual,
  .ia-services,
  .ia-courses,
  .ia-mv,
  .ia-footer__grid {
    grid-template-columns: 1fr;
  }
  .ia-nav-toggle { display: flex; }
  .ia-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--ia-line);
    padding: 0.5rem 1.25rem 1rem;
    box-shadow: 0 16px 30px rgba(6,24,40,0.1);
  }
  .ia-nav.is-open { display: flex; }
  .ia-nav a {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--ia-line);
  }
  .ia-nav .ia-btn { margin-top: 0.5rem; justify-content: center; }
  .ia-header__bar-inner { font-size: 0.78rem; }
  .ia-form__row { grid-template-columns: 1fr; }
  .ia-hero__inner { padding-top: 5.5rem; }
}