:root {
  --navy: #0b1f3a;
  --navy-2: #12345d;
  --blue: #1d5f93;
  --gray-50: #f7f9fc;
  --gray-100: #eef3f8;
  --gray-200: #dbe4ee;
  --gray-700: #42526a;
  --white: #ffffff;
  --ink: #102033;
  --shadow: 0 20px 45px rgba(11, 31, 58, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}

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

a {
  color: inherit;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.narrow {
  max-width: 820px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 10;
  padding: 10px 14px;
  background: var(--white);
  color: var(--navy);
  border-radius: 4px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--gray-200);
  backdrop-filter: blur(10px);
}

.nav {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--navy);
  font-weight: 700;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--navy);
  color: var(--white);
  font-size: 0.86rem;
  letter-spacing: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.nav-menu a {
  display: block;
  padding: 10px 13px;
  border-radius: 6px;
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-menu a:hover,
.nav-menu a[aria-current="page"] {
  color: var(--navy);
  background: var(--gray-100);
}

.nav-menu .nav-cta {
  color: var(--white);
  background: var(--navy);
}

.nav-menu .nav-cta:hover,
.nav-menu .nav-cta[aria-current="page"] {
  color: var(--white);
  background: var(--navy-2);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  background: var(--white);
  padding: 9px;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--navy);
}

.hero {
  position: relative;
  min-height: 690px;
  display: grid;
  align-items: center;
  overflow: hidden;
  background: var(--navy);
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6, 20, 38, 0.95) 0%, rgba(7, 27, 50, 0.82) 38%, rgba(7, 27, 50, 0.26) 100%),
    url("../images/aviation-data-hero.png") center / cover no-repeat;
}

.hero-content {
  position: relative;
  padding: 96px 0 116px;
  color: var(--white);
}

.eyebrow {
  margin: 0 0 12px;
  color: #6fa5ca;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.page-hero h1 {
  max-width: 770px;
  margin: 0;
  font-size: clamp(2.45rem, 5vw, 4.8rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 610px;
  margin: 24px 0 0;
  color: #dbe7f4;
  font-size: 1.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  background: var(--blue);
  color: var(--white);
}

.button.primary:hover {
  background: #184f7c;
}

.button.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.42);
}

.button.secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.section {
  padding: 82px 0;
}

.intro-band,
.muted {
  background: var(--gray-50);
}

.intro-grid,
.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 56px;
  align-items: start;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(1.75rem, 3vw, 2.55rem);
  line-height: 1.15;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  color: var(--navy);
  font-size: 1.1rem;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 34px;
}

.card-grid,
.case-grid,
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.service-card,
.case-card,
.values-grid article,
.contact-panel {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.service-card,
.case-card,
.values-grid article {
  padding: 26px;
}

.service-card p,
.case-card p,
.values-grid p,
.feature-list p,
.intro-grid p,
.contact-note p,
.page-hero p {
  margin: 0;
  color: var(--gray-700);
}

.feature-list {
  display: grid;
  gap: 18px;
}

.cta-band {
  background: var(--navy);
  color: var(--white);
}

.cta-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cta-content h2 {
  color: var(--white);
}

.cta-content p {
  margin: 8px 0 0;
  color: #dbe7f4;
}

.page-hero {
  padding: 92px 0;
  background:
    linear-gradient(135deg, rgba(11, 31, 58, 0.96), rgba(18, 52, 93, 0.94)),
    radial-gradient(circle at 85% 20%, rgba(111, 165, 202, 0.22), transparent 34%);
  color: var(--white);
}

.page-hero .eyebrow {
  color: #b5d6ef;
}

.page-hero p {
  max-width: 680px;
  margin-top: 22px;
  color: #dbe7f4;
  font-size: 1.1rem;
}

.services-list {
  display: grid;
  gap: 16px;
}

.service-detail {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 24px;
  padding: 28px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
}

.service-detail h2 {
  font-size: 1.45rem;
  margin-bottom: 8px;
}

.service-detail p {
  margin: 0;
  color: var(--gray-700);
}

.service-number {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--gray-100);
  color: var(--navy);
  font-weight: 700;
}

.case-label {
  margin-bottom: 14px;
  color: var(--blue) !important;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-card h2,
.values-grid h2 {
  margin-bottom: 12px;
  font-size: 1.32rem;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding: 40px;
  align-items: center;
}

.contact-panel h2 {
  margin-bottom: 12px;
  font-size: 1.35rem;
}

.contact-email {
  color: var(--blue);
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 700;
}

.site-footer {
  padding: 28px 0;
  border-top: 1px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-700);
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.footer-grid p {
  margin: 0;
}

.footer-grid a {
  color: var(--navy);
  font-weight: 700;
}

@media (max-width: 860px) {
  .container {
    width: min(100% - 32px, 1120px);
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 74px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-menu a {
    padding: 12px 14px;
  }

  .hero {
    min-height: 620px;
  }

  .hero-media {
    background:
      linear-gradient(90deg, rgba(6, 20, 38, 0.96) 0%, rgba(7, 27, 50, 0.86) 60%, rgba(7, 27, 50, 0.55) 100%),
      url("../images/aviation-data-hero.png") center / cover no-repeat;
  }

  .hero-content {
    padding: 78px 0 92px;
  }

  .intro-grid,
  .split,
  .contact-panel {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .card-grid,
  .case-grid,
  .values-grid {
    grid-template-columns: 1fr 1fr;
  }

  .cta-content {
    display: block;
  }

  .cta-content .button {
    margin-top: 22px;
  }
}

@media (max-width: 620px) {
  .brand span:last-child {
    max-width: 210px;
  }

  .section {
    padding: 60px 0;
  }

  .page-hero {
    padding: 70px 0;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 2.35rem;
  }

  .hero-copy {
    font-size: 1.05rem;
  }

  .button {
    width: 100%;
  }

  .card-grid,
  .case-grid,
  .values-grid {
    grid-template-columns: 1fr;
  }

  .service-detail {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 24px;
  }

  .footer-grid {
    display: grid;
  }
}