:root {
  --ink: #18201d;
  --muted: #5d6861;
  --line: #d7ddd8;
  --paper: #fbfaf6;
  --soft: #eef4f1;
  --accent: #176a73;
  --accent-dark: #0f4b51;
  --gold: #b4813c;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(23, 106, 115, .08), transparent 360px),
    var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.55;
}

a {
  color: var(--accent-dark);
  font-weight: 700;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
}

.skip-link {
  background: var(--ink);
  color: var(--white);
  left: 16px;
  padding: 10px 14px;
  position: fixed;
  top: 12px;
  transform: translateY(-140%);
  z-index: 20;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  align-items: center;
  background: rgba(251, 250, 246, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  padding: 18px clamp(18px, 5vw, 64px);
  position: sticky;
  top: 0;
  z-index: 5;
}

.brand {
  color: var(--ink);
  font-size: 1.05rem;
  letter-spacing: 0;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

nav a {
  color: var(--muted);
  font-size: .78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(320px, 560px);
  min-height: calc(100vh - 78px);
}

.hero-media {
  align-items: end;
  background:
    linear-gradient(135deg, rgba(15, 75, 81, .28), rgba(180, 129, 60, .16)),
    url("assets/aviation-runway.jpg");
  background-position: center;
  background-size: cover;
  display: flex;
  min-height: 420px;
  padding: 28px;
}

.hero-media span {
  background: rgba(255, 255, 255, .88);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: .9rem;
  padding: 10px 12px;
}

.hero-copy {
  align-self: center;
  padding: clamp(32px, 7vw, 84px);
}

.eyebrow,
.kicker {
  color: var(--gold);
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .08em;
  margin: 0 0 12px;
  text-transform: uppercase;
}

h1,
h2 {
  letter-spacing: 0;
  line-height: 1.05;
  margin: 0 0 16px;
}

h1 {
  font-size: clamp(3rem, 9vw, 6.6rem);
}

h2 {
  font-size: clamp(2rem, 5vw, 3.7rem);
}

.lede {
  color: var(--muted);
  font-size: clamp(1.1rem, 2.3vw, 1.45rem);
  max-width: 620px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  background: var(--white);
  border-block: 1px solid var(--line);
}

.proof-strip article {
  min-height: 170px;
  padding: clamp(22px, 3vw, 36px) clamp(18px, 5vw, 64px);
  border-right: 1px solid var(--line);
}

.proof-strip article:last-child { border-right: 0; }

.proof-strip span {
  color: var(--gold);
  display: block;
  font-weight: 900;
  margin-bottom: 18px;
}

.proof-strip strong {
  display: block;
  font-size: 22px;
}

.proof-strip p {
  color: var(--muted);
  margin-bottom: 0;
}

.button {
  align-items: center;
  border: 1px solid var(--accent);
  color: var(--accent-dark);
  display: inline-flex;
  min-height: 44px;
  padding: 11px 16px;
}

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

.intro-grid {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 0 clamp(18px, 5vw, 64px) 64px;
}

.intro-grid article {
  background: var(--white);
  border: 1px solid var(--line);
  min-height: 290px;
  padding: clamp(22px, 4vw, 38px);
  box-shadow: 0 18px 40px rgba(24, 32, 29, .06);
}

.intro-grid h2 {
  font-size: clamp(1.5rem, 2.4vw, 2.2rem);
}

.intro-grid p {
  color: var(--muted);
}

.feature-band {
  align-items: center;
  background: var(--soft);
  border-block: 1px solid var(--line);
  display: flex;
  gap: 28px;
  justify-content: space-between;
  padding: clamp(36px, 7vw, 78px) clamp(18px, 5vw, 64px);
}

.feature-band.alt {
  background: var(--white);
}

.feature-band.nonprofit-band {
  background:
    linear-gradient(135deg, rgba(23, 106, 115, .12), rgba(180, 129, 60, .12)),
    var(--white);
}

.feature-band div {
  max-width: 780px;
}

.page-main {
  margin: 0 auto;
  max-width: 1080px;
  padding: clamp(36px, 7vw, 86px) clamp(18px, 5vw, 64px);
}

.page-main h1 {
  font-size: clamp(2.6rem, 7vw, 5rem);
  max-width: 900px;
}

.page-main .lead {
  color: var(--muted);
  font-size: 1.2rem;
  max-width: 760px;
}

.content-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr 1fr;
  margin-top: 42px;
}

.panel {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 28px;
}

.panel h2 {
  font-size: 1.75rem;
}

.article-body {
  background: var(--white);
  border: 1px solid var(--line);
  margin-top: 34px;
  padding: clamp(24px, 5vw, 48px);
}

.page-visual {
  background: var(--white);
  border: 1px solid var(--line);
  margin-top: 34px;
  overflow: hidden;
}

.page-visual img {
  aspect-ratio: 16 / 9;
  display: block;
  height: auto;
  object-fit: cover;
  width: 100%;
}

.page-visual figcaption {
  color: var(--muted);
  font-size: .9rem;
  padding: 12px 16px;
}

.portrait-visual {
  max-width: 520px;
}

.portrait-visual img {
  aspect-ratio: 3 / 4;
}

.full-frame-visual img {
  aspect-ratio: 4 / 3;
}

.image-grid {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 34px;
}

.image-grid figure {
  background: var(--white);
  border: 1px solid var(--line);
  margin: 0;
}

.image-grid img {
  aspect-ratio: 16 / 9;
  display: block;
  height: auto;
  object-fit: cover;
  width: 100%;
}

.image-grid figcaption {
  color: var(--muted);
  font-size: .9rem;
  padding: 12px 16px;
}

.article-body p,
.article-body li {
  color: #323b36;
  font-size: 1.05rem;
}

.nonprofit-page .content-grid {
  align-items: stretch;
}

.resource-grid,
.logo-grid {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.resource-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.resource-grid figure {
  background: var(--white);
  border: 1px solid var(--line);
  margin: 0;
}

.resource-grid img {
  aspect-ratio: 16 / 10;
  display: block;
  object-fit: cover;
  width: 100%;
}

.resource-grid figcaption {
  color: var(--muted);
  font-size: .92rem;
  padding: 14px 16px;
}

.logo-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.logo-grid article {
  background: var(--white);
  border: 1px solid var(--line);
  min-height: 260px;
  padding: 22px;
}

.logo-grid img {
  aspect-ratio: 1;
  display: block;
  margin-bottom: 16px;
  max-width: 120px;
  object-fit: contain;
  width: 44%;
}

.logo-grid strong {
  display: block;
  font-size: 1.05rem;
}

.logo-grid p {
  color: var(--muted);
}

.inline-band {
  margin-top: 34px;
  padding-inline: clamp(24px, 5vw, 48px);
}

footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 28px clamp(18px, 5vw, 64px);
}

.small {
  font-size: .9rem;
}

.image-grid,
.proof-strip {
  content-visibility: auto;
  contain-intrinsic-size: 1px 520px;
}

.enhancement-panel {
  background: var(--ink);
  color: var(--white);
  padding: clamp(36px, 7vw, 78px) clamp(18px, 5vw, 64px);
}

.enhancement-panel h2 {
  max-width: 900px;
}

.enhancement-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 26px;
}

.enhancement-grid article {
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .18);
  padding: 22px;
}

.enhancement-grid p {
  color: rgba(255, 255, 255, .76);
}

img {
  background: var(--soft);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-links a {
  color: var(--accent-dark);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media (max-width: 520px) {
  h1 {
    font-size: clamp(2.5rem, 15vw, 3.4rem);
  }
}

@media (max-width: 860px) {
  .site-header,
  .feature-band {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero,
  .intro-grid,
  .content-grid,
  .image-grid,
  .resource-grid,
  .logo-grid,
  .proof-strip,
  .enhancement-grid {
    grid-template-columns: 1fr;
  }

  .proof-strip article { border-right: 0; border-bottom: 1px solid var(--line); }

  .hero {
    min-height: auto;
  }

  .hero-media {
    min-height: 360px;
  }
}