:root {
  --sky: #1f6fb2;
  --sky-dark: #144a76;
  --orange: #e8792c;
  --cream: #f7f5ef;
  --ink: #1c2530;
  --line: #dfe3e8;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

a {
  color: var(--sky);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3 {
  color: var(--sky-dark);
  line-height: 1.25;
}

/* Header */

.site-header {
  background: #ffffff;
  border-bottom: 3px solid var(--orange);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--sky-dark);
}

.brand-sub {
  font-size: 0.8rem;
  color: var(--orange);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.site-nav {
  display: flex;
  gap: 22px;
}

.site-nav a {
  color: var(--ink);
  font-weight: 600;
}

.site-nav a:hover {
  color: var(--sky);
}

.nav-toggle {
  display: none;
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.nav-burger span {
  width: 26px;
  height: 3px;
  background: var(--sky-dark);
  border-radius: 2px;
}

/* Icons */

.icon {
  width: 1em;
  height: 1em;
}

.icon-badge {
  width: 40px;
  height: 40px;
  color: var(--orange);
  display: block;
  margin-bottom: 10px;
}

.page-header h1 {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-header h1 .icon-badge {
  margin-bottom: 0;
  color: var(--sky);
}

.hero-decor {
  position: absolute;
  color: #fff;
  opacity: 0.16;
}

.hero-decor.plane-1 {
  width: 130px;
  height: 130px;
  top: 10px;
  right: 40px;
  transform: rotate(20deg);
}

.hero-decor.heli-1 {
  width: 100px;
  height: 100px;
  bottom: -10px;
  left: 20px;
  opacity: 0.13;
}

.hero-decor.plane-2 {
  width: 70px;
  height: 70px;
  bottom: 20px;
  right: 220px;
  transform: rotate(-10deg);
  opacity: 0.12;
}

/* Hero */

.hero {
  background: linear-gradient(135deg, var(--sky) 0%, var(--sky-dark) 100%);
  color: #fff;
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}

.hero h1 {
  color: #fff;
  font-size: 2.2rem;
  margin: 0 0 10px;
}

.hero p {
  font-size: 1.15rem;
  max-width: 640px;
  color: #eaf3fb;
}

.button-row {
  margin-top: 22px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--orange);
  color: #fff;
}

.btn-primary:hover {
  background: #cf6a1f;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.22);
}

/* Main content */

main {
  padding: 40px 0 10px;
}

main .wrap,
main > * {
  max-width: 1080px;
}

section {
  margin: 0 auto 46px;
  max-width: 1080px;
  padding: 0 20px;
}

.page-header {
  padding: 40px 20px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.page-header h1 {
  margin: 0 0 8px;
}

.page-header .wrap {
  max-width: 1080px;
}

/* Fact cards */

.fact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.fact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.fact-card h3 {
  margin-top: 0;
  font-size: 1.05rem;
}

.fact-card ul {
  margin: 0;
  padding-left: 18px;
}

/* Gallery */

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.gallery-item {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}

.gallery-item a {
  display: block;
}

.gallery-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  border-radius: var(--radius) var(--radius) 0 0;
}

.gallery-item figcaption {
  padding: 10px 14px;
  font-size: 0.9rem;
  color: var(--ink);
  border-top: 1px solid var(--line);
}

.gallery-empty {
  color: #666;
}

/* Leaders */

.leader-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.leader-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.leader-card .role {
  color: var(--orange);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.leader-card .name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--sky-dark);
}

/* Join steps */

.steps {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.step {
  display: flex;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.step-num {
  flex: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-body h3 {
  margin: 0 0 6px;
}

.step-body p {
  margin: 0 0 6px;
}

@media (max-width: 500px) {
  .step {
    flex-direction: column;
  }
}

/* Footer */

.site-footer {
  background: var(--sky-dark);
  color: #dce8f2;
  margin-top: 40px;
  padding: 40px 0 20px;
}

.site-footer .wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.site-footer h3 {
  color: #fff;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.site-footer a {
  color: #cfe3f2;
}

.site-footer p {
  margin: 4px 0;
}

.footer-bottom {
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
  color: #b9cddf;
}

/* Mobile nav */

@media (max-width: 700px) {
  .nav-burger {
    display: flex;
  }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0;
    order: 3;
  }

  .site-nav a {
    padding: 12px 0;
    border-top: 1px solid var(--line);
  }

  .nav-toggle:checked ~ .site-nav {
    display: flex;
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  .hero-decor.plane-2 {
    display: none;
  }

  .hero-decor.plane-1 {
    width: 80px;
    height: 80px;
  }

  .hero-decor.heli-1 {
    width: 60px;
    height: 60px;
  }
}