:root {
  --blue-900: #0a1f4d;
  --blue-800: #0e2c6b;
  --blue-700: #143a94;
  --blue-600: #1a4fd6;
  --blue-500: #2f6fed;
  --blue-100: #eaf1ff;
  --white: #ffffff;
  --ink-900: #101828;
  --ink-600: #4b5563;
  --ink-400: #9aa4b2;
  --surface: #f6f8fc;
  --border: #e3e8f2;

  --font-display: "Baloo 2", "Inter", sans-serif;
  --font-body: "Inter", sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;

  --shadow-sm: 0 2px 8px rgba(10, 31, 77, 0.06);
  --shadow-md: 0 12px 32px rgba(10, 31, 77, 0.12);

  --header-h: 108px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; margin: 0; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}
.icon-sm { width: 16px; height: 16px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-sm { padding: 9px 18px; font-size: 0.875rem; }
.btn-primary { background: var(--blue-600); color: var(--white); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--blue-700); box-shadow: var(--shadow-md); }
.btn-light { background: var(--white); color: var(--blue-700); box-shadow: var(--shadow-sm); }
.btn-light:hover { box-shadow: var(--shadow-md); }
.btn-outline-light { border-color: rgba(255, 255, 255, 0.6); color: var(--white); }
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.12); border-color: var(--white); }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: var(--white); box-shadow: 0 1px 0 var(--border); }

.topbar { background: var(--blue-900); color: rgba(255, 255, 255, 0.85); font-size: 0.82rem; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 40px; }
.topbar-contact { display: flex; align-items: center; gap: 20px; }
.topbar-contact a { display: inline-flex; align-items: center; gap: 6px; transition: color 0.15s ease; }
.topbar-contact a:hover { color: var(--white); }

.social-icons { display: flex; align-items: center; gap: 14px; }
.social-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: inherit;
  opacity: 0.9;
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.social-icons a:hover { opacity: 1; transform: translateY(-1px); color: var(--blue-500); }
.social-icons-dark a { color: var(--blue-800); }
.social-icons-dark a:hover { color: var(--blue-600); }

.navbar { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }

.brand { display: inline-flex; align-items: center; }
.brand-logo { display: block; height: 36px; width: auto; }
.brand-icon { display: block; height: 44px; width: auto; }

.nav-links { display: flex; align-items: center; gap: 32px; font-weight: 600; font-size: 0.95rem; }
.nav-links a { color: var(--ink-600); transition: color 0.15s ease; position: relative; }
.nav-links a:hover { color: var(--blue-600); }

.nav-cta { margin-left: auto; }
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--blue-800);
  padding: 6px;
}

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(120% 140% at 15% 10%, var(--blue-500) 0%, var(--blue-700) 45%, var(--blue-900) 100%);
  color: var(--white);
  overflow: hidden;
  position: relative;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 40px;
  padding: 88px 24px;
  min-height: 480px;
}
.eyebrow {
  display: inline-block;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.12);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.eyebrow-dark { color: var(--blue-600); background: var(--blue-100); }

.hero-copy h1 { font-size: clamp(2rem, 4vw, 3rem); line-height: 1.15; margin-bottom: 18px; }
.hero-copy h1 span { color: #ffd166; }
.hero-copy p { font-size: 1.05rem; color: rgba(255, 255, 255, 0.88); max-width: 46ch; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-art { position: relative; height: 320px; display: flex; align-items: center; justify-content: center; }
.hero-blob {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 42% 58% 65% 35% / 45% 40% 60% 55%;
  border: 1px solid rgba(255, 255, 255, 0.18);
}
.hero-plane { width: 140px; height: 140px; position: relative; filter: drop-shadow(0 10px 20px rgba(0,0,0,0.25)); }

/* ---------- Promo banner ---------- */
.promo-banner {
  background: var(--blue-900);
  padding: 48px 0;
}
.promo-banner-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* ---------- Section heading ---------- */
.section-heading { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-heading h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); color: var(--ink-900); margin-top: 14px; }

/* ---------- Services ---------- */
.services { padding: 96px 0; background: var(--white); }
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: var(--blue-100);
  color: var(--blue-600);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.service-card h3 { font-size: 1.1rem; margin-bottom: 10px; color: var(--ink-900); }
.service-card p { color: var(--ink-600); font-size: 0.92rem; }

/* ---------- Stats ---------- */
.stats { background: var(--blue-900); color: var(--white); padding: 56px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.stat-item .icon { width: 26px; height: 26px; color: #ffd166; margin-bottom: 4px; }
.stat-item strong { font-family: var(--font-display); font-size: 1.9rem; }
.stat-item span { color: rgba(255, 255, 255, 0.75); font-size: 0.9rem; }

/* ---------- Contact ---------- */
.contact { padding: 96px 0; background: var(--surface); }
.contact-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.contact-info h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin: 14px 0 16px; }
.contact-info p { color: var(--ink-600); margin-bottom: 28px; max-width: 46ch; }

.contact-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }
.contact-list li { display: flex; align-items: center; gap: 12px; color: var(--ink-600); font-size: 0.95rem; }
.contact-list .icon { color: var(--blue-600); }
.contact-list a:hover { color: var(--blue-600); }

.contact-form {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-row { display: flex; flex-direction: column; gap: 8px; }
.form-row label { font-size: 0.85rem; font-weight: 600; color: var(--ink-600); }
.form-row input, .form-row textarea {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  resize: vertical;
  transition: border-color 0.15s ease;
}
.form-row input:focus, .form-row textarea:focus { outline: none; border-color: var(--blue-500); }
.contact-form .btn { justify-content: center; margin-top: 4px; }
.form-status { font-size: 0.9rem; color: var(--blue-600); min-height: 1.2em; }

/* ---------- Footer ---------- */
.site-footer { background: var(--blue-900); color: rgba(255, 255, 255, 0.8); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
.footer-brand p { margin-top: 16px; font-size: 0.9rem; color: rgba(255, 255, 255, 0.65); max-width: 32ch; }
.footer-col h4 { color: var(--white); font-size: 0.95rem; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 12px; font-size: 0.9rem; }
.footer-col .social-icons { flex-direction: row; gap: 14px; }
.footer-col a { transition: color 0.15s ease; }
.footer-col a:hover { color: var(--white); }
.footer-contact .contact-list { margin-bottom: 20px; }
.footer-contact .contact-list li { color: rgba(255, 255, 255, 0.75); }
.footer-contact .contact-list .icon { color: #ffd166; }
.footer-contact .social-icons a { color: rgba(255, 255, 255, 0.8); }
.footer-contact .social-icons a:hover { color: var(--white); }

.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.12); padding: 20px 24px; text-align: center; font-size: 0.85rem; color: rgba(255, 255, 255, 0.6); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; padding: 56px 24px; text-align: center; }
  .hero-copy p { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-art { height: 220px; }

  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .contact-inner { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }

  .topbar-contact a:last-child { display: none; }
}

@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 20px;
    box-shadow: var(--shadow-md);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }
  .nav-links.open { opacity: 1; transform: translateY(0); visibility: visible; }
  .menu-toggle { display: inline-flex; }
  .nav-cta { display: none; }

  .promo-banner { padding: 32px 0; }
  .services { padding: 64px 0; }
  .contact { padding: 64px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 480px) {
  .services-grid { grid-template-columns: 1fr; }
  .topbar-contact { gap: 12px; }
}