:root {
  --primary: #004080;
  --gray: #f4f4f4;
  --text: #1d1d1d;
  --accent: #00acc1;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: white;
}

header {
  background: white;
  border-bottom: 1px solid #e0e0e0;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

.logo {
  height: 100px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}

nav a:hover {
  color: var(--accent);
}

.hero {
  background: linear-gradient(to right, #002244, #004080);
  color: white;
  padding: 4rem 1rem;
  text-align: center;
}

.section {
  padding: 4rem 1rem;
}

.light {
  background: var(--gray);
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

.narrow {
  max-width: 700px;
  margin: auto;
  text-align: center;
}

h2 {
  font-weight: 600;
  text-align: center;
  margin-bottom: 2rem;
}

.grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: white;
  padding: 1.5rem;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  transition: 0.3s;
}

.card:hover {
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}

footer {
  background: var(--primary);
  color: white;
  text-align: center;
  padding: 2rem 1rem;
}