:root {
  --bg: #0b0f14;
  --bg-soft: #131a22;
  --ink: #f3f7fb;
  --muted: #b7c6d8;
  --accent: #1fc7b7;
  --accent-soft: #133d45;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 20% -10%, #143048, var(--bg) 40%), var(--bg);
  min-height: 100vh;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  width: min(1100px, 92%);
  margin: 1.25rem auto;
  padding: 1rem;
  border: 1px solid #223244;
  border-radius: 14px;
  background: rgba(8, 12, 18, 0.72);
  backdrop-filter: blur(4px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.brand {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

nav {
  display: flex;
  gap: 1rem;
}

main {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.hero {
  padding: 2.2rem;
  border: 1px solid #1d2c3c;
  border-radius: 20px;
  background: linear-gradient(145deg, rgba(20, 35, 52, 0.78), rgba(7, 11, 16, 0.82));
}

.eyebrow {
  margin-top: 0;
  color: var(--muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

h1 {
  margin: 0 0 0.9rem;
  line-height: 1.1;
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.hero p {
  color: var(--muted);
  max-width: 68ch;
}

.cta {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.75rem 1.1rem;
  border: 1px solid var(--accent);
  border-radius: 10px;
  font-weight: 600;
  color: var(--ink);
  background: linear-gradient(135deg, var(--accent-soft), transparent);
}

.card-grid {
  margin: 1.5rem 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.card {
  padding: 1.25rem;
  border-radius: 14px;
  border: 1px solid #203247;
  background: var(--bg-soft);
}

.card h2 {
  margin-top: 0;
}

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

footer {
  width: min(1100px, 92%);
  margin: 0 auto 2rem;
  color: var(--muted);
}

@media (max-width: 740px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    flex-wrap: wrap;
  }

  .hero {
    padding: 1.5rem;
  }
}