:root {
  color-scheme: dark;
  --background: #071019;
  --panel: #101c28;
  --panel-border: #26394b;
  --text: #e7edf3;
  --muted: #9eafbd;
  --accent: #6fd1c4;
  --accent-soft: rgba(111, 209, 196, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--background);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 10%, rgba(46, 105, 120, 0.24), transparent 35rem),
    linear-gradient(145deg, #071019, #0b1621);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
  width: min(72rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 5rem 0 2rem;
}

.hero {
  max-width: 48rem;
  margin-bottom: 3rem;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.introduction {
  max-width: 42rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.7;
}

.functions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  min-height: 15rem;
  padding: 1.5rem;
  border: 1px solid var(--panel-border);
  border-radius: 1rem;
  background: rgba(16, 28, 40, 0.88);
  box-shadow: 0 1.25rem 3rem rgba(0, 0, 0, 0.18);
}

.card h2 {
  margin: 1.5rem 0 0.75rem;
  font-size: 1.35rem;
}

.card p {
  min-height: 3.5rem;
  margin: 0 0 1.5rem;
  color: var(--muted);
  line-height: 1.6;
}

.status {
  display: inline-block;
  padding: 0.35rem 0.65rem;
  border: 1px solid rgba(111, 209, 196, 0.35);
  border-radius: 999px;
  color: var(--accent);
  background: var(--accent-soft);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.action {
  color: #728493;
  font-size: 0.9rem;
  font-weight: 650;
}

footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--panel-border);
  color: #758695;
  font-size: 0.8rem;
}

@media (max-width: 44rem) {
  .shell {
    padding-top: 3rem;
  }

  .functions {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: auto;
  }
}