:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #07100e;
  color: #f2fbf7;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 75% 15%, rgba(16, 185, 129, 0.2), transparent 28rem),
    radial-gradient(circle at 10% 80%, rgba(34, 211, 238, 0.12), transparent 25rem),
    linear-gradient(145deg, #07100e, #0a1c19 55%, #07100e);
}

.shell {
  width: min(1180px, calc(100% - 2rem));
  min-height: 100vh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  padding: 1.5rem 0;
}

.nav,
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 750;
}

.brand-mark {
  width: 2.6rem;
  height: 2.6rem;
  display: grid;
  place-items: center;
  border: 1px solid rgba(110, 231, 183, 0.4);
  border-radius: 0.8rem;
  background: rgba(16, 185, 129, 0.13);
  color: #a7f3d0;
  font-size: 0.8rem;
}

.environment,
.status {
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 999px;
  background: rgba(10, 35, 30, 0.72);
}

.environment {
  padding: 0.5rem 0.8rem;
  color: #86efac;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero {
  max-width: 900px;
  margin: auto 0;
  padding: clamp(4rem, 10vw, 8rem) 0;
}

.eyebrow {
  margin: 0 0 1rem;
  color: #6ee7b7;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.summary {
  max-width: 680px;
  margin: 2rem 0;
  color: #b7d3c9;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.65;
}

.status {
  width: fit-content;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.8rem 1rem;
  color: #d8f3e8;
  font-size: 0.9rem;
}

.pulse {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 0.35rem rgba(52, 211, 153, 0.14);
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 4rem;
}

.features article {
  padding: 1.4rem;
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 1.2rem;
  background: rgba(8, 29, 25, 0.56);
}

.features article > span {
  color: #5eead4;
  font-size: 0.72rem;
  font-weight: 800;
}

.features h2 {
  margin: 1rem 0 0.6rem;
  font-size: 1.1rem;
}

.features p {
  margin: 0;
  color: #91aca3;
  font-size: 0.92rem;
  line-height: 1.6;
}

footer {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(148, 163, 184, 0.14);
  color: #6f8d83;
  font-size: 0.82rem;
}

@media (max-width: 760px) {
  .features {
    grid-template-columns: 1fr;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}