:root {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: #e2e8f0;
  background: #020617;
}

* {
  box-sizing: border-box;
}

html,
body,
#root {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(circle at 10% -10%, #1e293b, #020617 55%);
}

.site-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 1rem 1rem 2.5rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
  margin-bottom: 1rem;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
}

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

.topbar a {
  color: #93c5fd;
  text-decoration: none;
  font-size: 0.92rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 1rem;
  background: rgba(15, 23, 42, 0.72);
}

.eyebrow {
  font-size: 0.78rem;
  color: #60a5fa;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0;
}

h1 {
  margin: 0.5rem 0;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}

.hero-copy {
  color: #cbd5e1;
  line-height: 1.5;
}

.cta-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.6rem;
  padding: 0.58rem 0.9rem;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  font-weight: 600;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: #bfdbfe;
  border-color: rgba(147, 197, 253, 0.4);
}

.spec-card {
  border: 1px solid rgba(148, 163, 184, 0.22);
  background: rgba(2, 6, 23, 0.7);
  border-radius: 0.9rem;
  padding: 0.85rem;
  display: grid;
  gap: 0.6rem;
}

.spec-card label {
  font-size: 0.88rem;
  color: #93c5fd;
}

.spec-card textarea {
  width: 100%;
  border-radius: 0.55rem;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: rgba(15, 23, 42, 0.85);
  color: #f8fafc;
  padding: 0.6rem;
  font-size: 0.9rem;
  resize: vertical;
}

.spec-card pre {
  margin: 0;
  border-radius: 0.55rem;
  padding: 0.55rem;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.15);
  color: #cbd5e1;
  font-size: 0.76rem;
  overflow-x: auto;
}

.feature-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.feature-card,
.workflow,
.pilot {
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 0.9rem;
  background: rgba(15, 23, 42, 0.62);
  padding: 0.85rem;
}

.feature-card h2,
.workflow h2,
.pilot h2 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.feature-card p,
.pilot p {
  margin: 0;
  color: #cbd5e1;
  line-height: 1.45;
}

.workflow {
  margin-top: 1rem;
}

.workflow ol {
  margin: 0.4rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.45rem;
  color: #cbd5e1;
}

.pilot {
  margin-top: 1rem;
}

.pilot-tags {
  margin-top: 0.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pilot-tags span {
  font-size: 0.8rem;
  border: 1px solid rgba(96, 165, 250, 0.35);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  color: #bfdbfe;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

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

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.45rem;
  }
}