/* ===================================================================
   Tech Architecture  Grid-based, technical, precise
   =================================================================== */

/* Hero  Blueprint grid background */
.sta-hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  background: var(--bg);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.sta-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0;
  pointer-events: none;
  transform: scale(1.3);
}
.sta-hero-content {
  position: relative;
  z-index: 2;
}
.sta-hero-title {
  font-size: clamp(3.5rem, 12vw, 9rem);
  font-weight: 300;
  line-height: 0.95;
  margin: 0 0 30px;
}
.sta-hero-tagline {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.8;
}

/* Sections */
.sta-section {
  padding: 140px 0;
}
.sta-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

/* Stack Cards */
.sta-stack {
  padding: 140px 0;
  border-top: 1px solid var(--border);
}
.sta-stack-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
}
.sta-stack-card {
  background: var(--bg);
  padding: 48px 40px;
  transition: background 0.4s ease;
}
.sta-stack-card:hover {
  background: var(--bg-alt);
}
.sta-stack-icon {
  font-family: "Courier New", monospace;
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 0.1em;
}
.sta-stack-card h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 300;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text);
  margin: 0 0 14px;
}
.sta-stack-card p {
  font-size: 0.92rem;
  margin: 0 0 20px;
}
.sta-stack-tags {
  font-family: "Courier New", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  opacity: 0.7;
}

/* Metrics */
.sta-metrics {
  padding: 140px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
.sta-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
}
.sta-metric {
  background: var(--bg-alt);
  padding: 48px 24px;
  text-align: center;
}
.sta-metric-value {
  font-family: "Courier New", monospace;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 400;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.sta-metric-label {
  font-family: var(--font-sans);
  font-size: 0.62rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* CTA */
.sta-cta {
  padding: 180px 0;
}
.sta-cta-title {
  font-size: clamp(3rem, 10vw, 7.5rem);
}

@media (max-width: 992px) {
  .sta-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  .sta-hero {
    min-height: 80vh;
    min-height: 80dvh;
  }
  .sta-hero-content {
    text-align: center;
  }
  .sta-hero-tagline {
    margin-left: auto;
    margin-right: auto;
  }
  .sta-section,
  .sta-stack,
  .sta-metrics {
    padding: 80px 0;
  }
  .sta-stack-grid {
    grid-template-columns: 1fr;
  }
  .sta-stack-card {
    padding: 36px 28px;
    text-align: center;
  }
  .sta-metric {
    padding: 36px 16px;
  }
  .sta-cta {
    padding: 100px 0;
  }
}
@media (max-width: 540px) {
  .sta-metrics-grid {
    grid-template-columns: 1fr;
  }
}