:root {
  --bg: #07111f;
  --panel: #0d1b2e;
  --panel-2: #10233c;
  --line: rgba(148, 163, 184, 0.22);
  --text: #f8fafc;
  --muted: #9fb0c7;
  --brand: #22d3ee;
  --brand-2: #38bdf8;
  --ok: #22c55e;
  --warn: #f59e0b;
  --bad: #ef4444;
  --radius: 8px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.site-shell {
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 0%, rgba(34, 211, 238, 0.18), transparent 34rem),
    radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.13), transparent 28rem),
    linear-gradient(180deg, #07111f 0%, #081526 44%, #07111f 100%);
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 17, 31, 0.88);
  backdrop-filter: blur(18px);
}
.nav-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.01em;
}
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), #2563eb);
  color: #04111f;
  font-weight: 900;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.94rem;
}
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; gap: 10px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  font-weight: 700;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}
.btn.primary {
  color: #03111d;
  border-color: transparent;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}
.btn:hover { transform: translateY(-1px); }

.hero {
  padding: 86px 0 60px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 42px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 7px 10px;
  border: 1px solid rgba(34, 211, 238, 0.28);
  border-radius: 999px;
  color: #bff4ff;
  background: rgba(34, 211, 238, 0.08);
  font-size: 0.86rem;
  font-weight: 700;
}
h1, h2, h3 { line-height: 1.12; margin: 0; }
h1 {
  max-width: 780px;
  font-size: clamp(2.6rem, 6vw, 5.5rem);
  letter-spacing: -0.055em;
}
.lead {
  margin: 22px 0 0;
  max-width: 720px;
  color: #c7d2e5;
  font-size: clamp(1.05rem, 2vw, 1.28rem);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.metric-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 34px;
}
.metric {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(13, 27, 46, 0.72);
}
.metric strong {
  display: block;
  color: var(--brand);
  font-size: 1.55rem;
  line-height: 1;
}
.metric span { color: var(--muted); font-size: 0.82rem; }

.product-frame {
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #091426;
  box-shadow: var(--shadow);
}
.window-bar {
  display: flex;
  gap: 7px;
  padding: 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--bad); }
.dot:nth-child(2) { background: var(--warn); }
.dot:nth-child(3) { background: var(--ok); }
.dashboard-preview {
  padding: 18px;
  display: grid;
  gap: 14px;
}
.alarm-strip, .mini-grid { display: grid; gap: 10px; }
.alarm-strip { grid-template-columns: repeat(3, 1fr); }
.mini-grid { grid-template-columns: 1.2fr 0.8fr; }
.mini-card {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
}
.mini-card b { display: block; font-size: 1.45rem; }
.mini-card p { margin: 6px 0 0; color: var(--muted); font-size: 0.85rem; }
.rca-line {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.88rem;
}

.section { padding: 72px 0; }
.section-head {
  max-width: 760px;
  margin-bottom: 30px;
}
.center { text-align: center; margin-left: auto; margin-right: auto; }
.section h2 {
  font-size: clamp(2rem, 4vw, 3.35rem);
  letter-spacing: -0.04em;
}
.section p { color: var(--muted); }
.grid { display: grid; gap: 16px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.four { grid-template-columns: repeat(4, 1fr); }
.card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(13, 27, 46, 0.78);
}
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p, .card li { color: var(--muted); }
.icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  border-radius: 8px;
  background: rgba(34, 211, 238, 0.11);
  color: var(--brand);
  font-weight: 900;
}
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 18px 0 0; list-style: none; }
.tag-list li {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #d6e4f6;
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.88rem;
}

.architecture {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(16, 35, 60, 0.88), rgba(7, 17, 31, 0.88));
}
.arch-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 12px;
}
.arch-box {
  min-height: 74px;
  display: grid;
  place-items: center;
  padding: 12px;
  border: 1px solid rgba(34, 211, 238, 0.22);
  border-radius: var(--radius);
  text-align: center;
  background: rgba(34, 211, 238, 0.07);
  font-weight: 800;
  color: #dff9ff;
}
pre {
  white-space: pre-wrap;
  overflow: auto;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #d8e6f7;
  background: #06101d;
}
code { font-family: "SFMono-Regular", Consolas, monospace; }

.page-hero {
  padding: 70px 0 34px;
  border-bottom: 1px solid var(--line);
}
.page-hero h1 { font-size: clamp(2.2rem, 5vw, 4.5rem); }

.dashboard-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - 72px);
}
.sidebar {
  padding: 22px;
  border-right: 1px solid var(--line);
  background: rgba(6, 16, 29, 0.82);
}
.sidebar a {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--muted);
}
.sidebar a:hover { background: rgba(255, 255, 255, 0.06); color: var(--text); }
.dash-main { padding: 24px; }
.status {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 5px 9px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
}
.status.ok { background: rgba(34, 197, 94, 0.13); color: #86efac; }
.status.bad { background: rgba(239, 68, 68, 0.14); color: #fca5a5; }
.table {
  width: 100%;
  border-collapse: collapse;
}
.table th, .table td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.table th { color: #d6e4f6; font-size: 0.82rem; }
.table td { color: var(--muted); }
.chat {
  display: grid;
  gap: 10px;
}
.bubble {
  padding: 12px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  color: #dce8f8;
}
.bubble.ai { border-left: 3px solid var(--brand); }

.footer {
  border-top: 1px solid var(--line);
  padding: 42px 0;
  background: #050d18;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 24px;
}
.footer a, .footer p { color: var(--muted); }
.footer h3 { font-size: 1rem; margin-bottom: 12px; }
.footer-links { display: grid; gap: 8px; }
.legal {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 980px) {
  .nav-links { display: none; }
  .hero-grid, .grid.two, .grid.three, .grid.four, .footer-grid, .dashboard-layout { grid-template-columns: 1fr; }
  .metric-row, .alarm-strip, .arch-row { grid-template-columns: repeat(2, 1fr); }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--line); }
}
@media (max-width: 620px) {
  .container { width: min(100% - 28px, 1180px); }
  .nav-cta .btn:first-child { display: none; }
  .metric-row, .alarm-strip, .mini-grid, .arch-row { grid-template-columns: 1fr; }
  .hero { padding-top: 54px; }
  .section { padding: 52px 0; }
}