:root {
  --bg: #0b1020;
  --bg-soft: #11182f;
  --surface: #ffffff;
  --surface-2: #f5f7fb;
  --ink: #0f172a;
  --ink-soft: #475569;
  --line: #e2e8f0;
  --primary: #4f46e5;
  --primary-strong: #4338ca;
  --primary-soft: #eef2ff;
  --accent: #f97316;
  --success: #10b981;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 14px;
  --radius-sm: 8px;
  --max: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--surface-2);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre { font-family: var(--mono); }

img { max-width: 100%; display: block; }

.skip-link {
  position: absolute;
  left: -10000px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
  border-radius: 6px;
}
.skip-link:focus { left: 12px; top: 12px; }

/* Header / nav --------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #6366f1);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.95rem;
}
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-cta {
  background: var(--ink);
  color: #fff !important;
  padding: 8px 14px;
  border-radius: 999px;
}
.nav-cta:hover { background: #1e293b; }

/* Hero ----------------------------------------------------------------- */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 80px 24px 64px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.05;
  margin: 12px 0 16px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--primary);
  margin: 0;
}

.lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 36em;
  margin: 0 0 24px;
}
.lede.center { text-align: center; margin-left: auto; margin-right: auto; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.05s ease, background 0.15s ease, color 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-strong); }
.btn-secondary {
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
}
.btn-secondary:hover { background: var(--surface-2); }

.hero-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0;
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.hero-card h3 {
  font-size: 1.1rem;
  margin: 0 0 8px;
}
.hero-card p { color: var(--ink-soft); margin: 0 0 16px; }
.hero-card h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 16px 0 6px;
}
.hero-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--ink);
}
.hero-card li { margin: 4px 0; }

.card-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-bottom: 12px;
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-green { background: var(--success); }
.dot-amber { background: #f59e0b; }
.dot-red   { background: #ef4444; }
.card-title { margin-left: 8px; font-family: var(--mono); font-size: 0.8rem; }

/* Sections ------------------------------------------------------------- */
section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 64px 24px;
}
section h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  text-align: center;
}

/* Features ------------------------------------------------------------- */
.features .grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.feature:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.feature-icon {
  display: inline-grid;
  place-items: center;
  width: 42px; height: 42px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 1.4rem;
  margin-bottom: 12px;
}
.feature h3 { margin: 0 0 6px; font-size: 1.05rem; }
.feature p  { color: var(--ink-soft); margin: 0; font-size: 0.95rem; }

/* How it works --------------------------------------------------------- */
.steps {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
.steps li {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
}
.step-num {
  display: inline-grid;
  place-items: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 12px;
}
.steps h3 { margin: 0 0 6px; font-size: 1.02rem; }
.steps p  { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }

/* Install -------------------------------------------------------------- */
.install-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.install-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.install-card header { display: flex; flex-direction: column; gap: 6px; }
.install-tag {
  align-self: flex-start;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 999px;
}
.install-card h3 { margin: 0; font-size: 1.15rem; }
.install-card pre {
  background: var(--bg);
  color: #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 0.85rem;
  overflow-x: auto;
  margin: 0;
  line-height: 1.6;
}
.install-card p { color: var(--ink-soft); margin: 0; font-size: 0.92rem; }

/* Architecture --------------------------------------------------------- */
.arch-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.arch-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.arch-card h3 { margin: 0 0 16px; }
.arch-card svg { width: 100%; height: auto; }

.box-primary   { fill: #eef2ff; stroke: var(--primary); stroke-width: 1.5; }
.box-secondary { fill: #ecfdf5; stroke: var(--success); stroke-width: 1.5; }
.box-accent    { fill: #fff7ed; stroke: var(--accent);  stroke-width: 1.5; }
.box-title { font-size: 14px; font-weight: 700; fill: var(--ink); font-family: var(--font); }
.box-sub   { font-size: 11px; fill: var(--ink-soft); font-family: var(--mono); }
.link      { stroke: var(--ink-soft); stroke-width: 1.5; stroke-dasharray: 4 4; }

/* CTA band ------------------------------------------------------------- */
.cta-band {
  background: linear-gradient(135deg, var(--primary), #6366f1);
  color: #fff;
  text-align: center;
  border-radius: var(--radius);
  padding: 56px 24px;
  margin: 32px auto 64px;
  max-width: var(--max);
}
.cta-band h2 { color: #fff; }
.cta-band p  { color: rgba(255,255,255,0.85); margin: 0 auto 24px; max-width: 36em; }
.cta-band .cta-row { justify-content: center; }
.cta-band .btn-primary { background: #fff; color: var(--primary); }
.cta-band .btn-primary:hover { background: #f1f5f9; }
.cta-band .btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}
.cta-band .btn-secondary:hover { background: rgba(255,255,255,0.1); }

/* Footer --------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 24px;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

/* Responsive ----------------------------------------------------------- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 56px; }
  .features .grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .install-grid { grid-template-columns: 1fr; }
  .arch-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .features .grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .nav-links { gap: 14px; font-size: 0.9rem; }
  .nav-links li:nth-child(3),
  .nav-links li:nth-child(4) { display: none; }
}