:root {
  color-scheme: light dark;
  --bg: #0b1220;
  --bg-elevated: #111a2e;
  --bg-soft: #162038;
  --ink: #e8eefc;
  --ink-muted: #9aa8c7;
  --border: rgba(148, 163, 184, 0.18);
  --accent: #38bdf8;
  --accent-2: #818cf8;
  --accent-soft: rgba(56, 189, 248, 0.12);
  --ok: #34d399;
  --risk: #fb7185;
  --radius: 14px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --wrap: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(56, 189, 248, 0.16), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(129, 140, 248, 0.14), transparent 50%),
    var(--bg);
  color: var(--ink);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

code {
  font-family: var(--mono);
  font-size: 0.92em;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.1em 0.35em;
  border-radius: 6px;
}

.wrap {
  width: min(var(--wrap), calc(100% - 2rem));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #041018;
  padding: 0.5rem 0.75rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(11, 18, 32, 0.72);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.nav-links {
  display: none;
  gap: 1.25rem;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-cta {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.55rem 1rem;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-lg {
  padding: 0.8rem 1.25rem;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, #38bdf8, #6366f1);
  color: #041018;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border);
}

.btn-ghost {
  color: var(--ink-muted);
}

.btn-ghost:hover {
  color: var(--ink);
}

/* Hero */
.hero {
  padding: 4.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin: 0 0 1rem;
}

.gradient {
  background: linear-gradient(120deg, #7dd3fc 10%, #a5b4fc 45%, #f0abfc 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  font-size: 1.1rem;
  color: var(--ink-muted);
  max-width: 40rem;
  margin: 0 0 1.5rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.trust-row {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  padding: 0;
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.trust-row strong {
  color: var(--ink);
}

.hero-panel .panel-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-muted);
  font-size: 0.88rem;
  margin-bottom: 1rem;
}

.dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.15);
}

.chip {
  margin-left: auto;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.metric-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.metric {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem;
}

.metric-label {
  display: block;
  color: var(--ink-muted);
  font-size: 0.78rem;
  margin-bottom: 0.25rem;
}

.metric-value {
  display: block;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.metric-hint {
  display: block;
  margin-top: 0.2rem;
  color: var(--ink-muted);
  font-size: 0.75rem;
}

.snippet {
  margin: 1rem 0 0;
  padding: 1rem;
  overflow-x: auto;
  background: #070b14;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: #cbd5e1;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.55;
}

.snippet code {
  background: none;
  padding: 0;
}

/* Sections */
.logos-strip {
  border-block: 1px solid var(--border);
  padding: 1rem 0;
  background: rgba(255, 255, 255, 0.02);
}

.strip-label {
  margin: 0;
  text-align: center;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.015);
  border-block: 1px solid var(--border);
}

.section-head {
  text-align: center;
  max-width: 46rem;
  margin: 0 auto 2.5rem;
}

.section-head.left {
  text-align: left;
  margin-left: 0;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
}

.section-head p {
  margin: 0;
  color: var(--ink-muted);
}

.cards.three {
  display: grid;
  gap: 1rem;
}

.card,
.feature,
.start-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
}

.card h3,
.feature h3,
.start-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.card p,
.feature p,
.start-card p {
  margin: 0;
  color: var(--ink-muted);
}

.feature-grid {
  display: grid;
  gap: 1rem;
}

.feature-icon {
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.stack-grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.stack-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-muted);
}

.stack-list li {
  margin-bottom: 0.55rem;
}

.stack-list strong {
  color: var(--ink);
}

.arch {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  padding: 1.25rem;
  display: grid;
  gap: 0.75rem;
}

.arch-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.6rem;
}

.arch-box {
  text-align: center;
  padding: 0.85rem 0.5rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  font-size: 0.88rem;
  font-weight: 600;
}

.arch-core {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.16), rgba(99, 102, 241, 0.16));
  border-color: rgba(56, 189, 248, 0.35);
}

.arch-arrow {
  text-align: center;
  color: var(--ink-muted);
  font-size: 0.8rem;
}

.start-grid {
  display: grid;
  gap: 1rem;
}

.muted {
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.cta-band {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid rgba(56, 189, 248, 0.28);
  background: linear-gradient(120deg, rgba(56, 189, 248, 0.1), rgba(99, 102, 241, 0.1));
}

.cta-band h3 {
  margin: 0 0 0.25rem;
}

.cta-band p {
  margin: 0;
  color: var(--ink-muted);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.boundary {
  display: grid;
  gap: 1rem;
}

.boundary-col {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.25rem 1.4rem;
  background: var(--bg-elevated);
}

.boundary-col h3 {
  margin: 0 0 0.75rem;
}

.boundary-col ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-muted);
}

.boundary-col li {
  margin-bottom: 0.45rem;
}

.boundary-col.yes {
  border-color: rgba(52, 211, 153, 0.35);
}

.boundary-col.no {
  border-color: rgba(251, 113, 133, 0.3);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 2.5rem;
  margin-top: 1rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: flex-start;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--ink-muted);
}

.footer-links a:hover {
  color: var(--ink);
}

@media (min-width: 800px) {
  .nav-links {
    display: flex;
  }

  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .cards.three {
    grid-template-columns: repeat(3, 1fr);
  }

  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .start-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 799px) {
  .nav-cta .btn-ghost {
    display: none;
  }

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

  .arch-row {
    grid-template-columns: 1fr;
  }
}