:root {
  --bg: #0b0f14;
  --panel: #111821;
  --panel-2: #17212d;
  --text: #ecf2f8;
  --muted: #9fb0c3;
  --line: rgba(236, 242, 248, 0.14);
  --accent: #87f0c3;
  --accent-2: #9db7ff;
  --danger: #ffb4a8;
  --max: 1160px;
  --radius: 24px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 0%, rgba(135, 240, 195, 0.16), transparent 34rem),
    radial-gradient(circle at 88% 12%, rgba(157, 183, 255, 0.14), transparent 32rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: inherit; }

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  padding: 0.7rem 1rem;
  background: var(--accent);
  color: #07110d;
  border-radius: 999px;
  z-index: 100;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(11, 15, 20, 0.72);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem clamp(1rem, 4vw, 2rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.brand-mark {
  color: var(--accent);
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a {
  text-decoration: none;
  transition: color 180ms ease;
}

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

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 999px;
  padding: 0.5rem 0.8rem;
}

.section,
.section-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(4rem, 8vw, 7rem) clamp(1rem, 4vw, 2rem);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.hero {
  min-height: calc(100vh - 74px);
}

.eyebrow,
.card-kicker {
  margin: 0 0 1rem;
  color: var(--accent);
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 0.76rem;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 850px;
  font-size: clamp(3rem, 8vw, 6.8rem);
  line-height: 0.92;
  letter-spacing: -0.075em;
  margin-bottom: 1.4rem;
}

h2 {
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 1;
  letter-spacing: -0.055em;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.2rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
}

.boundary-line {
  display: inline-flex;
  margin: 1rem 0 1.6rem;
  padding: 0.8rem 1rem;
  color: var(--accent);
  background: rgba(135, 240, 195, 0.08);
  border: 1px solid rgba(135, 240, 195, 0.22);
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.8rem 1.1rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 750;
  border: 1px solid var(--line);
}

.button.primary {
  background: var(--accent);
  color: #07110d;
  border-color: transparent;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.04);
}

.hero-card,
.card,
.metric,
.evidence-panel,
.contact-card,
.muted-box {
  background: linear-gradient(145deg, rgba(255,255,255,0.075), rgba(255,255,255,0.035));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: clamp(1.3rem, 3vw, 2rem);
}

.hero-card h2 {
  font-size: clamp(1.8rem, 3.5vw, 3rem);
}

.hero-card p:last-child,
.card p:last-child,
.evidence-panel p:last-child,
.contact-card p:last-child,
.muted-box p:last-child { margin-bottom: 0; }

.section-heading {
  max-width: 800px;
  margin-bottom: 2rem;
}

.wide-copy {
  max-width: 920px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.metric {
  padding: 1.3rem;
}

.metric-value {
  display: block;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1;
  font-weight: 850;
  letter-spacing: -0.05em;
  color: var(--accent);
}

.metric-label {
  display: block;
  margin-top: 0.7rem;
  color: var(--muted);
}

.proof-grid,
.pilot-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.8fr);
  gap: 1rem;
}

.proof-copy,
.pilot-copy {
  padding: 1.6rem 0;
  color: var(--muted);
}

.check-list {
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.check-list li::before {
  content: "✓";
  color: var(--accent);
  margin-right: 0.6rem;
}

.evidence-panel {
  padding: 1.2rem;
  color: var(--muted);
}

.evidence-panel img {
  width: 100%;
  display: block;
  border-radius: 18px;
  border: 1px solid var(--line);
  margin-bottom: 1rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  padding: 1.3rem;
}

.card p,
.pilot-copy,
.proof-copy p {
  color: var(--muted);
}

.gate-box {
  display: grid;
  gap: 0.7rem;
}

.gate-box div {
  display: grid;
  gap: 0.1rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,255,255,0.04);
}

.gate-box strong {
  color: var(--accent-2);
  letter-spacing: 0.06em;
}

.gate-box span {
  color: var(--muted);
}

.muted-box {
  padding: 1.4rem;
}

.contact-card {
  padding: clamp(1.3rem, 3vw, 2rem);
  max-width: 760px;
}

.contact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.contact-line span:first-child {
  color: var(--muted);
}

.copy-button {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border-radius: 999px;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
}

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem clamp(1rem, 4vw, 2rem);
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .section-grid,
  .proof-grid,
  .pilot-layout,
  .metrics {
    grid-template-columns: 1fr;
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .nav {
    align-items: flex-start;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: 64px;
    left: 1rem;
    right: 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: rgba(17, 24, 33, 0.96);
    border: 1px solid var(--line);
    border-radius: 18px;
  }

  .nav-links[data-open="true"] {
    display: flex;
  }

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

  h1 {
    font-size: clamp(2.8rem, 16vw, 4.5rem);
  }
}