:root {
  --bg: #f7fafc;
  --surface: #ffffff;
  --ink: #101820;
  --muted: #5d6b78;
  --line: #dfe7ee;
  --blue: #0b74d1;
  --blue-dark: #074f91;
  --teal: #30c7c9;
  --shadow: 0 24px 80px rgba(16, 24, 32, 0.10);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, rgba(48,199,201,0.18), transparent 34%), var(--bg);
  color: var(--ink);
}
a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  background: rgba(247, 250, 252, 0.86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(223,231,238,0.8);
}
.brand img {
  display: block;
  width: min(260px, 52vw);
  height: auto;
}
.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 0.95rem;
  color: var(--muted);
}
.nav a:hover { color: var(--ink); }
.nav-cta {
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--ink);
  color: white !important;
}

.section {
  padding: clamp(64px, 9vw, 120px) clamp(20px, 5vw, 72px);
  max-width: 1240px;
  margin: 0 auto;
}
.hero {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: clamp(36px, 7vw, 90px);
  align-items: center;
  min-height: calc(100vh - 88px);
}
.eyebrow, .section-kicker {
  color: var(--blue);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 24px;
  font-size: clamp(3.2rem, 8vw, 6.8rem);
  line-height: 0.92;
  letter-spacing: -0.07em;
}
h2 {
  font-size: clamp(2rem, 4.4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.055em;
  margin-bottom: 24px;
}
h3 {
  font-size: 1.18rem;
  margin-bottom: 12px;
}
p {
  color: var(--muted);
  line-height: 1.65;
  font-size: 1.03rem;
}
.hero-subtitle {
  font-size: clamp(1.12rem, 2.2vw, 1.45rem);
  max-width: 720px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 34px 0 18px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid var(--line);
}
.button.primary {
  background: linear-gradient(135deg, var(--blue), var(--teal));
  color: white;
  border: 0;
  box-shadow: 0 12px 32px rgba(11,116,209,0.28);
}
.button.secondary {
  background: rgba(255,255,255,0.75);
  color: var(--ink);
}
.note { font-size: 0.95rem; }

.hero-card {
  padding: 18px;
  border-radius: calc(var(--radius) + 10px);
  background: linear-gradient(145deg, rgba(255,255,255,0.8), rgba(255,255,255,0.4));
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: var(--shadow);
}
.signal-card {
  position: relative;
  overflow: hidden;
  min-height: 440px;
  padding: 34px;
  border-radius: var(--radius);
  background: linear-gradient(165deg, #101820, #14283b 60%, #0b74d1);
  color: white;
}
.signal-card::before {
  content: "";
  position: absolute;
  inset: auto -70px -90px auto;
  width: 260px;
  height: 260px;
  border: 36px solid rgba(255,255,255,0.12);
  border-radius: 50%;
}
.card-label {
  color: rgba(255,255,255,0.72);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 42px;
}
.metric-row {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
.metric-row span { color: rgba(255,255,255,0.72); }
.metric-row strong { color: white; }
.signal-lines {
  position: absolute;
  left: 34px;
  right: 34px;
  bottom: 34px;
  display: grid;
  gap: 12px;
}
.signal-lines span {
  height: 5px;
  border-radius: 999px;
  background: rgba(255,255,255,0.18);
  overflow: hidden;
}
.signal-lines span::after {
  content: "";
  display: block;
  height: 100%;
  width: 65%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), white);
}
.signal-lines span:nth-child(2)::after { width: 47%; }
.signal-lines span:nth-child(3)::after { width: 78%; }

.split {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: clamp(28px, 6vw, 80px);
  align-items: start;
}
.body-text {
  padding-top: 18px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 38px;
}
.feature {
  min-height: 220px;
  padding: 28px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 10px 28px rgba(16, 24, 32, 0.05);
}
.demo-band {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 36px;
  align-items: center;
  background: #101820;
  color: white;
  max-width: none;
  margin: 40px 0;
  padding-left: clamp(20px, 8vw, 120px);
  padding-right: clamp(20px, 8vw, 120px);
}
.demo-band h2, .demo-band p { max-width: 760px; }
.demo-band p { color: rgba(255,255,255,0.72); }
.video-placeholder {
  display: grid;
  place-items: center;
  min-height: 300px;
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.16);
  background: linear-gradient(135deg, rgba(11,116,209,0.34), rgba(48,199,201,0.18));
}
.video-placeholder span {
  color: rgba(255,255,255,0.72);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.pilot {
  text-align: center;
  max-width: 900px;
}
.pilot p { max-width: 760px; margin-left: auto; margin-right: auto; }
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}
.site-footer a { color: var(--blue-dark); font-weight: 700; }

@media (max-width: 980px) {
  .hero, .split, .demo-band { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 72px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .nav a:not(.nav-cta) { display: none; }
}
@media (max-width: 620px) {
  .site-header { align-items: flex-start; }
  .brand img { width: 210px; }
  .feature-grid { grid-template-columns: 1fr; }
  .signal-card { min-height: 380px; padding: 24px; }
  .site-footer { flex-direction: column; }
}