:root {
  --navy: #071827;
  --blue: #0b5fff;
  --cyan: #5eead4;
  --text: #132033;
  --muted: #65758b;
  --bg: #f7faff;
  --card: #ffffff;
  --line: #e5edf7;
}

* { 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;
  color: var(--text);
  background: var(--bg);
}

.nav {
  width: min(1120px, calc(100% - 40px));
  margin: 22px auto 0;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 16px;
  z-index: 20;
  box-shadow: 0 10px 30px rgba(7,24,39,.06);
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 750; letter-spacing: -.02em; }
.brand img { width: 30px; height: 30px; }

.nav-cta {
  text-decoration: none;
  color: white;
  background: var(--navy);
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 650;
}

.hero {
  width: min(1120px, calc(100% - 40px));
  margin: 54px auto 70px;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 32px;
  align-items: center;
}

.eyebrow {
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-size: 12px;
  font-weight: 800;
  margin: 0 0 14px;
}

h1, h2, h3 { color: var(--navy); margin: 0; letter-spacing: -.045em; }

h1 { font-size: clamp(44px, 7vw, 82px); line-height: .95; max-width: 780px; }
h2 { font-size: clamp(30px, 4vw, 50px); line-height: 1.03; }
h3 { font-size: 22px; margin-bottom: 12px; }

.lead {
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.65;
  max-width: 700px;
  margin: 26px 0 0;
}

.hero-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 750;
  text-decoration: none;
  border: 1px solid transparent;
}

.primary { background: var(--blue); color: white; box-shadow: 0 12px 28px rgba(11,95,255,.22); }
.secondary { color: var(--navy); border-color: var(--line); background: white; }

.hero-card {
  background: radial-gradient(circle at 30% 20%, #eff6ff, #ffffff 50%, #e8f9ff);
  border: 1px solid var(--line);
  border-radius: 34px;
  min-height: 440px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 34px;
  box-shadow: 0 30px 80px rgba(7,24,39,.09);
}

.hero-card p { color: var(--muted); font-weight: 650; }

.device {
  width: 245px;
  height: 320px;
  border-radius: 42px;
  background: linear-gradient(160deg, #0d2038, #0a63ff);
  position: relative;
  box-shadow: 0 28px 60px rgba(11,95,255,.26);
  display: grid;
  place-items: center;
}

.screen {
  width: 168px;
  height: 138px;
  background: #f9fbff;
  border-radius: 24px;
  display: grid;
  place-items: center;
  box-shadow: inset 0 0 0 1px #d9e6f5;
}

.value { font-size: 56px; font-weight: 850; color: var(--navy); line-height: 1; }
.unit { color: var(--muted); font-weight: 750; margin-top: -22px; }

.pulse {
  position: absolute;
  bottom: 46px;
  width: 128px;
  height: 5px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto 76px;
}

.section-heading { max-width: 820px; margin-bottom: 26px; }
.section-heading.left { margin-bottom: 0; }

.grid { display: grid; gap: 22px; }
.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 30px;
  box-shadow: 0 12px 36px rgba(7,24,39,.05);
}

.card p, .features p, .timeline span, .contact p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 17px;
}

.dark {
  width: min(1160px, calc(100% - 24px));
  background: var(--navy);
  border-radius: 36px;
  padding: 58px 42px;
  color: white;
}

.dark h2, .dark h3 { color: white; }
.dark .eyebrow { color: var(--cyan); }

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.features div {
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 26px;
  padding: 26px;
  background: rgba(255,255,255,.05);
}

.features span {
  display: inline-flex;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  background: rgba(94,234,212,.13);
  color: var(--cyan);
  font-weight: 850;
  margin-bottom: 22px;
}

.timeline {
  background: white;
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 12px;
}

.timeline div {
  display: grid;
  gap: 6px;
  padding: 22px;
  border-bottom: 1px solid var(--line);
}

.timeline div:last-child { border-bottom: 0; }
.timeline strong { color: var(--navy); font-size: 18px; }

.contact {
  text-align: center;
  padding: 62px 24px;
  background: linear-gradient(135deg, #eaf3ff, #ffffff);
  border: 1px solid var(--line);
  border-radius: 36px;
}

.contact p { max-width: 650px; margin: 18px auto 28px; }

footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto 34px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
  font-size: 14px;
}

@media (max-width: 860px) {
  .hero, .two, .features { grid-template-columns: 1fr; }
  .hero { margin-top: 38px; }
  .hero-card { min-height: 360px; }
  .section-heading.left { margin-bottom: 26px; }
  footer { flex-direction: column; }
}

@media (max-width: 560px) {
  .nav { width: calc(100% - 24px); }
  .hero, .section { width: calc(100% - 24px); }
  .dark { width: calc(100% - 12px); padding: 42px 20px; }
  h1 { font-size: 42px; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
}