:root {
  color-scheme: dark;
  --bg: #050b14;
  --bg-soft: #0d1a2d;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-strong: rgba(255, 255, 255, 0.13);
  --text: #f4f9ff;
  --muted: #aec2d8;
  --blue: #72d9ff;
  --violet: #a98bff;
  --green: #74f0bc;
  --pink: #ff8bd1;
  --line: rgba(255, 255, 255, 0.14);
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.38);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 8%, rgba(114, 217, 255, 0.28), transparent 28rem),
    radial-gradient(circle at 82% 18%, rgba(169, 139, 255, 0.22), transparent 32rem),
    linear-gradient(180deg, #061323 0%, var(--bg) 48%, #07111f 100%);
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

.presentation-hero,
main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.presentation-hero {
  min-height: 100vh;
  padding: 28px 0 72px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 76px;
}

.back-link,
.nav-links a,
.button {
  color: var(--text);
  text-decoration: none;
}

.back-link,
.nav-links {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.nav-links a,
.back-link {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.nav-links a:hover,
.back-link:hover {
  color: var(--blue);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 32px;
  align-items: stretch;
}

.hero-copy,
.signal-card,
.section,
.metrics article,
.timeline article,
.module-card,
.roadmap-grid article {
  border: 1px solid var(--line);
  border-radius: 34px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.055));
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: clamp(32px, 6vw, 72px);
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

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

h1,
h2 {
  line-height: 0.92;
  letter-spacing: -0.075em;
}

h1 {
  max-width: 820px;
  margin-bottom: 28px;
  font-size: clamp(4rem, 12vw, 9.5rem);
}

h2 {
  margin-bottom: 24px;
  font-size: clamp(2.6rem, 7vw, 6.5rem);
}

h3 {
  margin-bottom: 12px;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

p,
li {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.lead {
  max-width: 720px;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 900;
}

.button.primary {
  color: #03131d;
  background: linear-gradient(135deg, var(--blue), var(--green));
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.07);
}

.signal-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 520px;
  padding: 34px;
}

.signal-card::before {
  position: absolute;
  inset: 28px 28px auto auto;
  width: 170px;
  height: 170px;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, rgba(116, 240, 188, 0.32), transparent 68%);
}

.pulse {
  position: absolute;
  top: 44px;
  left: 34px;
  width: calc(100% - 68px);
  height: 180px;
  opacity: 0.9;
  background:
    linear-gradient(90deg, transparent 0 8%, var(--blue) 8% 9%, transparent 9% 20%, var(--pink) 20% 21%, transparent 21% 38%, var(--green) 38% 39%, transparent 39% 54%, var(--blue) 54% 55%, transparent 55%),
    linear-gradient(180deg, transparent 49%, rgba(255, 255, 255, 0.28) 50%, transparent 51%);
  clip-path: polygon(0 54%, 10% 54%, 16% 42%, 22% 66%, 30% 32%, 38% 75%, 48% 54%, 60% 54%, 68% 44%, 76% 62%, 86% 54%, 100% 54%, 100% 100%, 0 100%);
}

.signal-card h2 {
  font-size: clamp(2.2rem, 4vw, 4.2rem);
}

.section {
  margin: 28px 0;
  padding: clamp(28px, 5vw, 56px);
}

.intro p {
  max-width: 880px;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 0;
  border: 0;
  background: none;
  box-shadow: none;
}

.metrics article {
  padding: 28px;
}

.metrics strong {
  display: block;
  margin-bottom: 10px;
  font-size: 1.5rem;
  letter-spacing: -0.04em;
}

.metrics span {
  color: var(--muted);
  line-height: 1.55;
}

.section-heading {
  max-width: 920px;
  margin-bottom: 34px;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline article {
  display: grid;
  grid-template-columns: auto 0.42fr 1fr;
  gap: 22px;
  align-items: start;
  padding: 24px;
}

.step,
.icon {
  display: inline-grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 18px;
  color: #061323;
  background: linear-gradient(135deg, var(--blue), var(--green));
  font-weight: 950;
}

.module-grid,
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.module-card,
.roadmap-grid article {
  padding: 28px;
}

.module-card .icon {
  margin-bottom: 42px;
}

.module-card.triage .icon {
  background: linear-gradient(135deg, var(--blue), var(--green));
}

.module-card.documents .icon {
  background: linear-gradient(135deg, var(--violet), var(--blue));
}

.module-card.surgery .icon {
  background: linear-gradient(135deg, var(--pink), var(--violet));
}

.module-card.follow-up .icon {
  background: linear-gradient(135deg, var(--green), #f9f871);
}

@media (max-width: 880px) {
  .topbar,
  .hero-grid,
  .timeline article,
  .metrics,
  .module-grid,
  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: flex-start;
  }

  .nav-links {
    border-radius: 24px;
  }
}

@media (max-width: 620px) {
  .presentation-hero {
    padding-top: 18px;
  }

  .topbar,
  .hero-actions {
    display: grid;
  }

  .hero-copy,
  .signal-card,
  .section {
    border-radius: 24px;
  }

  .signal-card {
    min-height: 420px;
  }
}