:root {
  --color-navy: #1b2b41;
  --color-teal: #338b85;
  --color-teal-soft: #58aba6;
  --color-gold: #b39a6a;
  --color-sand: #f6f2e8;
  --color-cream: #fcfaf5;
  --color-ink: #243244;
  --color-muted: #647286;
  --color-white: #ffffff;
  --color-panel: rgba(255, 255, 255, 0.9);
  --color-line: rgba(27, 43, 65, 0.1);
  --shadow-soft: 0 22px 70px rgba(27, 43, 65, 0.08);
  --shadow-card: 0 18px 40px rgba(27, 43, 65, 0.12);
  --font-serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-white);
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}

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

img {
  display: block;
  max-width: 100%;
}

.container {
  width: min(1320px, calc(100% - 48px));
  margin: 0 auto;
}

.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 80;
  background: transparent;
  backdrop-filter: none;
  border-bottom: 0;
  overflow: visible;
  transition: background-color 160ms ease, backdrop-filter 160ms ease, border-color 160ms ease;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 84px;
  width: min(1320px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  margin-left: 0;
}

.brand-header-logo {
  width: min(282px, 19vw);
  min-width: 212px;
  height: auto;
}

.brand-header-logo-clean {
  filter: none;
}

.site-nav.scrolled {
  background: transparent;
  backdrop-filter: none;
  border-bottom: 0;
}

.nav-actions,
.hero-actions,
.footer-actions,
.runtime-chip-row,
.runtime-metric-row,
.runtime-pill-row,
.signal-legend {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.nav-jump {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(27, 43, 65, 0.14);
  background: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
  font-weight: 700;
  color: rgba(36, 50, 68, 0.76);
  box-shadow: 0 10px 24px rgba(27, 43, 65, 0.04);
}

.nav-jump:hover {
  color: var(--color-navy);
  border-color: rgba(27, 43, 65, 0.22);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 700;
  transition: transform 120ms ease, border-color 120ms ease, background-color 120ms ease;
}

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

.btn-solid {
  background: var(--color-navy);
  color: var(--color-white);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.74);
  color: var(--color-navy);
  border-color: rgba(27, 43, 65, 0.16);
}

.hero-stage {
  position: relative;
  min-height: 100vh;
  overflow: clip;
}

.hero-stage-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  transform: none;
}

.hero-stage-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.68) 0%, rgba(255, 255, 255, 0.34) 26%, rgba(255, 255, 255, 0.08) 52%, rgba(255, 255, 255, 0) 74%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.02) 22%, rgba(255, 255, 255, 0.12) 100%);
}

.hero-stage-inner {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 104px 0 28px;
}

.hero-panel {
  width: min(620px, 100%);
  padding: 0;
}

.hero-panel-minimal {
  max-width: 420px;
  margin-left: 0;
  margin-top: -8px;
}

.eyebrow {
  margin: 0 0 6px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-teal);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--color-navy);
}

h1 {
  font-size: clamp(2.7rem, 4.8vw, 4.6rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
  max-width: 8.5ch;
}

h2 {
  font-size: clamp(2rem, 3.1vw, 3.4rem);
  line-height: 1.04;
}

h3 {
  font-size: 1.38rem;
}

.hero-body,
.section-copy p,
.runtime-copy,
.featured-block p,
.demo-note,
.site-footer p {
  color: var(--color-muted);
}

.hero-body {
  margin: 8px 0 0;
  max-width: 22ch;
  font-size: 0.98rem;
}

.hero-actions {
  margin-top: 18px;
}

.how-section,
.proof-section {
  background: var(--color-white);
}

.how-section {
  padding: 84px 0 72px;
  border-top: 1px solid rgba(27, 43, 65, 0.06);
}

.how-inner {
  display: grid;
  gap: 28px;
}

.how-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.how-card,
.proof-card {
  border-radius: 26px;
  border: 1px solid rgba(27, 43, 65, 0.08);
  background: linear-gradient(180deg, rgba(252, 250, 245, 0.96) 0%, rgba(255, 255, 255, 0.98) 100%);
  box-shadow: var(--shadow-soft);
}

.how-card {
  min-height: 220px;
  padding: 24px;
}

.how-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  background: rgba(51, 139, 133, 0.12);
  color: var(--color-teal);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.how-card h3 {
  margin-top: 18px;
  font-size: 1.44rem;
}

.how-card p {
  margin: 12px 0 0;
  color: var(--color-muted);
}

.proof-section {
  padding: 0 0 72px;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.proof-card {
  min-height: 112px;
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}

.proof-card strong {
  color: var(--color-navy);
  font-family: var(--font-serif);
  font-size: 1.7rem;
}

.proof-card span {
  color: var(--color-muted);
  font-size: 0.92rem;
}

.arc-band,
.live-section {
  padding: 84px 0;
}

.arc-band {
  background: var(--color-white);
  border-top: 1px solid rgba(27, 43, 65, 0.06);
}

.arc-band-inner {
  display: grid;
  gap: 28px;
}

.section-copy {
  max-width: 760px;
}

.section-copy-tight {
  max-width: 620px;
}

.section-copy p {
  margin: 14px 0 0;
  font-size: 1.02rem;
}

.arc-storyboard {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1.24fr) minmax(0, 0.92fr);
  gap: 18px;
  align-items: center;
}

.arc-stage-card,
.arc-engine-card,
.arc-meta-card {
  border-radius: 28px;
  border: 1px solid rgba(27, 43, 65, 0.08);
  background: linear-gradient(180deg, rgba(252, 250, 245, 0.96) 0%, rgba(255, 255, 255, 0.98) 100%);
  box-shadow: var(--shadow-soft);
}

.arc-stage-card,
.arc-engine-card {
  min-height: 242px;
  padding: 24px 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: center;
}

.arc-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(51, 139, 133, 0.12);
  color: var(--color-teal);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.arc-stage-card h3,
.arc-engine-card h3 {
  font-size: 1.42rem;
}

.arc-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.arc-mini-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 0 11px;
  border-radius: 999px;
  background: rgba(27, 43, 65, 0.05);
  color: var(--color-muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.arc-stage-card p,
.arc-engine-card p {
  margin: 0;
  color: var(--color-muted);
}

.arc-engine-card {
  position: relative;
}

.arc-engine-card::before,
.arc-engine-card::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, rgba(51, 139, 133, 0.28), rgba(27, 43, 65, 0.14));
}

.arc-engine-card::before { left: -28px; }
.arc-engine-card::after { right: -28px; }

.arc-signal-shell {
  margin-top: 2px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(27, 43, 65, 0.06);
  padding: 14px 12px 10px;
}

.arc-signal-svg {
  display: block;
  width: 100%;
  height: auto;
}

.arc-svg-label,
.arc-svg-sub {
  fill: var(--color-muted);
  font-family: var(--font-sans);
  font-weight: 700;
}

.arc-svg-label {
  font-size: 15px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.arc-svg-sub {
  font-size: 14px;
}

.arc-meta-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.arc-meta-card {
  min-height: 96px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.arc-meta-card strong {
  color: var(--color-navy);
  font-size: 1.22rem;
  font-weight: 800;
}

.arc-meta-card span {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.live-section {
  background: linear-gradient(180deg, var(--color-sand) 0%, #faf7ef 100%);
}

.live-section-head {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.demo-note {
  max-width: 300px;
  margin: 0;
  font-size: 0.82rem;
}

.live-showcase-grid {
  display: grid;
  grid-template-columns: minmax(360px, 0.82fr) minmax(0, 1.18fr);
  gap: 20px;
  align-items: start;
}

.live-runtime-card,
.featured-live-card {
  border-radius: 28px;
  border: 1px solid rgba(27, 43, 65, 0.08);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-soft);
}

.live-runtime-card {
  padding: 24px;
}

.featured-live-card {
  position: sticky;
  top: 104px;
  padding: 24px;
}

.live-runtime-head,
.featured-live-head,
.runtime-session-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.runtime-badge,
.featured-live-meta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid rgba(27, 43, 65, 0.08);
}

.runtime-badge {
  background: rgba(255, 255, 255, 0.88);
  color: var(--color-muted);
}

.runtime-badge.live {
  background: rgba(51, 139, 133, 0.12);
  color: var(--color-teal);
}

.runtime-badge.waiting {
  background: rgba(179, 154, 106, 0.12);
  color: #8a7042;
}

.featured-live-meta {
  background: rgba(51, 139, 133, 0.09);
  color: var(--color-navy);
}

.runtime-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.runtime-summary article,
.biomarker-tile,
.featured-block,
.runtime-session,
.signal-shell {
  border-radius: 20px;
  border: 1px solid rgba(27, 43, 65, 0.08);
  background: rgba(255, 255, 255, 0.94);
}

.runtime-summary article {
  padding: 16px;
}

.runtime-summary span,
.biomarker-tile span,
.block-label,
.runtime-metric span {
  display: block;
  color: var(--color-muted);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.runtime-summary strong,
.biomarker-tile strong,
.runtime-metric strong {
  display: block;
  margin-top: 6px;
  color: var(--color-navy);
}

.runtime-summary strong,
.biomarker-tile strong {
  font-family: var(--font-serif);
  font-size: 1.18rem;
}

.runtime-session-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
  max-height: 72vh;
  overflow-y: auto;
  padding-right: 4px;
}

.runtime-session {
  padding: 16px;
  box-shadow: 0 10px 24px rgba(27, 43, 65, 0.06);
}

.runtime-session.empty {
  text-align: center;
}

.runtime-session strong {
  display: block;
  color: var(--color-navy);
}

.runtime-session small {
  display: block;
  margin-top: 4px;
  color: var(--color-muted);
}

.runtime-chip,
.runtime-pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(27, 43, 65, 0.08);
  background: var(--color-cream);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--color-navy);
}

.runtime-pill.subtle {
  background: rgba(51, 139, 133, 0.08);
  border-color: rgba(51, 139, 133, 0.14);
  color: var(--color-teal);
}

.runtime-chip.status {
  background: rgba(51, 139, 133, 0.08);
  color: var(--color-teal);
}

.runtime-metric-row,
.runtime-pill-row {
  margin-top: 12px;
}

.runtime-metric {
  min-width: 88px;
  padding: 10px 12px;
}

.runtime-copy {
  margin: 12px 0 0;
  font-size: 0.94rem;
}

.runtime-copy.followup {
  color: var(--color-ink);
}

.featured-live-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(280px, 0.88fr);
  gap: 16px;
  margin-top: 18px;
}

.featured-signal-panel {
  display: grid;
  align-content: start;
}

.featured-signal-chart {
  min-height: 312px;
}

.featured-side-panel {
  display: grid;
  gap: 14px;
}

.featured-biomarkers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.biomarker-tile {
  padding: 16px;
  min-height: 88px;
}

.featured-block {
  padding: 16px;
}

.featured-model-block {
  background: linear-gradient(180deg, rgba(51, 139, 133, 0.06), rgba(255, 255, 255, 0.96));
}

.model-summary-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.model-summary-tile {
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(27, 43, 65, 0.08);
  background: rgba(255, 255, 255, 0.88);
}

.model-summary-tile span {
  display: block;
  color: var(--color-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.model-summary-tile strong {
  display: block;
  margin-top: 6px;
  color: var(--color-navy);
  font-family: var(--font-serif);
  font-size: 1.02rem;
}

.featured-block p {
  margin: 10px 0 0;
}

.featured-block .runtime-pill-row,
.featured-block .driver-pills {
  margin-top: 12px;
}

.featured-model-block .runtime-pill-row {
  gap: 7px;
}

.signal-shell {
  padding: 12px 14px 14px;
}

.signal-shell svg {
  display: block;
  width: 100%;
  height: auto;
}

.signal-legend {
  margin-top: 12px;
}

.signal-legend span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.signal-legend i {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 999px;
}

.signal-note {
  margin-top: 12px;
  color: var(--color-muted);
  font-size: 0.84rem;
}

.driver-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.site-footer {
  padding: 36px 0;
  border-top: 1px solid rgba(27, 43, 65, 0.08);
  background: var(--color-white);
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-logo {
  width: min(248px, 42vw);
}

.site-footer p {
  margin: 12px 0 0;
}

@media (max-width: 1120px) {
  .live-showcase-grid,
  .featured-live-grid,
  .live-section-head {
    grid-template-columns: 1fr;
  }

  .how-grid,
  .arc-storyboard,
  .arc-meta-strip,
  .proof-grid {
    grid-template-columns: 1fr;
  }

  .featured-live-card {
    position: static;
  }
}

@media (max-width: 860px) {
  .nav-inner,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-actions {
    width: 100%;
    margin-top: 28px;
  }

  .brand-header-logo {
    width: min(248px, 54vw);
    min-width: 188px;
  }

  .hero-stage-inner {
    align-items: flex-end;
    padding-top: 92px;
  }

  .hero-stage-image {
    object-position: center center;
  }

  h1 {
    font-size: clamp(2.3rem, 12vw, 3.6rem);
  }

  .runtime-summary,
  .featured-biomarkers {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 24px, 1320px);
  }

  .hero-stage {
    min-height: 92vh;
  }

  .site-nav {
    background: transparent;
  }

  .hero-stage-scrim {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.28) 0%, rgba(255, 255, 255, 0.12) 32%, rgba(255, 255, 255, 0.84) 100%),
      linear-gradient(90deg, rgba(255, 255, 255, 0.82) 0%, rgba(255, 255, 255, 0.18) 100%);
  }

  .live-runtime-card,
  .featured-live-card {
    border-radius: 22px;
  }

  .brand-header-logo {
    width: min(224px, 74vw);
  }
}