:root {
  --bg: #08111d;
  --bg-alt: #0e1b2f;
  --panel: rgba(8, 17, 29, 0.62);
  --panel-strong: rgba(11, 24, 41, 0.88);
  --line: rgba(157, 196, 255, 0.18);
  --text: #f4f7fb;
  --muted: #a7bbd7;
  --accent: #62e4bf;
  --accent-deep: #1aa07b;
  --warm: #ffc277;
  --shadow: 0 30px 120px rgba(0, 0, 0, 0.38);
  --max-width: 1180px;
  --header-height: 84px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 15%, rgba(98, 228, 191, 0.16), transparent 24%),
    radial-gradient(circle at 84% 18%, rgba(255, 194, 119, 0.16), transparent 26%),
    linear-gradient(180deg, #07101b 0%, #08111d 48%, #0d1728 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 90%);
  opacity: 0.2;
}

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

code {
  font-family: inherit;
  color: var(--warm);
}

.page-shell {
  position: relative;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: var(--header-height);
  padding: 0 2rem;
  backdrop-filter: blur(18px);
  background: rgba(4, 10, 18, 0.58);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand-mark {
  width: 1rem;
  height: 1rem;
  border-radius: 999px;
  background:
    radial-gradient(circle at 30% 30%, #dcfff4, transparent 36%),
    linear-gradient(135deg, var(--accent) 0%, #4e87ff 100%);
  box-shadow: 0 0 28px rgba(98, 228, 191, 0.55);
}

.site-nav {
  display: inline-flex;
  gap: 1.4rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.hero,
.section,
.metrics {
  width: min(calc(100% - 2.5rem), var(--max-width));
  margin: 0 auto;
}

.hero {
  min-height: calc(100svh - var(--header-height));
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  align-items: center;
  gap: 3rem;
  padding: 4.5rem 0 3rem;
}

.eyebrow,
.metric-kicker,
.signal-label {
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--accent);
}

.hero h1,
.section h2,
.deploy-panel h2 {
  margin: 0;
  line-height: 0.92;
  letter-spacing: -0.04em;
}

.hero h1 {
  max-width: 10ch;
  font-size: clamp(3.5rem, 8vw, 7.2rem);
}

.hero h1::after {
  content: " backend-authoritative.";
  color: var(--warm);
  font-family: "Instrument Serif", serif;
  font-style: italic;
}

.hero-text,
.section p,
.deploy-panel p,
.metrics p,
.outcome-card p,
.flow-grid p,
.control-columns p,
.signal-meta {
  color: var(--muted);
  line-height: 1.7;
  font-size: 1rem;
}

.hero-text {
  max-width: 40rem;
  margin: 1.5rem 0 0;
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.3rem;
  padding: 0 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  color: #06201a;
  background: linear-gradient(135deg, #8cf3d6 0%, #62e4bf 42%, #ffc277 100%);
  box-shadow: 0 18px 48px rgba(98, 228, 191, 0.24);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.hero-visual {
  position: relative;
  display: grid;
  gap: 1.4rem;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: -8% 6% auto auto;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(98, 228, 191, 0.28), transparent 68%);
  filter: blur(20px);
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 8% -4% 10% 12%;
  border-radius: 2rem;
  border: 1px solid rgba(157, 196, 255, 0.08);
  background:
    repeating-linear-gradient(
      180deg,
      rgba(98, 228, 191, 0.07) 0,
      rgba(98, 228, 191, 0.07) 1px,
      transparent 1px,
      transparent 18px
    );
  opacity: 0.55;
  pointer-events: none;
}

.signal-card,
.signal-step,
.outcome-card,
.deploy-panel,
.flow-grid article,
.control-columns article {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.signal-card-primary {
  padding: 1.5rem;
  border-radius: 1.75rem;
}

.signal-card-primary::after,
.signal-step::after,
.outcome-card::after,
.deploy-panel::after,
.flow-grid article::after,
.control-columns article::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), transparent 42%);
  pointer-events: none;
}

.signal-value {
  margin: 0.2rem 0 0.5rem;
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.05em;
}

.signal-rail {
  display: grid;
  gap: 1rem;
}

.signal-step {
  display: grid;
  gap: 0.35rem;
  padding: 1.1rem 1.2rem;
  border-radius: 1.25rem;
}

.signal-step span,
.flow-grid span {
  font-size: 0.8rem;
  color: var(--warm);
  letter-spacing: 0.12em;
}

.signal-step strong,
.flow-grid h3,
.control-columns h3,
.outcome-card h3 {
  font-size: 1.1rem;
  line-height: 1.15;
}

.signal-step small {
  color: var(--muted);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 1rem 0 5rem;
}

.metrics > div {
  padding: 1rem 0.25rem;
}

.metrics strong {
  display: block;
  margin-bottom: 0.7rem;
  font-size: 1.2rem;
}

.section {
  padding: 3rem 0 5rem;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 2rem;
  align-items: start;
}

.section h2,
.deploy-panel h2 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  max-width: 12ch;
}

.section-title-wide {
  max-width: 22ch !important;
}

.section-copy p:last-child {
  max-width: 34rem;
}

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

.flow-grid article,
.control-columns article,
.control-grid article,
.outcome-card {
  border-radius: 1.5rem;
  padding: 1.3rem;
}

.band {
  position: relative;
}

.lightweight-section {
  padding-top: 0;
}

.band::before {
  content: "";
  position: absolute;
  inset: 2rem -2rem;
  border-radius: 2.5rem;
  background: linear-gradient(135deg, rgba(14, 27, 47, 0.72), rgba(7, 16, 27, 0.35));
  border: 1px solid rgba(255, 255, 255, 0.04);
  z-index: -1;
}

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

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

.outcomes-section .section-copy {
  margin-bottom: 1.5rem;
}

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

.outcome-card h3 {
  margin-top: 0;
}

.whitepaper {
  width: min(calc(100% - 2.5rem), 1080px);
  margin: 0 auto;
  padding: 2rem 0 6rem;
}

.whitepaper-hero {
  padding: 4rem 0 3rem;
}

.whitepaper-hero h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(3rem, 7vw, 6rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.whitepaper-hero h1::after {
  content: " in one page.";
  color: var(--warm);
  font-family: "Instrument Serif", serif;
  font-style: italic;
}

.whitepaper-lead {
  max-width: 48rem;
  margin-top: 1.5rem;
  color: var(--muted);
  line-height: 1.8;
  font-size: 1.08rem;
}

.whitepaper-section {
  padding: 2rem 0 2.5rem;
}

.whitepaper-intro,
.whitepaper-copy {
  max-width: 52rem;
}

.whitepaper-intro h2,
.whitepaper-copy h2 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.whitepaper-intro p,
.whitepaper-copy p,
.whitepaper-highlights p,
.paper-card p {
  color: var(--muted);
  line-height: 1.8;
}

.whitepaper-highlights,
.whitepaper-columns,
.paper-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.whitepaper-highlights,
.whitepaper-columns {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.whitepaper-highlights article,
.paper-card {
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  padding: 1.35rem;
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.whitepaper-highlights h3,
.paper-card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.15rem;
}

.paper-card span {
  display: inline-block;
  margin-bottom: 0.8rem;
  color: var(--warm);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.deploy-panel {
  border-radius: 2rem;
  padding: 2rem;
  background:
    radial-gradient(circle at 90% 18%, rgba(98, 228, 191, 0.16), transparent 22%),
    var(--panel-strong);
}

.deploy-panel p {
  max-width: 48rem;
}

.deploy-code {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.deploy-code span {
  color: var(--muted);
}

.deploy-code strong {
  font-size: 1.15rem;
}

.site-footer {
  width: 100%;
  margin: 0;
  padding: 1.5rem 2rem 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(4, 10, 18, 0.42);
  backdrop-filter: blur(18px);
}

.footer-inner {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}

.footer-copy {
  max-width: 34rem;
}

.footer-copy p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.25rem;
  color: var(--muted);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text);
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .site-header {
    padding: 0 1rem;
  }

  .hero,
  .section,
  .metrics {
    width: min(calc(100% - 1.5rem), var(--max-width));
  }

  .hero,
  .split-section,
  .metrics,
  .control-columns,
  .control-grid,
  .outcome-grid,
  .whitepaper-highlights,
  .whitepaper-columns,
  .paper-grid {
    grid-template-columns: 1fr;
  }

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

  .hero {
    padding-top: 3rem;
  }

  .hero h1 {
    max-width: 11ch;
  }

  .section h2,
  .deploy-panel h2 {
    max-width: 14ch;
  }

  .section-title-wide {
    max-width: 100% !important;
  }

  .whitepaper {
    width: min(calc(100% - 1.5rem), 1080px);
  }

  .site-footer {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .site-header {
    height: auto;
    padding-top: 1rem;
    padding-bottom: 1rem;
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 0.8rem 1rem;
  }

  .hero {
    min-height: auto;
    padding-top: 2rem;
  }

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

  .button {
    width: 100%;
  }

  .section-title-wide {
    max-width: 100% !important;
  }

  .deploy-panel,
  .signal-card-primary,
  .flow-grid article,
  .control-columns article,
  .outcome-card {
    border-radius: 1.2rem;
  }
}