:root {
  color-scheme: dark;
  --bg: #101113;
  --surface: #181a1f;
  --surface-strong: #20242b;
  --text: #f3f0e7;
  --muted: #b9b3a5;
  --line: rgba(243, 240, 231, 0.14);
  --ember: #ee6b3a;
  --gold: #f4bc57;
  --mint: #75d1a7;
  --steel: #8fb5d8;
  --ink: #101113;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 12%, rgba(238, 107, 58, 0.16), transparent 28rem),
    radial-gradient(circle at 84% 8%, rgba(117, 209, 167, 0.12), transparent 26rem),
    linear-gradient(145deg, #101113 0%, #15161a 48%, #111418 100%);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(16, 17, 19, 0.82);
  backdrop-filter: blur(18px);
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-size: 18px;
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  width: 18px;
  height: 18px;
  border: 2px solid var(--gold);
  transform: rotate(45deg);
  background: linear-gradient(135deg, var(--ember), var(--gold));
  box-shadow: 0 0 26px rgba(238, 107, 58, 0.45);
}

.nav-links {
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.78fr);
  gap: 56px;
  align-items: center;
  min-height: calc(100svh - 72px);
  padding: 80px clamp(22px, 6vw, 92px) 54px;
}

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

.eyebrow {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 20px;
  font-size: clamp(74px, 12vw, 168px);
  line-height: 0.82;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 5vw, 60px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 660px;
  color: var(--muted);
  font-size: clamp(20px, 2.4vw, 30px);
  line-height: 1.18;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 750;
  text-decoration: none;
}

.button.primary {
  border-color: transparent;
  background: var(--gold);
  color: var(--ink);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.cycle-visual {
  position: relative;
  display: grid;
  place-items: center;
  width: min(100%, 520px);
  aspect-ratio: 1;
  margin: 0 auto;
}

.cycle-visual::before {
  position: absolute;
  inset: 13%;
  content: "";
  border: 1px solid var(--line);
  border-radius: 999px;
  background:
    conic-gradient(
      from 210deg,
      rgba(238, 107, 58, 0.12),
      rgba(244, 188, 87, 0.28),
      rgba(117, 209, 167, 0.18),
      rgba(143, 181, 216, 0.18),
      rgba(238, 107, 58, 0.12)
    );
  box-shadow: inset 0 0 80px rgba(255, 255, 255, 0.04);
}

.visual-node {
  position: absolute;
  display: grid;
  place-items: center;
  width: 108px;
  aspect-ratio: 1;
  border: 1px solid rgba(243, 240, 231, 0.2);
  border-radius: 999px;
  background:
    radial-gradient(circle at 36% 32%, rgba(255, 255, 255, 0.26), transparent 14%),
    radial-gradient(circle at 50% 50%, rgba(244, 188, 87, 0.22), transparent 31%),
    linear-gradient(145deg, rgba(32, 36, 43, 0.96), rgba(24, 26, 31, 0.82));
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.34);
}

.visual-node.coin {
  top: 8%;
  left: 16%;
  border-color: rgba(244, 188, 87, 0.38);
}

.visual-node.block {
  right: 4%;
  top: 40%;
  border-color: rgba(117, 209, 167, 0.34);
  background:
    radial-gradient(circle at 36% 32%, rgba(255, 255, 255, 0.24), transparent 14%),
    radial-gradient(circle at 50% 50%, rgba(117, 209, 167, 0.2), transparent 31%),
    linear-gradient(145deg, rgba(32, 36, 43, 0.96), rgba(24, 26, 31, 0.82));
}

.visual-node.delay {
  bottom: 8%;
  left: 20%;
  border-color: rgba(143, 181, 216, 0.36);
  background:
    radial-gradient(circle at 36% 32%, rgba(255, 255, 255, 0.24), transparent 14%),
    radial-gradient(circle at 50% 50%, rgba(143, 181, 216, 0.2), transparent 31%),
    linear-gradient(145deg, rgba(32, 36, 43, 0.96), rgba(24, 26, 31, 0.82));
}

.pulse-ring {
  position: absolute;
  border: 1px solid rgba(244, 188, 87, 0.28);
  border-radius: 999px;
}

.ring-one {
  inset: 3%;
}

.ring-two {
  inset: 28%;
  border-color: rgba(117, 209, 167, 0.28);
}

.section {
  padding: 86px clamp(22px, 6vw, 92px);
  border-top: 1px solid var(--line);
}

.principles p,
.hybrid-copy p {
  color: var(--muted);
}

.hybrid-section {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
  gap: 52px;
  align-items: center;
}

.hybrid-diagram {
  display: grid;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(145deg, rgba(24, 26, 31, 0.88), rgba(32, 36, 43, 0.7));
}

.comparison-header,
.comparison-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.comparison-header span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.comparison-row span,
.comparison-header span {
  display: grid;
  place-items: center;
  padding: 0 8px;
  text-align: center;
}

.comparison-row span {
  min-height: 88px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 850;
  line-height: 1.12;
}

.comparison-row span:first-child {
  background: rgba(238, 107, 58, 0.16);
  border: 1px solid rgba(238, 107, 58, 0.34);
  color: #ffd7c7;
}

.comparison-row span:last-child {
  background: rgba(117, 209, 167, 0.16);
  border: 1px solid rgba(117, 209, 167, 0.4);
  color: #d8ffed;
}

.diagram-caption {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.hybrid-copy {
  font-size: 19px;
}

.thesis-line {
  padding-left: 18px;
  border-left: 3px solid var(--gold);
  color: var(--text);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.28;
}

.principles-section {
  background: rgba(255, 255, 255, 0.025);
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
  margin-top: 42px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  padding: 28px clamp(22px, 6vw, 92px);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer span:first-child {
  color: var(--text);
  font-weight: 800;
}

@media (max-width: 920px) {
  .hero,
  .hybrid-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 56px;
  }

  .cycle-visual {
    max-width: 440px;
  }

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

@media (max-width: 640px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding: 18px 20px;
  }

  .nav-links {
    width: 100%;
    gap: 14px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    gap: 34px;
    padding-inline: 20px;
  }

  h1 {
    font-size: clamp(68px, 21vw, 112px);
  }

  .section {
    padding: 64px 20px;
  }

  .visual-node {
    width: 82px;
  }

  .comparison-header {
    display: none;
  }

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

  .comparison-row span {
    min-height: 78px;
    padding: 0 6px;
    font-size: 13px;
  }
}