:root {
  --ink-deep: #0a1e33;
  --ink-panel: #0f2c4a;
  --line-white: #eaf3fb;
  --line-dim: rgba(234, 243, 251, 0.58);
  --line-faint: rgba(234, 243, 251, 0.32);
  --grid-line: rgba(234, 243, 251, 0.08);
  --signal-amber: #ffb454;
  --trace-teal: #5ed1c8;
  --status-success: #7fd9a6;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* {
  box-sizing: border-box;
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--ink-deep);
  color: var(--line-white);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  background-size: 40px 40px;
}

a {
  color: inherit;
}

code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  color: var(--trace-teal);
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Nav ---------- */
.nav {
  border-bottom: 1px solid var(--grid-line);
}

.nav__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}

.nav__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav__logo-mark {
  width: 10px;
  height: 10px;
  background: var(--signal-amber);
  border-radius: 1px;
}

.nav__links {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.nav__links a {
  text-decoration: none;
  color: var(--line-dim);
}

.nav__links a:hover,
.nav__links a:focus-visible {
  color: var(--signal-amber);
}

.nav__version {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--line-faint);
  border: 1px solid var(--grid-line);
  padding: 3px 8px;
  border-radius: 3px;
  white-space: nowrap;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 80px 0 56px;
  border-bottom: 1px solid var(--grid-line);
}

.titleblock {
  position: absolute;
  top: 28px;
  right: 28px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--line-faint);
  border: 1px solid var(--grid-line);
  background: rgba(15, 44, 74, 0.5);
  padding: 10px 14px;
  line-height: 1.6;
  display: none;
}

@media (min-width: 900px) {
  .titleblock {
    display: block;
  }
}

.titleblock strong {
  color: var(--line-dim);
  font-weight: 500;
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--trace-teal);
  letter-spacing: 0.08em;
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero__eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--trace-teal);
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.18;
  margin: 0 0 22px;
  max-width: 18ch;
  letter-spacing: -0.01em;
}

.hero h1 em {
  font-style: normal;
  color: var(--signal-amber);
}

.hero__sub {
  font-size: 1.06rem;
  color: var(--line-dim);
  max-width: 58ch;
  margin: 0 0 34px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 56px;
}

.btn {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 13px 24px;
  border-radius: 3px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--signal-amber);
  color: #1a1204;
  font-weight: 500;
}

.btn--ghost {
  border-color: var(--line-faint);
  color: var(--line-white);
}

.btn--ghost:hover {
  border-color: var(--trace-teal);
  color: var(--trace-teal);
}

/* ---------- Pipeline diagram (static) ---------- */
.pipeline {
  border: 1px solid var(--grid-line);
  background: rgba(15, 44, 74, 0.4);
  border-radius: 6px;
  padding: 26px 24px 22px;
  overflow-x: auto;
}

.pipeline__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--line-faint);
  letter-spacing: 0.08em;
  margin: 0 0 22px;
  text-transform: uppercase;
}

.pipeline__track {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  min-width: 640px;
  padding: 0 6px;
}

.pipeline__line {
  position: absolute;
  top: 5px;
  left: 6%;
  right: 6%;
  height: 1px;
  background: var(--line-faint);
  z-index: 0;
}

.pipeline__node {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 108px;
  text-align: center;
}

.pipeline__dot {
  width: 11px;
  height: 11px;
  background: var(--ink-deep);
  border: 2px solid var(--trace-teal);
  border-radius: 50%;
}

.pipeline__node span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--line-dim);
  line-height: 1.4;
}

.pipeline__node small {
  display: block;
  color: var(--line-faint);
  font-size: 0.64rem;
  margin-top: 2px;
}

/* ---------- Section shell ---------- */
section {
  padding: 76px 0;
  border-bottom: 1px solid var(--grid-line);
}

.section__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--trace-teal);
  letter-spacing: 0.08em;
  margin: 0 0 12px;
}

.section__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0 0 16px;
  max-width: 30ch;
}

.section__desc {
  color: var(--line-dim);
  max-width: 64ch;
  margin: 0 0 44px;
}

/* ---------- Spec / Runtime diagram ---------- */
.diagram {
  border: 1px solid var(--grid-line);
  background: rgba(15, 44, 74, 0.35);
  border-radius: 6px;
  padding: 40px 32px;
}

.diagram__spec {
  font-family: var(--font-mono);
  text-align: center;
  margin-bottom: 34px;
}

.diagram__spec-box {
  display: inline-block;
  border: 1px solid var(--signal-amber);
  color: var(--signal-amber);
  padding: 12px 22px;
  border-radius: 4px;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

.diagram__spec-sub {
  display: block;
  font-size: 0.68rem;
  color: var(--line-faint);
  margin-top: 8px;
  letter-spacing: 0.05em;
}

.diagram__branches {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: center;
  position: relative;
}

.diagram__branches::before {
  content: '';
  position: absolute;
  top: -18px;
  left: 50%;
  width: 1px;
  height: 18px;
  background: var(--line-faint);
}

.branch {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 14px 18px;
  border-radius: 4px;
  min-width: 200px;
  text-align: center;
  text-decoration: none;
  display: block;
}

.branch--official {
  border: 1px solid var(--trace-teal);
  color: var(--line-white);
  background: rgba(94, 209, 200, 0.06);
}

.branch--official small {
  color: var(--trace-teal);
}

.branch--official:hover {
  background: rgba(94, 209, 200, 0.12);
}

.branch--future {
  border: 1px dashed var(--line-faint);
  color: var(--line-faint);
}

.branch small {
  display: block;
  margin-top: 6px;
  font-size: 0.66rem;
}

/* ---------- Guarantee cards (parts list) ---------- */
.parts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--grid-line);
  border: 1px solid var(--grid-line);
}

.part {
  background: var(--ink-deep);
  padding: 30px 26px;
}

.part__no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--signal-amber);
  letter-spacing: 0.05em;
  margin-bottom: 14px;
  display: block;
}

.part h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  margin: 0 0 10px;
}

.part p {
  color: var(--line-dim);
  font-size: 0.92rem;
  margin: 0;
}

/* ---------- Code panel ---------- */
.codepanel {
  border: 1px solid var(--grid-line);
  border-radius: 6px;
  overflow: hidden;
  background: #081726;
}

.codepanel__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--ink-panel);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--line-faint);
  border-bottom: 1px solid var(--grid-line);
}

.codepanel pre {
  margin: 0;
  padding: 22px 24px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.7;
  color: #cfe6f5;
}

.tok-key {
  color: var(--trace-teal);
}

.tok-str {
  color: var(--status-success);
}

.tok-com {
  color: var(--line-faint);
}

.tok-amb {
  color: var(--signal-amber);
}

/* ---------- Compliance stamp ---------- */
.compliance {
  display: flex;
  flex-wrap: wrap;
  gap: 44px;
  align-items: center;
}

.stamp {
  flex-shrink: 0;
  width: 132px;
  height: 132px;
  border: 2px solid var(--status-success);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  color: var(--status-success);
  text-align: center;
}

.stamp strong {
  font-size: 0.9rem;
  letter-spacing: 0.03em;
}

.stamp span {
  font-size: 0.6rem;
  margin-top: 4px;
  opacity: 0.85;
}

.compliance__list {
  flex: 1;
  min-width: 260px;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.compliance__list li {
  display: flex;
  gap: 12px;
  color: var(--line-dim);
  font-size: 0.94rem;
}

.compliance__list li::before {
  content: '';
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 6px;
  background: var(--trace-teal);
  border-radius: 1px;
}

.compliance__list strong {
  color: var(--line-white);
  font-weight: 500;
}

/* ---------- Use cases ---------- */
.cases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.case {
  border: 1px solid var(--grid-line);
  border-radius: 6px;
  padding: 26px 24px;
  background: rgba(15, 44, 74, 0.25);
}

.case h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--line-white);
}

.case p {
  color: var(--line-dim);
  font-size: 0.9rem;
  margin: 0;
}

/* ---------- Roadmap timeline ---------- */
.timeline {
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--line-faint);
}

.tl-item {
  position: relative;
  padding-bottom: 32px;
}

.tl-item:last-child {
  padding-bottom: 0;
}

.tl-item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 4px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-deep);
  border: 2px solid var(--signal-amber);
}

.tl-item.is-future::before {
  border-color: var(--line-faint);
}

.tl-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--signal-amber);
  letter-spacing: 0.04em;
}

.tl-item.is-future .tl-tag {
  color: var(--line-faint);
}

.tl-item h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin: 6px 0 6px;
  font-weight: 600;
}

.tl-item p {
  color: var(--line-dim);
  font-size: 0.9rem;
  margin: 0;
  max-width: 58ch;
}

/* ---------- Final CTA ---------- */
.final {
  text-align: center;
  padding: 84px 0 96px;
  border-bottom: none;
}

.final h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  margin: 0 0 18px;
}

.final p {
  color: var(--line-dim);
  margin: 0 0 34px;
}

.final .hero__cta {
  justify-content: center;
  margin-bottom: 0;
}

/* ---------- Footer titleblock ---------- */
footer {
  padding: 32px 0 44px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--line-faint);
}

.footer__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
  align-items: flex-end;
  border-top: 1px solid var(--grid-line);
  padding-top: 24px;
}

.footer__links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer__links a {
  text-decoration: none;
  color: var(--line-faint);
}

.footer__links a:hover {
  color: var(--trace-teal);
}