:root {
  --bg: #07110f;
  --bg-deep: #040a09;
  --surface: #0b1714;
  --surface-raised: #10201c;
  --surface-soft: #132720;
  --line: rgba(168, 224, 199, 0.14);
  --line-strong: rgba(168, 224, 199, 0.28);
  --text: #edf8f2;
  --muted: #a7bdb3;
  --faint: #748b81;
  --mint: #6ff0b5;
  --mint-strong: #35d897;
  --teal: #3ecfc1;
  --blue: #76a9ff;
  --amber: #e8c875;
  --danger: #ff8f83;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.35);
  --radius: 22px;
  --radius-sm: 14px;
  --shell: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 2%, rgba(53, 216, 151, 0.08), transparent 32rem),
    linear-gradient(180deg, var(--bg-deep), var(--bg) 18%, var(--bg));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button,
input {
  font: inherit;
}

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

p:last-child {
  margin-bottom: 0;
}

.shell {
  width: min(calc(100% - 40px), var(--shell));
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: #03100b;
  background: var(--mint);
  border-radius: 8px;
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  border-bottom: 1px solid transparent;
  transition: background 180ms ease, border-color 180ms ease, backdrop-filter 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(4, 10, 9, 0.82);
  border-color: var(--line);
  backdrop-filter: blur(18px);
}

.nav-shell {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand-mark {
  width: 38px;
  height: 38px;
  fill: none;
  stroke: var(--mint);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 10px rgba(111, 240, 181, 0.22));
}

.brand-copy {
  display: grid;
  line-height: 1.05;
}

.brand-copy strong {
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.brand-copy small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin-left: auto;
}

.site-nav a,
.footer-links a {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 650;
  transition: color 150ms ease;
}

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

.nav-cta {
  padding: 10px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 750;
  transition: border-color 150ms ease, background 150ms ease, transform 150ms ease;
}

.nav-cta:hover,
.nav-cta:focus-visible {
  background: rgba(111, 240, 181, 0.08);
  border-color: rgba(111, 240, 181, 0.48);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  margin-left: auto;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  background: var(--surface);
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 100%;
  height: 2px;
  margin: 4px 0;
  background: currentColor;
  border-radius: 2px;
  transition: transform 160ms ease, opacity 160ms ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 158px 0 54px;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(130, 200, 169, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130, 200, 169, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black, transparent 84%);
}

.hero-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.18;
  pointer-events: none;
}

.hero-glow-one {
  top: -220px;
  right: 4%;
  background: var(--mint-strong);
}

.hero-glow-two {
  bottom: -320px;
  left: 20%;
  background: var(--blue);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(420px, 0.96fr);
  align-items: center;
  gap: 64px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 20px;
  color: var(--mint);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.signal-dot {
  position: relative;
  width: 8px;
  height: 8px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 18px var(--mint);
}

.signal-dot::after {
  content: "";
  position: absolute;
  inset: -5px;
  border: 1px solid rgba(111, 240, 181, 0.55);
  border-radius: 50%;
  animation: signal 2.2s ease-out infinite;
}

@keyframes signal {
  0% { opacity: 1; transform: scale(0.5); }
  70%, 100% { opacity: 0; transform: scale(1.45); }
}

.hero h1 {
  max-width: 720px;
  margin-bottom: 25px;
  font-size: clamp(3.3rem, 6.2vw, 6.4rem);
  line-height: 0.98;
  letter-spacing: -0.067em;
  text-wrap: balance;
}

.hero-lede {
  max-width: 660px;
  margin-bottom: 31px;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.55vw, 1.24rem);
  line-height: 1.72;
}

.hero-actions,
.access-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 780;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

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

.button-primary {
  color: #04100b;
  background: linear-gradient(135deg, var(--mint), var(--mint-strong));
  border-color: transparent;
  box-shadow: 0 14px 38px rgba(53, 216, 151, 0.18);
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 18px 46px rgba(53, 216, 151, 0.27);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.025);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: rgba(111, 240, 181, 0.07);
  border-color: rgba(111, 240, 181, 0.42);
}

.microcopy {
  margin-top: 17px;
  color: var(--faint);
  font-size: 0.78rem;
}

.continuity-console {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(5, 13, 11, 0.82);
  box-shadow: var(--shadow), inset 0 1px rgba(255, 255, 255, 0.04);
  transform: perspective(1000px) rotateY(-2deg) rotateX(1deg);
}

.continuity-console::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(111, 240, 181, 0.07), transparent 38%);
}

.console-bar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 47px;
  padding: 0 16px;
  color: var(--faint);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.68rem;
}

.console-dots {
  display: flex;
  gap: 5px;
}

.console-dots span {
  width: 7px;
  height: 7px;
  background: var(--line-strong);
  border-radius: 50%;
}

.console-dots span:first-child {
  background: var(--mint);
}

.console-state {
  justify-self: end;
  color: var(--mint);
}

.console-body {
  position: relative;
  z-index: 1;
  padding: 25px;
}

.console-command {
  margin-bottom: 21px;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.77rem;
}

.console-command span {
  margin-right: 9px;
  color: var(--mint);
}

.console-row {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: start;
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.console-row strong,
.console-result strong {
  display: block;
  font-size: 0.82rem;
}

.console-row small,
.console-result small {
  display: block;
  margin-top: 4px;
  color: var(--faint);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.63rem;
  line-height: 1.5;
}

.console-check {
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  color: var(--mint);
  border: 1px solid rgba(111, 240, 181, 0.25);
  border-radius: 7px;
  background: rgba(111, 240, 181, 0.06);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.6rem;
}

.row-state {
  padding: 4px 7px;
  color: var(--mint);
  background: rgba(111, 240, 181, 0.06);
  border-radius: 6px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.58rem;
  text-transform: uppercase;
}

.console-divider {
  height: 1px;
  margin: 4px 0 20px;
  background: linear-gradient(90deg, var(--mint), transparent);
}

.console-result {
  display: flex;
  align-items: center;
  gap: 14px;
}

.pulse-ring {
  position: relative;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  border: 1px solid var(--mint);
  border-radius: 50%;
}

.pulse-ring::before {
  content: "";
  position: absolute;
  inset: 7px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 16px rgba(111, 240, 181, 0.7);
}

.proof-strip {
  position: relative;
  display: flex;
  align-items: center;
  gap: 32px;
  margin-top: 70px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.proof-label {
  flex: 0 0 auto;
  color: var(--faint);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.proof-strip ol {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  width: 100%;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.proof-strip li {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 0.73rem;
  font-weight: 650;
}

.proof-strip li span {
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  color: var(--mint);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-size: 0.6rem;
}

.section {
  position: relative;
  padding: 118px 0;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 52px;
}

.section-heading-wide {
  max-width: 880px;
}

.section-heading h2,
.sticky-copy h2,
.access-card h2 {
  margin-bottom: 22px;
  font-size: clamp(2.25rem, 4.7vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.section-heading p,
.sticky-copy > p,
.access-card p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.problem-section {
  background: linear-gradient(180deg, rgba(255,255,255,0.012), transparent);
}

.three-grid,
.four-grid {
  display: grid;
  gap: 16px;
}

.three-grid {
  grid-template-columns: repeat(3, 1fr);
}

.four-grid {
  grid-template-columns: repeat(4, 1fr);
}

.problem-card,
.component-card,
.pack-card,
.trust-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(255,255,255,0.032), rgba(255,255,255,0.008));
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.problem-card:hover,
.component-card:hover,
.pack-card:hover,
.trust-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: linear-gradient(150deg, rgba(111,240,181,0.055), rgba(255,255,255,0.01));
}

.problem-card {
  min-height: 250px;
  padding: 30px;
}

.problem-card::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -90px;
  width: 180px;
  height: 180px;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.card-index,
.trust-number {
  display: block;
  margin-bottom: 58px;
  color: var(--mint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
}

.problem-card h3,
.component-card h3,
.pack-card h3,
.trust-card h3,
.volume-layer h3,
.upkeep-list h3,
.method-track h3 {
  margin-bottom: 10px;
  font-size: 1.16rem;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.problem-card p,
.component-card p,
.pack-card p,
.trust-card p,
.volume-layer p,
.upkeep-list p,
.method-track p {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.72;
}

.system-section {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 80% 30%, rgba(62,207,193,0.07), transparent 34rem),
    var(--bg-deep);
}

.system-map {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 70px 1.15fr 70px 1fr;
  align-items: center;
  margin: 70px 0;
}

.system-node {
  position: relative;
  z-index: 2;
  min-height: 186px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 23, 20, 0.92);
  box-shadow: 0 18px 50px rgba(0,0,0,0.2);
}

.system-node strong {
  display: block;
  margin: 14px 0 10px;
  font-size: 1.25rem;
}

.system-node small {
  color: var(--muted);
  line-height: 1.6;
}

.node-engine {
  border-color: rgba(111, 240, 181, 0.42);
  box-shadow: 0 24px 70px rgba(53, 216, 151, 0.08);
}

.node-kicker,
.meta,
.pack-label {
  color: var(--mint);
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.flow-arrow {
  position: relative;
  height: 1px;
  background: var(--line-strong);
}

.flow-arrow::after {
  content: "";
  position: absolute;
  top: -4px;
  right: 0;
  width: 8px;
  height: 8px;
  border-top: 1px solid var(--mint);
  border-right: 1px solid var(--mint);
  transform: rotate(45deg);
}

.flow-arrow span {
  position: absolute;
  top: -2px;
  left: 5%;
  width: 5px;
  height: 5px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--mint);
  animation: flow 2.6s linear infinite;
}

@keyframes flow {
  from { left: 5%; opacity: 0; }
  15%, 85% { opacity: 1; }
  to { left: 88%; opacity: 0; }
}

.integrity-loop {
  position: absolute;
  z-index: 1;
  right: 7%;
  bottom: -38px;
  left: 32%;
  height: 88px;
  border: 1px dashed rgba(111, 240, 181, 0.35);
  border-top: 0;
  border-radius: 0 0 40px 40px;
}

.integrity-loop::before {
  content: "";
  position: absolute;
  top: -4px;
  left: -4px;
  width: 8px;
  height: 8px;
  border-bottom: 1px solid var(--mint);
  border-left: 1px solid var(--mint);
  transform: rotate(45deg);
}

.integrity-loop span {
  position: absolute;
  bottom: -11px;
  left: 50%;
  padding: 1px 10px;
  color: var(--mint);
  background: var(--bg-deep);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.6rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.component-grid {
  margin-top: 112px;
}

.component-card {
  min-height: 330px;
  padding: 28px;
}

.component-icon {
  position: relative;
  width: 45px;
  height: 45px;
  margin-bottom: 48px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(111, 240, 181, 0.04);
}

.component-icon::before,
.component-icon::after {
  content: "";
  position: absolute;
}

.icon-engine::before {
  inset: 9px;
  border: 1px solid var(--mint);
  border-radius: 50%;
}

.icon-engine::after {
  top: 21px;
  left: 6px;
  width: 31px;
  height: 1px;
  background: var(--mint);
  box-shadow: 0 -7px rgba(111,240,181,0.45), 0 7px rgba(111,240,181,0.45);
}

.icon-volume::before {
  top: 10px;
  right: 9px;
  bottom: 10px;
  left: 9px;
  border: 1px solid var(--mint);
  transform: skewY(-8deg);
}

.icon-volume::after {
  top: 15px;
  left: 14px;
  width: 16px;
  height: 1px;
  background: var(--mint);
  box-shadow: 0 6px var(--mint), 0 12px rgba(111,240,181,0.5);
}

.icon-skill::before {
  inset: 10px;
  border: 1px solid var(--mint);
  border-radius: 4px;
  transform: rotate(45deg);
}

.icon-skill::after {
  top: 21px;
  left: 7px;
  width: 29px;
  height: 1px;
  background: var(--mint);
}

.icon-event::before {
  top: 7px;
  left: 21px;
  width: 1px;
  height: 29px;
  background: var(--mint);
}

.icon-event::after {
  top: 21px;
  left: 7px;
  width: 29px;
  height: 1px;
  background: var(--mint);
  box-shadow: 0 0 12px var(--mint);
}

.component-card .meta {
  display: block;
  margin-bottom: 12px;
}

.volumes-section {
  background:
    linear-gradient(90deg, transparent 49.95%, var(--line) 50%, transparent 50.05%),
    radial-gradient(circle at 70% 50%, rgba(118,169,255,0.055), transparent 38rem);
}

.split-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: start;
  gap: 100px;
}

.sticky-copy {
  position: sticky;
  top: 125px;
}

.ownership-note {
  margin-top: 36px;
  padding: 20px;
  border: 1px solid rgba(111, 240, 181, 0.24);
  border-radius: var(--radius-sm);
  background: rgba(111, 240, 181, 0.04);
}

.ownership-note strong,
.ownership-note span {
  display: block;
}

.ownership-note strong {
  margin-bottom: 7px;
  font-size: 0.86rem;
}

.ownership-note span {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

.volume-stack {
  display: grid;
  gap: 14px;
  counter-reset: volume;
}

.volume-layer {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 22px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 23, 20, 0.78);
  transition: border-color 180ms ease, transform 180ms ease;
}

.volume-layer:hover {
  border-color: var(--line-strong);
  transform: translateX(5px);
}

.layer-number {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--mint);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
}

.volume-layer .meta {
  display: block;
  margin-bottom: 9px;
}

.volume-layer h3 {
  font-size: 1.23rem;
}

.method-section {
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-deep);
}

.method-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.method-track article {
  position: relative;
  min-height: 255px;
  padding: 25px;
  border-right: 1px solid var(--line);
}

.method-track article:last-child {
  border-right: 0;
}

.method-track article::after {
  content: "";
  position: absolute;
  top: 47px;
  right: -5px;
  z-index: 2;
  width: 9px;
  height: 9px;
  border-top: 1px solid var(--mint);
  border-right: 1px solid var(--mint);
  background: var(--surface);
  transform: rotate(45deg);
}

.method-track article:last-child::after {
  display: none;
}

.method-track span {
  display: block;
  margin-bottom: 61px;
  color: var(--mint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
}

.upkeep-section {
  overflow: hidden;
}

.upkeep-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: -20%;
  width: 70%;
  height: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(53,216,151,0.07), transparent 67%);
}

.upkeep-layout {
  display: grid;
  grid-template-columns: minmax(410px, 0.94fr) 1.06fr;
  align-items: center;
  gap: 90px;
  margin: 80px 0 90px;
}

.cycle-visual {
  position: relative;
  width: min(100%, 520px);
  aspect-ratio: 1;
  margin-inline: auto;
  border: 1px solid var(--line);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(111,240,181,0.09) 0 19%, transparent 20% 42%, rgba(111,240,181,0.045) 43% 44%, transparent 45%),
    rgba(5,13,11,0.65);
  box-shadow: inset 0 0 90px rgba(0,0,0,0.4);
}

.cycle-visual::before,
.cycle-visual::after {
  content: "";
  position: absolute;
  inset: 9%;
  border: 1px dashed rgba(111,240,181,0.24);
  border-radius: 50%;
  animation: rotate 34s linear infinite;
}

.cycle-visual::after {
  inset: 29%;
  border-style: solid;
  border-color: rgba(111,240,181,0.14);
  animation-direction: reverse;
  animation-duration: 22s;
}

@keyframes rotate {
  to { transform: rotate(360deg); }
}

.cycle-core {
  position: absolute;
  z-index: 3;
  top: 50%;
  left: 50%;
  display: grid;
  width: 35%;
  aspect-ratio: 1;
  place-content: center;
  text-align: center;
  border: 1px solid rgba(111,240,181,0.32);
  border-radius: 50%;
  background: var(--surface);
  box-shadow: 0 0 70px rgba(53,216,151,0.12);
  transform: translate(-50%, -50%);
}

.cycle-core span,
.cycle-core small {
  color: var(--faint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.58rem;
  text-transform: uppercase;
}

.cycle-core strong {
  margin: 4px 0;
  color: var(--mint);
  font-size: 0.85rem;
}

.cycle-item {
  position: absolute;
  z-index: 3;
  display: grid;
  min-width: 118px;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: rgba(11,23,20,0.96);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.cycle-item span {
  position: absolute;
  top: -9px;
  right: -9px;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  color: #04100b;
  background: var(--mint);
  border-radius: 50%;
  font-size: 0.6rem;
  font-weight: 800;
}

.cycle-item strong {
  font-size: 0.8rem;
}

.cycle-item small {
  color: var(--faint);
  font-size: 0.64rem;
}

.cycle-detect { top: 4%; left: 50%; transform: translateX(-50%); }
.cycle-refresh { top: 50%; right: -2%; transform: translateY(-50%); }
.cycle-reconcile { bottom: 4%; left: 50%; transform: translateX(-50%); }
.cycle-prove { top: 50%; left: -2%; transform: translateY(-50%); }

.upkeep-list {
  display: grid;
  gap: 5px;
}

.upkeep-list article {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 15px;
  padding: 23px 0;
  border-bottom: 1px solid var(--line);
}

.upkeep-list article:last-child {
  border-bottom: 0;
}

.upkeep-marker {
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border: 2px solid var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(111,240,181,0.35);
}

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

.pack-card {
  min-height: 420px;
  padding: 30px;
}

.pack-core {
  border-color: rgba(111, 240, 181, 0.34);
  background: linear-gradient(155deg, rgba(111,240,181,0.075), rgba(255,255,255,0.008));
}

.pack-label {
  display: inline-flex;
  margin-bottom: 60px;
  padding: 6px 9px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
}

.pack-card h3 {
  font-size: 1.35rem;
}

.pack-card ul {
  display: grid;
  gap: 10px;
  margin: 25px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.pack-card li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.78rem;
}

.pack-card li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 7px;
  height: 1px;
  background: var(--mint);
}

.trust-section {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(circle at 20% 20%, rgba(118,169,255,0.05), transparent 35rem),
    var(--bg-deep);
}

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

.trust-card {
  min-height: 290px;
  padding: 28px;
}

.trust-number {
  margin-bottom: 52px;
}

.access-section {
  padding: 95px 0;
  background:
    radial-gradient(circle at 90% 50%, rgba(53,216,151,0.1), transparent 32rem),
    var(--bg);
}

.access-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 60px;
  padding: 50px;
  border: 1px solid rgba(111,240,181,0.28);
  border-radius: 28px;
  background:
    linear-gradient(120deg, rgba(111,240,181,0.075), transparent 45%),
    var(--surface);
  box-shadow: var(--shadow);
}

.access-card > div:first-child {
  max-width: 720px;
}

.access-card h2 {
  font-size: clamp(2.2rem, 4.3vw, 4rem);
}

.access-actions {
  flex-direction: column;
  min-width: 230px;
}

.site-footer {
  padding: 58px 0;
  border-top: 1px solid var(--line);
  background: var(--bg-deep);
}

.footer-grid {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 40px;
}

.footer-grid > p {
  margin: 0;
  color: var(--faint);
  font-size: 0.8rem;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.copyright {
  grid-column: 1 / -1;
  padding-top: 26px;
  color: var(--faint);
  border-top: 1px solid var(--line);
  font-size: 0.7rem;
}

:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 4px;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 500ms ease, transform 500ms ease;
}

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

.not-found-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.not-found-card {
  width: min(100%, 620px);
  padding: 48px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.not-found-code {
  color: var(--mint);
  font: 700 0.72rem/1.2 "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.not-found-card h1 {
  margin: 20px 0 14px;
  font-size: clamp(2.6rem, 9vw, 4.6rem);
  line-height: 1;
  letter-spacing: -0.055em;
}

.not-found-card p {
  margin-bottom: 28px;
  color: var(--muted);
}

@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .hero-copy {
    max-width: 850px;
  }

  .continuity-console {
    max-width: 720px;
    transform: none;
  }

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

  .system-map {
    grid-template-columns: 1fr 48px 1fr 48px 1fr;
  }

  .method-track {
    grid-template-columns: repeat(3, 1fr);
  }

  .method-track article:nth-child(3) {
    border-right: 0;
  }

  .method-track article:nth-child(-n+3) {
    border-bottom: 1px solid var(--line);
  }

  .method-track article:nth-child(3)::after {
    display: none;
  }

  .upkeep-layout {
    grid-template-columns: 1fr;
    gap: 55px;
  }

  .cycle-visual {
    max-width: 500px;
  }

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

  .pack-card {
    min-height: auto;
  }

  .pack-label {
    margin-bottom: 38px;
  }

  .access-card {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .access-actions {
    flex-direction: row;
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .nav-cta {
    display: none;
  }

  .site-nav {
    position: fixed;
    z-index: 95;
    inset: 76px 0 auto;
    display: grid;
    align-content: start;
    justify-content: stretch;
    gap: 0;
    height: calc(100vh - 76px);
    padding: 24px 20px;
    background: rgba(4,10,9,0.98);
    border-top: 1px solid var(--line);
    transform: translateX(100%);
    transition: transform 180ms ease;
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .site-nav a {
    padding: 18px 10px;
    border-bottom: 1px solid var(--line);
    font-size: 1.05rem;
  }

  .proof-strip {
    display: block;
  }

  .proof-strip ol {
    grid-template-columns: repeat(3, 1fr);
    margin-top: 18px;
  }

  .three-grid,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .problem-card,
  .trust-card {
    min-height: auto;
  }

  .card-index,
  .trust-number {
    margin-bottom: 38px;
  }

  .system-map {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .flow-arrow {
    width: 1px;
    height: 32px;
    margin-inline: auto;
  }

  .flow-arrow::after {
    top: auto;
    right: -4px;
    bottom: 0;
    transform: rotate(135deg);
  }

  .flow-arrow span {
    top: 5%;
    left: -2px;
    animation: flow-vertical 2.6s linear infinite;
  }

  @keyframes flow-vertical {
    from { top: 5%; opacity: 0; }
    15%, 85% { opacity: 1; }
    to { top: 88%; opacity: 0; }
  }

  .integrity-loop {
    display: none;
  }

  .component-grid {
    margin-top: 55px;
  }

  .split-layout {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .sticky-copy {
    position: static;
  }

  .volumes-section {
    background: radial-gradient(circle at 70% 40%, rgba(118,169,255,0.055), transparent 38rem);
  }

  .method-track {
    grid-template-columns: 1fr;
  }

  .method-track article,
  .method-track article:nth-child(3) {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .method-track article:last-child {
    border-bottom: 0;
  }

  .method-track article::after {
    display: none;
  }

  .method-track span {
    margin-bottom: 35px;
  }

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

  .footer-links {
    flex-wrap: wrap;
  }
}

@media (max-width: 620px) {
  .shell {
    width: min(calc(100% - 28px), var(--shell));
  }

  .hero {
    padding-top: 128px;
  }

  .hero h1 {
    font-size: clamp(3rem, 15vw, 4.4rem);
  }

  .hero-actions,
  .access-actions {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
  }

  .proof-strip ol {
    grid-template-columns: 1fr 1fr;
  }

  .console-body {
    padding: 18px;
  }

  .console-row {
    grid-template-columns: 28px 1fr;
  }

  .row-state {
    grid-column: 2;
    justify-self: start;
  }

  .section {
    padding: 88px 0;
  }

  .section-heading h2,
  .sticky-copy h2,
  .access-card h2 {
    font-size: clamp(2.15rem, 12vw, 3.2rem);
  }

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

  .component-card {
    min-height: auto;
  }

  .volume-layer {
    grid-template-columns: 1fr;
  }

  .cycle-visual {
    width: 92%;
    margin-block: 20px;
  }

  .cycle-item {
    min-width: 94px;
    padding: 9px 11px;
  }

  .cycle-item strong {
    font-size: 0.7rem;
  }

  .cycle-item small {
    font-size: 0.55rem;
  }

  .cycle-refresh { right: -6%; }
  .cycle-prove { left: -6%; }

  .access-card {
    padding: 32px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}