:root {
  color-scheme: light dark;
  --black: #000;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --light: #f5f5f7;
  --white: #fff;
  --line: #d2d2d7;
  --blue: #0071e3;
  --blue-dark: #0066cc;
  --blue-light: #2997ff;
  --green: #a7ff72;
  --graphite: #272729;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.2);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

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

.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;
}

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

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 50%;
  width: min(980px, calc(100% - 28px));
  max-width: calc(100% - 28px);
  min-height: 54px;
  display: grid;
  grid-template-columns: minmax(150px, 1fr) auto minmax(150px, 1fr);
  align-items: center;
  gap: clamp(18px, 3vw, 36px);
  padding: 9px 12px 9px 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: rgba(22, 22, 24, 0.74);
  color: #f5f5f7;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(28px) saturate(140%);
  transform: translateX(-50%);
}

.site-header[data-reveal] {
  transform: translateX(-50%) translateY(18px);
}

.site-header[data-reveal].is-visible {
  transform: translateX(-50%) translateY(0);
}

.brand,
.top-nav,
.hero-actions,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 9px;
  justify-self: start;
  font-size: 14px;
  font-weight: 650;
  line-height: 1;
}

.brand img {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border-radius: 10px;
  transform: translateY(2px);
}

.top-nav {
  justify-self: center;
  justify-content: center;
  gap: 10px;
  min-width: 0;
  padding: 0 14px;
  font-size: 13px;
  color: rgba(245, 245, 247, 0.78);
}

.top-nav a {
  min-width: 96px;
  padding: 9px 8px;
  text-align: center;
  transition: color 180ms ease, transform 180ms ease;
  white-space: nowrap;
}

.top-nav a[data-nav="docs"] {
  min-width: 132px;
}

.top-nav a:not([data-nav]) {
  min-width: 92px;
}

.top-nav a:hover,
.top-nav a.is-active {
  color: #fff;
}

.top-nav a.is-active {
  font-weight: 750;
}

.top-nav a:hover {
  transform: translateY(-1px);
}

.lang-toggle {
  justify-self: end;
  display: inline-grid;
  grid-template-columns: repeat(2, 36px);
  gap: 2px;
  padding: 3px;
  min-height: 36px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
}

.lang-toggle:hover {
  background: rgba(255, 255, 255, 0.22);
}

.lang-toggle button {
  min-width: 0;
  min-height: 30px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: rgba(245, 245, 247, 0.72);
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.lang-toggle button:hover {
  transform: translateY(-1px);
}

.lang-toggle button.is-active {
  background: #fff;
  color: var(--ink);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.18);
}

.section-dark {
  color: #f5f5f7;
  background: var(--black);
}

.section-light {
  background: var(--light);
}

.section-white {
  background: var(--white);
}

.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.25fr);
  gap: 30px;
  align-items: center;
  padding: 128px max(28px, calc((100vw - var(--max)) / 2)) 72px;
  overflow: hidden;
}

.hero-copy {
  max-width: 570px;
  min-width: 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue-light);
  font-size: 13px;
  font-weight: 650;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2 {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(46px, 7vw, 82px);
}

h2 {
  font-size: clamp(34px, 5vw, 56px);
}

h3 {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.16;
}

p {
  font-size: 17px;
  line-height: 1.55;
}

.hero-lede {
  max-width: 610px;
  margin: 22px 0 0;
  color: rgba(245, 245, 247, 0.72);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.36;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 21px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

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

.button-primary {
  background: var(--blue);
  color: #fff;
}

.button-primary:hover {
  background: var(--blue-dark);
}

.button-secondary {
  border: 1px solid rgba(255, 255, 255, 0.34);
  color: #f5f5f7;
}

.button-download {
  border: 1px solid rgba(167, 255, 114, 0.55);
  background: #a7ff72;
  color: #111;
  box-shadow: 0 12px 28px rgba(167, 255, 114, 0.18);
}

.button-download:hover {
  background: #8ee85c;
  border-color: rgba(142, 232, 92, 0.72);
}

.section-white .button-secondary,
.section-light .button-secondary {
  border-color: var(--line);
  color: var(--ink);
}

.section-white .button-download,
.section-light .button-download {
  border-color: rgba(0, 113, 227, 0.18);
  background: var(--blue);
  color: #fff;
  box-shadow: none;
}

.section-white .button-download:hover,
.section-light .button-download:hover {
  background: var(--blue-dark);
}

.disclaimer {
  max-width: 520px;
  margin: 22px 0 0;
  color: rgba(245, 245, 247, 0.58);
  font-size: 14px;
}

.hero-visual {
  position: relative;
  transform: translateX(4vw);
  animation: visualFloat 6s ease-in-out infinite;
}

.hero-visual::after {
  content: none;
}

.hero-visual img {
  width: min(880px, 64vw);
  height: auto;
  aspect-ratio: auto;
  object-fit: contain;
  filter: drop-shadow(0 28px 52px rgba(0, 0, 0, 0.42));
}

.intro-grid,
.privacy-section,
.roadmap-section,
.card-section,
.feature-section,
.flow-section,
.cta-section,
.docs-layout {
  padding: 96px max(24px, calc((100vw - var(--max)) / 2));
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 56px;
  align-items: start;
}

.privacy-section {
  display: grid;
  justify-items: center;
  gap: 44px;
  text-align: center;
}

.privacy-headline {
  display: grid;
  gap: 4px;
}

.privacy-headline span {
  display: block;
}

.privacy-intro {
  max-width: 760px;
}

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

.section-heading.centered {
  margin: 0 auto 44px;
  text-align: center;
}

.split-copy {
  display: grid;
  gap: 22px;
  color: var(--muted);
}

.boundary-grid,
.feature-grid,
.flow-list {
  display: grid;
  gap: 18px;
}

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

.boundary-card,
.feature-grid article,
.flow-list article,
.doc-panel,
.docs-index {
  border-radius: var(--radius-md);
  background: #fff;
}

.boundary-card,
.feature-grid article {
  position: relative;
  overflow: hidden;
  padding: 30px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 20px 54px rgba(0, 0, 0, 0.06);
}

.card-visual,
.flow-visual {
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 18px;
}

.card-visual {
  height: 118px;
  margin-bottom: 24px;
  background:
    radial-gradient(circle at 50% 50%, rgba(0, 113, 227, 0.14), transparent 34%),
    linear-gradient(135deg, rgba(0, 113, 227, 0.07), rgba(167, 255, 114, 0.1));
}

.card-visual svg,
.flow-visual svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.boundary-visual {
  color: var(--blue-dark);
}

.approved-node,
.approved-line {
  color: #34c759;
  stroke: currentColor;
}

.rejected-node {
  color: rgba(110, 110, 115, 0.46);
  stroke: currentColor;
}

.approved-line {
  stroke-dasharray: 46;
  animation: pathTrace 3.2s ease-in-out infinite;
}

.recognition-ring,
.approved-route,
.return-path,
.value-fill-line,
.action-fill,
.recognition-gate,
.typed-value {
  stroke-dasharray: 58;
  animation: pathTrace 2.9s ease-in-out infinite;
}

.return-path {
  color: #34c759;
  stroke: currentColor;
}

.value-fill-line,
.action-fill,
.typed-value {
  color: var(--blue-dark);
  stroke: currentColor;
  stroke-width: 3;
}

.visual-return .locked-screen {
  color: rgba(0, 113, 227, 0.68);
  stroke: currentColor;
}

.visual-return .lock-shackle,
.visual-return .recognition-gate {
  color: var(--blue-dark);
  stroke: currentColor;
}

.visual-return .recognition-check,
.visual-return .return-key {
  color: #34c759;
  stroke: currentColor;
}

.visual-return .recognition-check {
  stroke-dasharray: 20;
  animation: pathTrace 2.8s ease-in-out infinite;
}

.visual-return .return-key {
  opacity: 0;
  stroke-dasharray: 34;
  animation: returnAfterGate 2.8s ease-in-out infinite;
}

.visual-return .gate-dot {
  fill: var(--blue-dark);
  stroke: none;
  transform-origin: center;
  animation: gatePulse 2.8s ease-in-out infinite;
}

.visual-action .approved-target {
  color: rgba(41, 151, 255, 0.78);
  stroke: currentColor;
}

.visual-action .narrow-field {
  color: rgba(41, 151, 255, 0.22);
  fill: currentColor;
  stroke: rgba(41, 151, 255, 0.86);
}

.visual-action .narrow-caret {
  color: #34c759;
  stroke: currentColor;
  animation: caretBlink 1.2s ease-in-out infinite;
}

.visual-action .submit-line {
  color: rgba(255, 69, 58, 0.42);
  stroke: currentColor;
}

.blocked-action {
  color: #ff453a;
  stroke: currentColor;
}

.blocked-button {
  color: rgba(255, 69, 58, 0.24);
  stroke: currentColor;
}

.scan-path {
  stroke-dasharray: 60;
  animation: pathTrace 2.8s ease-in-out infinite;
}

.pulse-dot {
  fill: currentColor;
  stroke: none;
  transform-origin: center;
  animation: pulseDot 1.8s ease-in-out infinite;
}

.boundary-card p,
.feature-grid p,
.flow-list p,
.doc-panel p,
.doc-panel li {
  color: var(--muted);
}

.flow-section .section-heading {
  margin-bottom: 34px;
}

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

.flow-list article {
  min-height: 250px;
  padding: 28px;
  background: var(--graphite);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.flow-visual {
  height: 108px;
  margin-bottom: 30px;
  color: var(--blue-light);
  background: rgba(255, 255, 255, 0.045);
}

.flow-visual.visual-face .scan-path {
  animation-name: scanSweep;
}

.flow-visual.visual-action .blocked-action {
  transform-origin: 79px 24px;
  animation: rejectSubmit 2.8s ease-in-out infinite;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-icon {
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  color: var(--blue-dark);
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-grid article:hover .feature-icon {
  transform: translateY(-2px);
}

.feature-icon {
  transition: transform 180ms ease;
}

.check-list {
  display: grid;
  gap: clamp(14px, 2.2vw, 24px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 2px 0 2px 34px;
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 0.66em;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue);
}

.privacy-statements {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 52px);
  width: min(100%, 1050px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.privacy-statements li {
  position: relative;
  display: grid;
  align-content: center;
  min-height: 92px;
  color: var(--muted);
  font-size: clamp(16px, 1.7vw, 19px);
  line-height: 1.42;
}

.privacy-statements li::before {
  content: "";
  width: 32px;
  height: 2px;
  margin: 0 auto 18px;
  border-radius: 999px;
  background: var(--blue);
}

.check-list.compact {
  margin-top: 18px;
}

.roadmap-section .section-heading {
  margin-bottom: 4px;
}

.inline-link {
  display: inline-flex;
  margin-top: 24px;
  color: var(--blue-dark);
  font-weight: 650;
}

.cta-section {
  display: grid;
  justify-items: center;
  text-align: center;
}

.cta-section img {
  width: 82px;
  height: 82px;
  margin-bottom: 22px;
  border-radius: 22px;
}

.cta-section p {
  max-width: 650px;
  color: rgba(245, 245, 247, 0.68);
}

.site-footer {
  justify-content: space-between;
  gap: 20px;
  padding: 26px max(24px, calc((100vw - var(--max)) / 2));
  background: #050505;
  color: rgba(245, 245, 247, 0.62);
  font-size: 13px;
}

.docs-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.docs-page {
  padding-top: 124px;
}

.docs-index {
  position: sticky;
  top: 92px;
  display: grid;
  gap: 4px;
  padding: 14px;
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.docs-index a {
  border-radius: 999px;
  padding: 11px 14px;
  color: var(--muted);
  font-size: 14px;
  transition: background 180ms ease, color 180ms ease;
}

.docs-index a:hover {
  background: var(--light);
  color: var(--ink);
}

.docs-content {
  display: grid;
  gap: 18px;
}

.doc-panel {
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.doc-panel h2 {
  margin-bottom: 20px;
  font-size: clamp(28px, 4vw, 42px);
}

.doc-panel h3 {
  margin-top: 24px;
}

.doc-panel h4 {
  margin: 20px 0 10px;
  font-size: 15px;
  line-height: 1.2;
}

.doc-panel ol,
.doc-panel ul:not(.check-list) {
  margin: 0;
  padding-left: 22px;
}

.doc-panel li + li {
  margin-top: 10px;
}

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

.doc-grid section,
.faq-list section,
.callout {
  border-radius: var(--radius-sm);
  background: var(--light);
  padding: 18px;
}

.doc-steps {
  display: grid;
  gap: 18px;
}

.doc-steps section {
  border-radius: var(--radius-sm);
  background: var(--light);
  padding: 18px;
}

.doc-steps h3,
.doc-grid h3 {
  margin-top: 0;
}

.start-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.start-option-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 20px;
  border: 1px solid rgba(0, 113, 227, 0.1);
  border-radius: var(--radius-sm);
  background:
    linear-gradient(180deg, rgba(0, 113, 227, 0.05), rgba(255, 255, 255, 0)),
    var(--light);
}

.start-option-card h3 {
  margin-top: 0;
}

.start-option-card .eyebrow {
  margin-bottom: 8px;
  color: var(--blue-dark);
}

.start-option-card .check-list {
  gap: 8px;
}

.start-option-card .check-list li {
  padding-top: 0;
  padding-bottom: 0;
  line-height: 1.35;
}

.doc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.doc-callout {
  margin: 0 0 18px;
  padding: 14px 16px;
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-sm);
  background: #f4f8ff;
  color: var(--ink);
}

.protocol-map {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.protocol-map section {
  position: relative;
  display: grid;
  align-content: start;
  min-height: 158px;
  padding: 18px;
  border: 1px solid rgba(0, 113, 227, 0.12);
  border-radius: var(--radius-sm);
  background:
    linear-gradient(180deg, rgba(0, 113, 227, 0.06), rgba(255, 255, 255, 0)),
    var(--white);
}

.protocol-map section:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 31px;
  right: -11px;
  width: 20px;
  height: 2px;
  background: rgba(0, 113, 227, 0.28);
}

.protocol-map span {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 13px;
  font-weight: 750;
}

.protocol-map h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.protocol-map p {
  margin: 0;
  font-size: 14px;
  line-height: 1.48;
}

pre {
  position: relative;
  overflow-x: auto;
  margin: 0;
  min-width: 0;
  padding: 22px 62px 22px 18px;
  background: transparent;
  color: #202124;
  font-size: 13px;
  line-height: 1.72;
  white-space: pre;
  scrollbar-width: thin;
}

.code-block {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  margin: 14px 0 0;
  overflow: hidden;
  border: 1px solid #e4e7eb;
  border-radius: 10px;
  background: #f6f8fa;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.76);
}

.code-gutter {
  display: grid;
  align-content: start;
  gap: 0;
  padding: 22px 0;
  border-right: 1px solid #e1e4e8;
  background: #f0f2f4;
  color: #8a929d;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.863;
  text-align: right;
  user-select: none;
}

.code-gutter span {
  display: block;
  padding-right: 14px;
  font-variant-numeric: tabular-nums;
}

.copy-button {
  position: absolute;
  z-index: 1;
  top: 8px;
  right: 8px;
  display: inline-grid;
  width: 32px;
  height: 32px;
  padding: 0;
  place-items: center;
  border: 1px solid #d7dce2;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  color: #606975;
  font: inherit;
  cursor: pointer;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.copy-button::after {
  content: attr(data-state-label);
  position: absolute;
  top: 50%;
  right: calc(100% + 7px);
  display: block;
  padding: 5px 8px;
  border: 1px solid rgba(31, 41, 55, 0.1);
  border-radius: 7px;
  background: rgba(31, 41, 55, 0.94);
  color: #fff;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
  font-size: 12px;
  font-weight: 650;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  transform: translate(3px, -50%);
  transition: opacity 160ms ease, transform 160ms ease;
  white-space: nowrap;
}

.copy-button[data-copy-state="copied"]::after {
  opacity: 1;
  transform: translate(0, -50%);
}

.copy-icon,
.copy-icon::before,
.copy-icon::after {
  display: block;
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  border-radius: 3.5px;
}

.copy-icon {
  position: relative;
  width: 15px;
  height: 15px;
  color: #7a828d;
  border: 0;
}

.copy-icon::before,
.copy-icon::after {
  content: "";
  position: absolute;
  background: transparent;
}

.copy-icon::before {
  right: 0;
  bottom: 0;
}

.copy-icon::after {
  top: 0;
  left: 0;
  background: #fff;
}

.copy-button:hover {
  background: #fff;
  border-color: #c7ccd3;
  color: #1f2937;
  transform: translateY(-1px);
}

.copy-button:hover .copy-icon::after {
  background: #fff;
}

code {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  overflow-wrap: anywhere;
}

.code-line {
  display: block;
  min-height: 1.72em;
}

.code-token.command {
  color: #0f6b45;
  font-weight: 650;
}

.code-token.option {
  color: #d97706;
}

.code-token.url {
  color: #d97706;
}

.permission-icon {
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  color: var(--blue-dark);
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.callout {
  color: var(--ink) !important;
  font-weight: 650;
}

details {
  border-top: 1px solid var(--line);
  padding: 18px 0;
}

details:last-child {
  border-bottom: 1px solid var(--line);
}

summary {
  cursor: pointer;
  font-weight: 650;
}

.roadmap-page {
  padding: 112px max(24px, calc((100vw - var(--max)) / 2)) 96px;
}

.roadmap-hero {
  max-width: 880px;
  margin-bottom: 30px;
}

.roadmap-hero h1 {
  font-size: clamp(40px, 6vw, 66px);
}

.roadmap-hero p:not(.eyebrow) {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(17px, 1.7vw, 20px);
}

.timeline {
  --timeline-gap: clamp(56px, 8vw, 94px);
  --timeline-marker-size: 18px;
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: var(--timeline-gap);
  row-gap: 18px;
  max-width: 1060px;
  margin: 0 auto;
  padding-bottom: 42px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 24px;
  bottom: 24px;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: var(--line);
}

.timeline-item {
  position: relative;
  z-index: 1;
  grid-column: 1;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-md);
  background: #fff;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.04);
}

.timeline-item:nth-child(even) {
  grid-column: 2;
  transform: translateY(42px);
}

.timeline-marker {
  position: absolute;
  z-index: 2;
  top: 24px;
  right: calc(var(--timeline-gap) / -2 - var(--timeline-marker-size) / 2);
  width: var(--timeline-marker-size);
  height: var(--timeline-marker-size);
  border: 5px solid var(--light);
  border-radius: 50%;
  background: var(--line);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.06);
}

.timeline-item:nth-child(even) .timeline-marker {
  right: auto;
  left: calc(var(--timeline-gap) / -2 - var(--timeline-marker-size) / 2);
}

.timeline-item::after {
  content: "";
  position: absolute;
  z-index: 0;
  top: 32px;
  right: calc(var(--timeline-gap) / -2);
  width: calc(var(--timeline-gap) / 2);
  height: 2px;
  background: var(--line);
}

.timeline-item:nth-child(even)::after {
  right: auto;
  left: calc(var(--timeline-gap) / -2);
}

.timeline-item.is-current::after {
  background: rgba(0, 113, 227, 0.4);
}

.timeline-item.is-complete::after {
  background: rgba(52, 199, 89, 0.38);
}

.timeline-item.is-current {
  border-color: rgba(0, 113, 227, 0.28);
}

.timeline-item.is-current .timeline-marker {
  background: var(--blue);
}

.timeline-item.is-complete .timeline-marker {
  background: #34c759;
}

.timeline-item.is-future {
  opacity: 0.92;
}

.timeline-item h2 {
  font-size: clamp(22px, 3vw, 32px);
}

.timeline-item .eyebrow {
  margin-bottom: 8px;
  font-size: 12px;
}

.timeline-item p:not(.eyebrow) {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms ease, transform 600ms ease;
}

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

@keyframes visualFloat {
  0%,
  100% {
    transform: translateX(4vw) translateY(0);
  }
  50% {
    transform: translateX(4vw) translateY(-12px);
  }
}

@keyframes pathTrace {
  0%,
  100% {
    stroke-dashoffset: 60;
    opacity: 0.45;
  }
  45%,
  65% {
    stroke-dashoffset: 0;
    opacity: 1;
  }
}

@keyframes scanSweep {
  0%,
  100% {
    transform: translateY(-12px);
    opacity: 0.4;
  }
  50% {
    transform: translateY(12px);
    opacity: 1;
  }
}

@keyframes pulseDot {
  0%,
  100% {
    opacity: 0.5;
    transform: scale(0.78);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes rejectSubmit {
  0%,
  100% {
    opacity: 0.55;
    transform: scale(0.92);
  }
  50% {
    opacity: 1;
    transform: scale(1.04);
  }
}

@keyframes returnAfterGate {
  0%,
  42%,
  100% {
    opacity: 0;
    stroke-dashoffset: 34;
  }
  58%,
  76% {
    opacity: 1;
    stroke-dashoffset: 0;
  }
}

@keyframes gatePulse {
  0%,
  100% {
    opacity: 0.3;
    transform: scale(0.72);
  }
  42% {
    opacity: 1;
    transform: scale(1.08);
  }
  62% {
    opacity: 0;
    transform: scale(1.26);
  }
}

@keyframes caretBlink {
  0%,
  100% {
    opacity: 0.28;
  }
  50% {
    opacity: 1;
  }
}

@media (max-width: 980px) {
  .site-header {
    align-items: stretch;
    border-radius: 26px;
    grid-template-columns: 1fr auto;
    width: calc(100% - 28px);
    gap: 10px 18px;
  }

  .brand {
    flex-basis: auto;
  }

  .top-nav {
    order: 3;
    grid-column: 1 / -1;
    width: 100%;
    justify-content: space-between;
    overflow-x: auto;
    padding: 0 2px;
    border: 0;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 156px;
  }

  .hero-visual {
    transform: none;
    animation-name: visualFloatMobile;
  }

  .hero-visual img {
    width: 100%;
  }

  .intro-grid,
  .docs-layout {
    grid-template-columns: 1fr;
  }

  .boundary-grid,
  .flow-list,
  .feature-grid,
  .doc-grid,
  .faq-list,
  .protocol-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .docs-index {
    position: static;
  }

  .privacy-statements {
    grid-template-columns: 1fr;
    max-width: 680px;
  }

  .protocol-map section:not(:last-child)::after {
    content: none;
  }
}

@keyframes visualFloatMobile {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@media (max-width: 640px) {
  .site-header {
    top: 8px;
    width: calc(100% - 16px);
  }

  .brand span {
    font-size: 13px;
  }

  .top-nav {
    display: grid;
    grid-template-columns: repeat(5, max-content);
    gap: 10px;
    justify-content: start;
    padding: 0;
    font-size: 11px;
  }

  .top-nav a,
  .top-nav a[data-nav="docs"],
  .top-nav a:not([data-nav]) {
    min-width: 0;
    padding: 8px 2px;
  }

  .lang-toggle {
    grid-template-columns: repeat(2, 34px);
  }

  .hero,
  .intro-grid,
  .privacy-section,
  .roadmap-section,
  .roadmap-page,
  .card-section,
  .feature-section,
  .flow-section,
  .cta-section,
  .docs-layout {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero {
    min-height: auto;
    padding-top: 178px;
    padding-bottom: 54px;
  }

  .docs-page,
  .roadmap-page {
    padding-top: 158px;
  }

  .docs-index {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 10px;
    border-radius: 18px;
  }

  .docs-index a {
    flex: 0 0 auto;
    padding: 10px 13px;
    background: var(--light);
    white-space: nowrap;
  }

  h1 {
    font-size: clamp(34px, 9.4vw, 38px);
  }

  .hero-copy h1 {
    max-width: 13.5ch;
  }

  h2 {
    font-size: clamp(29px, 9vw, 40px);
  }

  .hero-lede {
    font-size: 18px;
  }

  .boundary-grid,
  .flow-list,
  .feature-grid,
  .doc-grid,
  .faq-list,
  .protocol-map {
    grid-template-columns: 1fr;
  }

  .protocol-map section:not(:last-child)::after {
    content: "";
    top: auto;
    right: auto;
    bottom: -10px;
    left: 31px;
    width: 2px;
    height: 20px;
  }

  .boundary-card,
  .feature-grid article,
  .flow-list article,
  .doc-panel {
    padding: 24px;
  }

  .section-heading.centered {
    text-align: left;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .timeline {
    --timeline-gap: 0px;
    grid-template-columns: 1fr;
    gap: 14px;
    max-width: 680px;
    padding: 0 0 0 26px;
  }

  .timeline::before {
    left: 9px;
    transform: none;
  }

  .timeline-item,
  .timeline-item:nth-child(even) {
    grid-column: 1;
    transform: none;
  }

  .timeline-marker,
  .timeline-item:nth-child(even) .timeline-marker {
    right: auto;
    left: -26px;
  }

  .timeline-item::after,
  .timeline-item:nth-child(even)::after {
    top: 32px;
    right: auto;
    left: -17px;
    width: 17px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

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

  .site-header[data-reveal] {
    transform: translateX(-50%);
  }
}