.hero-preview {
  position: relative;
  overflow-x: clip;
  background:
    radial-gradient(920px 420px at 50% -90px, var(--color-surface), transparent 72%),
    var(--color-canvas);
  text-align: center;
}

.hero-preview-copy {
  position: relative;
  z-index: 2;
  padding-top: 44px;
}

.hero-preview h1 {
  margin-top: 20px;
  margin-bottom: 0;
  font-size: clamp(52px, 5.4vw, 66px);
  line-height: 1.1;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 28px;
}

.hero-summary {
  max-width: 840px;
  margin: 22px auto 0;
  color: var(--color-muted);
  font-size: 16.5px;
  line-height: 1.65;
}

.hero-summary strong {
  color: var(--color-ink);
}

.fact-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}

.platform-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 13px 24px;
  margin-top: 22px;
}

.platform-mark {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  gap: 7px;
  color: var(--color-muted);
  font-size: 13px;
}

.platform-mark svg,
.platform-icon svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  color: currentColor;
}

.hero-route {
  position: relative;
  width: min(1200px, 100%);
  margin: 32px auto 0;
  overflow: hidden;
}

.hero-route > svg {
  width: 1200px;
  max-width: 100%;
  height: auto;
}

.route-ribbon-fill {
  fill: var(--color-surface-soft);
}

.route-ribbon-edge {
  fill: none;
  stroke: var(--color-ribbon);
  stroke-width: 1.6;
}

.route-ribbon-stitch {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 1;
  stroke-dasharray: 2 10;
  opacity: .4;
}

.route-halo {
  fill: var(--color-accent-soft);
  transform-box: fill-box;
  transform-origin: center;
  animation: route-breathe 6.5s ease-in-out infinite;
}

.route-knot {
  fill: var(--color-accent);
  stroke: var(--color-accent-strong);
  stroke-width: 1.5;
  stroke-linejoin: round;
}

.route-knot-core {
  fill: var(--color-surface);
}

.route-node {
  fill: var(--color-surface);
  stroke: var(--color-line);
  stroke-width: 1.4;
}

.route-node-ring {
  fill: none;
  stroke: var(--color-surface);
  stroke-width: 2.5;
}

.route-label {
  fill: var(--color-muted);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 650;
  text-anchor: middle;
}

.flag-white {
  fill: var(--color-flag-white);
}

.flag-red {
  fill: var(--color-flag-red);
}

.flag-blue {
  fill: var(--color-flag-blue);
}

.flag-green {
  fill: var(--color-flag-green);
}

.route-flow {
  position: absolute;
  top: 0;
  left: 0;
  width: 7px;
  height: 7px;
  margin: -3.5px 0 0 -3.5px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 12px 2px var(--color-accent-glow);
  opacity: .85;
  animation: route-flow 11s linear infinite;
}

.route-flow:nth-of-type(2) {
  animation-delay: -3.7s;
}

.route-flow:nth-of-type(3) {
  animation-delay: -7.3s;
}

@keyframes route-flow {
  0% {
    opacity: 0;
    transform: translate(-8px, 156px);
  }

  6% {
    opacity: .85;
  }

  12.5% {
    transform: translate(150px, 138px);
  }

  25% {
    transform: translate(300px, 126px);
  }

  37.5% {
    transform: translate(450px, 119px);
  }

  50% {
    transform: translate(600px, 116px);
  }

  62.5% {
    transform: translate(750px, 119px);
  }

  75% {
    transform: translate(900px, 126px);
  }

  87.5% {
    transform: translate(1050px, 138px);
  }

  94% {
    opacity: .85;
  }

  100% {
    opacity: 0;
    transform: translate(1208px, 156px);
  }
}

@keyframes route-breathe {
  0%,
  100% {
    opacity: .4;
    transform: scale(1);
  }

  50% {
    opacity: .85;
    transform: scale(1.12);
  }
}

.client-mock {
  position: relative;
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  width: min(760px, 100%);
  min-height: 390px;
  margin-inline: auto;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-lift);
}

.client-mock::after {
  position: absolute;
  inset: 0;
  border: 1px solid var(--color-accent-soft);
  border-radius: inherit;
  content: "";
  pointer-events: none;
}

.client-side {
  padding: 22px 16px;
  border-right: 1px solid var(--color-line);
  background: var(--color-surface-soft);
}

.client-side-title {
  margin-bottom: 22px;
  font-size: 14px;
  font-weight: 800;
}

.client-side-item {
  display: flex;
  min-height: 38px;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius-xs);
  color: var(--color-muted);
  font-size: 12px;
}

.client-side-item.is-active {
  background: var(--color-surface);
  color: var(--color-ink);
  font-weight: 700;
}

.client-content {
  padding: 24px;
}

.client-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-line);
}

.client-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.client-switch {
  position: relative;
  width: 48px;
  height: 26px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.client-switch::after {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  content: "";
}

.client-route-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.client-route-item {
  display: flex;
  min-height: 54px;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

.client-route-item.is-selected {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.client-route-text {
  min-width: 0;
}

.client-route-text strong,
.client-route-text span {
  display: block;
}

.client-route-text strong {
  font-size: 13px;
}

.client-route-text span {
  color: var(--color-muted);
  font-size: 11px;
}

.mini-flag {
  width: 28px;
  height: 20px;
  flex: 0 0 auto;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xs);
}

.tab-set {
  min-width: 0;
}

.tab-list {
  display: flex;
  max-width: 100%;
  gap: 6px;
  padding: 5px;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-soft);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.tab-list [role="tab"] {
  min-width: max-content;
  min-height: 40px;
  padding: 8px 16px;
  border: 0;
  border-radius: var(--radius-xs);
  background: transparent;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 650;
}

.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].is-active {
  background: var(--color-surface);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.tab-panel {
  padding-top: 24px;
}

.tab-panel[hidden] {
  display: none;
}

.toc-tabs {
  position: sticky;
  top: 12px;
  z-index: 40;
  display: flex;
  max-width: 100%;
  gap: 6px;
  margin-bottom: 36px;
  padding: 7px;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.toc-tabs a {
  display: inline-flex;
  min-width: max-content;
  min-height: 38px;
  align-items: center;
  padding: 7px 13px;
  border-radius: var(--radius-xs);
  color: var(--color-muted);
  font-size: 13px;
}

.toc-tabs a:hover,
.toc-tabs a.is-current,
.toc-tabs a[aria-current="location"] {
  background: var(--color-accent-soft);
  color: var(--color-ink);
  font-weight: 700;
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  min-width: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.faq-item summary {
  position: relative;
  min-height: 56px;
  padding: 15px 48px 15px 18px;
  list-style: none;
  color: var(--color-ink);
  font-weight: 700;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 18px;
  width: 24px;
  height: 24px;
  color: var(--color-accent-strong);
  content: "+";
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 24px;
  text-align: center;
  transform: translateY(-50%);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-answer {
  padding: 0 18px 18px;
  color: var(--color-muted);
}

.faq-answer > :last-child {
  margin-bottom: 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: stretch;
}

.plan-card {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.plan-card.is-featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-main);
  transform: translateY(-5px);
}

.plan-badge {
  position: absolute;
  top: -14px;
  right: 18px;
  min-height: 28px;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
}

.plan-cycle {
  margin-bottom: 8px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.plan-price {
  margin-bottom: 12px;
  color: var(--color-ink);
  font-size: 38px;
  font-weight: 900;
  line-height: 1.1;
}

.plan-price small {
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 550;
}

.plan-features {
  display: grid;
  gap: 8px;
  margin: 18px 0 26px;
  padding: 0;
  color: var(--color-muted);
  font-size: 14px;
  list-style: none;
}

.plan-features li {
  position: relative;
  padding-left: 20px;
}

.plan-features li::before {
  position: absolute;
  left: 0;
  color: var(--color-success);
  content: "✓";
  font-weight: 850;
}

.plan-card .button {
  width: 100%;
  margin-top: auto;
}

.table-scroll {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  -webkit-overflow-scrolling: touch;
}

.data-table,
.route-table,
.compare-table {
  width: 100%;
  min-width: 680px;
  margin: 0;
  border-collapse: collapse;
  color: var(--color-muted);
  font-size: 14px;
}

.data-table th,
.data-table td,
.route-table th,
.route-table td,
.compare-table th,
.compare-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  vertical-align: middle;
}

.data-table th,
.route-table th,
.compare-table th {
  background: var(--color-surface-soft);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .02em;
}

.data-table td:first-child,
.route-table td:first-child,
.compare-table td:first-child {
  color: var(--color-ink);
  font-weight: 650;
}

.data-table tr:last-child td,
.route-table tr:last-child td,
.compare-table tr:last-child td {
  border-bottom: 0;
}

.route-group-row th {
  background: var(--color-dark);
  color: var(--color-dark-text);
}

.prose > .data-table {
  display: block;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.platform-card {
  display: flex;
  min-width: 0;
  min-height: 190px;
  align-items: center;
  flex-direction: column;
  padding: 24px 16px 18px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  text-align: center;
}

.platform-icon {
  display: grid;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  place-items: center;
  margin-bottom: 16px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-soft);
  color: var(--color-ink);
}

.platform-icon svg {
  width: 24px;
  height: 24px;
}

.platform-card h3 {
  margin-bottom: 14px;
  font-size: 16px;
}

.platform-card .button {
  width: 100%;
  margin-top: auto;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.article-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.article-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

.article-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-bottom: 16px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.article-card h3 {
  font-size: 20px;
  line-height: 1.42;
}

.article-card p {
  color: var(--color-muted);
  font-size: 14px;
}

.article-card-link {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  margin-top: auto;
  color: var(--color-accent-strong);
  font-size: 13px;
  font-weight: 750;
}

.callout {
  position: relative;
  margin: 24px 0;
  padding: 20px 22px 20px 26px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-soft);
  color: var(--color-muted);
}

.callout::before {
  position: absolute;
  top: 16px;
  bottom: 16px;
  left: 0;
  width: 4px;
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  background: var(--color-accent);
  content: "";
}

.callout strong {
  color: var(--color-ink);
}

.promo-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  margin-top: 52px;
  padding: clamp(26px, 5vw, 48px);
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-dark);
  color: var(--color-dark-text);
}

.promo-block h2,
.promo-block h3 {
  color: var(--color-dark-text);
}

.promo-block p {
  margin-bottom: 0;
  color: var(--color-dark-muted);
}

.float-cta {
  position: fixed;
  right: 26px;
  bottom: calc(26px + env(safe-area-inset-bottom, 0px));
  z-index: 80;
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  gap: 9px;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 850;
  box-shadow: var(--shadow-main);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.float-cta:hover {
  background: var(--color-accent-strong);
  transform: translateY(-2px);
}

.float-cta svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

body:has(.float-cta)::after {
  display: block;
  height: calc(88px + env(safe-area-inset-bottom, 0px));
  content: "";
}

.feature-browser {
  display: grid;
  grid-template-columns: minmax(210px, .72fr) minmax(0, 2fr);
  gap: clamp(28px, 5vw, 70px);
}

.feature-tabs {
  display: grid;
  align-content: start;
}

.feature-tab {
  position: relative;
  display: flex;
  min-height: 52px;
  align-items: center;
  gap: 13px;
  padding: 10px 12px;
  border: 0;
  border-bottom: 1px solid var(--color-grain);
  background: transparent;
  color: var(--color-dark-muted);
  text-align: left;
}

.feature-tab .mono {
  color: var(--color-accent);
  font-size: 11px;
}

.feature-tab[aria-selected="true"],
.feature-tab.is-active {
  color: var(--color-dark-text);
}

.feature-tab[aria-selected="true"]::before,
.feature-tab.is-active::before {
  position: absolute;
  top: 17px;
  bottom: 17px;
  left: 0;
  width: 3px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.feature-panel {
  min-height: 320px;
  padding: clamp(28px, 5vw, 52px);
  border: 1px solid var(--color-grain);
  border-radius: var(--radius-md);
  background: var(--color-dark-panel);
}

.feature-panel h3 {
  color: var(--color-dark-text);
}

.feature-panel p {
  color: var(--color-dark-muted);
}

.feature-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.feature-facts .chip {
  border-color: var(--color-grain);
  background: var(--color-dark);
  color: var(--color-dark-text);
}

.preview-page {
  overflow-x: clip;
}

.preview-nav-note {
  padding: 10px var(--gutter);
  background: var(--color-dark);
  color: var(--color-dark-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
}

.preview-section {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}

.preview-section-head {
  max-width: 720px;
  margin-bottom: 38px;
}

.token-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.token-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.token-swatch {
  height: 92px;
  border-bottom: 1px solid var(--color-line);
}

.swatch-canvas {
  background: var(--color-canvas);
}

.swatch-surface {
  background: var(--color-surface);
}

.swatch-soft {
  background: var(--color-surface-soft);
}

.swatch-line {
  background: var(--color-line);
}

.swatch-accent {
  background: var(--color-accent);
}

.swatch-accent-strong {
  background: var(--color-accent-strong);
}

.swatch-ink {
  background: var(--color-ink);
}

.swatch-muted {
  background: var(--color-muted);
}

.swatch-success {
  background: var(--color-success);
}

.swatch-dark {
  background: var(--color-dark);
}

.token-label {
  padding: 12px;
  overflow-wrap: anywhere;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.type-specimen {
  display: grid;
  gap: 22px;
}

.type-display {
  font-family: var(--font-display);
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 900;
  line-height: 1.08;
}

.type-heading {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.2;
}

.type-body {
  max-width: 740px;
  color: var(--color-muted);
  font-size: 18px;
}

.type-mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
}

.button-showcase {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.component-stack {
  display: grid;
  gap: 52px;
}

.component-title {
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
}

.preview-footer {
  margin-top: var(--section-space);
}

@media (max-width: 960px) {
  .platform-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .feature-browser {
    grid-template-columns: minmax(180px, .65fr) minmax(0, 1.5fr);
  }
}

@media (max-width: 640px) {
  .hero-preview-copy {
    padding-top: 34px;
  }

  .hero-preview h1 {
    font-size: clamp(28px, 10vw, 40px);
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .button,
  .hero-actions .btn-main,
  .hero-actions .btn-sub {
    width: 100%;
  }

  .platform-row {
    gap: 10px 14px;
  }

  .hero-route {
    width: 100%;
    min-height: 154px;
  }

  .hero-route > svg {
    width: 900px;
    max-width: none;
    transform: translateX(calc((100vw - 900px) / 2));
  }

  .route-flow {
    display: none;
  }

  .client-mock {
    grid-template-columns: minmax(0, 1fr);
  }

  .client-side {
    display: none;
  }

  .client-content {
    padding: 18px;
  }

  .pricing-grid,
  .article-grid,
  .platform-grid,
  .token-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .plan-card.is-featured {
    transform: none;
  }

  .promo-block {
    grid-template-columns: minmax(0, 1fr);
  }

  .promo-block .button {
    width: 100%;
  }

  .feature-browser {
    display: block;
  }

  .feature-tabs {
    gap: 8px;
    margin-bottom: 12px;
  }

  .feature-tab {
    border: 1px solid var(--color-grain);
    border-radius: var(--radius-sm);
    background: var(--color-dark-panel);
  }

  .feature-panel {
    min-height: 0;
  }

  .float-cta {
    right: 16px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }
}

@media (prefers-reduced-motion: reduce) {
  .route-flow,
  .route-halo {
    animation: none;
  }

  .route-flow {
    opacity: .6;
  }
}