.hero {
  position: relative;
  min-height: calc(900px - var(--header-height));
  overflow: hidden;
  overflow-x: clip;
  isolation: isolate;
  background: linear-gradient(180deg, var(--color-panel-raised) 0%, var(--color-bg) 54%, var(--color-bg-deep) 100%);
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: -3;
  content: "";
  background-image:
    linear-gradient(var(--color-grid) 1px, var(--color-transparent) 1px),
    linear-gradient(90deg, var(--color-grid) 1px, var(--color-transparent) 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 78%, transparent 100%);
}

.hero::after {
  position: absolute;
  z-index: -2;
  top: -330px;
  left: 50%;
  width: min(1120px, 94vw);
  height: 660px;
  content: "";
  border: 1px solid var(--color-accent-line);
  border-radius: 50%;
  background: radial-gradient(ellipse at center, var(--color-accent-haze) 0%, var(--color-transparent) 68%);
  opacity: 0.75;
  transform: translateX(-50%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(calc(100% - 64px), var(--page-width));
  margin-inline: auto;
  padding-top: 27px;
  padding-bottom: 22px;
  text-align: center;
}

.hero-title {
  margin: 13px 0 0;
  font-size: clamp(52px, 6vw, 68px);
  font-weight: 790;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero-actions {
  margin-top: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.hero-button {
  min-width: 142px;
}

.hero-summary {
  max-width: 790px;
  margin: 15px auto 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.trust-strip {
  width: max-content;
  max-width: 100%;
  margin: 14px auto 0;
  display: flex;
  align-items: stretch;
  justify-content: center;
  border-top: 1px solid var(--color-border-soft);
  border-bottom: 1px solid var(--color-border-soft);
  color: var(--color-text-muted);
  background: var(--color-bg);
}

.trust-item {
  position: relative;
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 14px;
  font-size: 11px;
  white-space: nowrap;
}

.trust-item + .trust-item::before {
  position: absolute;
  top: 9px;
  bottom: 9px;
  left: 0;
  width: 1px;
  content: "";
  background: var(--color-border-soft);
}

.trust-item svg {
  width: 13px;
  height: 13px;
  flex: 0 0 auto;
  color: var(--color-accent);
}

.authorization-stage {
  width: min(100%, var(--content-width));
  margin: 20px auto 0;
  text-align: left;
}

.permission-plate {
  position: relative;
  min-height: 90px;
  border: 1px solid var(--color-border);
  border-top-color: var(--color-accent-line);
  background: linear-gradient(90deg, var(--color-panel) 0%, var(--color-panel-raised) 50%, var(--color-panel) 100%);
}

.permission-plate::before,
.permission-plate::after {
  position: absolute;
  top: -1px;
  width: 90px;
  height: 1px;
  content: "";
  background: var(--color-accent);
}

.permission-plate::before {
  left: -1px;
}

.permission-plate::after {
  right: -1px;
}

.plate-meta {
  height: 28px;
  padding: 0 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border-soft);
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 570;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.plate-state {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--color-accent);
}

.plate-state::before {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  content: "";
  background: var(--color-accent);
}

.permission-code {
  min-height: 61px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 580;
  letter-spacing: 0.025em;
}

.permission-code .resource {
  color: var(--color-text);
}

.permission-code .arrow {
  margin-inline: 18px;
  color: var(--color-text-dim);
}

.permission-code .granted {
  color: var(--color-accent);
  text-shadow: 0 0 8px var(--color-accent-glow);
}

.authorization-ledger {
  border-right: 1px solid var(--color-border-soft);
  border-bottom: 1px solid var(--color-border-soft);
  border-left: 1px solid var(--color-border-soft);
  background: var(--color-bg);
}

.ledger-row {
  min-height: 52px;
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  align-items: center;
  border-top: 1px solid var(--color-border-soft);
}

.ledger-row:first-child {
  border-top: 0;
}

.ledger-label {
  align-self: stretch;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 17px;
  border-right: 1px solid var(--color-border-soft);
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 560;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.ledger-label::before {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  content: "";
  border: 1px solid var(--color-accent-dark);
  background: var(--color-accent);
}

.grant-copy {
  padding: 10px 17px;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 520;
}

.grant-copy strong {
  font-weight: 660;
}

.grant-separator {
  color: var(--color-border);
}

.platform-list,
.region-list {
  min-width: 0;
  margin: 0;
  padding: 9px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.platform-item,
.region-item {
  min-width: 0;
  margin: 0;
  display: inline-flex;
  align-items: center;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.platform-item {
  gap: 7px;
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--color-border-soft);
  background: var(--color-panel);
  font-family: var(--font-mono);
  font-size: 10px;
}

.platform-icon {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
  color: var(--color-warn);
}

.region-item {
  gap: 7px;
  font-size: 11px;
}

.flag {
  width: 30px;
  height: 20px;
  overflow: hidden;
  flex: 0 0 auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  background: var(--color-flag-white);
}

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

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

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

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

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

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

.flag-stroke {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
}

.stage-footnote {
  min-height: 28px;
  padding: 5px 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.05em;
}

.stage-footnote strong {
  color: var(--color-text-muted);
  font-weight: 550;
}

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

.tab-list,
[role="tablist"] {
  max-width: 100%;
  display: flex;
  align-items: stretch;
  gap: 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--color-border);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.tab-button,
[role="tab"] {
  min-height: 46px;
  flex: 0 0 auto;
  padding: 0 18px;
  border: 0;
  border-bottom: 2px solid var(--color-transparent);
  color: var(--color-text-muted);
  background: var(--color-transparent);
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
}

.tab-button:hover,
.tab-button:focus-visible,
[role="tab"]:hover,
[role="tab"]:focus-visible {
  color: var(--color-text);
  background: var(--color-white-soft);
}

.tab-button.is-active,
[role="tab"][aria-selected="true"] {
  border-bottom-color: var(--color-accent);
  color: var(--color-accent);
}

.tab-panel,
[role="tabpanel"] {
  padding-top: 28px;
}

.tab-panel[hidden],
[role="tabpanel"][hidden] {
  display: none;
}

.toc-tabs {
  position: sticky;
  top: var(--toc-top);
  z-index: 60;
  max-width: 100%;
  display: flex;
  overflow-x: auto;
  border-top: 1px solid var(--color-border-soft);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel-raised);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.toc-tabs a {
  min-height: 46px;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 0 15px;
  border-bottom: 2px solid var(--color-transparent);
  color: var(--color-text-muted);
  font-size: 12px;
  white-space: nowrap;
}

.toc-tabs a:hover,
.toc-tabs a:focus-visible,
.toc-tabs a.is-current {
  color: var(--color-text);
  background: var(--color-white-soft);
}

.toc-tabs a.is-current {
  border-bottom-color: var(--color-accent);
  color: var(--color-accent);
}

.toc-sticky-host {
  position: sticky;
  top: calc(var(--toc-top) - var(--toc-lift, 0px));
  z-index: 60;
}

.toc-sticky-host .toc-tabs {
  position: static;
}

.faq-list {
  border-top: 1px solid var(--color-border);
}

.faq-item {
  border-bottom: 1px solid var(--color-border-soft);
}

.faq-item summary {
  position: relative;
  min-height: 64px;
  display: flex;
  align-items: center;
  padding: 16px 48px 16px 0;
  color: var(--color-text);
  font-weight: 650;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  right: 12px;
  content: "+";
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
}

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

.faq-answer {
  max-width: 820px;
  padding: 0 48px 22px 0;
  color: var(--color-text-muted);
}

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

.plan-card {
  position: relative;
  min-width: 0;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  background: var(--color-panel);
}

.plan-card.is-current,
.plan-card.plan-featured {
  border-color: var(--color-accent);
  background: var(--color-panel-raised);
}

.plan-card-head {
  padding: 24px 24px 18px;
  border-bottom: 1px solid var(--color-border-soft);
}

.plan-badge {
  position: absolute;
  top: -1px;
  right: -1px;
  min-height: 26px;
  display: inline-flex;
  align-items: center;
  padding: 0 9px;
  color: var(--color-bg);
  background: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}

.plan-name {
  margin-bottom: 8px;
  font-size: 18px;
}

.plan-period {
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
}

.plan-price {
  margin-top: 18px;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: clamp(32px, 5vw, 46px);
  font-weight: 700;
  line-height: 1;
}

.plan-price small {
  font-size: 12px;
  font-weight: 500;
}

.plan-body {
  flex: 1;
  padding: 22px 24px;
}

.plan-features {
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--color-text-muted);
  font-size: 14px;
}

.plan-features li {
  position: relative;
  padding-left: 18px;
}

.plan-features li::before {
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 6px;
  height: 6px;
  content: "";
  background: var(--color-accent);
}

.plan-footer {
  padding: 0 24px 24px;
}

.plan-footer .button {
  width: 100%;
}

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

.data-table,
.node-table,
.plan-table {
  width: 100%;
  min-width: 720px;
  margin: 0;
  border-collapse: collapse;
  background: var(--color-panel);
}

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

.data-table th,
.node-table th,
.plan-table th {
  color: var(--color-text);
  background: var(--color-panel-raised);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.data-table td:first-child,
.node-table td:first-child,
.plan-table td:first-child {
  color: var(--color-text);
  font-weight: 620;
}

.data-table tbody tr:last-child td,
.node-table tbody tr:last-child td,
.plan-table tbody tr:last-child td {
  border-bottom: 0;
}

.node-group-row th {
  color: var(--color-accent);
  background: var(--color-bg);
  text-transform: uppercase;
}

.table-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--color-text);
}

.table-status::before {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  content: "";
  background: var(--color-accent);
}

.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: 12px;
}

.platform-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 20px;
  border-top: 2px solid var(--color-border);
  border-right: 1px solid var(--color-border-soft);
  border-bottom: 1px solid var(--color-border-soft);
  border-left: 1px solid var(--color-border-soft);
  background: var(--color-panel);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.platform-card:hover {
  border-top-color: var(--color-accent);
  background: var(--color-panel-raised);
}

.platform-card-icon {
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  margin-bottom: 26px;
  color: var(--color-accent);
}

.platform-card h3 {
  margin-bottom: 6px;
  font-size: 16px;
}

.platform-card p {
  flex: 1;
  margin-bottom: 18px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.platform-card .button {
  width: 100%;
  padding-inline: 10px;
}

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

.article-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border-soft);
  background: var(--color-panel);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

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

.article-card-topline {
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-dark), var(--color-transparent));
}

.article-card-body {
  flex: 1;
  padding: 23px;
}

.article-meta {
  margin-bottom: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
}

.article-card h3 {
  margin-bottom: 12px;
  font-size: 20px;
}

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

.article-card-link {
  padding: 0 23px 22px;
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 650;
}

.callout {
  position: relative;
  margin: 1.75rem 0;
  padding: 20px 22px 20px 26px;
  border: 1px solid var(--color-border-soft);
  border-left: 3px solid var(--color-accent);
  background: var(--color-panel-raised);
  color: var(--color-text-muted);
}

.callout::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 54px;
  height: 1px;
  content: "";
  background: var(--color-accent);
}

.callout-title {
  display: block;
  margin-bottom: 7px;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 650;
}

.promo-block {
  position: relative;
  overflow-x: clip;
  margin-top: 64px;
  padding: clamp(28px, 5vw, 48px);
  border: 1px solid var(--color-accent-line);
  background:
    linear-gradient(110deg, var(--color-panel-raised), var(--color-panel)),
    var(--color-panel);
}

.promo-block::after {
  position: absolute;
  right: -80px;
  bottom: -150px;
  width: 300px;
  height: 300px;
  content: "";
  border: 1px solid var(--color-accent-line);
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-haze), var(--color-transparent) 68%);
}

.promo-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.promo-brand {
  margin-bottom: 8px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.promo-block h2 {
  margin-bottom: 12px;
  font-size: clamp(26px, 5vw, 42px);
}

.promo-block p {
  color: var(--color-text-muted);
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.swatch {
  min-width: 0;
  border: 1px solid var(--color-border-soft);
  background: var(--color-panel);
}

.swatch-color {
  height: 76px;
  border-bottom: 1px solid var(--color-border-soft);
}

.swatch-copy {
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  overflow-wrap: anywhere;
}

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

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

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

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

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

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

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

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

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

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

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

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

.preview-section-head {
  max-width: 760px;
  margin-bottom: 36px;
}

.preview-section-head .section-kicker {
  margin-bottom: 14px;
}

.type-specimen {
  padding: 26px 0;
  border-bottom: 1px solid var(--color-border-soft);
}

.type-label {
  margin-bottom: 10px;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 10px;
}

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

.preview-footer {
  margin-top: 0;
}

@media (max-height: 820px) and (min-width: 901px) {
  .hero-inner {
    padding-top: 18px;
  }

  .hero-title {
    font-size: 58px;
  }

  .hero-actions {
    margin-top: 13px;
  }

  .hero-summary {
    margin-top: 11px;
  }

  .trust-strip {
    margin-top: 10px;
  }

  .authorization-stage {
    margin-top: 14px;
  }

  .permission-plate {
    min-height: 80px;
  }

  .permission-code {
    min-height: 51px;
    font-size: 25px;
  }

  .ledger-row {
    min-height: 46px;
  }
}

@media (max-width: 980px) {
  .platform-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .plan-card:last-child,
  .article-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: auto;
  }

  .hero::after {
    top: -250px;
    height: 500px;
  }

  .hero-inner {
    width: 100%;
    padding: 42px var(--gutter) 54px;
  }

  .hero-title {
    font-size: clamp(28px, 9vw, 40px);
  }

  .hero-actions {
    flex-wrap: wrap;
  }

  .trust-strip {
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
  }

  .ledger-row {
    grid-template-columns: 130px minmax(0, 1fr);
  }

  .platform-list,
  .region-list {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

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

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

  .stage-footnote {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .hero-actions .hero-button {
    min-width: 0;
    flex: 1 1 140px;
  }

  .permission-code {
    min-height: 58px;
    padding-inline: 10px;
    font-size: clamp(18px, 6vw, 24px);
  }

  .permission-code .arrow {
    margin-inline: 9px;
  }

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

  .ledger-label {
    min-height: 34px;
    border-right: 0;
    border-bottom: 1px solid var(--color-border-soft);
  }

  .grant-copy {
    flex-wrap: wrap;
  }

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

  .plan-card:last-child,
  .article-card:last-child {
    grid-column: auto;
  }

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

  .toc-tabs a {
    min-height: 48px;
  }
}