.tab-shell {
  min-width: 0;
}
.tab-list {
  display: flex;
  max-width: 100%;
  align-items: stretch;
  gap: 4px;
  overflow-x: auto;
  border-bottom: 1px solid var(--color-border);
  scrollbar-width: thin;
}
.tab-list [role="tab"] {
  position: relative;
  flex: 0 0 auto;
  min-height: 46px;
  padding: 10px 16px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: transparent;
  color: var(--color-muted);
  font-weight: 650;
}
.tab-list [role="tab"][aria-selected="true"] {
  color: var(--color-text);
}
.tab-list [role="tab"][aria-selected="true"]::after {
  position: absolute;
  right: 12px;
  bottom: -1px;
  left: 12px;
  height: 2px;
  border-radius: 2px 2px 0 0;
  background: var(--color-accent);
  content: "";
}
.tab-panel {
  padding-top: 24px;
}
.tab-panel[hidden] {
  display: none;
}
.toc-tabs {
  position: sticky;
  top: 0;
  z-index: 45;
  display: flex;
  max-width: 100%;
  min-height: var(--toc-height);
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  border-block: 1px solid var(--color-border);
  background: var(--color-bg);
  scrollbar-width: thin;
}
.toc-tabs a {
  position: relative;
  display: inline-flex;
  min-height: 42px;
  flex: 0 0 auto;
  align-items: center;
  padding: 8px 13px;
  color: var(--color-muted);
  font-size: 14px;
  white-space: nowrap;
}
.toc-tabs a.is-current,
.toc-tabs a[aria-current="location"] {
  color: var(--color-text);
  font-weight: 700;
}
.toc-tabs a.is-current::after,
.toc-tabs a[aria-current="location"]::after {
  position: absolute;
  right: 12px;
  bottom: 0;
  left: 12px;
  height: 2px;
  background: var(--color-accent);
  content: "";
}
body:has(.toc-tabs) section[id] {
  scroll-margin-top: calc(var(--header-height) + var(--toc-height) + 16px);
}
.faq-list {
  display: grid;
  border-top: 1px solid var(--color-border);
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-item summary {
  position: relative;
  min-height: 58px;
  padding: 17px 44px 17px 0;
  font-size: 16px;
  font-weight: 700;
  list-style: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 10px;
  color: var(--color-accent-dark);
  content: "+";
  font: 500 22px/1 var(--font-mono);
  transform: translateY(-50%);
}
.faq-item[open] summary::after {
  content: "−";
}
.faq-answer {
  max-width: 840px;
  padding: 0 44px 18px 0;
  color: var(--color-muted);
}
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.plan-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 100%;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}
.plan-card.is-featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card);
}
.plan-badge {
  position: absolute;
  top: 14px;
  right: 14px;
}
.plan-name {
  margin-bottom: 8px;
  font-size: 19px;
  font-weight: 800;
}
.plan-cycle {
  color: var(--color-muted);
  font: 12px/1.4 var(--font-mono);
}
.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-block: 22px;
}
.plan-price strong {
  font: 900 40px/1 var(--font-display);
  letter-spacing: -.02em;
}
.plan-price span {
  color: var(--color-muted);
}
.plan-features {
  display: grid;
  gap: 10px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}
.plan-features li {
  position: relative;
  padding-left: 17px;
}
.plan-features li::before {
  position: absolute;
  top: .65em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  content: "";
}
.plan-card .button {
  width: 100%;
  margin-top: auto;
}
.table-scroll {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  -webkit-overflow-scrolling: touch;
}
.data-table,
.route-table,
.compare-table {
  width: 100%;
  min-width: 700px;
  border-collapse: collapse;
  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-border);
  text-align: left;
  vertical-align: middle;
}
.data-table th,
.route-table th,
.compare-table th {
  background: var(--color-panel);
  color: var(--color-text);
  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-text);
  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 td {
  background: var(--color-panel-strong);
  color: var(--color-text);
  font: 700 12px/1.4 var(--font-mono);
}
.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 {
  display: flex;
  min-width: 0;
  min-height: 170px;
  flex-direction: column;
  align-items: flex-start;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}
.platform-icon {
  display: inline-flex;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  color: var(--color-text);
}
.platform-icon svg {
  width: 22px;
  height: 22px;
}
.platform-name {
  margin-bottom: 16px;
  font-weight: 750;
}
.platform-card .button {
  width: 100%;
  min-height: 38px;
  margin-top: auto;
  padding: 8px 10px;
  font-size: 13px;
}
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.article-card {
  display: flex;
  min-width: 0;
  min-height: 100%;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.article-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-low);
  transform: translateY(-2px);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-bottom: 16px;
  color: var(--color-muted);
  font: 12px/1.5 var(--font-mono);
}
.article-card h3 {
  font-size: 20px;
}
.article-card p {
  color: var(--color-muted);
}
.article-link {
  margin-top: auto;
  color: var(--color-accent-dark);
  font-weight: 700;
}
.callout {
  position: relative;
  margin-block: 24px;
  padding: 18px 20px 18px 24px;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}
.callout strong {
  display: block;
  margin-bottom: 5px;
}
.promo-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  margin-top: 56px;
  padding: 30px;
  border-radius: var(--radius-md);
  background: var(--color-text);
  color: var(--color-bg);
  box-shadow: var(--shadow-card);
}
.promo-block h2,
.promo-block h3 {
  color: var(--color-bg);
}
.promo-block p {
  margin-bottom: 0;
  color: var(--color-white-soft);
}
.promo-block .button {
  border-color: var(--color-bg);
  background: var(--color-bg);
  color: var(--color-text);
}
.float-cta {
  position: fixed;
  right: 24px;
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  z-index: 70;
  display: inline-flex;
  min-width: 24px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px 9px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-text);
  color: var(--color-bg);
  box-shadow: var(--shadow-card);
  font-size: 14px;
  font-weight: 700;
}
.float-cta svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}
.float-cta:hover {
  transform: translateY(-1px);
}
body:has(.float-cta)::after {
  display: block;
  height: calc(88px + env(safe-area-inset-bottom, 0px));
  content: "";
}
.hero-preview {
  position: relative;
  min-height: calc(100svh - var(--header-height));
  display: flex;
  align-items: center;
  overflow-x: clip;
  padding-top: 40px;
  padding-bottom: 48px;
  background: var(--color-bg);
}
.hero-preview::before {
  position: absolute;
  inset: 8% 3% auto auto;
  width: 42%;
  height: 62%;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-accent-soft), transparent 70%);
  content: "";
  pointer-events: none;
}
.hero-preview-grid {
  position: relative;
  z-index: 1;
  display: grid;
  width: 100%;
  grid-template-columns: minmax(0, 46fr) minmax(0, 54fr);
  align-items: center;
  gap: 56px;
}
.hero-copy,
.hero-visual {
  min-width: 0;
}
.hero-copy h1 {
  margin: 22px 0 0;
  font-size: 60px;
}
.hero-copy .button-row {
  margin-top: 26px;
}
.hero-note {
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.5;
}
.hero-lede {
  margin-top: 24px;
  color: var(--color-muted);
  font-size: 17px;
  line-height: 1.65;
}
.hero-lede strong {
  color: var(--color-text);
}
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 22px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--color-border);
  list-style: none;
}
.trust-row li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
}
.platform-line,
.flag-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 18px;
}
.line-label {
  padding-right: 12px;
  border-right: 1px solid var(--color-border);
  color: var(--color-muted);
  font: 11px/1 var(--font-mono);
}
.platform-mini,
.flag-mini {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
}
.platform-mini svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}
.flag-mini svg,
.index-flag {
  width: 21px;
  height: 14px;
  flex: 0 0 auto;
  overflow: hidden;
  border-radius: 3px;
}
.index-stack {
  position: relative;
  padding: 16px 10px 30px 14px;
  transform: rotate(-1.5deg) translateY(-8px);
}
.index-stack::before {
  position: absolute;
  inset: 28px -2px 18px 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  content: "";
}
.index-card {
  position: relative;
  z-index: 1;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
}
.index-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
}
.index-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
}
.index-search {
  display: inline-flex;
  width: 220px;
  height: 30px;
  align-items: center;
  gap: 7px;
  padding-inline: 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-muted);
  font-size: 12px;
}
.index-search svg {
  width: 14px;
  height: 14px;
}
.az-tabs {
  display: flex;
  justify-content: space-between;
  padding-inline: 14px;
  border-bottom: 1px solid var(--color-border);
}
.az-tabs span {
  position: relative;
  min-width: 16px;
  padding: 12px 0 10px;
  color: var(--color-muted);
  font: 12px/1 var(--font-mono);
  text-align: center;
}
.az-tabs .is-on {
  color: var(--color-text);
  font-weight: 800;
}
.az-tabs .is-on::after {
  position: absolute;
  right: -3px;
  bottom: -1px;
  left: -3px;
  height: 2px;
  background: var(--color-accent);
  content: "";
}
.index-routes {
  margin: 0;
  padding: 0;
  list-style: none;
}
.index-route {
  display: grid;
  min-height: 57px;
  grid-template-columns: 21px 136px 76px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 9px 16px;
}
.index-route + .index-route {
  border-top: 1px solid var(--color-border);
}
.route-name {
  min-width: 0;
  color: var(--color-muted);
  font-size: 13px;
}
.route-name b {
  margin-right: 5px;
  color: var(--color-text);
}
.route-tags {
  display: flex;
  min-width: 0;
  gap: 5px;
  overflow: hidden;
}
.route-tags span {
  flex: 0 0 auto;
  padding: 4px 5px;
  border-radius: var(--radius-xs);
  background: var(--color-panel);
  color: var(--color-muted);
  font: 10px/1 var(--font-mono);
}
.route-switch-wrap {
  display: flex;
  min-width: 82px;
  align-items: center;
  justify-content: flex-end;
  gap: 7px;
  font-size: 11px;
  font-weight: 700;
}
.route-switch {
  position: relative;
  width: 30px;
  height: 18px;
  flex: 0 0 auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
}
.route-switch::after {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-panel-strong);
  content: "";
}
.route-switch.is-on {
  border-color: var(--color-accent);
  background: var(--color-accent);
}
.route-switch.is-on::after {
  left: 14px;
  background: var(--color-bg);
}
.index-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  border-top: 1px solid var(--color-border);
  background: var(--color-panel);
  color: var(--color-muted);
  font: 11px/1.5 var(--font-mono);
}
.index-status b {
  color: var(--color-text);
}
.fact-band {
  border-block: 1px solid var(--color-border);
  background: var(--color-panel);
}
.fact-band-inner {
  display: flex;
  min-height: 56px;
  align-items: center;
  gap: 30px;
  overflow: hidden;
}
.fact-item {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
  color: var(--color-muted);
  font: 12px/1.5 var(--font-mono);
}
.fact-item b {
  color: var(--color-text);
}
.preview-main {
  overflow-x: clip;
}
.preview-section {
  padding-top: 76px;
  padding-bottom: 76px;
}
.preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.swatch-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}
.swatch {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}
.swatch-color {
  height: 76px;
  border-bottom: 1px solid var(--color-border);
}
.swatch-body {
  padding: 12px;
}
.swatch-body b,
.swatch-body code {
  display: block;
}
.swatch-body code {
  margin-top: 5px;
  color: var(--color-muted);
  font-size: 11px;
}
.swatch-bg {
  background: var(--color-bg);
}
.swatch-panel {
  background: var(--color-panel);
}
.swatch-panel-strong {
  background: var(--color-panel-strong);
}
.swatch-border {
  background: var(--color-border);
}
.swatch-accent {
  background: var(--color-accent);
}
.swatch-accent-dark {
  background: var(--color-accent-dark);
}
.swatch-text {
  background: var(--color-text);
}
.swatch-muted {
  background: var(--color-muted);
}
.swatch-success {
  background: var(--color-success);
}
.swatch-warning {
  background: var(--color-warning);
}
.type-samples {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-border);
}
.type-row {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  align-items: baseline;
  gap: 24px;
  padding-block: 22px;
  border-bottom: 1px solid var(--color-border);
}
.type-label {
  color: var(--color-muted);
  font: 12px/1.5 var(--font-mono);
}
.type-display {
  font: 900 48px/1.1 var(--font-display);
}
.type-heading {
  font: 800 30px/1.2 var(--font-display);
}
.type-body {
  font: 16px/1.7 var(--font-body);
}
.type-mono {
  font: 13px/1.6 var(--font-mono);
}
.button-demo {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.preview-footer {
  margin-top: 40px;
}
@media (max-width: 1024px) {
  .hero-preview {
    min-height: 0;
  }
  .hero-preview-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }
  .hero-copy h1 {
    font-size: 46px;
  }
  .index-stack {
    max-width: 720px;
    transform: none;
  }
  .platform-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .article-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .swatch-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (max-width: 768px) {
  .plan-grid,
  .article-grid,
  .preview-grid {
    grid-template-columns: 1fr;
  }
  .platform-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .promo-block {
    grid-template-columns: 1fr;
  }
  .hero-copy h1 {
    font-size: clamp(32px, 9vw, 40px);
  }
  .index-route {
    grid-template-columns: 21px minmax(0, 1fr) auto auto;
  }
  .route-tags {
    display: none;
  }
}
@media (max-width: 640px) {
  .index-search {
    width: 150px;
  }
  .az-tabs {
    padding-inline: 9px;
  }
  .az-tabs span {
    min-width: 9px;
    font-size: 9px;
  }
  .index-route {
    gap: 8px;
    padding-inline: 11px;
  }
  .route-switch-wrap {
    min-width: auto;
  }
  .route-switch-wrap > span:last-child {
    display: none;
  }
  .fact-band-inner {
    flex-wrap: wrap;
    gap: 8px 18px;
    padding-top: 11px;
    padding-bottom: 11px;
  }
  .platform-grid,
  .swatch-grid {
    grid-template-columns: 1fr;
  }
  .type-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .type-display {
    font-size: 38px;
  }
  .float-cta {
    right: 16px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }
}