.tab-list {
  display: inline-flex;
  max-width: 100%;
  gap: 5px;
  padding: 5px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  -webkit-overflow-scrolling: touch;
}

.tab-list [role="tab"] {
  min-height: 42px;
  padding: 8px 18px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-muted);
  font-weight: 700;
  white-space: nowrap;
}

.tab-list [role="tab"][aria-selected="true"] {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

[role="tabpanel"][hidden] {
  display: none;
}

.toc-tabs {
  position: sticky;
  z-index: 40;
  top: var(--toc-top);
  display: flex;
  max-width: 100%;
  gap: 7px;
  margin-block: 22px 38px;
  padding: 7px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.toc-tabs::-webkit-scrollbar {
  display: none;
}

.toc-tabs a {
  flex: 0 0 auto;
  min-height: 38px;
  padding: 7px 15px;
  border-radius: var(--radius-pill);
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.toc-tabs a:hover,
.toc-tabs a.is-current {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

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

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

.faq-item summary {
  position: relative;
  padding: 23px 44px 23px 0;
  color: var(--color-text);
  font-size: 18px;
  font-weight: 750;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 21px;
  right: 4px;
  width: 26px;
  height: 26px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  content: "+";
  font-size: 19px;
  font-weight: 500;
  line-height: 23px;
  text-align: center;
}

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

.faq-answer {
  max-width: 850px;
  padding: 0 44px 22px 0;
  color: var(--color-muted);
}

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

.plan-card {
  position: relative;
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: 30px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
}

.plan-card.is-featured {
  border: 2px solid var(--color-accent);
  background: var(--color-accent-soft);
}

.plan-ribbon {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 5px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-size: 12px;
  font-weight: 800;
}

.plan-period {
  color: var(--color-muted);
  font-size: 13px;
  font-family: var(--font-mono);
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-block: 18px;
  color: var(--color-text);
}

.plan-price strong {
  font-family: var(--font-display);
  font-size: 48px;
  line-height: 1;
}

.plan-features {
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}

.plan-features li {
  position: relative;
  padding: 7px 0 7px 22px;
  color: var(--color-muted);
}

.plan-features li::before {
  position: absolute;
  top: 14px;
  left: 2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
}

.plan-card .btn {
  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);
  -webkit-overflow-scrolling: touch;
}

.data-table,
.node-table,
.compare-table {
  width: 100%;
  min-width: 720px;
  background: var(--color-bg);
}

.data-table th,
.data-table td,
.node-table th,
.node-table td,
.compare-table th,
.compare-table td {
  padding: 15px 17px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-muted);
  text-align: left;
  vertical-align: top;
}

.data-table th,
.node-table th,
.compare-table th {
  background: var(--color-panel);
  color: var(--color-text);
  font-size: 13px;
  font-weight: 800;
}

.data-table th:first-child,
.data-table td:first-child,
.node-table th:first-child,
.node-table td:first-child {
  color: var(--color-text);
  font-weight: 700;
}

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

.node-group td {
  background: var(--color-panel-strong);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 750;
}

.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-height: 190px;
  flex-direction: column;
  align-items: flex-start;
  padding: 23px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
}

.platform-icon {
  width: 34px;
  height: 34px;
  margin-bottom: 24px;
  color: var(--color-accent-dark);
}

.platform-card h3 {
  margin-bottom: 6px;
  font-size: 19px;
}

.platform-card .btn {
  min-height: 38px;
  margin-top: auto;
  padding: 8px 15px;
  font-size: 13px;
}

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

.article-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: 25px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

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

.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.article-card h3 {
  font-size: 23px;
}

.article-card p {
  margin-bottom: 24px;
}

.article-link {
  margin-top: auto;
  color: var(--color-accent-dark);
  font-weight: 750;
}

.callout {
  margin-block: 28px;
  padding: 21px 24px;
  border-left: 5px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--color-panel);
}

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

.promo-block {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 30px;
  margin-top: 60px;
  padding: clamp(28px, 5vw, 56px);
  border-radius: var(--radius-panel);
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.promo-block h2,
.promo-block p {
  color: var(--color-on-accent);
}

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

.promo-block .btn {
  border-color: var(--color-on-accent);
  background: var(--color-on-accent);
  color: var(--color-accent-dark);
}

.float-cta {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 80;
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border: 2px solid var(--color-on-accent);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-weight: 800;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

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

.float-cta svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.spec-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
}

.spec-item {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 20px;
  padding: 32px 20px 32px 0;
  border-bottom: 1px solid var(--color-border);
}

.spec-item:nth-child(even) {
  padding-left: 28px;
}

.spec-number {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  color: var(--color-accent-dark);
  font: 700 12px var(--font-mono);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.spec-item:hover .spec-number {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.preview-stage {
  min-height: calc(100vh - var(--header-height));
  padding: 0 12px 12px;
}

.preview-hero {
  position: relative;
  min-height: calc(100vh - var(--header-height) - 12px);
  display: flex;
  align-items: center;
  overflow: hidden;
  border-radius: var(--radius-panel);
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.preview-hero::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-on-accent-hover) 1px, transparent 1.4px);
  background-size: 17px 17px;
  content: "";
}

.preview-hero-core {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 34px 40px 28px;
  text-align: center;
}

.preview-hero h1 {
  max-width: 1100px;
  margin: 18px auto 12px;
  color: var(--color-on-accent);
  font-size: clamp(52px, 5.8vw, 68px);
}

.preview-hero-sub {
  max-width: 760px;
  margin-inline: auto;
  color: var(--color-on-accent-muted);
  font-size: 16.5px;
}

.preview-hero .button-row {
  justify-content: center;
  margin-top: 22px;
}

.hero-button-main,
.hero-button-ghost {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 13px 38px;
  border-radius: var(--radius-pill);
  font-weight: 800;
}

.hero-button-main {
  background: var(--color-on-accent);
  color: var(--color-accent-dark);
}

.hero-button-ghost {
  border: 1.5px solid var(--color-on-accent-line);
  color: var(--color-on-accent);
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 15px;
  border: 1px solid var(--color-on-accent-line);
  border-radius: var(--radius-pill);
  color: var(--color-on-accent-muted);
  font-size: 13px;
  letter-spacing: .06em;
}

.hero-kicker::before {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--color-on-accent);
  content: "";
}

.hero-trust {
  display: flex;
  justify-content: center;
  gap: 9px;
  flex-wrap: wrap;
  margin: 17px 0 0;
  padding: 0;
  list-style: none;
}

.hero-trust li {
  padding: 4px 12px;
  border: 1px solid var(--color-on-accent-faint);
  border-radius: var(--radius-pill);
  color: var(--color-on-accent-muted);
  font-size: 12px;
}

.route-visual {
  width: min(960px, 78%);
  margin: 24px auto 0;
}

.route-visual svg {
  width: 100%;
}

.route-dash {
  fill: none;
  stroke: var(--color-on-accent);
  stroke-dasharray: 6 7;
  stroke-linecap: round;
  stroke-opacity: .4;
  stroke-width: 2;
}

.route-main {
  fill: none;
  stroke: var(--color-on-accent);
  stroke-linecap: round;
  stroke-width: 4;
}

.route-fan {
  fill: none;
  stroke: var(--color-on-accent);
  stroke-opacity: .45;
  stroke-width: 1.4;
}

.route-node {
  fill: var(--color-on-accent);
}

.route-ring {
  fill: none;
  stroke: var(--color-on-accent);
  stroke-opacity: .5;
  stroke-width: 1.5;
}

.route-label {
  fill: var(--color-on-accent);
  font: 600 13px var(--font-mono);
}

.route-note {
  fill: var(--color-on-accent);
  fill-opacity: .65;
  font: 500 12px var(--font-body);
}

.route-beam {
  animation: route-beam 5.6s linear infinite;
}

@keyframes route-beam {
  from {
    opacity: 0;
    transform: translateX(0);
  }

  8%,
  92% {
    opacity: 1;
  }

  to {
    opacity: 0;
    transform: translateX(610px);
  }
}

.hero-platforms {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.hero-platforms li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--color-on-accent-muted);
  font-size: 13px;
}

.hero-platforms svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  fill: currentColor;
}

.preview-section {
  padding-top: 90px;
  padding-bottom: 90px;
}

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

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.swatch {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.swatch-color {
  height: 92px;
}

.swatch-body {
  padding: 12px;
  background: var(--color-bg);
  font: 11px/1.5 var(--font-mono);
}

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

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

.type-samples > * {
  margin-bottom: 0;
}

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

.preview-footer {
  margin-top: 90px;
}

@media (max-width: 1020px) {
  .plan-grid,
  .article-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (max-width: 768px) {
  .preview-stage {
    padding-inline: 8px;
  }

  .preview-hero {
    min-height: auto;
  }

  .preview-hero-core {
    padding: 54px 18px 46px;
  }

  .preview-hero h1 {
    font-size: clamp(32px, 9.8vw, 40px);
  }

  .route-visual {
    width: 100%;
  }

  .route-visual .route-dash,
  .route-visual .route-note {
    display: none;
  }

  .spec-list {
    grid-template-columns: 1fr;
  }

  .spec-item:nth-child(even) {
    padding-left: 0;
  }

  .promo-block {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .plan-grid,
  .article-grid,
  .platform-grid,
  .swatch-grid {
    grid-template-columns: 1fr;
  }

  .float-cta {
    right: 14px;
    bottom: 14px;
    padding-inline: 18px;
  }

  .toc-tabs {
    border-radius: var(--radius-md);
  }

  .hero-platforms {
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .route-beam {
    animation: none;
    transform: translateX(305px);
  }
}