.hero-preview {
  position: relative;
  display: flex;
  min-height: calc(100svh - var(--header-height));
  align-items: center;
  overflow-x: clip;
}

.hero-preview::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--color-border) 26%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--color-border) 26%, transparent) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  mask-image: linear-gradient(to right, transparent, var(--color-shadow), transparent);
  opacity: 0.34;
  pointer-events: none;
}

.hero-preview::after {
  position: absolute;
  top: 8%;
  right: 2%;
  width: min(54vw, 760px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--color-accent) 14%, transparent), transparent 68%);
  content: "";
  pointer-events: none;
}

.hero-preview-grid {
  position: relative;
  z-index: 2;
  display: grid;
  width: 100%;
  grid-template-columns: minmax(0, 45%) minmax(0, 55%);
  align-items: center;
  gap: 36px;
  padding-top: 52px;
  padding-bottom: 52px;
}

.hero-copy {
  min-width: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.hero-lines {
  margin-top: 22px;
}

.hero-lines > span {
  display: block;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
}

.hero-description {
  max-width: 500px;
  margin-top: 23px;
  color: var(--color-text-muted);
  font-size: 15.5px;
  line-height: 1.8;
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 18px;
  list-style: none;
}

.trust-list li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 13px;
}

.trust-list li::before {
  width: 5px;
  height: 5px;
  flex-shrink: 0;
  background: var(--color-accent);
  content: "";
}

.spec-row {
  display: flex;
  min-width: 0;
  align-items: flex-start;
  gap: 18px;
  margin-top: 26px;
}

.spec-row + .spec-row {
  margin-top: 13px;
}

.spec-caption {
  width: 72px;
  flex-shrink: 0;
  padding-top: 3px;
  color: var(--color-annotation);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
}

.chip-list {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  gap: 9px 17px;
}

.platform-chip,
.flag-chip {
  display: inline-flex;
  min-width: 24px;
  min-height: 24px;
  align-items: center;
  gap: 7px;
  color: var(--color-text-muted);
  font-size: 13px;
}

.platform-chip svg {
  width: 17px;
  height: 17px;
}

.platform-chip .text-icon {
  display: inline-flex;
  width: 20px;
  height: 20px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 7px;
  font-weight: 700;
}

.flag-chip svg,
.flag-inline svg {
  width: 24px;
  height: 16px;
  border-radius: var(--radius-small);
  box-shadow: 0 0 0 1px var(--color-border);
}

.hero-globe {
  position: relative;
  min-width: 0;
}

.hero-globe::before {
  position: absolute;
  inset: -3%;
  background-image: radial-gradient(color-mix(in srgb, var(--color-accent) 25%, transparent) 1px, transparent 1.4px);
  background-size: 24px 24px;
  content: "";
  mask-image: radial-gradient(closest-side, var(--color-shadow) 42%, transparent 78%);
  opacity: 0.45;
}

.globe-diagram {
  position: relative;
  z-index: 2;
  width: 100%;
  height: auto;
  color: var(--color-accent);
}

.globe-line {
  fill: none;
  stroke: var(--color-globe-line);
  stroke-width: 1.15;
}

.globe-outline {
  fill: none;
  stroke: var(--color-globe-line);
  stroke-width: 1.6;
}

.globe-core {
  fill: color-mix(in srgb, var(--color-accent) 8%, transparent);
}

.route-glow {
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: round;
  stroke-width: 7;
  opacity: 0.12;
}

.route-arc {
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: round;
  stroke-width: 1.7;
}

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

.route-halo {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 1;
  opacity: 0.38;
}

.route-lead {
  fill: none;
  stroke: var(--color-annotation);
  stroke-width: 1;
}

.route-label {
  fill: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.route-label-sub {
  fill: var(--color-annotation);
  font-family: var(--font-mono);
  font-size: 10px;
}

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

.fact-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.fact-band > div {
  min-width: 0;
  padding: 22px;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
}

.fact-value {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.2vw, 27px);
  font-weight: 700;
}

.fact-label {
  margin-top: 4px;
  color: var(--color-text-muted);
  font-size: 12px;
}

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

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

.tab-button,
[role="tab"] {
  position: relative;
  min-width: max-content;
  min-height: 48px;
  padding: 11px 22px;
  border: 0;
  background: var(--color-panel);
  color: var(--color-text-muted);
  font-weight: 650;
}

.tab-button::after,
[role="tab"]::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--color-accent);
  content: "";
  transform: scaleX(0);
}

.tab-button[aria-selected="true"],
[role="tab"][aria-selected="true"] {
  color: var(--color-text);
}

.tab-button[aria-selected="true"]::after,
[role="tab"][aria-selected="true"]::after {
  transform: scaleX(1);
}

.tab-panel,
[role="tabpanel"] {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-top: 0;
  background: var(--color-panel);
}

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

.toc-tabs {
  position: sticky;
  top: var(--header-height);
  z-index: 30;
  display: flex;
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  background: var(--color-panel-raised);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.toc-tabs a {
  display: inline-flex;
  min-width: max-content;
  min-height: 44px;
  align-items: center;
  padding: 8px 16px;
  border-right: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.toc-tabs a.is-current,
.toc-tabs a[aria-current="location"] {
  background: var(--color-panel);
  color: var(--color-accent);
}

body:has(.toc-tabs) section[id] {
  scroll-margin-top: calc(var(--header-height) + 72px);
}

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

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

.faq-item summary {
  position: relative;
  min-height: 58px;
  padding: 17px 52px 17px 18px;
  color: var(--color-text);
  font-weight: 650;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 20px;
  color: var(--color-accent);
  content: "+";
  font-family: var(--font-mono);
  font-size: 20px;
  transform: translateY(-50%);
}

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

.faq-answer {
  max-width: 840px;
  padding: 0 52px 20px 18px;
  color: var(--color-text-muted);
}

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

.plan-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 100%;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--color-border);
  background: var(--color-panel);
}

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

.plan-ribbon {
  position: absolute;
  top: -13px;
  right: 16px;
  min-height: 26px;
  padding: 4px 10px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.plan-period {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.plan-price {
  margin-top: 16px;
  color: var(--color-text);
  font-size: clamp(38px, 4vw, 54px);
  font-weight: 800;
  line-height: 1;
}

.plan-price small {
  font-size: 14px;
  font-weight: 500;
}

.plan-features {
  display: grid;
  gap: 9px;
  margin: 24px 0;
  list-style: none;
  color: var(--color-text-muted);
}

.plan-features li {
  display: flex;
  gap: 9px;
}

.plan-features li::before {
  width: 5px;
  height: 5px;
  flex-shrink: 0;
  margin-top: 0.72em;
  background: var(--color-accent);
  content: "";
}

.plan-card .btn,
.plan-card .btn-primary,
.plan-card .btn-secondary {
  width: 100%;
  margin-top: auto;
}

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

.data-table,
.route-table,
.compare-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  background: var(--color-panel);
}

.data-table th,
.data-table td,
.route-table th,
.route-table td,
.compare-table th,
.compare-table td {
  padding: 14px 16px;
  border-right: 1px solid var(--color-border);
  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-raised);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.07em;
}

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

.compare-table th:nth-child(5),
.compare-table td:nth-child(5) {
  white-space: nowrap;
}

.route-group td {
  background: var(--color-panel-raised);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.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: grid;
  min-width: 0;
  min-height: 190px;
  align-content: space-between;
  gap: 24px;
  padding: 22px;
  border: 1px solid var(--color-border);
  background: var(--color-panel);
}

.platform-card-icon {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  color: var(--color-accent);
}

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

.platform-card h3 {
  font-size: 18px;
}

.platform-card .btn,
.platform-card .btn-secondary {
  width: 100%;
  padding-inline: 12px;
  font-size: 13px;
}

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

.article-card {
  display: grid;
  min-width: 0;
  min-height: 260px;
  align-content: space-between;
  gap: 28px;
  padding: 26px;
  border: 1px solid var(--color-border);
  background: var(--color-panel);
  transition: border-color 180ms ease, transform 180ms ease, background-color 180ms ease;
}

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

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  color: var(--color-annotation);
  font-family: var(--font-mono);
  font-size: 11px;
}

.article-card h3 {
  margin-top: 18px;
  font-size: 22px;
}

.article-card p {
  margin-top: 12px;
  color: var(--color-text-muted);
}

.callout {
  position: relative;
  padding: 22px 24px 22px 30px;
  border: 1px solid var(--color-border);
  background: var(--color-panel-raised);
  color: var(--color-text-muted);
}

.callout::before {
  position: absolute;
  top: -1px;
  bottom: -1px;
  left: -1px;
  width: 4px;
  background: var(--color-accent);
  content: "";
}

.callout strong {
  display: block;
  margin-bottom: 5px;
}

.promo-block {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 28px;
  padding: clamp(26px, 4vw, 48px);
  border: 1px solid var(--color-accent);
  background:
    linear-gradient(105deg, color-mix(in srgb, var(--color-accent) 10%, transparent), transparent 54%),
    var(--color-panel-raised);
  box-shadow: var(--shadow-accent);
}

.promo-block p {
  max-width: 720px;
  margin-top: 8px;
  color: var(--color-text-muted);
}

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

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

.preview-section + .preview-section {
  border-top: 1px solid var(--color-border);
}

.preview-heading {
  display: grid;
  max-width: 760px;
  gap: 12px;
  margin-bottom: 38px;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.preview-stack {
  display: grid;
  gap: 20px;
}

.preview-panel {
  min-width: 0;
  padding: 26px;
  border: 1px solid var(--color-border);
  background: var(--color-panel);
}

.preview-panel > * + * {
  margin-top: 18px;
}

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

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

.swatch-color {
  height: 84px;
}

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

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

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

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

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

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

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

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

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

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

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

.swatch-label {
  padding: 10px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  overflow-wrap: anywhere;
}

.type-sample-display {
  font-family: var(--font-display);
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.1;
}

.type-sample-body {
  max-width: 650px;
  color: var(--color-text-muted);
  font-size: 17px;
}

.type-sample-mono {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

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

.feature-browser {
  display: grid;
  grid-template-columns: minmax(210px, 0.7fr) minmax(0, 1.6fr);
  border: 1px solid var(--color-border);
}

.feature-index {
  display: grid;
  align-content: start;
  border-right: 1px solid var(--color-border);
  background: var(--color-panel);
}

.feature-index button {
  display: grid;
  min-height: 58px;
  grid-template-columns: 38px 1fr;
  align-items: center;
  padding: 10px 16px;
  border: 0;
  border-bottom: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  text-align: left;
}

.feature-index button[aria-selected="true"] {
  box-shadow: inset 3px 0 var(--color-accent);
  color: var(--color-text);
}

.feature-number {
  color: var(--color-annotation);
  font-family: var(--font-mono);
  font-size: 11px;
}

.feature-detail {
  min-width: 0;
  padding: clamp(26px, 4vw, 48px);
  background: var(--color-panel-raised);
}

.feature-detail p {
  max-width: 680px;
  margin-top: 16px;
  color: var(--color-text-muted);
}

.feature-note {
  margin-top: 30px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

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

@media (max-width: 1080px) {
  .hero-preview {
    min-height: auto;
  }

  .hero-preview-grid {
    grid-template-columns: 1fr;
    padding-top: 60px;
    padding-bottom: 60px;
  }

  .hero-globe {
    order: -1;
    max-width: 680px;
    margin-inline: auto;
  }

  .route-callout {
    display: none;
  }

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

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

@media (max-width: 820px) {
  .plan-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .feature-browser {
    grid-template-columns: 1fr;
  }

  .feature-index {
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .preview-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .hero-preview-grid {
    padding-top: 40px;
    padding-bottom: 48px;
  }

  .hero-globe {
    width: 112%;
    margin-left: -6%;
  }

  .hero-actions {
    align-items: stretch;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    flex: 1 1 145px;
  }

  .spec-row {
    display: grid;
    gap: 8px;
  }

  .spec-caption {
    width: auto;
  }

  .fact-band {
    grid-template-columns: 1fr;
  }

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

  .platform-card {
    padding: 17px;
  }

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

  .tab-panel,
  [role="tabpanel"] {
    padding: 20px 16px;
  }

  .preview-panel {
    padding: 20px 16px;
  }
}