:root {
  --matrix-line: #E4E6EA;
  --matrix-line-strong: #C9CDD4;
  --matrix-flag-red: #C4372E;
  --matrix-flag-blue: #2B3F6C;
  --matrix-flag-white: #FFFFFF;
  --preview-swatch-dark: #17181C;
  --preview-swatch-muted: #5B616B;
}

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

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

.tab-list [role="tab"] {
  min-height: 40px;
  flex: 0 0 auto;
  border-radius: var(--radius-xs);
  padding: 9px 16px;
  background: transparent;
  color: var(--color-text-muted);
  font-weight: 700;
  white-space: nowrap;
}

.tab-list [role="tab"]:hover {
  color: var(--color-text);
}

.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].is-active {
  background: var(--color-text);
  color: var(--color-canvas);
}

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

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

.toc-tabs {
  position: sticky;
  z-index: 30;
  top: var(--toc-sticky-top);
  display: flex;
  max-width: 100%;
  gap: 6px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px;
  background: var(--color-canvas);
  box-shadow: 0 5px 18px var(--color-shadow-soft);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.toc-tabs a {
  display: inline-flex;
  min-height: 38px;
  flex: 0 0 auto;
  align-items: center;
  border-radius: var(--radius-xs);
  padding: 8px 13px;
  color: var(--color-text-muted);
  font-size: 0.86rem;
  font-weight: 650;
  white-space: nowrap;
}

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

.toc-tabs a.is-current::before,
.toc-tabs a[aria-current="location"]::before {
  width: 7px;
  height: 7px;
  margin-right: 7px;
  flex: 0 0 7px;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
}

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

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

.faq-item summary {
  position: relative;
  padding: 22px 42px 22px 0;
  cursor: pointer;
  font-weight: 750;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 8px;
  color: var(--color-text-muted);
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.3rem;
  transform: translateY(-50%);
}

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

.faq-answer {
  max-width: 820px;
  padding: 0 42px 22px 0;
  color: var(--color-text-muted);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.plan-card {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 25px;
  background: var(--color-canvas);
  box-shadow: 0 1px 2px var(--color-shadow-soft);
}

.plan-card.is-current,
.plan-card.featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-soft), var(--shadow-card);
}

.plan-ribbon {
  position: absolute;
  top: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-pill);
  padding: 5px 9px;
  background: var(--color-accent);
  color: var(--color-canvas);
  font-size: 0.72rem;
  font-weight: 750;
}

.plan-name {
  margin: 0 0 12px;
  font-size: 1.05rem;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.plan-price strong {
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1;
}

.plan-price span {
  color: var(--color-text-muted);
  font-size: 0.84rem;
}

.plan-spec {
  margin: 14px 0 18px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.plan-features {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.plan-features li {
  position: relative;
  padding-left: 19px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.plan-features li + li {
  margin-top: 8px;
}

.plan-features li::before {
  position: absolute;
  top: 0.62em;
  left: 2px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
  content: "";
}

.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);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  -webkit-overflow-scrolling: touch;
}

.data-table,
.server-table,
.compare-table {
  width: 100%;
  min-width: 680px;
  text-align: left;
}

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

.data-table th,
.server-table th,
.compare-table th {
  background: var(--color-panel-strong);
  color: var(--color-text);
  font-size: 0.8rem;
  font-weight: 750;
  letter-spacing: 0.02em;
}

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

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

.server-group-row th {
  background: var(--color-canvas);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.route-type {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 4px 9px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  white-space: nowrap;
}

.prose > .data-table {
  display: block;
  min-width: 0;
  max-width: 100%;
  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;
  flex-direction: column;
  align-items: flex-start;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 18px;
  background: var(--color-canvas);
}

.platform-icon {
  display: inline-flex;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-panel-strong);
  color: var(--color-text);
}

.platform-icon svg {
  width: 21px;
  height: 21px;
}

.platform-card h3 {
  margin: 14px 0 4px;
  font-size: 1rem;
}

.platform-card p {
  margin-bottom: 16px;
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

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

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.article-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
  background: var(--color-canvas);
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.article-card:hover {
  border-color: var(--color-divider);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 12px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.article-card h3 {
  margin-bottom: 10px;
  font-size: 1.22rem;
}

.article-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.article-card .text-link {
  margin-top: auto;
  font-size: 0.86rem;
}

.callout {
  border-left: 3px solid var(--color-info);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 18px 20px;
  background: var(--color-info-soft);
  color: var(--color-text);
}

.callout.success {
  border-left-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.callout.warning {
  border-left-color: var(--color-warning);
  background: var(--color-warning-soft);
}

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

.end-promo {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 30px;
  border-radius: var(--radius-md);
  padding: clamp(28px, 5vw, 52px);
  background: var(--color-text);
  color: var(--color-canvas);
  box-shadow: var(--shadow-card);
}

.end-promo h2,
.end-promo p {
  color: var(--color-canvas);
}

.end-promo h2 {
  margin-bottom: 8px;
  font-size: clamp(27px, 4vw, 42px);
}

.end-promo p {
  margin-bottom: 0;
  opacity: 0.78;
}

.end-promo .btn-primary {
  border-color: var(--color-canvas);
  background: var(--color-canvas);
  color: var(--color-text);
}

.float-cta {
  position: fixed;
  z-index: 80;
  right: 24px;
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  gap: 9px;
  border-radius: var(--radius-pill);
  padding: 12px 21px;
  background: var(--color-text);
  color: var(--color-canvas);
  font-size: 0.88rem;
  font-weight: 750;
  box-shadow: var(--shadow-button);
  transition: transform var(--transition-fast);
}

.float-cta:hover {
  transform: translateY(-2px);
}

.float-cta svg {
  width: 17px;
  height: 17px;
  flex: 0 0 17px;
}

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(220px, 0.72fr) minmax(0, 1.6fr);
  gap: 18px;
}

.feature-index {
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-index li + li {
  margin-top: 7px;
}

.feature-index button {
  position: relative;
  display: grid;
  width: 100%;
  min-height: 50px;
  grid-template-columns: 34px 1fr;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 11px 13px;
  background: var(--color-canvas);
  color: var(--color-text-muted);
  text-align: left;
}

.feature-index button .mono {
  font-size: 0.72rem;
}

.feature-index button.is-active {
  border-color: var(--color-divider);
  color: var(--color-text);
  font-weight: 700;
}

.feature-index button.is-active::before {
  position: absolute;
  left: -4px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--color-canvas);
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
  content: "";
}

.feature-detail {
  min-height: 340px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: clamp(24px, 4vw, 44px);
  background: var(--color-panel);
}

.feature-detail .spec-line {
  margin-top: 24px;
  border-top: 1px solid var(--color-border);
  padding-top: 15px;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.hero-preview {
  min-height: 640px;
  border-bottom: 1px solid var(--color-border);
}

.hero-preview-grid {
  display: grid;
  min-height: 640px;
  grid-template-columns: 47% 53%;
}

.hero-preview-copy {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  background: var(--color-canvas);
}

.hero-preview-inner {
  width: 100%;
  max-width: 600px;
  padding: 48px 56px 48px var(--gutter);
}

.hero-kicker {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 6px 13px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.hero-kicker svg {
  width: 12px;
  height: 12px;
  flex: 0 0 12px;
  color: var(--color-info);
}

.hero-preview h1 {
  margin: 20px 0 26px;
}

.hero-title-muted {
  display: block;
  color: var(--color-text-muted);
}

.hero-description {
  max-width: 500px;
  margin: 22px 0 20px;
  color: var(--color-text-muted);
  font-size: 0.98rem;
  line-height: 1.78;
}

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

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.trust-list li {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.trust-list svg {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
  color: var(--color-accent);
}

.hero-preview-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  border-left: 1px solid var(--color-border);
  padding: 40px 44px;
  background: var(--color-panel);
}

.matrix-card {
  width: 100%;
  max-width: 684px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px 16px;
  background: var(--color-canvas);
  box-shadow: var(--shadow-card);
}

.matrix-head,
.matrix-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.matrix-head {
  margin-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 14px;
}

.matrix-label {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.07em;
}

.matrix-legend {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--color-text-muted);
  font-size: 0.74rem;
}

.matrix-grid {
  display: grid;
  grid-template-columns: 132px repeat(5, minmax(58px, 1fr));
  grid-template-rows: 58px repeat(5, 57px);
  min-width: 510px;
}

.matrix-scroll {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.matrix-cell {
  position: relative;
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--matrix-line);
  border-bottom: 1px solid var(--matrix-line);
}

.matrix-cell:nth-child(6n) {
  border-right: 0;
}

.matrix-cell:nth-last-child(-n + 6) {
  border-bottom: 0;
}

.matrix-corner,
.matrix-row-label {
  justify-content: flex-start;
}

.matrix-code {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.58rem;
}

.matrix-column {
  flex-direction: column;
  gap: 4px;
  color: var(--color-text);
  font-size: 0.72rem;
  font-weight: 650;
}

.matrix-column .matrix-code {
  position: absolute;
  top: 2px;
}

.matrix-row-label {
  gap: 8px;
  padding-inline: 5px;
  font-size: 0.73rem;
  font-weight: 650;
}

.matrix-row-label .matrix-code {
  width: 20px;
  flex: 0 0 20px;
}

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

.matrix-point::before {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-border);
  content: "";
}

.matrix-point.connected::before {
  width: 11px;
  height: 11px;
  border: 2px solid var(--color-canvas);
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.matrix-point.connected::after {
  position: absolute;
  z-index: 0;
  right: 50%;
  left: -1px;
  height: 1px;
  background: var(--color-accent);
  content: "";
}

.matrix-flag {
  width: 22px;
  height: 15px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 2px;
}

.matrix-foot {
  justify-content: flex-start;
  margin-top: 12px;
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.matrix-foot strong {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.preview-band {
  border-bottom: 1px solid var(--color-border);
}

.preview-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 32px;
}

.preview-heading h2 {
  margin-bottom: 0;
}

.preview-heading p {
  max-width: 520px;
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.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-sm);
  background: var(--color-canvas);
}

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

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

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

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

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

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

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

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

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

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

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

.swatch-copy {
  padding: 12px;
}

.swatch-copy strong,
.swatch-copy code {
  display: block;
}

.swatch-copy code {
  margin-top: 3px;
  color: var(--color-text-muted);
  font-size: 0.68rem;
}

.type-samples {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.type-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  align-items: baseline;
  gap: 24px;
  border-bottom: 1px solid var(--color-border);
  padding: 22px 0;
}

.type-label {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.type-display {
  font-family: var(--font-display);
  font-size: clamp(34px, 6vw, 64px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

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

.type-body {
  max-width: 680px;
  color: var(--color-text-muted);
  font-size: 1rem;
}

.button-showcase,
.badge-showcase {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

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

.preview-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-panel);
}

.preview-footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 32px;
  padding-top: 44px;
  padding-bottom: 44px;
}

.preview-footer h2 {
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.preview-footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.preview-footer li + li {
  margin-top: 8px;
}

.preview-footer a,
.preview-footer p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.preview-footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 18px;
  padding-bottom: 22px;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

@media (max-width: 1050px) {
  .hero-preview-grid {
    grid-template-columns: 1fr;
  }

  .hero-preview-copy {
    justify-content: center;
  }

  .hero-preview-inner {
    max-width: 720px;
    padding-inline: var(--gutter);
  }

  .hero-preview-visual {
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }

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

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

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

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

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

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

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

@media (max-width: 640px) {
  .hero-preview,
  .hero-preview-grid {
    min-height: auto;
  }

  .hero-preview-inner {
    padding-top: 44px;
    padding-bottom: 38px;
  }

  .hero-preview-visual {
    padding: 22px 16px;
  }

  .matrix-card {
    padding: 16px 14px 13px;
  }

  .matrix-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .platform-grid,
  .swatch-grid,
  .preview-footer-grid {
    grid-template-columns: 1fr;
  }

  .preview-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .type-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

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

  .toc-tabs {
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }
}