.tab-shell {
  width: 100%;
}

.tab-list {
  display: inline-flex;
  max-width: 100%;
  gap: 4px;
  overflow-x: auto;
  padding: 4px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  -webkit-overflow-scrolling: touch;
}

.tab-list [role="tab"] {
  min-height: 40px;
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 650;
}

.tab-list [role="tab"][aria-selected="true"] {
  background: var(--color-page);
  color: var(--color-ink-deep);
  box-shadow: 0 1px 2px var(--color-shadow-soft);
}

.tab-panel {
  padding-top: 28px;
}

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

.toc-tabs {
  position: sticky;
  top: var(--header-height);
  z-index: 45;
  display: flex;
  max-width: 100%;
  gap: 4px;
  overflow-x: auto;
  padding: 8px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-page);
  box-shadow: 0 1px 2px var(--color-shadow-soft);
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.toc-tabs a {
  display: inline-flex;
  min-height: 38px;
  flex: 0 0 auto;
  align-items: center;
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 600;
  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-ink-deep);
}

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

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

.faq-item summary {
  position: relative;
  display: flex;
  min-height: 64px;
  align-items: center;
  padding: 18px 42px 18px 0;
  color: var(--color-ink-deep);
  font-weight: 700;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  right: 4px;
  content: "+";
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 20px;
}

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

.faq-answer {
  max-width: 820px;
  padding: 0 42px 22px 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-height: 430px;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-page);
}

.plan-card.is-featured {
  border-color: var(--color-ink-deep);
  box-shadow: var(--shadow-window);
}

.plan-card .plan-badge {
  position: absolute;
  top: 16px;
  right: 16px;
}

.plan-name {
  color: var(--color-ink-deep);
  font-size: 18px;
  font-weight: 800;
}

.plan-period {
  margin-top: 6px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 5px;
  margin-top: 28px;
  color: var(--color-ink-deep);
}

.plan-price strong {
  font-family: var(--font-display);
  font-size: 44px;
  letter-spacing: -0.03em;
  line-height: 1;
}

.plan-price span {
  color: var(--color-muted);
  font-size: 13px;
}

.plan-list {
  display: grid;
  gap: 11px;
  margin: 28px 0;
  padding: 0;
  list-style: none;
}

.plan-list li {
  position: relative;
  padding-left: 20px;
  color: var(--color-muted);
  font-size: 14px;
}

.plan-list li::before {
  position: absolute;
  left: 0;
  content: "✓";
  color: var(--color-success);
  font-weight: 800;
}

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

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

.data-table,
.server-table,
.compare-table {
  width: 100%;
  min-width: 700px;
  background: var(--color-page);
}

.data-table th,
.data-table td,
.server-table th,
.server-table td,
.compare-table th,
.compare-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-ink);
  font-size: 13px;
  text-align: left;
  vertical-align: middle;
}

.data-table th,
.server-table th,
.compare-table th {
  background: var(--color-panel);
  color: var(--color-ink-deep);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

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

.server-group td {
  background: var(--color-panel-strong);
  color: var(--color-ink-deep);
  font-family: var(--font-mono);
  font-weight: 700;
}

.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-height: 190px;
  flex-direction: column;
  align-items: flex-start;
  padding: 22px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-page);
}

.platform-icon {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-ink-deep);
  overflow: hidden;
}

.platform-icon svg {
  width: 23px;
  height: 23px;
}

.platform-card h3 {
  margin-top: 20px;
  font-size: 16px;
}

.platform-card .btn {
  margin-top: auto;
  padding: 9px 15px;
  font-size: 13px;
}

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

.article-card {
  display: flex;
  min-height: 260px;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-page);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.article-card h3 {
  margin-top: 18px;
  font-size: 21px;
  line-height: 1.35;
}

.article-card p {
  margin-top: 12px;
  color: var(--color-muted);
  font-size: 14px;
}

.article-more {
  margin-top: auto;
  padding-top: 22px;
  color: var(--color-ink-deep);
  font-size: 13px;
  font-weight: 700;
}

.callout {
  padding: 20px 22px;
  border-left: 3px solid var(--color-ink-deep);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-panel);
  color: var(--color-ink);
}

.callout.is-success {
  border-left-color: var(--color-success);
}

.callout-title {
  display: block;
  margin-bottom: 6px;
  color: var(--color-ink-deep);
  font-weight: 800;
}

.article-promo {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 30px;
  margin-top: 64px;
  padding: 34px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
}

.article-promo-brand {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.article-promo h2 {
  margin-top: 8px;
  font-size: 28px;
}

.article-promo p {
  margin-top: 8px;
  color: var(--color-muted);
}

.float-cta {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 100;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 9px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  background: var(--color-ink-deep);
  color: var(--color-page);
  box-shadow: var(--shadow-float);
  font-size: 14px;
  font-weight: 700;
}

.float-cta:hover {
  background: var(--color-ink);
}

.hero-preview {
  position: relative;
  overflow-x: clip;
  padding-top: 52px;
  background: var(--color-page);
}

.hero-ambient {
  position: absolute;
  top: 330px;
  left: 50%;
  width: min(1100px, 100%);
  height: 760px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, var(--color-panel-strong), var(--color-ambient-clear) 72%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-content h1 {
  margin-top: 22px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.hero-description {
  max-width: 760px;
  margin-top: 22px;
  color: var(--color-muted);
  font-size: 16.5px;
  line-height: 1.7;
}

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

.trust-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
}

.trust-chip-mark {
  color: var(--color-success);
  font-weight: 800;
}

.rule-window {
  position: relative;
  z-index: 2;
  width: min(880px, 100%);
  margin: 36px auto 0;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-page);
  box-shadow: var(--shadow-window);
  text-align: left;
}

.rule-titlebar {
  display: flex;
  height: 38px;
  align-items: center;
  padding: 0 14px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots i {
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  border-radius: 50%;
}

.window-dots i:nth-child(1) {
  background: var(--color-error);
}

.window-dots i:nth-child(2) {
  background: var(--color-warning);
}

.window-dots i:nth-child(3) {
  background: var(--color-success);
}

.rule-window-title {
  flex: 1;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11.5px;
  text-align: center;
}

.rule-title-spacer {
  width: 48px;
}

.rule-head,
.rule-row {
  display: grid;
  grid-template-columns: 52px 224px 1fr 176px 104px;
  align-items: center;
  padding: 10px 22px;
}

.rule-head {
  border-bottom: 1px solid var(--color-line);
}

.rule-head span {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.rule-group {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 22px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.rule-group svg {
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  color: var(--color-warning);
}

.rule-group strong {
  color: var(--color-ink);
}

.rule-row {
  border-bottom: 1px solid var(--color-line);
}

.rule-row:last-child {
  border-bottom: 0;
}

.rule-row:hover {
  background: var(--color-panel);
}

.rule-number,
.rule-domain,
.rule-state {
  font-family: var(--font-mono);
}

.rule-number {
  color: var(--color-muted);
  font-size: 11px;
}

.rule-domain {
  color: var(--color-ink-deep);
  font-size: 13.5px;
  font-weight: 550;
}

.rule-arrow {
  display: flex;
  justify-content: center;
  color: var(--color-line);
}

.rule-arrow svg {
  width: 48px;
  height: 8px;
}

.rule-exit,
.rule-state {
  display: flex;
  align-items: center;
  gap: 8px;
}

.rule-state {
  justify-content: flex-end;
  font-size: 11.5px;
}

.route-flag {
  width: 20px;
  height: 14px;
  flex: 0 0 auto;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xs);
}

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

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

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

.proof-strip {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px 22px;
  padding-top: 26px;
  padding-bottom: 44px;
}

.proof-label {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.proof-items {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.proof-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-muted);
  font-size: 12px;
}

.proof-item svg {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
}

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

.ledger-row {
  position: relative;
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 40px;
  padding: 30px 0;
  border-bottom: 1px solid var(--color-line);
}

.ledger-code {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.ledger-copy h3 {
  font-size: 19px;
}

.ledger-copy p {
  margin-top: 8px;
  color: var(--color-muted);
}

.ledger-row::after {
  position: absolute;
  top: 38px;
  right: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-success);
  content: "";
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.ledger-row:hover::after {
  opacity: 1;
}

.preview-section {
  padding-top: 88px;
  padding-bottom: 88px;
  border-top: 1px solid var(--color-line);
}

.preview-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
}

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

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 10px;
}

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

.swatch-color {
  height: 86px;
  border-bottom: 1px solid var(--color-line);
}

.swatch-info {
  padding: 10px;
  background: var(--color-page);
  font-family: var(--font-mono);
  font-size: 10px;
}

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

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

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

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

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

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

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

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

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

.type-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 30px;
  align-items: baseline;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-line);
}

.type-label {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

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

.preview-footer {
  margin-top: 88px;
}

@media (max-width: 960px) {
  .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(4, minmax(0, 1fr));
  }

  .rule-head,
  .rule-row {
    grid-template-columns: 40px minmax(150px, 1fr) 0 140px 86px;
  }

  .rule-arrow {
    display: none;
  }
}

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

  .plan-card {
    min-height: 390px;
  }

  .article-promo {
    grid-template-columns: 1fr;
    padding: 26px 20px;
  }

  .float-cta {
    right: 16px;
    bottom: 16px;
  }

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

  .hero-description {
    font-size: 15px;
  }

  .rule-window {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .rule-head,
  .rule-row {
    width: 690px;
    grid-template-columns: 42px 190px 70px 150px 96px;
  }

  .rule-group {
    width: 690px;
  }

  .rule-arrow {
    display: flex;
  }

  .proof-strip {
    align-items: flex-start;
    flex-direction: column;
  }

  .proof-items {
    justify-content: flex-start;
  }

  .ledger-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding-right: 22px;
  }

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

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

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