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

.tab-list {
  display: flex;
  max-width: 100%;
  overflow-x: auto;
  gap: 5px;
  border-bottom: 1px solid var(--color-line);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.tab-list [role="tab"] {
  position: relative;
  min-height: 48px;
  flex: 0 0 auto;
  border: 0;
  padding: 10px 16px;
  background: var(--color-canvas);
  color: var(--color-ink-muted);
  font-weight: 700;
  cursor: pointer;
}

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

.tab-list [role="tab"][aria-selected="true"]::after {
  position: absolute;
  right: 14px;
  bottom: 0;
  left: 14px;
  height: 4px;
  border-radius: var(--radius-pill) var(--radius-pill) 0 0;
  background: var(--color-accent);
  content: "";
}

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

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

.jump-toc {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: flex;
  max-width: 100%;
  overflow-x: auto;
  gap: 7px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  padding: 7px;
  background: var(--color-canvas);
  color: var(--color-ink);
  box-shadow: var(--shadow-lift);
  scrollbar-width: none;
}

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

.jump-toc a {
  min-height: 38px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  padding: 8px 13px;
  color: var(--color-ink-muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
}

.jump-toc a:hover,
.jump-toc a[aria-current="true"] {
  background: var(--color-accent);
  color: var(--color-ink);
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  overflow: clip;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  background: var(--color-canvas);
  color: var(--color-ink);
}

.faq-item summary {
  display: flex;
  min-height: 60px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 20px;
  font-weight: 800;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-panel-strong);
  color: var(--color-ink);
  content: "+";
  font: 700 1rem/24px var(--font-mono);
  text-align: center;
}

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

.faq-answer {
  padding: 0 20px 20px;
  color: var(--color-ink-muted);
}

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

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.term-card {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: 24px;
  background: var(--color-canvas);
  color: var(--color-ink);
}

.term-card dt {
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-size: 1.14rem;
  font-weight: 850;
}

.term-card dd {
  margin: 0;
  color: var(--color-ink-muted);
}

.download-card {
  display: flex;
  min-width: 0;
  height: 100%;
  flex-direction: column;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-window);
  padding: clamp(22px, 3vw, 32px);
  background: var(--color-canvas);
  color: var(--color-ink);
}

.download-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.download-card-title {
  margin-bottom: 5px;
  font-size: 1.35rem;
}

.download-card-meta {
  color: var(--color-ink-muted);
  font-size: 0.86rem;
}

.download-options {
  display: grid;
  margin-top: 22px;
  gap: 10px;
}

.download-option {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-control);
  padding: 10px 14px;
  background: var(--color-panel);
  color: var(--color-ink);
  font-weight: 750;
  text-decoration: none;
}

.download-option:hover {
  border-color: var(--color-ink-muted);
}

.download-option small {
  color: var(--color-ink-muted);
  font-weight: 550;
}

.client-badge {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  border-radius: var(--radius-pill);
  padding: 5px 10px;
  background: var(--color-panel-strong);
  color: var(--color-ink);
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1.35;
}

.client-badge-primary {
  background: var(--color-accent);
  color: var(--color-ink);
}

.client-badge-recommended {
  border: 1px solid var(--color-line);
  background: var(--color-canvas);
  color: var(--color-ink);
}

.client-badge-retired {
  background: var(--color-panel-strong);
  color: var(--color-ink-muted);
  text-decoration: line-through;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.article-card {
  display: flex;
  min-width: 0;
  height: 100%;
  flex-direction: column;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  padding: clamp(22px, 3vw, 30px);
  background: var(--color-canvas);
  color: var(--color-ink);
}

.article-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-bottom: 16px;
  color: var(--color-ink-muted);
  font: 0.76rem var(--font-mono);
}

.article-card h3 {
  font-size: clamp(20px, 2vw, 24px);
}

.article-card p {
  color: var(--color-ink-muted);
}

.article-card-link {
  display: inline-flex;
  margin-top: auto;
  align-items: center;
  gap: 7px;
  padding-top: 12px;
  font-weight: 800;
  text-decoration: none;
}

.callout {
  position: relative;
  border: 1px solid var(--color-line);
  border-left: 5px solid var(--color-accent);
  border-radius: var(--radius-control);
  padding: 18px 20px;
  background: var(--color-panel);
  color: var(--color-ink);
}

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

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

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

.callout-error {
  border-left-color: var(--color-error);
  background: var(--color-panel);
  color: var(--color-ink);
}

.callout-success {
  border-left-color: var(--color-success);
  background: var(--color-panel);
  color: var(--color-ink);
}

.dl-fab {
  position: fixed;
  right: max(16px, var(--gutter));
  bottom: max(16px, var(--gutter));
  z-index: 45;
  display: flex;
  width: min(330px, calc(100vw - 32px));
  min-height: 70px;
  align-items: center;
  gap: 13px;
  border: 1px solid var(--color-console-line);
  border-radius: var(--radius-card);
  padding: 12px 16px;
  background: var(--color-ink);
  color: var(--color-canvas);
  box-shadow: var(--shadow-fab);
  text-decoration: none;
}

.dl-fab-icon {
  display: inline-flex;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-ink);
}

.dl-fab-icon svg {
  width: 20px;
  height: 20px;
}

.dl-fab-copy {
  min-width: 0;
}

.dl-fab-copy strong,
.dl-fab-copy small {
  display: block;
}

.dl-fab-copy strong {
  color: var(--color-canvas);
  font-size: 0.9rem;
}

.dl-fab-copy small {
  color: var(--color-console-text-soft);
  font-size: 0.75rem;
}

.article-download-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  margin-top: 48px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-window);
  padding: clamp(22px, 4vw, 36px);
  background: var(--color-panel);
  color: var(--color-ink);
}

.article-download-card h2 {
  margin-bottom: 8px;
  font-size: clamp(23px, 3vw, 32px);
}

.article-download-card p {
  margin-bottom: 0;
  color: var(--color-ink-muted);
}

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

.swatch {
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-control);
  background: var(--color-canvas);
  color: var(--color-ink);
}

.swatch-color {
  height: 74px;
  border-bottom: 1px solid var(--color-line);
}

.swatch-body {
  padding: 11px;
  font: 0.72rem/1.5 var(--font-mono);
}

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

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

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

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

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

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

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

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

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

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

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

.preview-block + .preview-block {
  margin-top: 34px;
}

.preview-footer {
  margin-top: 0;
}

@media (max-width: 760px) {
  .glossary-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

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

  .article-download-card {
    grid-template-columns: 1fr;
  }

  .jump-toc {
    top: 8px;
    border-radius: var(--radius-control);
  }
}

@media (max-width: 480px) {
  .tab-list [role="tab"] {
    padding-inline: 12px;
  }

  .faq-item summary {
    padding-inline: 16px;
  }

  .faq-answer {
    padding-inline: 16px;
  }

  .download-option {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .dl-fab {
    right: 16px;
    bottom: 16px;
  }
}