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

.tab-list {
  display: flex;
  max-width: 100%;
  margin-bottom: 24px;
  padding: 5px;
  overflow-x: auto;
  gap: 4px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.tab-list [role="tab"] {
  min-height: 42px;
  padding: 9px 16px;
  flex: 1 0 auto;
  border: 1px solid var(--color-clear);
  border-radius: var(--radius-xs);
  background: var(--color-clear);
  color: var(--color-muted);
  cursor: pointer;
  font-weight: 600;
}

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

.tab-list [role="tab"][aria-selected="true"] {
  border-color: var(--color-line);
  background: var(--color-canvas);
  color: var(--color-ink);
}

.tab-list [role="tab"]:focus-visible {
  outline: 3px solid var(--color-lemon);
  outline-offset: -2px;
}

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

.jump-toc {
  position: sticky;
  top: 12px;
  z-index: 4;
  display: flex;
  max-width: 100%;
  margin-bottom: 36px;
  padding: 8px;
  overflow-x: auto;
  gap: 4px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  overscroll-behavior-inline: contain;
  -webkit-overflow-scrolling: touch;
}

.jump-toc a {
  min-height: 40px;
  padding: 8px 12px;
  flex: 0 0 auto;
  border-radius: var(--radius-xs);
  color: var(--color-muted);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
}

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

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

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

.faq-item summary {
  position: relative;
  padding: 20px 48px 20px 0;
  cursor: pointer;
  color: var(--color-ink);
  font-size: 18px;
  font-weight: 650;
  list-style: none;
}

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

.faq-item summary::before,
.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 10px;
  width: 16px;
  height: 2px;
  background: var(--color-accent);
  content: "";
  transform: translateY(-50%);
  transition: transform var(--transition-fast);
}

.faq-item summary::after {
  transform: translateY(-50%) rotate(90deg);
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(0);
}

.faq-answer {
  max-width: 58em;
  padding: 0 48px 22px 0;
  color: var(--color-muted);
}

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

.term-card {
  position: relative;
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--color-line);
  border-left: 5px solid var(--color-sky);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-canvas);
}

.term-card:nth-child(3n + 2) {
  border-left-color: var(--color-mint);
}

.term-card:nth-child(3n) {
  border-left-color: var(--color-lemon);
}

.term-card dt {
  margin-bottom: 8px;
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

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

.client-grid {
  display: grid;
  gap: 18px;
}

.client-card {
  position: relative;
  min-width: 0;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-canvas);
}

.client-card::before {
  position: absolute;
  top: -1px;
  left: 28px;
  width: 56px;
  height: 5px;
  border-radius: 0 0 var(--radius-xs) var(--radius-xs);
  background: var(--color-accent);
  content: "";
}

.client-card-head {
  display: flex;
  margin-bottom: 20px;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.client-card-title {
  margin-bottom: 5px;
  font-size: 26px;
}

.client-card-meta {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 13px;
}

.client-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.client-note {
  margin-top: 18px;
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.badge-featured,
.badge-recommended,
.badge-retired {
  display: inline-flex;
  max-width: 100%;
  padding: 5px 10px;
  align-items: center;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.25;
}

.badge-featured {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-canvas);
}

.badge-recommended {
  border-color: var(--color-mint);
  background: var(--color-canvas);
  color: var(--color-ink);
}

.badge-retired {
  background: var(--color-panel-strong);
  color: var(--color-muted);
}

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

.article-card {
  display: flex;
  min-width: 0;
  min-height: 260px;
  padding: clamp(22px, 3vw, 36px);
  flex-direction: column;
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.article-card:hover {
  background: var(--color-panel);
  text-decoration: none;
}

.article-card-meta {
  display: flex;
  margin-bottom: 28px;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.article-card h3 {
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-size: clamp(23px, 2.5vw, 31px);
}

.article-card p {
  margin-bottom: 20px;
  color: var(--color-muted);
}

.article-card-more {
  margin-top: auto;
  color: var(--color-accent-deep);
  font-weight: 650;
}

.callout {
  position: relative;
  margin-block: 28px;
  padding: 20px 22px 20px 28px;
  border: 1px solid var(--color-line);
  border-left: 6px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-panel);
  color: var(--color-muted);
}

.callout::before {
  position: absolute;
  top: 16px;
  left: -11px;
  width: 16px;
  height: 16px;
  border: 3px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  content: "";
}

.callout-title {
  display: block;
  margin-bottom: 6px;
  color: var(--color-ink);
  font-weight: 700;
}

.callout-info {
  border-left-color: var(--color-sky);
}

.callout-info::before {
  border-color: var(--color-sky);
}

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

.callout-success::before {
  border-color: var(--color-mint);
}

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

.callout-warning::before {
  border-color: var(--color-lemon);
}

.download-endcard {
  display: grid;
  margin-top: 54px;
  padding: clamp(24px, 4vw, 40px);
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  border: 1px solid var(--color-line);
  border-left: 7px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--color-panel);
}

.download-endcard h2,
.download-endcard h3 {
  margin-bottom: 8px;
}

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

.dl-fab {
  position: fixed;
  right: max(16px, var(--gutter));
  bottom: 18px;
  z-index: 30;
  display: flex;
  max-width: min(320px, calc(100vw - 32px));
  min-height: 58px;
  padding: 9px 15px 9px 10px;
  align-items: center;
  gap: 11px;
  border: 1px solid var(--color-accent-deep);
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-canvas);
  text-decoration: none;
}

.dl-fab:hover {
  background: var(--color-accent-deep);
  text-decoration: none;
}

.dl-fab-icon {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--color-canvas);
  border-radius: var(--radius-xs);
}

.dl-fab-icon svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

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

.dl-fab-copy strong,
.dl-fab-copy span {
  display: block;
  color: var(--color-canvas);
}

.dl-fab-copy strong {
  font-size: 14px;
}

.dl-fab-copy span {
  font-size: 12px;
  opacity: .88;
}

.cable-features {
  position: relative;
  padding-left: 58px;
}

.cable-features::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 18px;
  width: 6px;
  border-radius: var(--radius-xs);
  background: linear-gradient(to bottom, var(--color-accent), var(--color-accent-deep));
  content: "";
}

.cable-feature {
  position: relative;
  max-width: 880px;
  padding: 24px 0 40px;
}

.cable-feature:nth-child(even) {
  margin-left: clamp(18px, 7vw, 92px);
}

.cable-feature::before {
  position: absolute;
  top: 34px;
  left: -49px;
  width: 24px;
  height: 24px;
  border: 5px solid var(--color-mint);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  content: "";
}

.cable-feature::after {
  position: absolute;
  top: 45px;
  left: -25px;
  width: 20px;
  height: 3px;
  background: var(--color-ink);
  content: "";
}

.cable-feature:nth-child(3n + 2)::before {
  border-color: var(--color-sky);
}

.cable-feature:nth-child(3n)::before {
  border-color: var(--color-lemon);
}

.cable-feature h3 {
  margin-bottom: 10px;
  font-family: var(--font-display);
}

.cable-feature p {
  margin-bottom: 0;
  color: var(--color-muted);
}

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

.preview-swatch {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

.preview-swatch-color {
  height: 72px;
  margin-bottom: 12px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xs);
}

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

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

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

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

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

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

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

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

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

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

.preview-swatch code {
  display: block;
  padding: 0;
  border: 0;
  background: var(--color-clear);
  color: var(--color-muted);
  font-size: 11px;
}

.preview-stack > * + * {
  margin-top: 24px;
}

@media (max-width: 768px) {
  .glossary-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

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

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

  .cable-features {
    padding-left: 46px;
  }

  .cable-features::before {
    left: 10px;
    width: 5px;
  }

  .cable-feature:nth-child(even) {
    margin-left: 0;
  }

  .cable-feature::before {
    left: -45px;
  }

  .cable-feature::after {
    left: -21px;
    width: 16px;
  }
}

@media (max-width: 480px) {
  .client-card-head {
    flex-direction: column;
  }

  .client-actions .btn {
    width: 100%;
  }

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

  .dl-fab {
    right: 16px;
    bottom: 12px;
    left: 16px;
    max-width: none;
  }
}