:root {
  --component-index-width: 124px;
  --fab-width: 246px;
  --faq-marker-size: 30px;
}

.tabs {
  min-width: 0;
}

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

.tab-list [role="tab"] {
  position: relative;
  min-width: 120px;
  min-height: 48px;
  padding: 10px 16px;
  flex: 1 0 auto;
  border: 0;
  border-right: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
}

.tab-list [role="tab"]:last-child {
  border-right: 0;
}

.tab-list [role="tab"]::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 3px;
  content: "";
  background: var(--color-transparent);
}

.tab-list [role="tab"]:hover,
.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].is-active {
  background: var(--color-panel-2);
  color: var(--color-text);
}

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

.tab-panel {
  min-width: 0;
  padding: clamp(20px, 4vw, 40px);
  border: var(--line-thin) solid var(--color-border);
  border-top: 0;
  background: var(--color-panel-2);
}

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

.routing-tabs {
  display: grid;
  grid-template-columns: var(--component-index-width) minmax(0, 1fr);
  border-top: var(--line-thin) solid var(--color-border);
}

.routing-tabs .tab-list {
  display: grid;
  align-content: start;
  overflow: visible;
  border-top: 0;
}

.routing-tabs .tab-list [role="tab"] {
  width: 100%;
  min-width: 0;
  min-height: 72px;
  border-right: 0;
  border-bottom: var(--line-thin) solid var(--color-border);
  text-align: left;
}

.routing-tabs .tab-panel {
  border-top: 0;
}

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

.toc-tabs a {
  min-height: 46px;
  padding: 10px 16px;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  border-right: var(--line-thin) solid var(--color-border);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.toc-tabs a:hover {
  background: var(--color-panel);
  color: var(--color-text);
}

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

.faq-item {
  border-right: var(--line-thin) solid var(--color-border);
  border-bottom: var(--line-thin) solid var(--color-border);
  border-left: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
}

.faq-item summary {
  min-height: 64px;
  padding: 15px 52px 15px 18px;
  display: flex;
  align-items: center;
  gap: 13px;
  color: var(--color-text);
  font-weight: 650;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::before {
  width: var(--faq-marker-size);
  height: var(--faq-marker-size);
  display: grid;
  flex-shrink: 0;
  place-items: center;
  content: "Q";
  border: var(--line-thin) solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
}

.faq-item summary::after {
  position: absolute;
  right: 20px;
  content: "+";
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 400;
}

.faq-item[open] summary {
  background: var(--color-panel-2);
}

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

.faq-answer {
  padding: 0 20px 20px 61px;
  color: var(--color-text-muted);
}

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

.term-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: var(--space-4);
}

.term-card {
  position: relative;
  min-width: 0;
  padding: 24px;
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
}

.term-card::after {
  position: absolute;
  top: 0;
  right: 0;
  width: 22px;
  height: 22px;
  content: "";
  border-bottom: var(--line-thin) solid var(--color-border);
  border-left: var(--line-thin) solid var(--color-border);
  background: var(--color-panel-2);
}

.term-code {
  margin-bottom: 16px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--tracking-wide);
}

.term-card h3 {
  margin-bottom: 10px;
  font-size: 22px;
}

.term-card p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
  gap: var(--space-4);
}

.client-card {
  position: relative;
  min-width: 0;
  padding: 26px;
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
}

.client-card.is-primary {
  border-width: var(--line-medium);
  border-color: var(--color-accent);
}

.client-card.is-archived {
  border-color: var(--color-error);
}

.client-card-head {
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.client-card-head img {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
}

.client-card-title {
  flex: 1;
  min-width: 0;
}

.client-card-title h3 {
  margin-bottom: 5px;
  overflow-wrap: anywhere;
}

.client-card p {
  color: var(--color-text-muted);
}

.client-meta {
  margin: 18px 0;
  padding: 12px 0;
  display: grid;
  gap: 7px;
  border-top: var(--line-thin) dashed var(--color-border);
  border-bottom: var(--line-thin) dashed var(--color-border);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.client-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.client-actions .button {
  min-height: 44px;
}

[data-cdnver]:empty {
  display: none;
}

.recommend-badge,
.primary-badge,
.archive-badge {
  min-height: 26px;
  max-width: 100%;
  padding: 3px 9px;
  display: inline-flex;
  align-items: center;
  overflow: hidden;
  border: var(--line-thin) solid var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.2;
}

.recommend-badge::before,
.primary-badge::before,
.archive-badge::before {
  width: 5px;
  height: 5px;
  margin-right: 7px;
  flex-shrink: 0;
  content: "";
  background: currentColor;
}

.archive-badge {
  border-color: var(--color-error);
  background: var(--color-panel);
  color: var(--color-error);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: var(--space-4);
}

.post-card {
  position: relative;
  min-width: 0;
  padding: 26px;
  display: flex;
  flex-direction: column;
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
}

.post-card::before {
  width: 46px;
  height: var(--line-heavy);
  margin-bottom: 22px;
  content: "";
  background: var(--color-accent);
}

.post-card-meta {
  margin-bottom: 13px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.post-card h3 {
  font-size: 23px;
}

.post-card p {
  color: var(--color-text-muted);
}

.post-card-link {
  margin-top: auto;
  padding-top: 16px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
}

.callout {
  position: relative;
  margin: var(--space-5) 0;
  padding: 22px 24px 22px 28px;
  border: var(--line-thin) solid var(--color-border);
  border-left: var(--line-heavy) solid var(--color-accent);
  background: var(--color-panel-2);
  color: var(--color-text-muted);
}

.callout::before {
  position: absolute;
  top: 12px;
  left: -7px;
  width: 10px;
  height: 10px;
  content: "";
  border: var(--line-thin) solid var(--color-text);
  background: var(--color-accent);
}

.callout strong,
.callout-title {
  color: var(--color-text);
}

.callout-title {
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
}

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

.callout-warn::before {
  background: var(--color-warn);
}

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

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

.download-cta-card {
  position: relative;
  margin-top: var(--space-7);
  padding: clamp(24px, 5vw, 48px);
  border: var(--line-medium) solid var(--color-accent);
  background: var(--color-panel);
}

.download-cta-card::before,
.download-cta-card::after {
  position: absolute;
  content: "";
  background: var(--color-accent);
}

.download-cta-card::before {
  top: -7px;
  left: 36px;
  width: 54px;
  height: 12px;
}

.download-cta-card::after {
  right: 20px;
  bottom: -5px;
  width: 34px;
  height: 8px;
}

.dl-fab {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 80;
  width: min(var(--fab-width), calc(100vw - 32px));
  min-height: 58px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: var(--line-medium) solid var(--color-accent);
  background: var(--color-panel);
  color: var(--color-text);
}

.dl-fab:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

.dl-fab-icon {
  width: 34px;
  height: 34px;
  display: grid;
  flex-shrink: 0;
  place-items: center;
  border: var(--line-thin) solid currentColor;
}

.dl-fab svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.dl-fab-copy {
  min-width: 0;
  display: grid;
  line-height: 1.25;
}

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

.dl-fab-copy small {
  margin-top: 4px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 9px;
}

.dl-fab:hover small {
  color: var(--color-bg);
}

.prose > .data-table {
  max-width: 100%;
  min-width: 0;
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.preview-hero {
  position: relative;
  min-height: 824px;
  overflow: hidden;
  border-bottom: var(--line-thin) solid var(--color-border);
  background: var(--color-bg);
}

.preview-hero::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: var(--line-thin);
  content: "";
  background: var(--color-accent-soft);
}

.preview-hero-shell {
  position: relative;
  min-height: 824px;
}

.preview-hero-copy {
  position: relative;
  z-index: 5;
  width: min(566px, 48%);
  padding-top: 76px;
}

.preview-hero-copy .board-kicker {
  margin-bottom: 24px;
}

.preview-hero-copy h1 {
  font-size: clamp(52px, 5vw, 64px);
}

.preview-hero-summary {
  max-width: 510px;
  margin: 28px 0 0;
  padding-left: 18px;
  border-left: var(--line-heavy) solid var(--color-accent-dark);
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 1.8;
}

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

.hero-board {
  position: absolute;
  top: 20px;
  right: 0;
  width: min(650px, 49%);
  height: 748px;
  border: var(--line-medium) solid var(--color-border);
  background: var(--color-panel);
}

.hero-board-chrome {
  height: 34px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: var(--line-thin) solid var(--color-border);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: var(--tracking-wide);
}

.hero-board-chrome span:last-child {
  color: var(--color-warn);
}

.hero-board-svg {
  width: 100%;
  height: calc(100% - 34px);
}

.pcb-base {
  fill: var(--color-panel);
}

.pcb-zone {
  fill: var(--color-panel-2);
  stroke: var(--color-border);
  stroke-width: 1;
}

.pcb-grid,
.pcb-silk,
.pcb-outline,
.pcb-trace-heavy,
.pcb-trace-thin {
  fill: none;
  vector-effect: non-scaling-stroke;
}

.pcb-grid {
  stroke: var(--color-text-faint);
  stroke-width: 1;
}

.pcb-silk {
  stroke: var(--color-text-muted);
  stroke-width: 1;
}

.pcb-outline {
  stroke: var(--color-text);
  stroke-width: 1;
}

.pcb-trace-heavy {
  stroke: var(--color-accent-dark);
  stroke-width: 8;
}

.pcb-trace-thin {
  stroke: var(--color-accent);
  stroke-width: 3;
}

.pcb-pad {
  fill: var(--color-accent);
  stroke: var(--color-text);
  stroke-width: 1;
}

.pcb-hole,
.pcb-chip {
  fill: var(--color-bg);
  stroke: var(--color-accent);
  stroke-width: 2;
}

.pcb-chip {
  stroke-width: 3;
}

.pcb-chip-inset {
  fill: var(--color-panel-2);
  stroke: var(--color-border);
}

.pcb-pin {
  fill: var(--color-accent-dark);
  stroke: var(--color-accent);
}

.pcb-connector {
  fill: var(--color-bg);
  stroke: var(--color-accent);
  stroke-width: 2;
}

.pcb-slot {
  fill: var(--color-accent-dark);
}

.pcb-title,
.pcb-label,
.pcb-small,
.pcb-platform,
.pcb-rev {
  font-family: var(--font-mono);
}

.pcb-title {
  fill: var(--color-text);
  font-size: 18px;
  font-weight: 700;
}

.pcb-label {
  fill: var(--color-text);
  font-size: 11px;
}

.pcb-small {
  fill: var(--color-text-muted);
  font-size: 8px;
  letter-spacing: 1px;
}

.pcb-platform {
  fill: var(--color-text);
  font-size: 10px;
  font-weight: 600;
}

.pcb-rev {
  fill: var(--color-warn);
  font-size: 9px;
  font-weight: 700;
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(190px, 100%), 1fr));
  gap: 12px;
}

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

.swatch-color {
  height: 72px;
  border-bottom: var(--line-thin) solid var(--color-border);
}

.swatch-copy {
  padding: 12px;
  display: grid;
  gap: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
}

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

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

.swatch-panel-2 .swatch-color {
  background: var(--color-panel-2);
}

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

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

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

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

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

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

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

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

@media (max-width: 980px) {
  .preview-hero {
    min-height: 1100px;
  }

  .preview-hero-shell {
    min-height: 1100px;
  }

  .preview-hero-copy {
    width: 100%;
    max-width: 620px;
  }

  .hero-board {
    top: 520px;
    right: var(--gutter);
    left: var(--gutter);
    width: auto;
    height: 550px;
  }
}

@media (max-width: 640px) {
  .routing-tabs {
    grid-template-columns: 1fr;
  }

  .routing-tabs .tab-list {
    display: flex;
    overflow-x: auto;
  }

  .routing-tabs .tab-list [role="tab"] {
    width: auto;
    min-width: 112px;
    min-height: 48px;
    border-right: var(--line-thin) solid var(--color-border);
  }

  .faq-item summary {
    padding-right: 45px;
  }

  .faq-answer {
    padding-left: 20px;
  }

  .client-actions {
    display: grid;
  }

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

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

  .preview-hero {
    min-height: 990px;
  }

  .preview-hero-shell {
    min-height: 990px;
  }

  .preview-hero-copy {
    padding-top: 46px;
  }

  .preview-hero-copy h1 {
    font-size: clamp(38px, 12vw, 52px);
  }

  .preview-hero-summary {
    font-size: 15px;
  }

  .hero-board {
    top: 535px;
    height: 420px;
  }
}