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

.tab-list {
  display: flex;
  gap: 6px;
  max-width: 100%;
  margin: 0 0 24px;
  padding: 6px;
  overflow-x: auto;
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-black-alpha);
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}

.tab-list [role="tab"] {
  min-height: 44px;
  padding: 10px 18px;
  flex: 0 0 auto;
  border: var(--line-thin) solid var(--color-transparent);
  border-radius: var(--radius-none);
  color: var(--color-text-muted);
  background: var(--color-transparent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
}

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

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

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

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

.toc-tabs {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: flex;
  gap: 7px;
  max-width: 100%;
  margin: 0 0 42px;
  padding: 8px;
  overflow-x: auto;
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel-2);
  box-shadow: var(--shadow-stage);
  overscroll-behavior-inline: contain;
}

.toc-tabs a {
  min-height: 42px;
  padding: 9px 14px;
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.toc-tabs a:hover {
  color: var(--color-bg);
  background: var(--color-accent);
}

.faq-list {
  display: grid;
  gap: 10px;
}

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

.faq-item[open] {
  border-color: var(--color-accent-dark);
}

.faq-item summary {
  min-height: 60px;
  padding: 16px 58px 16px 20px;
  position: relative;
  display: flex;
  align-items: center;
  cursor: pointer;
  color: var(--color-text);
  font-weight: 750;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 20px;
  width: 18px;
  height: 18px;
  transform: translateY(-50%);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  content: "+";
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 1.25rem;
}

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

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

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

.term-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 15px;
}

.term-card {
  position: relative;
  min-width: 0;
  padding: 24px;
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.term-card::after {
  position: absolute;
  top: 0;
  right: 0;
  width: 18px;
  height: 18px;
  content: "";
  background: var(--color-accent-dark);
  clip-path: polygon(0 0, 100% 100%, 100% 0);
}

.term-code {
  margin-bottom: 10px;
  display: block;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  overflow-wrap: anywhere;
}

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

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

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

.download-card {
  position: relative;
  min-width: 0;
  padding: 26px;
  border: var(--line-thin) solid var(--color-border);
  background:
    linear-gradient(135deg, var(--color-silver-alpha), var(--color-transparent) 34%),
    var(--color-panel);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

.download-card.is-featured {
  border-color: var(--color-accent);
  background:
    linear-gradient(135deg, var(--color-accent-soft), var(--color-transparent) 42%),
    var(--color-panel-2);
}

.download-card.is-archived {
  border-color: var(--color-metal-alpha);
}

.download-card-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.download-card-head > * {
  min-width: 0;
}

.client-icon {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
}

.download-card h3 {
  margin-bottom: 7px;
}

.download-meta {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  overflow-wrap: anywhere;
}

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

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 22px;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.badge,
.tag,
.status-chip {
  max-width: 100%;
  min-height: 25px;
  padding: 4px 9px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  overflow: hidden;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  background: var(--color-black-alpha);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  line-height: 1.2;
  white-space: nowrap;
}

.badge::before,
.status-chip::before {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  content: "";
  border-radius: var(--radius-pill);
  background: var(--color-border);
}

.badge-featured,
.badge-recommended {
  border-color: var(--color-accent-dark);
  color: var(--color-bg);
  background: var(--color-accent);
}

.badge-featured::before,
.badge-recommended::before {
  background: var(--color-bg);
}

.badge-archived {
  border-color: var(--color-error);
  color: var(--color-error);
  background: var(--color-error-soft);
}

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

.badge-warn {
  border-color: var(--color-warn);
  color: var(--color-warn);
  background: var(--color-warn-soft);
}

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

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

.article-card {
  position: relative;
  min-width: 0;
  padding: 25px;
  display: flex;
  flex-direction: column;
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
  clip-path: polygon(0 0, calc(100% - 15px) 0, 100% 15px, 100% 100%, 0 100%);
  transition:
    transform var(--transition-fast) var(--ease-mechanical),
    background var(--transition-fast) var(--ease-mechanical);
}

.article-card:hover {
  transform: translateY(-4px);
  background: var(--color-panel-2);
}

.article-card-meta {
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.article-card h3 {
  margin-bottom: 13px;
}

.article-card p {
  margin-bottom: 22px;
  color: var(--color-text-muted);
}

.article-card-link {
  margin-top: auto;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
}

.callout {
  position: relative;
  margin: 28px 0;
  padding: 20px 22px 20px 28px;
  overflow: hidden;
  border: var(--line-thin) solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  background: var(--color-panel-2);
  color: var(--color-text-muted);
}

.callout::after {
  position: absolute;
  top: -32px;
  right: -28px;
  width: 84px;
  height: 84px;
  content: "";
  border: var(--line-thin) solid var(--color-accent-alpha);
  transform: rotate(45deg);
}

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

.callout-title {
  margin-bottom: 7px;
  display: block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

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

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

.dl-fab {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 50;
  max-width: min(310px, calc(100vw - 32px));
  min-height: 58px;
  padding: 11px 18px 11px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: var(--line-medium) solid var(--color-accent);
  color: var(--color-bg);
  background: var(--color-accent);
  box-shadow: var(--shadow-stage);
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
  font-weight: 800;
}

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

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

.dl-fab-icon svg {
  width: 19px;
  height: 19px;
}

.prose {
  min-width: 0;
  color: var(--color-text-muted);
}

.prose h2,
.prose h3 {
  color: var(--color-text);
}

.prose h2 {
  margin-top: 2.5em;
  padding-bottom: 13px;
  border-bottom: var(--line-thin) solid var(--color-border);
}

.prose h3 {
  margin-top: 2em;
}

.prose a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

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

.prose li::marker {
  color: var(--color-accent);
}

.end-download-card {
  margin-top: 60px;
  padding: clamp(24px, 5vw, 42px);
  border: var(--line-medium) solid var(--color-accent);
  background:
    linear-gradient(110deg, var(--color-accent-soft), var(--color-transparent) 55%),
    var(--color-panel);
  clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
}

.end-download-card h2,
.end-download-card h3 {
  margin-bottom: 12px;
}

.end-download-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.spec-table td:first-child {
  width: 28%;
  color: var(--color-text);
  font-family: var(--font-mono);
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

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

.swatch-color {
  height: 82px;
  border-bottom: var(--line-thin) solid var(--color-border);
}

.swatch-body {
  padding: 12px;
}

.swatch-body code {
  padding: 0;
  border: 0;
  background: var(--color-transparent);
}

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

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

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

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

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

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

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

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

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

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

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

.preview-section-head {
  max-width: 760px;
  margin-bottom: 40px;
}

.preview-section-head p {
  color: var(--color-text-muted);
}

.type-sample-display {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.type-sample-body {
  max-width: 700px;
  color: var(--color-text-muted);
}

.type-sample-mono {
  color: var(--color-accent);
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

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

@media (max-width: 900px) {
  .article-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

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

  .toc-tabs {
    top: 6px;
  }

  .download-card,
  .term-card,
  .article-card {
    padding: 20px;
  }

  .download-actions,
  .end-download-actions {
    flex-direction: column;
  }

  .download-actions .btn,
  .end-download-actions .btn {
    width: 100%;
  }

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

  .spec-table {
    min-width: 620px;
  }
}