:root {
  --tab-height: 46px;
  --fab-width: 270px;
}

.tab-list,
[role="tablist"] {
  display: flex;
  max-width: 100%;
  gap: 5px;
  overflow-x: auto;
  padding: 4px;
  border-radius: var(--radius-pill);
  background: var(--color-panel-strong);
  color: var(--color-ink);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

[role="tab"] {
  display: inline-flex;
  min-width: max-content;
  min-height: var(--tab-height);
  flex: 1 0 auto;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  font-weight: 700;
}

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

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

[role="tabpanel"] {
  margin-top: 24px;
}

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

.toc-shell {
  position: relative;
}

.toc-nav {
  position: sticky;
  top: 16px;
  z-index: 10;
  display: flex;
  max-width: 100%;
  gap: 7px;
  overflow-x: auto;
  margin-bottom: 42px;
  padding: 8px;
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  color: var(--color-ink);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.toc-nav a {
  display: inline-flex;
  min-width: max-content;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 7px 14px;
  border-radius: var(--radius-md);
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 650;
}

.toc-nav a:hover,
.toc-nav a:target {
  background: var(--color-page);
  color: var(--color-brand-dark);
}

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

.faq-item {
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  color: var(--color-ink);
}

.faq-item summary {
  position: relative;
  display: flex;
  min-height: 64px;
  align-items: center;
  padding: 18px 58px 18px 22px;
  cursor: pointer;
  font-weight: 750;
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  background: var(--color-page);
  color: var(--color-brand-dark);
  font-family: var(--font-mono);
  font-size: 18px;
}

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

.faq-answer {
  padding: 0 22px 22px;
  color: var(--color-muted);
}

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

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

.term-card {
  position: relative;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  color: var(--color-ink);
}

.term-card::before {
  content: "";
  position: absolute;
  top: 24px;
  left: 0;
  width: 4px;
  height: 30px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-mist);
}

.term-card h3 {
  margin-bottom: 8px;
  font-size: 18px;
}

.term-card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.term-meta {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--color-brand-dark);
  font: 12px/1.4 var(--font-mono);
}

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

.download-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: 26px;
  border-radius: var(--radius-xl);
  background: var(--color-page);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.download-card__head {
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.download-card__icon {
  width: 54px;
  height: 54px;
  flex: 0 0 auto;
}

.download-card__title {
  margin: 0;
  font-size: 20px;
}

.download-card__summary {
  margin: 15px 0 20px;
  color: var(--color-muted);
}

.download-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: auto;
}

[data-ver] {
  display: none;
}

[data-ver].has-version {
  display: inline-flex;
}

.badge-primary,
.badge-recommended,
.badge-archived,
.badge-success,
.badge-warning,
.badge-error {
  display: inline-flex;
  max-width: 100%;
  min-height: 27px;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 4px 9px;
  border-radius: var(--radius-pill);
  font-size: 11.5px;
  font-weight: 750;
  line-height: 1.25;
}

.badge-primary {
  background: var(--color-brand);
  color: var(--color-inverse);
}

.badge-recommended {
  background: var(--color-brand-soft);
  color: var(--color-brand-dark);
}

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

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

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

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

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.post-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: 24px;
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  color: var(--color-ink);
  transition: transform .25s ease, box-shadow .25s ease;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.post-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--color-muted);
  font: 12px/1.5 var(--font-mono);
}

.post-card h3 {
  font-size: 18px;
}

.post-card p {
  margin-bottom: 20px;
  color: var(--color-muted);
  font-size: 14px;
}

.post-card__link {
  margin-top: auto;
  color: var(--color-brand-dark);
  font-weight: 750;
}

.callout {
  position: relative;
  margin: 24px 0;
  padding: 20px 22px 20px 28px;
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  color: var(--color-ink);
}

.callout::before {
  content: "";
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: 0;
  width: 4px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--color-brand);
}

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

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

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

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

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

.dl-fab {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 70;
  display: flex;
  width: min(var(--fab-width), calc(100vw - 36px));
  min-height: 68px;
  align-items: center;
  gap: 13px;
  padding: 12px 15px;
  border-radius: var(--radius-lg);
  background: var(--color-brand);
  color: var(--color-inverse);
  box-shadow: var(--shadow-window);
}

.dl-fab:hover {
  background: var(--color-brand-dark);
  color: var(--color-inverse);
}

.dl-fab__icon {
  display: inline-flex;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-page);
  color: var(--color-brand-dark);
}

.dl-fab__icon svg {
  width: 21px;
  height: 21px;
}

.dl-fab__text {
  display: grid;
  line-height: 1.35;
}

.dl-fab__text strong {
  color: var(--color-inverse);
  font-size: 14px;
}

.dl-fab__text span {
  color: var(--color-inverse);
  font-size: 12px;
}

.end-download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 52px;
  padding: 26px;
  border-radius: var(--radius-xl);
  background: var(--color-panel-strong);
  color: var(--color-ink);
}

.end-download-card__copy h2,
.end-download-card__copy h3 {
  margin-bottom: 7px;
}

.end-download-card__copy p {
  margin: 0;
  color: var(--color-muted);
}

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

.preview-swatch-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.preview-swatch {
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  color: var(--color-ink);
}

.preview-swatch__color {
  height: 94px;
  background: var(--swatch, var(--color-panel));
}

.preview-swatch__label {
  padding: 12px 14px;
  font: 12px/1.5 var(--font-mono);
}

.swatch-page { --swatch: var(--color-page); }
.swatch-panel { --swatch: var(--color-panel); }
.swatch-panel-strong { --swatch: var(--color-panel-strong); }
.swatch-line { --swatch: var(--color-line); }
.swatch-brand { --swatch: var(--color-brand); }
.swatch-brand-dark { --swatch: var(--color-brand-dark); }
.swatch-mist { --swatch: var(--color-mist); }
.swatch-ink { --swatch: var(--color-ink); }
.swatch-muted { --swatch: var(--color-muted); }
.swatch-success { --swatch: var(--color-success); }
.swatch-warning { --swatch: var(--color-warning); }
.swatch-error { --swatch: var(--color-error); }

@media (max-width: 900px) {
  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 700px) {
  .glossary-grid,
  .download-grid,
  .post-grid {
    grid-template-columns: 1fr;
  }

  .toc-nav {
    top: 8px;
  }

  .end-download-card {
    align-items: stretch;
    flex-direction: column;
  }

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

@media (max-width: 480px) {
  [role="tab"] {
    padding-inline: 14px;
  }

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

  .dl-fab {
    right: 12px;
    bottom: 12px;
    width: calc(100vw - 24px);
  }
}