:root {
  --component-rule: #E3EAE7;
  --component-white: #FFFFFF;
  --component-soft: #EFF4F2;
  --component-accent: #0C9B62;
  --component-accent-dark: #087A4C;
  --component-text: #1B2420;
  --component-muted: #5B6862;
  --component-warning: #D97706;
  --component-error: #DC2626;
  --component-accent-soft: rgba(12, 155, 98, 0.10);
  --component-accent-line: rgba(12, 155, 98, 0.28);
  --component-warning-soft: rgba(217, 119, 6, 0.10);
  --component-warning-line: rgba(217, 119, 6, 0.28);
  --component-error-soft: rgba(220, 38, 38, 0.08);
  --component-error-line: rgba(220, 38, 38, 0.24);
  --component-shadow: rgba(27, 36, 32, 0.14);
}

/* Tabs */
.tabs {
  min-width: 0;
}

.tab-list {
  display: flex;
  max-width: 100%;
  gap: 5px;
  padding: 5px;
  overflow-x: auto;
  border: 1px solid var(--component-rule);
  border-radius: var(--radius-md);
  background: var(--component-soft);
  color: var(--component-text);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.tab-list [role="tab"] {
  min-height: 44px;
  flex: 0 0 auto;
  padding: 9px 17px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--component-muted);
  cursor: pointer;
  font-weight: 700;
  white-space: nowrap;
}

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

.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].is-active {
  border-color: var(--component-rule);
  background: var(--component-white);
  color: var(--component-accent-dark);
  box-shadow: var(--shadow-chip);
}

.tab-panel {
  padding-top: 26px;
}

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

/* Long-page navigation */
.toc-shell {
  position: sticky;
  z-index: 20;
  top: calc(var(--nav-height) + 10px);
  margin-bottom: 34px;
}

.toc-shell.is-static {
  position: static;
}

.toc-tabs {
  display: flex;
  max-width: 100%;
  gap: 7px;
  padding: 7px;
  overflow-x: auto;
  border: 1px solid var(--component-rule);
  border-radius: var(--radius-md);
  background: var(--component-white);
  color: var(--component-text);
  box-shadow: var(--shadow-chip);
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.toc-tabs a {
  min-height: 40px;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  color: var(--component-muted);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
}

.toc-tabs a:hover,
.toc-tabs a[aria-current="true"] {
  background: var(--component-soft);
  color: var(--component-accent-dark);
}

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

.faq-item {
  overflow: clip;
  border: 1px solid var(--component-rule);
  border-radius: var(--radius-md);
  background: var(--component-white);
  color: var(--component-text);
}

.faq-item summary {
  position: relative;
  min-height: 56px;
  padding: 17px 54px 17px 20px;
  cursor: pointer;
  color: var(--component-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: 24px;
  height: 24px;
  border: 1px solid var(--component-rule);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--component-accent-dark);
  content: "+";
  line-height: 1;
  transform: translateY(-50%);
}

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

.faq-answer {
  padding: 0 20px 18px;
  border-top: 1px solid var(--component-rule);
  color: var(--component-muted);
}

.faq-answer > :first-child {
  margin-top: 16px;
}

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

/* Badges */
.badge {
  display: inline-flex;
  max-width: 100%;
  min-height: 26px;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  overflow: hidden;
  border: 1px solid var(--component-rule);
  border-radius: var(--radius-pill);
  background: var(--component-soft);
  color: var(--component-text);
  font-size: 12px;
  font-weight: 750;
  line-height: 1.35;
}

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

.badge-warning {
  border-color: var(--component-warning-line);
  background: var(--component-warning-soft);
  color: var(--component-warning);
}

.badge-retired {
  border-color: var(--component-error-line);
  background: var(--component-error-soft);
  color: var(--component-error);
}

.tag {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  padding: 5px 10px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: var(--component-soft);
  color: var(--component-muted);
  font-size: 12px;
  font-weight: 700;
}

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

.term-card {
  padding: 24px;
  border: 1px solid var(--component-rule);
  border-radius: var(--radius-lg);
  background: var(--component-white);
  color: var(--component-text);
}

.term-card dt {
  margin-bottom: 10px;
  color: var(--component-text);
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
}

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

.term-code {
  display: inline-block;
  margin-top: 14px;
  padding: 5px 9px;
  border-radius: var(--radius-sm);
  background: var(--component-soft);
  color: var(--component-text);
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-wrap: anywhere;
}

/* Download cards */
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.client-card {
  position: relative;
  padding: 25px;
  border: 1px solid var(--component-rule);
  border-radius: var(--radius-lg);
  background: var(--component-white);
  color: var(--component-text);
  box-shadow: 0 10px 30px -18px var(--component-shadow);
}

.client-card.is-featured {
  border-color: var(--component-accent-line);
  box-shadow: 0 16px 36px -20px var(--component-accent);
}

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

.client-card-icon {
  width: 52px;
  height: 52px;
  flex: 0 0 auto;
}

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

.client-card-title h3 {
  margin-bottom: 5px;
  font-size: 20px;
}

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

.client-card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 13px;
}

.client-card-body {
  margin-top: 19px;
  color: var(--component-muted);
}

.client-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.version-slot:empty {
  display: none;
}

/* Blog cards */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.post-card {
  height: 100%;
  padding: 24px;
  border: 1px solid var(--component-rule);
  border-radius: var(--radius-lg);
  background: var(--component-white);
  color: var(--component-text);
  box-shadow: 0 10px 30px -20px var(--component-shadow);
  display: flex;
  flex-direction: column;
}

.post-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-bottom: 15px;
  color: var(--component-muted);
  font-size: 12px;
}

.post-card h3 {
  margin-bottom: 12px;
  font-size: 20px;
  line-height: 1.35;
}

.post-card h3 a {
  color: var(--component-text);
  text-decoration: none;
}

.post-card h3 a:hover {
  color: var(--component-accent-dark);
}

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

.post-card-link {
  margin-top: auto;
  font-weight: 750;
  text-decoration: none;
}

/* Callouts */
.callout {
  margin-block: 24px;
  padding: 18px 20px;
  border: 1px solid var(--component-accent-line);
  border-left: 4px solid var(--component-accent);
  border-radius: var(--radius-md);
  background: var(--component-accent-soft);
  color: var(--component-text);
}

.callout strong,
.callout-title {
  display: block;
  margin-bottom: 5px;
  color: var(--component-text);
  font-weight: 800;
}

.callout p,
.callout li {
  color: var(--component-muted);
}

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

.callout-warning {
  border-color: var(--component-warning-line);
  border-left-color: var(--component-warning);
  background: var(--component-warning-soft);
  color: var(--component-text);
}

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

/* End-of-article download card */
.article-download {
  margin-top: 46px;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--component-accent-line);
  border-radius: var(--radius-lg);
  background: var(--component-soft);
  color: var(--component-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.article-download-copy h2,
.article-download-copy h3 {
  margin-bottom: 7px;
  font-size: 23px;
}

.article-download-copy p {
  margin: 0;
  color: var(--component-muted);
}

/* Fixed download link */
.dl-fab {
  position: fixed;
  z-index: 70;
  right: 28px;
  bottom: 28px;
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  gap: 9px;
  padding: 12px 21px;
  border-radius: var(--radius-pill);
  background: var(--component-accent);
  color: var(--component-white);
  box-shadow: var(--shadow-fab);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
}

.dl-fab:hover {
  background: var(--component-accent-dark);
  color: var(--component-white);
}

.dl-fab svg {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
}

/* Feature rows */
.feature-stack {
  display: grid;
}

.feature-row {
  padding-top: clamp(58px, 8vw, 96px);
  padding-bottom: clamp(58px, 8vw, 96px);
  border-bottom: 1px solid var(--component-rule);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: clamp(38px, 7vw, 90px);
}

.feature-row:nth-child(even) .feature-copy {
  order: 2;
}

.feature-row:nth-child(even) .feature-visual {
  order: 1;
}

.feature-copy h2 {
  max-width: 12em;
}

.feature-copy p {
  max-width: 38em;
  color: var(--component-muted);
}

.feature-visual {
  min-height: 310px;
  padding: clamp(20px, 4vw, 36px);
  border: 1px solid var(--component-rule);
  border-radius: var(--radius-xl);
  background: var(--component-white);
  color: var(--component-text);
  box-shadow: var(--shadow-soft);
  display: grid;
  align-content: center;
}

/* Bare table protection for generated articles */
.prose > .data-table {
  display: block;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 840px) {
  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-row {
    grid-template-columns: 1fr;
  }

  .feature-row:nth-child(even) .feature-copy,
  .feature-row:nth-child(even) .feature-visual {
    order: initial;
  }
}

@media (max-width: 640px) {
  .toc-shell {
    top: calc(var(--nav-height) + 6px);
  }

  .glossary-grid,
  .download-grid,
  .post-grid {
    grid-template-columns: 1fr;
  }

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

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

  .article-download .button {
    width: 100%;
  }

  .dl-fab {
    right: 16px;
    bottom: 16px;
    max-width: calc(100vw - 32px);
    padding-inline: 17px;
  }

  .feature-visual {
    min-height: 260px;
  }
}