:root {
  --blog-gradient: linear-gradient(90deg, #7A5AF8, #FF8F6B);
  --badge-recommend-bg: #EFF1F5;
  --badge-retired-bg: #F8F9FB;
  --callout-accent-bg: #F8F9FB;
  --callout-success-bg: #F2FBF7;
  --callout-warning-bg: #FFF9EC;
  --callout-error-bg: #FFF3F4;
  --fab-shadow: 0 18px 38px -18px rgba(16, 19, 34, .55);
}

.tab-layout {
  display: grid;
  grid-template-columns: minmax(220px, 320px) minmax(0, 1fr);
  gap: 24px;
}

.tab-list {
  display: grid;
  align-content: start;
  gap: 7px;
}

[role="tab"] {
  display: flex;
  width: 100%;
  min-height: 64px;
  align-items: center;
  gap: 12px;
  padding: 11px 13px;
  border: 1px solid var(--color-transparent);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-muted);
  text-align: left;
  cursor: pointer;
}

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

[role="tab"][aria-selected="true"],
[role="tab"].is-active {
  border-color: var(--color-border);
  background: var(--color-panel);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
}

[role="tab"] svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-accent);
}

.tab-label {
  display: grid;
  min-width: 0;
  gap: 1px;
}

.tab-label strong {
  color: inherit;
}

.tab-label small {
  overflow-wrap: anywhere;
  color: var(--color-muted);
  font-size: 12px;
}

[role="tabpanel"] {
  min-width: 0;
}

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

.tab-panel {
  min-height: 330px;
  padding: clamp(20px, 4vw, 36px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
}

.fact-row,
.badge-row,
.chip-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.fact-chip,
.badge,
.tag {
  display: inline-flex;
  max-width: 100%;
  min-height: 28px;
  align-items: center;
  gap: 6px;
  overflow: hidden;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-round);
  background: var(--color-bg);
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.3;
}

.badge-primary {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-white);
}

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

.badge-success {
  border-color: var(--color-success);
  background: var(--callout-success-bg);
  color: var(--color-success);
}

.badge-warning {
  border-color: var(--color-warning);
  background: var(--callout-warning-bg);
  color: var(--color-text);
}

.badge-retired {
  border-color: var(--color-border);
  background: var(--badge-retired-bg);
  color: var(--color-muted);
}

.toc {
  position: sticky;
  top: calc(var(--header-height) + 12px);
  z-index: 10;
  display: flex;
  max-width: 100%;
  gap: 7px;
  overflow-x: auto;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}

.toc a {
  display: inline-flex;
  min-height: 38px;
  flex: 0 0 auto;
  align-items: center;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.toc a:hover {
  background: var(--color-panel);
  color: var(--color-accent-dark);
}

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

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

.faq-item summary {
  position: relative;
  display: flex;
  min-height: 62px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 2px;
  color: var(--color-text);
  font-weight: 750;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  width: 9px;
  height: 9px;
  flex-shrink: 0;
  border-right: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  content: "";
  transform: rotate(45deg);
  transition: transform var(--transition-fast);
}

.faq-item[open] summary::after {
  transform: rotate(225deg);
}

.faq-answer {
  max-width: 850px;
  padding: 0 36px 20px 2px;
  color: var(--color-muted);
}

.term-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-border);
}

.term-card {
  min-width: 0;
  padding: 24px;
  background: var(--color-bg);
  color: var(--color-text);
}

.term-card dt {
  margin-bottom: 7px;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-weight: 700;
}

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

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

.client-card {
  position: relative;
  display: grid;
  min-width: 0;
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
}

.client-card.is-featured {
  border-color: var(--color-accent);
}

.client-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.client-icon {
  width: 54px;
  height: 54px;
  flex-shrink: 0;
}

.client-meta {
  min-width: 0;
}

.client-meta h3 {
  margin-bottom: 3px;
}

.client-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

[data-version] {
  display: none;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

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

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

.post-card {
  position: relative;
  display: grid;
  min-width: 0;
  gap: 14px;
  overflow: hidden;
  padding: 25px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
}

.post-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: var(--blog-gradient);
  content: "";
}

.post-card h3 {
  margin: 0;
  font-size: 19px;
}

.post-card p {
  margin: 0;
  color: var(--color-muted);
}

.post-card time {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

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

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

.callout {
  margin: 24px 0;
  padding: 18px 20px;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: var(--callout-accent-bg);
  color: var(--color-text);
}

.callout-success {
  border-left-color: var(--color-success);
  background: var(--callout-success-bg);
  color: var(--color-text);
}

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

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

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

.download-note-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  margin-top: 42px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  color: var(--color-text);
}

.dl-fab {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 35;
  display: flex;
  max-width: calc(100vw - 36px);
  min-height: 58px;
  align-items: center;
  gap: 11px;
  padding: 10px 16px 10px 11px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--fab-shadow);
  text-decoration: none;
}

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

.dl-fab-icon {
  display: grid;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--line-hero-strong);
  color: var(--color-white);
}

.dl-fab svg {
  width: 18px;
  height: 18px;
}

.dl-fab-text {
  display: grid;
  line-height: 1.25;
}

.dl-fab-text strong {
  font-size: 13px;
}

.dl-fab-text small {
  color: var(--color-hero-text);
  font-size: 11px;
}

.shared-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-border);
}

.shared-strip > div {
  padding: 20px;
  background: var(--color-bg);
  color: var(--color-text);
}

.shared-strip strong {
  display: block;
  margin-bottom: 5px;
}

.shared-strip span {
  color: var(--color-muted);
  font-size: 13px;
}

.switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 21px;
  flex-shrink: 0;
  border-radius: var(--radius-round);
  background: var(--color-border);
}

.switch::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 15px;
  height: 15px;
  border-radius: var(--radius-round);
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
  content: "";
}

.switch.is-on {
  background: var(--color-accent);
}

.switch.is-on::after {
  left: 18px;
}

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

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

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

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

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

@media (max-width: 640px) {
  .tab-list,
  .download-grid,
  .blog-grid,
  .term-grid,
  .shared-strip {
    grid-template-columns: 1fr;
  }

  [role="tab"] {
    min-height: 56px;
  }

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

  .fact-row,
  .badge-row,
  .chip-row {
    flex-direction: row;
    flex-wrap: wrap;
  }

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

  .dl-fab {
    right: 12px;
    bottom: 12px;
  }
}