:root {
  --color-tab-hover: #F2F7F5;
  --color-warning-soft: #FFF4DB;
  --color-danger-soft: #FDECEC;
  --color-info-soft: #EAF3FA;
  --color-info-ink: #285A78;
  --color-warning-ink: #825000;
  --color-danger-ink: #9D2929;
  --color-stopped: #6C7672;
  --color-code-mark: #DDF0E6;
  --color-table-stripe: #FAFCFB;
}

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

.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  width: fit-content;
  max-width: 100%;
  padding: 6px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-ink);
}

.tab-list [role="tab"] {
  min-height: 42px;
  padding: 8px 18px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-ink-muted);
  cursor: pointer;
  font-weight: 650;
}

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

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

[role="tabpanel"] {
  min-width: 0;
  margin-top: 26px;
}

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

.toc {
  position: sticky;
  top: 18px;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 100%;
  padding: 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-float);
}

.toc a {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  padding: 7px 13px;
  border-radius: var(--radius-pill);
  color: var(--color-ink-muted);
  font-size: 13px;
  font-weight: 650;
}

.toc a:hover,
.toc a.is-current {
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  overflow: clip;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  color: var(--color-ink);
}

.faq-item summary {
  position: relative;
  display: block;
  min-height: 58px;
  padding: 17px 54px 17px 20px;
  cursor: pointer;
  font-weight: 750;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 21px;
  color: var(--color-accent-deep);
  content: "+";
  font-size: 22px;
  line-height: 1;
  transform: translateY(-50%);
}

.faq-item[open] summary {
  border-bottom: 1px solid var(--color-line-soft);
}

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

.faq-answer {
  padding: 18px 20px 20px;
  color: var(--color-ink-muted);
}

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

.term-card {
  min-width: 0;
  padding: 24px;
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.term-card h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.term-kind {
  display: inline-flex;
  max-width: 100%;
  margin-bottom: 14px;
  padding: 5px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
  font-size: 12px;
  font-weight: 750;
  overflow-wrap: anywhere;
}

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

.download-card {
  min-width: 0;
  padding: 28px;
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

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

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

.download-card-title {
  min-width: 0;
}

.download-card-title h2,
.download-card-title h3 {
  margin-bottom: 5px;
}

.download-card-meta {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 13px;
  overflow-wrap: anywhere;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 100%;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 750;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.badge-featured {
  background: var(--color-accent);
  color: var(--color-panel);
}

.badge-recommended {
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
}

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

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

.article-card {
  display: flex;
  min-width: 0;
  height: 100%;
  flex-direction: column;
  padding: 27px;
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-fast);
}

.article-card:hover {
  transform: translateY(-3px);
}

.article-card-tag {
  align-self: flex-start;
  margin-bottom: 16px;
}

.article-card h3 {
  margin-bottom: 12px;
  font-size: 21px;
}

.article-card p {
  color: var(--color-ink-muted);
}

.article-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 15px;
  margin-top: auto;
  padding-top: 18px;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.callout {
  position: relative;
  min-width: 0;
  padding: 20px 22px 20px 25px;
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-medium) var(--radius-medium) 0;
  background: var(--color-accent-soft);
  color: var(--color-ink);
}

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

.callout-title {
  display: block;
  margin-bottom: 6px;
  color: var(--color-accent-deep);
  font-weight: 800;
}

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

.callout-info .callout-title {
  color: var(--color-info-ink);
}

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

.callout-warning .callout-title {
  color: var(--color-warning-ink);
}

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

.callout-danger .callout-title {
  color: var(--color-danger-ink);
}

.data-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  color: var(--color-ink);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  min-width: 680px;
  background: var(--color-panel);
  color: var(--color-ink);
}

.data-table tbody tr:nth-child(even) {
  background: var(--color-table-stripe);
  color: var(--color-ink);
}

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

.prose > * {
  max-width: 100%;
}

.prose > h2 {
  margin-top: 2.2em;
  margin-bottom: .75em;
}

.prose > h3 {
  margin-top: 1.8em;
  margin-bottom: .65em;
}

.prose a {
  color: var(--color-accent-deep);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-wash);
  text-underline-offset: 3px;
}

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

.prose li + li {
  margin-top: .45em;
}

.prose mark {
  padding-inline: 3px;
  background: var(--color-code-mark);
  color: var(--color-ink);
}

.download-guide-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-top: 54px;
  padding: 28px;
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.download-guide-card h2,
.download-guide-card h3 {
  margin-bottom: 7px;
}

.download-guide-card p {
  margin: 0;
  color: var(--color-ink-muted);
}

.dl-fab {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 50;
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  gap: 8px;
  max-width: calc(100vw - 32px);
  padding: 12px 21px;
  border: 1px solid var(--color-accent-deep);
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-deep));
  color: var(--color-panel);
  box-shadow: var(--shadow-fab);
  font-size: 14px;
  font-weight: 750;
}

.dl-fab svg {
  width: 16px;
  height: 16px;
}

.qa-feature-card {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, 1.1fr);
  gap: 58px;
  align-items: center;
  padding: 48px;
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.qa-feature-card.is-reversed .qa-feature-copy {
  order: 2;
}

.qa-feature-card.is-reversed .qa-feature-demo {
  order: 1;
}

.qa-feature-copy p {
  color: var(--color-ink-muted);
}

.qa-feature-demo {
  min-width: 0;
  padding: 22px;
  border-radius: var(--radius-medium);
  background: var(--color-panel-muted);
  color: var(--color-ink);
}

.mini-setting {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px solid var(--color-line);
}

.mini-setting:last-child {
  border-bottom: 0;
}

@media (max-width: 860px) {
  .qa-feature-card {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

  .qa-feature-card.is-reversed .qa-feature-copy,
  .qa-feature-card.is-reversed .qa-feature-demo {
    order: initial;
  }
}

@media (max-width: 640px) {
  .tab-list {
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    border-radius: var(--radius-medium);
    -webkit-overflow-scrolling: touch;
  }

  .tab-list [role="tab"] {
    flex-shrink: 0;
  }

  .toc {
    top: 8px;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .toc a {
    flex-shrink: 0;
  }

  .download-card,
  .article-card,
  .term-card {
    padding: 21px;
  }

  .download-card-head {
    align-items: flex-start;
  }

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

  .download-guide-card {
    align-items: stretch;
    flex-direction: column;
    padding: 22px;
  }

  .download-guide-card .button {
    width: 100%;
  }

  .qa-feature-card {
    padding: 24px;
  }

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