.topic-chips,
.badge-row {
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  list-style: none;
}

.topic-chips {
  justify-content: center;
}

.chip,
.topic-chips li,
.badge,
.post-tag {
  max-width: 100%;
  padding: 6px 9px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  overflow: hidden;
  border: var(--line-thin) solid var(--color-border-soft);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  background: var(--color-panel);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.15;
  white-space: nowrap;
}

.badge::before,
.status-dot {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  background: var(--color-border);
  content: "";
}

.badge-featured {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
  background: var(--color-amber-soft);
}

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

.badge-recommended {
  border-color: var(--color-success);
  color: var(--color-success);
  background: var(--color-teal-soft);
}

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

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

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

.facts-band {
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: 1.35fr repeat(3, minmax(0, 1fr));
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
  box-shadow: 0 14px 34px var(--color-shadow-soft);
}

.fact-intro,
.fact-item {
  min-width: 0;
  min-height: 90px;
  display: flex;
  align-items: center;
}

.fact-intro {
  gap: 13px;
  padding: 16px 24px;
  color: var(--color-panel);
  background: var(--color-text);
}

.fact-intro-index {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.fact-intro strong {
  display: block;
  font-size: 13px;
  line-height: 1.2;
}

.fact-intro small {
  display: block;
  margin-top: 5px;
  color: var(--color-border-soft);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.05em;
}

.fact-item {
  gap: 12px;
  padding: 16px 21px;
  border-left: var(--line-thin) solid var(--color-border-soft);
}

.fact-symbol {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border: var(--line-thin) solid var(--color-border-soft);
  border-radius: var(--radius-pill);
  color: var(--color-success);
  background: var(--color-panel-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.fact-label {
  display: block;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fact-value {
  display: block;
  margin-top: 6px;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  overflow-wrap: anywhere;
}

.tabs {
  min-width: 0;
}

.tab-list {
  max-width: 100%;
  margin-bottom: 24px;
  padding: 5px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel-soft);
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}

.tab-list [role="tab"] {
  min-width: max-content;
  min-height: 44px;
  padding: 0 17px;
  flex: 1 0 auto;
  border: 0;
  border-radius: var(--radius-small);
  color: var(--color-text-muted);
  background: var(--color-transparent);
  font-size: 14px;
  font-weight: 680;
}

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

.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].active {
  color: var(--color-panel);
  background: var(--color-text);
  box-shadow: 0 5px 14px var(--color-shadow);
}

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

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

.toc-tabs {
  position: sticky;
  top: calc(var(--header-height) + 10px);
  z-index: 20;
  max-width: 100%;
  margin-bottom: 36px;
  padding: 7px;
  display: flex;
  gap: 5px;
  overflow-x: auto;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel);
  box-shadow: 0 8px 22px var(--color-shadow-soft);
  overscroll-behavior-inline: contain;
}

.toc-tabs a {
  min-width: max-content;
  min-height: 40px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-small);
  color: var(--color-text-muted);
  font-size: 13px;
}

.toc-tabs a:hover {
  color: var(--color-text);
  background: var(--color-panel-soft);
}

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

.faq-item {
  min-width: 0;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel);
}

.faq-item summary {
  min-height: 58px;
  padding: 15px 52px 15px 18px;
  display: flex;
  align-items: center;
  position: relative;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  right: 18px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: var(--line-thin) solid var(--color-border-soft);
  border-radius: var(--radius-pill);
  color: var(--color-success);
  content: "+";
}

.faq-item[open] summary {
  color: var(--color-accent-dark);
  background: var(--color-amber-soft);
}

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

.faq-answer {
  padding: 18px;
  border-top: var(--line-thin) solid var(--color-border-soft);
  color: var(--color-text-muted);
}

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

.glossary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.term-card {
  min-width: 0;
  padding: 23px;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-small);
  background:
    linear-gradient(var(--color-grid) var(--line-thin), var(--color-transparent) var(--line-thin)),
    var(--color-panel);
  background-size: 100% 29px;
}

.term-code {
  display: block;
  margin-bottom: 12px;
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.term-card h3 {
  font-size: 21px;
}

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

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

.download-card {
  position: relative;
  min-width: 0;
  padding: 25px;
  overflow: hidden;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel);
  box-shadow: var(--shadow-paper);
}

.download-card::after {
  position: absolute;
  right: -38px;
  bottom: -38px;
  width: 110px;
  height: 110px;
  border: var(--line-thin) dashed var(--color-border-soft);
  border-radius: var(--radius-pill);
  content: "";
}

.download-card.is-featured {
  border-top: 4px solid var(--color-accent);
}

.download-card.is-retired {
  background: var(--color-panel-soft);
}

.download-card-head {
  position: relative;
  z-index: 1;
  display: flex;
  min-width: 0;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

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

.download-card-title h3 {
  margin-bottom: 7px;
  overflow-wrap: anywhere;
}

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

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

.download-card .badge-row {
  margin-top: 14px;
}

.download-actions {
  position: relative;
  z-index: 1;
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.version-slot:empty,
[data-cdnver]:empty {
  display: none;
}

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

.post-card {
  min-width: 0;
  min-height: 270px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel);
  box-shadow: var(--shadow-paper);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.post-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.post-card-meta {
  margin-bottom: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.post-card h3 {
  font-size: clamp(21px, 2.4vw, 28px);
}

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

.post-card-link {
  margin-top: auto;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.callout {
  position: relative;
  margin-block: 24px;
  padding: 20px 22px 20px 26px;
  overflow: hidden;
  border: var(--line-thin) solid var(--color-border);
  border-left: 5px solid var(--color-success);
  border-radius: var(--radius-small);
  color: var(--color-text);
  background: var(--color-teal-soft);
}

.callout::after {
  position: absolute;
  top: 10px;
  right: 12px;
  color: var(--color-border);
  font-family: var(--font-mono);
  font-size: 10px;
  content: "NOTE";
}

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

.callout-warning::after {
  content: "CHECK";
}

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

.callout-error::after {
  content: "STOP";
}

.callout-title {
  margin-bottom: 7px;
  font-weight: 740;
}

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

.chapter-records {
  position: relative;
}

.chapter-records::before {
  position: absolute;
  top: 40px;
  bottom: 40px;
  left: 73px;
  width: var(--line-thin);
  background: var(--color-border);
  content: "";
}

.chapter-record {
  position: relative;
  display: grid;
  grid-template-columns: 145px minmax(0, 1.05fr) minmax(280px, 0.75fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: start;
  padding-top: 58px;
  padding-bottom: 58px;
}

.chapter-record:nth-child(even) {
  grid-template-columns: 145px minmax(280px, 0.75fr) minmax(0, 1.05fr);
}

.chapter-record:nth-child(even) .chapter-copy {
  grid-column: 3;
}

.chapter-record:nth-child(even) .chapter-sample {
  grid-column: 2;
  grid-row: 1;
}

.chapter-number {
  position: relative;
  z-index: 2;
  color: var(--color-border);
  background: var(--color-bg);
  font-family: var(--font-display);
  font-size: clamp(64px, 8vw, 116px);
  font-weight: 200;
  line-height: 0.8;
  letter-spacing: -0.08em;
}

.chapter-copy,
.chapter-sample {
  min-width: 0;
}

.chapter-sample {
  padding: 20px;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel);
}

.chapter-sample pre {
  margin-bottom: 0;
}

.article-end-download {
  margin-top: 54px;
  padding: clamp(24px, 5vw, 42px);
  border: var(--line-thin) solid var(--color-accent);
  border-radius: var(--radius-small);
  background:
    linear-gradient(135deg, var(--color-amber-soft), var(--color-transparent)),
    var(--color-panel);
}

.article-end-download h2 {
  font-size: clamp(27px, 4vw, 39px);
}

.article-end-download p {
  color: var(--color-text-muted);
}

.dl-fab {
  position: fixed;
  right: max(16px, var(--gutter));
  bottom: 20px;
  z-index: 45;
  min-height: 52px;
  max-width: calc(100vw - 32px);
  padding: 9px 16px 9px 10px;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  border: var(--line-thin) solid var(--color-accent);
  border-radius: var(--radius-small);
  color: var(--color-panel);
  background: var(--color-text);
  box-shadow: var(--shadow-control);
  font-size: 13px;
  font-weight: 720;
}

.dl-fab-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border-radius: var(--radius-small);
  color: var(--color-panel);
  background: var(--color-accent);
}

.dl-fab-icon svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: var(--line-medium);
  stroke-linecap: round;
  stroke-linejoin: round;
}

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

.preview-section {
  padding-top: 82px;
  padding-bottom: 82px;
  overflow-x: clip;
}

.preview-heading {
  margin-bottom: 32px;
  padding-bottom: 18px;
  border-bottom: var(--line-thin) solid var(--color-border);
}

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

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

.swatch-color {
  height: 78px;
  border-bottom: var(--line-thin) solid var(--color-border);
}

.swatch-info {
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  overflow-wrap: anywhere;
}

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

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

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

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

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

.type-specimen {
  display: grid;
  gap: 24px;
}

.type-display {
  font-family: var(--font-display);
  font-size: clamp(42px, 7vw, 84px);
  font-weight: 770;
  line-height: 1;
  letter-spacing: -0.06em;
}

.type-body {
  max-width: 720px;
  color: var(--color-text-muted);
  font-size: 18px;
}

.type-mono {
  font-family: var(--font-mono);
  font-size: 13px;
}

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

  .fact-item:nth-child(3) {
    border-left: 0;
  }

  .fact-intro,
  .fact-item {
    min-height: 80px;
  }

  .chapter-record,
  .chapter-record:nth-child(even) {
    grid-template-columns: 95px minmax(0, 1fr);
  }

  .chapter-record .chapter-copy,
  .chapter-record:nth-child(even) .chapter-copy {
    grid-column: 2;
  }

  .chapter-record .chapter-sample,
  .chapter-record:nth-child(even) .chapter-sample {
    grid-column: 2;
    grid-row: auto;
  }

  .chapter-records::before {
    left: 47px;
  }

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

@media (max-width: 640px) {
  .facts-band,
  .glossary-grid,
  .download-grid,
  .post-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .fact-item,
  .fact-item:nth-child(3) {
    border-top: var(--line-thin) solid var(--color-border-soft);
    border-left: 0;
  }

  .toc-tabs {
    margin-inline: 0;
  }

  .chapter-record,
  .chapter-record:nth-child(even) {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    padding-top: 42px;
    padding-bottom: 42px;
  }

  .chapter-record .chapter-number,
  .chapter-record .chapter-copy,
  .chapter-record .chapter-sample,
  .chapter-record:nth-child(even) .chapter-number,
  .chapter-record:nth-child(even) .chapter-copy,
  .chapter-record:nth-child(even) .chapter-sample {
    grid-column: 1;
    grid-row: auto;
  }

  .chapter-number {
    width: max-content;
    font-size: 70px;
  }

  .chapter-records::before {
    display: none;
  }

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

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