.tab-workbench {
  display: grid;
  grid-template-columns: minmax(170px, .28fr) minmax(0, 1fr);
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-border);
  gap: var(--line-thin);
}

.tab-list {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 14px;
  background: var(--color-panel);
}

.tab-list [role="tab"] {
  position: relative;
  display: flex;
  width: 100%;
  min-height: 58px;
  align-items: center;
  padding: 12px 16px;
  border: 0;
  border-bottom: var(--line-thin) solid var(--color-border);
  background: var(--color-transparent);
  color: var(--color-muted);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 18px;
  text-align: left;
}

.tab-list [role="tab"]::before {
  width: 0;
  height: var(--line-strong);
  flex-shrink: 0;
  margin-right: 0;
  background: var(--color-accent);
  content: "";
  transition: width var(--transition-fast), margin-right var(--transition-fast);
}

.tab-list [role="tab"]:hover,
.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].active {
  background: var(--color-panel-strong);
  color: var(--color-text);
}

.tab-list [role="tab"][aria-selected="true"]::before,
.tab-list [role="tab"].active::before {
  width: 24px;
  margin-right: 12px;
}

.tab-panels {
  min-width: 0;
  background: var(--color-panel-strong);
}

.tab-panel {
  min-width: 0;
  padding: clamp(24px, 5vw, 58px);
}

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

.tab-panel h3 {
  margin-bottom: 15px;
}

.tab-panel-meta {
  margin-bottom: 20px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
}

.toc {
  position: sticky;
  z-index: 20;
  top: 0;
  max-width: 100%;
  overflow-x: auto;
  border-block: var(--line-thin) solid var(--color-border);
  background: var(--color-bg);
  scrollbar-width: thin;
}

.toc-list {
  display: flex;
  width: max-content;
  min-width: 100%;
  margin: 0;
  padding: 0 var(--gutter);
  list-style: none;
}

.toc-list a {
  display: flex;
  min-height: 50px;
  align-items: center;
  padding: 8px 18px;
  border-right: var(--line-thin) solid var(--color-border);
  color: var(--color-muted);
  white-space: nowrap;
}

.toc-list li:first-child a {
  border-left: var(--line-thin) solid var(--color-border);
}

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

.faq-list {
  border-top: var(--line-thin) solid var(--color-border);
}

.faq-item {
  border-bottom: var(--line-thin) solid var(--color-border);
}

.faq-item summary {
  position: relative;
  display: flex;
  min-height: 70px;
  align-items: center;
  gap: 16px;
  padding: 16px 54px 16px 18px;
  color: var(--color-text);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  list-style: none;
}

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

.faq-item summary::before {
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border: var(--line-thin) solid var(--color-accent);
  background: var(--color-panel);
  content: "";
}

.faq-item summary::after {
  position: absolute;
  right: 20px;
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  content: "＋";
  font-family: var(--font-mono);
  line-height: 16px;
}

.faq-item[open] summary {
  background: var(--color-panel);
}

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

.faq-answer {
  padding: 0 54px 24px 42px;
  color: var(--color-muted);
}

.term-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--line-thin);
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-border);
}

.term-card {
  position: relative;
  min-width: 0;
  padding: 26px;
  background: var(--color-panel);
}

.term-card::after {
  position: absolute;
  right: 16px;
  bottom: 13px;
  color: var(--color-border);
  content: attr(data-mark);
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
}

.term-card > * {
  position: relative;
  z-index: 1;
}

.term-code {
  margin-bottom: 10px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
}

.term-card h3 {
  margin-bottom: 10px;
  font-size: 25px;
}

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

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

.client-card {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: clamp(22px, 3vw, 32px);
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel);
}

.client-card.is-primary {
  border-top: 3px solid var(--color-accent);
}

.client-card-header {
  display: flex;
  min-width: 0;
  align-items: flex-start;
  gap: 16px;
}

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

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

.client-card-title h3 {
  overflow-wrap: anywhere;
}

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

.client-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: auto;
  padding-top: 20px;
}

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

.client-version:not(:empty) {
  display: block;
  margin-top: 8px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.badge {
  display: inline-flex;
  min-height: 24px;
  max-width: 100%;
  align-items: center;
  overflow: hidden;
  padding: 3px 8px;
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-panel-strong);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .05em;
  line-height: 1.2;
  white-space: nowrap;
}

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

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

.badge--archived {
  border-color: var(--color-warn);
  color: var(--color-warn);
}

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

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-border);
  gap: var(--line-thin);
}

.post-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 320px;
  flex-direction: column;
  padding: 26px;
  background: var(--color-panel);
}

.post-card:hover {
  background: var(--color-panel-strong);
}

.post-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-bottom: 26px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.post-card h3 {
  margin-bottom: 16px;
  font-size: clamp(22px, 2.5vw, 29px);
}

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

.post-card-link {
  margin-top: auto;
  padding-top: 22px;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 12px;
}

.post-card-link::before {
  display: inline-block;
  width: 22px;
  height: var(--line-strong);
  margin-right: 10px;
  background: var(--color-accent);
  vertical-align: middle;
  content: "";
}

.callout {
  position: relative;
  margin: 1.6rem 0;
  padding: 21px 24px 21px 30px;
  border: var(--line-thin) solid var(--color-border);
  border-left: 5px solid var(--color-accent);
  background: var(--color-panel);
  color: var(--color-muted);
}

.callout::before {
  position: absolute;
  top: 12px;
  right: 13px;
  color: var(--color-border);
  content: "校";
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
}

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

.callout--warn {
  border-left-color: var(--color-warn);
}

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

.callout-title {
  display: block;
  margin-bottom: 7px;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 19px;
}

.download-cta {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  margin-top: 54px;
  padding: clamp(24px, 4vw, 42px);
  border: var(--line-strong) solid var(--color-border);
  background: var(--color-panel-strong);
}

.download-cta::before {
  position: absolute;
  top: -2px;
  left: 30px;
  width: 72px;
  height: var(--line-strong);
  background: var(--color-accent);
  content: "";
}

.download-cta p {
  margin: 9px 0 0;
  color: var(--color-muted);
}

.download-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.dl-fab {
  position: fixed;
  z-index: 80;
  right: clamp(16px, 3vw, 34px);
  bottom: clamp(16px, 3vw, 30px);
  display: inline-flex;
  min-height: 52px;
  max-width: calc(100vw - 32px);
  align-items: center;
  gap: 12px;
  padding: 9px 17px 9px 11px;
  border: var(--line-strong) solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-text);
  font-weight: 700;
}

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

.dl-fab-icon {
  display: grid;
  width: 31px;
  height: 31px;
  flex-shrink: 0;
  place-items: center;
  border: var(--line-thin) solid var(--color-text);
}

.dl-fab svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
}

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

.preview-page {
  overflow-x: clip;
}

.preview-hero {
  position: relative;
  display: grid;
  grid-template-columns: 41% 59%;
  min-height: 684px;
  overflow-x: clip;
  border-bottom: var(--line-thin) solid var(--color-border);
}

.preview-hero-copy {
  position: relative;
  z-index: 2;
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  padding: 48px 50px 76px var(--gutter);
  border-right: var(--line-thin) solid var(--color-border);
  background: var(--color-bg);
}

.preview-hero-copy::before {
  position: absolute;
  top: 0;
  right: 24px;
  bottom: 0;
  width: var(--line-thin);
  background: var(--color-border);
  content: "";
  opacity: .4;
}

.preview-edition {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 24px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.preview-edition::before {
  width: 34px;
  height: var(--line-strong);
  flex-shrink: 0;
  background: var(--color-accent);
  content: "";
}

.preview-hero h1 {
  max-width: 560px;
  font-size: clamp(59px, 5.15vw, 74px);
}

.preview-title-accent {
  display: block;
  margin-top: 9px;
  color: var(--color-accent);
}

.preview-hero-description {
  max-width: 500px;
  margin: 27px 0 0;
  color: var(--color-muted);
  font-size: 17px;
  line-height: 1.82;
}

.preview-hero-description strong {
  color: var(--color-text);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: var(--line-strong);
  text-underline-offset: 6px;
}

.preview-hero-actions {
  margin-top: 30px;
}

.preview-hero .chip-row {
  margin-top: 24px;
}

.preview-register {
  position: absolute;
  right: 48px;
  bottom: 26px;
  left: var(--gutter);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 11px;
  border-top: var(--line-thin) solid var(--color-border);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .09em;
}

.preview-register b {
  color: var(--color-accent);
}

.type-tray {
  position: relative;
  min-width: 0;
  overflow: hidden;
  background: var(--color-panel-strong);
}

.type-tray-heading {
  position: absolute;
  z-index: 4;
  top: 18px;
  left: 28px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
}

.type-tray svg {
  width: 100%;
  height: 100%;
}

.tray-panel {
  fill: var(--color-panel-strong);
}

.tray-frame-dark {
  fill: var(--color-bg);
  stroke: var(--color-border);
  stroke-width: 3;
}

.tray-frame {
  fill: var(--color-panel);
  stroke: var(--color-border);
  stroke-width: 2;
}

.tray-cell {
  fill: var(--color-panel-strong);
  stroke: var(--color-border);
  stroke-width: 2;
}

.tray-lead-depth {
  fill: var(--color-lead-dark);
  stroke: var(--color-bg);
  stroke-width: 2;
}

.tray-lead {
  fill: var(--color-lead);
  stroke: var(--color-lead-light);
  stroke-width: 1;
}

.tray-raised {
  fill: var(--color-lead-light);
  stroke: var(--color-text);
  stroke-width: 1.5;
}

.tray-term {
  fill: var(--color-text);
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  text-anchor: middle;
}

.tray-code {
  fill: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 8px;
  text-anchor: middle;
}

.tray-char {
  fill: var(--color-bg);
  font-family: var(--font-display);
  font-size: 59px;
  font-weight: 700;
  text-anchor: middle;
}

.tray-brass {
  fill: var(--color-brass);
  stroke: var(--color-brass-dark);
  stroke-width: 3;
}

.tray-brass-line {
  fill: none;
  stroke: var(--color-brass-light);
  stroke-width: 2;
}

.tray-proof {
  fill: var(--color-accent);
  stroke: var(--color-accent-dark);
}

.tray-proof-text {
  fill: var(--color-text);
  font-family: var(--font-mono);
  font-size: 10px;
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-border);
  gap: var(--line-thin);
}

.swatch {
  min-width: 0;
  background: var(--color-panel);
}

.swatch-color {
  height: 92px;
  border-bottom: var(--line-thin) solid var(--color-border);
}

.swatch-copy {
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  overflow-wrap: anywhere;
}

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

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

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

.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-muted);
}

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

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

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

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

.type-specimen {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, .45fr);
  gap: var(--line-thin);
  border: var(--line-thin) solid var(--color-border);
  background: var(--color-border);
}

.type-specimen > div {
  min-width: 0;
  padding: clamp(24px, 4vw, 46px);
  background: var(--color-panel);
}

.type-display-sample {
  margin-bottom: 20px;
  font-family: var(--font-display);
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.08;
}

.type-mono-sample {
  color: var(--color-accent);
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

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

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

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

  .preview-hero-copy {
    min-height: 620px;
    border-right: 0;
    border-bottom: var(--line-thin) solid var(--color-border);
  }

  .type-tray {
    min-height: 620px;
  }
}

@media (max-width: 720px) {
  .toc-list {
    width: 100%;
    flex-wrap: wrap;
    padding-inline: var(--gutter);
  }

  .toc-list li {
    max-width: 100%;
  }

  .toc-list a {
    white-space: normal;
  }

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

  .tab-list {
    flex-direction: row;
    overflow-x: auto;
    padding: 8px;
  }

  .tab-list [role="tab"] {
    width: auto;
    min-width: 110px;
    min-height: 48px;
    justify-content: center;
    white-space: nowrap;
  }

  .tab-list [role="tab"]::before {
    display: none;
  }

  .term-grid,
  .download-grid,
  .type-specimen {
    grid-template-columns: minmax(0, 1fr);
  }

  .download-cta {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .preview-hero-copy {
    min-height: 600px;
    padding: 45px var(--gutter) 78px;
  }

  .preview-hero-copy::before {
    display: none;
  }

  .preview-register {
    right: var(--gutter);
  }
}

@media (max-width: 480px) {
  .faq-item summary {
    padding-right: 44px;
    padding-left: 8px;
  }

  .faq-answer {
    padding-right: 16px;
    padding-left: 32px;
  }

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

  .preview-hero h1 {
    font-size: clamp(46px, 14vw, 58px);
  }

  .preview-register span:last-child {
    display: none;
  }

  .type-tray {
    min-height: 470px;
  }

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