.tabs {
  min-width: 0;
}

.tab-list {
  display: flex;
  max-width: 100%;
  gap: 6px;
  padding: 6px;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  color: var(--color-ink);
  background: var(--color-panel);
  scrollbar-width: thin;
}

.tab-list [role="tab"] {
  min-height: 42px;
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-small);
  color: var(--color-ink-muted);
  background: transparent;
  font-weight: 750;
  cursor: pointer;
}

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

.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].is-active {
  border-color: var(--color-line);
  color: var(--color-brand);
  background: var(--color-page);
  box-shadow: var(--shadow-card);
}

.tab-panel {
  padding-top: 28px;
}

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

.toc {
  position: sticky;
  top: 16px;
  z-index: 5;
  display: flex;
  max-width: 100%;
  flex-wrap: wrap;
  gap: 6px;
  padding: 7px;
  overflow-x: visible;
  overscroll-behavior-inline: contain;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  color: var(--color-ink);
  background: var(--color-page);
  box-shadow: var(--shadow-card);
}

.toc a {
  min-height: 40px;
  flex: 0 0 auto;
  padding: 7px 12px;
  border-radius: var(--radius-small);
  color: var(--color-ink-muted);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
}

.toc a:hover,
.toc a[aria-current="true"] {
  color: var(--color-brand);
  background: var(--color-panel);
}

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

.faq-item {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  color: var(--color-ink);
  background: var(--color-page);
  box-shadow: var(--shadow-card);
}

.faq-item summary {
  position: relative;
  padding: 18px 52px 18px 20px;
  color: var(--color-ink);
  font-weight: 780;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 20px;
  width: 22px;
  height: 22px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  color: var(--color-brand);
  background: var(--color-panel);
  content: "+";
  font-family: var(--font-mono);
  line-height: 20px;
  text-align: center;
  transform: translateY(-50%);
}

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

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

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

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

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

.term-card {
  padding: 22px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  color: var(--color-ink);
  background: var(--color-page);
  box-shadow: var(--shadow-card);
}

.term-card dt {
  margin-bottom: 8px;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 820;
}

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

.download-grid {
  display: grid;
  gap: 18px;
}

.client-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  color: var(--color-ink);
  background: var(--color-page);
  box-shadow: var(--shadow-card);
}

.client-card-head {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 14px;
}

.client-card-head img {
  width: 54px;
  height: 54px;
  flex: 0 0 auto;
}

.client-card h3 {
  margin-bottom: 4px;
}

.client-card-meta {
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.client-actions {
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  justify-content: flex-end;
  gap: 10px;
}

.client-description {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--color-ink-muted);
}

.badge-recommended,
.badge-primary,
.badge-retired {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  padding: 5px 9px;
  border-radius: var(--radius-pill);
  font-size: 0.76rem;
  font-weight: 800;
  line-height: 1.2;
}

.badge-primary {
  border: 1px solid var(--color-brand);
  color: var(--color-white);
  background: var(--color-brand);
}

.badge-recommended {
  border: 1px solid var(--color-brand);
  color: var(--color-brand-deep);
  background: var(--color-page);
}

.badge-retired {
  border: 1px solid var(--color-line);
  color: var(--color-ink-muted);
  background: var(--color-panel-strong);
}

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

.article-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  color: var(--color-ink);
  background: var(--color-page);
  box-shadow: var(--shadow-card);
}

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

.article-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-bottom: 15px;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.article-card h3 {
  font-size: 1.12rem;
}

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

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

.article-card-link {
  margin-top: auto;
  color: var(--color-brand);
  font-weight: 750;
  text-decoration: none;
}

.callout {
  position: relative;
  margin: 1.6rem 0;
  padding: 18px 20px 18px 48px;
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-brand);
  border-radius: var(--radius-small);
  color: var(--color-ink);
  background: var(--color-panel);
}

.callout::before {
  position: absolute;
  top: 18px;
  left: 18px;
  color: var(--color-brand);
  content: "i";
  font-family: var(--font-mono);
  font-weight: 800;
}

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

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

.callout-warning::before {
  color: var(--color-caution);
  content: "!";
}

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

.callout-success::before {
  color: var(--color-positive);
  content: "✓";
}

.dl-fab {
  position: fixed;
  right: max(16px, var(--gutter));
  bottom: max(16px, var(--gutter));
  z-index: 30;
  display: flex;
  width: min(310px, calc(100vw - 32px));
  min-height: 66px;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--color-brand);
  border-radius: var(--radius-medium);
  color: var(--color-white);
  background: var(--color-brand);
  box-shadow: var(--shadow-float);
  text-decoration: none;
}

.dl-fab:hover {
  color: var(--color-white);
  background: var(--color-brand-deep);
}

.dl-fab-icon {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--color-white);
  border-radius: var(--radius-small);
  color: var(--color-white);
}

.dl-fab-icon svg {
  width: 19px;
  height: 19px;
}

.dl-fab-copy {
  min-width: 0;
}

.dl-fab-copy strong,
.dl-fab-copy span {
  display: block;
  color: var(--color-white);
}

.dl-fab-copy span {
  font-size: 0.8rem;
  opacity: 0.9;
}

.download-guide-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  margin-top: 48px;
  padding: 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  color: var(--color-ink);
  background: var(--color-panel);
}

.download-guide-card p {
  margin: 6px 0 0;
  color: var(--color-ink-muted);
}

.preview-hero {
  position: relative;
  overflow-x: clip;
}

.preview-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 500px) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
  padding-top: 78px;
  padding-bottom: 92px;
}

.hero-eyebrow {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  padding: 6px 14px 6px 8px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  color: var(--color-ink-muted);
  background: var(--color-panel);
  font-size: 0.82rem;
  font-weight: 650;
}

.hero-eyebrow-mark {
  display: grid;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: var(--radius-pill);
  color: var(--color-white);
  background: var(--color-brand);
  font-size: 0.68rem;
  font-weight: 900;
}

.preview-hero h1 {
  margin-bottom: 20px;
}

.hero-accent {
  color: var(--color-brand);
}

.hero-copy {
  max-width: 470px;
  color: var(--color-ink-muted);
  font-size: 1.02rem;
}

.hero-actions,
.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin-top: 28px;
}

.hero-facts {
  margin-top: 28px;
}

.device-stage {
  position: relative;
  height: 600px;
  min-width: 0;
}

.device-window {
  position: absolute;
  top: 8px;
  left: 34px;
  width: 760px;
  overflow: hidden;
  border: 1px solid var(--color-device-line);
  border-radius: var(--radius-medium);
  color: var(--color-device-ink);
  background: var(--color-device);
  box-shadow: var(--shadow-device);
  transform: rotate(-2deg);
}

.device-titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--color-device-line);
  color: var(--color-device-muted);
  background: var(--color-device-panel);
}

.window-dot {
  width: 11px;
  height: 11px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
}

.window-dot-danger {
  background: var(--color-danger);
}

.window-dot-caution {
  background: var(--color-caution);
}

.window-dot-positive {
  background: var(--color-positive);
}

.device-title {
  margin-left: 10px;
  color: var(--color-device-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.device-body {
  display: grid;
  grid-template-columns: 186px minmax(0, 1fr);
}

.device-sidebar {
  display: flex;
  min-height: 420px;
  flex-direction: column;
  gap: 4px;
  padding: 16px 10px;
  border-right: 1px solid var(--color-device-line);
  color: var(--color-device-muted);
  background: var(--color-device);
}

.device-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-small);
  color: var(--color-device-muted);
  font-size: 0.84rem;
  font-weight: 650;
}

.device-nav-item svg {
  width: 15px;
  height: 15px;
}

.device-nav-item.is-active {
  color: var(--color-white);
  background: var(--color-brand);
  box-shadow: var(--shadow-button);
}

.device-status {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-top: auto;
  padding: 10px 12px 2px;
  color: var(--color-device-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.device-main {
  padding: 20px 24px 22px;
  color: var(--color-device-ink);
  background: var(--color-device);
}

.device-crumb {
  margin-bottom: 14px;
  color: var(--color-device-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.device-crumb strong {
  color: var(--color-device-ink);
}

.switch-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 10px;
  padding: 14px 16px;
  border: 1px solid var(--color-device-line);
  border-radius: var(--radius-small);
  color: var(--color-device-ink);
  background: var(--color-device-panel);
}

.switch-copy {
  min-width: 0;
}

.switch-name,
.switch-note {
  display: block;
}

.switch-name {
  color: var(--color-device-ink);
  font-size: 0.88rem;
  font-weight: 750;
}

.switch-note {
  color: var(--color-device-muted);
  font-size: 0.75rem;
  line-height: 1.5;
}

.toggle {
  position: relative;
  width: 42px;
  height: 23px;
  margin-left: auto;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-brand);
}

.toggle::after {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 17px;
  height: 17px;
  border-radius: var(--radius-pill);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
  content: "";
}

.toggle.is-off {
  background: var(--color-device-raised);
}

.toggle.is-off::after {
  right: auto;
  left: 3px;
  background: var(--color-device-muted);
}

.protocol-area {
  margin-top: 16px;
  padding-top: 15px;
  border-top: 1px solid var(--color-device-line);
}

.protocol-label {
  margin-bottom: 10px;
  color: var(--color-device-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.protocol-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.protocol-chip {
  padding: 6px 12px;
  border: 1px solid var(--color-device-line);
  border-radius: var(--radius-small);
  color: var(--color-device-muted);
  background: var(--color-device-panel);
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

.protocol-chip.is-active {
  border-color: var(--color-brand);
  color: var(--color-white);
  background: var(--color-brand);
}

.platform-float {
  position: absolute;
  bottom: 6px;
  left: -14px;
  width: 268px;
  padding: 16px 18px 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  color: var(--color-ink);
  background: var(--color-page);
  box-shadow: var(--shadow-float);
}

.platform-float-title {
  margin-bottom: 10px;
  color: var(--color-ink-muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.platform-row {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 0;
  border-top: 1px solid var(--color-line);
}

.platform-icon {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: var(--radius-small);
  color: var(--color-ink);
  background: var(--color-panel-strong);
}

.platform-icon svg {
  width: 16px;
  height: 16px;
}

.platform-name {
  color: inherit;
  font-size: 0.84rem;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
}

.platform-app {
  margin-left: auto;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.palette-grid,
.preview-component-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.swatch {
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  color: var(--color-ink);
  background: var(--color-page);
}

.swatch-color {
  height: 86px;
  border-bottom: 1px solid var(--color-line);
}

.swatch-copy {
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

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

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

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

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

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

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

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

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

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

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

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

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

.type-sample {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-line);
}

.type-sample:last-child {
  border-bottom: 0;
}

.static-footer-preview {
  border-top: 1px solid var(--color-line);
  color: var(--color-ink-muted);
  background: var(--color-panel);
}

@media (max-width: 1040px) {
  .preview-hero-grid {
    grid-template-columns: 1fr;
    padding-top: 56px;
    padding-bottom: 72px;
  }

  .device-stage {
    height: 560px;
  }

  .device-window {
    left: 0;
  }

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

@media (max-width: 768px) {
  .glossary-grid,
  .preview-component-grid {
    grid-template-columns: 1fr;
  }

  .client-card,
  .download-guide-card {
    grid-template-columns: 1fr;
  }

  .client-actions {
    justify-content: flex-start;
  }

  .device-stage {
    height: auto;
    padding-bottom: 0;
  }

  .device-window {
    position: relative;
    top: auto;
    left: auto;
    width: 100%;
    transform: none;
  }

  .platform-float {
    position: relative;
    bottom: auto;
    left: auto;
    width: min(100%, 360px);
    margin-top: 16px;
  }

  .device-body {
    grid-template-columns: 130px minmax(0, 1fr);
  }

  .device-sidebar {
    min-height: 390px;
  }

  .device-nav-item {
    padding-inline: 8px;
  }

  .device-main {
    padding: 16px;
  }
}

@media (max-width: 640px) {
  .article-grid,
  .palette-grid {
    grid-template-columns: 1fr;
  }

  .device-body {
    display: block;
  }

  .device-sidebar {
    min-height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    border-right: 0;
    border-bottom: 1px solid var(--color-device-line);
  }

  .device-nav-item {
    flex: 1 1 42%;
  }

  .device-status {
    width: 100%;
  }

  .switch-note {
    overflow-wrap: anywhere;
  }

  .protocol-chips {
    flex-direction: row;
    flex-wrap: wrap;
  }

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