.tab-shell {
  margin-top: 32px;
}

.tab-list {
  max-width: 100%;
  padding: 6px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-ink);
}

.tab-list [role="tab"] {
  min-height: 42px;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  font-weight: 700;
  white-space: nowrap;
}

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

.tab-list [role="tab"][aria-selected="true"],
.tab-list [role="tab"].is-active {
  background: var(--color-page);
  color: var(--color-ink);
  box-shadow: 0 3px 12px var(--color-shadow-soft);
}

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

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

.toc {
  position: relative;
  max-width: 100%;
  margin: 30px 0 48px;
  padding: 10px;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  color: var(--color-ink);
  overscroll-behavior-inline: contain;
  -webkit-overflow-scrolling: touch;
}

.toc-list {
  min-width: max-content;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 5px;
  list-style: none;
}

.toc a {
  min-height: 42px;
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

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

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

.faq-item {
  border-radius: var(--radius-lg);
  background: var(--color-page);
  color: var(--color-ink);
  box-shadow: 0 8px 28px var(--color-shadow-soft);
}

.faq-item summary {
  min-height: 64px;
  padding: 19px 58px 19px 24px;
  position: relative;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 750;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 24px;
  width: 22px;
  height: 22px;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  background: var(--color-panel);
  color: var(--color-ink);
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  transform: translateY(-50%);
}

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

.faq-answer {
  padding: 0 24px 22px;
  color: var(--color-muted);
}

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

.term-card,
.article-card,
.download-card {
  height: 100%;
  border-radius: var(--radius-lg);
  background: var(--color-page);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
}

.term-card {
  padding: 25px;
}

.term-card dt {
  margin-bottom: 8px;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
}

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

.download-card {
  padding: clamp(22px, 3vw, 32px);
}

.download-card__head {
  margin-bottom: 22px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.download-card__identity {
  display: flex;
  align-items: center;
  gap: 14px;
}

.download-card__identity img {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
}

.download-card__title {
  margin: 0;
  font-size: 23px;
}

.download-card__meta {
  margin: 4px 0 0;
  color: var(--color-muted);
  font: 12px/1.5 var(--font-mono);
}

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

.badge,
.tag {
  max-width: 100%;
  min-height: 28px;
  padding: 5px 10px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  overflow: hidden;
  background: var(--color-panel-strong);
  color: var(--color-ink);
  font-size: 12px;
  font-weight: 750;
  line-height: 1.4;
  white-space: nowrap;
}

.badge::before {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  background: var(--color-muted);
  content: "";
}

.badge-featured,
.badge-recommended {
  background: var(--color-accent);
  color: var(--color-on-dark);
}

.badge-featured::before,
.badge-recommended::before {
  background: var(--color-on-dark);
}

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

.article-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.article-card__meta {
  margin-bottom: 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  color: var(--color-muted);
  font: 12px/1.5 var(--font-mono);
}

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

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

.article-card h3 a:hover {
  color: var(--color-accent-deep);
}

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

.article-card__link {
  margin-top: auto;
  color: var(--color-accent-deep);
  font-weight: 700;
  text-decoration: none;
}

.callout {
  margin: 28px 0;
  padding: 20px 22px 20px 24px;
  position: relative;
  border-radius: var(--radius-md);
  background: var(--color-panel);
  color: var(--color-ink);
}

.callout::before {
  position: absolute;
  top: 16px;
  bottom: 16px;
  left: 0;
  width: 4px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.callout strong {
  display: block;
  margin-bottom: 4px;
}

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

.callout-info::before {
  background: var(--color-sketch);
}

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

.dl-fab {
  position: fixed;
  z-index: 80;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  max-width: min(320px, calc(100vw - 36px));
  padding: 13px 18px 13px 13px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-ink);
  color: var(--color-on-dark);
  box-shadow: var(--shadow-float);
  text-decoration: none;
}

.dl-fab:hover {
  color: var(--color-on-dark);
  transform: translateY(-2px);
}

.dl-fab__icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  background: var(--color-accent);
  color: var(--color-on-dark);
}

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

.dl-fab__copy {
  min-width: 0;
}

.dl-fab__copy strong,
.dl-fab__copy span {
  display: block;
}

.dl-fab__copy strong {
  color: var(--color-on-dark);
  font-size: 14px;
  line-height: 1.35;
}

.dl-fab__copy span {
  color: var(--color-dark-muted);
  font-size: 12px;
  line-height: 1.45;
}

.end-download-card {
  margin-top: 54px;
  padding: clamp(24px, 4vw, 38px);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--color-panel);
  color: var(--color-ink);
}

.end-download-card__copy {
  max-width: 660px;
}

.end-download-card__copy h2,
.end-download-card__copy h3 {
  margin-bottom: 8px;
}

.end-download-card__copy p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.prose > .data-table {
  max-width: 100%;
  min-width: 0;
}

.preview-hero {
  padding-top: 34px;
  overflow-x: clip;
  text-align: center;
}

.preview-hero__inner {
  max-width: 840px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.preview-hero__title-mark {
  position: relative;
  display: inline-block;
  white-space: nowrap;
}

.preview-hero__title-mark svg {
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 11px;
  overflow: visible;
}

.preview-hero__title-mark path {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 4;
  stroke-linecap: round;
}

.preview-hero__desc {
  margin-top: 16px;
  color: var(--color-muted);
  font-size: 16px;
}

.platform-row,
.fact-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.platform-row {
  margin-top: 22px;
  gap: 20px 32px;
}

.platform-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.platform-link:hover {
  color: var(--color-ink);
}

.platform-link svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

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

.fact-row {
  margin-top: 28px;
  gap: 12px 36px;
}

.fact-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-muted);
  font: 12px/1.5 var(--font-mono);
}

.fact-pill::before {
  width: 5px;
  height: 5px;
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.fact-pill b {
  color: var(--color-ink);
}

.mock-stage {
  position: relative;
  max-width: 1104px;
  margin: 32px auto 0;
  padding-inline: var(--gutter);
}

.mock-window {
  position: relative;
  z-index: 2;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xl);
  background: var(--color-page);
  color: var(--color-ink);
  box-shadow: var(--shadow-card);
  text-align: left;
}

.mock-bar {
  height: 40px;
  padding-inline: 17px;
  border-bottom: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  gap: 7px;
  background: var(--color-panel);
  color: var(--color-ink);
}

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

.mock-dot.red {
  background: var(--color-error);
}

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

.mock-dot.green {
  background: var(--color-success);
}

.mock-title {
  margin-left: 10px;
  color: var(--color-muted);
  font: 12px/1 var(--font-mono);
}

.mock-menu {
  height: 33px;
  padding-inline: 12px;
  border-bottom: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--color-page);
  color: var(--color-ink);
}

.mock-menu span {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
}

.mock-menu .active {
  background: var(--color-panel-strong);
  font-weight: 700;
}

.mock-body {
  min-height: 326px;
  display: grid;
  grid-template-columns: 200px minmax(300px, 1fr) 278px;
}

.mock-side {
  padding: 15px 10px 13px;
  display: flex;
  flex-direction: column;
  background: var(--color-ink);
  color: var(--color-on-dark);
}

.mock-label {
  padding: 0 10px 9px;
  color: var(--color-dark-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.mock-side-item {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--color-dark-muted);
  font-size: 13px;
}

.mock-side-item::before {
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  border: 1px solid currentColor;
  border-radius: var(--radius-sm);
  content: "";
}

.mock-side-item.active {
  background: var(--color-dark-line);
  color: var(--color-on-dark);
  font-weight: 700;
}

.mock-list {
  border-right: 1px solid var(--color-line);
  background: var(--color-page);
  color: var(--color-ink);
}

.mock-list-head,
.mock-server {
  padding-inline: 16px;
  display: grid;
  grid-template-columns: 92px minmax(90px, 1fr) 54px;
  align-items: center;
  gap: 10px;
}

.mock-list-head {
  height: 34px;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.mock-server {
  position: relative;
  min-height: 47px;
  border-bottom: 1px solid var(--color-panel);
  font-size: 13px;
}

.mock-server.active {
  background: var(--color-panel);
  color: var(--color-ink);
}

.mock-server.active::before {
  position: absolute;
  top: 7px;
  bottom: 7px;
  left: 0;
  width: 3px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.mock-protocol {
  width: 78px;
  padding: 3px 0;
  border-radius: var(--radius-pill);
  background: var(--color-panel-strong);
  color: var(--color-muted);
  font: 700 10px/1.5 var(--font-mono);
  text-align: center;
}

.mock-server.active .mock-protocol {
  border: 1px solid var(--color-line);
  background: var(--color-page);
  color: var(--color-accent-deep);
}

.mock-network {
  color: var(--color-muted);
  font: 11px/1.4 var(--font-mono);
}

.mock-settings {
  padding: 13px 18px 10px;
  background: var(--color-page);
  color: var(--color-ink);
}

.mock-setting {
  padding: 11px 0;
  border-bottom: 1px solid var(--color-panel);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.mock-setting-name {
  font-size: 13px;
  font-weight: 650;
}

.mock-setting-hint {
  margin-top: 2px;
  color: var(--color-muted);
  font-size: 11px;
}

.mock-chip {
  padding: 5px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-panel-strong);
  color: var(--color-ink);
  font: 11px/1.4 var(--font-mono);
  white-space: nowrap;
}

.mock-switch {
  width: 35px;
  height: 20px;
  flex-shrink: 0;
  position: relative;
  border-radius: var(--radius-pill);
  background: var(--color-panel-strong);
}

.mock-switch::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: var(--radius-pill);
  background: var(--color-page);
  box-shadow: 0 1px 2px var(--color-shadow-mid);
  content: "";
}

.mock-switch.active {
  background: var(--color-accent);
}

.mock-switch.active::after {
  right: 3px;
  left: auto;
}

.mock-status {
  height: 31px;
  padding-inline: 18px;
  border-top: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  gap: 24px;
  background: var(--color-panel);
  color: var(--color-muted);
  font: 11px/1 var(--font-mono);
}

.mock-status span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.mock-status span:first-child::before {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  background: var(--color-success);
  content: "";
}

.mock-sketch {
  position: absolute;
  z-index: 1;
  pointer-events: none;
}

.mock-sketch path {
  fill: none;
  stroke: var(--color-sketch);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.55;
}

.mock-cloud-left {
  top: -76px;
  left: -18px;
  width: 150px;
}

.mock-cloud-right {
  top: 150px;
  right: -25px;
  width: 96px;
}

.preview-block {
  padding-top: 110px;
  padding-bottom: 110px;
}

.token-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.token-swatch {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-page);
  color: var(--color-ink);
  box-shadow: 0 8px 24px var(--color-shadow-soft);
}

.token-swatch__color {
  height: 86px;
}

.token-swatch__copy {
  padding: 13px;
  font: 11px/1.6 var(--font-mono);
  overflow-wrap: anywhere;
}

.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-accent { background: var(--color-accent); }
.swatch-accent-deep { background: var(--color-accent-deep); }
.swatch-ink { background: var(--color-ink); }
.swatch-muted { background: var(--color-muted); }
.swatch-sketch { background: var(--color-sketch); }
.swatch-success { background: var(--color-success); }
.swatch-warning { background: var(--color-warning); }
.swatch-error { background: var(--color-error); }

.type-specimen {
  display: grid;
  gap: 18px;
}

.type-specimen > div {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-line);
}

.preview-footer {
  margin-top: 80px;
}

@media (max-width: 1080px) {
  .mock-body {
    grid-template-columns: 176px minmax(280px, 1fr) 244px;
  }

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

@media (max-width: 820px) {
  .mock-window {
    overflow-x: auto;
  }

  .mock-window > * {
    min-width: 760px;
  }

  .mock-bar,
  .mock-menu,
  .mock-status {
    width: 760px;
  }

  .mock-body {
    width: 760px;
  }

  .mock-sketch {
    display: none;
  }
}

@media (max-width: 640px) {
  .tab-list {
    border-radius: var(--radius-lg);
    justify-content: center;
  }

  .tab-list [role="tab"] {
    flex: 0 1 auto;
  }

  .download-card__head,
  .end-download-card {
    align-items: flex-start;
    flex-direction: column;
  }

  .dl-fab {
    right: 12px;
    bottom: 12px;
    max-width: calc(100vw - 24px);
  }

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

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

  .preview-block {
    padding-top: 84px;
    padding-bottom: 84px;
  }
}