.hero-preview {
  position: relative;
  max-width: 1400px;
  margin: 8px auto 0;
  overflow: hidden;
  overflow-x: clip;
  border: 1px solid var(--color-hero-line);
  border-radius: var(--radius-large);
  background: var(--color-bg);
  color: var(--color-text);
}

.hero-preview::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(1080px 720px at 14% 104%, var(--color-glow-blue), transparent 60%),
    radial-gradient(1040px 680px at 86% -6%, var(--color-glow-pink), transparent 58%);
  content: "";
}

.hero-preview-inner {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin-inline: auto;
  padding: 64px 32px 52px;
  text-align: center;
}

.hero-preview h1 {
  max-width: 840px;
  margin-inline: auto;
}

.hero-copy {
  max-width: 620px;
  margin: 20px auto 0;
  color: var(--color-text-soft);
  font-size: 15.5px;
  line-height: 1.72;
}

.hero-copy strong {
  color: var(--color-text);
  font-weight: 500;
}

.hero-actions {
  justify-content: center;
  margin-top: 30px;
}

.subscription-frame {
  width: min(580px, 100%);
  margin: 46px auto 0;
  padding: 7px;
  border: 1px solid var(--color-card-frame-line);
  border-radius: var(--radius-frame);
  background: var(--color-card-frame);
  box-shadow: var(--shadow-card);
}

.subscription-window {
  overflow: hidden;
  border: 1px solid var(--color-card-edge);
  border-radius: var(--radius-card);
  background: var(--color-card);
  color: var(--color-card-ink);
  box-shadow: inset 0 1px 0 var(--color-card-well);
  text-align: left;
}

.subscription-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 20px;
  border-bottom: 1px solid var(--color-card-line);
}

.subscription-app {
  width: 24px;
  height: 24px;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-mist-blue), var(--color-smoke-pink));
  color: var(--color-card-well);
}

.subscription-app svg {
  width: 12px;
  height: 12px;
}

.subscription-title {
  color: var(--color-card-ink);
  font-size: 13.5px;
  font-weight: 600;
}

.subscription-crumb {
  color: var(--color-card-muted);
  font-size: 12px;
}

.window-dots {
  display: flex;
  flex-shrink: 0;
  gap: 6px;
  margin-left: auto;
}

.window-dots i {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
  background: var(--color-card-line);
}

.subscription-body {
  padding: 18px 20px 20px;
}

.mock-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  color: var(--color-card-muted);
  font-size: 12px;
  font-weight: 500;
}

.mock-label em {
  color: var(--color-card-muted);
  font-size: 11px;
  font-style: normal;
}

.mock-input {
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 13px;
  overflow-wrap: anywhere;
  border: 1px solid var(--color-card-line);
  border-radius: var(--radius-small);
  background: var(--color-card-well);
  color: var(--color-card-ink);
  box-shadow: inset 0 1px 2px var(--color-card-edge);
  font-size: 13px;
}

.mock-input.is-focus {
  border-color: var(--color-accent-deep);
  box-shadow: 0 0 0 3px var(--color-focus);
}

.mock-input.mono {
  font-family: var(--font-mono);
  font-size: 12px;
}

.mock-caret {
  width: 1px;
  height: 16px;
  flex: 0 0 auto;
  background: var(--color-accent-deep);
}

.mock-copy {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  margin-left: auto;
  color: var(--color-card-muted);
}

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

.mock-grid > * {
  min-width: 0;
}

.setting-rows {
  margin-top: 16px;
  overflow: hidden;
  border: 1px solid var(--color-card-line);
  border-radius: var(--radius-medium);
  background: var(--color-card-well);
  color: var(--color-card-ink);
}

.setting-row {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 14px;
}

.setting-row + .setting-row {
  border-top: 1px solid var(--color-card-line);
}

.setting-name {
  display: block;
  color: var(--color-card-ink);
  font-size: 13.5px;
  font-weight: 500;
}

.setting-desc {
  display: block;
  color: var(--color-card-muted);
  font-size: 11.5px;
}

.switch-static {
  position: relative;
  width: 40px;
  height: 23px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-deep));
}

.switch-static::after {
  position: absolute;
  top: 2.5px;
  right: 2.5px;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-pill);
  background: var(--color-card-well);
  box-shadow: 0 1px 3px var(--color-card-edge);
  content: "";
}

.select-static {
  flex: 0 0 auto;
  padding: 6px 12px;
  border: 1px solid var(--color-card-line);
  border-radius: var(--radius-small);
  background: var(--color-card);
  color: var(--color-card-ink);
  font-size: 12px;
  font-weight: 500;
}

.subscription-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 18px;
}

.subscription-hint {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--color-card-muted);
  font-size: 12px;
}

.subscription-hint i {
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-success);
}

.subscription-submit {
  flex: 0 0 auto;
  padding: 9px 22px;
  border-radius: var(--radius-small);
  background: var(--color-card-ink);
  color: var(--color-card);
  font-size: 13px;
  font-weight: 500;
}

.platform-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 30px;
}

.platform-row a,
.platform-row li {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-pill);
  background: var(--color-overlay);
  color: var(--color-text-soft);
  font-size: 13px;
}

.platform-row svg {
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  color: var(--color-text-muted);
}

.tabs {
  min-width: 0;
}

.tab-list {
  display: flex;
  max-width: 100%;
  gap: 7px;
  padding: 6px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  -webkit-overflow-scrolling: touch;
}

.tab-list [role="tab"] {
  min-height: 40px;
  flex: 1 0 auto;
  padding: 8px 16px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 13px;
}

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

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

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

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

.toc {
  padding: 10px;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
}

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

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

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

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

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

.faq-item summary {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 20px;
  cursor: pointer;
  color: var(--color-text);
  font-weight: 500;
  list-style: none;
}

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

.faq-item summary::after {
  width: 24px;
  height: 24px;
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-soft);
  content: "+";
}

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

.faq-answer {
  padding: 0 20px 20px;
  color: var(--color-text-muted);
}

.term-card {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-text);
}

.term-card dt {
  margin-bottom: 10px;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
}

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

.client-card {
  display: grid;
  gap: 24px;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-panel);
  color: var(--color-text);
  box-shadow: var(--shadow-panel);
}

.client-card-head {
  display: flex;
  align-items: flex-start;
  gap: 18px;
}

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

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

.client-card-copy p {
  margin-top: 8px;
  color: var(--color-text-muted);
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  max-width: 100%;
  min-height: 27px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 10px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel-raised);
  color: var(--color-text-soft);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.3;
}

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

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

.badge-retired {
  border-color: var(--color-error);
  background: var(--color-panel-raised);
  color: var(--color-error);
}

.article-card {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-text);
  transition: transform var(--ease-standard), border-color var(--ease-standard);
}

.article-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-line-strong);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.article-card h3 {
  font-size: 20px;
}

.article-card p {
  margin-top: 14px;
  color: var(--color-text-muted);
}

.article-card-link {
  margin-top: auto;
  padding-top: 24px;
  color: var(--color-accent);
  font-size: 13px;
}

.callout {
  padding: 20px 22px;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-medium);
  background: var(--color-panel-raised);
  color: var(--color-text-soft);
}

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

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

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

.download-note-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-panel);
  color: var(--color-text);
}

.download-note-card p {
  margin-top: 5px;
  color: var(--color-text-muted);
}

.dl-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 80;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-overlay);
  color: var(--color-text-soft);
  box-shadow: 0 10px 26px -12px var(--color-shadow);
  font-size: 12px;
  font-weight: 500;
}

.dl-fab:hover {
  border-color: var(--color-accent-deep);
  color: var(--color-text);
}

.dl-fab svg {
  width: 13px;
  height: 13px;
  flex: 0 0 auto;
  color: var(--color-accent);
}

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

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

.swatch-color {
  height: 82px;
  background: var(--swatch-color);
}

.swatch-info {
  padding: 13px;
}

.swatch-info code {
  display: block;
  margin-top: 4px;
  color: var(--color-text-muted);
  font-size: 11px;
}

.swatch-bg { --swatch-color: var(--color-bg); }
.swatch-panel { --swatch-color: var(--color-panel); }
.swatch-panel-raised { --swatch-color: var(--color-panel-raised); }
.swatch-border { --swatch-color: var(--color-border); }
.swatch-accent { --swatch-color: var(--color-accent); }
.swatch-accent-deep { --swatch-color: var(--color-accent-deep); }
.swatch-text { --swatch-color: var(--color-text); }
.swatch-muted { --swatch-color: var(--color-text-muted); }
.swatch-success { --swatch-color: var(--color-success); }
.swatch-warning { --swatch-color: var(--color-warning); }
.swatch-error { --swatch-color: var(--color-error); }
.swatch-mist { --swatch-color: var(--color-mist-blue); }
.swatch-smoke { --swatch-color: var(--color-smoke-pink); }
.swatch-card { --swatch-color: var(--color-card); }

.type-sample {
  display: grid;
  gap: 26px;
}

.type-row {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 24px;
  align-items: baseline;
}

.type-label {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.preview-footer {
  margin-top: 0;
}

@media (max-width: 768px) {
  .hero-preview {
    margin-inline: 10px;
  }

  .hero-preview-inner {
    padding: 44px 18px 38px;
  }

  .hero-preview .button-row {
    justify-content: center;
  }

  .subscription-frame {
    margin-top: 36px;
  }

  .mock-grid {
    grid-template-columns: 1fr;
  }

  .subscription-actions,
  .download-note-card {
    align-items: stretch;
    flex-direction: column;
  }

  .subscription-submit {
    text-align: center;
  }

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

  .type-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

@media (max-width: 640px) {
  .subscription-head {
    flex-wrap: wrap;
  }

  .subscription-crumb {
    order: 3;
    width: 100%;
    padding-left: 34px;
  }

  .setting-row {
    align-items: flex-start;
  }

  .platform-row {
    flex-direction: row;
    justify-content: center;
  }

  .platform-row a,
  .platform-row li {
    padding-inline: 11px;
  }

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