.page-faq {
  position: relative;
  background:
    radial-gradient(ellipse at 88% 4%, rgba(246, 195, 67, 0.12), transparent 38%),
    radial-gradient(circle at 4% 28%, rgba(43, 197, 180, 0.08), transparent 26%);
  padding-bottom: 56px;
}

.page-faq::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 180px 60px at 12% 30%, rgba(201, 154, 42, 0.14), transparent 70%),
    radial-gradient(ellipse 220px 70px at 6% 36%, rgba(201, 154, 42, 0.10), transparent 70%),
    radial-gradient(ellipse 140px 50px at 85% 58%, rgba(43, 197, 180, 0.08), transparent 70%);
}

.page-faq .breadcrumb {
  padding-top: 18px;
  padding-bottom: 16px;
}

.page-faq .faq-mast,
.page-faq .faq-layout,
.page-faq .faq-support {
  position: relative;
  z-index: 1;
}

.page-faq .faq-mast {
  margin-bottom: 40px;
}

.page-faq .faq-mast__grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-faq .faq-mast__kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .faq-mast__kicker::after {
  content: "";
  height: 1px;
  width: 64px;
  background: linear-gradient(90deg, var(--c-gold-deep), transparent);
}

.page-faq .faq-mast__title {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--c-text);
}

.page-faq .faq-mast__suffix {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.55em;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--c-gold-deep);
}

.page-faq .faq-mast__lead {
  max-width: 560px;
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-text-dim);
}

.page-faq .faq-search {
  max-width: 560px;
  background: var(--c-panel);
  border-radius: var(--radius-pill);
  box-shadow:
    0 0 0 1px rgba(201, 154, 42, 0.18),
    0 8px 24px rgba(0, 0, 0, 0.18);
}

.page-faq .faq-search__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-radius: var(--radius-pill);
  color: var(--c-text-dim);
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast);
}

.page-faq .faq-search__link:hover,
.page-faq .faq-search__link:focus-visible {
  background: var(--c-panel-hi);
  color: var(--c-text);
}

.page-faq .faq-search__icon {
  flex: none;
  color: var(--c-gold);
}

.page-faq .faq-search__text {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  line-height: 1.5;
}

.page-faq .faq-search__key {
  flex: none;
  padding: 2px 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-gold);
  border: 1px solid var(--c-gold-deep);
  border-radius: var(--radius-pill);
}

.page-faq .faq-visual {
  position: relative;
  margin: 0;
}

.page-faq .faq-visual::after {
  content: "";
  position: absolute;
  right: 16px;
  bottom: -16px;
  width: 88px;
  height: 8px;
  border-radius: 4px;
  background: var(--c-gold);
  opacity: 0.85;
}

.page-faq .faq-visual__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.28);
}

.page-faq .faq-visual__cap {
  margin-top: 14px;
  font-size: 13px;
  text-align: right;
  color: var(--c-text-dim);
}

.page-faq .faq-layout {
  display: grid;
  gap: 28px;
  margin-bottom: 48px;
}

.page-faq .faq-dir__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-gold-deep);
}

.page-faq .faq-dir__list {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  margin: 0;
  padding: 2px 2px 8px;
  list-style: none;
  scrollbar-width: thin;
}

.page-faq .faq-dir__item {
  flex: 0 0 auto;
}

.page-faq .faq-dir__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--c-text-dim);
  text-decoration: none;
  background: var(--c-panel);
  border-radius: var(--radius-pill);
  transition: background var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);
}

.page-faq .faq-dir__index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-gold-deep);
  transition: color var(--t-fast);
}

.page-faq .faq-dir__link:hover,
.page-faq .faq-dir__link:focus-visible,
.page-faq .faq-dir__link.is-active {
  background: var(--c-panel-hi);
  color: var(--c-text);
  box-shadow: 0 0 0 1px rgba(246, 195, 67, 0.22);
}

.page-faq .faq-dir__link.is-active .faq-dir__index,
.page-faq .faq-dir__link:hover .faq-dir__index {
  color: var(--c-cyan);
}

.page-faq .faq-section {
  scroll-margin-top: 130px;
  padding: 32px 0;
}

.page-faq .faq-section + .faq-section {
  border-top: 1px solid rgba(201, 154, 42, 0.14);
}

.page-faq .faq-section__head {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 20px;
}

.page-faq .faq-section__index {
  flex: none;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-gold);
  background: var(--c-panel);
  border-radius: var(--radius-sm);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-text);
}

.page-faq .faq-section__hint {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-dim);
}

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

.page-faq .qa {
  background: var(--c-panel);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: background var(--t-fast);
}

.page-faq .qa[open] {
  background: var(--c-panel-hi);
}

.page-faq .qa summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 20px 18px 26px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa summary::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 0;
  width: 5px;
  border-radius: 0 4px 4px 0;
  background: var(--c-gold);
  transition: background var(--t-fast);
}

.page-faq .qa[open] summary::before {
  background: var(--c-cyan);
}

.page-faq .qa__index {
  flex: none;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-gold-deep);
}

.page-faq .qa__title {
  flex: 1;
  min-width: 0;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-text);
}

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 26px;
  height: 26px;
  margin-top: 2px;
  color: var(--c-gold);
  background: var(--c-panel);
  border-radius: 50%;
  transition: background var(--t-fast);
}

.page-faq .qa[open] .qa__mark {
  background: var(--c-panel-hi);
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: currentColor;
}

.page-faq .qa__mark::before {
  width: 12px;
  height: 2px;
}

.page-faq .qa__mark::after {
  width: 2px;
  height: 12px;
  transition: transform var(--t-fast);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translate(-50%, -50%) scale(0);
}

.page-faq .qa__answer {
  padding: 0 22px 22px 26px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-text-dim);
  border-top: 1px solid rgba(43, 197, 180, 0.14);
}

.page-faq .qa__answer p {
  margin: 0 0 8px;
}

.page-faq .qa__answer p:last-child {
  margin-bottom: 0;
}

.page-faq .qa__answer a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color var(--t-fast);
}

.page-faq .qa__answer a:hover {
  color: var(--c-gold);
}

.page-faq .faq-em {
  color: var(--c-cyan);
  font-weight: 500;
  font-style: normal;
}

.page-faq .faq-version-compare {
  margin-top: 28px;
  overflow-x: auto;
}

.page-faq .faq-version-compare__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--c-gold-deep);
}

.page-faq .version-map {
  display: block;
  width: 100%;
  min-width: 580px;
  height: auto;
  background: linear-gradient(180deg, rgba(27, 18, 38, 0.4), rgba(27, 18, 38, 0));
  border-radius: var(--radius-lg);
}

.page-faq .ver-stage__bg {
  fill: var(--c-panel);
  stroke: transparent;
  stroke-width: 1.5;
  transition: stroke var(--t-fast);
}

.page-faq .ver-stage__node {
  fill: var(--c-panel);
  stroke: var(--c-gold-deep);
  stroke-width: 2;
  transition: stroke var(--t-fast), fill var(--t-fast), stroke-width var(--t-fast);
}

.page-faq .ver-stage__code {
  font-family: var(--font-mono);
  font-size: 16px;
  fill: var(--c-gold);
}

.page-faq .ver-stage__label {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  fill: var(--c-text);
}

.page-faq .ver-stage__desc {
  font-family: var(--font-sans);
  font-size: 12px;
  fill: var(--c-text-dim);
}

.page-faq .ver-map-arrow {
  stroke: var(--c-text-dim);
  stroke-width: 2;
  stroke-dasharray: 4 3;
}

.page-faq .ver-stage--v2 .ver-stage__node {
  stroke: var(--c-red-soft);
}

.page-faq .ver-stage--v3 .ver-stage__node {
  fill: var(--c-gold);
  stroke: var(--c-gold);
}

.page-faq .ver-stage--v3 .ver-stage__code {
  fill: var(--c-bg);
}

.page-faq .ver-stage--v3 .ver-stage__bg {
  stroke: rgba(246, 195, 67, 0.28);
}

.page-faq .ver-stage:hover .ver-stage__bg {
  stroke: var(--c-cyan);
}

.page-faq .ver-stage:hover .ver-stage__node {
  stroke: var(--c-cyan);
  stroke-width: 4;
}

.page-faq .ver-stage--v3:hover .ver-stage__node {
  fill: var(--c-cyan);
}

.page-faq .ver-stage--v3:hover .ver-stage__code {
  fill: var(--c-bg);
}

.page-faq .faq-diagram {
  margin: 16px 0 0;
}

.page-faq .faq-diagram__img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 1px solid rgba(201, 154, 42, 0.18);
  border-radius: var(--radius-md);
}

.page-faq .faq-diagram__cap {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-text-dim);
}

.page-faq .faq-support {
  display: grid;
  gap: 20px;
  padding: 32px;
  background: linear-gradient(135deg, rgba(246, 195, 67, 0.14), rgba(213, 68, 60, 0.10));
  border: 1px solid rgba(246, 195, 67, 0.22);
  border-radius: var(--radius-lg);
}

.page-faq .faq-support__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--c-text);
}

.page-faq .faq-support__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-text-dim);
}

.page-faq .faq-support__desc a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-faq .faq-support__desc a:hover {
  color: var(--c-gold);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 640px) {
  .page-faq .faq-visual {
    justify-self: end;
    width: 360px;
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 1fr);
    align-items: center;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-mast__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 1fr);
    gap: 48px;
  }

  .page-faq .faq-mast__lead {
    font-size: 16px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-dir {
    position: sticky;
    top: 120px;
  }

  .page-faq .faq-dir__list {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    overflow: visible;
  }

  .page-faq .faq-dir__link {
    padding: 12px 16px;
    border-radius: 14px;
  }

  .page-faq .faq-section {
    padding: 40px 0;
  }
}