.page-faq {
  --faq-line: rgba(240, 235, 226, 0.12);
  --faq-soft: rgba(19, 26, 33, 0.74);
  position: relative;
  overflow-x: clip;
  padding-bottom: 2rem;
}

.page-faq .faq-hero {
  position: relative;
  padding: 2.5rem 0 3rem;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 1rem;
  right: 0;
  width: min(380px, 46vw);
  height: 190px;
  background: linear-gradient(135deg, rgba(198, 245, 0, 0.13), rgba(0, 229, 255, 0.05));
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero__main {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.1rem, 6vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--cream);
  margin: 1rem 0 1.25rem;
  padding-left: 1.1rem;
  border-left: 8px solid var(--volt);
}

.page-faq .faq-hero__sub {
  display: block;
  margin-top: 0.7rem;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(0.95rem, 2.4vw, 1.35rem);
  letter-spacing: 0.01em;
  color: rgba(240, 235, 226, 0.78);
}

.page-faq .faq-hero__deck {
  max-width: 42rem;
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.75;
  color: rgba(240, 235, 226, 0.68);
}

.page-faq .faq-hero__side {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: flex-start;
  margin-top: 2rem;
}

.page-faq .faq-hero__side .rubric {
  padding: 0.8rem 0.7rem;
  font-size: 0.78rem;
  line-height: 1.6;
  letter-spacing: 0.24em;
}

.page-faq .faq-layout {
  position: relative;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 1.25rem 0 1.5rem;
  border-bottom: 1px solid var(--faq-line);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-tabs__label {
  flex: 0 0 auto;
  font-family: var(--font-head);
  font-size: 0.86rem;
  line-height: 1.2;
  color: var(--cream);
  background: var(--stone);
  border: 1px solid rgba(240, 235, 226, 0.14);
  padding: 0.7rem 1.25rem;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  cursor: pointer;
  transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out);
}

.page-faq .faq-tabs__label:hover {
  background: var(--ink-raised);
  border-color: rgba(198, 245, 0, 0.5);
  color: var(--volt);
}

.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 1.5rem 0 2rem;
}

.page-faq .faq-content {
  order: 2;
  min-width: 0;
}

.page-faq .faq-index {
  order: 1;
  background: linear-gradient(145deg, rgba(28, 36, 44, 0.55), rgba(19, 26, 33, 0.42));
  border: 1px solid var(--faq-line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  padding: 1.25rem 1.25rem 1.5rem;
}

.page-faq .faq-index__label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.8rem;
  font-family: var(--font-head);
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--volt);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.page-faq .faq-index__link {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.6rem 0.8rem;
  background: rgba(240, 235, 226, 0.04);
  border: 1px solid rgba(240, 235, 226, 0.08);
  font-size: 0.82rem;
  line-height: 1.5;
  color: rgba(240, 235, 226, 0.85);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) var(--ease-out), color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}

.page-faq .faq-index__link span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: rgba(240, 235, 226, 0.5);
}

.page-faq .faq-index__link:hover {
  background: rgba(198, 245, 0, 0.1);
  border-color: rgba(198, 245, 0, 0.4);
  color: var(--volt);
}

.page-faq .faq-index__note {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed rgba(240, 235, 226, 0.16);
  font-size: 0.82rem;
  line-height: 1.6;
  color: rgba(240, 235, 226, 0.6);
}

.page-faq .faq-index__note p {
  margin: 0;
}

.page-faq .faq-group {
  margin-top: 2rem;
  padding-top: 0.25rem;
}

.page-faq .faq-group:first-child {
  margin-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.85rem;
  border-bottom: 1px solid rgba(240, 235, 226, 0.16);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--ink);
  background: var(--volt);
  padding: 0.3rem 0.65rem;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.page-faq .faq-group[data-cat="sync"] .faq-group__num {
  background: var(--cyan);
}

.page-faq .faq-group[data-cat="func"] .faq-group__num {
  background: var(--volt);
}

.page-faq .faq-group[data-cat="arc"] .faq-group__num {
  background: var(--clay);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.4rem;
  color: var(--cream);
}

.page-faq .faq-group__intro {
  margin: -0.25rem 0 1rem;
  font-size: 0.92rem;
  line-height: 1.65;
  color: rgba(240, 235, 226, 0.6);
}

.page-faq .faq-item {
  margin: 0.85rem 0;
  background: var(--faq-soft);
  border: 1px solid rgba(240, 235, 226, 0.1);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: background var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}

.page-faq .faq-item:hover {
  background: var(--ink-raised);
}

.page-faq .faq-item[open] {
  background: rgba(19, 26, 33, 0.92);
  border-left: 3px solid var(--volt);
}

.page-faq .faq-group[data-cat="dl"] .faq-item[open] {
  border-left-color: var(--moss);
}

.page-faq .faq-group[data-cat="sync"] .faq-item[open] {
  border-left-color: var(--cyan);
}

.page-faq .faq-group[data-cat="func"] .faq-item[open] {
  border-left-color: var(--volt);
}

.page-faq .faq-group[data-cat="arc"] .faq-item[open] {
  border-left-color: var(--clay);
}

.page-faq .faq-item__sum {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .faq-item__no {
  flex: 0 0 3.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--volt);
}

.page-faq .faq-group[data-cat="sync"] .faq-item__no {
  color: var(--cyan);
}

.page-faq .faq-group[data-cat="func"] .faq-item__no {
  color: var(--volt);
}

.page-faq .faq-group[data-cat="arc"] .faq-item__no {
  color: var(--clay);
}

.page-faq .faq-item__ask {
  flex: 1;
  margin: 0;
  font-family: var(--font-head);
  font-size: 1rem;
  line-height: 1.45;
  color: var(--cream);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  background: rgba(240, 235, 226, 0.06);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

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

.page-faq .faq-item__mark::before {
  width: 10px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 10px;
  transition: opacity var(--dur) var(--ease-out);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
}

.page-faq .faq-item__body {
  display: grid;
  gap: 1rem;
  padding: 1rem 1.25rem 1.35rem;
  border-top: 1px dashed rgba(240, 235, 226, 0.14);
}

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(240, 235, 226, 0.78);
}

.page-faq .faq-item__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  width: fit-content;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
}

.page-faq .faq-figure {
  margin: 1.5rem 0;
  padding: 0.5rem;
  background: var(--ink-raised);
  border: 1px solid rgba(240, 235, 226, 0.1);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--stone);
}

.page-faq .faq-figure figcaption {
  padding: 0.85rem 0.75rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  color: rgba(240, 235, 226, 0.66);
}

.page-faq .faq-metrics {
  margin-top: 2rem;
  padding: 2rem 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-metrics__head {
  margin-bottom: 1.5rem;
}

.page-faq .faq-metrics__head h2 {
  margin: 0.5rem 0 0;
  font-family: var(--font-head);
  font-size: 1.6rem;
  color: var(--cream);
}

.page-faq .faq-metrics__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.page-faq .faq-metric {
  position: relative;
  overflow: hidden;
  padding: 1.2rem;
  background: rgba(28, 36, 44, 0.6);
  border: 1px solid var(--faq-line);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-faq .faq-metric::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 48px;
  height: 48px;
  background: var(--volt);
  opacity: 0.1;
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.page-faq .faq-metric__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--volt);
}

.page-faq .faq-metric__unit {
  display: inline-block;
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(240, 235, 226, 0.55);
}

.page-faq .faq-metric p {
  margin: 0.65rem 0 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: rgba(240, 235, 226, 0.7);
}

.page-faq .faq-help {
  display: grid;
  gap: 2rem;
  margin: 1rem 0 2rem;
  padding: 2rem 1.5rem;
  background: linear-gradient(145deg, rgba(0, 229, 255, 0.08), rgba(28, 36, 44, 0.92) 40%, rgba(198, 245, 0, 0.06));
  border: 1px solid rgba(240, 235, 226, 0.12);
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
}

.page-faq .faq-help__main h2 {
  margin: 0.5rem 0 0.75rem;
  font-family: var(--font-head);
  font-size: 1.75rem;
  color: var(--cream);
}

.page-faq .faq-help__main p {
  max-width: 40rem;
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(240, 235, 226, 0.7);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.25rem;
}

.page-faq .faq-help__contacts {
  display: grid;
  gap: 0.65rem;
  align-content: start;
  border-left: 1px solid rgba(240, 235, 226, 0.14);
  padding-left: 1.5rem;
}

.page-faq .faq-help__contacts p {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  max-width: 340px;
  margin: 0;
  font-size: 0.92rem;
  color: var(--cream);
}

.page-faq .faq-help__contacts span {
  font-family: var(--font-mono);
  color: var(--volt);
}

.page-faq #faqcat-dl:checked ~ .faq-body .faq-group:not([data-cat="dl"]),
.page-faq #faqcat-sync:checked ~ .faq-body .faq-group:not([data-cat="sync"]),
.page-faq #faqcat-func:checked ~ .faq-body .faq-group:not([data-cat="func"]),
.page-faq #faqcat-arc:checked ~ .faq-body .faq-group:not([data-cat="arc"]) {
  display: none;
}

.page-faq #faqcat-dl:checked ~ .faq-body .faq-index__list li[data-cat="dl"],
.page-faq #faqcat-sync:checked ~ .faq-body .faq-index__list li[data-cat="sync"],
.page-faq #faqcat-func:checked ~ .faq-body .faq-index__list li[data-cat="func"],
.page-faq #faqcat-arc:checked ~ .faq-body .faq-index__list li[data-cat="arc"] {
  display: list-item;
}

.page-faq #faqcat-dl:checked ~ .faq-body .faq-index__list li:not([data-cat="dl"]),
.page-faq #faqcat-sync:checked ~ .faq-body .faq-index__list li:not([data-cat="sync"]),
.page-faq #faqcat-func:checked ~ .faq-body .faq-index__list li:not([data-cat="func"]),
.page-faq #faqcat-arc:checked ~ .faq-body .faq-index__list li:not([data-cat="arc"]) {
  display: none;
}

@media (min-width: 1080px) {
  .page-faq .faq-hero {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
    align-items: end;
    padding: 4rem 0 4.5rem;
  }

  .page-faq .faq-hero__side {
    justify-self: end;
    margin-top: 0;
  }

  .page-faq .faq-body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: clamp(2rem, 4vw, 4rem);
    padding: 2.5rem 0 3rem;
  }

  .page-faq .faq-content {
    order: 1;
  }

  .page-faq .faq-index {
    order: 2;
    position: sticky;
    top: 5.5rem;
    align-self: start;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.6rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__link {
    flex-direction: row;
    align-items: baseline;
    gap: 0.6rem;
    white-space: normal;
  }

  .page-faq .faq-tabs__label {
    font-size: 0.92rem;
  }

  .page-faq .faq-metrics__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }

  .page-faq .faq-help {
    grid-template-columns: 1fr 340px;
    align-items: center;
    padding: 2.5rem 2.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}