.page-faq {
  --faq-ink: #1A2D4A;
  --faq-muted: rgba(26, 45, 74, 0.62);
  --faq-line: rgba(26, 45, 74, 0.12);
  --faq-card: #FFFFFF;
  background: var(--surface-light);
  color: var(--faq-ink);
  min-height: 70vh;
}

.page-faq .faq-search {
  position: relative;
  overflow: hidden;
  padding: clamp(2.25rem, 5vw, 3.5rem) 0;
  background: var(--primary-bg);
  color: var(--text-primary);
}

.page-faq .faq-search::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 52px 52px;
  opacity: 0.45;
}

.page-faq .faq-search__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.page-faq .faq-search__panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-faq .faq-search__input {
  width: 100%;
  padding: 0.9375rem 1.25rem;
  border: 1px solid var(--accent-neon);
  border-radius: 0.625rem;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  line-height: 1.5;
  -webkit-appearance: none;
  appearance: none;
}

.page-faq .faq-search__input::placeholder {
  color: rgba(230, 237, 247, 0.5);
}

.page-faq .faq-search__input:focus {
  outline: 2px solid var(--accent-gold);
  outline-offset: 2px;
  background: rgba(255, 255, 255, 0.1);
}

.page-faq .faq-search__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.page-faq .faq-search__tags-label {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: rgba(230, 237, 247, 0.6);
}

.page-faq .faq-search__visual {
  margin: 0 auto;
  width: 100%;
  max-width: 480px;
}

.page-faq .faq-search__visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--grid-line);
  border-radius: 0.75rem;
}

.page-faq .faq-search__caption {
  margin-top: 0.625rem;
  font-size: 0.8125rem;
  text-align: right;
  letter-spacing: 0.05em;
  color: rgba(230, 237, 247, 0.55);
}

.page-faq .faq-hot {
  padding: clamp(3rem, 6vw, 4.5rem) 0 2.25rem;
}

.page-faq .faq-hot__grid {
  display: grid;
  gap: 0.875rem;
  margin-top: 1.75rem;
}

.page-faq .faq-item {
  position: relative;
  padding: 0 1.25rem;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-left: 4px solid var(--accent-neon);
  border-radius: 0.5rem;
  scroll-margin-top: calc(var(--header-h) + 16px);
  transition: box-shadow var(--t-fast), transform var(--t-fast);
}

.page-faq .faq-item::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 22px;
  height: 22px;
  border-radius: 0 0.5rem 0 0;
  background: linear-gradient(225deg, transparent 50%, rgba(26, 45, 74, 0.07) 50%);
  pointer-events: none;
}

.page-faq .faq-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(11, 29, 58, 0.1);
}

.page-faq .faq-item[open] {
  border-left-color: var(--accent-gold);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 1.125rem 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: -2px;
  border-radius: 0.375rem;
}

.page-faq .faq-item__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.375rem;
  font-weight: 400;
  line-height: 1;
  color: var(--faq-ink);
  opacity: 0.55;
  transition: transform var(--t-fast), opacity var(--t-fast);
}

.page-faq .faq-item[open] .faq-item__summary::after {
  content: "−";
  opacity: 1;
  transform: rotate(180deg);
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.25rem;
  height: 1.625rem;
  padding: 0 0.375rem;
  background: var(--accent-neon);
  color: var(--primary-bg);
  clip-path: polygon(10% 0, 100% 0, 90% 100%, 0 100%);
  font-weight: 700;
  font-size: 0.8125rem;
}

.page-faq .faq-item__question {
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--faq-ink);
  word-break: break-word;
}

.page-faq .faq-item__body {
  padding: 0.875rem 0 1.125rem;
  border-top: 1px dashed var(--faq-line);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-on-light);
}

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

.page-faq .faq-link {
  color: var(--primary-bg);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--accent-neon);
  text-underline-offset: 2px;
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--accent-gold);
  text-decoration-color: var(--accent-gold);
}

.page-faq .faq-catalog {
  padding: 2rem 0 clamp(3rem, 6vw, 5rem);
  background-color: var(--surface-light);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
}

.page-faq .faq-catalog__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}

.page-faq .faq-catalog__sidebar {
  position: relative;
}

.page-faq .faq-catalog__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.page-faq .faq-catalog__note {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding: 0.625rem 0.875rem;
  border: 1px dashed var(--faq-line);
  border-radius: 0.375rem;
  font-size: 0.8125rem;
  color: var(--faq-muted);
}

.page-faq .faq-cat-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.125rem 0.625rem 0.875rem;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  color: var(--faq-ink);
  font-size: 0.9375rem;
  font-weight: 700;
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}

.page-faq .faq-cat-link__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.75rem;
  height: 1.5rem;
  border-radius: 0.25rem;
  background: rgba(11, 29, 58, 0.08);
  color: var(--primary-bg);
  font-weight: 700;
  font-size: 0.8125rem;
  transition: background var(--t-fast), color var(--t-fast);
}

.page-faq .faq-cat-link:hover,
.page-faq .faq-cat-link:focus-visible {
  background: var(--primary-bg);
  border-color: var(--primary-bg);
  color: var(--text-primary);
  box-shadow: 0 6px 20px rgba(11, 29, 58, 0.24);
}

.page-faq .faq-cat-link:hover .faq-cat-link__num,
.page-faq .faq-cat-link:focus-visible .faq-cat-link__num {
  background: rgba(255, 255, 255, 0.16);
  color: var(--accent-neon);
}

.page-faq .faq-category {
  scroll-margin-top: calc(var(--header-h) + 16px);
  margin-bottom: 1.5rem;
  padding: 1.5rem 1.25rem;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-radius: 0.75rem;
  box-shadow: 0 2px 12px rgba(11, 29, 58, 0.05);
}

.page-faq .faq-category:target {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(245, 184, 0, 0.18);
}

.page-faq .faq-category__title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1.125rem;
  padding-bottom: 0.875rem;
  border-bottom: 2px solid var(--faq-ink);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.page-faq .faq-category__code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 1.875rem;
  background: var(--primary-bg);
  color: var(--accent-neon);
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
  font-weight: 700;
  font-size: 0.875rem;
}

.page-faq .faq-category .faq-item {
  margin-bottom: 0.75rem;
}

.page-faq .faq-category .faq-item:last-child {
  margin-bottom: 0;
}

.page-faq .faq-device-fig {
  margin: 1.5rem 0 0;
  padding-top: 1rem;
  border-top: 1px dashed var(--faq-line);
}

.page-faq .faq-device-fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--faq-line);
  border-radius: 0.625rem;
}

.page-faq .faq-device-fig__caption {
  margin-top: 0.625rem;
  font-size: 0.8125rem;
  text-align: center;
  letter-spacing: 0.03em;
  color: var(--faq-muted);
}

.page-faq .faq-assist {
  position: relative;
  overflow: hidden;
  padding: clamp(3rem, 6vw, 4.5rem) 0;
  background: var(--primary-bg);
  color: var(--text-primary);
}

.page-faq .faq-assist::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 52px 52px;
  opacity: 0.4;
}

.page-faq .faq-assist__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.page-faq .faq-assist__title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 900;
  letter-spacing: 0.01em;
}

.page-faq .faq-assist__desc {
  margin: 0;
  max-width: 60ch;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(230, 237, 247, 0.7);
}

.page-faq .faq-assist__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-faq .faq-assist__actions .btn {
  min-width: 160px;
  justify-content: center;
}

@media (min-width: 768px) {
  .page-faq .faq-search__inner {
    grid-template-columns: minmax(0, 1fr) 400px;
    gap: 3rem;
  }

  .page-faq .faq-catalog__inner {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 2.5rem;
  }

  .page-faq .faq-catalog__sidebar {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-catalog__nav {
    flex-direction: column;
    align-items: stretch;
  }

  .page-faq .faq-cat-link {
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
  }

  .page-faq .faq-assist__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
  }
}