.page-faq {
  --faq-panel: rgba(30, 58, 95, 0.38);
  --faq-line: rgba(192, 192, 192, 0.16);
  --faq-muted: #B0BEC5;
  background-color: var(--navy-800);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 36px 36px;
  padding: 3rem 1.25rem 5rem;
}

.page-faq .faq-shell {
  max-width: var(--container);
  margin: 0 auto;
}

.page-faq .breadcrumb {
  margin-bottom: 1.6rem;
  color: var(--faq-muted);
  font-size: 0.85rem;
}

.page-faq .breadcrumb__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
}

.page-faq .breadcrumb__item {
  display: flex;
  align-items: center;
}

.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--silver);
  opacity: 0.6;
}

.page-faq .breadcrumb__link {
  color: var(--silver);
  text-decoration: none;
}

.page-faq .breadcrumb__link:hover {
  color: var(--accent);
}

.page-faq .faq-hero {
  position: relative;
  margin-bottom: 2.8rem;
  padding: 1.8rem 0 1.6rem;
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 5.5rem;
  height: 3px;
  background: var(--accent);
}

.page-faq .faq-hero__label {
  margin: 0 0 0.8rem;
}

.page-faq .faq-hero h1 {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.4rem;
  line-height: 1.2;
  color: var(--white);
}

.page-faq .faq-hero__lead {
  max-width: 46rem;
  margin: 0;
  color: var(--faq-muted);
  font-size: 0.98rem;
  line-height: 1.85;
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.3rem;
}

.page-faq .data-chip {
  padding: 0.35rem 0.9rem;
  border: 1px solid rgba(255, 107, 53, 0.35);
  border-radius: 999px;
  background: rgba(255, 107, 53, 0.12);
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.page-faq .section-label {
  margin: 0 0 1rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-faq .faq-quick {
  margin-bottom: 3rem;
}

.page-faq .faq-quick__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 1.1rem;
}

.page-faq .faq-quick__coord {
  color: var(--faq-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.page-faq .quick-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
}

.page-faq .quick-card {
  position: relative;
  display: block;
  padding: 1.25rem 1.3rem;
  border: 1px solid var(--faq-line);
  border-radius: 10px;
  background: var(--faq-panel);
  color: var(--white);
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .quick-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: linear-gradient(120deg, transparent 58%, rgba(255, 107, 53, 0.14));
}

.page-faq .quick-card:hover,
.page-faq .quick-card:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(255, 107, 53, 0.6);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
  outline: none;
}

.page-faq .quick-card__index {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.page-faq .quick-card__title {
  display: block;
  margin-bottom: 0.4rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.page-faq .quick-card__desc {
  color: var(--faq-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.page-faq .faq-quick__fig {
  margin: 1rem 0 0;
}

.page-faq .faq-quick__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.page-faq .faq-manual {
  margin-bottom: 3rem;
}

.page-faq .faq-manual__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-faq .faq-manual__index {
  align-self: start;
  padding: 1.2rem 1.1rem;
  border: 1px solid var(--faq-line);
  border-radius: 10px;
  background: rgba(10, 20, 40, 0.55);
}

.page-faq .faq-manual__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-manual__index-list li {
  margin-bottom: 0.35rem;
}

.page-faq .faq-manual__index-list a {
  display: block;
  padding: 0.5rem 0.65rem;
  border-left: 2px solid transparent;
  border-radius: 0 6px 6px 0;
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-manual__index-list a:hover,
.page-faq .faq-manual__index-list a:focus-visible {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(255, 107, 53, 0.07);
  outline: none;
}

.page-faq .faq-manual__status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--faq-line);
  color: var(--faq-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.page-faq .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px rgba(46, 204, 113, 0.6);
}

.page-faq .faq-item {
  margin-bottom: 0.9rem;
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--faq-line);
  border-radius: 10px;
  background: var(--faq-panel);
  backdrop-filter: blur(6px);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-faq .faq-item[open] {
  border-left-color: var(--accent);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
}

.page-faq .faq-item__sum {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding: 1.15rem 1.2rem;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 500;
}

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

.page-faq .faq-item__sum::after {
  content: "+";
  margin-left: auto;
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
}

.page-faq .faq-item[open] .faq-item__sum::after {
  content: "–";
  color: var(--accent);
}

.page-faq .faq-item__sum:hover {
  color: var(--accent);
}

.page-faq .faq-item__sum:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  border-radius: 8px;
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.page-faq .faq-item__q {
  margin: 0;
  color: inherit;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.5;
}

.page-faq .faq-item__ans {
  padding: 1rem 1.2rem 1.3rem;
  border-top: 1px dashed var(--faq-line);
  color: var(--faq-muted);
  font-size: 0.94rem;
  line-height: 1.85;
}

.page-faq .faq-item__ans p {
  margin: 0 0 0.6rem;
  max-width: 62ch;
}

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

.page-faq .faq-item__ans a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-faq .faq-doc {
  margin: 0;
  padding: 1.2rem;
  border: 1px solid var(--faq-line);
  border-radius: 12px;
  background: rgba(10, 20, 40, 0.5);
}

.page-faq .faq-doc img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

.page-faq .faq-doc figcaption {
  margin-top: 0.8rem;
  color: var(--faq-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

@media (min-width: 640px) {
  .page-faq .quick-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-quick__fig {
    max-width: 320px;
  }

  .page-faq .faq-manual__index-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.3rem 0.6rem;
  }
}

@media (min-width: 900px) {
  .page-faq {
    padding: 3rem 2rem 5rem;
  }

  .page-faq .faq-hero h1 {
    font-size: 3rem;
  }

  .page-faq .faq-manual__grid {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 2rem;
  }

  .page-faq .faq-manual__index {
    position: sticky;
    top: 2rem;
  }

  .page-faq .faq-manual__index-list {
    display: block;
  }

  .page-faq .faq-doc {
    max-width: 480px;
  }
}