.page-faq {
  --faq-side-width: 300px;
  background-color: var(--bg-primary);
  background-image:
    linear-gradient(rgba(42, 51, 72, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 51, 72, 0.35) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text-primary);
  padding-bottom: 3rem;
}

.page-faq .faq-hero {
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--divider);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 260px;
  height: 260px;
  background: linear-gradient(135deg, transparent 42%, rgba(0, 229, 255, 0.07) 42%);
  clip-path: polygon(30% 0, 100% 0, 100% 70%);
  pointer-events: none;
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.page-faq .breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--accent-blue);
}

.page-faq .breadcrumb-sep {
  color: var(--divider);
}

.page-faq .breadcrumb-current {
  color: var(--accent-orange);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.25rem;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(1.85rem, 4vw, 2.8rem);
  line-height: 1.15;
  color: var(--text-primary);
  margin: 0;
}

.page-faq .faq-hero-title-sub {
  display: block;
  font-family: var(--font-data);
  font-size: 0.95rem;
  font-weight: 400;
  font-style: normal;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  margin-top: 0.6rem;
}

.page-faq .faq-hero-desc {
  margin: 1.1rem 0 0;
  font-size: 0.95rem;
  line-height: var(--body-line-height);
  color: var(--text-secondary);
  max-width: 560px;
}

.page-faq .faq-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  margin-top: 1.5rem;
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding-right: 1.25rem;
  border-right: 1px solid var(--divider);
}

.page-faq .faq-stat:last-child {
  border-right: none;
  padding-right: 0;
}

.page-faq .faq-stat .data-value {
  font-family: var(--font-data);
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent-orange);
  line-height: 1.1;
}

.page-faq .faq-stat span:last-child {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.page-faq .faq-hero-visual {
  display: none;
}

.page-faq .faq-hero-svg {
  width: 100%;
  height: auto;
  max-width: 340px;
  margin-left: auto;
}

.page-faq .faq-cat-tabs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--divider);
  margin-bottom: 2rem;
}

.page-faq .faq-cat-tabs > a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem 0.55rem 0.8rem;
  background: var(--bg-card);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  border-left: 3px solid transparent;
  transform: skewX(-8deg);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.page-faq .faq-cat-tabs > a span {
  position: relative;
  z-index: 1;
  transform: skewX(8deg);
}

.page-faq .faq-cat-tabs > a::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 80%, rgba(255, 106, 0, 0.22) 80%);
  pointer-events: none;
}

.page-faq .faq-cat-tabs > a:hover,
.page-faq .faq-cat-tabs > a:focus-visible {
  background: var(--bg-elevation);
  color: var(--text-primary);
  border-left-color: var(--accent-orange);
}

.page-faq .faq-tab-index {
  font-family: var(--font-data);
  font-size: 0.72rem;
  color: var(--accent-blue);
}

.page-faq .faq-cat-tip {
  display: inline-flex;
  align-items: center;
  margin-left: auto;
  padding: 0.35rem 0.9rem;
  font-size: 0.8rem;
  font-family: var(--font-body);
  color: var(--accent-orange);
  background: rgba(255, 106, 0, 0.1);
  border: 1px dashed var(--border-highlight);
}

.page-faq .faq-layout {
  display: grid;
  gap: 2rem;
  padding-bottom: 2rem;
}

.page-faq .faq-side {
  display: grid;
  gap: 1.25rem;
  align-content: start;
}

.page-faq .faq-side-card {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  padding: 1.25rem 1.25rem 0.75rem;
}

.page-faq .faq-side-card h2 {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  letter-spacing: 0.02em;
}

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

.page-faq .faq-side-list li {
  border-bottom: 1px dashed var(--divider);
}

.page-faq .faq-side-list li:last-child {
  border-bottom: none;
}

.page-faq .faq-side-list a {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.75rem 0.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background var(--transition-fast), padding-left var(--transition-fast), color var(--transition-fast);
}

.page-faq .faq-side-list a:hover,
.page-faq .faq-side-list a:focus-visible {
  color: var(--text-primary);
  background: linear-gradient(90deg, rgba(255, 106, 0, 0.1), transparent);
  padding-left: 0.5rem;
}

.page-faq .faq-side-list .exhibit-index {
  font-family: var(--font-data);
  font-size: 0.8rem;
  color: var(--accent-blue);
}

.page-faq .faq-count {
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 0.7rem;
  color: var(--text-secondary);
  background: var(--bg-elevation);
  padding: 0.15rem 0.45rem;
  white-space: nowrap;
}

.page-faq .faq-side-note {
  background: var(--bg-elevation);
  border-left: 3px solid var(--accent-orange);
  padding: 1rem;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.page-faq .faq-side-note p {
  margin: 0.6rem 0 0.75rem;
}

.page-faq .faq-side-note a {
  color: var(--accent-blue);
}

.page-faq .faq-side-note .btn {
  margin-top: 0.25rem;
}

.page-faq .faq-side-figure {
  margin: 0;
  background: var(--bg-card);
  border: 1px solid var(--divider);
}

.page-faq .faq-side-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-side-figure figcaption {
  padding: 0.6rem 0.8rem;
  font-size: 0.78rem;
  font-family: var(--font-data);
  color: var(--text-secondary);
  border-top: 1px dashed var(--divider);
}

.page-faq .faq-main {
  display: grid;
  gap: 2.5rem;
  min-width: 0;
}

.page-faq .faq-section-head {
  border-bottom: 1px solid var(--divider);
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
}

.page-faq .faq-section-head h2 {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 700;
  font-size: 1.5rem;
  margin: 0.3rem 0 0;
  color: var(--text-primary);
}

.page-faq .faq-section-head p {
  margin: 0.3rem 0 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.page-faq .exhibit-label {
  font-family: var(--font-data);
  font-size: 0.8rem;
  color: var(--accent-orange);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.page-faq .faq-item {
  background: var(--bg-card);
  border: 1px solid var(--divider);
  border-left: 3px solid transparent;
  margin-bottom: 0.75rem;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.page-faq .faq-item[open] {
  background: var(--bg-elevation);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  padding: 1rem 1.1rem;
  list-style: none;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-primary);
  user-select: none;
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: -2px;
}

.page-faq .faq-item summary::after {
  content: "＋";
  font-family: var(--font-data);
  font-size: 1rem;
  color: var(--accent-blue);
  flex-shrink: 0;
  transition: transform var(--transition-base), color var(--transition-fast);
}

.page-faq .faq-item[open] summary::after {
  content: "－";
  color: var(--accent-orange);
  transform: rotate(180deg);
}

.page-faq .faq-answer {
  padding: 0.75rem 1.1rem 1.1rem 1.2rem;
  border-top: 1px dashed var(--divider);
  font-size: 0.9rem;
  line-height: var(--body-line-height);
  color: var(--text-secondary);
}

.page-faq .faq-answer p {
  margin: 0 0 0.5rem;
}

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

.page-faq .faq-hot {
  margin: 2.5rem 0 3rem;
  padding: 1.75rem 1.25rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--divider);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hot::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 180px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-blue));
}

.page-faq .faq-hot-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.page-faq .faq-hot-head h2 {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 700;
  font-size: 1.55rem;
  margin: 0;
  color: var(--text-primary);
}

.page-faq .faq-hot-grid {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-hot-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1.25rem;
  background: var(--bg-primary);
  border: 1px solid var(--divider);
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.page-faq .faq-hot-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-2px);
}

.page-faq .faq-hot-card.featured {
  border-left: 3px solid var(--accent-orange);
}

.page-faq .faq-hot-index {
  font-family: var(--font-data);
  font-size: 0.8rem;
  color: var(--accent-blue);
}

.page-faq .faq-hot-card h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.4;
  margin: 0;
  color: var(--text-primary);
}

.page-faq .faq-hot-card p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-secondary);
  flex-grow: 1;
}

.page-faq .faq-hot-figure {
  margin: 0;
  background: var(--bg-primary);
  border: 1px solid var(--divider);
}

.page-faq .faq-hot-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-hot-figure figcaption {
  padding: 0.6rem 0.8rem;
  font-size: 0.78rem;
  font-family: var(--font-data);
  color: var(--text-secondary);
  border-top: 1px dashed var(--divider);
}

.page-faq .faq-support {
  display: grid;
  gap: 2rem;
  padding: 2rem 1.5rem;
  background: linear-gradient(135deg, var(--bg-elevation) 0%, var(--bg-card) 100%);
  border: 1px solid var(--divider);
  border-left: 3px solid var(--accent-blue);
}

.page-faq .faq-support .faq-section-head {
  border-bottom-color: transparent;
  padding-bottom: 0;
  margin-bottom: 1rem;
}

.page-faq .faq-support .faq-section-head p {
  max-width: 520px;
}

.page-faq .faq-contact-list {
  list-style: none;
  margin: 1.25rem 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-faq .faq-contact-list li {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 0.75rem;
  align-items: baseline;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--divider);
}

.page-faq .faq-contact-list li:last-child {
  border-bottom: none;
}

.page-faq .faq-contact-list .contact-label {
  font-family: var(--font-data);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-blue);
}

.page-faq .faq-contact-value {
  font-size: 0.9rem;
  color: var(--text-primary);
  word-break: break-all;
}

.page-faq .faq-support .btn {
  margin-top: 0.25rem;
}

.page-faq .faq-support-visual {
  display: none;
}

.page-faq .faq-support-svg {
  width: 100%;
  height: auto;
  max-width: 360px;
  margin-left: auto;
}

.page-faq .btn-outline {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.page-faq .btn-outline:hover,
.page-faq .btn-outline:focus-visible {
  background: rgba(0, 229, 255, 0.08);
  color: var(--accent-blue);
}

@media (min-width: 768px) {
  .page-faq .faq-hot-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }

  .page-faq .faq-hero-visual {
    display: block;
  }

  .page-faq .faq-support {
    grid-template-columns: 1fr 0.7fr;
    align-items: center;
  }

  .page-faq .faq-support-visual {
    display: block;
  }
}

@media (min-width: 992px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-side-width) 1fr;
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-height) + 1.5rem);
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hot-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}