.page-faq {
  --faq-scan-track: rgba(212, 175, 55, 0.14);
  --faq-glow-gold: rgba(212, 175, 55, 0.55);
  background: var(--color-black);
  color: var(--color-ivory);
  font-family: var(--font-body);
  line-height: 1.7;
}

.page-faq__hero {
  padding: 2rem 0 0;
}

.page-faq__hero-frame {
  position: relative;
  background:
    linear-gradient(180deg, rgba(212, 175, 55, 0.09) 0%, rgba(212, 175, 55, 0) 34%),
    var(--color-blue);
  border: 3px solid var(--color-gold);
  box-shadow: 12px 12px 0 rgba(0, 0, 0, 0.85);
  padding: 2rem 1.25rem 1.75rem;
  overflow: hidden;
}

.page-faq__hero-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    rgba(212, 175, 55, 0.03) 3px,
    rgba(212, 175, 55, 0.03) 4px
  );
}

.page-faq__hero-frame::after {
  content: "";
  position: absolute;
  top: 10px;
  right: 10px;
  width: 42px;
  height: 42px;
  border-top: 3px solid var(--color-gold-light);
  border-right: 3px solid var(--color-gold-light);
  opacity: 0.7;
  pointer-events: none;
}

.page-faq__hero-grid {
  display: grid;
  gap: 1.5rem;
  align-items: end;
  position: relative;
  z-index: 1;
}

.page-faq__hero-main .site-kicker {
  color: var(--color-gold-light);
  letter-spacing: 0.12em;
  font-family: var(--font-heading);
  text-transform: uppercase;
}

.page-faq__hero-main h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 4.5vw, 3.1rem);
  line-height: 1.14;
  color: var(--color-white);
  margin: 0.5rem 0 1rem;
  text-wrap: balance;
}

.page-faq__hero-lead {
  color: var(--color-mist);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  max-width: 740px;
  margin: 0;
}

.page-faq__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.page-faq__meta-num {
  color: var(--color-gold-light);
  font-family: var(--font-heading);
  letter-spacing: 0.08em;
  font-size: 0.95rem;
}

.page-faq__hero-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1rem;
}

.page-faq__hero-vtext {
  writing-mode: vertical-rl;
  font-family: var(--font-heading);
  letter-spacing: 0.3em;
  color: var(--color-gold-light);
  font-size: 0.85rem;
  opacity: 0.8;
}

.page-faq__hero-blockindex {
  font-family: var(--font-heading);
  font-size: 3.4rem;
  line-height: 1;
  color: var(--color-gold);
  text-shadow: 3px 3px 0 rgba(0, 0, 0, 0.55);
}

.page-faq__main {
  padding: var(--space-4) 0 var(--space-5);
  position: relative;
}

.page-faq__main::before {
  content: "";
  display: block;
  height: 4px;
  margin-bottom: var(--space-4);
  background: repeating-linear-gradient(
    90deg,
    var(--color-gold) 0,
    var(--color-gold) 10px,
    transparent 10px,
    transparent 20px
  );
}

.page-faq__search {
  max-width: 680px;
  margin: 0 auto var(--space-4);
  position: relative;
}

.page-faq__search-label {
  display: inline-block;
  background: var(--color-gold);
  border: 2px solid var(--color-gold-light);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.7);
  color: var(--color-black);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  padding: 0.2rem 0.8rem;
  margin-bottom: 0.6rem;
}

.page-faq__search-input {
  width: 100%;
  box-sizing: border-box;
  background: var(--color-blue);
  border: 3px solid var(--color-gold);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.8);
  color: var(--color-ivory);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  padding: 1rem 1.25rem;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq__search-input:focus {
  border-color: var(--color-gold-light);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.8), 0 0 0 3px rgba(212, 175, 55, 0.25);
}

.page-faq__search-input::placeholder {
  color: var(--color-mist);
  opacity: 0.7;
}

.page-faq__search-hint {
  margin: 0.75rem 0 0;
  color: var(--color-mist);
  font-size: 0.88rem;
  text-align: right;
}

.page-faq__layout {
  display: grid;
  gap: 2rem;
  margin-top: var(--space-3);
}

.page-faq__cats {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.75rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scrollbar-width: thin;
  scrollbar-color: var(--color-gold) var(--color-blue-2);
}

.page-faq__cats::-webkit-scrollbar {
  height: 6px;
}

.page-faq__cats::-webkit-scrollbar-thumb {
  background: var(--color-gold);
}

.page-faq__cats::-webkit-scrollbar-track {
  background: var(--color-blue-2);
}

.page-faq__cat-radio {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.page-faq__cat {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  flex: 0 0 auto;
  padding: 0.85rem 1.1rem;
  background: var(--color-blue);
  border: 2px solid var(--color-gold);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.8);
  color: var(--color-ivory);
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.page-faq__cat:hover {
  background: var(--color-blue-2);
  transform: translate(1px, 1px);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.8);
}

.page-faq__cat-radio:checked + .page-faq__cat {
  background: var(--color-gold);
  border-color: var(--color-gold-light);
  color: var(--color-black);
  box-shadow: 4px 4px 0 rgba(212, 175, 55, 0.4);
}

.page-faq__cat-num {
  display: inline-grid;
  place-items: center;
  min-width: 1.7rem;
  height: 1.7rem;
  padding: 0 0.3rem;
  background: var(--color-black);
  border: 1px solid var(--color-gold-deep);
  color: var(--color-gold-light);
  font-family: var(--font-heading);
  font-size: 0.78rem;
}

.page-faq__cat-radio:checked + .page-faq__cat .page-faq__cat-num {
  background: var(--color-black);
  color: var(--color-gold-light);
  border-color: var(--color-gold-deep);
}

.page-faq__qa {
  min-width: 0;
}

.page-faq__group {
  display: block;
}

.page-faq__group + .page-faq__group {
  margin-top: 3rem;
}

.page-faq__group-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--color-gold);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-ivory);
}

.page-faq .section-num {
  display: inline-grid;
  place-items: center;
  min-width: 2.6rem;
  height: 2.6rem;
  background: var(--color-gold);
  border: 2px solid var(--color-gold-light);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.6);
  color: var(--color-black);
  font-family: var(--font-heading);
  font-size: 1rem;
  padding: 0 0.3rem;
}

.page-faq__item {
  background: var(--color-blue);
  border: 3px solid var(--color-gold);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.85);
  margin-bottom: 1.25rem;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.page-faq__item[open] {
  background: var(--color-blue-2);
  border-color: var(--color-gold-light);
}

.page-faq__item-summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--color-ivory);
  user-select: none;
}

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

.page-faq__item-summary:hover {
  background: rgba(212, 175, 55, 0.07);
}

.page-faq__q-num {
  flex: 0 0 auto;
  width: 2.4rem;
  height: 2.4rem;
  display: grid;
  place-items: center;
  background: var(--color-black);
  border: 2px solid var(--color-gold);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.8);
  color: var(--color-gold-light);
  font-family: var(--font-heading);
  font-size: 0.9rem;
}

.page-faq__item[open] .page-faq__q-num {
  background: var(--color-gold);
  color: var(--color-black);
  border-color: var(--color-gold-light);
}

.page-faq__q-text {
  flex: 1 1 auto;
}

.page-faq__q-icon {
  flex: 0 0 auto;
  position: relative;
  width: 1.4rem;
  height: 1.4rem;
}

.page-faq__q-icon::before,
.page-faq__q-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--color-gold);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.page-faq__q-icon::before {
  width: 16px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq__q-icon::after {
  width: 2px;
  height: 16px;
  transform: translate(-50%, -50%);
}

.page-faq__item[open] .page-faq__q-icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq__item-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s ease;
}

.page-faq__item[open] .page-faq__item-a {
  grid-template-rows: 1fr;
}

.page-faq__item-a-inner {
  overflow: hidden;
  margin-left: 3.4rem;
  padding: 0 1.5rem 1.25rem 1.25rem;
  border-left: 3px solid var(--color-gold);
  color: var(--color-mist);
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.75;
}

.page-faq__item-a-inner p {
  margin: 0;
}

.page-faq__item-a-inner p + p {
  margin-top: 0.75rem;
}

.page-faq__item-a-inner a {
  color: var(--color-gold-light);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq__figure {
  margin: 2rem 0 0;
  background: var(--color-black);
  border: 3px solid var(--color-gold);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.85);
  padding: 0.75rem;
}

.page-faq__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--color-gold-deep);
}

.page-faq__figure figcaption {
  padding: 0.75rem 0.25rem 0.25rem;
  color: var(--color-mist);
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.55;
}

.page-faq__contact {
  padding: 0 0 var(--space-5);
}

.page-faq__contact-panel {
  position: relative;
  display: grid;
  gap: 2rem;
  background:
    linear-gradient(135deg, rgba(212, 175, 55, 0.08) 0%, rgba(212, 175, 55, 0) 48%),
    var(--color-blue-2);
  border: 3px solid var(--color-gold);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, 0.85);
  padding: 2rem 1.25rem;
  overflow: hidden;
}

.page-faq__contact-panel::after {
  content: "";
  position: absolute;
  right: -42px;
  top: -42px;
  width: 110px;
  height: 110px;
  border: 3px solid rgba(212, 175, 55, 0.3);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-faq__contact-copy {
  position: relative;
  z-index: 1;
}

.page-faq__contact-copy .site-kicker {
  color: var(--color-gold-light);
  font-family: var(--font-heading);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.page-faq__contact-copy h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1.2;
  color: var(--color-gold-light);
  margin: 0.5rem 0 1rem;
}

.page-faq__contact-copy p {
  color: var(--color-mist);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  max-width: 54ch;
}

.page-faq__contact-list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.9rem;
  align-content: start;
}

.page-faq__contact-row {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--color-black);
  border: 2px solid var(--color-gold-deep);
  padding: 0.9rem 1rem;
  color: var(--color-ivory);
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.5;
  word-break: break-word;
}

.page-faq__contact-row-label {
  flex: 0 0 auto;
  min-width: 3.2rem;
  color: var(--color-gold);
  font-family: var(--font-heading);
  letter-spacing: 0.06em;
  font-size: 0.9rem;
}

.page-faq__notice {
  border-top: 3px solid var(--color-gold);
  background: var(--color-blue);
  padding: 1.5rem 0;
  color: var(--color-mist);
  font-family: var(--font-body);
  font-size: 0.92rem;
}

.page-faq__notice-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

.page-faq__notice-inner p {
  margin: 0;
}

.page-faq__notice-inner a {
  color: var(--color-gold-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 分类筛选：基于 CSS :has() 的渐进增强 */
.page-faq__group {
  display: block;
}

.page-faq__cats:has(#faq-cat-replay:checked) ~ .page-faq__qa .page-faq__group {
  display: none;
}

.page-faq__cats:has(#faq-cat-replay:checked) ~ .page-faq__qa .page-faq__group[data-faq-tag="replay"] {
  display: block;
}

.page-faq__cats:has(#faq-cat-room:checked) ~ .page-faq__qa .page-faq__group {
  display: none;
}

.page-faq__cats:has(#faq-cat-room:checked) ~ .page-faq__qa .page-faq__group[data-faq-tag="room"] {
  display: block;
}

.page-faq__cats:has(#faq-cat-page:checked) ~ .page-faq__qa .page-faq__group {
  display: none;
}

.page-faq__cats:has(#faq-cat-page:checked) ~ .page-faq__qa .page-faq__group[data-faq-tag="page"] {
  display: block;
}

.page-faq__cats:has(#faq-cat-account:checked) ~ .page-faq__qa .page-faq__group {
  display: none;
}

.page-faq__cats:has(#faq-cat-account:checked) ~ .page-faq__qa .page-faq__group[data-faq-tag="account"] {
  display: block;
}

@media (min-width: 900px) {
  .page-faq__hero-frame {
    padding: 2.5rem 2.5rem 2rem;
  }

  .page-faq__hero-grid {
    grid-template-columns: minmax(0, 1fr) 200px;
    align-items: end;
  }

  .page-faq__layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }

  .page-faq__cats {
    flex-direction: column;
    align-items: stretch;
    position: sticky;
    top: 110px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq__cat {
    flex: 0 0 auto;
    justify-content: space-between;
  }

  .page-faq__contact-panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    padding: 2.5rem 3rem;
  }

  .page-faq__notice-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}