.page-faq {
  --faq-rail: 236px;
  --faq-gap: clamp(1.75rem, 4vw, 3.5rem);
  --faq-pad: clamp(1.25rem, 3.5vw, 2.5rem);
  position: relative;
  background:
    radial-gradient(1100px 520px at 84% -6%, rgba(200, 150, 62, 0.10), transparent 62%),
    radial-gradient(900px 520px at -8% 46%, rgba(79, 169, 140, 0.07), transparent 60%),
    var(--ink-900);
  color: #C3CFDA;
  font-family: var(--font-body);
}

.page-faq .wrap {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--edge);
}

.page-faq [hidden] {
  display: none !important;
}

.page-faq .empty {
  display: block;
}

/* ---------- 面包屑 ---------- */

.page-faq .breadcrumb {
  padding-top: clamp(1.25rem, 3vw, 2.25rem);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
}

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

.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin: 0 0.5rem;
  color: var(--ink-700);
}

.page-faq .breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--amber-bright);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: end;
}

.page-faq .eyebrow {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--amber);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.125rem, 8.5vw, 4.5rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__title span {
  font-weight: 300;
  color: var(--amber-bright);
}

.page-faq .faq-hero__lede {
  max-width: 36rem;
  margin: 1.5rem 0 0;
  font-size: 1.0625rem;
  line-height: 1.95;
  color: #A9B7C4;
}

.page-faq .faq-hero__meta {
  margin: 1.5rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure .figure__frame,
.page-faq .faq-search__figure .figure__frame {
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
}

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

.page-faq .faq-hero__figure .figure__cap,
.page-faq .faq-search__figure .figure__cap {
  margin-top: 0.75rem;
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 检索区 ---------- */

.page-faq .faq-search {
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-search__panel {
  display: grid;
  gap: 1.5rem;
  padding: var(--faq-pad);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(155deg, rgba(23, 50, 74, 0.88), rgba(14, 34, 51, 0.72));
  backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.page-faq .faq-search__num {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--amber);
}

.page-faq .faq-search__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-search__hint {
  margin: 0.75rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: #A9B7C4;
}

.page-faq .faq-search__field {
  min-width: 0;
}

.page-faq .filter__field {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line-amber);
  border-bottom-width: 2px;
  border-radius: var(--radius);
  background: rgba(14, 34, 51, 0.7);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .filter__field:focus-within {
  border-color: var(--amber-bright);
  box-shadow: 0 0 0 3px rgba(200, 150, 62, 0.16);
}

.page-faq .filter__icon {
  display: inline-flex;
  flex: none;
  color: var(--amber);
}

.page-faq .filter__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  outline: none;
}

.page-faq .filter__input::placeholder {
  color: var(--muted);
}

.page-faq .filter__count {
  margin: 0.8rem 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-search__empty {
  margin: 0.6rem 0 0;
  padding: 0.75rem 1rem;
  border-left: 2px solid var(--celadon);
  background: rgba(79, 169, 140, 0.1);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--celadon-light);
}

.page-faq .faq-search__terms {
  margin: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.875rem;
  line-height: 2;
  color: #A9B7C4;
}

.page-faq .faq-search__terms span {
  margin-right: 0.75rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-search__figure {
  margin: 0;
}

.page-faq .faq-search__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 220px;
  object-fit: cover;
}

/* ---------- 主体分栏 ---------- */

.page-faq .faq-body {
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

/* 目录 */

.page-faq .faq-toc {
  padding: 1.25rem 1.25rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(23, 50, 74, 0.5);
}

.page-faq .toc__label {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-faq .toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.125rem;
}

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

.page-faq .toc__link {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.6rem 0.25rem 0.6rem 0.85rem;
  color: #C3CFDA;
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .toc__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--amber);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.24s ease, background-color 0.24s ease;
}

.page-faq .toc__link:hover::before,
.page-faq .toc__link:focus-visible::before {
  background: var(--line-amber);
  transform: scaleY(0.5);
}

.page-faq .toc__link[data-current] {
  color: var(--amber-bright);
}

.page-faq .toc__link[data-current]::before {
  background: var(--amber);
  transform: scaleY(1);
}

.page-faq .toc__link:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-faq .faq-toc__label {
  font-size: 0.9375rem;
  line-height: 1.6;
}

.page-faq .faq-toc__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}

.page-faq .faq-toc__foot {
  margin: 1.25rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 11px;
  line-height: 1.8;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 分组 ---------- */

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding-top: clamp(2.5rem, 5vw, 4rem);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 0.35rem 1rem;
  margin-bottom: 1.5rem;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: clamp(1.75rem, 4.5vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.375rem, 3.4vw, 1.875rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__desc {
  grid-column: 2;
  margin: 0.5rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */

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

.page-faq .fold__item {
  border-bottom: 1px solid var(--line);
}

.page-faq .fold__btn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 0.4rem 1rem;
  padding: 1.15rem 0.25rem;
  list-style: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

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

.page-faq .fold__btn::marker {
  content: "";
}

.page-faq .fold__btn:hover {
  background: rgba(200, 150, 62, 0.05);
}

.page-faq .fold__btn:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-faq .fold__index {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: clamp(1.125rem, 2.6vw, 1.5rem);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-faq .fold__text {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.65;
  color: #DCE4EC;
  transition: color 0.2s ease;
}

.page-faq .fold__item[open] .fold__text {
  color: var(--paper);
  font-weight: 800;
}

.page-faq .fold__icon {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 0.55rem;
  flex: none;
}

.page-faq .fold__icon::before,
.page-faq .fold__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--amber);
  transition: transform 0.24s ease, background-color 0.24s ease;
}

.page-faq .fold__icon::after {
  transform: rotate(90deg);
}

.page-faq .fold__item[open] .fold__icon::after {
  transform: rotate(0deg);
}

.page-faq .fold__item[open] .fold__icon::before,
.page-faq .fold__item[open] .fold__icon::after {
  background: var(--amber-bright);
}

.page-faq .fold__panel {
  overflow: hidden;
}

.page-faq .fold__inner {
  padding: 0 0 1.5rem 0;
}

.page-faq .fold__item[open] .fold__inner {
  animation: faq-slide 0.26s ease both;
}

@keyframes faq-slide {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .fold__body {
  padding: 1.1rem 1.25rem;
  border-left: 2px solid var(--celadon);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--text-ink);
  font-size: 0.9375rem;
  line-height: 1.9;
}

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

.page-faq .fold__body p + p {
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--paper-dim);
}

/* ---------- 还没解决 ---------- */

.page-faq .faq-help {
  display: grid;
  gap: 1.25rem;
}

.page-faq .faq-help__card {
  padding: 1.5rem 1.35rem;
  border-radius: var(--radius);
}

.page-faq .faq-help__card--dark {
  border: 1px solid var(--line);
  background: rgba(23, 50, 74, 0.66);
  color: #C3CFDA;
}

.page-faq .faq-help__tag {
  margin: 0 0 0.6rem;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-help .card__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.125rem, 2.4vw, 1.375rem);
  line-height: 1.35;
}

.page-faq .faq-help__text {
  margin: 0 0 0.9rem;
  font-size: 0.9375rem;
  line-height: 1.9;
}

.page-faq .faq-help__facts {
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.4rem;
  font-size: 0.875rem;
  line-height: 1.8;
}

.page-faq .faq-help__facts li:first-child,
.page-faq .faq-help__facts li:nth-child(2) {
  color: var(--amber-ink);
}

.page-faq .faq-help__card--dark .faq-help__facts li:first-child,
.page-faq .faq-help__card--dark .faq-help__facts li:nth-child(2) {
  color: var(--amber-bright);
}

.page-faq .faq-group__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin: 2rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line-amber);
  font-size: 0.875rem;
}

.page-faq .faq-group__link {
  color: #C3CFDA;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-group__link:hover,
.page-faq .faq-group__link:focus-visible {
  color: var(--amber-bright);
  border-bottom-color: var(--amber);
}

.page-faq .faq-group__sep {
  color: var(--ink-700);
}

/* ---------- 返回顶部 ---------- */

.page-faq .to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 20;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--line-amber);
  border-radius: var(--radius);
  background: rgba(14, 34, 51, 0.88);
  backdrop-filter: blur(8px);
  color: var(--amber);
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .to-top:hover,
.page-faq .to-top:focus-visible {
  color: var(--amber-bright);
  border-color: var(--amber-bright);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-search__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    align-items: start;
    gap: 1.75rem 2.5rem;
  }

  .page-faq .faq-search__terms,
  .page-faq .faq-search__figure {
    grid-column: 1 / -1;
  }

  .page-faq .faq-help {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .page-faq .fold__inner {
    padding-left: 2.6rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 3rem;
  }

  .page-faq .faq-hero__figure {
    margin-bottom: 0.25rem;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(2.5rem, 5vw, 4.5rem);
  }

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

  .page-faq .fold__btn {
    padding: 1.35rem 0.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .fold__item[open] .fold__inner {
    animation: none;
  }

  .page-faq .toc__link::before,
  .page-faq .fold__icon::before,
  .page-faq .fold__icon::after,
  .page-faq .filter__field,
  .page-faq .fold__btn,
  .page-faq .to-top {
    transition: none;
  }
}