.page-faq {
  background: var(--c-cool);
  color: var(--c-navy);
  font-family: var(--f-body);
  overflow-x: clip;
}

.page-faq a {
  color: var(--c-red);
}

/* ---------- 顶部 ---------- */

.page-faq .faq-top {
  position: relative;
  background: var(--c-navy);
  color: var(--c-white);
  padding-top: calc(var(--h-bar) + 44px);
}

.page-faq .faq-top::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-faq .faq-top::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 38%;
  height: 6px;
  background: var(--c-red);
}

.page-faq .faq-top__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
  font-family: var(--f-mono);
  font-size: var(--fs-xs);
  letter-spacing: .08em;
  color: var(--c-steel);
}

.page-faq .faq-crumbs a {
  color: var(--c-steel);
  text-decoration: none;
}

.page-faq .faq-crumbs a:hover {
  color: var(--c-cyan);
}

.page-faq .faq-crumbs__sep {
  color: var(--c-red);
}

.page-faq .faq-top__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-bottom: 52px;
}

.page-faq .faq-top__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--f-mono);
  font-size: var(--fs-xs);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .faq-top__kicker::before {
  content: "";
  width: 30px;
  height: 3px;
  background: var(--c-red);
}

.page-faq .faq-top__title {
  margin: 14px 0 0;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(30px, 6.6vw, 62px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-faq .faq-top__title em {
  font-style: normal;
  color: var(--c-red-lift);
}

.page-faq .faq-top__lead {
  margin: 20px 0 0;
  max-width: 620px;
  color: rgba(244, 246, 249, .82);
}

.page-faq .faq-quick {
  background: var(--c-navy-2);
  border: 2px solid rgba(255, 255, 255, .16);
  box-shadow: 6px 6px 0 var(--c-red-deep);
  padding: 20px 20px 8px;
}

.page-faq .faq-quick__title {
  margin: 0 0 6px;
  font-family: var(--f-mono);
  font-size: var(--fs-xs);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .faq-quick__item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: baseline;
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, .14);
  color: var(--c-white);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-quick__item:hover,
.page-faq .faq-quick__item:focus-visible {
  color: var(--c-cyan);
}

.page-faq .faq-quick__num {
  font-family: var(--f-mono);
  font-size: var(--fs-xs);
  color: var(--c-red);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-quick__text {
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.page-faq .faq-quick__arrow {
  font-family: var(--f-mono);
  color: var(--c-steel);
}

.page-faq .faq-quick__item:hover .faq-quick__arrow {
  color: var(--c-cyan);
}

.page-faq .faq-slant {
  height: 44px;
  background: var(--c-navy);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}

/* ---------- 主壳 ---------- */

.page-faq .faq-shell {
  padding-top: 44px;
  padding-bottom: 72px;
}

.page-faq .faq-shell__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

/* ---------- 左侧目录 ---------- */

.page-faq .faq-rail {
  background: var(--c-white);
  border: 2px solid var(--c-navy);
  box-shadow: var(--hard);
  padding: 18px;
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--f-mono);
  font-size: var(--fs-xs);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-red);
}

.page-faq .faq-search__field {
  width: 100%;
  box-sizing: border-box;
  padding: 11px 12px;
  border: 2px solid var(--c-line);
  border-radius: 0;
  background: var(--c-cool);
  color: var(--c-navy);
  font-family: var(--f-body);
  font-size: var(--fs-sm);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-search__field::placeholder {
  color: var(--c-steel);
}

.page-faq .faq-search__field:focus {
  outline: none;
  border-color: var(--c-cyan);
  background: var(--c-white);
}

.page-faq .faq-toc {
  display: grid;
  gap: 2px;
  margin: 18px -18px 0;
  border-top: 2px solid var(--c-navy);
}

.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 12px 18px;
  border-left: 4px solid transparent;
  color: var(--c-navy);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  background: var(--c-cool);
  border-left-color: var(--c-red);
  color: var(--c-red);
}

.page-faq .faq-toc__num {
  font-family: var(--f-mono);
  font-size: var(--fs-xs);
  font-variant-numeric: tabular-nums;
  color: var(--c-steel);
}

.page-faq .faq-rail__foot {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 2px solid var(--c-line);
}

.page-faq .faq-rail__hint {
  margin: 0 0 12px;
  font-size: var(--fs-xs);
  line-height: 1.7;
  color: var(--c-steel);
}

.page-faq .faq-rail__btn {
  width: 100%;
  text-align: center;
}

/* ---------- 问答主体 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: 56px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--h-bar) + 16px);
  min-width: 0;
}

.page-faq .faq-group__head {
  margin-bottom: 22px;
}

.page-faq .faq-group__num {
  display: block;
  font-family: var(--f-mono);
  font-size: var(--fs-xs);
  letter-spacing: .2em;
  color: var(--c-red);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__title {
  margin: 8px 0 0;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: var(--fs-lg);
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--c-navy);
}

.page-faq .faq-group__slash {
  display: block;
  width: 148px;
  height: 12px;
  margin-top: 14px;
  background: var(--c-red);
  clip-path: polygon(0 0, 100% 0, calc(100% - 26px) 100%, 0 100%);
}

.page-faq .faq-group--split .faq-group__slash {
  background: var(--c-navy);
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  position: relative;
  margin: 0 0 22px;
  border: 2px solid var(--c-navy);
  background: var(--c-navy-2);
  overflow: hidden;
}

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

.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 10px;
  background: var(--checker);
  background-size: var(--checker-size);
  opacity: .92;
}

.page-faq .faq-figure__cap {
  padding: 12px 16px 22px;
  font-size: var(--fs-xs);
  line-height: 1.7;
  color: rgba(244, 246, 249, .78);
  background: var(--c-navy-2);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-acc {
  border: 2px solid var(--c-navy);
  border-left: 4px solid var(--c-line);
  background: var(--c-white);
  margin-bottom: 14px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-acc:hover {
  border-left-color: var(--c-red);
}

.page-faq .faq-acc[open] {
  border-left-color: var(--c-red);
  box-shadow: var(--hard);
}

.page-faq .faq-acc__q {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: start;
  padding: 16px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-acc__q:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-faq .faq-acc__mark {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  background: var(--c-red);
  color: var(--c-white);
  font-family: var(--f-mono);
  font-size: var(--fs-xs);
  line-height: 1;
}

.page-faq .faq-acc__text {
  font-size: var(--fs-md);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-navy);
}

.page-faq .faq-acc__sign {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 4px;
}

.page-faq .faq-acc__sign::before,
.page-faq .faq-acc__sign::after {
  content: "";
  position: absolute;
  background: var(--c-navy);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-acc__sign::before {
  left: 0;
  top: 9px;
  width: 20px;
  height: 2px;
}

.page-faq .faq-acc__sign::after {
  left: 9px;
  top: 0;
  width: 2px;
  height: 20px;
}

.page-faq .faq-acc[open] .faq-acc__sign::before {
  background: var(--c-red);
}

.page-faq .faq-acc[open] .faq-acc__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-acc__body {
  padding: 0 16px 20px 52px;
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: var(--c-navy);
}

.page-faq .faq-acc__body p {
  margin: 0;
  max-width: 720px;
}

.page-faq .faq-acc__body a {
  color: var(--c-red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-group__more {
  margin: 20px 0 0;
  padding-left: 16px;
  border-left: 4px solid var(--c-cyan);
  font-size: var(--fs-xs);
  line-height: 1.8;
  color: var(--c-steel);
}

.page-faq .faq-group__more a {
  color: var(--c-red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 帮助面板 ---------- */

.page-faq .faq-help {
  position: relative;
  scroll-margin-top: calc(var(--h-bar) + 16px);
  background: var(--c-navy);
  color: var(--c-white);
  border: 2px solid var(--c-navy);
  padding: 32px 20px 28px;
  overflow: hidden;
}

.page-faq .faq-help__checker {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10px;
  background: var(--checker);
  background-size: var(--checker-size);
}

.page-faq .faq-help__title {
  margin: 18px 0 0;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: var(--fs-lg);
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--c-white);
}

.page-faq .faq-help__text {
  margin: 14px 0 0;
  max-width: 620px;
  font-size: var(--fs-sm);
  line-height: 1.85;
  color: rgba(244, 246, 249, .82);
}

.page-faq .faq-help__list {
  margin: 24px 0 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, .16);
}

.page-faq .faq-help__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .16);
}

.page-faq .faq-help__label {
  font-family: var(--f-mono);
  font-size: var(--fs-xs);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .faq-help__value {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: var(--fs-sm);
  color: var(--c-white);
  word-break: break-word;
}

.page-faq .faq-help__copy {
  flex: none;
}

.page-faq .faq-help__copy[data-copied="true"] {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
}

.page-faq .faq-help__foot {
  margin: 22px 0 0;
  font-size: var(--fs-xs);
  line-height: 1.8;
  color: rgba(244, 246, 249, .7);
}

.page-faq .faq-help__foot a {
  color: var(--c-red-lift);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-top {
    padding-top: calc(var(--h-bar) + 64px);
  }

  .page-faq .faq-top__grid {
    grid-template-columns: 7fr 5fr;
    gap: 44px;
    align-items: end;
    padding-bottom: 64px;
  }

  .page-faq .faq-acc__q {
    padding: 20px 24px;
  }

  .page-faq .faq-acc__body {
    padding: 0 24px 24px 64px;
  }

  .page-faq .faq-help {
    padding: 40px 36px 34px;
  }

  .page-faq .faq-help__row {
    grid-template-columns: 140px 1fr;
    align-items: baseline;
    gap: 20px;
  }

  .page-faq .faq-slant {
    height: 64px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    padding-top: 64px;
    padding-bottom: 96px;
  }

  .page-faq .faq-shell__grid {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--h-bar) + 20px);
    padding: 20px;
  }

  .page-faq .faq-toc {
    margin-left: -20px;
    margin-right: -20px;
  }

  .page-faq .faq-toc__link {
    padding: 12px 20px;
  }

  .page-faq .faq-body {
    gap: 72px;
  }

  .page-faq .faq-figure {
    margin-bottom: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-acc,
  .page-faq .faq-acc__sign::before,
  .page-faq .faq-acc__sign::after,
  .page-faq .faq-toc__link,
  .page-faq .faq-search__field,
  .page-faq .faq-quick__item {
    transition: none;
  }
}