.page-faq {
  --faq-rail: 292px;
  --faq-gap: 64px;
  --faq-line: rgba(143, 165, 188, 0.22);
  --faq-line-soft: rgba(143, 165, 188, 0.14);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbwrap {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 68px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--faq-line-soft) 0.5px, transparent 0.5px),
    linear-gradient(90deg, var(--faq-line-soft) 0.5px, transparent 0.5px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 78%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 78%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  top: 12%;
  width: 46%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.45));
  transform: rotate(-9deg);
  transform-origin: right center;
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 18px;
  font-size: clamp(2rem, 5.4vw, 4.2rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__main .lede {
  max-width: 60ch;
  color: var(--c-steel);
  line-height: 1.8;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__panel {
  align-self: stretch;
}

.page-faq .faq-facts {
  margin: 0;
  display: block;
}

.page-faq .faq-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-facts__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-facts dt {
  color: var(--c-steel);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.page-faq .faq-facts dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 5px;
}

.page-faq .faq-facts .data-num {
  font-family: var(--ff-mono);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  color: var(--c-cyan);
  line-height: 1;
}

.page-faq .faq-facts__unit {
  font-size: 0.75rem;
  color: var(--c-steel);
  letter-spacing: 0.08em;
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-body {
  padding-bottom: 84px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

/* ---------- 左侧检索与分类 ---------- */
.page-faq .faq-rail {
  min-width: 0;
}

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

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--c-steel);
}

.page-faq .faq-search__input {
  display: block;
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  background: var(--c-mid);
  border: 1px solid var(--faq-line);
  border-radius: 0;
  color: var(--c-ice);
  font-family: var(--ff-body);
  font-size: 0.9375rem;
  line-height: 1.4;
  appearance: none;
  -webkit-appearance: none;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-search__input::placeholder {
  color: var(--c-steel);
  opacity: 0.85;
}

.page-faq .faq-search__input:hover {
  border-color: rgba(0, 229, 255, 0.3);
}

.page-faq .faq-search__input:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
  border-color: rgba(0, 229, 255, 0.55);
}

.page-faq .faq-search__hint {
  margin: 9px 0 0;
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--c-steel);
}

.page-faq .faq-cats ol {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-cats li {
  flex: 0 0 auto;
}

.page-faq .faq-cats a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 14px 9px 10px;
  border-left: 2px solid transparent;
  color: var(--c-steel);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-cats a:hover,
.page-faq .faq-cats a:focus-visible {
  color: var(--c-ice);
  border-left-color: var(--c-cyan);
  background: rgba(0, 229, 255, 0.06);
}

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

.page-faq .faq-cats__num {
  font-family: var(--ff-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: rgba(0, 229, 255, 0.7);
}

/* ---------- 右侧问答 ---------- */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 28px);
  padding-top: 18px;
  margin-bottom: 58px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-group:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-group__head {
  margin-bottom: 24px;
}

.page-faq .faq-group__head .ticks {
  display: block;
  font-family: var(--ff-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
  margin-bottom: 12px;
}

.page-faq .faq-group__head h2 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  line-height: 1.2;
}

.page-faq .faq-group__head p {
  margin: 0;
  max-width: 62ch;
  color: var(--c-steel);
  line-height: 1.8;
  font-size: 0.9375rem;
}

.page-faq .faq-figure {
  margin: 0 0 26px;
}

.page-faq .faq-figure .media {
  border: 1px solid var(--faq-line-soft);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--c-steel);
}

/* 折叠条目 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-item:first-child {
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-item[open] {
  background: rgba(0, 229, 255, 0.03);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  padding: 18px 14px 18px 4px;
  cursor: pointer;
  list-style: none;
  color: var(--c-ice);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.65;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

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

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

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

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

.page-faq .faq-q__num {
  font-family: var(--ff-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--c-steel);
  padding-top: 4px;
}

.page-faq .faq-q__mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  flex: none;
}

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

.page-faq .faq-q__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-q__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-q__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-a {
  padding: 0 14px 22px 34px;
  color: var(--c-steel);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.page-faq .faq-a p {
  margin: 0 0 12px;
}

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

.page-faq .faq-a strong {
  color: var(--c-ice);
  font-weight: 600;
}

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

.page-faq .faq-steps {
  list-style: none;
  margin: 14px 0 14px;
  padding: 0;
  display: grid;
  gap: 9px;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--ff-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}

/* ---------- 收尾提示 ---------- */
.page-faq .faq-cta {
  margin-top: 52px;
  padding: 30px 26px 32px;
  border-left: 2px solid var(--c-cyan);
}

.page-faq .faq-cta .ticks {
  display: block;
  font-family: var(--ff-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
  margin-bottom: 12px;
}

.page-faq .faq-cta h2 {
  margin: 0 0 12px;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  line-height: 1.35;
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 58ch;
  color: var(--c-steel);
  font-size: 0.9375rem;
  line-height: 1.8;
}

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

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 34px 0 78px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 48px;
  }

  .page-faq .faq-facts__row {
    padding: 18px 24px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

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

  .page-faq .faq-cats ol {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--faq-line-soft);
    margin-left: 1px;
  }

  .page-faq .faq-cats li {
    flex: 1 1 auto;
  }

  .page-faq .faq-cats a {
    padding: 11px 12px;
    border-left: 2px solid transparent;
    margin-left: -1px;
    white-space: normal;
  }

  .page-faq .faq-cats a:hover,
  .page-faq .faq-cats a:focus-visible {
    background: rgba(0, 229, 255, 0.05);
  }

  .page-faq .faq-group {
    padding-top: 22px;
    margin-bottom: 68px;
  }

  .page-faq .faq-a {
    padding: 0 30px 24px 34px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-cta {
    padding: 36px 34px 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q,
  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .faq-cats a,
  .page-faq .faq-search__input {
    transition: none;
  }
}