.page-faq {
  background: var(--deep);
  color: var(--cold);
  overflow-x: clip;
  padding-bottom: 72px;
}

/* ---------- 封面 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 40px) 0 36px;
  background:
    radial-gradient(120% 78% at 88% -6%, rgba(185, 255, 60, 0.16), transparent 58%),
    linear-gradient(155deg, #0B3B3C 0%, #06292A 62%, #135152 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero__text {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: 4px;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-size: clamp(2.25rem, 6.4vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: -0.015em;
  color: var(--cold);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 54ch;
  color: var(--steel);
  font-size: var(--fs-17);
  line-height: 1.8;
}

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

.page-faq .faq-hero__figure .figure__media {
  aspect-ratio: 7 / 4;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--deep-shadow);
}

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

.page-faq .faq-hero__figure .figure__caption {
  margin-top: 10px;
  color: var(--steel);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  line-height: 1.7;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding-top: 34px;
}

.page-faq .faq-layout {
  display: grid;
  gap: 22px;
}

.page-faq .faq-layout__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ---------- 主题筛选 ---------- */
.page-faq .faq-filter {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(6, 41, 42, 0.62);
  scrollbar-width: thin;
}

.page-faq .faq-filter::-webkit-scrollbar {
  height: 4px;
}

.page-faq .faq-filter::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 4px;
}

.page-faq .faq-filter .filter-chip {
  flex: 0 0 auto;
  padding: 9px 16px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--steel);
  font-family: var(--font-body);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-faq .faq-filter .filter-chip:hover {
  color: var(--fluo-cream);
  background: rgba(19, 81, 82, 0.75);
}

.page-faq .faq-filter .filter-chip[aria-pressed="true"] {
  background: var(--fluo);
  color: var(--rubber);
}

.page-faq .faq-filter .filter-chip:focus-visible {
  outline: 2px solid var(--fluo);
  outline-offset: 2px;
}

.page-faq .faq-tally {
  margin: 0;
  padding-left: 6px;
  color: var(--steel);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
}

.page-faq .faq-tally span {
  color: var(--fluo);
  font-size: var(--fs-14);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

/* ---------- 竖向索引条 ---------- */
.page-faq .faq-index {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--steel);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s ease, background 0.18s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--fluo);
  background: rgba(19, 81, 82, 0.7);
}

.page-faq .faq-index__num {
  font-family: var(--font-body);
  font-variant-numeric: tabular-nums;
  color: var(--bronze);
}

/* ---------- 分组 ---------- */
.page-faq .faq-layout__list {
  display: flex;
  flex-direction: column;
  gap: 46px;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 16px;
  margin-bottom: 14px;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-group__num {
  font-family: var(--font-body);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--fluo);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-cover);
  font-size: var(--fs-22);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--cold);
}

.page-faq .faq-group__intro {
  margin: 0 0 18px;
  max-width: 62ch;
  color: var(--steel);
  font-size: var(--fs-14);
  line-height: 1.75;
}

.page-faq .faq-group__intro a {
  color: var(--fluo-cream);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-group__intro a:hover {
  color: var(--fluo);
}

/* ---------- 折叠问答 ---------- */
.page-faq .panel-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .panel {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(19, 81, 82, 0.42);
  overflow: hidden;
  transition: background 0.18s ease, border-color 0.18s ease;
}

.page-faq .panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--line-strong);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .panel:hover {
  background: rgba(19, 81, 82, 0.62);
  border-color: var(--line-strong);
}

.page-faq .panel.is-open::before,
.page-faq .panel[data-open="true"]::before,
.page-faq .panel:has(.panel__trigger[aria-expanded="true"])::before {
  background: var(--fluo);
  box-shadow: 0 0 14px rgba(185, 255, 60, 0.55);
}

.page-faq .panel__trigger {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  padding: 18px 20px 16px 22px;
  border: 0;
  background: transparent;
  color: var(--cold);
  font-family: var(--font-body);
  font-size: var(--fs-17);
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: color 0.18s ease;
}

.page-faq .panel__trigger:hover {
  color: var(--fluo-cream);
}

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

.page-faq .panel__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
}

.page-faq .panel__mark::before,
.page-faq .panel__mark::after {
  content: "";
  position: absolute;
  background: var(--fluo);
  border-radius: 2px;
}

.page-faq .panel__mark::before {
  left: 0;
  top: 50%;
  width: 16px;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .panel__mark::after {
  left: 50%;
  top: 0;
  width: 2px;
  height: 16px;
  transform: translateX(-50%);
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.page-faq .panel.is-open .panel__mark::after,
.page-faq .panel[data-open="true"] .panel__mark::after,
.page-faq .panel:has(.panel__trigger[aria-expanded="true"]) .panel__mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .panel__content {
  padding: 0 22px 20px 52px;
  background: var(--rubber);
  color: var(--steel);
  font-size: var(--fs-17);
  line-height: 1.8;
}

.page-faq .panel__content p {
  margin: 14px 0 0;
  max-width: 64ch;
}

.page-faq .faq-num {
  font-family: var(--font-body);
  font-variant-numeric: tabular-nums;
  color: var(--fluo);
  font-weight: 700;
}

/* ---------- 分组配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 18px;
}

.page-faq .faq-figure .figure__media {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--deep-shadow);
}

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

.page-faq .faq-figure .figure__caption {
  margin-top: 10px;
  color: var(--steel);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
}

/* ---------- 尾部转化 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin-top: 8px;
  padding: 26px 24px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(19, 81, 82, 0.9), rgba(11, 59, 60, 0.96));
}

.page-faq .faq-cta__text {
  flex: 1 1 320px;
  min-width: 0;
}

.page-faq .faq-cta__title {
  margin: 6px 0 8px;
  font-family: var(--font-cover);
  font-size: var(--fs-22);
  font-weight: 600;
  line-height: 1.35;
  color: var(--cold);
}

.page-faq .faq-cta__desc {
  margin: 0;
  max-width: 52ch;
  color: var(--steel);
  font-size: var(--fs-14);
  line-height: 1.75;
}

.page-faq .faq-cta .btn {
  flex: 0 0 auto;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 62px) 0 54px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 420px);
    align-items: end;
    gap: 48px;
  }

  .page-faq .faq-hero__figure .figure__media {
    aspect-ratio: 16 / 10;
  }

  .page-faq .faq-body {
    padding-top: 48px;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 208px;
    grid-template-areas:
      "head index"
      "list index";
    column-gap: 44px;
    row-gap: 30px;
  }

  .page-faq .faq-layout__head {
    grid-area: head;
  }

  .page-faq .faq-layout__list {
    grid-area: list;
  }

  .page-faq .faq-layout__index {
    grid-area: index;
    position: sticky;
    top: calc(var(--header-h) + 20px);
    align-self: start;
  }

  .page-faq .faq-index {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 14px 0 0;
    border-top: 1px solid var(--line-strong);
    border-bottom: 0;
  }

  .page-faq .faq-index__link {
    display: flex;
    width: 100%;
    padding: 9px 0 9px 12px;
    border-radius: 0;
    border-left: 2px solid transparent;
    white-space: normal;
    line-height: 1.5;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--fluo);
    background: transparent;
  }

  .page-faq .faq-filter {
    justify-content: flex-start;
  }

  .page-faq .panel__content {
    padding-left: 52px;
    padding-right: 34px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 228px;
    column-gap: 56px;
  }

  .page-faq .faq-layout__list {
    gap: 54px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .panel,
  .page-faq .panel::before,
  .page-faq .panel__mark::after,
  .page-faq .filter-chip,
  .page-faq .faq-index__link {
    transition: none !important;
  }
}