.page-faq {
  display: block;
  padding: 18px 0 88px;
}

.page-faq .crumbs {
  margin-bottom: 18px;
}

/* ============ 首屏框景 ============ */
.page-faq .faq-hero__frame {
  padding: 26px 20px 24px;
  background:
    radial-gradient(120% 140% at 100% 0%, var(--brand-b-tint), transparent 62%),
    var(--panel);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 24px;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(30px, 7.4vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text);
  max-width: 18ch;
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 46ch;
  color: var(--muted);
}

.page-faq .faq-hero__stats {
  display: grid;
  gap: 12px;
}

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line-faint);
}

.page-faq .faq-stat__n {
  font-size: 19px;
  font-weight: 600;
  color: var(--brand-a);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.page-faq .faq-stat__t {
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

/* ============ 高频问题 ============ */
.page-faq .faq-hot {
  margin-top: 48px;
}

.page-faq .faq-hot__head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.page-faq .faq-hot__grid {
  display: grid;
  gap: 24px;
}

.page-faq .faq-hot__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-faint);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-hot__item a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 6px 12px;
  padding: 15px 16px;
  background: var(--panel);
  text-decoration: none;
  color: inherit;
  transition: background 200ms var(--ease);
}

.page-faq .faq-hot__item a:hover,
.page-faq .faq-hot__item a:focus-visible {
  background: var(--panel-2);
}

.page-faq .faq-hot__q {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text);
  transition: color 200ms var(--ease);
}

.page-faq .faq-hot__item a:hover .faq-hot__q,
.page-faq .faq-hot__item a:focus-visible .faq-hot__q {
  color: var(--brand-a-hi);
}

.page-faq .faq-hot__go {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.45;
  color: var(--brand-a);
  justify-self: end;
}

.page-faq .faq-hot__a {
  grid-column: 1 / -1;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

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

.page-faq .faq-hot__media {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel-2);
}

.page-faq .faq-hot__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.06);
}

/* ============ 主体分栏 ============ */
.page-faq .faq-body {
  margin-top: 56px;
  display: grid;
  grid-template-areas: "nav" "main";
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-faq .faq-nav {
  grid-area: nav;
  min-width: 0;
}

.page-faq .faq-body__main {
  grid-area: main;
  min-width: 0;
}

.page-faq .faq-nav__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-nav__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-faq .faq-nav__link .mono {
  font-size: 11px;
  color: var(--brand-a);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  color: var(--brand-a-hi);
  border-color: var(--brand-a);
  background: var(--brand-a-tint);
}

/* ============ 分组与条目 ============ */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-group + .faq-group {
  margin-top: 46px;
}

.page-faq .faq-group__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding: 2px 0 12px 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 15px;
  width: 3px;
  background: var(--brand-a);
}

.page-faq .faq-group__no {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--brand-a);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 4.8vw, 28px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-group__note {
  flex: 1 1 100%;
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-group__note a {
  color: var(--brand-a);
  text-decoration: none;
  border-bottom: 1px solid var(--brand-a-tint);
}

.page-faq .faq-group__note a:hover,
.page-faq .faq-group__note a:focus-visible {
  color: var(--brand-a-hi);
  border-bottom-color: var(--brand-a-hi);
}

.page-faq .faq-group__items {
  margin-top: 2px;
}

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--line-faint);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--brand-a);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 220ms var(--ease);
}

.page-faq .faq-item[open]::before,
.page-faq .faq-item:target::before {
  transform: scaleY(1);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 15px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  transition: color 180ms var(--ease);
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible,
.page-faq .faq-item:target .faq-item__q {
  color: var(--brand-a-hi);
}

.page-faq .faq-item__idx {
  padding-left: 12px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 12px;
  height: 12px;
  justify-self: end;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--brand-a);
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__mark::before {
  width: 12px;
  height: 1.5px;
}

.page-faq .faq-item__mark::after {
  width: 1.5px;
  height: 12px;
  transition: transform 220ms var(--ease), opacity 220ms var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  padding: 0 0 18px 0;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 620px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ============ 分组配图 ============ */
.page-faq .faq-band {
  margin: 20px 0 8px;
}

.page-faq .faq-band__media {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel-2);
}

.page-faq .faq-band__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

/* ============ 出口区 ============ */
.page-faq .faq-out {
  margin-top: 64px;
}

.page-faq .faq-out__panel {
  position: relative;
  display: grid;
  gap: 26px;
  padding: 28px 22px 28px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(118deg, var(--brand-a-tint), transparent 48%),
    var(--panel);
}

.page-faq .faq-out__panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--brand-a);
}

.page-faq .faq-out h2 {
  margin: 12px 0 0;
  font-size: clamp(22px, 5.2vw, 30px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-out p {
  margin: 12px 0 0;
  max-width: 640px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-out__meta {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-out__lines {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-out__lines li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text);
  word-break: break-all;
}

.page-faq .faq-out__lines .mono {
  flex: none;
  color: var(--muted);
}

.page-faq .faq-out__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ============ 响应式 ============ */
@media (min-width: 620px) {
  .page-faq .faq-hero__frame {
    padding: 34px 32px 32px;
  }

  .page-faq .faq-item__a {
    padding-left: 44px;
  }

  .page-faq .faq-out__panel {
    padding: 34px 32px 34px 36px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 40px;
    align-items: end;
  }

  .page-faq .faq-hot__grid {
    grid-template-columns: minmax(0, 1fr) 250px;
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-out__panel {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
    gap: 40px;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-faq {
    padding-bottom: 110px;
  }

  .page-faq .faq-body {
    grid-template-areas: "main nav";
    grid-template-columns: minmax(0, 1fr) 196px;
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: calc(var(--header-h-scrolled) + 22px);
  }

  .page-faq .faq-nav__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-nav__link {
    white-space: normal;
    padding: 8px 0 8px 12px;
    border: 0;
    border-left: 1px solid var(--line-soft);
    border-radius: 0;
    line-height: 1.45;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}