.page-faq {
  --faq-ink-rule: rgba(13, 26, 40, .13);
  --faq-gap: 24px;
  display: block;
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  padding: 32px 0 48px;
  overflow: hidden;
  background:
    radial-gradient(120% 92% at 88% 6%, rgba(224, 118, 60, .17), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-soft) 100%);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 32px;
  align-items: end;
}

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: rgba(245, 241, 232, .52);
}

.page-faq .crumbs a {
  color: inherit;
  text-decoration: none;
}

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

.page-faq .faq-hero__title {
  margin: 18px 0 0;
  color: var(--white);
}

.page-faq .faq-hero__lead-text {
  max-width: 46ch;
  margin: 16px 0 0;
  color: rgba(245, 241, 232, .78);
}

.page-faq .faq-hero__meta {
  display: grid;
  gap: 16px;
}

.page-faq .faq-hero__meta .t-annot--v {
  display: none;
  color: rgba(245, 241, 232, .42);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  width: 100%;
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--ink-line);
}

.page-faq .faq-hero__stat dt {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: .06em;
  color: rgba(245, 241, 232, .5);
}

.page-faq .faq-hero__stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--volt);
}

.page-faq .faq-hero__stat dd small {
  margin-left: 3px;
  font-size: 11px;
  color: rgba(245, 241, 232, .72);
}

/* ============ 主体两栏 ============ */
.page-faq .faq-body {
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-body__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  min-width: 0;
  padding-top: 36px;
  padding-bottom: 76px;
}

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

/* ============ 主题索引 ============ */
.page-faq .faq-index {
  border-top: 2px solid var(--ink);
  padding-top: 14px;
  min-width: 0;
}

.page-faq .faq-index .toc__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--clay);
}

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

.page-faq .faq-index .toc__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index .toc__item {
  flex: 0 0 auto;
}

.page-faq .toc__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--faq-ink-rule);
  background: transparent;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-faq .toc__link:hover {
  background: var(--paper-soft);
}

.page-faq .toc__link[aria-current="true"] {
  background: var(--paper-soft);
  box-shadow: inset 3px 0 0 var(--volt);
}

.page-faq .toc__num {
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--clay);
}

/* ============ 分组与标题 ============ */
.page-faq .faq-group {
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: 56px;
}

.page-faq .faq-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-head__no {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--clay);
}

.page-faq .faq-head__title {
  margin: 0;
  font-size: clamp(21px, 4.2vw, 33px);
  line-height: 1.22;
  letter-spacing: .01em;
  color: var(--ink);
  transform: skewX(-2deg);
  transform-origin: left center;
}

.page-faq .faq-group__note {
  max-width: 60ch;
  margin: 16px 0 22px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--graphite);
}

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

/* ============ 折叠问答 ============ */
.page-faq .qa {
  border-top: 1px solid var(--faq-ink-rule);
}

.page-faq .qa:last-of-type {
  border-bottom: 1px solid var(--faq-ink-rule);
}

.page-faq .qa__q {
  position: relative;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 16px;
  gap: 12px;
  align-items: start;
  padding: 17px 4px 17px 12px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  line-height: 1.62;
  color: var(--ink);
  transition: background-color .18s var(--ease);
}

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

.page-faq .qa__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  background: var(--volt);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .22s var(--ease);
}

.page-faq .qa__q:hover {
  background: rgba(13, 26, 40, .035);
}

.page-faq .qa[open] .qa__q::before {
  transform: scaleY(1);
}

.page-faq .qa__num {
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--graphite);
}

.page-faq .qa[open] .qa__num {
  color: var(--clay);
}

.page-faq .qa__sign {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--clay);
  transition: transform .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .qa__sign::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .qa__sign::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

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

.page-faq .qa[open] .qa__sign::before {
  background: var(--ink);
}

.page-faq .qa__a {
  padding: 14px 16px 20px 18px;
  border-top: 1px solid var(--faq-ink-rule);
  background: var(--paper-soft);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .qa__a p {
  max-width: 62ch;
  margin: 0 0 10px;
}

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

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

/* ============ 流程节点图 ============ */
.page-faq .faq-flow {
  display: block;
  width: 100%;
  max-width: 620px;
  height: auto;
  margin: 22px 0 26px;
}

/* ============ 图片 ============ */
.page-faq .faq-figure {
  margin: 26px 0 0;
}

.page-faq .faq-figure .media__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--faq-ink-rule);
  background: var(--ink);
}

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

.page-faq .faq-figure .media__cap {
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--graphite);
}

/* ============ 示例表格 ============ */
.page-faq .table-wrap {
  margin-top: 24px;
  overflow-x: auto;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 13px;
  background: var(--paper-soft);
}

.page-faq .faq-table__cap {
  caption-side: top;
  padding: 0 0 10px;
  text-align: left;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--graphite);
}

.page-faq .faq-table thead th {
  padding: 10px 12px;
  background: var(--turf);
  color: var(--paper);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
  text-align: left;
}

.page-faq .faq-table tbody th {
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--faq-ink-rule);
}

.page-faq .faq-table td {
  padding: 10px 12px;
  color: var(--ink);
  border-bottom: 1px solid var(--faq-ink-rule);
  vertical-align: top;
}

.page-faq .faq-table td.num {
  font-family: var(--font-mono);
  white-space: nowrap;
}

.page-faq .faq-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-faq .faq-note .num {
  color: var(--clay);
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 48px 0 64px;
  }

  .page-faq .qa__q {
    grid-template-columns: 34px minmax(0, 1fr) 18px;
    gap: 14px;
    padding: 20px 6px 20px 14px;
    font-size: 17px;
  }

  .page-faq .qa__a {
    margin-left: 48px;
    padding: 18px 22px 24px;
    border-top: 0;
    border-left: 3px solid var(--faq-ink-rule);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 72px 0 92px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(240px, .55fr);
    gap: 72px;
  }

  .page-faq .faq-hero__meta {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }

  .page-faq .faq-hero__meta .t-annot--v {
    display: block;
  }

  .page-faq .faq-body__inner {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 64px;
    padding-top: 64px;
    padding-bottom: 120px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 88px;
    align-self: start;
  }

  .page-faq .faq-index .toc__list {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-index .toc__item {
    flex: none;
  }

  .page-faq .toc__link {
    flex-direction: row;
    align-items: baseline;
    padding: 11px 0;
    border: 0;
    border-bottom: 1px solid var(--faq-ink-rule);
    white-space: normal;
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 76px;
  }

  .page-faq .faq-figure--wide {
    max-width: 720px;
  }

  .page-faq .faq-head__title {
    transform: skewX(-3deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .toc__link,
  .page-faq .qa__q,
  .page-faq .qa__q::before,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after {
    transition: none;
  }
}