.page-faq {
  display: block;
  color: var(--paper);
}

.page-faq .ng-crumbs {
  margin: 22px 0 20px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-bottom: 52px;
  padding: 38px 22px 32px;
  isolation: isolate;
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(34, 224, 255, 0.18), transparent 56%),
    linear-gradient(135deg, var(--purple-a) 0%, var(--purple-b) 52%, var(--navy) 100%);
}

.page-faq .faq-hero__note {
  margin: 0 0 16px;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(46px, 12vw, 88px);
  line-height: 0.92;
  letter-spacing: -0.035em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.8;
  color: #D3DDEB;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
  margin: 0;
  padding: 22px 0 0;
  list-style: none;
  border-top: 1px solid rgba(34, 224, 255, 0.24);
}

.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__stat-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-faq .faq-hero__stat-label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ash);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 34px;
}

/* ---------- 分组索引 ---------- */
.page-faq .faq-index__head {
  margin: 0 0 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--ash);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0 11px 14px;
  border-left: 2px solid var(--steel);
  color: var(--ash);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease, background-color var(--t-fast) ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  border-color: var(--cyan);
  background: rgba(34, 224, 255, 0.07);
}

.page-faq .faq-index__no {
  flex: none;
  color: var(--cyan-deep);
  font-weight: 700;
  transition: color var(--t-fast) ease;
}

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

.page-faq .faq-index__foot {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--steel);
  font-size: 13px;
  line-height: 1.75;
  color: var(--ash);
}

.page-faq .faq-index__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 255, 0.4);
}

.page-faq .faq-index__foot a:hover,
.page-faq .faq-index__foot a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 68px;
}

.page-faq .faq-group::before {
  content: "";
  display: block;
  width: 56px;
  height: 3px;
  margin-bottom: 22px;
  background: var(--cyan);
}

.page-faq .faq-group--warm::before {
  background: var(--orange);
}

.page-faq .faq-group__head {
  display: grid;
  gap: 22px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--steel);
}

.page-faq .faq-group__no {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--cyan-deep);
  transition: color var(--t-mid) ease;
}

.page-faq [data-chapter].is-current .faq-group__no {
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(26px, 5vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-group__lede {
  margin: 14px 0 0;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ash);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--steel);
  background: linear-gradient(160deg, var(--navy), var(--void));
}

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

.page-faq .faq-figure--banner {
  margin: 28px 0 22px;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  margin-top: 8px;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--steel);
  transition: background-color var(--t-fast) ease;
}

.page-faq .faq-item[open] {
  background: linear-gradient(180deg, rgba(34, 224, 255, 0.06), rgba(34, 224, 255, 0));
}

.page-faq .faq-group--warm .faq-item[open] {
  background: linear-gradient(180deg, rgba(255, 77, 46, 0.07), rgba(255, 77, 46, 0));
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 19px 6px;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

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

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

.page-faq .faq-item__no {
  flex: none;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan-deep);
  transition: color var(--t-fast) ease;
}

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

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__icon {
  position: relative;
  flex: none;
  align-self: center;
  margin-left: auto;
  width: 16px;
  height: 16px;
}

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

.page-faq .faq-item__icon::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__icon::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

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

.page-faq .faq-group--warm .faq-item__icon::before,
.page-faq .faq-group--warm .faq-item__icon::after {
  background: var(--amber);
}

.page-faq .faq-item__a {
  max-width: 68ch;
  padding: 0 6px 24px;
  font-size: 16px;
  line-height: 1.85;
  color: #C9D6E6;
}

.page-faq .faq-item__a p {
  margin: 0;
}

/* ---------- 底部行动区 ---------- */
.page-faq .faq-cta {
  margin-top: 74px;
  padding: 32px 22px;
  background: linear-gradient(120deg, rgba(42, 20, 80, 0.92), rgba(11, 27, 51, 0.92));
}

.page-faq .faq-cta__title {
  margin: 0;
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-cta__text {
  margin: 14px 0 24px;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ash);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding: 52px 40px 40px;
  }

  .page-faq .faq-item__a {
    padding-left: 54px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 28px;
  }

  .page-faq .faq-group__head--split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    align-items: end;
    gap: 36px;
  }

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

  .page-faq .faq-cta {
    padding: 40px 40px 42px;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-hero {
    padding: 60px 56px 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-item,
  .page-faq .faq-index__link,
  .page-faq .faq-group__no {
    transition: none;
  }
}