.page-faq {
  display: block;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding: clamp(20px, 3.5vw, 44px) 0 clamp(28px, 4.5vw, 60px);
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(24px, 3vw, 40px);
  padding: clamp(20px, 3.6vw, 48px);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--c-glass), rgba(244, 241, 232, .015));
  overflow: hidden;
}

.page-faq .faq-hero__inner::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--c-steel) 0 1px, transparent 1px 26px);
  opacity: .38;
}

.page-faq .faq-hero__inner::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 74px;
  height: 74px;
  border-left: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(225deg, rgba(232, 106, 51, .16), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero__copy {
  display: grid;
  gap: 16px;
  align-content: center;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5vw, 2.9rem);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--c-paper);
}

.page-faq .faq-hero .lead {
  margin: 0;
  max-width: 46ch;
  color: rgba(244, 241, 232, .8);
}

/* ---------- 关键词查找 ---------- */
.page-faq .faq-search {
  margin-top: 4px;
  max-width: 520px;
}

.page-faq .faq-search__field {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 2px 14px;
  border: 1px solid var(--line);
  background: rgba(7, 16, 31, .6);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-search__field:focus-within {
  border-color: var(--c-fluo);
  background: rgba(7, 16, 31, .88);
}

.page-faq .faq-search__icon {
  flex: none;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .18em;
  color: var(--c-saffron);
}

.page-faq .faq-search__input {
  flex: 1;
  min-width: 0;
  padding: 13px 0;
  border: 0;
  background: transparent;
  color: var(--c-paper);
  font-family: var(--font-body);
  font-size: .98rem;
  outline: none;
}

.page-faq .faq-search__input::placeholder {
  color: rgba(143, 163, 184, .8);
}

.page-faq .faq-search__hint {
  margin: 9px 0 0;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--c-steel);
}

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

.page-faq .figure__frame {
  border: 1px solid var(--line-soft);
  background: var(--c-ink);
}

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

.page-faq .figure__caption {
  color: var(--c-steel);
}

/* ---------- 分组索引条 ---------- */
.page-faq .faq-jump {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 16, 31, .55);
}

.page-faq .faq-jump__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 0;
}

.page-faq .faq-jump__label {
  flex: none;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  color: var(--c-steel);
  text-transform: uppercase;
}

.page-faq .faq-jump__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 2px 0;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line-soft);
  color: var(--c-paper);
  font-size: .88rem;
  text-decoration: none;
  white-space: nowrap;
  scroll-snap-align: start;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--c-saffron);
  background: rgba(232, 106, 51, .12);
  color: var(--c-paper);
}

.page-faq .faq-jump__num {
  font-family: var(--font-mono);
  font-size: .68rem;
  color: var(--c-saffron);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding: clamp(34px, 5vw, 74px) 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-group:first-of-type {
  border-top: 0;
}

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

.page-faq .faq-group__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .2em;
  color: var(--c-saffron);
}

.page-faq .faq-group__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 4vw, 1.7rem);
  letter-spacing: .01em;
  line-height: 1.3;
  color: var(--c-paper);
}

.page-faq .faq-group__note {
  margin: 0;
  max-width: 34ch;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--c-steel);
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .fold-list {
  border-top: 1px solid var(--line-soft);
}

.page-faq .fold {
  border-bottom: 1px solid var(--line-soft);
  background: transparent;
}

.page-faq .fold__head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 17px 2px;
  list-style: none;
  cursor: pointer;
  color: var(--c-paper);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .fold__head:hover,
.page-faq .fold__head:focus-visible {
  color: var(--c-fluo);
}

.page-faq .fold__mark {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--c-steel);
  transition: color var(--dur) var(--ease);
}

.page-faq .fold[open] .fold__mark {
  color: var(--c-saffron);
}

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

.page-faq .fold__body {
  padding: 0 2px 20px 33px;
  color: rgba(244, 241, 232, .8);
  font-size: .95rem;
  line-height: 1.85;
}

.page-faq .fold__body p {
  margin: 0 0 10px;
}

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

.page-faq .fold__body a {
  color: var(--c-fluo);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(217, 242, 74, .45);
}

.page-faq .fold__body a:hover {
  text-decoration-color: var(--c-fluo);
}

/* ---------- 章节内配图 ---------- */
.page-faq .faq-figure {
  margin: 26px 0 0;
}

/* ---------- 后续入口 ---------- */
.page-faq .faq-next {
  padding: clamp(40px, 6vw, 86px) 0;
  background: var(--c-ink);
  border-top: 1px solid var(--line);
}

.page-faq .faq-next__title {
  margin: 0 0 26px;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 4vw, 1.8rem);
  letter-spacing: .01em;
  color: var(--c-paper);
}

.page-faq .faq-next__grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  border: 1px solid var(--line);
  background: var(--c-glass);
  color: var(--c-paper);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-card:hover,
.page-faq .faq-card:focus-visible {
  border-color: var(--c-saffron);
  background: rgba(232, 106, 51, .1);
}

.page-faq .faq-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.08rem;
  letter-spacing: .01em;
}

.page-faq .faq-card__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--c-steel);
}

.page-faq .faq-card__go {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--c-fluo);
}

.page-faq .faq-next__note {
  margin: 26px 0 0;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--c-steel);
}

.page-faq .faq-next__note a {
  color: var(--c-paper);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(143, 163, 184, .5);
}

.page-faq .faq-next__note a:hover {
  color: var(--c-fluo);
  text-decoration-color: rgba(217, 242, 74, .6);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: center;
  }

  .page-faq .faq-group__grid {
    grid-template-columns: minmax(0, 236px) minmax(0, 1fr);
    gap: clamp(30px, 5vw, 74px);
  }

  .page-faq .faq-group__head {
    position: sticky;
    top: 118px;
    align-self: start;
  }

  .page-faq .fold__head {
    padding: 20px 2px;
  }

  .page-faq .faq-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-group__grid {
    grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
  }
}