.page-faq {
  --faq-hair: 1px solid var(--steel);
  background: var(--ink);
  color: var(--chalk);
  padding-bottom: 96px;
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding: 30px 0 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.page-faq .crumbs__link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

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

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

.page-faq .crumbs__sep {
  margin: 0 .55em;
  color: var(--steel);
}

.page-faq .crumbs__current {
  color: var(--chalk);
}

/* ---------- 页头声明 ---------- */
.page-faq .faq-masthead {
  position: relative;
  padding: 6px 0 40px;
  border-bottom: var(--edge);
}

.page-faq .faq-masthead__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-masthead__title {
  margin: 14px 0 20px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(38px, 9.5vw, 82px);
  line-height: 1.02;
  letter-spacing: -.012em;
  color: var(--chalk);
}

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

.page-faq .faq-masthead__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .faq-masthead__meta .mono {
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

/* ---------- 分类锚点条 ---------- */
.page-faq .faq-jump-wrap {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  padding: 12px 0 14px;
  background: linear-gradient(180deg, var(--ink) 74%, rgba(7, 17, 13, 0));
}

.page-faq .faq-jump {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex: 0 0 auto;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--steel);
  background: var(--turf);
  color: var(--mist);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease), transform var(--ease), background-color var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  color: var(--chalk);
  border-color: var(--cyan);
  background: var(--turf-deep);
  transform: translateY(-2px);
}

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

.page-faq .faq-jump__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-part {
  padding: 46px 0 10px;
  scroll-margin-top: calc(var(--header-h) + 78px);
}

.page-faq .faq-part + .faq-part {
  margin-top: 22px;
}

.page-faq .faq-part__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 14px;
  align-items: start;
  margin-bottom: 22px;
}

.page-faq .faq-part__index {
  grid-row: 1 / span 2;
  padding-top: .32em;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  font-variant-numeric: tabular-nums;
  color: var(--mist);
  transition: color var(--ease);
}

.page-faq .faq-part:hover .faq-part__index,
.page-faq .faq-part:focus-within .faq-part__index {
  color: var(--cyan);
}

.page-faq .faq-part__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(24px, 6vw, 34px);
  line-height: 1.16;
  letter-spacing: -.008em;
  color: var(--chalk);
}

.page-faq .faq-part__lede {
  grid-column: 2;
  margin: 8px 0 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  margin: 0;
  border-top: var(--faq-hair);
}

.page-faq .faq-item {
  border-bottom: var(--faq-hair);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 4px 14px;
  align-items: baseline;
  min-height: 44px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 17px;
  line-height: 1.42;
  color: var(--chalk);
  transition: color var(--ease);
}

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

.page-faq .faq-item__q::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--mist);
  transition: color var(--ease);
}

.page-faq .faq-item[open] > .faq-item__q::after {
  content: "－";
  color: var(--cyan);
}

.page-faq .faq-item__q:hover {
  color: var(--cyan);
}

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

.page-faq .faq-item[open] > .faq-item__q {
  color: var(--cyan);
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
  color: var(--mist);
  transition: color var(--ease);
}

.page-faq .faq-item[open] .faq-item__num {
  color: var(--cyan);
}

.page-faq .faq-item__a {
  padding: 0 2px 22px;
  display: grid;
  gap: 10px;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--chalk);
}

.page-faq .faq-item__a p + p {
  color: var(--mist);
}

.page-faq .faq-item__a .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
  padding: 0 .15em;
}

.page-faq .faq-more__link {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--ease), text-underline-offset var(--ease);
}

.page-faq .faq-more__link:hover,
.page-faq .faq-more__link:focus-visible {
  color: var(--chalk);
  text-underline-offset: 5px;
}

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

/* ---------- 插图 ---------- */
.page-faq .figure {
  margin: 0 0 28px;
  border: var(--edge);
  background: var(--turf-deep);
  box-shadow: var(--shadow-hard);
}

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

.page-faq .figure__caption {
  padding: 11px 14px;
  border-top: var(--faq-hair);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 末尾收口 ---------- */
.page-faq .faq-part--last {
  padding-bottom: 0;
}

.page-faq .faq-escalate {
  margin-top: 30px;
  padding: 22px 20px;
  border: var(--edge);
  background: var(--turf);
  box-shadow: var(--shadow-soft-edge);
  display: grid;
  gap: 16px;
  align-items: center;
}

.page-faq .faq-escalate__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--chalk);
}

.page-faq .faq-escalate .btn {
  justify-self: start;
  min-height: 44px;
}

/* ---------- 断点 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-part {
    padding-top: 58px;
  }

  .page-faq .faq-part__head {
    grid-template-columns: 68px 1fr;
    gap: 6px 20px;
  }

  .page-faq .faq-item__q {
    font-size: 19px;
    padding: 20px 4px;
  }

  .page-faq .faq-item__a {
    padding: 0 4px 26px;
    padding-left: 68px;
  }

  .page-faq .faq-item__a p {
    font-size: 16px;
  }

  .page-faq .faq-escalate {
    padding: 28px 30px;
    grid-template-columns: 1fr auto;
  }

  .page-faq .faq-escalate .btn {
    justify-self: end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-masthead__lede {
    font-size: 17px;
  }

  .page-faq .faq-jump__link {
    padding: 10px 16px;
  }

  .page-faq .faq-part__title {
    font-size: 36px;
  }
}

@media (min-width: 1440px) {
  .page-faq {
    padding-bottom: 132px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .faq-item__q,
  .page-faq .faq-more__link,
  .page-faq .crumbs__link,
  .page-faq .faq-part__index {
    transition: none;
  }

  .page-faq .faq-jump__link:hover,
  .page-faq .faq-jump__link:focus-visible {
    transform: none;
  }
}