.page-faq {
  --faq-sticky: calc(var(--header-h-sm) + 28px);
  --faq-side: minmax(0, 3fr);
  --faq-body: minmax(0, 9fr);
  --faq-gap: clamp(20px, 3.4vw, 56px);
  background: var(--paper);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding-top: clamp(16px, 3vw, 28px);
  padding-bottom: 6px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.6vw, 60px) 0 clamp(30px, 5vw, 58px);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-light) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .75;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -42%;
  width: clamp(240px, 46%, 640px);
  height: clamp(170px, 52%, 360px);
  background: var(--apricot);
  opacity: .12;
  transform: skewX(-7deg);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  align-items: end;
}

.page-faq .faq-hero-copy .t-index {
  margin: 0;
  color: var(--moss);
}

.page-faq .faq-hero-title {
  margin: 14px 0 0;
  max-width: 19ch;
  color: var(--ink);
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero-copy .t-lede {
  margin: 20px 0 0;
  max-width: 54ch;
  color: var(--rock);
}

.page-faq .faq-hero-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-hero-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 14px 16px;
  background: var(--paper);
}

.page-faq .faq-hero-stat .num {
  font-family: var(--font-num);
  font-size: clamp(30px, 8vw, 44px);
  font-weight: 700;
  line-height: .98;
  color: var(--ink);
}

.page-faq .faq-hero-stat:nth-child(2) .num {
  color: var(--apricot-deep);
}

.page-faq .faq-stat-label {
  font-size: 12px;
  letter-spacing: .1em;
  line-height: 1.5;
  color: var(--rock);
}

/* ---------- 分组索引条 ---------- */
.page-faq .faq-toc {
  background: var(--warm);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-toc-list {
  list-style: none;
  margin: 0;
  padding: 10px 0;
  display: flex;
  gap: clamp(10px, 2vw, 26px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-toc-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 2px 8px;
  border-bottom: 2px solid transparent;
  color: var(--rock);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease, border-color .2s ease;
}

.page-faq .faq-toc-index {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--line);
}

.page-faq .faq-toc-link:hover {
  color: var(--ink);
  border-bottom-color: var(--line);
}

.page-faq .faq-toc-link:hover .faq-toc-index {
  color: var(--moss);
}

.page-faq .faq-toc-link:focus-visible {
  outline: 2px solid var(--apricot);
  outline-offset: 3px;
}

.page-faq .faq-toc-link[aria-current="true"] {
  color: var(--ink);
  border-bottom-color: var(--apricot);
}

.page-faq .faq-toc-link[aria-current="true"] .faq-toc-index {
  color: var(--apricot-deep);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-groups {
  padding-bottom: clamp(28px, 4vw, 56px);
}

.page-faq .faq-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: clamp(30px, 4.6vw, 60px) 0;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h-sm) + 40px);
}

.page-faq .faq-group-index {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(42px, 11vw, 68px);
  font-weight: 700;
  line-height: .86;
  letter-spacing: .01em;
  color: var(--line);
}

.page-faq .faq-group-title {
  margin: 12px 0 0;
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: .01em;
  color: var(--ink);
  transition: color .24s ease;
}

.page-faq .faq-group-note {
  margin: 12px 0 0;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .12em;
  line-height: 1.8;
  color: var(--rock);
}

.page-faq .faq-group:target .faq-group-title,
.page-faq .faq-group:target .faq-group-index {
  color: var(--apricot-deep);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(14px, 2.2vw, 24px);
  border: 1px solid var(--line-soft);
  background: var(--warm);
  overflow: hidden;
}

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

.page-faq .faq-figure .media-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.7;
  color: var(--rock);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border-top: 1px solid var(--line-soft);
  transition: background-color .2s ease, box-shadow .2s ease;
}

.page-faq .qa:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .qa[open] {
  background: var(--warm);
  box-shadow: inset 3px 0 0 var(--apricot);
}

.page-faq .qa > summary {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding: 15px 14px;
  list-style: none;
  cursor: pointer;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}

.page-faq .qa > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa > summary::marker {
  content: "";
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--apricot);
  outline-offset: -2px;
}

.page-faq .qa-mark {
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-right: 2px solid var(--moss);
  border-bottom: 2px solid var(--moss);
  transform: rotate(45deg);
  transition: transform .22s ease, border-color .22s ease;
}

.page-faq .qa[open] .qa-mark {
  transform: rotate(-135deg);
  border-color: var(--apricot);
}

.page-faq .qa-a {
  padding: 0 16px 20px 37px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--rock);
}

.page-faq .qa-a p {
  margin: 0;
}

.page-faq .qa[open] .qa-a {
  animation: faq-open-in .18s ease-out both;
}

@keyframes faq-open-in {
  from { opacity: 0; transform: translateY(-3px); }
  to { opacity: 1; transform: none; }
}

.page-faq .qa-link {
  color: var(--ink);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid var(--apricot);
  transition: color .2s ease, border-color .2s ease;
}

.page-faq .qa-link::after {
  content: " →";
  font-size: .92em;
  color: var(--apricot-deep);
}

.page-faq .qa-link:hover {
  color: var(--apricot-deep);
  border-bottom-color: var(--apricot-deep);
}

.page-faq .qa-link:focus-visible {
  outline: 2px solid var(--apricot);
  outline-offset: 2px;
}

/* ---------- 订阅组件外壳 ---------- */
.page-faq .faq-subscribe-wrap {
  padding: clamp(26px, 4.4vw, 58px) 0 clamp(34px, 5vw, 66px);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero-stat .num {
    font-size: clamp(32px, 3.6vw, 44px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 5fr);
  }

  .page-faq .faq-hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-group {
    grid-template-columns: var(--faq-side) var(--faq-body);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-group-side {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .qa > summary {
    padding: 18px 18px 18px 14px;
  }

  .page-faq .qa-a {
    padding: 0 34px 22px 37px;
  }
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-mark,
  .page-faq .qa-link,
  .page-faq .faq-toc-link,
  .page-faq .faq-group-title {
    transition: none;
  }

  .page-faq .qa[open] .qa-a {
    animation: none;
  }
}