.page-faq {
  --faq-rail-w: 236px;
  --faq-indent: 18px;
  background-color: var(--paper-50);
  color: var(--brown-900);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: clamp(16px, 3vw, 28px);
  padding-bottom: clamp(12px, 2vw, 20px);
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray-600);
}

.page-faq .breadcrumb a {
  color: var(--gray-600);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .breadcrumb a:hover {
  color: var(--gold-600);
  border-bottom-color: var(--gold-500);
}

.page-faq .breadcrumb a:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

.page-faq .breadcrumb__sep {
  color: var(--gold-500);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--ink-900);
  color: var(--paper-50);
  padding: clamp(40px, 7vw, 84px) 0 clamp(36px, 5vw, 68px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line-gold-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-gold-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 82% 0%, rgba(201, 162, 39, 0.18), transparent 62%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--track);
  color: var(--gold-300);
  text-transform: uppercase;
}

.page-faq .faq-title {
  margin: 0 0 20px;
  max-width: 22ch;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: clamp(1.9rem, 5.4vw, 3.4rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper-50);
}

.page-faq .faq-lede {
  margin: 0 0 clamp(28px, 4vw, 40px);
  max-width: 64ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: rgba(246, 241, 228, 0.84);
}

.page-faq .faq-stats {
  list-style: none;
  margin: 0 0 clamp(32px, 5vw, 52px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-gold);
  border-left: 1px solid var(--line-gold);
}

.page-faq .faq-stats__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 18px;
  border-right: 1px solid var(--line-gold);
  border-bottom: 1px solid var(--line-gold);
}

.page-faq .faq-stats__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 3.6vw, 2rem);
  line-height: 1;
  color: var(--gold-300);
}

.page-faq .faq-stats__label {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.5;
  color: rgba(246, 241, 228, 0.72);
}

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

.page-faq .faq-hero__figure .figure__frame {
  border: 1px solid var(--line-gold);
  overflow: hidden;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-hero__figure .figure__cap {
  margin-top: 12px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(246, 241, 228, 0.66);
}

/* ---------- 问答工作台 ---------- */
.page-faq .faq-desk {
  padding: clamp(40px, 6vw, 84px) 0 clamp(48px, 7vw, 96px);
}

.page-faq .faq-desk__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-rail {
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--track);
  color: var(--gold-600);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex: 0 0 auto;
  padding: 10px 14px;
  border: 1px solid var(--line);
  background-color: var(--paper-50);
  color: var(--brown-900);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--t-fast), border-color var(--t-fast), color var(--t-fast);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold-600);
  transition: color var(--t-fast);
}

.page-faq .faq-rail__link:hover {
  border-color: var(--gold-500);
  background-color: var(--gold-100);
}

.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

.page-faq .faq-rail__link[aria-current="true"] {
  border-color: var(--gold-500);
  background-color: var(--ink-900);
  color: var(--paper-50);
}

.page-faq .faq-rail__link[aria-current="true"] .faq-rail__num {
  color: var(--gold-300);
}

/* ---------- 分组 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group {
  padding-bottom: clamp(32px, 4vw, 56px);
  margin-bottom: clamp(32px, 4vw, 56px);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group--last {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-group__head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-group__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--track);
  color: var(--gold-600);
}

.page-faq .faq-group__title {
  margin: 0 0 10px;
  max-width: 24ch;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: clamp(1.35rem, 2.8vw, 1.9rem);
  line-height: 1.32;
  color: var(--brown-900);
}

.page-faq .faq-group__intro {
  margin: 0;
  max-width: 56ch;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.78;
  color: var(--gray-600);
}

.page-faq .faq-group__head::after {
  content: "";
  display: block;
  width: 64px;
  height: 2px;
  margin-top: 18px;
  background-color: var(--gold-500);
}

.page-faq .faq-group__figure {
  margin: 0 0 22px;
}

.page-faq .faq-group__figure .figure__frame {
  border: 1px solid var(--line);
  overflow: hidden;
  background-color: var(--paper-200);
}

.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-group__figure .figure__cap {
  margin-top: 10px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-600);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  min-width: 0;
}

.page-faq .qa {
  position: relative;
  padding-left: var(--faq-indent);
  border-bottom: 1px solid var(--line);
  background-color: transparent;
  transition: background-color var(--t-fast);
}

.page-faq .qa-list > .qa:first-child {
  border-top: 1px solid var(--line);
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background-color: var(--gold-500);
  opacity: 0;
  transition: opacity var(--t-fast);
}

.page-faq .qa[open]::before {
  opacity: 1;
}

.page-faq .qa[open] {
  background-color: var(--paper-200);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 14px 18px 0;
  cursor: pointer;
  list-style: none;
  transition: color var(--t-fast);
}

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

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

.page-faq .qa__q:hover .qa__text {
  color: var(--gold-600);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

.page-faq .qa__num {
  flex: 0 0 auto;
  min-width: 3.4em;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold-600);
}

.page-faq .qa__text {
  flex: 1 1 auto;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.62;
  color: var(--brown-900);
  transition: color var(--t-fast);
}

.page-faq .qa__sign {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 5px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background-color: var(--gold-600);
  transition: transform var(--t-fast), opacity var(--t-fast);
}

.page-faq .qa__sign::before {
  left: 0;
  right: 0;
  top: 8px;
  height: 1.5px;
}

.page-faq .qa__sign::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 1.5px;
}

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

.page-faq .qa__a {
  padding: 0 14px 22px 0;
  max-width: 68ch;
}

.page-faq .qa__a p {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.86;
  color: var(--gray-600);
}

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

.page-faq .qa-mark {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.94em;
  color: var(--brown-900);
  border-bottom: 1px solid var(--gold-500);
  padding-bottom: 1px;
}

.page-faq .qa-inline-link {
  color: var(--gold-600);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-500);
}

.page-faq .qa-inline-link:hover {
  color: var(--crimson-700);
  border-bottom-color: var(--crimson-700);
}

.page-faq .qa-inline-link:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

/* ---------- 收束三条路径 ---------- */
.page-faq .faq-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background-color: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-next__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 20px 26px;
  background-color: var(--paper-50);
  color: var(--brown-900);
  text-decoration: none;
  transition: background-color var(--t-fast), color var(--t-fast);
}

.page-faq .faq-next__item:hover {
  background-color: var(--ink-900);
  color: var(--paper-50);
}

.page-faq .faq-next__item:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

.page-faq .faq-next__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--track);
  color: var(--gold-600);
  transition: color var(--t-fast);
}

.page-faq .faq-next__item:hover .faq-next__num {
  color: var(--gold-300);
}

.page-faq .faq-next__title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.12rem;
  line-height: 1.4;
}

.page-faq .faq-next__desc {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray-600);
  transition: color var(--t-fast);
}

.page-faq .faq-next__item:hover .faq-next__desc {
  color: rgba(246, 241, 228, 0.78);
}

.page-faq .faq-next__go {
  margin-top: auto;
  padding-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold-600);
  transition: color var(--t-fast);
}

.page-faq .faq-next__item:hover .faq-next__go {
  color: var(--gold-300);
}

/* ---------- 显现 ---------- */
.page-faq [data-reveal].is-armed {
  opacity: 0;
  transform: translateY(6px);
}

.page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity 0.12s var(--ease), transform 0.12s var(--ease);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 960px) {
  .page-faq .faq-desk__grid {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 116px;
    border-bottom: 0;
    border-top: 2px solid var(--gold-500);
    padding-top: 18px;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__list {
    display: grid;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    border: 0;
    border-bottom: 1px solid var(--line-soft);
    border-left: 2px solid transparent;
    padding: 12px 10px 12px 14px;
    white-space: normal;
    background-color: transparent;
  }

  .page-faq .faq-rail__link:hover {
    background-color: var(--gold-100);
  }

  .page-faq .faq-rail__link[aria-current="true"] {
    background-color: transparent;
    color: var(--brown-900);
    border-left-color: var(--gold-500);
  }

  .page-faq .faq-rail__link[aria-current="true"] .faq-rail__num {
    color: var(--gold-600);
  }

  .page-faq .faq-rail__link[aria-current="true"] .faq-rail__name {
    font-weight: 700;
  }

  .page-faq .faq {
    padding-left: 26px;
  }

  .page-faq .qa__q {
    padding: 20px 18px 20px 0;
  }

  .page-faq .qa__a {
    padding: 0 18px 24px 0;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-group__figure {
    width: min(100%, 860px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa::before,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .faq-rail__link,
  .page-faq .faq-next__item,
  .page-faq [data-reveal].is-armed,
  .page-faq [data-reveal].is-visible {
    transition: none;
    transform: none;
  }
}