.page-faq {
  --faq-rule: rgba(138, 147, 142, 0.3);
  --faq-rule-soft: rgba(138, 147, 142, 0.18);
  --faq-muted: #4a5852;
  display: block;
  background: var(--ink);
  color: var(--paper);
}

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

/* ---------- 顶部 ---------- */
.page-faq .faq-top {
  background: var(--ink);
  border-bottom: 1px solid var(--moss-line);
  padding-bottom: 3.25rem;
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 1.5rem;
  padding-bottom: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-faq .breadcrumb a {
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

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

.page-faq .breadcrumb__sep {
  color: var(--moss-line);
}

.page-faq .faq-hero {
  padding-top: 2.75rem;
}

.page-faq .faq-hero__eyebrow {
  display: inline-block;
  margin: 0 0 1.25rem;
  padding-left: 0.875rem;
  border-left: 2px solid var(--amber);
  color: var(--stone);
}

.page-faq .faq-hero__title {
  margin: 0 0 1.5rem;
  font-size: clamp(2.125rem, 6.4vw, 4.5rem);
  line-height: 1.02;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 36em;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(242, 239, 230, 0.78);
}

/* ---------- 主体 ---------- */
.page-faq .faq-body {
  background: var(--paper);
  color: var(--ink);
  padding: 2.75rem 0 4rem;
}

.page-faq .faq-body__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

/* ---------- 左索引 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 1rem;
  color: var(--faq-muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--faq-rule);
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.625rem;
  margin-left: -1px;
  padding: 0.5rem 0 0.5rem 1rem;
  border-left: 2px solid transparent;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--moss);
  border-left-color: var(--clay);
  background: rgba(169, 96, 63, 0.08);
}

.page-faq .faq-index__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-faq .faq-index__foot {
  margin: 1.25rem 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--faq-muted);
}

.page-faq .faq-index__foot .link-more {
  color: var(--moss);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid var(--clay);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-group {
  padding-bottom: 2.75rem;
  margin-bottom: 2.75rem;
  border-bottom: 1px dashed var(--faq-rule);
}

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

.page-faq .faq-group__head {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 1.75rem;
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--clay);
}

.page-faq .faq-group__title {
  margin: 0;
  padding-left: 0.875rem;
  border-left: 3px solid var(--cyan);
  font-size: clamp(1.375rem, 3.4vw, 1.875rem);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__intro {
  margin: 0;
  max-width: 38em;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--faq-muted);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure-wrap {
  margin: 0 0 2rem;
}

.page-faq .faq-figure {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--moss);
  border: 1px solid var(--faq-rule-soft);
  border-radius: 2px;
  filter: grayscale(1) contrast(1.04);
}

.page-faq .faq-figure__caption {
  margin-top: 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--faq-muted);
}

/* ---------- 单条问答 ---------- */
.page-faq .qa {
  padding: 1.375rem 0;
  border-top: 1px dashed var(--faq-rule-soft);
}

.page-faq .faq-figure-wrap + .qa,
.page-faq .qa:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-faq .qa__q {
  display: flex;
  gap: 0.625rem;
  margin: 0 0 0.75rem;
  font-size: 1.0625rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--moss);
}

.page-faq .qa__q::before {
  content: "Q";
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--clay);
  padding-top: 0.2em;
}

.page-faq .qa__a {
  padding-left: 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--faq-muted);
}

.page-faq .qa__a p {
  margin: 0 0 0.75rem;
  max-width: 36em;
}

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

.page-faq .qa__a a {
  color: var(--moss);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid var(--clay);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .qa__a a:hover {
  color: var(--clay);
  border-bottom-color: var(--moss);
}

/* ---------- 折叠补充 ---------- */
.page-faq .qa-more {
  margin-top: 0.875rem;
  border-top: 1px dashed var(--faq-rule-soft);
  padding-top: 0.75rem;
}

.page-faq .qa-more__summary {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--moss);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-more__summary::before {
  content: "＋";
  display: inline-block;
  width: 1em;
  margin-right: 0.375rem;
  color: var(--clay);
}

.page-faq .qa-more[open] .qa-more__summary::before {
  content: "－";
}

.page-faq .qa-more p {
  margin: 0.75rem 0 0;
  max-width: 36em;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--faq-muted);
}

/* ---------- 桌面 ---------- */
@media (min-width: 56rem) {
  .page-faq .faq-top {
    padding-bottom: 4rem;
  }

  .page-faq .faq-hero {
    padding-top: 3.5rem;
  }

  .page-faq .faq-body {
    padding: 4rem 0 5.5rem;
  }

  .page-faq .faq-body__inner {
    grid-template-columns: 14.5rem minmax(0, 1fr);
    gap: 4.5rem;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6rem;
  }

  .page-faq .qa__a {
    padding-left: 2rem;
  }
}

@media (min-width: 76rem) {
  .page-faq .faq-body__inner {
    gap: 5.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .qa__a a,
  .page-faq .breadcrumb a {
    transition: none;
  }
}
<<<END>>>