.page-faq {
  --faq-measure: 68ch;
  --faq-rule: rgba(168, 196, 218, 0.55);
  --faq-rule-strong: rgba(14, 42, 71, 0.16);
  --faq-tint: rgba(229, 225, 214, 0.62);
  background: var(--cream);
  color: var(--stone);
  padding-bottom: clamp(72px, 10vw, 140px);
}

.page-faq .faq-crumbs {
  padding-top: clamp(18px, 4vw, 30px);
}

.page-faq .faq-crumbs .breadcrumbs {
  font-size: 13px;
  letter-spacing: 0.04em;
}

/* ---------- 首屏声明 ---------- */

.page-faq .faq-intro {
  max-width: var(--faq-measure);
  padding: clamp(28px, 5vw, 48px) 0 clamp(30px, 5vw, 52px);
  border-bottom: 1px solid var(--faq-rule-strong);
}

.page-faq .faq-h1 {
  margin: 12px 0 0;
  font-size: clamp(1.9rem, 4.4vw, 3.1rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.page-faq .faq-lede {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: clamp(1rem, 1.5vw, 1.08rem);
  line-height: 1.85;
  color: var(--stone);
  overflow-wrap: break-word;
}

.page-faq .faq-filter {
  margin-top: clamp(26px, 4vw, 38px);
  max-width: 460px;
}

.page-faq .faq-filter-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--moss);
  margin-bottom: 10px;
}

.page-faq .faq-filter-input {
  display: block;
  width: 100%;
  padding: 9px 2px;
  border: 0;
  border-bottom: 1px solid var(--navy);
  border-radius: 0;
  background: transparent;
  color: var(--navy);
  font-family: var(--font-body);
  font-size: 1rem;
  appearance: none;
  transition: border-color 240ms var(--ease);
}

.page-faq .faq-filter-input::placeholder {
  color: rgba(51, 56, 61, 0.45);
}

.page-faq .faq-filter-input:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 4px;
  border-bottom-color: var(--clay);
}

/* ---------- 版式骨架 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 4vw, 32px);
  padding-top: clamp(34px, 5vw, 58px);
}

.page-faq .faq-rail {
  order: 1;
  border-bottom: 1px solid var(--faq-rule-strong);
  padding-bottom: 12px;
}

.page-faq .faq-rail-title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.page-faq .faq-rail-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 2px 16px;
}

.page-faq .faq-rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 5px 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--moss);
}

.page-faq .faq-rail-link:hover {
  color: var(--clay);
  border-bottom-color: var(--clay);
}

.page-faq .faq-rail-link.is-active {
  color: var(--clay);
  border-bottom-color: var(--clay);
}

.page-faq .faq-rail-link:focus-visible,
.page-faq .faq-next-list a:focus-visible,
.page-faq .faq-mail:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 3px;
}

.page-faq .faq-column {
  order: 2;
  min-width: 0;
}

/* ---------- 章节 ---------- */

.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-section + .faq-section {
  margin-top: clamp(46px, 7vw, 78px);
  padding-top: clamp(38px, 6vw, 60px);
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
}

.page-faq .faq-section-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--clay);
}

.page-faq .faq-section-title {
  margin: 0;
  font-size: clamp(1.22rem, 2.1vw, 1.6rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--navy);
}

.page-faq .faq-section-note {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 60ch;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--moss);
  overflow-wrap: break-word;
}

/* ---------- 图 ---------- */

.page-faq .faq-figure {
  margin: 0 0 clamp(24px, 4vw, 38px);
  border-radius: 0;
  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 2px 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--moss);
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-item {
  border-top: 1px solid var(--faq-rule);
  border-left: 2px solid transparent;
  padding-left: 14px;
  transition: border-left-color 240ms var(--ease);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-item[open] {
  border-left-color: var(--clay);
}

.page-faq .faq-q {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 20px 42px 20px 0;
  font-weight: 700;
  font-size: clamp(1.02rem, 1.5vw, 1.14rem);
  line-height: 1.55;
  color: var(--navy);
  transition: color 200ms var(--ease);
  overflow-wrap: break-word;
}

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

.page-faq .faq-q::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  width: 11px;
  height: 11px;
  margin-top: -7px;
  border-right: 1.5px solid var(--moss);
  border-bottom: 1.5px solid var(--moss);
  transform: rotate(45deg);
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.page-faq .faq-item[open] .faq-q::after {
  transform: rotate(-135deg);
  border-color: var(--clay);
}

.page-faq .faq-q:hover {
  color: var(--clay);
}

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

.page-faq .faq-a {
  padding: 0 0 26px;
  max-width: 64ch;
}

.page-faq .faq-a p {
  margin: 0 0 1em;
  font-size: 1rem;
  line-height: 1.82;
  color: var(--stone);
  overflow-wrap: break-word;
}

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

.page-faq .faq-data {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.94em;
  padding: 1px 6px;
  background: var(--shale);
  color: var(--navy);
  white-space: nowrap;
}

.page-faq .faq-note {
  margin: 16px 0 0;
  max-width: 58ch;
  padding: 12px 14px;
  background: var(--faq-tint);
  border-left: 1px solid var(--moss);
  font-size: 0.9rem !important;
  line-height: 1.72 !important;
  color: var(--moss);
}

.page-faq .faq-note-label {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--clay);
}

.page-faq .faq-mail {
  color: var(--clay);
  font-family: var(--font-mono);
  font-size: 0.95em;
  text-decoration: none;
  border-bottom: 1px solid rgba(169, 66, 31, 0.4);
  transition: border-color 200ms var(--ease);
}

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

.page-faq .faq-copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-faq .faq-copy-status {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--moss);
}

/* ---------- 页尾延伸 ---------- */

.page-faq .faq-next {
  margin-top: clamp(50px, 7vw, 82px);
  padding-top: clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--faq-rule-strong);
}

.page-faq .faq-next-title {
  margin: 0 0 10px;
  font-size: clamp(1.14rem, 1.8vw, 1.38rem);
  font-weight: 700;
  line-height: 1.35;
  color: var(--navy);
}

.page-faq .faq-next-text {
  margin: 0 0 22px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--moss);
}

.page-faq .faq-next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--faq-rule);
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-next-list li {
  background: var(--cream);
}

.page-faq .faq-next-list a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 2px;
  text-decoration: none;
  color: inherit;
  transition: padding-left 240ms var(--ease);
}

.page-faq .faq-next-list a:hover {
  padding-left: 10px;
}

.page-faq .faq-next-k {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  transition: color 200ms var(--ease);
}

.page-faq .faq-next-list a:hover .faq-next-k {
  color: var(--clay);
}

.page-faq .faq-next-v {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--stone);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-column {
    max-width: 68ch;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 68ch) minmax(0, 1fr);
    column-gap: clamp(36px, 4vw, 64px);
    row-gap: 0;
    align-items: start;
  }

  .page-faq .faq-rail {
    order: 2;
    grid-column: 2;
    grid-row: 1;
    max-width: 240px;
    border-bottom: 0;
    padding-bottom: 0;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-column {
    order: 1;
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-rail-nav ul {
    flex-direction: column;
    gap: 0;
  }

  .page-faq .faq-rail-link {
    display: flex;
    width: 100%;
    padding: 7px 0 7px 12px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    transition: color 200ms var(--ease), border-color 200ms var(--ease);
  }

  .page-faq .faq-rail-link:hover,
  .page-faq .faq-rail-link.is-active {
    border-left-color: var(--clay);
    border-bottom-color: transparent;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>