.page-faq .faq-hero {
  background:
    linear-gradient(180deg, var(--c-sea) 0%, var(--c-mist) 100%);
  padding: 40px 0 44px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero__intro h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 34px;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--c-deep);
  margin: 14px 0 0;
}

.page-faq .faq-hero__intro .lede {
  margin-top: 16px;
  max-width: 42em;
  color: var(--c-ink);
}

.page-faq .faq-index {
  display: grid;
  gap: 8px;
  margin-top: 26px;
}

.page-faq .faq-index__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--c-mist);
  border: 1px solid var(--line);
  border-left: 3px solid var(--c-coral);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  color: var(--c-deep);
  text-decoration: none;
  font-size: 15px;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  background: var(--c-celadon-pale);
  border-left-color: var(--c-celadon);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-coral-deep);
}

.page-faq .faq-index__text {
  font-weight: 500;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--c-mist);
  box-shadow: var(--shadow);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-hero__caption {
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--c-ink);
  opacity: 0.72;
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-body {
  padding-top: 36px;
}

.page-faq .faq-shell {
  display: grid;
  gap: 24px;
}

/* 场景轨道 */
.page-faq .faq-rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  -webkit-overflow-scrolling: touch;
}

.page-faq .rail-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 10px 20px 10px 14px;
  background: var(--c-mist);
  border: 1px solid var(--line);
  border-left: 3px solid var(--c-deep);
  border-radius: var(--r);
  color: var(--c-deep);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq .rail-tab--warm {
  background: var(--c-warm);
  border-left-color: var(--c-coral);
}

.page-faq .rail-tab--lib {
  border-left-color: #4A5BFF;
}

.page-faq .rail-tab--plain {
  border-left-color: var(--c-coral-deep);
}

.page-faq .rail-tab:hover,
.page-faq .rail-tab:focus-visible {
  background: var(--c-deep);
  color: var(--c-mist);
  border-left-color: var(--c-coral);
}

.page-faq .rail-tab__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  opacity: 0.7;
}

.page-faq .rail-tab__text {
  font-weight: 700;
}

/* 场景区块 */
.page-faq .faq-answers {
  display: grid;
  gap: 22px;
  min-width: 0;
}

.page-faq .scene {
  background: var(--c-mist);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  padding: 20px 16px 18px;
  scroll-margin-top: 84px;
}

.page-faq .scene--new {
  border-top: 3px solid var(--c-celadon);
}

.page-faq .scene--old {
  background: var(--c-warm);
  border-top: 3px solid var(--c-coral);
}

.page-faq .scene--old .faq-item {
  background: var(--c-mist);
}

.page-faq .scene--lib {
  border-top: 3px solid #6A5BFF;
}

.page-faq .scene--help {
  border-top: 3px solid var(--c-coral-deep);
}

.page-faq .scene__head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding-bottom: 14px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .scene__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-coral-deep);
  padding-top: 4px;
}

.page-faq .scene__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  line-height: 1.3;
  color: var(--c-deep);
  margin: 0;
}

.page-faq .scene__note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-ink);
  opacity: 0.82;
}

/* 折叠问答 */
.page-faq .faq-list {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.page-faq .faq-item {
  background: var(--c-sea);
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-item[open] {
  border-color: rgba(46, 139, 111, 0.45);
  background: var(--c-mist);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--c-deep);
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.3;
  color: var(--c-celadon);
  flex: 0 0 auto;
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
  color: var(--c-coral-deep);
}

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

.page-faq .faq-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--c-celadon);
}

.page-faq .faq-item[open] .faq-dot {
  background: var(--c-coral);
}

.page-faq .faq-a {
  padding: 0 16px 16px 34px;
  animation: faq-drop 0.2s ease both;
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-ink);
}

.page-faq .num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-coral-deep);
}

.page-faq .faq-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-coral-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(194, 65, 12, 0.35);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--c-deep);
  background: var(--c-celadon-pale);
  border-bottom-color: var(--c-celadon);
}

/* 资料库示意图 */
.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--c-mist);
  box-shadow: var(--shadow);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-faq .faq-figure .media__caption {
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--c-ink);
  opacity: 0.72;
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
}

/* 提示条 */
.page-faq .faq-note {
  background: var(--c-coral-sand);
  border: 1px solid rgba(194, 65, 12, 0.22);
  border-left: 3px solid var(--c-coral);
  border-radius: var(--r);
  padding: 16px 18px;
}

.page-faq .faq-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-coral-deep);
}

.page-faq .faq-note strong {
  color: var(--c-deep);
  font-weight: 700;
}

/* 联系区块 */
.page-faq .faq-help {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.page-faq .faq-help__item {
  padding: 14px 16px;
  background: var(--c-sea);
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-help__item:hover {
  background: var(--c-celadon-pale);
  border-color: rgba(46, 139, 111, 0.4);
}

.page-faq .faq-help__item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-deep);
}

.page-faq .faq-help__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-ink);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-faq .faq-help__actions .btn {
  flex: 1 1 auto;
  text-align: center;
}

@keyframes faq-drop {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 56px 0 60px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.6fr);
    align-items: end;
    gap: 36px;
  }

  .page-faq .faq-hero__intro h1 {
    font-size: 44px;
  }

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

  .page-faq .faq-index__item {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding: 14px;
  }

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

  .page-faq .scene {
    padding: 26px 26px 24px;
  }

  .page-faq .scene__title {
    font-size: 24px;
  }

  .page-faq .faq-item > summary {
    padding: 16px 20px;
    font-size: 16px;
  }

  .page-faq .faq-a {
    padding: 0 20px 18px 38px;
  }

  .page-faq .faq-help__actions .btn {
    flex: 0 0 auto;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-shell {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-rail {
    flex-direction: column;
    overflow: visible;
    position: sticky;
    top: 88px;
    gap: 10px;
  }

  .page-faq .rail-tab {
    width: 100%;
    white-space: normal;
    padding: 14px 24px 14px 16px;
  }

  .page-faq .scene {
    padding: 30px 34px 28px;
  }

  .page-faq .scene__title {
    font-size: 26px;
  }

  .page-faq .faq-hero__intro h1 {
    font-size: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-a {
    animation-duration: 0.01ms;
  }

  .page-faq .faq-index__item,
  .page-faq .rail-tab,
  .page-faq .faq-item,
  .page-faq .faq-link,
  .page-faq .faq-help__item {
    transition-duration: 0.01ms;
  }
}
<<<END>>>