.page-faq {
  --faq-rail-w: 88px;
  --faq-sect-gap: clamp(36px, 5vw, 64px);
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 3.6vw, 42px) 0 clamp(30px, 4.5vw, 56px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-mid);
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  max-width: 24ch;
  font-size: clamp(29px, 5vw, 50px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.015em;
}

.page-faq .faq-hero__lede {
  margin: 0 0 10px;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .faq-hero__lede--sub {
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 编号年份段区间刻度 ---------- */
.page-faq .faq-scale {
  margin-top: clamp(26px, 3.6vw, 42px);
  border: 1px solid var(--line);
  background: var(--paper-2);
}

.page-faq .faq-scale__cap {
  margin: 0;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.page-faq .faq-scale__ticks {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-scale__tick {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 26px;
  background: var(--paper-2);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-scale__tick + .faq-scale__tick {
  border-top: 1px solid var(--line);
}

.page-faq .faq-scale__tick::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 9px;
  height: 8px;
  opacity: 0.55;
  background-image: repeating-linear-gradient(to right, var(--line-strong) 0 1px, transparent 1px 8px);
}

.page-faq .faq-scale__year {
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.page-faq .faq-scale__note {
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-soft);
}

.page-faq .faq-scale__ver {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  opacity: 0.72;
  transition: opacity var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-scale__tick:hover {
  background: var(--paper);
}

.page-faq .faq-scale__tick:hover .faq-scale__ver {
  opacity: 1;
  color: var(--blue-mid);
}

.page-faq .faq-scale__tick--current {
  background: var(--blue);
}

.page-faq .faq-scale__tick--current .faq-scale__year {
  color: var(--paper);
}

.page-faq .faq-scale__tick--current .faq-scale__note,
.page-faq .faq-scale__tick--current .faq-scale__ver {
  color: var(--blue-soft);
}

.page-faq .faq-scale__tick--current .faq-scale__ver {
  opacity: 0.92;
}

.page-faq .faq-scale__tick--current::after {
  opacity: 0.32;
}

.page-faq .faq-scale__tick--current:hover {
  background: var(--blue-mid);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding: clamp(32px, 5vw, 64px) 0 clamp(48px, 7vw, 92px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
}

.page-faq .faq-flow {
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-faq .faq-sect {
  margin-top: var(--faq-sect-gap);
  padding-top: clamp(20px, 2.6vw, 30px);
  border-top: 1px solid var(--line);
  scroll-margin-top: 110px;
}

.page-faq .faq-sect:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-sect__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: clamp(16px, 2vw, 24px);
}

.page-faq .faq-sect__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 26px;
  padding: 0 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--blue);
  background: var(--paper-2);
  border: 1px solid var(--line);
}

.page-faq .faq-sect__title {
  margin: 0;
  font-size: clamp(21px, 2.6vw, 28px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.012em;
}

/* ---------- 正文 ---------- */
.page-faq .faq-prose {
  max-width: 68ch;
}

.page-faq .faq-prose--tight {
  margin-bottom: 18px;
}

.page-faq .faq-prose p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink);
}

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

/* ---------- 图文分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 36px);
}

.page-faq .faq-figure {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--line);
  background: var(--paper-2);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--blue-soft);
}

.page-faq .faq-figure__cap {
  display: block;
  padding: 9px 2px 2px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

/* ---------- 章节目录 ---------- */
.page-faq .faq-toc-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 36px);
}

.page-faq .faq-toc {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-toc__item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-toc__link {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 15px 8px 16px;
  color: inherit;
  text-decoration: none;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-toc__link:hover {
  background: var(--paper-2);
}

.page-faq .faq-toc__link:focus-visible {
  outline: 2px solid var(--blue-mid);
  outline-offset: -2px;
}

.page-faq .faq-toc__num {
  grid-row: 1 / span 3;
  padding-top: 3px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--blue-mid);
}

.page-faq .faq-toc__name {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
}

.page-faq .faq-toc__desc {
  font-size: 14px;
  line-height: 1.68;
  color: var(--ink-soft);
}

.page-faq .faq-toc__go {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--blue-mid);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-toc__link:hover .faq-toc__go {
  color: var(--blue);
}

/* ---------- 场景路径 ---------- */
.page-faq .faq-paths {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-faq .faq-path {
  border-top: 1px solid var(--line);
  padding: 18px 0 24px;
}

.page-faq .faq-path__key {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.page-faq .faq-path__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.008em;
}

.page-faq .faq-path__desc {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-faq .faq-path__go {
  display: inline-block;
  padding-bottom: 2px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--blue-mid);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-path__go:hover {
  color: var(--blue);
  border-bottom-color: var(--blue);
}

.page-faq .faq-path__go:focus-visible {
  outline: 2px solid var(--blue-mid);
  outline-offset: 2px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-panels {
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-panels > .panel + .panel {
  border-top: 1px solid var(--line);
}

.page-faq .faq-panels > .panel {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-panels .panel__body p {
  margin: 0 0 10px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

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

/* ---------- 术语对照 ---------- */
.page-faq .faq-glossary {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-glossary dt {
  margin: 0;
  padding: 13px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--blue);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-glossary dd {
  margin: 0;
  padding: 13px 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

/* ---------- 旧版编号收束 ---------- */
.page-faq .faq-sect .exhibit-label {
  margin-top: 22px;
}

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

/* ---------- 右侧章节索引 ---------- */
.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-rail__label {
  margin: 0 0 12px;
  padding-left: 14px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

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

.page-faq .faq-rail__item a {
  display: block;
  margin-left: -1px;
  padding: 8px 0 8px 13px;
  border-left: 2px solid transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.09em;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-rail__item a:hover,
.page-faq .faq-rail__item a[data-active] {
  color: var(--blue);
  border-left-color: var(--blue);
}

.page-faq .faq-rail__item a:focus-visible {
  outline: 2px solid var(--blue-mid);
  outline-offset: -2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 44px);
  }

  .page-faq .faq-path {
    padding-right: 12px;
  }

  .page-faq .faq-path:nth-child(2n) {
    margin-top: 42px;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-scale__ticks {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-scale__tick + .faq-scale__tick {
    border-top: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-glossary {
    grid-template-columns: minmax(150px, 220px) minmax(0, 1fr);
  }
}

@media (min-width: 820px) {
  .page-faq .faq-toc__link {
    grid-template-columns: 56px minmax(0, 200px) minmax(0, 1fr) auto;
    gap: 0 20px;
    align-items: baseline;
    padding: 18px 10px;
  }

  .page-faq .faq-toc__num {
    grid-row: auto;
    padding-top: 0;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }

  .page-faq .faq-toc-wrap {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail-w);
  }

  .page-faq .faq-rail {
    display: block;
    position: sticky;
    top: 104px;
    align-self: start;
  }
}
<<<END>>>