.page-faq {
  --faq-shadow: 8px 8px 0 rgba(23, 79, 60, .85);
  --faq-paper-shadow: 8px 8px 0 rgba(16, 35, 29, .22);
}

/* ---------- 首屏 ---------- */

.page-faq__head .breadcrumb {
  margin-bottom: 1.5rem;
}

.page-faq__head-grid {
  display: grid;
  gap: 2rem;
}

.page-faq__head-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .625rem;
  margin-top: 1.5rem;
}

.page-faq__head-aside {
  border: var(--frame) solid var(--line);
  background: var(--ink-700);
  padding: 1.125rem 1.25rem 1.5rem;
  box-shadow: var(--hard-shadow);
}

.page-faq__aside-label {
  margin: 0 0 .5rem;
  font-size: .6875rem;
  letter-spacing: .16em;
  color: var(--score-grey);
}

.page-faq__aside-value {
  margin: 0 0 .75rem;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
  color: var(--lime-signal);
}

.page-faq__aside-note {
  margin: 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--white);
}

/* ---------- 章节索引 ---------- */

.page-faq__rules-figure {
  margin: 1.75rem 0 2.25rem;
}

.page-faq__chapters {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--frame) solid var(--line);
}

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

.page-faq__chapter-link {
  display: grid;
  grid-template-columns: 4.75rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: .75rem;
  padding: .875rem .25rem;
  text-decoration: none;
  color: var(--white);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq__chapter-link:hover,
.page-faq__chapter-link:focus-visible {
  background: var(--ink-700);
  color: var(--lime-signal);
}

.page-faq__chapter-num {
  font-size: .8125rem;
  letter-spacing: .12em;
  color: var(--lime-signal);
}

.page-faq__chapter-name {
  font-size: .9375rem;
  line-height: 1.6;
}

.page-faq__chapter-count {
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--score-grey);
  white-space: nowrap;
}

/* ---------- 折叠面板 ---------- */

.page-faq__panel {
  margin: 0 0 .875rem;
  border-left-width: 3px;
  border-left-color: var(--line);
  transition: border-left-color var(--dur) var(--ease);
}

.page-faq__panel[open] {
  border-left-color: var(--lime-signal);
}

.page-faq__panel:last-child {
  margin-bottom: 0;
}

.page-faq__entries {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .875rem;
}

.page-faq__entry {
  display: grid;
  gap: .3rem;
  padding-bottom: .875rem;
  border-bottom: 1px solid var(--line);
}

.page-faq__entry:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq__entry-num {
  font-size: .6875rem;
  letter-spacing: .14em;
  color: var(--lime-mute);
}

.page-faq__entry p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--white);
}

/* ---------- 高频口径问答 ---------- */

.page-faq__filter {
  margin-bottom: 1.5rem;
}

.page-faq__qa-grid {
  display: grid;
  gap: .75rem;
}

.page-faq__filter-empty {
  margin: 1.25rem 0 0;
  font-size: .875rem;
  color: var(--score-grey);
}

.page-faq [hidden] {
  display: none;
}

.page-faq__offside-figure {
  margin: 2.5rem 0 0;
}

/* ---------- 纸区通用排版 ---------- */

.page-faq .section--paper {
  color: var(--paper-ink);
}

.page-faq .section--paper .section__title {
  color: var(--paper-ink);
}

.page-faq .section--paper .section__note {
  color: var(--paper-grey);
}

.page-faq__paper-block {
  display: grid;
  gap: 2rem;
}

.page-faq__prose {
  max-width: 36em;
}

.page-faq__prose p {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--paper-ink);
}

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

.page-faq__stamp {
  display: inline-block;
  background: var(--amber-mark);
  color: var(--paper-ink);
  font-size: .75rem;
  letter-spacing: .12em;
  padding: .375rem .75rem;
}

.page-faq__subhead {
  margin: 1.75rem 0 .75rem;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--paper-ink);
}

.page-faq__inline-link {
  color: var(--paper-ink);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-faq__inline-link:hover,
.page-faq__inline-link:focus-visible {
  color: var(--ink-700);
  text-decoration-color: var(--lime-signal);
}

.page-faq .section--ink .page-faq__inline-link {
  color: var(--lime-signal);
  text-decoration-color: var(--lime-mute);
}

.page-faq .section--ink .page-faq__inline-link:hover,
.page-faq .section--ink .page-faq__inline-link:focus-visible {
  color: var(--white);
  text-decoration-color: var(--lime-signal);
}

.page-faq__scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .625rem;
}

.page-faq__scope-list li {
  position: relative;
  padding-left: 1.375rem;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--paper-ink);
}

.page-faq__scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: .75rem;
  height: 3px;
  background: var(--paper-ink);
}

.page-faq__scope-list--yes li::before {
  background: var(--lime-mute);
}

.page-faq__scope-list--no li::before {
  background: var(--amber-mark);
}

/* ---------- 口径边界清单 ---------- */

.page-faq__cutoff-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.125rem;
  align-content: start;
}

.page-faq__cutoff-item {
  border-left: 3px solid var(--paper-line);
  padding: .25rem 0 .25rem 1rem;
}

.page-faq__cutoff-title {
  margin: 0 0 .3rem;
  font-size: .9375rem;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--paper-ink);
}

.page-faq__cutoff-text {
  margin: 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--paper-grey);
}

.page-faq__cutoff-text a {
  color: var(--paper-ink);
}

/* ---------- 回改进程 ---------- */

.page-faq__steps {
  list-style: none;
  margin: 0 0 2.5rem;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--frame) solid var(--line);
}

.page-faq__step {
  display: grid;
  gap: .5rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.page-faq__step-num {
  font-size: .6875rem;
  letter-spacing: .16em;
  color: var(--lime-signal);
}

.page-faq__step-title {
  margin: 0 0 .4rem;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .05em;
  color: var(--white);
}

.page-faq__step-text {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--score-grey);
}

.page-faq__step-text a {
  color: var(--lime-signal);
}

.page-faq__revision-stats {
  gap: 1rem;
}

/* ---------- 联系卡片 ---------- */

.page-faq__contact-card {
  align-self: start;
  background: var(--paper-ink);
  color: var(--paper);
  padding: 1.5rem 1.375rem 1.625rem;
  box-shadow: var(--faq-paper-shadow);
}

.page-faq__contact-title {
  margin: 0 0 1rem;
  font-size: .8125rem;
  letter-spacing: .18em;
  color: var(--lime-mute);
  font-family: var(--font-mono);
}

.page-faq__contact {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-faq__contact-row {
  display: grid;
  gap: .25rem;
  padding: .625rem 0;
  border-bottom: 1px solid rgba(237, 243, 239, .18);
}

.page-faq__contact-row:last-child {
  border-bottom: 0;
}

.page-faq__contact-row dt {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .14em;
  color: var(--lime-mute);
}

.page-faq__contact-row dd {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq__contact-note {
  margin: 1.125rem 0 0;
  font-size: .8125rem;
  line-height: 1.75;
  color: rgba(237, 243, 239, .72);
}

/* ---------- 检索路径 ---------- */

.page-faq__paths {
  display: grid;
  gap: 1.25rem;
}

.page-faq__path {
  border: var(--frame) solid var(--line);
  background: var(--ink-700);
  padding: 1.5rem 1.375rem 1.625rem;
}

.page-faq__path-num {
  margin: 0 0 .75rem;
  font-size: .6875rem;
  letter-spacing: .18em;
  color: var(--amber-mark);
}

.page-faq__path-title {
  margin: 0 0 .875rem;
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--white);
}

.page-faq__path-text {
  margin: 0 0 .875rem;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--score-grey);
}

.page-faq__path-text:last-child {
  margin-bottom: 0;
}

/* ---------- 响应式 ---------- */

@media (min-width: 40rem) {
  .page-faq__step {
    grid-template-columns: 6rem minmax(0, 1fr);
    gap: 1.5rem;
    align-items: start;
  }

  .page-faq__chapters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 2.5rem;
  }

  .page-faq__qa-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1.5rem;
  }
}

@media (min-width: 60rem) {
  .page-faq__head-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: 3.5rem;
    align-items: end;
  }

  .page-faq__paper-block {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: 3rem;
  }

  .page-faq__paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem;
  }

  .page-faq__revision-stats {
    column-gap: 1.5rem;
  }
}

@media (min-width: 80rem) {
  .page-faq__chapters {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq__paper-block {
    column-gap: 4.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq__chapter-link,
  .page-faq__panel {
    transition: none;
  }
}
<<<END>>>