.page-faq {
  --faq-rail: 220px;
  --faq-indent: 0px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  background: var(--ng-night);
  color: var(--ng-paper);
  padding: var(--space-3) 0 var(--space-4);
}

.page-faq .faq-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 var(--space-2);
  padding: 0;
  font-size: var(--label);
  letter-spacing: .04em;
}

.page-faq .faq-hero .breadcrumb__link {
  color: rgba(244, 240, 230, .68);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb__link:hover {
  color: var(--ng-signal);
}

.page-faq .faq-hero .breadcrumb__current {
  color: var(--ng-paper);
}

.page-faq .faq-hero__frame {
  position: relative;
  border: 1px solid var(--line-dark);
  padding: var(--space-3) var(--space-2) var(--space-3);
}

.page-faq .faq-hero__frame .frame__corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--ng-signal);
}

.page-faq .faq-hero__frame .frame__corner--tl { top: -2px; left: -2px; border-right: 0; border-bottom: 0; }
.page-faq .faq-hero__frame .frame__corner--tr { top: -2px; right: -2px; border-left: 0; border-bottom: 0; }
.page-faq .faq-hero__frame .frame__corner--bl { bottom: -2px; left: -2px; border-right: 0; border-top: 0; }
.page-faq .faq-hero__frame .frame__corner--br { bottom: -2px; right: -2px; border-left: 0; border-top: 0; }

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  align-items: end;
}

.page-faq .eyebrow {
  margin: 0 0 10px;
  font-size: var(--label);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ng-pitch);
}

.page-faq .faq-hero .eyebrow {
  color: var(--ng-trophy);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-title);
  font-size: var(--h1);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.01em;
  margin: 0 0 var(--space-2);
  color: var(--ng-paper);
}

.page-faq .faq-hero .leader {
  max-width: 40ch;
  margin: 0 0 var(--space-3);
  font-size: 1.02rem;
  line-height: 1.85;
  color: rgba(244, 240, 230, .84);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin: 0;
  padding-top: var(--space-2);
  border-top: 1px solid var(--line-dark);
}

.page-faq .faq-hero__stats .stat {
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
}

.page-faq .faq-hero__stats .stat__label {
  font-size: var(--label);
  line-height: 1.5;
  color: rgba(244, 240, 230, .6);
}

.page-faq .faq-hero__stats .stat__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--ng-signal);
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-faq .faq-hero__stats .stat__unit {
  font-size: var(--label);
  color: rgba(244, 240, 230, .7);
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure .figure__img,
.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(.72) contrast(1.02);
  box-shadow: inset 0 0 0 1px var(--line-dark);
}

.page-faq .faq-hero__figure .figure__caption {
  margin-top: 10px;
  font-size: var(--label);
  color: rgba(244, 240, 230, .58);
  letter-spacing: .02em;
}

/* ---------- 页面主体 ---------- */
.page-faq .faq-body {
  background: var(--ng-paper);
  color: var(--ng-ink);
  padding: var(--space-3) 0 var(--space-4);
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--space-3);
}

.page-faq .filter-chip {
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ng-stone);
  font: inherit;
  font-size: .85rem;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .filter-chip:hover {
  border-color: var(--ng-pitch);
  color: var(--ng-pitch);
}

.page-faq .filter-chip.is-active {
  background: var(--ng-night);
  border-color: var(--ng-night);
  color: var(--ng-paper);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
}

/* ---------- 目录 ---------- */
.page-faq .toc__title {
  margin: 0 0 10px;
  font-size: var(--label);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ng-slate);
}

.page-faq .toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .toc__link {
  display: block;
  padding: 8px 12px;
  border-left: 2px solid var(--line-soft);
  font-size: .88rem;
  color: var(--ng-stone);
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .toc__link:hover {
  color: var(--ng-ink);
  border-left-color: var(--ng-pitch);
}

.page-faq .toc__link.is-current {
  color: var(--ng-ink);
  font-weight: 600;
  border-left-color: var(--ng-signal);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding-top: var(--space-3);
  margin-top: var(--space-3);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: var(--space-2);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--ng-signal);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--ng-ink);
}

.page-faq .faq-group__desc {
  flex: 1 1 100%;
  margin: 0;
  max-width: 46ch;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--ng-stone);
}

.page-faq .tag {
  display: inline-block;
  padding: 4px 9px;
  font-size: var(--label);
  letter-spacing: .04em;
  line-height: 1.4;
  border: 1px solid currentColor;
}

.page-faq .tag--pitch { color: var(--ng-pitch); }
.page-faq .tag--trophy { color: var(--ng-trophy); }
.page-faq .tag--slate { color: var(--ng-slate); }
.page-faq .tag--clay { color: var(--ng-clay); }
.page-faq .tag--signal { color: var(--ng-signal); }

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  transition: border-color .18s var(--ease), padding-left .18s var(--ease);
}

.page-faq .qa:hover,
.page-faq .qa[open] {
  border-left-color: var(--ng-pitch);
  padding-left: 10px;
}

.page-faq .fold__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .fold__summary:focus-visible {
  outline: 2px solid var(--ng-signal);
  outline-offset: 2px;
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: .86rem;
  color: var(--ng-signal);
  letter-spacing: .02em;
}

.page-faq .qa__q {
  font-family: var(--font-title);
  font-size: 1.04rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ng-ink);
}

.page-faq .qa__mark {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--ng-stone);
  transition: transform .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
}

.page-faq .qa[open] .qa__mark::before,
.page-faq .qa[open] .qa__mark::after {
  background: var(--ng-pitch);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .fold__body {
  padding: 0 0 22px;
}

.page-faq .qa__text {
  max-width: 62ch;
  margin: 0 0 12px;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--ng-stone);
}

.page-faq .qa__text:last-of-type {
  margin-bottom: 0;
}

.page-faq .qa__text a {
  color: var(--ng-pitch);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-faq .qa__text a:hover {
  color: var(--ng-signal);
  border-bottom-color: var(--ng-signal);
}

.page-faq .qa-points {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .qa-points li {
  position: relative;
  padding-left: 18px;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--ng-ink);
}

.page-faq .qa-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 7px;
  height: 7px;
  background: var(--ng-pitch);
}

.page-faq .qa-note {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--ng-slate);
}

.page-faq .qa-note b {
  font-weight: 600;
  color: var(--ng-ink);
}

.page-faq .qa-copy {
  display: inline-flex;
  align-items: center;
  margin-top: 14px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ng-stone);
  font: inherit;
  font-size: .84rem;
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .qa-copy:hover {
  border-color: var(--ng-signal);
  color: var(--ng-signal);
}

.page-faq .qa-copy__status {
  display: inline-block;
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--ng-pitch);
}

/* ---------- 组内插图 ---------- */
.page-faq .faq-figure {
  margin: var(--space-2) 0 var(--space-3);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.7);
}

.page-faq .faq-figure .figure__caption {
  margin-top: 10px;
  font-size: var(--label);
  color: var(--ng-stone);
  letter-spacing: .02em;
}

/* ---------- 节奏组底色带 ---------- */
.page-faq .faq-group--rhythm {
  background: rgba(110, 140, 168, .09);
  padding: var(--space-3) var(--space-2);
  border-top: 1px solid var(--line);
}

/* ---------- 收束区 ---------- */
.page-faq .faq-coda {
  background: var(--ng-night);
  color: var(--ng-paper);
  padding: var(--space-4) 0;
}

.page-faq .faq-coda .eyebrow {
  color: var(--ng-trophy);
}

.page-faq .faq-coda h2 {
  margin: 0 0 12px;
  font-family: var(--font-title);
  font-size: var(--h2);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--ng-paper);
}

.page-faq .faq-coda__lede {
  max-width: 50ch;
  margin: 0 0 var(--space-3);
  font-size: .98rem;
  line-height: 1.85;
  color: rgba(244, 240, 230, .78);
}

.page-faq .faq-coda__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
}

.page-faq .faq-coda__link {
  display: block;
  padding: 12px 0 12px 16px;
  border-left: 2px solid var(--line-dark);
  color: inherit;
  text-decoration: none;
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-coda__link:hover {
  border-left-color: var(--ng-signal);
  transform: translateX(4px);
}

.page-faq .faq-coda__title {
  display: block;
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ng-paper);
}

.page-faq .faq-coda__desc {
  display: block;
  font-size: .88rem;
  line-height: 1.7;
  color: rgba(244, 240, 230, .66);
}

/* ---------- 过滤后隐藏空分组 ---------- */
.page-faq .faq-group:not(:has(.qa:not([hidden]))) {
  display: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 180px));
  }

  .page-faq .faq-coda__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3) var(--space-3);
  }

  .page-faq .fold__body {
    padding-left: 46px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: var(--space-4) 0;
  }

  .page-faq .faq-hero__frame {
    padding: var(--space-4) var(--space-3);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-4);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--space-4);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 120px;
  }

  .page-faq .toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .toc__link {
    padding: 10px 12px;
  }
}

@media (reduce) {
  .page-faq .qa,
  .page-faq .faq-coda__link,
  .page-faq .filter-chip {
    transition: none;
  }
}
</
<<<PAGE_CSS_END>>>
<<<MAIN_HTML_END>>>
<<<END>>>

.page-faq {
  --faq-rail: 220px;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  background: var(--ng-night);
  color: var(--ng-paper);
  padding: var(--space-3) 0 var(--space-4);
}

.page-faq .faq-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0 0 var(--space-2);
  padding: 0;
  font-size: var(--label);
  letter-spacing: .04em;
}

.page-faq .faq-hero .breadcrumb__link {
  color: rgba(244, 240, 230, .66);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb__link:hover {
  color: var(--ng-signal);
}

.page-faq .faq-hero .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 10px;
  color: rgba(244, 240, 230, .3);
}

.page-faq .faq-hero .breadcrumb__current {
  color: var(--ng-paper);
}

.page-faq .faq-hero__frame {
  position: relative;
  padding: var(--space-3) var(--space-2) var(--space-3);
  border: 1px solid var(--line-dark);
}

.page-faq .faq-hero__frame .frame__corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--ng-signal);
}

.page-faq .faq-hero__frame .frame__corner--tl { top: -2px; left: -2px; border-right: 0; border-bottom: 0; }
.page-faq .faq-hero__frame .frame__corner--tr { top: -2px; right: -2px; border-left: 0; border-bottom: 0; }
.page-faq .faq-hero__frame .frame__corner--bl { bottom: -2px; left: -2px; border-right: 0; border-top: 0; }
.page-faq .faq-hero__frame .frame__corner--br { bottom: -2px; right: -2px; border-left: 0; border-top: 0; }

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  align-items: end;
}

.page-faq .eyebrow {
  margin: 0 0 10px;
  font-size: var(--label);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ng-pitch);
}

.page-faq .faq-hero .eyebrow {
  color: var(--ng-trophy);
}

.page-faq .faq-hero h1 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-title);
  font-size: var(--h1);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--ng-paper);
}

.page-faq .faq-hero .leader {
  max-width: 42ch;
  margin: 0 0 var(--space-3);
  font-size: 1.02rem;
  line-height: 1.85;
  color: rgba(244, 240, 230, .84);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin: 0;
  padding-top: var(--space-2);
  border-top: 1px solid var(--line-dark);
}

.page-faq .faq-hero__stats .stat {
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
}

.page-faq .faq-hero__stats .stat__label {
  font-size: var(--label);
  line-height: 1.5;
  color: rgba(244, 240, 230, .58);
}

.page-faq .faq-hero__stats .stat__value {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.45rem;
  color: var(--ng-signal);
}

.page-faq .faq-hero__stats .stat__unit {
  font-size: var(--label);
  color: rgba(244, 240, 230, .68);
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(.72) contrast(1.02);
  outline: 1px solid var(--line-dark);
  outline-offset: -1px;
}

.page-faq .faq-hero__figure .figure__caption {
  margin-top: 10px;
  font-size: var(--label);
  letter-spacing: .02em;
  color: rgba(244, 240, 230, .56);
}

/* ---------- 页面主体 ---------- */
.page-faq .faq-body {
  background: var(--ng-paper);
  color: var(--ng-ink);
  padding: var(--space-3) 0 var(--space-4);
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--line);
}

.page-faq .filter-chip {
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ng-stone);
  font: inherit;
  font-size: .85rem;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .filter-chip:hover {
  border-color: var(--ng-pitch);
  color: var(--ng-pitch);
}

.page-faq .filter-chip.is-active {
  background: var(--ng-night);
  border-color: var(--ng-night);
  color: var(--ng-paper);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
}

/* ---------- 目录 ---------- */
.page-faq .toc__title {
  margin: 0 0 10px;
  font-size: var(--label);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ng-slate);
}

.page-faq .toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .toc__link {
  display: block;
  padding: 8px 12px;
  border-left: 2px solid var(--line-soft);
  font-size: .88rem;
  color: var(--ng-stone);
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .toc__link:hover {
  color: var(--ng-ink);
  border-left-color: var(--ng-pitch);
}

.page-faq .toc__link.is-current {
  border-left-color: var(--ng-signal);
  color: var(--ng-ink);
  font-weight: 600;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: var(--space-2);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--ng-signal);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--ng-ink);
}

.page-faq .faq-group__desc {
  flex: 1 1 100%;
  margin: 0;
  max-width: 46ch;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--ng-stone);
}

.page-faq .tag {
  display: inline-block;
  padding: 4px 9px;
  border: 1px solid currentColor;
  font-size: var(--label);
  line-height: 1.4;
  letter-spacing: .04em;
}

.page-faq .tag--pitch { color: var(--ng-pitch); }
.page-faq .tag--trophy { color: var(--ng-trophy); }
.page-faq .tag--slate { color: var(--ng-slate); }
.page-faq .tag--clay { color: var(--ng-clay); }
.page-faq .tag--signal { color: var(--ng-signal); }

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line-soft);
  border-left: 2px solid transparent;
  transition: border-color .18s var(--ease), padding-left .18s var(--ease);
}

.page-faq .qa:hover,
.page-faq .qa[open] {
  border-left-color: var(--ng-pitch);
  padding-left: 10px;
}

.page-faq .fold__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .fold__summary:focus-visible {
  outline: 2px solid var(--ng-signal);
  outline-offset: 2px;
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: .86rem;
  letter-spacing: .02em;
  color: var(--ng-signal);
}

.page-faq .qa__q {
  font-family: var(--font-title);
  font-size: 1.04rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ng-ink);
}

.page-faq .qa__mark {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--ng-stone);
  transition: transform .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
}

.page-faq .qa[open] .qa__mark::before,
.page-faq .qa[open] .qa__mark::after {
  background: var(--ng-pitch);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .fold__body {
  padding: 0 0 22px;
}

.page-faq .qa__text {
  max-width: 62ch;
  margin: 0 0 12px;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--ng-stone);
}

.page-faq .qa__text:last-of-type {
  margin-bottom: 0;
}

.page-faq .qa__text a {
  color: var(--ng-pitch);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-faq .qa__text a:hover {
  color: var(--ng-signal);
  border-bottom-color: var(--ng-signal);
}

.page-faq .qa-points {
  display: grid;
  gap: 8px;
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}

.page-faq .qa-points li {
  position: relative;
  padding-left: 18px;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--ng-ink);
}

.page-faq .qa-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 7px;
  height: 7px;
  background: var(--ng-pitch);
}

.page-faq .qa-note {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--ng-slate);
}

.page-faq .qa-note b {
  font-weight: 600;
  color: var(--ng-ink);
}

.page-faq .qa-copy {
  display: inline-flex;
  align-items: center;
  margin-top: 14px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ng-stone);
  font: inherit;
  font-size: .84rem;
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .qa-copy:hover {
  border-color: var(--ng-signal);
  color: var(--ng-signal);
}

.page-faq .qa-copy__status {
  display: inline-block;
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--ng-pitch);
}

/* ---------- 组内插图 ---------- */
.page-faq .faq-figure {
  margin: var(--space-2) 0 var(--space-3);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.7);
}

.page-faq .faq-figure .figure__caption {
  margin-top: 10px;
  font-size: var(--label);
  letter-spacing: .02em;
  color: var(--ng-stone);
}

/* ---------- 节奏组底色带 ---------- */
.page-faq .faq-group--rhythm {
  padding: var(--space-3) var(--space-2);
  border-top: 1px solid var(--line);
  background: rgba(110, 140, 168, .09);
}

/* ---------- 收束区 ---------- */
.page-faq .faq-coda {
  background: var(--ng-night);
  color: var(--ng-paper);
  padding: var(--space-4) 0;
}

.page-faq .faq-coda .eyebrow {
  color: var(--ng-trophy);
}

.page-faq .faq-coda h2 {
  margin: 0 0 12px;
  font-family: var(--font-title);
  font-size: var(--h2);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--ng-paper);
}

.page-faq .faq-coda__lede {
  max-width: 50ch;
  margin: 0 0 var(--space-3);
  font-size: .98rem;
  line-height: 1.85;
  color: rgba(244, 240, 230, .78);
}

.page-faq .faq-coda__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
}

.page-faq .faq-coda__link {
  display: block;
  padding: 12px 0 12px 16px;
  border-left: 2px solid var(--line-dark);
  color: inherit;
  text-decoration: none;
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-faq .faq-coda__link:hover {
  border-left-color: var(--ng-signal);
  transform: translateX(4px);
}

.page-faq .faq-coda__title {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--ng-paper);
}

.page-faq .faq-coda__desc {
  display: block;
  font-size: .88rem;
  line-height: 1.7;
  color: rgba(244, 240, 230, .66);
}

/* ---------- 过滤后隐藏空分组 ---------- */
.page-faq .faq-group:not(:has(.qa:not([hidden]))) {
  display: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 180px));
  }

  .page-faq .faq-coda__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-faq .fold__body {
    padding-left: 46px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: var(--space-4) 0;
  }

  .page-faq .faq-hero__frame {
    padding: var(--space-4) var(--space-3);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-4);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--space-4);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 120px;
  }

  .page-faq .toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .toc__link {
    padding: 10px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .faq-coda__link,
  .page-faq .filter-chip,
  .page-faq .toc__link,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after {
    transition: none;
  }
}
<<<END>>>