.page-faq {
  --faq-gap: clamp(40px, 6vw, 84px);
  --faq-rule: 1px solid var(--hairline);
  padding-bottom: clamp(72px, 10vw, 148px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding-top: clamp(18px, 3vw, 34px);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin-top: clamp(18px, 3vw, 34px);
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid var(--hairline);
  background: linear-gradient(180deg, rgba(14, 42, 34, 0.6), rgba(8, 23, 19, 0) 70%);
}

.page-faq .faq-hero::before,
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 7px;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    var(--hairline) 0 1px,
    transparent 1px 14px
  );
}

.page-faq .faq-hero::before { top: -4px; }
.page-faq .faq-hero::after { bottom: -4px; }

.page-faq .faq-hero .frame__tag {
  position: absolute;
  top: -1px;
  left: clamp(24px, 4vw, 48px);
  transform: translateY(-50%);
  padding: 3px 10px;
  background: var(--night-ink);
  border: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--lime-signal);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

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

.page-faq .faq-hero__text .index-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12px;
  color: var(--stone-grey);
}

.page-faq .faq-hero__text .mono,
.page-faq .faq-hero__text .index-row__mark {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.page-faq .faq-hero__text .index-row__mark { color: var(--gold-record); }
.page-faq .faq-hero__text .index-row__sep { color: var(--hairline); }

.page-faq .faq-hero h1 {
  margin: clamp(14px, 2vw, 22px) 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 6.4vw, 62px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--bone-white);
}

.page-faq .faq-hero .lead {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--bone-white);
}

.page-faq .faq-hero .note {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone-grey);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-hero__jump a {
  display: inline-block;
  padding: 8px 13px;
  border: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone-grey);
  text-decoration: none;
  transition: border-color 140ms ease-out, color 140ms ease-out;
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  border-color: var(--lime-signal);
  color: var(--lime-signal);
}

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

.page-faq .faq-hero__figure .img-frame {
  width: 100%;
  max-width: 290px;
  margin-inline: auto;
}

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

.page-faq .faq-hero__figure .figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--stone-grey);
  text-align: center;
}

/* ---------- 筛选器 ---------- */
.page-faq .faq-filters {
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: 18px;
  border-top: var(--faq-rule);
}

.page-faq .faq-filters .filters {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
}

.page-faq .faq-filters .filter-group {
  min-width: 0;
}

.page-faq .faq-filters .filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.page-faq .faq-filters__note {
  margin: 16px 0 0;
  max-width: 66ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone-grey);
}

/* ---------- 目录 ---------- */
.page-faq .faq-toc {
  list-style: none;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}

.page-faq .faq-toc li {
  background: var(--night-ink);
  min-width: 0;
}

.page-faq .faq-toc a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--bone-white);
  text-decoration: none;
  transition: background-color 140ms ease-out, color 140ms ease-out;
}

.page-faq .faq-toc a:hover,
.page-faq .faq-toc a:focus-visible {
  background: var(--moss-panel);
  color: var(--lime-signal);
}

.page-faq .faq-toc .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--clay-accent);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(44px, 6vw, 72px);
  align-items: start;
  margin-top: clamp(44px, 6vw, 88px);
}

.page-faq .faq-body__main { min-width: 0; }
.page-faq .faq-body__aside { min-width: 0; }

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 28px);
}

.page-faq .faq-group + .faq-group {
  margin-top: var(--faq-gap);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 18px;
}

.page-faq .faq-group__code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-record);
  border: 1px solid var(--hairline);
  padding: 3px 9px;
  white-space: nowrap;
}

.page-faq .faq-group__head .h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 27px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--bone-white);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  border-top: var(--faq-rule);
}

.page-faq .qa:last-of-type {
  border-bottom: var(--faq-rule);
}

.page-faq .qa > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  padding: 18px 2px;
  color: var(--bone-white);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  transition: color 140ms ease-out;
}

.page-faq .qa > summary::-webkit-details-marker { display: none; }
.page-faq .qa > summary::marker { content: ""; }

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  color: var(--lime-signal);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

.page-faq .qa[open] > summary {
  color: var(--lime-signal);
}

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  font-variant-numeric: tabular-nums;
  color: var(--stone-grey);
}

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

.page-faq .qa__mark {
  position: relative;
  width: 12px;
  height: 12px;
  margin-top: 7px;
  flex: none;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--stone-grey);
  transition: transform 160ms ease-out, background-color 160ms ease-out;
}

.page-faq .qa__mark::before {
  top: 5px;
  left: 0;
  width: 12px;
  height: 1px;
}

.page-faq .qa__mark::after {
  top: 0;
  left: 5px;
  width: 1px;
  height: 12px;
}

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

.page-faq .qa[open] .qa__mark::before {
  background: var(--lime-signal);
}

.page-faq .qa__a {
  padding: 0 2px 24px;
}

.page-faq .qa__a p {
  margin: 0 0 12px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--stone-grey);
}

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

.page-faq .qa__a a {
  color: var(--bone-white);
  text-decoration: none;
  border-bottom: 1px solid var(--lime-signal);
  transition: color 140ms ease-out;
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--lime-signal);
}

.page-faq .caliber {
  display: inline;
  padding: 1px 7px;
  background: var(--moss-panel);
  border-left: 2px solid var(--lime-signal);
  color: var(--bone-white);
  font-variant-numeric: tabular-nums;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

/* ---------- 右侧口径速览 ---------- */
.page-faq .faq-aside {
  border-top: 1px solid var(--gold-record);
  padding-top: 22px;
}

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

.page-faq .faq-aside__img .img-frame {
  width: 100%;
  max-width: 160px;
}

.page-faq .faq-aside__img img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-aside__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--bone-white);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 14px 0 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}

.page-faq .faq-facts li {
  background: var(--night-ink);
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--stone-grey);
}

.page-faq .faq-facts .num {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 23px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--gold-record);
}

.page-faq .faq-aside__foot {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone-grey);
}

.page-faq .faq-aside__foot a {
  color: var(--bone-white);
  text-decoration: none;
  border-bottom: 1px solid var(--clay-accent);
}

.page-faq .faq-aside__foot a:hover,
.page-faq .faq-aside__foot a:focus-visible {
  color: var(--clay-accent);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__figure .img-frame {
    max-width: 320px;
    margin-inline: 0;
  }

  .page-faq .faq-hero__figure .figure__caption {
    text-align: left;
  }

  .page-faq .qa__a {
    padding-left: 40px;
  }
}

/* ---------- 桌面两栏 + 粘性侧栏 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.75fr) minmax(200px, 0.7fr);
  }

  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1.62fr) minmax(250px, 0.88fr);
    gap: clamp(48px, 6vw, 92px);
  }

  .page-faq .faq-body__aside {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
    align-self: start;
  }

  .page-faq .faq-aside {
    border-top: none;
    border-left: 1px solid var(--gold-record);
    padding-top: 0;
    padding-left: 24px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__jump a,
  .page-faq .faq-toc a,
  .page-faq .qa > summary,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after {
    transition: none;
  }
}
<<<END>>>