.page-faq {
  --faq-sticky-top: 84px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 58px) 0 clamp(26px, 4vw, 46px);
  border-bottom: var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 14%;
  right: -70px;
  width: 210px;
  height: 210px;
  border: 2px solid var(--lake);
  opacity: 0.12;
  transform: rotate(12deg);
  pointer-events: none;
}

.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .faq-crumb a {
  color: var(--lake);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-crumb a:hover {
  border-bottom-color: var(--lake);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 12px 0 18px;
  max-width: 15em;
}

.page-faq .faq-hero .lead {
  max-width: 40em;
  margin: 0;
}

.page-faq .faq-stats {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink);
  border: var(--line);
}

.page-faq .faq-stats li {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 14px;
  background: var(--paper);
}

.page-faq .faq-stats b {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.15;
}

.page-faq .faq-stats span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 主栅格 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
  padding-top: clamp(24px, 4vw, 52px);
  padding-bottom: clamp(36px, 6vw, 80px);
}

.page-faq .faq-index,
.page-faq .faq-body {
  min-width: 0;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index__figure {
  display: none;
  margin: 0;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(14, 17, 22, 0.2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 12px;
  background: var(--cloud);
  border: var(--line);
  box-shadow: var(--shadow-sm);
  color: var(--ink);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.page-faq .faq-index__link:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow);
  background: var(--paper);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: 2px;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--lake);
}

.page-faq .faq-index__count {
  margin-left: auto;
  padding-left: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mist);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  --group-accent: var(--lake);
  margin-bottom: clamp(24px, 3.5vw, 40px);
  background: var(--cloud);
  border: var(--line);
  box-shadow: var(--shadow);
  scroll-margin-top: 24px;
}

.page-faq .faq-group--compare {
  --group-accent: var(--flag-green);
}

.page-faq .faq-group--act {
  --group-accent: var(--ochre);
}

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

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 16px;
  background: var(--archive);
  border-bottom: var(--line);
}

.page-faq .faq-group__num {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  background: var(--group-accent);
  border: var(--line);
  color: var(--cloud);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

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

.page-faq .faq-group__head h2 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.2vw, 23px);
  line-height: 1.28;
}

.page-faq .faq-group__desc {
  margin: 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-group__count {
  align-self: start;
  padding: 3px 7px;
  background: var(--cloud);
  border: 1px solid var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* ---------- 单条问答 ---------- */
.page-faq .qa {
  border-top: 1px solid rgba(14, 17, 22, 0.16);
}

.page-faq .qa:first-child {
  border-top: 0;
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  transition: background 0.16s ease;
}

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

.page-faq .qa__q::marker {
  content: "";
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: -2px;
}

.page-faq .qa__num {
  flex: 0 0 auto;
  min-width: 22px;
  margin-top: 3px;
  padding: 4px 5px 3px;
  text-align: center;
  background: var(--flag-yellow);
  border: 1px solid var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1;
  color: var(--ink);
}

.page-faq .qa__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa__arrow {
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  color: var(--lake);
  transition: transform 0.2s ease, color 0.2s ease;
}

.page-faq .qa[open] .qa__arrow {
  transform: rotate(90deg);
  color: var(--ochre);
}

.page-faq .qa__a {
  margin: 0 16px 20px 16px;
  padding-left: 14px;
  border-left: 2px solid var(--lake);
  max-width: 34em;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: 16px;
  line-height: 1.85;
}

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

.page-faq .qa__more {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed rgba(14, 17, 22, 0.22);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

.page-faq .qa__more a {
  color: var(--lake);
  text-decoration: none;
  border-bottom: 1px solid var(--lake);
}

.page-faq .qa__more a:hover {
  color: var(--deep);
  border-bottom-color: var(--deep);
}

.page-faq .qa[open] > .qa__a {
  animation: faq-unfold 0.28s ease both;
}

@keyframes faq-unfold {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 结尾行动区 ---------- */
.page-faq .faq-fallback {
  grid-column: 1 / -1;
  margin: 0;
}

.page-faq .faq-fallback__inner {
  display: grid;
  gap: 22px;
  padding: clamp(20px, 3.4vw, 36px);
  background: var(--ink);
  border: var(--line);
  box-shadow: var(--shadow);
}

.page-faq .faq-fallback h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 2.8vw, 30px);
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .faq-fallback p {
  margin: 0 0 14px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--archive);
}

.page-faq .faq-fallback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.page-faq .faq-fallback__figure {
  margin: 0;
  border-color: var(--paper);
  box-shadow: 8px 8px 0 var(--lake);
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-faq .qa__q {
    padding: 18px 22px;
    gap: 14px;
    font-size: clamp(16px, 1.7vw, 19px);
  }

  .page-faq .qa__a {
    margin: 0 22px 24px 58px;
    padding-left: 18px;
  }

  .page-faq .faq-group__head {
    padding: 18px 22px;
    gap: 14px;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-faq .faq-fallback__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-shell {
    grid-template-columns: 272px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index__figure {
    display: block;
    margin: 0 0 18px;
  }

  .page-faq .faq-index__sticky {
    position: sticky;
    top: var(--faq-sticky-top);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 10px;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-index__list > li {
    flex: 1 1 auto;
  }

  .page-faq .faq-index__link {
    width: 100%;
    box-sizing: border-box;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa[open] > .qa__a {
    animation: none;
  }

  .page-faq .qa__arrow,
  .page-faq .qa__q,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .faq-index__link:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
  }
}
<<<END>>>