.page-faq {
  --faq-line: rgba(42, 31, 23, .16);
  --faq-line-dark: rgba(247, 249, 255, .14);
  --faq-ink-soft: rgba(42, 31, 23, .72);
  --faq-gap: clamp(1.75rem, 4vw, 3.5rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(1.5rem, 4vw, 2.5rem) clamp(2.5rem, 7vw, 5rem);
}

.page-faq .faq-hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  margin-top: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.page-faq .faq-hero__kicker {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 1rem;
}

.page-faq h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 8vw, 3.75rem);
  line-height: 1;
  letter-spacing: -.02em;
  text-transform: uppercase;
  color: var(--edge);
  margin: 0 0 1.15rem;
}

.page-faq .faq-hero__lede {
  font-size: 1.0625rem;
  line-height: 1.78;
  color: var(--edge);
  opacity: .9;
  max-width: 34em;
  margin: 0 0 1.75rem;
}

.page-faq .faq-hero__hint {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  margin: 0;
  padding: .65rem 1rem;
  border: 1px solid var(--faq-line-dark);
  border-radius: var(--r);
  background: var(--midnight);
  font-family: var(--font-mono);
  font-size: .78rem;
  line-height: 1.4;
  color: var(--grey);
}

.page-faq .faq-hero__hint-key {
  color: var(--orange);
  font-weight: 700;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--faq-line-dark);
  border-radius: var(--r);
  background: var(--midnight);
  overflow: hidden;
}

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

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

.page-faq .faq-hero__figure .figure__caption {
  padding: .75rem 1rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--grey);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(3rem, 7vw, 5.5rem);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3.25rem);
}

/* ---------- 分类目录 ---------- */
.page-faq .faq-toc {
  order: -1;
}

.page-faq .faq-toc__title {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--grey);
  margin: 0 0 .85rem;
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding-bottom: .35rem;
  scrollbar-width: thin;
}

.page-faq .faq-toc__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  white-space: nowrap;
  padding: .5rem .8rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--r);
  font-size: .85rem;
  color: var(--faq-ink-soft);
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link[aria-current="true"] {
  color: var(--ink);
  border-color: var(--orange);
  background: rgba(255, 106, 43, .06);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--grey);
}

.page-faq .faq-toc__cta {
  display: none;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--sticky-top) + 1rem);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-top: clamp(2rem, 5vw, 3rem);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: .9rem;
  margin-bottom: .7rem;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .08em;
  color: var(--orange);
  flex: 0 0 auto;
}

.page-faq .faq-group__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 4vw, 1.875rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 0;
}

.page-faq .faq-group__intro {
  font-size: .95rem;
  line-height: 1.8;
  color: var(--faq-ink-soft);
  max-width: 34em;
  margin: 0 0 1.5rem;
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa:first-of-type {
  border-top: 1px solid var(--faq-line);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  padding: 1.05rem .15rem;
  list-style: none;
  cursor: pointer;
  transition: color .2s ease;
}

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

.page-faq .qa__q:hover .qa__text {
  color: #000;
}

.page-faq .qa__idx {
  flex: 0 0 auto;
  min-width: 1.5rem;
  padding-top: .25rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--grey);
}

.page-faq .qa__text {
  flex: 1 1 auto;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.62;
  color: var(--ink);
  transition: color .2s ease;
}

.page-faq .qa__sign {
  flex: 0 0 auto;
  width: 1.35rem;
  height: 1.35rem;
  margin-top: .15rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--faq-line);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--faq-ink-soft);
  transition: color .2s ease, border-color .2s ease;
}

.page-faq .qa__sign::before {
  content: "+";
}

.page-faq .qa[open] .qa__sign {
  color: var(--orange);
  border-color: var(--orange);
}

.page-faq .qa[open] .qa__sign::before {
  content: "−";
}

.page-faq .qa__answer {
  padding: 0 0 1.35rem 2.35rem;
  max-width: 40em;
  font-size: .95rem;
  line-height: 1.82;
  color: var(--faq-ink-soft);
}

.page-faq .qa__answer p {
  margin: 0;
}

.page-faq .qa__answer p + p {
  margin-top: .7rem;
}

.page-faq .qa__answer a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
  text-decoration-color: var(--orange);
}

.page-faq .qa__answer a:hover {
  color: var(--orange);
}

/* ---------- 刻度环配图 ---------- */
.page-faq .faq-ring {
  max-width: 18rem;
  margin: 0 auto 1.75rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--r);
  background: var(--cream);
  padding: .6rem;
}

.page-faq .faq-ring .figure__frame {
  overflow: hidden;
  border-radius: 2px;
}

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

.page-faq .faq-ring .figure__caption {
  padding-top: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--faq-ink-soft);
  text-align: center;
}

/* ---------- 结尾联系块 ---------- */
.page-faq .faq-help {
  margin-top: .5rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--carbon);
  border: 1px solid var(--faq-line-dark);
  border-radius: var(--r);
  box-shadow: var(--shadow);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-faq .faq-help__item {
  font-size: .95rem;
  line-height: 1.82;
  color: var(--edge);
  opacity: .88;
  padding-left: .9rem;
  border-left: 1px solid var(--cyan);
}

.page-faq .faq-help__key {
  display: block;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: .3rem;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 桌面 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-ring {
    margin-inline: 0;
    max-width: 19rem;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-faq .faq-body__grid {
    grid-template-columns: minmax(0, 1fr) 15rem;
    align-items: start;
  }

  .page-faq .faq-toc {
    order: 0;
    position: sticky;
    top: var(--sticky-top);
  }

  .page-faq .faq-toc__list {
    display: block;
    overflow: visible;
    margin-bottom: 1.5rem;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__list li + li {
    margin-top: .15rem;
  }

  .page-faq .faq-toc__link {
    display: flex;
    width: 100%;
    border: 0;
    border-left: 1px solid var(--faq-line);
    border-radius: 0;
    background: none;
    padding: .55rem 0 .55rem .75rem;
    white-space: normal;
    font-size: .875rem;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link[aria-current="true"] {
    background: none;
    border-left-color: var(--orange);
    padding-left: 1.05rem;
  }

  .page-faq .faq-toc__cta {
    display: inline-flex;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-group__title {
    font-size: 1.875rem;
  }

  .page-faq .qa__q {
    padding-block: 1.2rem;
  }
}
<<<END>>>