.page-faq {
  --faq-toc-w: 264px;
  --faq-top: 118px;
  padding-bottom: 72px;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 26px;
  padding-top: 26px;
  padding-bottom: 32px;
}

.page-faq .faq-hero__lead h1 {
  font-family: var(--font-narrow);
  font-size: clamp(27px, 8vw, 46px);
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin: 12px 0 16px;
  color: var(--ink);
  max-width: 18em;
}

.page-faq .faq-hero__intro {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-hero__panel {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 18px 18px 6px;
}

.page-faq .faq-hero__panel-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-metrics {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-metric {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-metric__num {
  flex: none;
  min-width: 78px;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--orange);
}

.page-faq .faq-metric__unit {
  font-size: 13px;
  margin-left: 2px;
  color: var(--amber);
}

.page-faq .faq-metric__label {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 顶部横幅 ---------- */
.page-faq .faq-banner {
  margin: 0 0 44px;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 两栏布局 ---------- */
.page-faq .faq-layout {
  display: block;
}

.page-faq .faq-toc {
  margin-bottom: 34px;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0 0 2px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc__link {
  display: block;
  white-space: nowrap;
  padding: 8px 14px;
  border: 1px solid var(--line);
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--fast) ease, border-color var(--fast) ease, background-color var(--fast) ease;
}

.page-faq .faq-toc__link:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-toc__link[aria-current] {
  color: var(--bg);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 140px;
  margin-bottom: 54px;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 10px;
}

.page-faq .faq-group__idx {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-narrow);
  font-size: clamp(21px, 5.4vw, 29px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__desc {
  margin: 0 0 16px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 术语对照带 ---------- */
.page-faq .qa-strip {
  display: flex;
  max-width: 100%;
  overflow-x: auto;
  padding: 9px 0;
  margin-bottom: 6px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}

.page-faq .qa-strip::-webkit-scrollbar {
  display: none;
}

.page-faq .qa-strip__item {
  flex: none;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 0 14px;
  border-right: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
}

.page-faq .qa-strip__item:first-child {
  padding-left: 0;
}

.page-faq .qa-strip__item:last-child {
  border-right: 0;
}

.page-faq .qa-strip__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-soft);
}

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

.page-faq .qa__q {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px 2px;
  font-family: var(--font-narrow);
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--ink);
  transition: color var(--fast) ease;
}

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

.page-faq .qa__q:hover {
  color: var(--cyan);
}

.page-faq .qa__mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 4px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform var(--fast) ease, opacity var(--fast) ease;
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 8px;
  height: 1px;
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 1px;
}

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

.page-faq .qa__a {
  padding: 0 2px 22px 34px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  max-width: 66ch;
}

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

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 240, 196, 0.4);
}

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

/* ---------- 结尾 ---------- */
.page-faq .faq-outro {
  display: grid;
  gap: 26px;
  margin-top: 62px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-outro__media {
  margin: 0;
  max-width: 340px;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-outro__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 6;
  object-fit: cover;
}

.page-faq .faq-outro__body h2 {
  margin: 10px 0 14px;
  font-family: var(--font-narrow);
  font-size: clamp(21px, 5vw, 27px);
  line-height: 1.3;
  color: var(--ink);
}

.page-faq .faq-outro__body p {
  margin: 0 0 22px;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-banner img {
    aspect-ratio: 21 / 9;
  }

  .page-faq .faq-toc__list {
    flex-wrap: wrap;
    overflow: visible;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
    gap: 48px;
    padding-bottom: 40px;
  }

  .page-faq .faq-outro {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: center;
    gap: 48px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: var(--faq-toc-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

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

  .page-faq .faq-toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
    overflow: visible;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-toc__link {
    position: relative;
    padding: 10px 0 10px 16px;
    border: 0;
    background: transparent;
    font-size: 15px;
  }

  .page-faq .faq-toc__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: transparent;
    transition: background-color var(--fast) ease;
  }

  .page-faq .faq-toc__link:hover {
    border-color: transparent;
  }

  .page-faq .faq-toc__link:hover::before {
    background: var(--cyan-soft);
  }

  .page-faq .faq-toc__link[aria-current] {
    color: var(--cyan);
    background: transparent;
    border-color: transparent;
  }

  .page-faq .faq-toc__link[aria-current]::before {
    background: var(--cyan);
  }
}
<<<END>>>