.page-faq {
  --faq-radius: 12px;
  --faq-index-w: 258px;
}

.page-faq .breadcrumb {
  padding-top: 24px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  background:
    radial-gradient(760px 380px at 84% -6%, rgba(47, 125, 255, 0.18), transparent 62%),
    radial-gradient(620px 320px at -4% 104%, rgba(255, 122, 26, 0.09), transparent 66%);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 44px;
}

.page-faq .faq-hero-copy {
  max-width: 640px;
}

.page-faq .faq-hero-copy h1 {
  margin: 14px 0 0;
  font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.75rem);
  line-height: 1.24;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-hero-lead {
  margin: 18px 0 0;
  max-width: 560px;
  font-size: var(--fz-16);
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-hero-facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
}

.page-faq .faq-hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-fact-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--fz-20);
  color: var(--ice);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-fact-label {
  font-size: var(--fz-12);
  color: var(--mist);
  letter-spacing: 0.04em;
}

.page-faq .faq-hero-media {
  margin: 0;
  border-radius: var(--faq-radius);
  border: 1px solid var(--line-soft);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

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

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 30px;
  padding-top: 4px;
  padding-bottom: 48px;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  align-self: start;
}

.page-faq .faq-index-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-index-link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: 8px;
  text-decoration: none;
  color: var(--mist);
  font-size: var(--fz-14);
  transition:
    background var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-faq .faq-index-link:hover {
  background: rgba(47, 125, 255, 0.09);
  border-color: var(--line);
  color: var(--white);
}

.page-faq .faq-index-link:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  color: var(--white);
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  font-weight: 700;
  color: var(--blue);
}

.page-faq .faq-index-name {
  line-height: 1.4;
}

.page-faq .faq-index-link .status-dot {
  flex: none;
}

.page-faq .faq-index-note {
  margin: 16px 0 0;
  padding: 12px 14px;
  border: 1px dashed var(--line-soft);
  border-radius: 8px;
  font-size: var(--fz-12);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: 44px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px 12px;
  align-items: baseline;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: var(--fz-14);
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.04em;
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-size: var(--fz-20);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group-intro {
  grid-column: 2;
  margin: 8px 0 0;
  max-width: 52ch;
  font-size: var(--fz-14);
  line-height: 1.68;
  color: var(--mist);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa-item {
  margin-bottom: 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(17, 28, 46, 0.72), rgba(11, 18, 32, 0.72));
  transition:
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-faq .qa-item:hover {
  border-color: rgba(47, 125, 255, 0.4);
}

.page-faq .qa-item[open] {
  border-color: rgba(47, 125, 255, 0.55);
  box-shadow: var(--shadow-2);
  background: linear-gradient(180deg, rgba(22, 35, 58, 0.92), rgba(11, 18, 32, 0.88));
}

.page-faq .qa-summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 56px;
  padding: 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-summary::marker {
  content: "";
}

.page-faq .qa-summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  border-radius: var(--faq-radius);
}

.page-faq .qa-num {
  flex: none;
  min-width: 22px;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  font-weight: 500;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
  transition: color var(--dur) var(--ease);
}

.page-faq .qa-item[open] .qa-num {
  color: var(--blue);
}

.page-faq .qa-q {
  flex: 1 1 auto;
  font-size: var(--fz-16);
  font-weight: 500;
  line-height: 1.55;
  color: var(--white);
}

.page-faq .qa-chev {
  flex: none;
  width: 12px;
  height: 12px;
  margin-top: 7px;
  border-right: 1.5px solid var(--mist);
  border-bottom: 1.5px solid var(--mist);
  transform: rotate(45deg);
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    margin-top var(--dur) var(--ease);
}

.page-faq .qa-item[open] .qa-chev {
  margin-top: 11px;
  transform: rotate(-135deg);
  border-color: var(--blue);
}

.page-faq .qa-a {
  position: relative;
  padding: 0 16px 18px 50px;
}

.page-faq .qa-a::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 0;
  bottom: 24px;
  width: 1px;
  background: linear-gradient(180deg, rgba(47, 125, 255, 0.55), rgba(47, 125, 255, 0.06));
}

.page-faq .qa-a p {
  margin: 0 0 10px;
  max-width: 58ch;
  font-size: var(--fz-14);
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .qa-a p:last-of-type {
  margin-bottom: 0;
}

.page-faq .qa-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 14px;
}

.page-faq .qa-anchor {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 0;
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition:
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .qa-anchor:hover {
  color: var(--white);
  border-bottom-color: var(--blue);
}

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

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: rgba(17, 28, 46, 0.5);
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  font-size: var(--fz-12);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 结尾 ---------- */
.page-faq .faq-final-wrap {
  padding-bottom: 64px;
}

.page-faq .faq-final {
  display: grid;
  gap: 22px;
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background:
    radial-gradient(620px 240px at 100% 0%, rgba(255, 122, 26, 0.13), transparent 66%),
    radial-gradient(520px 220px at 0% 100%, rgba(47, 125, 255, 0.14), transparent 68%),
    rgba(11, 18, 32, 0.78);
}

.page-faq .faq-final-copy h2 {
  margin: 0;
  font-size: var(--fz-20);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.01em;
}

.page-faq .faq-final-copy p {
  margin: 10px 0 0;
  max-width: 56ch;
  font-size: var(--fz-14);
  line-height: 1.72;
  color: var(--mist);
}

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

.page-faq .faq-related {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}

.page-faq .faq-related-link {
  display: inline-block;
  padding: 6px 0;
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  letter-spacing: 0.02em;
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition:
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .faq-related-link:hover {
  color: var(--white);
  border-bottom-color: var(--orange);
}

.page-faq .faq-related-link:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero-inner {
    padding-top: 52px;
    padding-bottom: 56px;
  }

  .page-faq .faq-final {
    padding: 34px 34px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: center;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 56px;
    padding-bottom: 80px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-group {
    margin-bottom: 56px;
  }

  .page-faq .faq-final {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
    padding: 40px 44px;
  }

  .page-faq .faq-final-actions {
    justify-content: flex-end;
  }

  .page-faq .faq-final-wrap {
    padding-bottom: 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item,
  .page-faq .qa-chev,
  .page-faq .qa-num,
  .page-faq .faq-index-link,
  .page-faq .qa-anchor,
  .page-faq .faq-related-link {
    transition: none;
  }
}
<<<END>>>