.page-faq {
  background:
    radial-gradient(900px 420px at 84% -8%, rgba(255, 107, 44, 0.16), transparent 62%),
    radial-gradient(760px 400px at 2% 6%, rgba(45, 226, 230, 0.12), transparent 60%),
    var(--bg-abyss);
  color: var(--cloud-white);
  padding-bottom: 64px;
  overflow-x: clip;
}

.page-faq .breadcrumbs {
  padding-top: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

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

.page-faq .breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fog-blue);
}

.page-faq .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: rgba(141, 162, 184, 0.45);
}

.page-faq .breadcrumb-item a {
  color: var(--electric);
  text-decoration: none;
}

.page-faq .breadcrumb-item a:hover,
.page-faq .breadcrumb-item a:focus-visible {
  text-decoration: underline;
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: 26px;
  padding: 26px 0 34px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 16px;
  font-size: clamp(1.95rem, 5vw, 3rem);
  line-height: 1.14;
  letter-spacing: 0.035em;
  font-weight: 800;
  color: var(--cloud-white);
}

.page-faq .faq-hero h1 em {
  font-style: normal;
  color: var(--lava);
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 48ch;
  color: var(--fog-blue);
  font-size: 16px;
  line-height: 1.85;
}

.page-faq .faq-hero-visual {
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: rgba(19, 43, 58, 0.55);
  backdrop-filter: blur(10px);
}

.page-faq .faq-visual-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--electric);
}

.page-faq .season-strip {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-visual-note {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog-blue);
}

/* 数字速查 */
.page-faq .faq-quick {
  padding: 42px 0 6px;
}

.page-faq .quick-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  margin-bottom: 20px;
}

.page-faq .quick-head .section-heading {
  margin: 0;
  font-size: clamp(1.15rem, 2.8vw, 1.45rem);
  letter-spacing: 0.03em;
}

.page-faq .quick-head-note {
  margin: 0;
  font-size: 13px;
  color: var(--fog-blue);
}

.page-faq .quick-layout {
  display: grid;
  gap: 20px;
}

.page-faq .quick-cards {
  display: grid;
  gap: 12px;
}

.page-faq .quick-card {
  position: relative;
  padding: 18px 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: linear-gradient(158deg, rgba(19, 43, 58, 0.85), rgba(13, 27, 46, 0.94));
  overflow: hidden;
}

.page-faq .quick-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--lava), rgba(255, 107, 44, 0));
}

.page-faq .quick-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1.05;
  color: var(--lava);
}

.page-faq .quick-unit {
  margin: 2px 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fog-blue);
}

.page-faq .quick-label {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--cloud-white);
}

.page-faq .quick-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--fog-blue);
}

.page-faq .quick-figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  overflow: hidden;
}

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

.page-faq .media-caption {
  padding: 12px 16px 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--fog-blue);
  border-top: 1px solid var(--line-soft);
}

/* 问答主区 */
.page-faq .qa-layout {
  display: grid;
  gap: 26px;
  padding-top: 36px;
}

.page-faq .qa-index {
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: rgba(19, 43, 58, 0.55);
  backdrop-filter: blur(10px);
}

.page-faq .qa-index-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--electric);
}

.page-faq .qa-index-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .qa-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid rgba(141, 162, 184, 0.22);
  border-radius: var(--radius-pill);
  color: var(--cloud-white);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.page-faq .qa-chip .mono-index {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--lava);
}

.page-faq .qa-chip:hover,
.page-faq .qa-chip:focus-visible {
  border-color: var(--line-strong);
  background: rgba(45, 226, 230, 0.1);
  color: var(--electric);
}

.page-faq .qa-chip:hover .mono-index,
.page-faq .qa-chip:focus-visible .mono-index {
  color: var(--electric);
}

.page-faq .qa-index-foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  line-height: 1.7;
  color: var(--fog-blue);
}

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

.page-faq .qa-group {
  padding-bottom: 18px;
  scroll-margin-top: 96px;
}

.page-faq .qa-group + .qa-group {
  margin-top: 26px;
  padding-top: 26px;
  border-top: 1px solid var(--line-soft);
}

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

.page-faq .qa-group-head .mono-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--lava);
}

.page-faq .qa-group-head h2 {
  margin: 0;
  font-size: clamp(1.1rem, 2.6vw, 1.4rem);
  letter-spacing: 0.03em;
  color: var(--cloud-white);
}

.page-faq .qa-figure {
  margin: 0 0 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--bg-panel);
  overflow: hidden;
}

.page-faq .qa-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* 手风琴 */
.page-faq .qa-item {
  margin-bottom: 10px;
  border: 1px solid rgba(141, 162, 184, 0.16);
  border-radius: var(--radius-md);
  background: rgba(13, 27, 46, 0.78);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-faq .qa-item[open] {
  border-color: rgba(45, 226, 230, 0.34);
  background: rgba(19, 43, 58, 0.86);
}

.page-faq .qa-item summary {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 42px 16px 16px;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .qa-item summary::after {
  content: "";
  position: absolute;
  top: 22px;
  right: 18px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--electric);
  border-bottom: 2px solid var(--electric);
  transform: rotate(45deg);
  transition: transform 0.22s ease;
}

.page-faq .qa-item[open] summary::after {
  transform: rotate(225deg);
}

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

.page-faq .qa-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lava);
}

.page-faq .qa-q {
  font-size: 15px;
  line-height: 1.6;
  font-weight: 600;
  color: var(--cloud-white);
}

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

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

.page-faq .qa-a p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--fog-blue);
}

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

.page-faq .qa-a a {
  color: var(--electric);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 226, 230, 0.4);
}

.page-faq .qa-a a:hover,
.page-faq .qa-a a:focus-visible {
  color: var(--cloud-white);
  border-bottom-color: var(--lava);
}

.page-faq .qa-mono {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cloud-white);
  word-break: break-all;
}

.page-faq .qa-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.page-faq .qa-tags .tag {
  padding: 3px 9px;
  border: 1px solid rgba(141, 162, 184, 0.24);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fog-blue);
}

/* 返回顶部 */
.page-faq .faq-top {
  display: flex;
  justify-content: flex-end;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: rgba(19, 43, 58, 0.7);
  color: var(--electric);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq .to-top:hover,
.page-faq .to-top:focus-visible {
  background: rgba(45, 226, 230, 0.14);
  border-color: var(--electric);
  color: var(--cloud-white);
}

.page-faq .to-top-icon {
  font-size: 14px;
  line-height: 1;
}

@media (min-width: 560px) {
  .page-faq .quick-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .qa-index-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .qa-q {
    font-size: 16px;
  }

  .page-faq .qa-a {
    padding-left: 42px;
  }
}

@media (min-width: 920px) {
  .page-faq {
    padding-bottom: 88px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
    gap: 56px;
    padding: 46px 0 50px;
  }

  .page-faq .faq-lede {
    font-size: 17px;
  }

  .page-faq .quick-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.62fr);
    align-items: start;
    gap: 28px;
  }

  .page-faq .qa-layout {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
    gap: 52px;
    padding-top: 54px;
  }

  .page-faq .qa-index {
    position: sticky;
    top: 96px;
    padding: 18px;
  }

  .page-faq .qa-index-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .qa-chip {
    padding: 10px 14px;
    font-size: 14px;
  }

  .page-faq .qa-figure {
    max-width: 460px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item summary::after,
  .page-faq .qa-chip,
  .page-faq .to-top {
    transition: none;
  }
}
<<<END>>>