.page-faq {
  --faq-line: rgba(18, 38, 58, .12);
  --faq-line-strong: rgba(18, 38, 58, .26);
  --faq-brass-soft: rgba(200, 150, 62, .13);
  --faq-ink-soft: rgba(18, 38, 58, .82);
  background: var(--mist);
  color: var(--ink);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 8vw, 88px);
  overflow-x: hidden;
}

.page-faq .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--topbar-h) + 22px) 0 clamp(34px, 7vw, 62px);
  background:
    radial-gradient(circle at 84% 12%, rgba(47, 212, 194, .16), transparent 46%),
    radial-gradient(circle at 10% 92%, rgba(46, 111, 142, .34), transparent 52%),
    linear-gradient(158deg, var(--indigo) 0%, #0f2033 58%, var(--ink) 100%);
  border-bottom: 1px solid var(--line-brass);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(118deg, transparent 0 24px, rgba(201, 214, 216, .05) 24px 25px),
    repeating-linear-gradient(-118deg, transparent 0 38px, rgba(201, 214, 216, .035) 38px 39px);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__crumb .breadcrumb__link,
.page-faq .faq-hero__crumb .breadcrumb__current,
.page-faq .faq-hero__crumb .breadcrumb__sep {
  color: rgba(244, 247, 248, .66);
  font-size: 12.5px;
  letter-spacing: .04em;
}

.page-faq .faq-hero__crumb .breadcrumb__link:hover {
  color: var(--aqua);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
  margin-top: clamp(18px, 4vw, 34px);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--brass);
  font-weight: 700;
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 6.4vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--warm);
}

.page-faq .faq-hero__intro {
  margin: 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(244, 247, 248, .82);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  border-top: 1px solid var(--line-brass);
}

.page-faq .faq-hero__stats li {
  flex: 1 1 0;
  min-width: 0;
  padding: 14px 6px 2px;
  border-right: 1px solid var(--line-soft);
}

.page-faq .faq-hero__stats li:last-child {
  border-right: 0;
}

.page-faq .faq-stat__num {
  display: block;
  font-size: clamp(1.5rem, 5vw, 2.1rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--brass);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 4px;
  font-size: 11.5px;
  letter-spacing: .06em;
  color: rgba(244, 247, 248, .66);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 28px;
  padding-top: clamp(28px, 5vw, 54px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  background: var(--warm);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-organic);
  padding: 16px 14px;
  box-shadow: 0 1px 0 rgba(18, 38, 58, .04);
}

.page-faq .faq-index__cap {
  margin: 0 0 12px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--faq-line);
  font-size: 11px;
  letter-spacing: .18em;
  font-weight: 700;
  color: var(--grey);
}

.page-faq .faq-index__group {
  margin-bottom: 14px;
}

.page-faq .faq-index__group:last-of-type {
  margin-bottom: 8px;
}

.page-faq .faq-index__group-title {
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-size: 13px;
  font-weight: 700;
  color: var(--indigo);
  text-decoration: none;
  margin-bottom: 7px;
  line-height: 1.5;
  transition: color .18s ease;
}

.page-faq .faq-index__group-title .mono {
  color: var(--brass);
  font-size: 12px;
}

.page-faq .faq-index__group-title:hover,
.page-faq .faq-index__group-title.is-current {
  color: var(--red);
}

.page-faq .faq-index__nums {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.page-faq .faq-index__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 27px;
  height: 24px;
  padding: 0 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--silver-blue);
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--faq-line);
  border-radius: 4px;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}

.page-faq .faq-index__num:hover,
.page-faq .faq-index__num:focus-visible {
  background: var(--silver-blue);
  border-color: var(--silver-blue);
  color: var(--warm);
}

.page-faq .faq-index__note {
  margin: 10px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--faq-line);
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--grey);
}

/* ---------- 分组 ---------- */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: clamp(34px, 6vw, 60px);
  scroll-margin-top: calc(var(--topbar-h) + 24px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 14px;
  padding-bottom: 12px;
  margin-bottom: 4px;
  border-bottom: 2px solid var(--indigo);
}

.page-faq .faq-group__index {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.4vw, 2rem);
  line-height: 1;
  color: var(--brass);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.2rem, 3.4vw, 1.65rem);
  line-height: 1.3;
  color: var(--indigo);
  letter-spacing: -.01em;
}

.page-faq .faq-group__desc {
  grid-column: 1 / -1;
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--grey);
}

.page-faq .faq-inline-link {
  color: var(--silver-blue);
  text-decoration: none;
  border-bottom: 1px solid var(--line-brass);
  padding-bottom: 1px;
}

.page-faq .faq-inline-link:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 8px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-organic);
  background: var(--silver-blue);
}

.page-faq .faq-figure figcaption {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--grey);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line);
  scroll-margin-top: calc(var(--topbar-h) + 24px);
  transition: background .2s ease;
}

.page-faq .faq-item:target {
  background: var(--faq-brass-soft);
  box-shadow: inset 3px 0 0 var(--brass);
}

.page-faq .faq-item__head {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 16px;
  align-items: center;
  gap: 10px;
  padding: 15px 8px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__head:hover .faq-item__q {
  color: var(--silver-blue);
}

.page-faq .faq-item__num {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--brass);
  letter-spacing: .02em;
}

.page-faq .faq-item__q {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--indigo);
  transition: color .18s ease;
}

.page-faq .faq-item__mark {
  position: relative;
  width: 12px;
  height: 12px;
  justify-self: end;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--grey);
  border-radius: 1px;
  transition: transform .2s ease, opacity .2s ease, background .2s ease;
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 5px;
  width: 12px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 5px;
  top: 0;
  width: 2px;
  height: 12px;
}

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

.page-faq .faq-item[open] .faq-item__mark::before {
  background: var(--red);
}

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

.page-faq .faq-item__body {
  padding: 0 8px 18px 48px;
  border-left: 2px solid var(--faq-brass-soft);
  margin-left: 8px;
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.88;
  color: var(--faq-ink-soft);
}

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

/* ---------- 结尾提示 ---------- */
.page-faq .faq-tail {
  margin-top: clamp(16px, 3vw, 30px);
  padding: clamp(22px, 4vw, 34px);
  background: linear-gradient(135deg, var(--indigo) 0%, #16304a 100%);
  border-radius: var(--radius-organic);
  border-left: 4px solid var(--brass);
}

.page-faq .faq-tail__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 3vw, 1.35rem);
  color: var(--warm);
  line-height: 1.4;
}

.page-faq .faq-tail__text {
  margin: 0 0 18px;
  max-width: 52ch;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(244, 247, 248, .78);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero__stats {
    max-width: 420px;
  }

  .page-faq .faq-item__q {
    font-size: 15.5px;
  }

  .page-faq .faq-item__body {
    padding-left: 56px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .8fr);
    align-items: end;
    gap: 48px;
  }

  .page-faq .faq-hero__stats {
    max-width: none;
  }

  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 60px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--topbar-h) + 20px);
    max-height: calc(100vh - var(--topbar-h) - 44px);
    overflow-y: auto;
  }

  .page-faq .faq-figure {
    margin: 22px 0 10px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-body {
    grid-template-columns: 258px minmax(0, 1fr);
  }

  .page-faq .faq-item__head {
    padding: 17px 10px;
  }

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

@media (max-width: 479px) {
  .page-faq .faq-hero__stats li {
    padding-left: 2px;
    padding-right: 2px;
  }

  .page-faq .faq-item__body {
    padding-left: 8px;
    margin-left: 0;
    border-left: 0;
  }

  .page-faq .faq-item__head {
    grid-template-columns: 26px minmax(0, 1fr) 14px;
    gap: 8px;
    padding: 14px 4px;
  }

  .page-faq .faq-item__q {
    font-size: 14.5px;
  }
}
<<<END>>>