.page-faq {
  --faq-flow-w: 168px;
  --faq-step-dot: 31px;
  --faq-indent: 62px;

  font-family: var(--bs-font-body);
  color: var(--bs-ink);
  background: var(--bs-paper);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--bs-ink);
  color: var(--bs-paper);
  padding: calc(var(--bs-header-h) + 40px) 0 56px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(0, 168, 232, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 168, 232, 0.14) 1px, transparent 1px);
  background-size: 80px 80px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), rgba(0, 0, 0, 0.2) 72%, transparent);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), rgba(0, 0, 0, 0.2) 72%, transparent);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -140px;
  right: -100px;
  width: 440px;
  height: 440px;
  z-index: -1;
  background: radial-gradient(circle, rgba(0, 168, 232, 0.34), transparent 68%);
  pointer-events: none;
}

.page-faq .bs-breadcrumb {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.58);
}

.page-faq .bs-breadcrumb a {
  color: var(--bs-ice-light);
  text-decoration: none;
}

.page-faq .bs-breadcrumb a:hover {
  color: var(--bs-paper);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 26px 0 0;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--bs-lime);
}

.page-faq .faq-hero__eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--bs-lime);
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  max-width: 18ch;
  color: var(--bs-paper);
  font-family: var(--bs-font-display);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.06;
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.78);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 36px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--bs-hair-dark);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 18px;
}

.page-faq .faq-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-hero__fact strong {
  font-family: var(--bs-font-mono);
  font-size: 26px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--bs-lime);
}

.page-faq .faq-hero__fact span {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.6);
}

@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: calc(var(--bs-header-h) + 64px) 0 80px;
  }
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }
  .page-faq .faq-hero__fact strong {
    font-size: 32px;
  }
}

/* ---------- 流程概览 ---------- */
.page-faq .faq-overview {
  background: var(--bs-cloud);
  border-bottom: 1px solid var(--bs-hair);
  padding: 44px 0 48px;
}

.page-faq .faq-overview__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-overview__figure {
  margin: 0;
}

.page-faq .faq-overview__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--bs-hair);
  background: linear-gradient(140deg, #0b1a24, #123244 60%, #0a141c);
  object-fit: cover;
}

.page-faq .faq-overview__figure figcaption {
  margin-top: 10px;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--bs-graphite);
}

.page-faq .faq-overview__title {
  margin: 0;
  font-family: var(--bs-font-display);
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--bs-ink);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  counter-reset: faq-step;
}

.page-faq .faq-steps li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--bs-hair);
  font-size: 15px;
  color: var(--bs-graphite);
}

.page-faq .faq-steps li:first-child {
  border-top: 1px solid var(--bs-hair);
}

.page-faq .faq-steps .bs-mono {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--bs-ice-deep);
}

@media (min-width: 960px) {
  .page-faq .faq-overview {
    padding: 56px 0 60px;
  }
  .page-faq .faq-overview__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 48px;
    align-items: center;
  }
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-main {
  background: var(--bs-paper);
  padding: 44px 0 72px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

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

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

@media (min-width: 900px) {
  .page-faq .faq-main {
    padding: 64px 0 96px;
  }
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-flow-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
  .page-faq .faq-flow {
    display: block;
    position: sticky;
    top: calc(var(--bs-header-h) + 32px);
    align-self: start;
  }
}

/* ---------- 左侧流程指示线 ---------- */
.page-faq .faq-flow__title {
  margin: 0 0 14px;
  font-family: var(--bs-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--bs-graphite);
}

.page-faq .faq-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-faq .faq-flow__list::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 18px;
  bottom: 18px;
  width: 1px;
  background: var(--bs-hair-strong);
}

.page-faq .faq-flow__item {
  position: relative;
}

.page-faq .faq-flow__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  text-decoration: none;
  color: var(--bs-graphite);
  font-size: 13px;
  line-height: 1.3;
  transition: color 160ms var(--bs-ease);
}

.page-faq .faq-flow__num {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  width: var(--faq-step-dot);
  height: var(--faq-step-dot);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--bs-hair-strong);
  background: var(--bs-paper);
  font-family: var(--bs-font-mono);
  font-size: 11px;
  color: var(--bs-graphite);
  transition: background-color 160ms var(--bs-ease), border-color 160ms var(--bs-ease), color 160ms var(--bs-ease);
}

.page-faq .faq-flow__link:hover,
.page-faq .faq-flow__link:focus-visible {
  color: var(--bs-ink);
}

.page-faq .faq-flow__link:hover .faq-flow__num,
.page-faq .faq-flow__link:focus-visible .faq-flow__num {
  border-color: var(--bs-ice);
  color: var(--bs-ice-deep);
  background: var(--bs-ice-mist);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: 52px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--bs-ink);
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  padding: 4px 8px;
  background: var(--bs-lime);
  color: var(--bs-ink);
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--bs-font-display);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--bs-ink);
}

.page-faq .faq-group__count {
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--bs-graphite);
  white-space: nowrap;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--bs-hair);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 44px 16px 14px;
  cursor: pointer;
  list-style: none;
  border-left: 2px solid transparent;
  background: transparent;
  transition: background-color 160ms var(--bs-ease), border-color 160ms var(--bs-ease);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  background: var(--bs-ice-mist);
  border-left-color: var(--bs-ice);
}

.page-faq .faq-item[open] > .faq-item__q {
  background: var(--bs-ice-mist);
  border-left-color: var(--bs-ice);
}

.page-faq .faq-item__q::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 24px;
  width: 10px;
  height: 10px;
  border-right: 1.5px solid var(--bs-ice-deep);
  border-bottom: 1.5px solid var(--bs-ice-deep);
  transform: rotate(45deg);
  transition: transform 200ms var(--bs-ease);
}

.page-faq .faq-item[open] > .faq-item__q::after {
  transform: rotate(-135deg);
}

.page-faq .faq-item__id {
  flex: 0 0 36px;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--bs-ice-deep);
}

.page-faq .faq-item__text {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--bs-ink);
}

.page-faq .faq-item__a {
  padding: 2px 44px 24px var(--faq-indent);
  font-size: 15px;
  line-height: 1.8;
  color: var(--bs-graphite);
}

.page-faq .faq-item__a p {
  margin: 0 0 0.9em;
}

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

.page-faq .faq-item__a ul {
  margin: 0 0 0.9em;
  padding-left: 1.1em;
}

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

.page-faq .faq-item__a li {
  margin-bottom: 0.4em;
}

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

.page-faq .faq-item__a a {
  color: var(--bs-ice-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 160ms var(--bs-ease);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--bs-ice);
}

.page-faq .faq-mono {
  font-family: var(--bs-font-mono);
  font-size: 0.9em;
  padding: 1px 5px;
  background: var(--bs-cloud);
  color: var(--bs-ink);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* ---------- 答案中的数值清单 ---------- */
.page-faq .faq-stats {
  list-style: none;
  margin: 12px 0 14px;
  padding: 0;
  border-left: 2px solid var(--bs-ice);
  background: var(--bs-ice-mist);
}

.page-faq .faq-item__a .faq-stats li {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 7px 12px;
  margin: 0;
  font-size: 13px;
  border-bottom: 1px solid rgba(0, 103, 154, 0.14);
}

.page-faq .faq-item__a .faq-stats li:last-child {
  border-bottom: 0;
}

.page-faq .faq-stats__k {
  color: var(--bs-graphite);
}

.page-faq .faq-stats__v {
  flex: 0 0 auto;
  font-family: var(--bs-font-mono);
  color: var(--bs-ice-deep);
  white-space: nowrap;
}

/* ---------- 组内插图 ---------- */
.page-faq .faq-inline-figure {
  margin: 26px 0 6px;
  padding: 14px;
  border: 1px solid var(--bs-hair);
  background: var(--bs-cloud);
}

.page-faq .faq-inline-figure img {
  display: block;
  width: 100%;
  max-width: 520px;
  height: auto;
  margin: 0 auto;
  object-fit: cover;
}

.page-faq .faq-inline-figure figcaption {
  margin-top: 10px;
  text-align: center;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  color: var(--bs-graphite);
}

/* ---------- 结尾行动区 ---------- */
.page-faq .faq-cta {
  background: var(--bs-ink);
  border-top: 3px solid var(--bs-ice);
  color: var(--bs-paper);
  padding: 52px 0 56px;
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: 26px;
}

.page-faq .faq-cta__label {
  margin: 0 0 12px;
  font-family: var(--bs-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--bs-lime);
}

.page-faq .faq-cta__title {
  margin: 0;
  font-family: var(--bs-font-display);
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--bs-paper);
}

.page-faq .faq-cta__desc {
  margin: 16px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.72);
}

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

.page-faq .faq-cta .bs-btn--solid {
  background: var(--bs-lime);
  border-color: var(--bs-lime);
  color: var(--bs-ink);
}

.page-faq .faq-cta .bs-btn--solid:hover,
.page-faq .faq-cta .bs-btn--solid:focus-visible {
  background: var(--bs-lime-deep);
  border-color: var(--bs-lime-deep);
}

.page-faq .faq-cta .bs-btn--ghost {
  color: var(--bs-paper);
  border-color: rgba(255, 255, 255, 0.42);
}

.page-faq .faq-cta .bs-btn--ghost:hover,
.page-faq .faq-cta .bs-btn--ghost:focus-visible {
  color: var(--bs-ice-light);
  border-color: var(--bs-ice);
}

@media (min-width: 860px) {
  .page-faq .faq-cta {
    padding: 68px 0 72px;
  }
  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 48px;
  }
}

/* ---------- 窄屏适配 ---------- */
@media (max-width: 599px) {
  .page-faq .faq-hero {
    padding: calc(var(--bs-header-h) + 30px) 0 44px;
  }
  .page-faq .faq-hero__title {
    max-width: 100%;
  }
  .page-faq .faq-hero__lede {
    font-size: 15px;
  }
  .page-faq .faq-main {
    padding: 36px 0 60px;
  }
  .page-faq .faq-group + .faq-group {
    margin-top: 40px;
  }
  .page-faq .faq-item__id {
    flex-basis: 30px;
    font-size: 11px;
  }
  .page-faq .faq-item__q {
    padding: 15px 38px 15px 12px;
  }
  .page-faq .faq-item__text {
    font-size: 15px;
  }
  .page-faq .faq-item__q::after {
    right: 14px;
    top: 22px;
  }
  .page-faq .faq-item__a {
    padding: 2px 16px 20px 16px;
  }
  .page-faq .faq-inline-figure {
    padding: 10px;
  }
  .page-faq .faq-cta {
    padding: 44px 0 48px;
  }
  .page-faq .faq-hero__facts {
    gap: 16px 14px;
  }
  .page-faq .faq-hero__fact strong {
    font-size: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .faq-flow__num,
  .page-faq .faq-flow__link,
  .page-faq .faq-item__a a {
    transition: none;
  }
}