.page-faq {
  --faq-measure: 680px;
  --faq-rail: 180px;
  --faq-indent: 38px;
  --faq-sticky: 0px;
  color: var(--pearl);
  background: var(--deep-sea);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 42px 0 54px;
  background:
    radial-gradient(120% 82% at 84% 6%, rgba(53, 224, 200, 0.11), transparent 62%),
    radial-gradient(95% 72% at 0% 100%, rgba(201, 162, 39, 0.11), transparent 60%),
    var(--deep-sea);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--dark-gold), var(--neon-teal), var(--warm-orange), transparent);
  opacity: 0.55;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.page-faq .breadcrumb {
  margin-bottom: 20px;
  font-size: 12.5px;
  color: var(--mist);
}

.page-faq .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.28s var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--neon-teal);
}

.page-faq .breadcrumb__sep {
  margin: 0 0.55em;
  color: var(--gold-grey);
}

.page-faq .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--dark-gold);
}

.page-faq h1 {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(30px, 4.6vw + 12px, 58px);
  line-height: 1.22;
  letter-spacing: 0.02em;
  color: var(--pearl);
}

.page-faq .lede {
  margin: 0;
  max-width: 40em;
  font-size: clamp(15.5px, 0.4vw + 14.6px, 17px);
  color: var(--mist);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 9px;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__facts-num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 20px;
  line-height: 1;
  color: var(--dark-gold);
}

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

.page-faq .faq-hero__figure .figure__media {
  overflow: hidden;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(13, 46, 40, 0.92), rgba(6, 26, 40, 0.96));
}

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

.page-faq .figure__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--gold-grey);
}

/* ---------- 分组标签带 ---------- */
.page-faq .faq-tabs {
  position: sticky;
  top: var(--faq-sticky);
  z-index: 20;
  background: rgba(6, 26, 40, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-tabs__inner {
  display: flex;
  gap: 6px;
  padding-top: 10px;
  padding-bottom: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-tab {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 13.5px;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.28s var(--ease), border-color 0.28s var(--ease), background-color 0.28s var(--ease);
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  color: var(--neon-teal);
  border-color: rgba(53, 224, 200, 0.42);
  background: rgba(53, 224, 200, 0.06);
}

.page-faq .faq-tab__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--dark-gold);
}

/* ---------- 分组与问答 ---------- */
.page-faq .faq-body {
  padding-bottom: 60px;
}

.page-faq .faq-group {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  max-width: 900px;
  margin-inline: auto;
  padding: 46px 0 40px;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 74px;
}

.page-faq .faq-group:first-child {
  border-top-color: transparent;
}

.page-faq .faq-group__head {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-group__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(38px, 7vw, 62px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: transparent;
  -webkit-text-stroke: 1px var(--dark-gold);
  text-stroke: 1px var(--dark-gold);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(21px, 1.6vw + 15px, 30px);
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--pearl);
}

.page-faq .faq-group__note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--gold-grey);
}

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

.page-faq .qa {
  position: relative;
  padding-left: 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: transparent;
  transition: background-color 0.34s var(--ease), box-shadow 0.34s var(--ease);
}

.page-faq .qa[open]::before {
  background: var(--neon-teal);
  box-shadow: 0 0 12px rgba(53, 224, 200, 0.5);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 0;
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--pearl);
  cursor: pointer;
  list-style: none;
  transition: color 0.28s var(--ease);
}

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

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

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--mist);
  transition: color 0.28s var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  content: "\2212";
  color: var(--neon-teal);
}

.page-faq .qa__mark {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--dark-gold);
}

.page-faq .qa__a {
  padding: 2px 0 24px var(--faq-indent);
  font-size: 15.5px;
  line-height: 1.92;
  color: var(--mist);
}

.page-faq .qa__a > p {
  margin: 0 0 12px;
}

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

.page-faq .qa__a a {
  color: var(--neon-teal);
  text-decoration: none;
  background-image: linear-gradient(var(--neon-teal), var(--neon-teal));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 1px;
  transition: background-size 0.36s var(--ease), color 0.28s var(--ease);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  background-size: 100% 1px;
}

/* 步骤 */
.page-faq .steps {
  margin: 14px 0 12px;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .steps li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 36px;
  margin-bottom: 12px;
}

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

.page-faq .steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.22em;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--dark-gold);
}

.page-faq .steps li::after {
  content: "";
  position: absolute;
  left: 22px;
  top: 0.86em;
  width: 8px;
  height: 1px;
  background: var(--gold-grey);
}

/* 大类清单 */
.page-faq .cat-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-faq .cat-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .cat-list__name {
  flex: none;
  min-width: 6.2em;
  font-family: var(--font-head);
  font-size: 16px;
  color: var(--pearl);
}

.page-faq .cat-list__desc {
  font-size: 14px;
  color: var(--mist);
}

/* ---------- 中段插图 ---------- */
.page-faq .faq-media {
  max-width: 900px;
  margin-inline: auto;
  padding: 40px 0 6px;
}

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

.page-faq .faq-media__figure .figure__media {
  overflow: hidden;
  aspect-ratio: 5 / 3;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(200deg, rgba(13, 46, 40, 0.9), rgba(3, 12, 21, 0.96));
}

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

/* ---------- 收口 ---------- */
.page-faq .faq-group--end {
  border-top-color: var(--line);
}

.page-faq .faq-end {
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
}

.page-faq .faq-end__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .steps--end {
  margin-top: 16px;
}

.page-faq .faq-end__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .btn--accent {
  background: var(--warm-orange);
  color: var(--midnight);
  border: 1px solid var(--warm-orange);
}

.page-faq .btn--accent:hover,
.page-faq .btn--accent:focus-visible {
  background: transparent;
  color: var(--warm-orange);
}

.page-faq .btn--ghost {
  background: transparent;
  color: var(--pearl);
  border: 1px solid var(--line);
}

.page-faq .btn--ghost:hover,
.page-faq .btn--ghost:focus-visible {
  color: var(--neon-teal);
  border-color: var(--neon-teal);
}

/* ---------- 窄屏 ---------- */
@media (max-width: 639px) {
  .page-faq {
    --faq-indent: 24px;
  }

  .page-faq .faq-hero {
    padding: 30px 0 40px;
  }

  .page-faq .faq-hero__facts {
    gap: 10px 22px;
  }

  .page-faq .faq-group {
    padding: 34px 0 30px;
  }

  .page-faq .qa {
    padding-left: 13px;
  }

  .page-faq .qa__q {
    gap: 10px;
    padding: 15px 0;
    font-size: 15.5px;
  }

  .page-faq .qa__a {
    font-size: 15px;
    line-height: 1.88;
  }

  .page-faq .steps li {
    padding-left: 30px;
  }

  .page-faq .steps li::after {
    left: 20px;
    width: 6px;
  }

  .page-faq .cat-list__name {
    min-width: 0;
  }

  .page-faq .faq-end {
    padding: 20px 16px;
  }

  .page-faq .faq-end__actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

/* ---------- 宽屏 ---------- */
@media (min-width: 880px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    gap: 54px;
  }

  .page-faq .faq-group {
    grid-template-columns: var(--faq-rail) minmax(0, var(--faq-measure));
    gap: 40px;
    max-width: 900px;
  }

  .page-faq .faq-group__head {
    position: sticky;
    top: 84px;
    align-self: start;
  }

  .page-faq .faq-media {
    max-width: 900px;
    padding-left: calc(var(--faq-rail) + 40px);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-group {
    max-width: 940px;
  }

  .page-faq .faq-media {
    max-width: 940px;
  }
}