.page-faq {
  --faq-index-w: 264px;
  --faq-tone: var(--xb-signal);
  position: relative;
  background: var(--xb-ink);
  color: var(--xb-paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--xb-header-h) + 42px) 0 40px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(102, 117, 111, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 117, 111, .07) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 78%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 78%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: -8%;
  width: 52%;
  height: 132%;
  background: linear-gradient(158deg, rgba(53, 242, 192, .16), rgba(53, 242, 192, 0) 68%);
  transform: skewX(-13deg);
  pointer-events: none;
}

.page-faq .faq-hero > .xb-shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .xb-breadcrumb {
  margin-bottom: 34px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-faq .faq-hero__title {
  margin: 12px 0 18px;
  font-family: var(--xb-font-display);
  font-size: clamp(44px, 11vw, 92px);
  font-weight: 700;
  line-height: .94;
  letter-spacing: -.01em;
  color: var(--xb-paper);
}

.page-faq .faq-hero__intro {
  max-width: 62ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(243, 240, 231, .78);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--xb-line-soft);
  border-top: 1px solid var(--xb-line);
  border-bottom: 1px solid var(--xb-line);
}

.page-faq .faq-hero__fact {
  padding: 14px 16px;
  background: var(--xb-ink);
}

.page-faq .faq-hero__fact dt {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--xb-stone);
}

.page-faq .faq-hero__fact dd {
  margin: 6px 0 0;
  font-family: var(--xb-font-display);
  font-size: clamp(26px, 5vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--xb-signal);
  font-variant-numeric: tabular-nums;
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  padding-bottom: 72px;
}

/* ---------- 左侧索引 ---------- */

.page-faq .faq-index {
  min-width: 0;
  border-top: 1px solid var(--xb-line);
  border-bottom: 1px solid var(--xb-line);
  padding-bottom: 18px;
}

.page-faq .faq-index__head {
  margin: 16px 0 14px;
  font-family: var(--xb-font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--xb-mist);
}

.page-faq .faq-index__groupname {
  margin: 18px 0 8px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--xb-stone);
}

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

.page-faq .faq-index__link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 7px 10px 7px 10px;
  border-left: 2px solid transparent;
  color: rgba(243, 240, 231, .72);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color .2s var(--xb-ease), border-color .2s var(--xb-ease), background .2s var(--xb-ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--xb-paper);
  border-left-color: var(--xb-stone);
  background: rgba(53, 242, 192, .06);
}

.page-faq .faq-index__link[aria-current="true"] {
  color: var(--xb-signal);
  border-left-color: var(--xb-signal);
  background: linear-gradient(90deg, rgba(53, 242, 192, .14), rgba(53, 242, 192, 0) 84%);
}

.page-faq .faq-index__no {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--xb-stone);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-index__link[aria-current="true"] .faq-index__no {
  color: var(--xb-mist);
}

/* ---------- 右侧内容流 ---------- */

.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: clamp(44px, 7vw, 76px);
  min-width: 0;
}

.page-faq .faq-topic {
  --faq-tone: var(--xb-signal);
  position: relative;
  padding-top: 6px;
}

.page-faq .faq-topic--t2 { --faq-tone: var(--xb-mist); }
.page-faq .faq-topic--t3 { --faq-tone: var(--xb-link); }
.page-faq .faq-topic--t4 { --faq-tone: var(--xb-red); }
.page-faq .faq-topic--t5 { --faq-tone: var(--xb-gold); }
.page-faq .faq-topic--t6 { --faq-tone: var(--xb-mist); }
.page-faq .faq-topic--t7 { --faq-tone: var(--xb-signal); }

.page-faq .faq-topic__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--xb-line);
  margin-bottom: 4px;
}

.page-faq .faq-topic__head::after {
  content: "";
  flex: 0 0 auto;
  width: 42px;
  height: 3px;
  margin-bottom: 4px;
  background: var(--faq-tone);
}

.page-faq .faq-topic__no {
  flex: 0 0 auto;
  font-family: var(--xb-font-display);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--faq-tone);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-topic__title {
  margin: 0;
  font-family: var(--xb-font-display);
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--xb-paper);
}

/* 单条问答 */

.page-faq .faq-item {
  position: relative;
  padding: 28px 0 28px 20px;
  border-bottom: 1px solid var(--xb-line-soft);
  scroll-margin-top: calc(var(--xb-header-h) + 28px);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 30px;
  width: 3px;
  height: 22px;
  background: var(--faq-tone);
  opacity: .35;
  transition: height .28s var(--xb-ease), opacity .28s var(--xb-ease);
}

.page-faq .faq-item[aria-current="true"]::before {
  height: 52px;
  opacity: 1;
}

.page-faq .faq-item__q {
  display: flex;
  gap: 12px;
  align-items: baseline;
  margin: 0 0 14px;
  font-size: clamp(18px, 2.6vw, 21px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--xb-paper);
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--faq-tone);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-item__a {
  max-width: 68ch;
}

.page-faq .faq-item__a p {
  margin: 0 0 12px;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(243, 240, 231, .76);
}

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

.page-faq .faq-item__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
}

.page-faq .faq-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--xb-line);
  border-radius: 999px;
  color: var(--xb-link);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color .2s var(--xb-ease), color .2s var(--xb-ease), background .2s var(--xb-ease);
}

.page-faq .faq-pill:hover,
.page-faq .faq-pill:focus-visible {
  border-color: var(--xb-signal);
  color: var(--xb-signal);
  background: rgba(53, 242, 192, .08);
}

/* 插图 */

.page-faq .faq-figure {
  position: relative;
  margin: 26px 0 6px;
  border: 1px solid var(--xb-line-soft);
  background: var(--xb-panel);
  overflow: hidden;
}

.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, rgba(53, 242, 192, .05) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}

.page-faq .faq-figure__cap {
  padding: 12px 16px;
  border-top: 1px solid var(--xb-line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--xb-stone);
}

/* 结尾区块 */

.page-faq .faq-item--end {
  border-bottom: none;
  padding-bottom: 8px;
}

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

/* 底部横幅 */

.page-faq .faq-banner {
  position: relative;
  margin: 0;
  border-top: 1px solid var(--xb-line);
  overflow: hidden;
  background: var(--xb-void);
}

.page-faq .faq-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 12, 10, .82) 0%, rgba(5, 12, 10, .18) 52%, rgba(5, 12, 10, .7) 100%),
    repeating-linear-gradient(0deg, rgba(53, 242, 192, .05) 0 1px, transparent 1px 30px);
  pointer-events: none;
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 8 / 3;
}

/* ---------- 中等屏 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-index__links {
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 2px 18px;
  }
}

/* ---------- 桌面双栏 ---------- */

@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding-top: calc(var(--xb-header-h) + 62px);
    padding-bottom: 58px;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 60px;
    align-items: start;
    padding-bottom: 96px;
  }

  .page-faq .faq-index {
    border-top: none;
    border-bottom: none;
    padding-bottom: 0;
  }

  .page-faq .faq-index__inner {
    position: sticky;
    top: calc(var(--xb-header-h) + 22px);
    max-height: calc(100vh - var(--xb-header-h) - 52px);
    overflow-y: auto;
    padding-right: 10px;
    scrollbar-width: thin;
    scrollbar-color: var(--xb-stone) transparent;
  }

  .page-faq .faq-index__inner::-webkit-scrollbar {
    width: 4px;
  }

  .page-faq .faq-index__inner::-webkit-scrollbar-thumb {
    background: var(--xb-line);
  }

  .page-faq .faq-index__links {
    grid-template-columns: minmax(0, 1fr);
    gap: 1px;
  }

  .page-faq .faq-item {
    padding-left: 26px;
  }
}

/* ---------- 大屏 ---------- */

@media (min-width: 1320px) {
  .page-faq {
    --faq-index-w: 296px;
  }

  .page-faq .faq-body {
    gap: 76px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item::before,
  .page-faq .faq-pill {
    transition: none;
  }
}