.page-faq {
  --faq-hair: var(--lb-line);
  --faq-idle: #2c554a;
  padding-bottom: clamp(48px, 9vw, 104px);
}

.page-faq a {
  text-decoration: none;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbbar {
  padding-top: clamp(18px, 4vw, 34px);
  padding-bottom: 6px;
}

.page-faq .lb-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--lb-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lb-mist);
}

.page-faq .lb-crumb a {
  color: var(--lb-mist);
  transition: color 0.2s ease;
}

.page-faq .lb-crumb a:hover {
  color: var(--lb-cyan);
}

.page-faq .lb-crumb__sep {
  color: var(--faq-idle);
}

.page-faq .lb-crumb [aria-current="page"] {
  color: var(--lb-cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-bottom: clamp(28px, 5vw, 52px);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(to right, rgba(43, 227, 192, 0.07) 0 1px, transparent 1px 76px),
    repeating-linear-gradient(to bottom, rgba(43, 227, 192, 0.07) 0 1px, transparent 1px 76px);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
}

.page-faq .faq-hero > .lb-wrap {
  position: relative;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 5vw, 44px);
  padding-top: clamp(26px, 5vw, 54px);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 18ch;
  font-size: clamp(32px, 8.6vw, 74px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-weight: 900;
  color: var(--lb-white);
}

.page-faq .faq-hero .lb-lede {
  margin: 20px 0 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.85;
  color: var(--lb-mist);
}

.page-faq .faq-hero__note {
  margin: 16px 0 0;
  max-width: 44ch;
  padding-left: 14px;
  border-left: 2px solid var(--lb-orange);
  font-size: 13px;
  line-height: 1.7;
  color: var(--lb-mist);
}

/* ---------- 步骤快捷索引 ---------- */
.page-faq .faq-jump {
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-jump__title {
  margin: 0;
  padding: 12px 0 10px;
  font-family: var(--lb-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--lb-amber);
}

.page-faq .faq-jump a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-top: 1px solid var(--faq-hair);
  font-size: 14px;
  color: var(--lb-white);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.page-faq .faq-jump a:hover {
  color: var(--lb-cyan);
  padding-left: 6px;
}

.page-faq .faq-jump__num {
  flex: none;
  font-family: var(--lb-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  color: var(--lb-cyan);
}

/* ---------- 步骤流 ---------- */
.page-faq .faq-steps {
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px 14px;
  padding: clamp(26px, 5vw, 40px) 0;
  border-bottom: 1px solid var(--faq-hair);
  scroll-margin-top: 96px;
}

.page-faq .faq-step__idx {
  justify-self: start;
  padding-top: 6px;
  font-family: var(--lb-mono);
  font-size: 24px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--faq-idle);
  transform-origin: left center;
  transition: color 0.35s ease, transform 0.35s ease;
}

.page-faq .faq-step__idx:hover {
  color: var(--lb-cyan-soft);
}

.page-faq .faq-step.is-in .faq-step__idx,
.page-faq .faq-step:target .faq-step__idx {
  color: var(--lb-cyan);
  transform: scale(1.1);
}

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

.page-faq .faq-step__kicker {
  margin: 0 0 8px;
  font-family: var(--lb-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lb-amber);
}

.page-faq .faq-step__title {
  margin: 0 0 14px;
  font-size: clamp(20px, 3.6vw, 30px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--lb-white);
}

.page-faq .faq-step__text {
  margin: 0 0 12px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--lb-mist);
}

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

.page-faq .faq-step__text strong {
  color: var(--lb-white);
  font-weight: 700;
}

.page-faq .faq-step__text a {
  color: var(--lb-cyan);
  border-bottom: 1px solid rgba(43, 227, 192, 0.35);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-step__text a:hover {
  color: var(--lb-cyan-soft);
  border-bottom-color: var(--lb-cyan-soft);
}

/* ---------- 步骤内图文 ---------- */
.page-faq .faq-step__grid {
  display: grid;
  gap: 24px;
}

.page-faq .faq-step__media {
  margin: 0;
  max-width: 250px;
}

.page-faq .faq-step__media .lb-media {
  overflow: hidden;
  border: 1px solid var(--faq-hair);
  border-radius: var(--lb-radius);
  background: var(--lb-turf);
}

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

.page-faq .faq-step__media .lb-media__cap {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--lb-mist);
}

/* ---------- 主题筛选演示 ---------- */
.page-faq .faq-filter {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-filter .lb-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-faq .faq-filter .lb-chip {
  appearance: none;
  padding: 8px 12px;
  font-family: var(--lb-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lb-mist);
  background: transparent;
  border: 1px solid var(--faq-hair);
  border-radius: var(--lb-radius);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-filter .lb-chip:hover {
  color: var(--lb-white);
  border-color: rgba(43, 227, 192, 0.45);
}

.page-faq .faq-filter .lb-chip[aria-pressed="true"] {
  color: var(--lb-night);
  background: var(--lb-cyan);
  border-color: var(--lb-cyan);
}

.page-faq .faq-filter__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-filter__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--faq-hair);
  font-size: 14px;
  color: var(--lb-white);
}

.page-faq .faq-filter__list li[data-hidden] {
  display: none;
}

.page-faq .faq-filter__tag {
  flex: none;
  padding: 3px 7px;
  font-family: var(--lb-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lb-cyan);
  border: 1px solid rgba(43, 227, 192, 0.3);
  border-radius: var(--lb-radius);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-folds {
  margin-top: 20px;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-fold {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-fold__sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 15px 0;
  list-style: none;
  cursor: pointer;
  font-size: clamp(14px, 1.9vw, 16px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--lb-white);
  transition: color 0.2s ease;
}

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

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

.page-faq .faq-fold__sum:hover {
  color: var(--lb-cyan);
}

.page-faq .faq-fold__sum::after {
  content: "+";
  flex: none;
  font-family: var(--lb-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--lb-cyan);
  transition: color 0.2s ease;
}

.page-faq .faq-fold[open] .faq-fold__sum::after {
  content: "−";
}

.page-faq .faq-fold__body {
  padding: 0 0 16px;
}

.page-faq .faq-fold__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--lb-mist);
}

.page-faq .faq-fold__body a {
  color: var(--lb-cyan);
  border-bottom: 1px solid rgba(43, 227, 192, 0.35);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-fold__body a:hover {
  color: var(--lb-cyan-soft);
  border-bottom-color: var(--lb-cyan-soft);
}

/* ---------- 收尾去处 ---------- */
.page-faq .faq-next__title {
  margin: 10px 0 24px;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--lb-white);
}

.page-faq .faq-next {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-next li {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-next a {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  padding: 16px 0;
}

.page-faq .faq-next__num {
  grid-row: 1 / span 2;
  padding-top: 3px;
  font-family: var(--lb-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  color: var(--lb-cyan);
}

.page-faq .faq-next__name {
  font-size: 16px;
  font-weight: 700;
  color: var(--lb-white);
  transition: color 0.2s ease;
}

.page-faq .faq-next__desc {
  grid-column: 2;
  font-size: 13px;
  line-height: 1.7;
  color: var(--lb-mist);
}

.page-faq .faq-next a:hover .faq-next__name {
  color: var(--lb-cyan);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(230px, 300px);
    gap: clamp(40px, 6vw, 72px);
    align-items: end;
  }

  .page-faq .faq-step {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 0 60px;
    padding: clamp(44px, 6vw, 68px) 0;
  }

  .page-faq .faq-step__idx {
    position: sticky;
    top: 100px;
    align-self: start;
    padding-top: 2px;
    font-size: 42px;
  }

  .page-faq .faq-step__grid {
    grid-template-columns: minmax(0, 1fr) clamp(170px, 18vw, 240px);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-step__media {
    max-width: none;
    margin-top: 40px;
  }

  .page-faq .faq-next a {
    grid-template-columns: 56px minmax(0, 1fr);
    padding: 20px 0;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-steps {
    padding-left: 0;
  }
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 600px) {
  .page-faq .faq-hero::before {
    background-image:
      repeating-linear-gradient(to right, rgba(43, 227, 192, 0.07) 0 1px, transparent 1px 44px),
      repeating-linear-gradient(to bottom, rgba(43, 227, 192, 0.07) 0 1px, transparent 1px 44px);
  }

  .page-faq .faq-step {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 8px 12px;
  }

  .page-faq .faq-step__idx {
    font-size: 21px;
  }

  .page-faq .faq-step__media {
    max-width: 100%;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step__idx,
  .page-faq .faq-jump a,
  .page-faq .faq-filter .lb-chip,
  .page-faq .faq-fold__sum,
  .page-faq .faq-fold__sum::after,
  .page-faq .faq-step__text a,
  .page-faq .faq-next__name {
    transition: none;
  }

  .page-faq .faq-step.is-in .faq-step__idx,
  .page-faq .faq-step:target .faq-step__idx {
    transform: none;
  }

  .page-faq .faq-jump a:hover {
    padding-left: 0;
  }
}
<<<END>>>