.page-faq {
  --faq-panel: #0E2620;
  --faq-panel-hi: #102A23;
  --faq-gap: clamp(18px, 2.6vw, 34px);
  display: block;
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  max-width: var(--lb-shell);
  margin: 0 auto;
  padding: clamp(20px, 3vw, 32px) var(--lb-gutter) 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}
.page-faq .faq-crumb__link {
  color: var(--lb-mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--lb-ease), border-color 0.2s var(--lb-ease);
}
.page-faq .faq-crumb__link:hover,
.page-faq .faq-crumb__link:focus-visible {
  color: var(--lb-orange);
  border-bottom-color: var(--lb-orange);
}
.page-faq .faq-crumb__sep {
  color: var(--lb-line);
}
.page-faq .faq-crumb__now {
  color: var(--lb-warm);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  max-width: var(--lb-shell);
  margin: 0 auto;
  padding: clamp(26px, 4.5vw, 60px) var(--lb-gutter) clamp(30px, 4.5vw, 64px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-faq .faq-hero__main::before {
  content: "";
  display: block;
  width: 68px;
  height: 5px;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--lb-orange), var(--lb-orange-soft));
  clip-path: polygon(0 0, 100% 0, calc(100% - 7px) 100%, 0 100%);
}

.page-faq .faq-hero .lb-display {
  margin: 0 0 clamp(14px, 2vw, 22px);
  color: var(--lb-warm);
  max-width: 18ch;
}

.page-faq .faq-hero .lb-lead {
  margin: 0;
  max-width: 46ch;
  color: var(--lb-mist);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: 1.85;
}

.page-faq .faq-hero__vnote {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  padding-left: 12px;
  border-left: 1px solid var(--lb-line);
  font-family: var(--lb-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--lb-mist);
}

.page-faq .faq-hero__actions {
  margin-top: clamp(20px, 3vw, 30px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__side {
  position: relative;
}
.page-faq .faq-hero__side-note {
  display: none;
}
.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--lb-line);
  background: var(--lb-ink-deep);
}
.page-faq .faq-hero__figure .lb-figure__media {
  overflow: hidden;
}
.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.62) contrast(1.12);
}
.page-faq .faq-hero__figure .lb-figure__caption {
  display: block;
  padding: 10px 12px 12px;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--lb-mist);
  border-top: 1px solid var(--lb-line);
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.45fr) minmax(240px, 0.55fr);
    gap: clamp(40px, 6vw, 92px);
  }
  .page-faq .faq-hero__side {
    padding-right: 34px;
  }
  .page-faq .faq-hero__side-note {
    display: block;
    position: absolute;
    right: 0;
    top: 4px;
    margin: 0;
    writing-mode: vertical-rl;
    font-family: var(--lb-font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.24em;
    color: var(--lb-line);
  }
}

/* ---------- 快速检索 ---------- */
.page-faq .faq-quick {
  max-width: var(--lb-shell);
  margin: 0 auto;
  padding: 0 var(--lb-gutter) clamp(34px, 5vw, 60px);
}
.page-faq .faq-quick__title {
  margin: 0 0 14px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--lb-warm);
}
.page-faq .faq-quick__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--lb-line);
  border: 1px solid var(--lb-line);
}
.page-faq .faq-quick__item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 16px 18px;
  background: var(--lb-ink-deep);
  border-top: 2px solid transparent;
  text-decoration: none;
  color: var(--lb-warm);
  transition: border-color 0.2s var(--lb-ease), background-color 0.2s var(--lb-ease);
}
.page-faq .faq-quick__item:hover,
.page-faq .faq-quick__item:focus-visible {
  background: var(--faq-panel-hi);
  border-top-color: var(--lb-orange);
}
.page-faq .faq-quick__no {
  font-family: var(--lb-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--lb-mist);
}
.page-faq .faq-quick__item:hover .faq-quick__no,
.page-faq .faq-quick__item:focus-visible .faq-quick__no {
  color: var(--lb-cyan);
}
.page-faq .faq-quick__txt {
  font-size: 0.92rem;
  line-height: 1.5;
}

@media (min-width: 620px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1080px) {
  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

/* ---------- 问答组 ---------- */
.page-faq .faq-groups {
  max-width: var(--lb-shell);
  margin: 0 auto;
  padding: 0 var(--lb-gutter) clamp(40px, 6vw, 80px);
}
.page-faq .faq-groups .lb-section__head {
  margin-bottom: clamp(8px, 1.6vw, 18px);
}
.page-faq .faq-groups .lb-section__title {
  color: var(--lb-warm);
}

.page-faq .faq-item {
  position: relative;
  margin-top: var(--faq-gap);
}
.page-faq .faq-list > .faq-item:first-child {
  margin-top: 0;
}
.page-faq .faq-item + .faq-item::before {
  content: "";
  position: absolute;
  top: calc(var(--faq-gap) / -2);
  left: 0;
  width: 52px;
  height: 1px;
  background: var(--lb-line);
  transform: translateY(-50%);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2vw, 22px);
  min-height: 46px;
  padding: 4px 0 2px;
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item__summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item__index {
  flex: 0 0 auto;
  font-family: var(--lb-font-mono);
  font-size: clamp(0.9rem, 1.6vw, 1.1rem);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--lb-mist);
  transition: color 0.2s var(--lb-ease);
}
.page-faq .faq-item[open] .faq-item__index {
  color: var(--lb-orange);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  font-size: clamp(1.02rem, 2.1vw, 1.45rem);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--lb-warm);
  transition: color 0.2s var(--lb-ease);
}
.page-faq .faq-item__summary:hover .faq-item__q,
.page-faq .faq-item__summary:focus-visible .faq-item__q {
  color: var(--lb-orange-soft);
}

.page-faq .faq-item__arrow {
  flex: 0 0 auto;
  align-self: center;
  width: 10px;
  height: 10px;
  border-right: 1px solid var(--lb-mist);
  border-bottom: 1px solid var(--lb-mist);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.22s var(--lb-ease), border-color 0.2s var(--lb-ease);
}
.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(-135deg) translate(-2px, -2px);
  border-color: var(--lb-cyan);
}

.page-faq .faq-item__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 30px);
  padding: clamp(16px, 2.4vw, 26px) 0 clamp(6px, 1.6vw, 14px);
}

@media (min-width: 840px) {
  .page-faq .faq-item__body {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    column-gap: clamp(32px, 5vw, 76px);
    padding-left: clamp(30px, 3.6vw, 54px);
  }
}

/* 排查步骤 */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  counter-reset: faqstep;
}
.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 10px;
  width: 1px;
  background: var(--lb-line);
}
.page-faq .faq-steps li {
  position: relative;
  counter-increment: faqstep;
  padding: 0 0 16px 28px;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--lb-warm);
}
.page-faq .faq-steps li:last-child {
  padding-bottom: 0;
}
.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 13px;
  text-align: center;
  font-family: var(--lb-font-mono);
  font-size: 0.68rem;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--lb-mist);
  background: var(--lb-ink);
}
.page-faq .faq-item__figure + .faq-steps {
  margin-top: 4px;
}

/* 口径说明 */
.page-faq .faq-caliber {
  padding: clamp(16px, 2.2vw, 22px) clamp(16px, 2.2vw, 24px);
  background: var(--faq-panel);
  border: 1px solid var(--lb-line);
  border-left: 2px solid var(--lb-cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}
.page-faq .faq-caliber__title {
  margin: 0 0 10px;
  font-family: var(--lb-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--lb-cyan);
}
.page-faq .faq-caliber p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.9;
  color: var(--lb-mist);
}
.page-faq .faq-term {
  color: var(--lb-cyan);
  border-bottom: 1px solid rgba(47, 230, 208, 0.35);
}

/* 组内配图 */
.page-faq .faq-item__figure {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  grid-column: 1 / -1;
  border: 1px solid var(--lb-line);
  background: var(--lb-ink-deep);
}
.page-faq .faq-item__figure .lb-figure__media {
  overflow: hidden;
}
.page-faq .faq-item__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.58) contrast(1.15);
}
.page-faq .faq-item__figure .lb-figure__caption {
  display: block;
  padding: 9px 12px 11px;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--lb-mist);
  border-top: 1px solid var(--lb-line);
}

/* ---------- 尾部延伸 ---------- */
.page-faq .faq-next {
  max-width: var(--lb-shell);
  margin: 0 auto;
  padding: 0 var(--lb-gutter) clamp(56px, 8vw, 104px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--lb-line);
  padding-top: clamp(24px, 3.5vw, 40px);
}
.page-faq .faq-next__text {
  margin: 0;
  max-width: 52ch;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--lb-mist);
}
.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
</main>