.page-faq {
  display: block;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 40px 0 34px;
  border-bottom: var(--edge);
  background:
    repeating-linear-gradient(to right, rgba(23, 23, 20, .075) 0 1px, transparent 1px 46px),
    var(--paper);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(27px, 7.2vw, 46px);
  line-height: 1.18;
  letter-spacing: -.012em;
  max-width: 17em;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 38em;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero__chip {
  padding: 6px 11px;
  border: 2px solid var(--ink);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .02em;
  white-space: nowrap;
}

.page-faq .faq-hero__chip--gold {
  background: var(--gold);
  color: var(--paper);
  border-color: var(--ink);
}

.page-faq .faq-hero__chip--verdigris {
  background: var(--verdigris);
  color: var(--paper);
  border-color: var(--ink);
}

.page-faq .faq-hero__chip--cinnabar {
  background: var(--paper);
  color: var(--cinnabar);
  border-color: var(--cinnabar);
}

/* ---------- 12 步总览 ---------- */
.page-faq .faq-overview {
  background: var(--sand);
  border-bottom: var(--edge);
  padding: 40px 0 44px;
}

.page-faq .faq-overview__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-overview__intro {
  margin: 14px 0 22px;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .step-bus {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 7px;
}

.page-faq .step-bus__item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 9px;
  border: 2px solid var(--ink);
  background: var(--paper);
  font-size: 13px;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .step-bus__num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--gold);
  flex: none;
  padding-top: 1px;
}

.page-faq .faq-overview__foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--shale);
}

.page-faq .faq-overview__foot a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

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

.page-faq .faq-overview__figure .figure__frame {
  border: var(--edge);
  box-shadow: var(--push);
  overflow: hidden;
  background: var(--paper);
}

.page-faq .faq-overview__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.82);
}

.page-faq .faq-overview__figure .figure__cap {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--shale);
}

/* ---------- 分步说明 ---------- */
.page-faq .faq-steps {
  padding: 42px 0 48px;
  background: var(--paper);
  border-bottom: var(--edge);
}

.page-faq .faq-steps__intro {
  margin: 12px 0 26px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--shale);
}

.page-faq .faq-steps__layout {
  display: grid;
  gap: 20px;
}

.page-faq .step-rail {
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  padding: 10px 0;
}

.page-faq .step-rail__label {
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--shale);
}

.page-faq .step-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .step-rail__link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 38px;
  padding: 0 6px;
  border: 2px solid var(--ink);
  background: var(--paper);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  transition: background-color .14s var(--ease), color .14s var(--ease);
}

.page-faq .step-rail__link:hover,
.page-faq .step-rail__link:focus-visible {
  background: var(--gold);
  color: var(--paper);
  outline: none;
}

.page-faq .step-cards {
  min-width: 0;
}

.page-faq .step-card {
  border: var(--edge);
  background: var(--paper);
  box-shadow: var(--push);
  margin-bottom: 14px;
}

.page-faq .step-card__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--serif);
  font-weight: 700;
}

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

.page-faq .step-card__head:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: -3px;
}

.page-faq .step-card__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.page-faq .step-card[open] .step-card__head::after {
  content: "–";
}

.page-faq .step-card__num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
  flex: none;
}

.page-faq .step-card__title {
  font-size: 16.5px;
  line-height: 1.4;
  letter-spacing: .01em;
}

.page-faq .step-card__body {
  padding: 0 14px 15px;
  border-top: 1px dashed rgba(23, 23, 20, .28);
  margin-top: 2px;
}

.page-faq .step-card__body p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
  max-width: 40em;
}

.page-faq .step-card__note {
  padding: 8px 10px 8px 12px;
  border-left: 3px solid var(--cinnabar);
  background: rgba(179, 59, 46, .07);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink);
}

.page-faq .step-card__link {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
  padding-bottom: 2px;
  transition: color .14s var(--ease);
}

.page-faq .step-card__link:hover,
.page-faq .step-card__link:focus-visible {
  color: var(--gold);
  outline: none;
}

/* ---------- 故障排查 ---------- */
.page-faq .faq-trouble {
  padding: 44px 0 46px;
  background: var(--blue);
  color: var(--paper);
  border-bottom: var(--edge);
}

.page-faq .faq-trouble__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-trouble__title {
  color: var(--paper);
}

.page-faq .faq-trouble__intro {
  margin: 14px 0 24px;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sand);
}

.page-faq .trouble-path {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .trouble-step {
  position: relative;
  padding: 14px 16px 16px;
  border-left: 4px solid var(--gold);
  background: rgba(245, 241, 232, .07);
}

.page-faq .trouble-step__num {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-faq .trouble-step__title {
  margin: 6px 0 0;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .trouble-step p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: #D8D5CB;
  max-width: 34em;
}

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

.page-faq .faq-trouble__figure .figure__frame {
  border: 2px solid var(--gold);
  overflow: hidden;
  background: var(--deep);
}

.page-faq .faq-trouble__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.7);
}

.page-faq .faq-trouble__figure .figure__cap {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sand);
}

/* ---------- 常见问题 ---------- */
.page-faq .faq-qa {
  padding: 42px 0 44px;
  background: var(--paper);
  border-bottom: var(--edge);
}

.page-faq .faq-qa__intro {
  margin: 12px 0 24px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--shale);
}

.page-faq .faq-qa__grid {
  display: grid;
  gap: 12px;
}

.page-faq .qa-item {
  border: 2px solid var(--ink);
  background: var(--paper);
  padding: 0 14px 14px;
}

.page-faq .qa-item__q {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 -14px;
  padding: 13px 14px 12px;
  cursor: pointer;
  list-style: none;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

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

.page-faq .qa-item__q:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: -3px;
}

.page-faq .qa-item__q::before {
  content: "Q";
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--cinnabar);
  letter-spacing: .04em;
}

.page-faq .qa-item__a {
  border-top: 1px dashed rgba(23, 23, 20, .28);
  padding-top: 2px;
}

.page-faq .qa-item__a p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink);
  max-width: 40em;
}

.page-faq .faq-qa__foot {
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--shale);
}

.page-faq .faq-qa__foot a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--verdigris);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-support {
  padding: 42px 0 52px;
  background: var(--sand);
}

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

.page-faq .faq-support__intro {
  margin: 14px 0 22px;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .support-card {
  border: var(--edge);
  background: var(--paper);
  box-shadow: var(--push);
  padding: 18px 16px 16px;
}

.page-faq .support-card__list {
  margin: 0;
  padding: 0;
}

.page-faq .support-card__row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(23, 23, 20, .3);
}

.page-faq .support-card__row:first-child {
  padding-top: 0;
}

.page-faq .support-card__row:last-of-type {
  border-bottom: none;
}

.page-faq .support-card__row dt {
  flex: none;
  min-width: 5em;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--shale);
  padding-top: 2px;
}

.page-faq .support-card__value {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  font-weight: 600;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .support-card__value:first-of-type {
  color: var(--blue);
}

.page-faq .support-card__note {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-left: 3px solid var(--verdigris);
  background: rgba(63, 126, 114, .08);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .step-bus {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-qa__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 56px 0 46px;
  }

  .page-faq .faq-overview {
    padding: 52px 0 58px;
  }

  .page-faq .faq-overview__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
    gap: 38px;
  }

  .page-faq .faq-steps {
    padding: 56px 0 60px;
  }

  .page-faq .faq-steps__layout {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 34px;
  }

  .page-faq .step-rail {
    position: sticky;
    top: 82px;
    align-self: start;
    border-top: none;
    border-bottom: none;
    border-left: 2px solid var(--ink);
    padding: 2px 0 2px 12px;
  }

  .page-faq .step-rail__list {
    flex-direction: column;
    overflow: visible;
    gap: 5px;
    padding-bottom: 0;
  }

  .page-faq .step-rail__link {
    min-width: 0;
    width: 44px;
    height: 34px;
  }

  .page-faq .faq-trouble {
    padding: 58px 0 60px;
  }

  .page-faq .faq-trouble__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
    gap: 40px;
  }

  .page-faq .faq-trouble__figure {
    position: sticky;
    top: 82px;
  }

  .page-faq .faq-qa {
    padding: 56px 0 58px;
  }

  .page-faq .faq-support {
    padding: 56px 0 64px;
  }

  .page-faq .faq-support__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 40px;
  }

  .page-faq .support-card {
    padding: 22px 22px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-rail__link,
  .page-faq .step-card__link {
    transition: none;
  }
}