.page-faq {
  --faq-border: 1.5px solid var(--ink);
  --faq-hair: 1px solid rgba(17, 22, 28, 0.16);
  --faq-ink-soft: rgba(17, 22, 28, 0.74);
  display: block;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 页首 ---------- */
.page-faq .faq-mast {
  padding: 22px 0 30px;
  border-bottom: var(--faq-border);
  background:
    linear-gradient(180deg, rgba(95, 168, 188, 0.10), rgba(95, 168, 188, 0) 72%),
    var(--paper);
}

.page-faq .faq-mast .breadcrumb {
  font-size: 13px;
  color: var(--stone);
  margin-bottom: 4px;
}

.page-faq .faq-mast .breadcrumb a {
  color: var(--cyan-deep);
  text-decoration: none;
}

.page-faq .faq-mast .breadcrumb a:hover,
.page-faq .faq-mast .breadcrumb a:focus-visible {
  text-decoration: underline;
}

.page-faq .faq-mast__k {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-deep);
  margin: 16px 0 10px;
}

.page-faq .faq-mast__t {
  font-family: var(--serif);
  font-size: clamp(1.7rem, 5.6vw, 2.85rem);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
  max-width: 22ch;
}

.page-faq .faq-mast__d {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
  max-width: 64ch;
  margin: 0 0 20px;
}

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

.page-faq .faq-jump a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 13px;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--cyan-deep);
  border: 1px solid rgba(30, 90, 107, 0.34);
  background: rgba(95, 168, 188, 0.08);
  transition: background var(--ease), border-color var(--ease), color var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  background: var(--cyan);
  border-color: var(--ink);
  color: var(--ink);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-sec {
  padding: 42px 0;
  border-bottom: var(--faq-hair);
}

.page-faq .faq-sec--sand {
  background: var(--sand);
}

.page-faq .faq-ch {
  display: block;
}

.page-faq .faq-ch__num {
  display: block;
  font-family: var(--mono);
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
  margin-bottom: 10px;
}

.page-faq .faq-ch__k {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-deep);
  margin: 0 0 8px;
}

.page-faq .faq-ch__t {
  font-family: var(--serif);
  font-size: clamp(1.28rem, 3.6vw, 1.8rem);
  font-weight: 700;
  line-height: 1.36;
  margin: 0 0 12px;
}

.page-faq .faq-ch__d {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
  max-width: 62ch;
  margin: 0 0 22px;
}

/* ---------- 问答折叠组 ---------- */
.page-faq .faq-list {
  margin: 0;
  padding: 0;
}

.page-faq .faq-item {
  position: relative;
  border: var(--faq-border);
  background: transparent;
  margin-bottom: 10px;
  transition: background var(--ease), border-color var(--ease);
}

.page-faq .faq-item[open] {
  background: var(--sand);
}

.page-faq .faq-sec--sand .faq-item[open] {
  background: var(--paper);
}

.page-faq .faq-item::after {
  content: "";
  position: absolute;
  left: -1.5px;
  bottom: -1.5px;
  width: 15px;
  height: 15px;
  background: var(--ink);
  clip-path: polygon(0 0, 0 100%, 100% 100%);
  opacity: 0;
  transition: opacity var(--ease);
  pointer-events: none;
}

.page-faq .faq-item[open]::after {
  opacity: 1;
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  list-style: none;
  padding: 16px 18px;
  transition: color var(--ease);
}

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

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

.page-faq .faq-item__q:hover .faq-item__t,
.page-faq .faq-item__q:focus-visible .faq-item__t {
  color: var(--cyan-deep);
}

.page-faq .faq-item__t {
  flex: 1 1 auto;
  font-size: 0.98rem;
  font-weight: 500;
  line-height: 1.6;
  transition: color var(--ease);
}

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: var(--faq-border);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--ink);
  transition: opacity var(--ease), transform var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 50%;
  top: 3px;
  bottom: 3px;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-faq .faq-item__mark::after {
  top: 50%;
  left: 3px;
  right: 3px;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-item[open] .faq-item__mark {
  border-color: var(--signal);
}

.page-faq .faq-item[open] .faq-item__mark::before {
  opacity: 0;
  transform: translateX(-50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  background: var(--signal);
}

.page-faq .faq-item__a {
  padding: 0 18px 18px;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 66ch;
}

/* ---------- 三步检索 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-faq .faq-step {
  position: relative;
  border: var(--faq-border);
  background: var(--paper);
  padding: 22px 20px 20px;
}

.page-faq .faq-step__n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--cyan-deep);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.page-faq .faq-step__t {
  font-family: var(--serif);
  font-size: 1.14rem;
  font-weight: 700;
  margin: 0 0 8px;
}

.page-faq .faq-step__d {
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--faq-ink-soft);
  margin: 0;
}

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

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

.page-faq .faq-fig .media-frame__cap {
  font-size: 12px;
  color: var(--stone);
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact-sec {
  background: var(--night);
  color: var(--paper);
  padding: 46px 0;
}

.page-faq .faq-contact-sec .faq-ch__k {
  color: var(--cyan);
}

.page-faq .faq-contact-sec .faq-ch__t {
  color: var(--paper);
  margin-bottom: 14px;
}

.page-faq .faq-contact-sec .faq-ch__d {
  color: rgba(247, 245, 240, 0.78);
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(247, 245, 240, 0.24);
}

.page-faq .faq-contact__lb {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-contact__vl {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--paper);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__note {
  font-size: 0.88rem;
  line-height: 1.75;
  color: rgba(247, 245, 240, 0.66);
  margin: 0 0 20px;
  max-width: 58ch;
}

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

.page-faq .faq-fig--contact {
  margin-top: 26px;
}

/* ---------- 平板及桌面 ---------- */
@media (min-width: 860px) {
  .page-faq .faq-mast {
    padding: 34px 0 44px;
  }

  .page-faq .faq-sec {
    padding: 66px 0;
  }

  .page-faq .faq-ch {
    display: grid;
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 0 32px;
    align-items: start;
  }

  .page-faq .faq-ch__num {
    font-size: 70px;
    margin-bottom: 0;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
  }

  .page-faq .faq-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 46px;
    right: -22px;
    width: 13px;
    height: 13px;
    border-top: 2px solid var(--cyan);
    border-right: 2px solid var(--cyan);
    transform: rotate(45deg);
  }

  .page-faq .faq-contact-sec {
    padding: 74px 0;
  }

  .page-faq .faq-contact {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 400px);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-fig--contact {
    margin-top: 0;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-ch {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 0 44px;
  }

  .page-faq .faq-item__q {
    padding: 18px 22px;
  }

  .page-faq .faq-item__a {
    padding: 0 22px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item::after,
  .page-faq .faq-item__q,
  .page-faq .faq-item__t,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-jump a {
    transition: none;
  }
}