.page-faq {
  --faq-gap: clamp(28px, 5vw, 64px);
  background: var(--c-bg);
  color: var(--c-white);
}

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

.page-faq .crumbs a {
  color: var(--c-slate);
  text-decoration: none;
}

.page-faq .crumbs a:hover {
  color: var(--c-cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 28px;
  padding: clamp(24px, 4vw, 48px) 0 clamp(28px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
  position: relative;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(180px, 30%);
  height: 2px;
  background: var(--c-cyan);
}

.page-faq .faq-hero__main .display-1 {
  margin: 14px 0 18px;
  font-size: clamp(1.9rem, 5.2vw, 3.6rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-faq .faq-hero__main .lede {
  max-width: 46ch;
  color: var(--c-slate);
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  line-height: 1.75;
  margin: 0;
}

.page-faq .faq-quick {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-quick li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 0.94rem;
  color: var(--c-white);
}

.page-faq .faq-quick__no {
  font-size: 0.72rem;
  color: var(--c-steal);
  letter-spacing: 0.08em;
}

.page-faq .faq-hero__meta {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--c-slate);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  padding: clamp(32px, 5vw, 64px) 0 clamp(48px, 8vw, 96px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  align-self: start;
}

.page-faq .faq-index__cap {
  color: var(--c-slate);
  margin: 0 0 14px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 4px 12px 0;
  color: var(--c-white);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--c-cyan);
  transform: translateX(4px);
}

.page-faq .faq-index__no {
  font-size: 0.72rem;
  color: var(--c-cyan);
  letter-spacing: 0.06em;
}

.page-faq .faq-index__foot {
  margin-top: 22px;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--line);
  padding-top: 8px;
  margin-bottom: 34px;
}

.page-faq .faq-item details {
  display: block;
}

.page-faq .faq-item__sum {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
}

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

.page-faq .faq-item__sum:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 4px;
}

.page-faq .faq-item__no {
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  color: var(--c-steal);
  letter-spacing: 0.02em;
  line-height: 1;
}

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

.page-faq .faq-item__title {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 3vw, 1.85rem);
  line-height: 1.3;
  color: var(--c-white);
  letter-spacing: -0.01em;
}

.page-faq .faq-item__lead {
  display: block;
  margin-top: 6px;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--c-slate);
}

.page-faq .faq-item__sign {
  position: relative;
  width: 18px;
  height: 18px;
  flex: none;
  margin-top: 8px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--c-cyan);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  top: 0;
  left: 8px;
  width: 2px;
  height: 18px;
}

.page-faq .faq-item details[open] .faq-item__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-item__panel {
  padding: 6px 0 8px;
  animation: faqFade 0.28s var(--ease) both;
}

@keyframes faqFade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.page-faq .faq-item__panel .h3 {
  margin: 0 0 12px;
  font-size: 1.02rem;
  font-family: var(--font-cond);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-cyan);
}

.page-faq .faq-item__panel p {
  margin: 0 0 16px;
  line-height: 1.78;
  font-size: 0.96rem;
  color: var(--c-white);
  max-width: 62ch;
}

.page-faq .faq-item__more {
  font-size: 0.9rem !important;
  color: var(--c-slate) !important;
}

.page-faq .faq-item__more a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 步骤 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: baseline;
  background: var(--c-bg-2);
  padding: 14px 16px;
}

.page-faq .step__no {
  font-size: 1rem;
  color: var(--c-cyan);
  letter-spacing: 0.04em;
  line-height: 1.4;
}

.page-faq .step__text {
  margin: 0 !important;
  font-size: 0.95rem !important;
  line-height: 1.6 !important;
}

/* ---------- 检查清单 ---------- */
.page-faq .checklist {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .checklist__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  background: var(--c-bg-2);
  border-left: 2px solid var(--line-cyan);
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--c-white);
}

.page-faq .checklist__box {
  width: 14px;
  height: 14px;
  margin-top: 4px;
  border: 1px solid var(--c-cyan);
  display: block;
  position: relative;
}

.page-faq .checklist__box::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--c-cyan-soft);
  opacity: 0.55;
}

/* ---------- 提示块 ---------- */
.page-faq .tip {
  padding: 18px 20px;
  margin: 0 0 22px;
  border-left: 3px solid var(--c-ink);
}

.page-faq .tip p {
  margin: 0 !important;
  color: var(--c-ink) !important;
  font-size: 0.9rem !important;
  line-height: 1.72 !important;
}

.page-faq .tip__cap {
  font-family: var(--font-cond);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 8px !important;
  font-size: 0.82rem !important;
  text-transform: none;
}

.page-faq .tip--paper {
  background: var(--c-paper);
  border-left-color: var(--c-steal);
}

/* ---------- 平板横竖屏说明 ---------- */
.page-faq .split-notes {
  display: grid;
  gap: 14px;
  margin: 0 0 22px;
}

.page-faq .split-notes__item {
  background: var(--c-bg-2);
  border-top: 2px solid var(--c-cyan);
  padding: 16px 18px;
}

.page-faq .split-notes__item p {
  margin: 10px 0 0 !important;
  font-size: 0.9rem !important;
  color: var(--c-slate) !important;
}

/* ---------- 数据说明 ---------- */
.page-faq .data-notes {
  display: grid;
  gap: 14px;
  margin: 0 0 22px;
}

.page-faq .data-note {
  background: var(--c-bg-3);
  padding: 18px;
  border-left: 2px solid var(--c-steal);
}

.page-faq .data-note__cap {
  margin: 0 0 8px;
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--c-cyan);
  text-transform: uppercase;
}

.page-faq .data-note__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-white);
}

.page-faq .data-note p:last-child {
  margin: 0 !important;
  font-size: 0.9rem !important;
  color: var(--c-slate) !important;
}

/* ---------- 联系渠道 ---------- */
.page-faq .contact-routes {
  display: grid;
  gap: 1px;
  margin: 0 0 22px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .contact-route {
  background: var(--c-bg-2);
  padding: 14px 18px;
  display: grid;
  gap: 6px;
}

.page-faq .contact-route__cap {
  color: var(--c-slate);
  margin: 0;
}

.page-faq .contact-route__val {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.6;
  color: var(--c-white);
}

/* ---------- 图 ---------- */
.page-faq .figure {
  margin: 0 0 22px;
}

.page-faq .figure__cap {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--c-slate);
  line-height: 1.6;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 24px;
    border-top: none;
  }

  .page-faq .faq-index__item {
    border-top: 1px solid var(--line);
    border-bottom: none;
  }

  .page-faq .faq-index__item:nth-last-child(-n + 1) {
    border-bottom: 1px solid var(--line);
  }

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

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

  .page-faq .data-notes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 64px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: 1fr;
  }

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

  .page-faq .faq-index__item:first-child {
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-item__sum {
    grid-template-columns: 72px 1fr auto;
    gap: 24px;
  }

  .page-faq .faq-body {
    max-width: 860px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__panel {
    animation: none;
  }

  .page-faq .faq-index__link {
    transition: none;
  }
}