.page-faq {
  --faq-rule: var(--ink-700);
  --faq-pad: 20px;
}

.page-faq .breadcrumbs {
  padding-top: 24px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 20px 0 8px;
}

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

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

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(34px, 9vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.03em;
  overflow-wrap: break-word;
}

.page-faq .faq-hero .lede {
  margin: 20px 0 0;
  max-width: 46ch;
  color: var(--mist);
  font-size: 17px;
  line-height: 1.8;
}

.page-faq .faq-hero__jump {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-jump {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--brand);
  border-radius: var(--r-m);
  background: var(--ink-800);
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-jump:hover,
.page-faq .faq-jump:focus-visible {
  background: var(--ink-850);
  border-color: var(--brand-soft);
  border-left-color: var(--brand);
}

.page-faq .faq-jump__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--sand);
}

.page-faq .faq-jump__v {
  font-size: 16px;
  font-weight: 700;
  color: var(--snow);
}

.page-faq .faq-hero__media {
  margin: 0;
  border-radius: var(--r-l);
}

/* ---------- 主布局 ---------- */
.page-faq .faq-main {
  padding-top: 40px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
  border-left: 1px solid var(--ink-700);
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 10px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--mist);
  text-decoration: none;
  font-size: 15px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--snow);
  border-left-color: var(--brand);
}

.page-faq .faq-index__num {
  font-size: 20px;
  line-height: 1;
  color: var(--sand);
}

/* ---------- 分组 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 24px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 56px;
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  border-radius: 2px;
  background: var(--brand);
  margin-bottom: 40px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 20px;
}

.page-faq .faq-group__num {
  font-size: 30px;
  line-height: 1;
  color: var(--sand);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--snow);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-item {
  display: block;
  margin-bottom: 12px;
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--ink-700);
  border-radius: var(--r-m);
  background: var(--ink-800);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--ink-700);
  border-left-color: var(--brand-soft);
}

.page-faq .faq-item[open] {
  background: var(--ink-850);
  border-left-color: var(--brand);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--snow);
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 4px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--brand);
  border-radius: 1px;
}

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

.page-faq .faq-item__mark::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
  transform-origin: center;
  transition: transform var(--dur) var(--ease);
}

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

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

.page-faq .faq-item__a {
  padding: 0 20px 20px;
  border-top: 1px solid var(--ink-700);
  margin-top: 2px;
}

.page-faq .faq-item__a p {
  margin: 16px 0 0;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-item__a a {
  color: var(--brand-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 92, 0.4);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--snow);
  border-bottom-color: var(--brand);
}

/* ---------- 检索示意 ---------- */
.page-faq .faq-flow {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px dashed var(--ink-700);
  border-radius: var(--r-s);
}

.page-faq .faq-flow__icon {
  width: 120px;
  height: 60px;
  flex: none;
}

.page-faq .faq-flow__caption {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--sand);
}

/* ---------- 归档配图 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 0;
  border-radius: var(--r-l);
}

/* ---------- 页尾联系条 ---------- */
.page-faq .faq-tail {
  margin-top: 72px;
  padding: 48px 0 64px;
  background: linear-gradient(180deg, rgba(19, 30, 61, 0) 0%, rgba(19, 30, 61, 0.85) 100%);
  border-top: 1px solid var(--ink-700);
}

.page-faq .faq-tail__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.page-faq .faq-tail h2 {
  margin: 0;
  font-size: clamp(24px, 6vw, 38px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--snow);
}

.page-faq .faq-tail__text {
  margin: 14px 0 0;
  max-width: 44ch;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-tail__meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-tail__meta li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ink-700);
}

.page-faq .faq-tail__key {
  flex: none;
  width: 48px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--sand);
}

.page-faq .faq-tail__val {
  color: var(--snow);
  font-size: 15px;
  overflow-wrap: anywhere;
}

.page-faq .faq-tail .btn {
  justify-self: start;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__jump {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-tail__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
  }

  .page-faq .faq-tail .btn {
    grid-column: 1 / -1;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    padding: 36px 0 16px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
  }

  .page-faq .faq-main {
    padding-top: 64px;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 64px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 40px;
    align-self: start;
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 72px;
  }

  .page-faq .faq-item__q {
    font-size: 18px;
    padding: 20px 24px;
  }

  .page-faq .faq-item__a {
    padding: 0 24px 22px;
  }
}

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