.page-faq {
  padding-top: var(--header-h);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: 20px;
}

/* ---------- 页头 ---------- */
.page-faq .faq-hero {
  padding: 20px 0 44px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-faq .faq-hero-copy {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-hero-copy .h1,
.page-faq .faq-hero-copy h1 {
  margin: 0;
}

.page-faq .faq-hero-copy .lead {
  margin: 0;
  max-width: 38ch;
}

.page-faq .faq-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  margin: 8px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero-stats > div {
  display: grid;
  gap: 4px;
}

.page-faq .faq-stat-label {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .faq-stat-num {
  margin: 0;
  color: var(--paper);
  font-size: 26px;
  line-height: 1.1;
  letter-spacing: 0.04em;
}

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

.page-faq .faq-hero-frame {
  aspect-ratio: 8 / 3;
}

.page-faq .faq-hero-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.75) brightness(0.92);
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 28px 0 56px;
  }
  .page-faq .faq-hero-inner {
    grid-template-columns: 7fr 5fr;
    gap: 44px;
    align-items: end;
  }
  .page-faq .faq-hero-copy {
    gap: 20px;
  }
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding: 44px 0 88px;
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: 232px 1fr;
    gap: 60px;
    align-items: start;
    padding-top: 56px;
  }
  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

/* ---------- 侧栏 ---------- */
.page-faq .faq-side {
  display: grid;
  gap: 24px;
  align-content: start;
}

.page-faq .faq-side-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--muted);
}

.page-faq .faq-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line);
}

.page-faq .faq-nav-list a {
  display: block;
  padding: 9px 10px 9px 16px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-faq .faq-nav-list a:hover {
  color: var(--paper);
  background: var(--ink-800);
}

.page-faq .faq-nav-list a[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--yellow);
}

.page-faq .faq-side-note {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-side-note .muted {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
}

/* ---------- 章节 ---------- */
.page-faq .faq-main {
  display: grid;
  gap: 0;
  min-width: 0;
}

.page-faq .faq-sec {
  padding-bottom: 52px;
  margin-bottom: 52px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-sec:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-sec-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 26px;
}

.page-faq .faq-sec-head .h2 {
  margin: 0 0 8px;
}

.page-faq .faq-sec-head .muted {
  margin: 0;
  max-width: 46ch;
}

@media (min-width: 720px) {
  .page-faq .faq-sec-head {
    grid-template-columns: 22px 1fr;
    gap: 22px;
    align-items: start;
  }
}

/* ---------- 高频三问 ---------- */
.page-faq .faq-top-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

@media (min-width: 1024px) {
  .page-faq .faq-top-grid {
    grid-template-columns: 1fr 300px;
    gap: 34px;
    align-items: start;
  }
}

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

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

.page-faq .faq-sync-frame {
  aspect-ratio: 2 / 1;
}

.page-faq .faq-sync-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.8);
}

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

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

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: baseline;
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
  transition: color 160ms var(--ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item > summary::after {
  content: "+";
  align-self: center;
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--muted);
  transition: color 160ms var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
  color: var(--data);
}

.page-faq .faq-item > summary:hover .faq-item-q,
.page-faq .faq-item > summary:focus-visible .faq-item-q {
  color: var(--data);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}

.page-faq .faq-item-num {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--data);
}

.page-faq .faq-item-q {
  color: var(--paper);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  transition: color 160ms var(--ease);
}

.page-faq .faq-item-body {
  padding: 0 0 22px;
  color: var(--text-body);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-item-body p {
  margin: 0;
  max-width: 40ch;
}

.page-faq .faq-item-body a {
  color: var(--data);
  text-decoration: none;
  border-bottom: 1px solid rgba(77, 163, 255, 0.4);
}

.page-faq .faq-item-body a:hover {
  border-bottom-color: var(--data);
}

@media (min-width: 720px) {
  .page-faq .faq-item-body {
    padding-left: 34px;
  }
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-flow li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  align-items: baseline;
}

.page-faq .faq-flow li > .mono {
  color: var(--data);
  font-size: 13px;
  letter-spacing: 0.08em;
}

/* ---------- 四类文档 ---------- */
.page-faq .faq-cats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-faq .faq-cats {
    grid-template-columns: 1fr 1fr;
  }
}

.page-faq .faq-cat {
  display: grid;
  gap: 9px;
  align-content: start;
  padding: 22px 20px 26px;
  background: var(--ink-900);
  transition: background 160ms var(--ease);
}

.page-faq .faq-cat:hover {
  background: var(--ink-800);
}

.page-faq .faq-cat .h4 {
  margin: 0;
}

.page-faq .faq-cat p {
  margin: 0;
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.75;
}

.page-faq .faq-cat-count {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.16em;
}

/* ---------- 新用户阅读顺序 ---------- */
.page-faq .faq-route {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.page-faq .faq-route-item {
  display: grid;
  gap: 7px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-route-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-route-num {
  color: var(--data);
  font-size: 12px;
  letter-spacing: 0.22em;
}

.page-faq .faq-route-item .h4 {
  margin: 0;
}

.page-faq .faq-route-item p {
  margin: 0;
  max-width: 42ch;
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 数据疑问 ---------- */
.page-faq .faq-data-list {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
}

@media (min-width: 860px) {
  .page-faq .faq-data-list {
    grid-template-columns: 1fr 1fr;
    column-gap: 32px;
  }
}

.page-faq .faq-data-list .faq-item:last-child {
  border-bottom: 1px solid var(--line);
}

/* ---------- 人工渠道 ---------- */
.page-faq .faq-human-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 26px;
}

@media (min-width: 720px) {
  .page-faq .faq-human-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.page-faq .faq-human-card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 24px 22px 26px;
  background: var(--ink-900);
}

.page-faq .faq-human-card .eyebrow {
  margin: 0;
}

.page-faq .faq-human-card .muted {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
}

.page-faq .faq-contact {
  margin: 0;
  color: var(--paper);
  font-size: 19px;
  letter-spacing: 0.02em;
  word-break: break-all;
}

.page-faq .faq-human-tips {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-human-tips li {
  position: relative;
  padding: 13px 0 13px 22px;
  border-top: 1px solid var(--line);
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.75;
}

.page-faq .faq-human-tips li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-human-tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--yellow);
}

/* ---------- 尾部指引 ---------- */
.page-faq .faq-tail-link {
  margin: 0;
  padding: 14px 16px;
  border-left: 2px solid var(--ink-600);
  background: var(--ink-800);
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.75;
}

.page-faq .faq-tail-link a {
  color: var(--data);
  text-decoration: none;
  border-bottom: 1px solid rgba(77, 163, 255, 0.4);
}

.page-faq .faq-tail-link a:hover {
  border-bottom-color: var(--data);
}

/* ---------- 显现 ---------- */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

.page-faq [data-reveal][data-revealed="true"] {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-faq .faq-item > summary::after,
  .page-faq .faq-item-q,
  .page-faq .faq-cat,
  .page-faq .faq-nav-list a {
    transition: none;
  }
}

@media (max-width: 719px) {
  .page-faq .faq-hero-stats {
    gap: 12px 22px;
  }
  .page-faq .faq-stat-num {
    font-size: 22px;
  }
  .page-faq .faq-item-q {
    font-size: 16px;
  }
  .page-faq .faq-contact {
    font-size: 16px;
  }
}
</main>