.page-faq {
  --faq-rail-w: 236px;
  --faq-sticky: 84px;
  color: var(--body);
  padding-bottom: 72px;
}

.page-faq .faq-crumb {
  padding-top: 18px;
  padding-bottom: 2px;
  font-size: 13px;
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  display: grid;
  gap: 22px;
  padding-top: 22px;
  padding-bottom: 4px;
}

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

.page-faq .faq-title {
  margin: 10px 0 0;
  font-family: var(--font-cond);
  font-size: clamp(42px, 10vw, 78px);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: 0.01em;
  color: var(--frost);
}

.page-faq .faq-lede {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  max-width: 62ch;
}

.page-faq .faq-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-faq .faq-stats > li {
  padding: 14px 14px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ink-1);
  min-height: 92px;
}

.page-faq .faq-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 500;
  line-height: 1.1;
  color: var(--frost);
  letter-spacing: -0.01em;
}

.page-faq .faq-stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--gray);
}

.page-faq .faq-banner {
  margin: 0;
  border: 1px solid var(--line);
  clip-path: var(--cut);
  overflow: hidden;
  background: var(--ink-1);
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 440;
  object-fit: cover;
}

/* ===== 高频提问 ===== */
.page-faq .faq-hot {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hot-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--gray);
}

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

.page-faq .faq-hot-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  background: var(--ink-1);
  color: var(--body);
  font-size: 14px;
  line-height: 1.3;
  text-decoration: none;
  clip-path: var(--cut-sm);
  transition: color 0.12s var(--ease), border-color 0.12s var(--ease), background 0.12s var(--ease);
}

.page-faq .faq-hot-list a:hover,
.page-faq .faq-hot-list a:focus-visible {
  color: var(--frost);
  border-color: var(--cyan);
  background: var(--ink-2);
}

.page-faq .faq-hot-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

/* ===== 主体两栏 ===== */
.page-faq .faq-body {
  display: grid;
  gap: 22px;
  align-items: start;
  padding-top: 28px;
}

.page-faq .faq-rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gray);
}

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

.page-faq .faq-rail-list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 12px;
  border-left: 2px solid var(--line);
  background: var(--ink-1);
  color: var(--body);
  font-size: 14px;
  line-height: 1.3;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.12s var(--ease), border-color 0.12s var(--ease), background 0.12s var(--ease);
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  color: var(--frost);
  border-left-color: var(--cyan);
  background: var(--ink-2);
}

.page-faq .faq-rail-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
}

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

/* ===== 检索条 ===== */
.page-faq .faq-searchbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  margin-bottom: 28px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: var(--ink-1);
}

.page-faq .faq-search {
  flex: 1 1 240px;
  min-width: 0;
  display: block;
}

.page-faq .faq-search-input {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  background: var(--ink-0);
  border: 1px solid var(--line);
  color: var(--frost);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.4;
  outline: none;
  transition: border-color 0.12s var(--ease);
}

.page-faq .faq-search-input::placeholder {
  color: var(--gray);
}

.page-faq .faq-search-input:hover,
.page-faq .faq-search-input:focus {
  border-color: var(--cyan);
}

.page-faq .faq-count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-empty {
  flex: 1 1 100%;
  margin: 0;
  padding: 8px 0 2px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--orange);
}

.page-faq .faq-empty[hidden] {
  display: none;
}

/* ===== 分类与问题条目 ===== */
.page-faq .faq-cat {
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .faq-cat + .faq-cat {
  margin-top: 42px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-cat-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 12px;
  row-gap: 4px;
  margin: 0 0 16px;
}

.page-faq .faq-cat-idx {
  grid-row: 1 / 3;
  padding-top: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.page-faq .faq-cat-title {
  margin: 0;
  font-family: var(--font-cond);
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--frost);
}

.page-faq .faq-cat-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--gray);
  max-width: 60ch;
}

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

.page-faq .faq-item {
  background: var(--ink-1);
  border-left: 3px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-item:hover {
  background: var(--ink-2);
}

.page-faq .faq-item[open] {
  background: var(--ink-2);
  border-left-color: var(--cyan);
}

.page-faq .faq-sum {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 18px;
  gap: 10px;
  align-items: start;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  white-space: nowrap;
}

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

.page-faq .faq-qtext {
  display: block;
  font-family: var(--font-cond);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--frost);
}

.page-faq .faq-preview {
  display: block;
  margin-top: 4px;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
}

.page-faq .faq-item[open] .faq-preview {
  display: none;
}

.page-faq .faq-mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 4px;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--gray);
  transition: transform 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .faq-mark::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 1.5px;
}

.page-faq .faq-mark::after {
  left: 8px;
  top: 0;
  width: 1.5px;
  height: 18px;
}

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

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

.page-faq .faq-a {
  padding: 0 16px 18px 66px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body);
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 68ch;
}

.page-faq .faq-a p + p {
  margin-top: 8px;
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-deep);
  transition: color 0.12s var(--ease), border-color 0.12s var(--ease);
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  color: var(--frost);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-key {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.95em;
  color: var(--cyan);
}

/* ===== 反馈路径图 ===== */
.page-faq .faq-figure {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  background: var(--ink-1);
  clip-path: var(--cut);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 560;
  object-fit: cover;
}

.page-faq .faq-figure-cap {
  padding: 11px 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
}

/* ===== 尾部导航 ===== */
.page-faq .faq-nav {
  margin-top: 52px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-nav-title {
  margin: 0 0 16px;
  font-family: var(--font-cond);
  font-size: clamp(20px, 4.5vw, 26px);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--frost);
}

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

.page-faq .faq-nav-list a {
  display: block;
  padding: 16px 18px;
  background: var(--ink-1);
  text-decoration: none;
  transition: background 0.12s var(--ease), box-shadow 0.12s var(--ease);
}

.page-faq .faq-nav-list a:hover,
.page-faq .faq-nav-list a:focus-visible {
  background: var(--ink-2);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-faq .faq-nav-k {
  display: block;
  font-family: var(--font-cond);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--frost);
}

.page-faq .faq-nav-d {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray);
}

/* ===== 断点 ===== */
@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-faq .faq-sum {
    grid-template-columns: 56px minmax(0, 1fr) 20px;
    gap: 14px;
    padding: 17px 20px;
  }

  .page-faq .faq-a {
    padding: 0 20px 20px 90px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
    column-gap: 36px;
    align-items: end;
  }

  .page-faq .faq-hero-copy {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-stats {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .faq-banner {
    grid-column: 1 / -1;
    grid-row: 2;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    column-gap: 34px;
    padding-top: 34px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-rail-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail-list > li + li {
    margin-top: 4px;
  }

  .page-faq .faq-rail-link {
    display: flex;
    white-space: normal;
    background: transparent;
  }

  .page-faq .faq-rail-link:hover,
  .page-faq .faq-rail-link:focus-visible {
    background: var(--ink-1);
  }

  .page-faq .faq-rail {
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 639px) {
  .page-faq .faq-a {
    padding-left: 16px;
  }

  .page-faq .faq-qtext {
    font-size: 16px;
  }

  .page-faq .faq-stat-num {
    font-size: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after,
  .page-faq .faq-hot-list a,
  .page-faq .faq-rail-link,
  .page-faq .faq-nav-list a,
  .page-faq .faq-search-input {
    transition: none;
  }
}