.page-faq {
  --faq-rail: 236px;
  --faq-gap: 44px;
  background-color: var(--bd-paper);
  padding-bottom: 56px;
}

/* 页头 */
.page-faq .faq-head {
  padding: 26px 0 22px;
  border-bottom: 1px solid var(--bd-rule);
}

.page-faq .faq-head h1 {
  font-family: var(--bd-serif);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--bd-ink);
  margin: 10px 0 14px;
  max-width: 17ch;
}

.page-faq .faq-head__lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--bd-body);
  max-width: 60ch;
  margin: 0 0 16px;
}

.page-faq .faq-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 0;
  font-family: var(--bd-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--bd-muted);
}

.page-faq .faq-head__meta span {
  position: relative;
  padding-left: 13px;
}

.page-faq .faq-head__meta span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 5px;
  margin-top: -2px;
  background: var(--bd-jade);
  border-radius: 50%;
}

/* 横幅 */
.page-faq .faq-banner {
  margin: 26px 0 0;
}

.page-faq .faq-banner .bd-figure__frame {
  border: 1px solid var(--bd-rule);
  border-radius: var(--bd-r-md);
  overflow: hidden;
  background: var(--bd-paper-2);
}

.page-faq .bd-figure__frame img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-faq .faq-banner img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.02);
}

/* 主布局 */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: start;
  padding-top: 34px;
}

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

/* 左侧现象索引 */
.page-faq .faq-rail {
  border-left: 3px solid var(--bd-ochre);
  padding-left: 14px;
}

.page-faq .faq-rail__kicker {
  margin: 0 0 10px;
  font-family: var(--bd-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--bd-tea);
  text-transform: uppercase;
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 2px 2px 8px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__list > li {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--bd-rule);
  border-radius: var(--bd-r-pill);
  background: var(--bd-paper-3);
  color: var(--bd-ink);
  font-size: 13.5px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, background-color .18s ease;
}

.page-faq .faq-rail__no {
  font-family: var(--bd-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--bd-ochre);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--bd-amber);
  color: var(--bd-ochre);
}

.page-faq .faq-rail__note {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--bd-muted);
}

@media (min-width: 920px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
    padding-top: 42px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 128px;
    align-self: start;
    padding-left: 0;
    border-left: 0;
  }

  .page-faq .faq-rail__list {
    display: block;
    overflow: visible;
    padding: 0;
    border-top: 1px solid var(--bd-rule);
  }

  .page-faq .faq-rail__list > li {
    display: block;
  }

  .page-faq .faq-rail__link {
    position: relative;
    display: block;
    padding: 12px 12px 12px 16px;
    border: 0;
    border-bottom: 1px solid var(--bd-rule);
    border-radius: 0;
    background: transparent;
    white-space: normal;
  }

  .page-faq .faq-rail__link::after {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 3px;
    height: 62%;
    background: var(--bd-amber);
    transform: translateY(-50%) scaleY(0);
    transition: transform .18s ease;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: var(--bd-paper-2);
    border-color: var(--bd-rule);
  }

  .page-faq .faq-rail__link:hover::after,
  .page-faq .faq-rail__link:focus-visible::after {
    transform: translateY(-50%) scaleY(1);
  }

  .page-faq .faq-rail__no {
    display: inline-block;
    width: 26px;
  }
}

/* 区块 */
.page-faq .faq-block {
  padding-bottom: 36px;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--bd-rule);
}

.page-faq .faq-block:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
}

.page-faq .faq-block__num {
  flex: 0 0 auto;
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--bd-ochre);
  letter-spacing: 0.02em;
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--bd-serif);
  font-weight: 900;
  font-size: clamp(21px, 2.5vw, 28px);
  line-height: 1.3;
  color: var(--bd-ink);
}

.page-faq .faq-block__lead {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--bd-muted);
}

/* 折叠条目 */
.page-faq .faq-item {
  margin-bottom: 12px;
  border: 1px solid var(--bd-rule);
  border-left: 3px solid var(--bd-ochre);
  border-radius: var(--bd-r-sm);
  background: var(--bd-paper-3);
  overflow: hidden;
  transition: border-color .18s ease;
}

.page-faq .faq-item:hover {
  border-left-color: var(--bd-amber);
}

.page-faq .faq-item__sum {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 500;
  color: var(--bd-ink);
}

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

.page-faq .faq-item__sum::before {
  content: "";
  flex: 0 0 auto;
  order: -1;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--bd-muted);
  transition: transform .18s ease, border-top-color .18s ease;
}

.page-faq .faq-item[open] > .faq-item__sum::before {
  transform: rotate(-180deg);
  border-top-color: var(--bd-ochre);
}

.page-faq .faq-item__title {
  flex: 1 1 auto;
}

.page-faq .faq-item__hint {
  flex: 0 0 auto;
  padding: 3px 9px;
  border-radius: var(--bd-r-pill);
  background: var(--bd-paper-2);
  font-family: var(--bd-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--bd-tea);
}

.page-faq .faq-item__body {
  padding: 0 16px 16px;
  border-top: 1px dashed var(--bd-rule);
}

.page-faq .faq-item__verdict {
  margin: 14px 0 12px;
  padding-left: 12px;
  border-left: 2px solid var(--bd-amber);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.75;
  color: var(--bd-ochre);
}

.page-faq .faq-steps {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  position: relative;
  padding-left: 32px;
  counter-increment: faqstep;
  font-size: 14px;
  line-height: 1.8;
  color: var(--bd-body);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  padding: 1px 5px;
  border-radius: var(--bd-r-sm);
  background: rgba(62, 124, 116, .12);
  font-family: var(--bd-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--bd-jade);
}

/* 编号步骤 */
.page-faq .faq-path {
  display: grid;
  gap: 0;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--bd-rule);
}

.page-faq .faq-path > li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 4px;
  border-bottom: 1px solid var(--bd-rule);
  font-size: 14px;
  line-height: 1.8;
  color: var(--bd-body);
}

.page-faq .faq-path__n {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--bd-ochre);
  opacity: .85;
}

/* 版本号章节 */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: start;
}

.page-faq .faq-split__p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--bd-body);
}

.page-faq .faq-mini {
  margin: 0 0 16px;
  border-top: 1px solid var(--bd-rule);
}

.page-faq .faq-mini > div {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--bd-rule);
}

.page-faq .faq-mini dt {
  font-family: var(--bd-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--bd-muted);
}

.page-faq .faq-mini dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--bd-body);
}

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

.page-faq .faq-split__fig .bd-figure__frame {
  border: 1px solid var(--bd-rule);
  border-radius: var(--bd-r-sm);
  overflow: hidden;
  background: var(--bd-paper-2);
}

.page-faq .faq-split__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.75);
}

@media (min-width: 780px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    gap: 32px;
  }
}

/* 双路径卡 */
.page-faq .faq-paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.page-faq .faq-pathcard {
  padding: 18px 18px 20px;
  border: 1px solid var(--bd-rule);
  border-radius: var(--bd-r-md);
  background: var(--bd-paper-3);
  box-shadow: var(--bd-shadow);
}

.page-faq .faq-pathcard h3 {
  margin: 0 0 10px;
  font-family: var(--bd-serif);
  font-weight: 900;
  font-size: 17px;
  color: var(--bd-ink);
}

.page-faq .faq-pathcard p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--bd-body);
}

@media (min-width: 700px) {
  .page-faq .faq-paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .faq-pathcard--offset {
    margin-top: 26px;
  }
}

/* 提示块 */
.page-faq .faq-callout {
  margin-bottom: 18px;
  padding: 14px 16px;
  border: 1px solid var(--bd-rule);
  border-left: 3px solid var(--bd-jade);
  border-radius: var(--bd-r-sm);
  background: rgba(62, 124, 116, .07);
}

.page-faq .faq-callout p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--bd-body);
}

/* 行内指路 */
.page-faq .faq-inline-link {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--bd-muted);
}

.page-faq .faq-inline-link a {
  color: var(--bd-ochre);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-inline-link a:hover,
.page-faq .faq-inline-link a:focus-visible {
  color: var(--bd-amber);
}

/* 联系区块 */
.page-faq .faq-block--help {
  padding: 26px 20px 28px;
  border: 0;
  border-radius: var(--bd-r-md);
  background: var(--bd-tea);
  color: #f1e7dc;
}

.page-faq .faq-block--help .faq-block__title {
  color: #fdf6ec;
}

.page-faq .faq-block--help .faq-block__num {
  color: var(--bd-amber);
}

.page-faq .faq-block--help .faq-block__lead {
  color: #e2d2c2;
}

.page-faq .faq-contact {
  display: grid;
  gap: 0;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(244, 239, 230, .28);
}

.page-faq .faq-contact > li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 14px 2px;
  border-bottom: 1px solid rgba(244, 239, 230, .28);
}

.page-faq .faq-contact__k {
  flex: 0 0 80px;
  font-size: 13px;
  color: #d6c3b0;
}

.page-faq .faq-contact__v {
  font-size: 15px;
  color: #fdf6ec;
  word-break: break-all;
}

.page-faq .faq-copy {
  appearance: none;
  margin-left: auto;
  padding: 6px 14px;
  border: 1px solid rgba(253, 246, 236, .45);
  border-radius: var(--bd-r-pill);
  background: transparent;
  color: #fdf6ec;
  font-family: var(--bd-sans);
  font-size: 13px;
  cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease;
}

.page-faq .faq-copy:hover,
.page-faq .faq-copy:focus-visible {
  background: rgba(255, 154, 31, .2);
  border-color: var(--bd-amber);
}

.page-faq .faq-help__tip {
  margin: 0 0 18px;
  font-size: 13px;
  line-height: 1.8;
  color: #e2d2c2;
}

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

/* 窄屏修正 */
@media (max-width: 520px) {
  .page-faq .faq-head h1 {
    max-width: none;
  }

  .page-faq .faq-block__head {
    gap: 10px;
  }

  .page-faq .faq-block__num {
    font-size: 19px;
  }

  .page-faq .faq-item__sum {
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .page-faq .faq-item__hint {
    margin-left: 21px;
  }

  .page-faq .faq-copy {
    margin-left: 0;
  }

  .page-faq .faq-mini > div {
    grid-template-columns: 62px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__sum::before,
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__link::after,
  .page-faq .faq-copy {
    transition: none;
  }
}