.page-faq {
  --faq-sticky-top: 88px;
  --faq-gap-s: 20px;
  --faq-gap-m: 32px;
  --faq-gap-l: 48px;
  display: block;
}

/* 面包屑 */
.page-faq .faq-crumb {
  margin-bottom: 28px;
  font-family: var(--ob-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ob-muted);
}
.page-faq .faq-crumb a {
  color: var(--ob-text-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ob-t), border-color var(--ob-t);
}
.page-faq .faq-crumb a:hover {
  color: var(--ob-accent);
  border-bottom-color: var(--ob-accent);
}
.page-faq .faq-crumb .ob-breadcrumb__sep {
  margin: 0 8px;
  color: var(--ob-line);
}

/* 首屏 */
.page-faq .faq-hero {
  padding: 24px 0 44px;
  border-bottom: 1px solid var(--ob-line);
  background:
    linear-gradient(180deg, rgba(43, 245, 192, 0.07) 0%, rgba(6, 18, 14, 0) 62%);
}
.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap-m);
  align-items: start;
}
.page-faq .faq-hero__title {
  margin: 10px 0 18px;
  color: var(--ob-text);
  letter-spacing: 0.02em;
  line-height: 1.1;
}
.page-faq .faq-hero__intro {
  margin: 0 0 20px;
  color: var(--ob-text-2);
  font-size: 16px;
  line-height: 1.8;
}
.page-faq .faq-hero__meta {
  margin: 0;
  font-family: var(--ob-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ob-muted);
  text-transform: none;
}
.page-faq .faq-hero__metaNum {
  color: var(--ob-accent);
  font-weight: 700;
  font-size: 15px;
}

/* 首屏索引 */
.page-faq .faq-index {
  border: 1px solid var(--ob-line);
  background: var(--ob-panel);
  padding: 18px 18px 16px;
  box-shadow: 6px 6px 0 0 var(--ob-deep);
}
.page-faq .faq-index__cap {
  margin: 0 0 12px;
  font-family: var(--ob-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ob-muted);
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
}
.page-faq .faq-index__item {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 12px 11px 14px;
  border: 1px solid var(--ob-line-soft);
  background: var(--ob-panel-2);
  color: var(--ob-text);
  text-decoration: none;
  overflow: hidden;
  transition: border-color var(--ob-t), color var(--ob-t);
}
.page-faq .faq-index__item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--ob-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--ob-t);
}
.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  border-color: var(--ob-line);
  color: var(--ob-accent-soft);
}
.page-faq .faq-index__item:hover::before,
.page-faq .faq-index__item:focus-visible::before {
  transform: scaleX(1);
}
.page-faq .faq-index__num {
  font-family: var(--ob-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ob-accent);
}
.page-faq .faq-index__name {
  flex: 1;
  font-family: var(--ob-display);
  font-size: 18px;
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.page-faq .faq-index__count {
  font-family: var(--ob-mono);
  font-size: 12px;
  color: var(--ob-muted);
  white-space: nowrap;
}
.page-faq .faq-index__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--ob-line);
  font-size: 14px;
  color: var(--ob-muted);
}
.page-faq .faq-index__foot a {
  color: var(--ob-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--ob-line);
  transition: border-color var(--ob-t);
}
.page-faq .faq-index__foot a:hover {
  border-bottom-color: var(--ob-accent);
}

/* 主体 */
.page-faq .faq-body {
  padding: 36px 0 64px;
}
.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap-m);
}

/* 分组导航（移动端为横向标签条） */
.page-faq .faq-side__inner {
  border-bottom: 1px solid var(--ob-line);
  padding-bottom: 14px;
}
.page-faq .faq-side__cap {
  margin: 0 0 10px;
  font-family: var(--ob-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ob-muted);
}
.page-faq .faq-side__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-faq .faq-side__item {
  flex: 0 0 auto;
}
.page-faq .faq-side__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--ob-line);
  background: var(--ob-panel-2);
  color: var(--ob-text-2);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: color var(--ob-t), border-color var(--ob-t), background var(--ob-t);
}
.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  color: var(--ob-accent);
  border-color: var(--ob-accent);
  background: var(--ob-panel);
}
.page-faq .faq-side__num {
  font-family: var(--ob-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ob-accent);
}
.page-faq .faq-side__name {
  font-family: var(--ob-display);
  letter-spacing: 0.02em;
}
.page-faq .faq-side__note {
  display: none;
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ob-muted);
}

/* 问答流 */
.page-faq .faq-stream {
  min-width: 0;
}
.page-faq .faq-group {
  margin: 0 0 52px;
  scroll-margin-top: 96px;
}
.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0 0;
  border-top: 1px solid var(--ob-line);
}
.page-faq .faq-group__num {
  font-family: var(--ob-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ob-accent);
}
.page-faq .faq-group__title {
  margin: 0;
  color: var(--ob-text);
  letter-spacing: 0.02em;
}
.page-faq .faq-group__lead {
  margin: 10px 0 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ob-muted);
}

.page-faq .faq-q {
  border-bottom: 1px solid var(--ob-line-soft);
}
.page-faq .faq-q__ask {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  justify-content: space-between;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  color: var(--ob-text);
  font-family: var(--ob-body);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  transition: color var(--ob-t);
}
.page-faq .faq-q__ask::-webkit-details-marker {
  display: none;
}
.page-faq .faq-q__ask::marker {
  content: "";
}
.page-faq .faq-q__ask::after {
  content: "";
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  margin-top: 6px;
  border: 1px solid var(--ob-accent);
  background: rgba(43, 245, 192, 0.16);
  transition: transform var(--ob-t), background var(--ob-t);
}
.page-faq .faq-q__ask:hover {
  color: var(--ob-accent-soft);
}
.page-faq .faq-q[open] .faq-q__ask {
  color: var(--ob-accent);
}
.page-faq .faq-q[open] .faq-q__ask::after {
  background: var(--ob-accent);
  transform: rotate(45deg);
}
.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}
.page-faq .faq-q__tag {
  margin-left: 8px;
  vertical-align: 2px;
}
.page-faq .faq-q__body {
  max-width: 62ch;
  padding: 0 0 18px;
}
.page-faq .faq-q__body p {
  margin: 0 0 10px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ob-text-2);
}
.page-faq .faq-q__body p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-figure {
  margin: 26px 0 8px;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* 组尾跳转 */
.page-faq .faq-group__more {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--ob-line);
}
.page-faq .faq-group__moreLabel {
  font-family: var(--ob-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ob-muted);
}
.page-faq .faq-group__more a {
  color: var(--ob-text);
  text-decoration: none;
  font-size: 15px;
  border-bottom: 1px solid var(--ob-line);
  transition: color var(--ob-t), border-color var(--ob-t);
}
.page-faq .faq-group__more a:hover,
.page-faq .faq-group__more a:focus-visible {
  color: var(--ob-accent);
  border-bottom-color: var(--ob-accent);
}

/* 收尾 */
.page-faq .faq-next {
  scroll-margin-top: 96px;
}
.page-faq .faq-next__inner {
  position: relative;
  padding: 26px 20px 26px 24px;
  border: 1px solid var(--ob-line);
  background:
    linear-gradient(135deg, rgba(240, 178, 58, 0.08) 0%, rgba(12, 31, 25, 0) 48%),
    var(--ob-panel);
  box-shadow: 6px 6px 0 0 var(--ob-deep);
}
.page-faq .faq-next__inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--ob-amber);
}
.page-faq .faq-next__num {
  display: block;
  font-family: var(--ob-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ob-amber);
  margin-bottom: 8px;
}
.page-faq .faq-next__title {
  margin: 0 0 12px;
  color: var(--ob-text);
}
.page-faq .faq-next__text {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ob-text-2);
}
.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

/* 中屏以上 */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 32px 0 56px;
  }
  .page-faq .faq-hero__intro {
    font-size: 17px;
    max-width: 46ch;
  }
  .page-faq .faq-index {
    padding: 22px 22px 18px;
  }
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .page-faq .faq-body {
    padding: 44px 0 80px;
  }
  .page-faq .faq-q__ask {
    font-size: 18px;
  }
  .page-faq .faq-next__inner {
    padding: 32px 32px 32px 36px;
  }
}

/* 桌面：非对称分栏 + 粘性侧栏 */
@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--faq-gap-l);
  }
  .page-faq .faq-hero__title {
    font-size: clamp(32px, 3.4vw, 46px);
  }
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: var(--faq-gap-l);
    align-items: start;
  }
  .page-faq .faq-side__inner {
    position: sticky;
    top: var(--faq-sticky-top);
    border-bottom: 0;
    padding-bottom: 0;
    border-left: 1px solid var(--ob-line);
    padding-left: 18px;
  }
  .page-faq .faq-side__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-side__link {
    display: flex;
    width: 100%;
    padding: 9px 10px;
    border-color: transparent;
    background: transparent;
    font-size: 15px;
    white-space: normal;
  }
  .page-faq .faq-side__link:hover,
  .page-faq .faq-side__link:focus-visible {
    border-color: var(--ob-line);
    background: var(--ob-panel-2);
  }
  .page-faq .faq-side__note {
    display: block;
  }
  .page-faq .faq-group {
    margin-bottom: 64px;
  }
  .page-faq .faq-q__ask {
    padding: 18px 0;
  }
}

/* 动效降级 */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__item::before,
  .page-faq .faq-q__ask::after,
  .page-faq .faq-q__ask,
  .page-faq .faq-side__link,
  .page-faq .faq-group__more a,
  .page-faq .faq-crumb a,
  .page-faq .faq-index__foot a {
    transition: none;
  }
  .page-faq .faq-index__item:hover::before,
  .page-faq .faq-index__item:focus-visible::before {
    transform: scaleX(1);
  }
  .page-faq .faq-q[open] .faq-q__ask::after {
    transform: none;
  }
}
<<<END>>>