.page-faq {
  --faq-rail-w: 168px;
  --faq-gap: 56px;
  --faq-soft: rgba(242, 244, 255, 0.72);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 52px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -20% auto auto;
  width: 62%;
  height: 150%;
  background:
    radial-gradient(circle at 70% 30%, rgba(124, 77, 255, 0.28), transparent 62%),
    radial-gradient(circle at 30% 70%, rgba(37, 244, 224, 0.14), transparent 58%);
  transform: skewX(-8deg);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 26px;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: 34px;
  align-items: start;
}

.page-faq .faq-hero__lead h1 {
  margin: 12px 0 20px;
  font-size: clamp(32px, 7vw, 56px);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__intro {
  margin: 0;
  max-width: 40ch;
  font-size: 17px;
  line-height: 1.9;
  color: var(--star);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 22px;
  margin: 38px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.page-faq .faq-hero__stats .stat__value {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.1;
}

.page-faq .faq-hero__stats .stat__label {
  display: block;
  margin-top: 6px;
  font-size: var(--fs-label);
  letter-spacing: 0.12em;
  color: var(--mist);
}

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

.page-faq .faq-hero__figure .figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(124, 77, 255, 0.45);
  background: var(--indigo);
}

.page-faq .faq-hero__figure .figure__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(5, 6, 14, 0) 40%, rgba(5, 6, 14, 0.65));
  pointer-events: none;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

.page-faq .faq-hero__figure .figure__caption {
  margin-top: 12px;
  font-size: var(--fs-note);
  color: var(--mist);
}

/* 主体两列 */
.page-faq .faq-body {
  display: grid;
  gap: 30px;
  padding-bottom: 76px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: var(--fs-label);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--mist);
  font-size: var(--fs-label);
  letter-spacing: 0.16em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--fade), border-color var(--fade), background var(--fade);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(37, 244, 224, 0.07);
}

.page-faq .faq-rail__num {
  font-family: var(--font-num);
  color: var(--violet);
}

.page-faq .faq-rail__note {
  margin: 16px 0 0;
  font-size: var(--fs-label);
  letter-spacing: 0.08em;
  color: var(--line);
  color: var(--mist);
}

/* 筛选条 */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-bottom: 14px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-filter .label {
  margin-right: 4px;
}

.page-faq .is-filtered-out {
  display: none;
}

/* 章节 */
.page-faq .faq-group {
  margin-top: 44px;
}

.page-faq .chapter__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 0 18px;
  border-top: 2px solid var(--violet);
}

.page-faq .chapter__num {
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--violet);
}

.page-faq .chapter__title {
  margin: 0 0 8px;
  font-size: clamp(20px, 3.4vw, 28px);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-faq .chapter__meta {
  margin: 0;
  font-size: var(--fs-note);
  color: var(--mist);
}

/* 折叠问答 */
.page-faq .accordion {
  margin-top: 6px;
}

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

.page-faq .accordion__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  width: 100%;
  padding: 18px 6px;
  background: transparent;
  border: 0;
  color: var(--star);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background var(--fade), color var(--fade);
}

.page-faq .accordion__trigger:hover,
.page-faq .accordion__trigger:focus-visible {
  background: rgba(124, 77, 255, 0.1);
}

.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .accordion__index {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--violet);
}

.page-faq .accordion__q {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
}

.page-faq .accordion__sign {
  position: relative;
  width: 16px;
  height: 16px;
  border: 1px solid var(--violet);
  border-radius: 50%;
  flex: none;
}

.page-faq .accordion__sign::before,
.page-faq .accordion__sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform var(--fade), opacity var(--fade);
}

.page-faq .accordion__sign::before {
  width: 8px;
  height: 1px;
}

.page-faq .accordion__sign::after {
  width: 1px;
  height: 8px;
}

.page-faq .accordion__trigger[aria-expanded="true"] .accordion__sign::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .accordion__panel {
  padding: 0 6px 20px 42px;
}

.page-faq .accordion__panel p {
  margin: 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--star);
}

/* 内嵌信息图 */
.page-faq .faq-figure {
  margin: 20px 0 8px;
}

.page-faq .faq-figure .figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(37, 244, 224, 0.3);
  background: var(--deep);
}

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

.page-faq .faq-figure .figure__caption {
  margin-top: 12px;
  font-size: var(--fs-note);
  color: var(--mist);
}

/* 提示带 */
.page-faq .faq-cue {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 26px;
  padding: 18px 22px;
  background: linear-gradient(100deg, rgba(58, 30, 110, 0.92), rgba(11, 18, 48, 0.4));
  border-left: 3px solid var(--cyan);
}

.page-faq .faq-cue__text {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--star);
}

/* 结尾 */
.page-faq .faq-outro {
  margin-top: 64px;
  padding: 34px 26px;
  border: 1px solid rgba(124, 77, 255, 0.4);
  background: linear-gradient(140deg, rgba(23, 30, 66, 0.9), rgba(5, 6, 14, 0.6));
}

.page-faq .faq-outro h2 {
  margin: 12px 0 12px;
  font-size: clamp(22px, 4vw, 32px);
  letter-spacing: -0.01em;
}

.page-faq .faq-outro__text {
  margin: 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--star);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* 平板及以上 */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 40px 0 64px;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 44px;
  }

  .page-faq .faq-hero__figure {
    margin-top: 44px;
  }
}

/* 桌面：左侧竖排锚点 + 右侧问答长卷 */
@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: var(--faq-gap);
    padding-bottom: 104px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }

  .page-faq .faq-rail__list {
    overflow: visible;
    gap: 10px;
  }

  .page-faq .faq-rail__link {
    writing-mode: vertical-rl;
    text-orientation: upright;
    gap: 10px;
    padding: 14px 8px;
    white-space: normal;
  }

  .page-faq .faq-rail__num {
    writing-mode: horizontal-tb;
  }

  .page-faq .faq-group {
    margin-top: 52px;
  }

  .page-faq .faq-outro {
    padding: 42px 40px;
  }
}

/* 大屏：问答文字略微放大 */
@media (min-width: 1200px) {
  .page-faq .accordion__q {
    font-size: 18px;
  }

  .page-faq .accordion__panel p {
    font-size: 17px;
  }
}