.page-faq {
  --faq-index-w: 232px;
  --faq-col-gap: 44px;
  --faq-tone: var(--cyan);
  --faq-soft: rgba(245, 247, 250, 0.045);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 10px 0 34px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-title {
  font-family: var(--font-display);
  font-size: clamp(27px, 6.4vw, 44px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 10px 0 16px;
  max-width: 17em;
}

.page-faq .faq-lede {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-path {
  display: block;
  width: 100%;
  max-width: 720px;
  height: auto;
}

/* ---------- 主结构 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 30px;
}

.page-faq .faq-index {
  min-width: 0;
  position: sticky;
  top: 0;
  z-index: 6;
  background: var(--ink);
  padding: 10px 0 8px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-index-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--text);
  border-color: var(--cyan);
  background: rgba(34, 211, 238, 0.08);
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

/* ---------- 问答正文列 ---------- */
.page-faq .faq-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 54px;
}

.page-faq .faq-group {
  scroll-margin-top: 92px;
}

.page-faq .faq-group[data-tone="cyan"] { --faq-tone: var(--cyan); }
.page-faq .faq-group[data-tone="orange"] { --faq-tone: var(--orange); }
.page-faq .faq-group[data-tone="violet"] { --faq-tone: var(--violet); }

/* 分组标题牌 */
.page-faq .faq-group-head {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group-head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 68px;
  height: 2px;
  background: var(--faq-tone);
}

.page-faq .faq-group-no {
  display: inline-block;
  padding: 4px 8px;
  border: 1px solid currentColor;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--faq-tone);
}

.page-faq .faq-group-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-group-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
}

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

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  margin-top: 6px;
}

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

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--text);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-q:hover,
.page-faq .faq-q:focus-visible {
  color: var(--faq-tone);
}

.page-faq .faq-q-mark {
  flex: 0 0 auto;
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-q-mark::before,
.page-faq .faq-q-mark::after {
  content: "";
  position: absolute;
  background: var(--faq-tone);
}

.page-faq .faq-q-mark::before {
  left: 3px;
  right: 3px;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-q-mark::after {
  top: 3px;
  bottom: 3px;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-q-mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

/* 答案纸张叠层 */
.page-faq .faq-a {
  position: relative;
  margin: 0 0 20px 30px;
  padding: 18px 20px 18px 22px;
  background: var(--faq-soft);
  border-left: 2px solid var(--faq-tone);
  border-radius: var(--radius);
  font-size: 15.5px;
  line-height: 1.88;
  color: var(--muted);
}

.page-faq .faq-a::before {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  top: 6px;
  bottom: -6px;
  border-left: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  pointer-events: none;
}

.page-faq .faq-a p {
  margin: 0 0 10px;
}

.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-a p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, 0.4);
  transition: border-color 0.2s var(--ease);
}

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

.page-faq .faq-inline {
  display: inline-block;
  margin-top: 12px;
  padding: 7px 13px;
  border: 1px solid rgba(255, 138, 61, 0.45);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.5;
  color: var(--orange);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-inline:hover,
.page-faq .faq-inline:focus-visible {
  color: var(--ink);
  background: var(--orange);
  border-color: var(--orange);
}

/* ---------- 收尾入口 ---------- */
.page-faq .faq-more {
  position: relative;
  margin-top: 8px;
  padding: 28px 22px 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-more::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 92px;
  height: 2px;
  background: var(--orange);
}

.page-faq .faq-more-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  color: var(--text);
}

.page-faq .faq-more-text {
  margin: 0 0 20px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-more-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding-bottom: 40px;
  }

  .page-faq .faq-body {
    gap: 62px;
  }

  .page-faq .faq-group-title {
    font-size: 25px;
  }

  .page-faq .faq-group-head {
    padding-bottom: 22px;
  }

  .page-faq .faq-q {
    font-size: 17.5px;
    padding: 20px 0;
  }

  .page-faq .faq-more {
    padding: 34px 32px 32px;
  }
}

/* ---------- 桌面：侧轨索引 + 正文列 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: var(--faq-col-gap);
    align-items: start;
    margin-top: 46px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 28px;
    padding: 2px 0 2px 18px;
    background: none;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-index-link {
    width: 100%;
    padding: 10px 12px 10px 0;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    background: none;
    color: var(--text);
    border-bottom-color: var(--cyan);
  }
}

/* ---------- 宽屏：导航分组左右分栏 ---------- */
@media (min-width: 1180px) {
  .page-faq .faq-group--split .faq-group-body {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: start;
    margin-top: 6px;
  }

  .page-faq .faq-group--split .faq-figure {
    margin: 20px 0 0;
    position: sticky;
    top: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q,
  .page-faq .faq-index-link,
  .page-faq .faq-inline,
  .page-faq .faq-a p a,
  .page-faq .faq-q-mark::after {
    transition: none;
  }
}
<<<END>>>