.page-faq {
  --faq-idx: 216px;
  background: var(--paper);
  color: var(--ink);
}

.page-faq .breadcrumb {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(24px, 4vw, 46px) 0 clamp(34px, 5vw, 56px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(32px, 7vw, 62px);
  line-height: 1.14;
  letter-spacing: 0.03em;
  max-width: 15ch;
}

.page-faq .faq-hero__lede {
  margin-top: 20px;
  max-width: 48ch;
}

.page-faq .faq-hero__actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__aside {
  display: none;
}

/* ---------- 索引 + 问答主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(24px, 4vw, 36px);
  padding-top: clamp(26px, 4vw, 42px);
  padding-bottom: var(--step);
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-index__title {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gray);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--shell);
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 13px;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-index__no {
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ochre);
}

.page-faq .faq-index__link:hover {
  border-color: var(--sand);
  color: var(--ink);
}

.page-faq .faq-index__link[aria-current="true"] {
  border-color: var(--ochre);
  background: var(--jade-mist);
  color: var(--ink);
}

/* ---------- 问题分组 ---------- */
.page-faq .qa-group {
  min-width: 0;
}

.page-faq .qa-group + .qa-group {
  margin-top: clamp(44px, 6vw, 74px);
}

.page-faq .qa-group__head {
  padding-bottom: 16px;
  border-bottom: 2px solid var(--ink);
}

.page-faq .qa-group__no {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ochre);
}

.page-faq .qa-group__title {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.page-faq .qa-group__desc {
  margin-top: 10px;
  max-width: 54ch;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .qa-group__split {
  display: grid;
  gap: 22px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  margin-top: 4px;
}

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

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 16px;
  gap: 10px;
  align-items: start;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__no {
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gray);
  padding-top: 5px;
}

.page-faq .qa__text {
  font-weight: 700;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
}

.page-faq .qa__icon {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  background: var(--ochre);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .qa__icon::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 1.5px;
}

.page-faq .qa__icon::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 1.5px;
}

.page-faq .qa[open] .qa__icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa[open] .qa__text {
  color: var(--ochre-deep);
}

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

.page-faq .qa__answer p {
  margin: 0;
  max-width: 62ch;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.9;
}

.page-faq .qa__answer a {
  color: var(--jade);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 图文 ---------- */
.page-faq .qa-group__media {
  margin: 4px 0 0;
}

.page-faq .qa-group__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--sand);
  border-radius: var(--radius);
  object-fit: cover;
}

.page-faq .qa-group__media figcaption {
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gray);
  line-height: 1.7;
}

/* ---------- 设备尺寸示意 ---------- */
.page-faq .device-note {
  margin: 22px 0 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--shell);
}

.page-faq .device-note__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .dn-line {
  stroke: var(--line);
  stroke-width: 1;
}

.page-faq .dn-a {
  fill: none;
  stroke: var(--jade);
  stroke-width: 1.5;
}

.page-faq .dn-b {
  fill: none;
  stroke: var(--ochre);
  stroke-width: 2;
}

.page-faq .dn-dot {
  fill: var(--sand);
}

.page-faq .device-note__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--gray);
  line-height: 1.6;
}

/* ---------- 继续找入口 ---------- */
.page-faq .qa-group--help .qa-group__head {
  border-bottom-color: var(--jade);
}

.page-faq .help-links {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .help-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: baseline;
  padding: 18px;
  background: var(--shell);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.page-faq .help-link:hover {
  transform: translateY(-2px);
  border-color: var(--sand);
}

.page-faq .help-link__arrow {
  font-size: 12px;
  color: var(--ochre);
}

.page-faq .help-link strong {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
}

.page-faq .help-link span:last-child {
  grid-column: 2;
  color: var(--gray);
  font-size: 13px;
  line-height: 1.75;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .qa__text {
    font-size: 17px;
  }

  .page-faq .qa__answer {
    padding-left: 54px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 260px;
    align-items: center;
  }

  .page-faq .faq-hero__aside {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 320px;
    padding: 24px;
    background: var(--ochre-deep);
    border-radius: var(--radius);
    overflow: hidden;
  }

  .page-faq .faq-hero__glyph {
    font-family: var(--font-display);
    font-size: 150px;
    line-height: 0.82;
    color: var(--sand);
  }

  .page-faq .faq-hero__aside-no {
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--jade-mist);
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-idx) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 20px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__list li {
    flex: 1 1 auto;
  }

  .page-faq .faq-index__link {
    width: 100%;
    justify-content: flex-start;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: none;
    padding: 9px 0 9px 12px;
    font-size: 14px;
  }

  .page-faq .faq-index__link:hover {
    background: none;
    border-left-color: var(--sand);
  }

  .page-faq .faq-index__link[aria-current="true"] {
    background: none;
    border-left-color: var(--ochre);
  }
}

@media (min-width: 1024px) {
  .page-faq .qa-group__split {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 32px;
    align-items: start;
  }

  .page-faq .qa-group__media--wide {
    margin-top: 26px;
  }

  .page-faq .help-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__icon::before,
  .page-faq .qa__icon::after,
  .page-faq .help-link,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .help-link:hover {
    transform: none;
  }
}
<<<END>>>