.page-faq {
  --accent: var(--cyan);
  padding-top: clamp(84px, 11vw, 112px);
  padding-bottom: clamp(72px, 12vw, 128px);
}

.page-faq .crumbs {
  margin-bottom: clamp(16px, 3vw, 26px);
}

/* 首屏 */
.page-faq .faq-hero {
  padding-bottom: clamp(22px, 4vw, 34px);
}

.page-faq .faq-hero h1 {
  max-width: 20ch;
  margin: 12px 0 0;
  font-size: clamp(30px, 5.4vw, 46px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-faq .faq-lede {
  max-width: 40em;
  margin: 18px 0 0;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--mist);
}

/* 现象速查条 */
.page-faq .faq-scan {
  padding-bottom: clamp(24px, 4vw, 36px);
}

.page-faq .faq-scan-title {
  margin: 0;
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .scan-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .scan-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--rock);
  border-radius: 999px;
  background: rgba(14, 26, 51, 0.5);
  color: var(--ivory);
  font-size: var(--fs-small);
  line-height: 1;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease),
    color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .scan-chip:hover,
.page-faq .scan-chip:focus-visible {
  border-color: var(--cyan);
  background: rgba(53, 224, 210, 0.14);
  color: var(--cyan);
  transform: translateY(-2px);
}

.page-faq .scan-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(53, 224, 210, 0.12);
}

/* 图像 */
.page-faq .faq-visual {
  padding-bottom: clamp(8px, 2vw, 16px);
}

.page-faq .faq-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--rock);
  border-radius: var(--radius);
  background: var(--navy);
  overflow: hidden;
}

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

.page-faq .faq-figure .media-caption {
  display: block;
  padding: 10px 16px;
  border-top: 1px solid rgba(42, 51, 70, 0.7);
  font-size: var(--fs-micro);
  color: var(--mist);
}

.page-faq .faq-figure--inline {
  margin-bottom: 20px;
  border-radius: var(--radius-s);
}

/* 章节标题 */
.page-faq .faq-block {
  margin-top: clamp(44px, 7vw, 76px);
}

.page-faq .faq-block--download {
  --accent: var(--gold);
}

.page-faq .faq-block--sync {
  --accent: var(--coral);
}

.page-faq .faq-block--enterprise {
  --accent: var(--clay);
}

.page-faq .faq-block--handoff {
  --accent: var(--gold);
}

.page-faq .faq-block-head {
  position: relative;
  display: flex;
  gap: 16px;
  padding-top: 18px;
  border-top: 1px solid var(--rock);
  margin-bottom: 20px;
}

.page-faq .faq-block-head::after {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 56px;
  height: 1px;
  background: var(--accent);
}

.page-faq .faq-num {
  flex: 0 0 auto;
  padding-top: 7px;
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.page-faq .faq-block-title h2 {
  margin: 0;
  font-size: clamp(22px, 3.4vw, 30px);
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-faq .faq-block-title p {
  margin: 6px 0 0;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--mist);
}

/* 折叠条目 */
.page-faq .faq-item {
  border: 1px solid var(--rock);
  border-radius: var(--radius-s);
  background: linear-gradient(180deg, rgba(14, 26, 51, 0.55), rgba(7, 10, 18, 0.35));
  margin-top: 10px;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(138, 151, 173, 0.5);
}

.page-faq .faq-item[open] {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(19, 31, 58, 0.9), rgba(7, 10, 18, 0.55));
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  color: var(--ivory);
  font-size: var(--fs-body);
  font-weight: 500;
  line-height: 1.5;
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  border-radius: var(--radius-s);
}

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

.page-faq .faq-mark {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--accent);
  border-radius: 1px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .faq-mark::before {
  top: 8px;
  left: 0;
  width: 18px;
  height: 2px;
}

.page-faq .faq-mark::after {
  top: 0;
  left: 8px;
  width: 2px;
  height: 18px;
}

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

.page-faq .faq-body {
  padding: 16px 16px 22px;
  border-top: 1px solid rgba(42, 51, 70, 0.6);
}

/* 编号步骤 */
.page-faq .faq-steps {
  counter-reset: step;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: step;
  padding: 0 0 16px 36px;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-steps li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps li::after {
  content: "";
  position: absolute;
  top: 24px;
  bottom: 0;
  left: 12px;
  width: 1px;
  background: linear-gradient(180deg, rgba(138, 151, 173, 0.35), rgba(138, 151, 173, 0.05));
}

.page-faq .faq-steps li:last-child::after {
  display: none;
}

.page-faq .faq-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: 25px;
  height: 25px;
  border-radius: 50%;
  background: var(--obsidian);
  box-shadow: inset 0 0 0 1px var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
}

.page-faq .faq-tip {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid rgba(255, 107, 74, 0.5);
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-tip .text-link {
  color: var(--cyan);
}

/* 收尾交接区 */
.page-faq .handoff-grid {
  display: grid;
  gap: 14px;
}

.page-faq .handoff-card {
  padding: 20px;
  border: 1px solid var(--rock);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(19, 31, 58, 0.85), rgba(7, 10, 18, 0.5));
}

.page-faq .handoff-card h3 {
  margin: 0 0 10px;
  font-size: var(--fs-h3);
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-faq .handoff-card p {
  margin: 0 0 16px;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .prepare-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .prepare-list li {
  position: relative;
  padding: 0 0 10px 18px;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .prepare-list li:last-child {
  padding-bottom: 0;
}

.page-faq .prepare-list li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

/* 返回顶部 */
.page-faq .faq-totop {
  position: fixed;
  left: 18px;
  bottom: 18px;
  z-index: 20;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 13px;
  border: 1px solid var(--rock);
  border-radius: 999px;
  background: rgba(7, 10, 18, 0.86);
  color: var(--mist);
  font-size: var(--fs-micro);
  line-height: 1;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* 响应式 */
@media (min-width: 768px) {
  .page-faq .faq-item summary {
    padding: 17px 22px;
  }

  .page-faq .faq-body {
    padding: 18px 22px 24px;
  }

  .page-faq .faq-totop {
    left: 28px;
    bottom: 28px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-block-head {
    display: grid;
    grid-template-columns: auto minmax(0, 0.85fr) minmax(0, 1.15fr);
    column-gap: 28px;
    align-items: start;
  }

  .page-faq .faq-num {
    padding-top: 9px;
  }

  .page-faq .faq-block-title p {
    margin-top: 4px;
  }

  .page-faq .handoff-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 18px;
  }

  .page-faq .handoff-card {
    padding: 26px;
  }
}

@media (min-width: 1200px) {
  .page-faq .scan-list {
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .scan-chip,
  .page-faq .faq-item,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after,
  .page-faq .faq-totop {
    transition: none;
  }

  .page-faq .scan-chip:hover {
    transform: none;
  }
}
<<<END>>>