.page-faq {
  --faq-aside: 168px;
  --faq-gap: clamp(18px, 3vw, 40px);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: clamp(20px, 4vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -8%;
  width: min(560px, 78vw);
  height: min(560px, 78vw);
  background: radial-gradient(circle, rgba(79, 227, 208, 0.16), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-hero__kicker {
  color: var(--c-cyan);
  font-size: 12px;
  letter-spacing: 0.14em;
  margin: 0 0 12px;
}

.page-faq .faq-hero__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(28px, 5.4vw, 46px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-text);
  margin: 0 0 16px;
}

.page-faq .faq-hero__lead {
  color: var(--c-text-2);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  max-width: 60ch;
  margin: 0;
}

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

.page-faq .faq-hero__figure .figure__frame {
  aspect-ratio: 2 / 1;
}

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

/* 分组跳转 */
.page-faq .faq-jump {
  list-style: none;
  margin: clamp(24px, 3.5vw, 34px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-text-2);
  text-decoration: none;
  padding: 9px 13px;
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  background: rgba(18, 36, 59, 0.62);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-faq .faq-jump__link:hover {
  color: var(--c-cyan);
  border-color: var(--c-cyan);
  transform: translateY(-2px);
}

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

/* 首屏数据锚点 */
.page-faq .faq-stats {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  background: var(--c-line);
}

.page-faq .faq-stats__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 16px;
  background: var(--c-ink);
}

.page-faq .faq-stats__item:first-child {
  padding-left: 0;
}

.page-faq .faq-stats__value {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--c-orange);
}

.page-faq .faq-stats__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-mist);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-group__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--c-orange);
  margin: 0 0 10px;
}

.page-faq .faq-group__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--c-text);
  margin: 0 0 12px;
}

.page-faq .faq-group__tag,
.page-faq .faq-group .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-mist);
  border: 1px solid var(--c-line);
  border-radius: 999px;
  padding: 4px 10px;
  background: rgba(18, 36, 59, 0.5);
}

.page-faq .faq-group__lead {
  color: var(--c-text-2);
  font-size: 15px;
  line-height: 1.85;
  max-width: 58ch;
  margin: 0 0 22px;
}

.page-faq .faq-group__body a,
.page-faq .faq-prep__main a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 227, 208, 0.4);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-faq .faq-group__body a:hover,
.page-faq .faq-prep__main a:hover {
  color: var(--c-cyan-soft);
  border-color: var(--c-cyan-soft);
}

/* ---------- 折叠面板 ---------- */
.page-faq .fold {
  border-top: 1px solid var(--c-line);
}

.page-faq .fold:last-of-type {
  border-bottom: 1px solid var(--c-line);
}

.page-faq .fold__summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 36px 18px 2px;
  position: relative;
  color: var(--c-text);
  font-size: 16px;
  line-height: 1.7;
  transition: color var(--t) var(--ease);
}

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

.page-faq .fold__summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--c-cyan);
}

.page-faq .fold[open] > .fold__summary::after {
  content: "–";
}

.page-faq .fold__summary:hover {
  color: var(--c-cyan);
}

.page-faq .fold__summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

.page-faq .faq-q__num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
  padding-top: 4px;
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .fold__body {
  margin-left: 8px;
  padding: 2px 0 22px 18px;
  border-left: 1px solid var(--c-cyan);
  color: var(--c-text-2);
  font-size: 15px;
  line-height: 1.85;
  animation: faq-fade var(--t) var(--ease) both;
}

.page-faq .fold__body p {
  margin: 0;
}

.page-faq .fold__body p + p {
  margin-top: 10px;
}

/* 步骤清单 */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.page-faq .faq-steps__item::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
  padding-top: 4px;
}

/* 下载章节配图 */
.page-faq .faq-download__figure {
  margin: 0 0 24px;
}

.page-faq .faq-download__figure .figure__frame {
  aspect-ratio: 8 / 5;
}

/* ---------- 中部呼吸区 ---------- */
.page-faq .faq-breathe {
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  background: linear-gradient(180deg, rgba(18, 36, 59, 0.72), rgba(10, 22, 38, 0));
}

.page-faq .faq-breathe__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
}

.page-faq .faq-breathe__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: -0.02em;
  color: var(--c-text);
  margin: 0;
}

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

.page-faq .faq-breathe__paths {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 28px);
}

/* ---------- 联系支持前的准备 ---------- */
.page-faq .faq-prep__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-faq .faq-prep__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 32px);
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--c-text);
  margin: 0 0 12px;
}

.page-faq .faq-prep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-prep__item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-prep__badge {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
  padding-top: 4px;
}

.page-faq .faq-prep__text {
  color: var(--c-text-2);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-prep__contact {
  background: var(--c-layer);
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  padding: clamp(20px, 3vw, 30px);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-prep__contact-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--c-text);
  margin: 0 0 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-prep__dl {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-prep__row {
  display: grid;
  gap: 4px;
}

.page-faq .faq-prep__dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-mist);
}

.page-faq .faq-prep__dd {
  margin: 0;
  color: var(--c-text);
  font-size: 15px;
  line-height: 1.7;
  word-break: break-word;
}

.page-faq .faq-prep__hint {
  margin: 20px 0 0;
  padding: 12px 0 0 14px;
  border-top: 1px solid var(--c-line);
  border-left: 2px solid var(--c-cyan);
  color: var(--c-mist);
  font-size: 13px;
  line-height: 1.8;
}

@keyframes faq-fade {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-stats__item:first-child {
    padding-left: 0;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-group__layout,
  .page-faq .faq-breathe__inner {
    grid-template-columns: var(--faq-aside) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 48px);
  }

  .page-faq .faq-group__aside {
    position: sticky;
    top: 132px;
    align-self: start;
  }

  .page-faq .faq-prep__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

@media (max-width: 520px) {
  .page-faq .fold__summary {
    gap: 10px;
    font-size: 15px;
  }

  .page-faq .fold__body {
    margin-left: 4px;
    padding-left: 14px;
  }

  .page-faq .faq-jump__link {
    font-size: 11px;
    padding: 8px 10px;
  }

  .page-faq .faq-stats__item:first-child {
    padding-left: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .fold__body {
    animation: none;
  }

  .page-faq .faq-jump__link,
  .page-faq .fold__summary {
    transition: none;
  }

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