.page-faq {
  --faq-cut: 18px;
  --faq-line: rgba(36, 51, 84, .9);
}

.page-faq .breadcrumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 6vw, 80px) 0 clamp(28px, 5vw, 60px);
}

.page-faq .faq-hero__glow {
  position: absolute;
  top: -160px;
  right: -140px;
  width: min(460px, 78vw);
  height: min(460px, 78vw);
  pointer-events: none;
  background: radial-gradient(closest-side, rgba(34, 224, 208, .26), rgba(34, 224, 208, 0) 72%);
  filter: blur(26px);
  opacity: .62;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 20px;
  max-width: 820px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-size: .76rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(2.1rem, 6.2vw, 4.2rem);
  line-height: 1.1;
  letter-spacing: -.022em;
  color: var(--white);
  transform: scaleX(.965);
  transform-origin: left center;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 56ch;
  color: var(--mist);
  font-size: clamp(.95rem, 1.05vw, 1.075rem);
  line-height: 1.85;
}

.page-faq .faq-hero__search {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 6px;
  padding: 14px 20px;
  border: 1px solid var(--rail);
  background: var(--night);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .faq-hero__key {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-size: 1rem;
  line-height: 1;
}

.page-faq .faq-hero__hint {
  color: var(--mist);
  font-size: .9rem;
  line-height: 1.6;
}

.page-faq .faq-hero__hint b {
  color: var(--cyan);
  font-weight: 600;
}

/* ---------- 浏览区骨架 ---------- */

.page-faq .faq-browse {
  padding-top: clamp(28px, 4vw, 52px);
  padding-bottom: clamp(56px, 9vw, 120px);
}

.page-faq .faq-browse__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

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

/* ---------- 分类索引 ---------- */

.page-faq .faq-index {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

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

.page-faq .faq-index__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  color: var(--mist);
  font-size: .9rem;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  background: var(--night);
  border: 1px solid transparent;
  transition: color .18s var(--ease), background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-index__link:hover {
  color: var(--white);
  background: var(--rim);
  border-color: var(--rail);
}

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

.page-faq .faq-index__num {
  color: var(--violet);
  font-size: .76rem;
  letter-spacing: .04em;
}

/* ---------- 问答分组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 6vw, 76px);
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px dashed var(--faq-line);
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 8px;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: clamp(1.24rem, 2.6vw, 1.72rem);
  font-weight: 800;
  letter-spacing: -.012em;
  line-height: 1.3;
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  color: var(--violet);
  font-size: .78em;
  letter-spacing: .04em;
}

.page-faq .faq-group__note {
  margin: 0 0 18px;
  max-width: 54ch;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.75;
}

/* ---------- 折叠条目 ---------- */

.page-faq .fold {
  padding-left: 16px;
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .fold__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  width: 100%;
  padding: 18px 0;
  border: 0;
  border-left: 2px solid transparent;
  margin-left: -16px;
  padding-left: 16px;
  background: none;
  color: var(--white);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  transition: color .18s var(--ease), border-left-color .18s var(--ease);
}

.page-faq .faq-list .fold .fold__head:hover {
  color: var(--cyan);
}

.page-faq .fold__head[aria-expanded="true"] {
  border-left-color: var(--cyan);
  color: var(--cyan);
}

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

.page-faq .faq-q {
  flex: 1 1 auto;
}

.page-faq .faq-mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 6px;
  color: var(--cyan);
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform .18s var(--ease), opacity .18s var(--ease);
}

.page-faq .faq-mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .fold__head[aria-expanded="true"] .faq-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

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

.page-faq .fold__head[aria-expanded="true"] + .fold__body {
  display: block;
}

.page-faq .fold__inner {
  padding: 0 0 22px 0;
  max-width: 62ch;
  color: var(--mist);
  font-size: .95rem;
  line-height: 1.85;
  animation: faq-fade .18s var(--ease) both;
}

.page-faq .fold__inner p {
  margin: 0 0 .7em;
}

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

.page-faq .fold__inner b.mono {
  color: var(--cyan);
  font-weight: 600;
}

.page-faq .fold__inner a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 208, .38);
  transition: border-color .18s var(--ease);
}

.page-faq .fold__inner a:hover {
  border-bottom-color: var(--cyan);
}

@keyframes faq-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------- 插图 ---------- */

.page-faq .faq-figure {
  margin: 26px 0 0;
}

.page-faq .faq-figure .media {
  border: 1px solid var(--rail);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

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

.page-faq .faq-figure .media__caption {
  margin-top: 10px;
  color: var(--mist);
  font-size: .82rem;
  line-height: 1.6;
}

.page-faq .faq-figure--wide {
  margin-top: clamp(38px, 6vw, 72px);
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px dashed var(--faq-line);
}

/* ---------- 路径示意 ---------- */

.page-faq .faq-path {
  margin-top: 26px;
  line-height: 0;
}

.page-faq .faq-path svg {
  max-width: 100%;
  height: auto;
}

/* ---------- 桌面端 ---------- */

@media (min-width: 900px) {
  .page-faq .faq-browse__grid {
    grid-template-columns: minmax(190px, 224px) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 64px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
    align-self: start;
    border-left: 1px solid var(--rail);
    padding-left: 2px;
  }

  .page-faq .faq-index__label {
    display: block;
    margin: 0 0 12px 14px;
    font-size: .72rem;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--mist);
  }

  .page-faq .faq-index__link {
    width: 100%;
    white-space: normal;
    padding: 11px 14px;
    background: transparent;
    border: 0;
    border-left: 2px solid transparent;
    margin-left: -3px;
  }

  .page-faq .faq-index__link:hover {
    background: var(--rim);
    border-left-color: var(--rail);
  }

  .page-faq .faq-hero__inner {
    gap: 24px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__title {
    font-size: clamp(2.6rem, 5.4vw, 4.6rem);
  }
}

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

  .page-faq .faq-index__link,
  .page-faq .fold__head,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after {
    transition-duration: 120ms;
    transition-property: opacity, color, background-color, border-color;
  }
}
<<<END>>>