.page-faq {
  --faq-rail-w: 212px;
  padding-bottom: clamp(64px, 9vw, 120px);
}

.page-faq .crumb {
  padding-top: clamp(20px, 4.5vw, 48px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 5vw, 52px);
  align-items: center;
  padding-top: clamp(26px, 5vw, 54px);
  padding-bottom: clamp(34px, 6vw, 70px);
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.2vw, 64px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 20px 0 0;
  max-width: 58ch;
  color: var(--paper-soft);
}

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

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 32px 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-stats li {
  background: var(--ink);
  padding: 14px 13px 16px;
  min-width: 0;
}

.page-faq .faq-stats b {
  display: block;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-stats span {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

.page-faq .faq-hero__visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: clamp(200px, 32vw, 330px);
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 78% 16%, rgba(255, 106, 26, .17), transparent 58%),
    radial-gradient(100% 90% at 14% 88%, rgba(46, 211, 255, .13), transparent 62%),
    var(--surface);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  overflow: hidden;
}

.page-faq .faq-hero__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 46px 46px;
  opacity: .55;
}

.page-faq .faq-hero__glyph {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(108px, 22vw, 196px);
  line-height: .82;
  color: rgba(255, 106, 26, .16);
  -webkit-text-stroke: 2px var(--orange);
  text-shadow: 0 0 46px rgba(255, 106, 26, .48);
}

.page-faq .faq-hero__tag {
  position: absolute;
  right: 15px;
  bottom: 13px;
  z-index: 1;
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--muted);
}

/* ---------- 关键词定位 ---------- */
.page-faq .faq-filter {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .faq-filter__input {
  display: block;
  width: 100%;
  max-width: 430px;
  padding: 11px 17px;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--paper);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-cap);
  outline: none;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-faq .faq-filter__input::placeholder {
  color: var(--muted);
}

.page-faq .faq-filter__input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(46, 211, 255, .14);
}

/* ---------- 主体：锚点轴 + 问答列 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-faq .faq-rail {
  position: relative;
}

.page-faq .faq-rail__label {
  margin: 0 0 12px;
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--muted);
}

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

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

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 9px;
  white-space: nowrap;
  padding: 8px 15px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-cap);
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-rail__num {
  font-size: 11px;
  opacity: .72;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--blue);
  border-color: var(--blue);
  background: rgba(46, 211, 255, .06);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  position: relative;
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(46px, 7vw, 86px);
  padding-top: clamp(30px, 5vw, 54px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, var(--orange), transparent);
  box-shadow: 0 0 10px rgba(255, 106, 26, .55);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 15px;
  align-items: start;
  margin-bottom: 20px;
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  font-size: clamp(32px, 7vw, 54px);
  font-weight: 700;
  line-height: .92;
  color: var(--line);
  transition: color .45s var(--ease);
}

.page-faq .faq-group__num.is-lit {
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 4px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3.1vw, 28px);
  line-height: 1.26;
  color: var(--paper);
}

.page-faq .faq-group__desc {
  grid-column: 2;
  margin: 10px 0 0;
  max-width: 54ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-group__figure {
  margin: 0 0 22px;
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

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

.page-faq .qa__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--orange);
  box-shadow: 0 0 12px rgba(255, 106, 26, .7);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform .22s var(--ease);
}

.page-faq .qa__item:has(.qa__q[aria-expanded="true"])::before {
  transform: scaleY(1);
}

.page-faq .qa__head {
  display: flex;
  align-items: flex-start;
  gap: 4px;
}

.page-faq .qa__q {
  flex: 1 1 auto;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  min-width: 0;
  margin: 0;
  padding: 17px 4px 17px 17px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16.5px;
  font-weight: 500;
  line-height: 1.55;
  -webkit-tap-highlight-color: transparent;
  transition: color .18s var(--ease);
}

.page-faq .qa__q:hover {
  color: var(--orange-soft);
}

.page-faq .qa__idx {
  flex: none;
  padding-top: 3px;
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--muted);
  transition: color .18s var(--ease);
}

.page-faq .qa__q:hover .qa__idx,
.page-faq .qa__q[aria-expanded="true"] .qa__idx {
  color: var(--orange);
}

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

.page-faq .qa__sign {
  flex: none;
  position: relative;
  width: 13px;
  height: 13px;
  margin-top: 5px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform .2s var(--ease), opacity .2s var(--ease), background .2s var(--ease);
}

.page-faq .qa__sign::before {
  left: 0;
  top: 6px;
  width: 13px;
  height: 1.5px;
}

.page-faq .qa__sign::after {
  left: 6px;
  top: 0;
  width: 1.5px;
  height: 13px;
}

.page-faq .qa__q:hover .qa__sign::before,
.page-faq .qa__q:hover .qa__sign::after {
  background: var(--orange);
}

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

.page-faq .qa__share {
  flex: none;
  align-self: center;
  margin: 0 2px 0 0;
  padding: 6px 10px;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--muted);
  background: none;
  border: 1px solid transparent;
  border-radius: var(--r-cap);
  white-space: nowrap;
  cursor: pointer;
  opacity: 0;
  transition: opacity .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .qa__item:hover .qa__share,
.page-faq .qa__share:focus-visible {
  opacity: 1;
}

.page-faq .qa__share:hover {
  color: var(--blue);
  border-color: var(--blue);
}

.page-faq .qa__a {
  padding: 0 20px 19px 17px;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--paper-soft);
}

.page-faq .qa__a a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 211, 255, .45);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .qa__a a:hover {
  color: var(--orange-soft);
  border-color: var(--orange-soft);
}

.page-faq .num {
  font-family: var(--font-mono);
  font-size: .93em;
  color: var(--paper);
  background: rgba(46, 211, 255, .1);
  border-bottom: 1px solid rgba(46, 211, 255, .36);
  padding: 0 4px;
  border-radius: 3px;
  white-space: nowrap;
}

/* ---------- 底部求助 ---------- */
.page-faq .faq-help {
  margin-top: clamp(48px, 7vw, 88px);
}

.page-faq .faq-help__inner {
  padding: clamp(24px, 4.5vw, 44px);
  border: 1px solid var(--line);
  background:
    radial-gradient(90% 140% at 92% 8%, rgba(46, 211, 255, .15), transparent 58%),
    radial-gradient(80% 120% at 4% 100%, rgba(255, 106, 26, .1), transparent 60%),
    var(--surface);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-faq .faq-help__coord {
  margin: 0;
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-faq .faq-help__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3.4vw, 31px);
  line-height: 1.28;
  color: var(--paper);
}

.page-faq .faq-help__text {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--paper-soft);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-stats b {
    font-size: 19px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
  }

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

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: visible;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-rail__link {
    margin-left: -1px;
    padding: 10px 0 10px 15px;
    font-size: 14.5px;
    background: none;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: none;
  }

  .page-faq .qa__q {
    font-size: 17px;
    padding: 19px 6px 19px 20px;
  }

  .page-faq .qa__a {
    padding: 0 24px 22px 20px;
  }
}

@media (hover: none) {
  .page-faq .qa__share {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__item::before,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .faq-group__num,
  .page-faq .qa__share,
  .page-faq .faq-rail__link,
  .page-faq .faq-filter__input {
    transition-duration: .01ms;
  }
}
<<<END>>>