.page-faq {
  background: var(--ink);
  color: var(--body-ink);
}

.page-faq .pathbar {
  padding-top: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mute);
}

.page-faq .pathbar a {
  color: var(--mute);
  text-decoration: none;
  transition: color 0.18s ease;
}

.page-faq .pathbar a:hover {
  color: var(--signal);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 12px 0 56px;
}

.page-faq .faq-hero::before,
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero::before {
  width: 440px;
  height: 440px;
  right: -170px;
  top: 30px;
  border: 1px solid var(--line);
  opacity: 0.55;
}

.page-faq .faq-hero::after {
  width: 200px;
  height: 200px;
  right: -50px;
  top: 210px;
  border: 1px dashed var(--line);
  opacity: 0.4;
}

.page-faq .faq-hero__in {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .display {
  margin: 20px 0 0;
  max-width: 14em;
}

.page-faq .faq-hero__lede {
  margin-top: 24px;
  max-width: 33em;
  color: var(--body-ink);
}

.page-faq .faq-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 40px;
  margin: 36px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.page-faq .faq-metrics li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-metrics b {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 21px;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-metrics li:nth-child(2) b {
  color: var(--neon);
}

.page-faq .faq-metrics span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mute);
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-body {
  padding-bottom: 72px;
}

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

/* 组别索引 · 移动端横向 */

.page-faq .faq-toc {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  margin-bottom: 40px;
}

.page-faq .faq-toc__hd {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mute);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 22px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 7px;
  white-space: nowrap;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  font-size: 13px;
  color: var(--mute);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-toc__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-faq .faq-toc__list a:hover {
  color: var(--mist);
}

.page-faq:has(#start:target) .faq-toc a[href="#start"],
.page-faq:has(#g-search:target) .faq-toc a[href="#g-search"],
.page-faq:has(#g-sync:target) .faq-toc a[href="#g-sync"],
.page-faq:has(#g-data:target) .faq-toc a[href="#g-data"] {
  color: var(--signal);
  border-color: var(--signal);
}

/* ---------- 内容组 ---------- */

.page-faq .faq-group {
  padding-bottom: 60px;
}

.page-faq .faq-group + .faq-group {
  border-top: 1px solid var(--line);
  padding-top: 50px;
}

.page-faq .faq-group__hd {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  margin-bottom: 26px;
}

.page-faq .faq-group__no {
  grid-row: span 2;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--signal);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 4.2vw, 28px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .faq-group__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mute);
}

/* ---------- 三步上手 ---------- */

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

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 24px;
  gap: 0 14px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: background-color 0.18s ease;
}

.page-faq .faq-step:hover {
  background: rgba(255, 255, 255, 0.018);
}

.page-faq .faq-step__no {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--mute);
  transition: color 0.18s ease;
}

.page-faq .faq-step__title {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  color: var(--mist);
}

.page-faq .faq-step__text {
  display: block;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-ink);
}

.page-faq .faq-step__tick {
  appearance: none;
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  margin: 2px 0 0;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: background-color 0.16s ease, border-color 0.16s ease;
}

.page-faq .faq-step__tick:checked {
  background: var(--signal);
  border-color: var(--signal);
}

.page-faq .faq-step__tick:checked::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 3px;
  width: 6px;
  height: 11px;
  border: solid var(--ink);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-faq .faq-step__tick:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.page-faq .faq-step:has(.faq-step__tick:checked) .faq-step__no {
  color: var(--signal);
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 0 0 26px;
  border: 1px solid var(--line);
  background: var(--surface);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-faq .faq-figure--narrow {
  margin: 30px 0 0;
}

/* ---------- 问答组 ---------- */

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

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

.page-faq .acc__btn {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 18px 12px 18px 16px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--mist);
  box-shadow: inset 2px 0 0 transparent;
  transition: box-shadow 0.2s ease, background-color 0.2s ease;
}

.page-faq .acc__btn:hover {
  background: rgba(255, 255, 255, 0.02);
}

.page-faq .acc__btn[aria-expanded="true"] {
  box-shadow: inset 2px 0 0 var(--signal);
  background: var(--surface);
}

.page-faq .acc__btn[aria-expanded="true"] .acc__sign {
  color: var(--signal);
}

.page-faq .acc__idx {
  flex: 0 0 auto;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mute);
}

.page-faq .acc__label {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.62;
  color: inherit;
}

.page-faq .acc__sign {
  flex: 0 0 auto;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.4;
  color: var(--mute);
  transition: color 0.18s ease;
}

.page-faq .acc__inner {
  padding: 0 14px 20px 40px;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--body-ink);
}

.page-faq .acc__inner p {
  margin: 0 0 10px;
}

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

.page-faq .acc__inner a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, 0.4);
}

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

/* ---------- 反馈流程 ---------- */

.page-faq .faq-fb {
  list-style: none;
  margin: 28px 0 0;
  padding: 0 0 0 2px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-fb li {
  position: relative;
  padding: 0 0 20px 24px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-ink);
}

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

.page-faq .faq-fb li::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
}

.page-faq .faq-fb span {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mute);
}

/* ---------- 下一步 ---------- */

.page-faq .faq-next {
  border-top: 1px solid var(--line);
  padding: 52px 0 72px;
}

.page-faq .faq-next__hd {
  margin: 0 0 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mute);
}

.page-faq .faq-next__grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-next__card {
  display: block;
  padding: 20px 18px;
  border: 1px solid var(--line);
  background: var(--surface);
  text-decoration: none;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-next__card:hover {
  border-color: var(--signal);
  background: var(--surface-2);
}

.page-faq .faq-next__card b {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.005em;
  color: var(--mist);
}

.page-faq .faq-next__card small {
  display: block;
  font-size: 13px;
  line-height: 1.72;
  color: var(--mute);
}

.page-faq .faq-back {
  display: inline-block;
  margin-top: 34px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mute);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-back:hover {
  color: var(--signal);
  border-color: var(--signal);
}

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 24px 0 76px;
  }

  .page-faq .faq-hero::before {
    width: 620px;
    height: 620px;
    right: -140px;
    top: 10px;
  }

  .page-faq .faq-hero::after {
    width: 280px;
    height: 280px;
    right: -20px;
    top: 260px;
  }

  .page-faq .faq-metrics {
    gap: 24px 64px;
  }

  .page-faq .faq-metrics b {
    font-size: 26px;
  }

  .page-faq .faq-body {
    display: grid;
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
    padding-bottom: 96px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--cmd-h) + 36px);
    margin-bottom: 0;
    padding: 4px 0 4px 18px;
    border: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-toc__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__list li + li {
    margin-top: 14px;
  }

  .page-faq .faq-toc__list a {
    white-space: normal;
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-faq .faq-group {
    padding-bottom: 84px;
  }

  .page-faq .faq-group + .faq-group {
    padding-top: 64px;
  }

  .page-faq .faq-group__hd {
    margin-bottom: 32px;
  }

  .page-faq .faq-step {
    grid-template-columns: 40px minmax(0, 1fr) 24px;
    gap: 0 20px;
    padding: 24px 0;
  }

  .page-faq .faq-figure {
    margin-bottom: 32px;
  }

  .page-faq .faq-figure--narrow {
    max-width: 380px;
    margin-left: auto;
    margin-top: 36px;
  }

  .page-faq .acc__btn {
    padding: 20px 16px 20px 20px;
  }

  .page-faq .acc__label {
    font-size: 17px;
  }

  .page-faq .acc__inner {
    padding: 0 40px 22px 58px;
    max-width: 62em;
  }

  .page-faq .faq-fb {
    margin-top: 34px;
    max-width: 46em;
  }

  .page-faq .faq-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-next {
    padding: 64px 0 88px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-step__no,
  .page-faq .faq-step__tick,
  .page-faq .acc__btn,
  .page-faq .acc__sign,
  .page-faq .faq-toc__list a,
  .page-faq .faq-next__card,
  .page-faq .faq-back {
    transition: none;
  }
}
<<<END>>>