.page-faq {
  --faq-rail: 264px;
  --faq-dot-a: var(--signal);
  --faq-dot-b: var(--signal-soft);
  --faq-dot-c: var(--mint);
  --faq-dot-d: var(--mist);
  --faq-dot-e: var(--lg-football);
  --faq-dot-f: var(--line-strong);
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding: 28px 0 36px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .faq-hero__kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--signal);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 6.4vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hero__meta {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-faq .faq-hero__meta .num {
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

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

.page-faq .faq-hero__fig {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

.page-faq .faq-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.86;
}

@media (min-width: 880px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1fr) 224px;
    align-items: end;
    gap: 56px;
    padding: 52px 0 48px;
  }
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding: 32px 0 72px;
}

@media (min-width: 1000px) {
  .page-faq .faq-wrap {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 64px;
    padding: 48px 0 96px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }
}

/* ---------- 场景索引 ---------- */

.page-faq .faq-rail {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-faq .faq-ring-wrap {
  position: relative;
  display: none;
  width: 168px;
  height: 168px;
  margin-bottom: 24px;
}

.page-faq .faq-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(
    var(--faq-dot-a) 0 12.7%,
    var(--panel) 12.7% 13.5%,
    var(--faq-dot-b) 13.5% 32.5%,
    var(--panel) 32.5% 33.3%,
    var(--faq-dot-c) 33.3% 58.7%,
    var(--panel) 58.7% 59.5%,
    var(--faq-dot-d) 59.5% 72.2%,
    var(--panel) 72.2% 73%,
    var(--faq-dot-e) 73% 85.7%,
    var(--panel) 85.7% 86.5%,
    var(--faq-dot-f) 86.5% 100%
  );
}

.page-faq .faq-ring::after {
  content: "";
  position: absolute;
  inset: 31%;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--line);
}

.page-faq .faq-ring-label {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  pointer-events: none;
}

.page-faq .faq-ring-num {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-ring-cap {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

@media (min-width: 1000px) {
  .page-faq .faq-ring-wrap {
    display: block;
  }
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-rail__item {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease),
    background-color var(--dur-fast) var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--signal);
  color: var(--paper);
  background: var(--panel);
}

.page-faq .faq-rail__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.page-faq .faq-rail__dot--a { background: var(--faq-dot-a); }
.page-faq .faq-rail__dot--b { background: var(--faq-dot-b); }
.page-faq .faq-rail__dot--c { background: var(--faq-dot-c); }
.page-faq .faq-rail__dot--d { background: var(--faq-dot-d); }
.page-faq .faq-rail__dot--e { background: var(--faq-dot-e); }
.page-faq .faq-rail__dot--f { background: var(--faq-dot-f); }

.page-faq .faq-rail__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
}

@media (min-width: 1000px) {
  .page-faq .faq-rail {
    border-top: 0;
    padding-top: 0;
  }

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

  .page-faq .faq-rail__link {
    white-space: normal;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 10px 0 10px 14px;
    background: none;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: var(--signal);
    background: none;
  }

  .page-faq .faq-rail__count {
    margin-left: auto;
  }
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  margin-bottom: 56px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 3.6vw, 27px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 流程图 ---------- */

.page-faq .faq-figure {
  margin: 22px 0 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.92;
}

.page-faq .faq-figure .fig-caption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-list {
  margin-top: 4px;
}

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

.page-faq .qa__head {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 16px;
  align-items: center;
  gap: 12px;
  padding: 17px 0;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .qa__head::marker {
  content: "";
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
  transition: color var(--dur-fast) var(--ease);
}

.page-faq .qa[open] .qa__no {
  color: var(--signal);
}

.page-faq .qa__q {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--paper);
  transition: color var(--dur-fast) var(--ease);
}

.page-faq .qa__head:hover .qa__q,
.page-faq .qa__head:focus-visible .qa__q {
  color: var(--signal-soft);
}

.page-faq .qa__sign {
  position: relative;
  justify-self: end;
  width: 12px;
  height: 12px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--mist);
  transition: transform var(--dur-fast) var(--ease),
    background-color var(--dur-fast) var(--ease);
}

.page-faq .qa__sign::before {
  left: 0;
  top: 5.5px;
  width: 12px;
  height: 1px;
}

.page-faq .qa__sign::after {
  top: 0;
  left: 5.5px;
  width: 1px;
  height: 12px;
}

.page-faq .qa[open] .qa__sign::before {
  background: var(--signal);
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
}

.page-faq .qa__body {
  padding: 0 0 22px;
  animation: faq-reveal var(--dur-mid) var(--ease);
}

.page-faq .qa__text {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .qa__text .num {
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-faq .qa__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  padding-bottom: 2px;
  font-size: 13px;
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 192, 0.35);
  transition: color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}

.page-faq .qa__link::after {
  content: "→";
  font-family: var(--font-mono);
}

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

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

@media (min-width: 600px) {
  .page-faq .qa__head {
    grid-template-columns: 40px minmax(0, 1fr) 18px;
    gap: 14px;
    padding: 19px 0;
  }

  .page-faq .qa__q {
    font-size: 16px;
  }

  .page-faq .qa__body {
    padding-left: 54px;
  }
}

/* ---------- 收尾 ---------- */

.page-faq .faq-tail {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 72px;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-tail__text {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

@media (min-width: 768px) {
  .page-faq .faq-tail {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: 96px;
  }
}

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

  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after,
  .page-faq .qa__no,
  .page-faq .qa__q,
  .page-faq .faq-rail__link {
    transition: none;
  }
}
<<<END>>>