.page-faq {
  --faq-card-bg: linear-gradient(180deg, rgba(27, 31, 75, 0.42), rgba(14, 31, 58, 0.42));
  --faq-card-bg-open: linear-gradient(180deg, rgba(27, 31, 75, 0.62), rgba(10, 18, 36, 0.55));
  --faq-cyan-line: rgba(47, 227, 208, 0.55);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding: 22px 0 4px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 10px 0 0;
}

.page-faq .faq-hero__frame {
  position: relative;
  padding: 30px 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(720px 300px at 92% -12%, rgba(47, 227, 208, 0.13), transparent 72%),
    radial-gradient(520px 240px at -4% 110%, rgba(255, 138, 61, 0.09), transparent 70%),
    linear-gradient(155deg, var(--bg-mid) 0%, var(--bg-deep) 68%);
  overflow: hidden;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero__title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-faq .faq-stat {
  padding: 14px 13px;
  background: rgba(10, 18, 36, 0.72);
}

.page-faq .faq-stat__label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-stat__value {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--ink);
}

.page-faq .faq-stat__num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 26px;
  line-height: 1;
  color: var(--cyan);
}

/* ---------- 索引区块 ---------- */
.page-faq .faq-guide {
  padding-top: 52px;
}

.page-faq .faq-guide .section-head__note {
  max-width: 68ch;
}

.page-faq .faq-shot {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-mid);
  overflow: hidden;
}

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

.page-faq .faq-shot .media__caption {
  padding: 11px 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-shot--inline {
  margin: 20px 0 0;
}

/* ---------- 索引树 + 问答双栏 ---------- */
.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 34px;
}

.page-faq .faq-tree__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-tree__list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tree__link {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(14, 31, 58, 0.5);
  color: var(--ink);
  text-decoration: none;
  transition: border-color 150ms ease, background 150ms ease, transform 150ms ease;
}

.page-faq .faq-tree__link:hover,
.page-faq .faq-tree__link:focus-visible {
  border-color: var(--faq-cyan-line);
  border-left-color: var(--cyan);
  background: rgba(47, 227, 208, 0.08);
  transform: translateX(3px);
}

.page-faq .faq-tree__no {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 13px;
  color: var(--cyan);
}

.page-faq .faq-tree__name {
  font-size: 14px;
  font-weight: 600;
}

.page-faq .faq-tree__count {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--muted);
}

.page-faq .faq-tree__hint {
  margin: 14px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 110px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 34px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.page-faq .faq-group__no {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 24px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 3.2vw, 26px);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__count {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--muted);
}

.page-faq .faq-group:nth-of-type(2) .faq-group__no {
  color: var(--amber);
}

.page-faq .faq-group:nth-of-type(3) .faq-group__no {
  color: var(--cyan-soft);
}

.page-faq .faq-group:nth-of-type(4) .faq-group__no {
  color: var(--orange);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-q {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--faq-card-bg);
  overflow: hidden;
  transition: border-color 150ms ease, background 150ms ease;
}

.page-faq .faq-q + .faq-q {
  margin-top: 8px;
}

.page-faq .faq-q[open] {
  border-color: var(--faq-cyan-line);
  background: var(--faq-card-bg-open);
}

.page-faq .faq-q__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 15px 46px 15px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-faq .faq-q__q::after {
  content: "";
  position: absolute;
  right: 19px;
  top: 22px;
  width: 7px;
  height: 7px;
  border-right: 1.6px solid var(--cyan);
  border-bottom: 1.6px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 160ms ease;
}

.page-faq .faq-q[open] .faq-q__q::after {
  transform: rotate(-135deg);
  top: 25px;
}

.page-faq .faq-q__q:hover {
  background: rgba(47, 227, 208, 0.05);
}

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

.page-faq .faq-q__mark {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 12px;
  line-height: 20px;
  color: var(--cyan);
}

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

.page-faq .faq-q__a {
  padding: 14px 18px 17px 39px;
  border-top: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

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

.page-faq .faq-q__a p + p {
  margin-top: 0.9em;
}

.page-faq .faq-q__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 208, 0.4);
}

.page-faq .faq-q__a a:hover,
.page-faq .faq-q__a a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 联络 ---------- */
.page-faq .faq-contact {
  padding-bottom: 72px;
}

.page-faq .faq-contact__panel {
  display: grid;
  gap: 28px;
  padding: 28px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(560px 260px at 100% 0%, rgba(255, 138, 61, 0.12), transparent 70%),
    linear-gradient(160deg, var(--bg-indigo) 0%, var(--bg-deep) 78%);
}

.page-faq .faq-contact__title {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.6vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .faq-contact__note {
  margin: 0 0 12px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-contact__tip {
  margin: 0 0 20px;
  padding: 12px 14px;
  border-left: 2px solid var(--orange);
  background: rgba(255, 138, 61, 0.07);
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink);
}

.page-faq .faq-contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
}

.page-faq .faq-contact__channels {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-faq .faq-channel {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(10, 18, 36, 0.8);
}

.page-faq .faq-channel__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-channel__value {
  font-size: 15px;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-channel__value--num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: 0.01em;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero__frame {
    padding: 44px 38px 34px;
  }

  .page-faq .faq-contact__panel {
    padding: 40px 34px;
    gap: 34px;
  }

  .page-faq .faq-q__q {
    font-size: 16px;
    padding: 17px 50px 17px 18px;
  }

  .page-faq .faq-q__a {
    padding: 16px 22px 20px 46px;
  }

  .page-faq .faq-tree__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 330px);
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-tree {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-tree__list {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-faq .faq-contact__panel {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-guide {
    padding-top: 66px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__frame {
    padding: 52px 46px 42px;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 288px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tree__link,
  .page-faq .faq-q,
  .page-faq .faq-q__q::after {
    transition: none;
  }

  .page-faq .faq-tree__link:hover,
  .page-faq .faq-tree__link:focus-visible {
    transform: none;
  }
}
<<<END>>>