.page-faq {
  --faq-col: 170px;
  --faq-body-max: 760px;
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-mast {
  padding-top: 4px;
}

.page-faq .faq-mast__kicker {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.page-faq .faq-mast__title {
  margin: 0;
  font-size: clamp(27px, 6.6vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.03em;
  font-weight: 400;
  max-width: 16em;
}

.page-faq .faq-mast__lede {
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--edge);
  max-width: 38em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-mast__links {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 2;
  color: var(--muted);
}

.page-faq .faq-mast__links a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--edge);
  padding-bottom: 1px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-mast__links a:hover,
.page-faq .faq-mast__links a:focus-visible {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
  outline: none;
}

/* ---------- 顶部数字条 ---------- */
.page-faq .faq-stats {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.page-faq .faq-stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-stats__num {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--text);
}

.page-faq .faq-stats__unit {
  font-size: 14px;
  font-weight: 400;
  color: var(--muted);
  margin-left: 2px;
}

.page-faq .faq-stats__cap {
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  margin-top: 44px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: 12px;
  line-height: 1.4;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-rail__idx {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--yellow);
  color: var(--yellow);
  outline: none;
}

.page-faq .faq-rail__note {
  display: none;
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  line-height: 1.8;
  color: var(--muted);
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 24px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 54px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__idx {
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-group__idx::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  border-radius: 1px;
  background: currentColor;
  vertical-align: middle;
}

.page-faq .faq-group--caliber .faq-group__idx { color: var(--yellow); }
.page-faq .faq-group--time .faq-group__idx { color: var(--red); }
.page-faq .faq-group--client .faq-group__idx { color: var(--blue); }
.page-faq .faq-group--updates .faq-group__idx { color: var(--orange); }
.page-faq .faq-group--contact .faq-group__idx { color: var(--muted); }

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 4.4vw, 27px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.page-faq .faq-group__note {
  margin: 12px 0 4px;
  max-width: 34em;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-group__note a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--edge);
}

.page-faq .faq-group__note a:hover,
.page-faq .faq-group__note a:focus-visible {
  color: var(--yellow);
  border-bottom-color: var(--yellow);
  outline: none;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 6px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.02);
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-list {
  margin-top: 8px;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  transition: color 0.2s ease;
}

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

.page-faq .faq-item__mark {
  flex: none;
  width: 12px;
  height: 1px;
  margin-top: 0.72em;
  background: var(--line);
  transition: width 0.22s ease, background-color 0.22s ease;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  padding-left: 14px;
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1;
  color: var(--muted);
  transition: color 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--red);
}

.page-faq .faq-item__q:hover .faq-item__mark,
.page-faq .faq-item__q:focus-visible .faq-item__mark {
  width: 20px;
  background: var(--edge);
}

.page-faq .faq-item__q:focus-visible {
  outline: none;
  color: var(--yellow);
}

.page-faq .faq-item__a {
  padding: 0 0 20px;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 36em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-fade 0.22s ease-out;
}

@keyframes faq-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 尾部横条 ---------- */
.page-faq .faq-band {
  margin-top: 56px;
  padding: 22px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
}

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

.page-faq .faq-band__text {
  margin: 0;
  max-width: 40em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .faq-band__text a {
  color: var(--yellow);
  text-decoration: none;
  border-bottom: 1px solid var(--edge);
}

.page-faq .faq-band__text a:hover,
.page-faq .faq-band__text a:focus-visible {
  border-bottom-color: var(--yellow);
  outline: none;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-stats li {
    padding: 18px 16px;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-stats li:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-faq .faq-stats li:last-child {
    padding-right: 0;
  }

  .page-faq .faq-figure {
    margin: 28px 0 10px;
  }
}

/* ---------- 桌面：左分类轨道 + 右问答 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-col) minmax(0, 1fr);
    gap: 52px;
    margin-top: 56px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 28px;
    align-self: start;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-faq .faq-rail__link {
    padding: 11px 0 11px 14px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    font-size: 13px;
    gap: 10px;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: var(--yellow);
  }

  .page-faq .faq-rail__note {
    display: block;
  }

  .page-faq .faq-body {
    max-width: var(--faq-body-max);
  }

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

  .page-faq .faq-item__q {
    font-size: 16px;
    padding: 19px 0;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-band {
    padding: 26px 32px 28px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__mark,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .faq-rail__link {
    transition: none;
  }
}