/* ===== 问答中心 /questions/ ===== */
.page-faq {
  --faq-hair: rgba(11, 14, 20, 0.14);
  --faq-hair-soft: rgba(11, 14, 20, 0.08);
  --faq-tick: rgba(11, 14, 20, 0.28);
  --faq-answer: #2A3038;
  display: block;
  background: var(--paper);
  color: var(--ink);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(18px, 3vw, 30px) 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  padding: clamp(22px, 3.5vw, 40px) 0 clamp(28px, 4vw, 48px);
  border-bottom: 1px solid var(--faq-hair);
}

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

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 3.25rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.72;
  color: var(--faq-answer);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 28px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--faq-hair-soft);
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq .faq-hero__facts .num {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  line-height: 1;
  color: var(--blue);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--faq-hair);
  background: var(--space);
}

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

/* ---------- 主体三栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  padding-top: clamp(28px, 4vw, 50px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 6px 14px 6px 14px;
  border-left: 2px solid var(--faq-hair);
  font-size: 14px;
  line-height: 1.45;
  color: var(--steel);
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--blue);
  background: var(--mist);
  color: var(--blue);
  outline: none;
}

.page-faq .faq-index__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 右侧问答列表 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: clamp(30px, 4vw, 46px);
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: 24px;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 10px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--space);
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-group__num {
  flex: none;
  padding: 4px 7px;
  background: var(--neon);
  color: var(--space);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.06em;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
  transition: background-color 0.2s var(--ease);
}

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, rgba(0, 87, 184, 0.06), rgba(0, 87, 184, 0) 52%);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.9vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
  transition: color 0.18s var(--ease);
}

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

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

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

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

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

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 5px;
  border: 1px solid var(--faq-tick);
  background: #fff;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--space);
  transform: translate(-50%, -50%);
  transition: opacity 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-item__mark::before {
  width: 8px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 8px;
}

.page-faq .faq-item[open] .faq-item__mark {
  border-color: var(--blue);
  background: var(--blue);
}

.page-faq .faq-item[open] .faq-item__mark::before,
.page-faq .faq-item[open] .faq-item__mark::after {
  background: #fff;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
}

.page-faq .faq-item__a {
  max-width: 68ch;
  padding: 0 4px 20px;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--faq-answer);
}

.page-faq .faq-item__a p + p {
  margin-top: 10px;
}

.page-faq .faq-item__a .link-u {
  color: var(--blue);
}

.page-faq .faq-hl {
  padding: 1px 3px;
  background: var(--green-mist);
  color: var(--ink);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.94em;
}

.page-faq .faq-figure {
  margin: 22px 0 0;
  border: 1px solid var(--faq-hair);
  background: var(--space);
}

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

/* ---------- 右侧极窄刻度栏 ---------- */
.page-faq .faq-gauge {
  display: none;
}

/* ---------- 移动端索引横向滑动 ---------- */
@media (max-width: 999px) {
  .page-faq .faq-index__list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
  }

  .page-faq .faq-index__link {
    flex: none;
    padding: 8px 13px;
    border: 1px solid var(--faq-hair);
    background: #fff;
    white-space: nowrap;
  }

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

/* ---------- 桌面端布局 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: 226px minmax(0, 1fr) 46px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-index__link {
    padding: 9px 14px;
  }

  .page-faq .faq-gauge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    position: sticky;
    top: 24px;
    padding-top: 8px;
  }

  .page-faq .faq-gauge__label {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.24em;
    color: var(--muted);
  }

  .page-faq .faq-gauge__track {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  .page-faq .faq-gauge__tick {
    width: 2px;
    height: 24px;
    background: var(--faq-tick);
  }

  .page-faq .faq-gauge__tick:last-child {
    background: var(--neon);
    box-shadow: 0 0 0 3px rgba(0, 230, 118, 0.18);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__mark,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after {
    transition: none;
  }
}
<<<END>>>