.page-faq {
  --faq-index-w: 236px;
  --faq-gap: clamp(28px, 5vw, 76px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(18px, 3vw, 34px) 0;
}

.page-faq .faq-hero__inner {
  padding-bottom: clamp(22px, 3.6vw, 40px);
  border-bottom: 2px solid var(--c-steel);
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: clamp(1.95rem, 7.4vw, 4.3rem);
  line-height: 1.04;
  letter-spacing: 0.005em;
  color: var(--c-ice);
  text-wrap: balance;
}

.page-faq .faq-hero__title::after {
  content: "";
  display: block;
  width: clamp(64px, 20vw, 168px);
  height: 6px;
  margin-top: clamp(14px, 2vw, 22px);
  background: linear-gradient(90deg, var(--c-signal), var(--c-signal-2));
}

.page-faq .faq-hero__lead {
  max-width: 64ch;
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  color: var(--c-haze);
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.78;
}

.page-faq .faq-hero__stats {
  margin-top: clamp(22px, 3vw, 34px);
  list-style: none;
}

.page-faq .faq-hero__stats .stat {
  min-width: 0;
}

/* ---------- 主布局：左侧索引 / 右侧问答 ---------- */
.page-faq .faq-layout {
  display: block;
  padding-block: clamp(30px, 4.6vw, 62px) clamp(44px, 6vw, 84px);
}

.page-faq .faq-index {
  padding-bottom: 22px;
  margin-bottom: 26px;
  border-bottom: 2px solid var(--c-steel);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-haze);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 3px solid transparent;
  color: var(--c-haze);
  font-family: var(--font-body);
  font-size: 0.94rem;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--c-signal);
  border-left-color: var(--c-signal);
  background: rgba(0, 245, 200, 0.07);
}

.page-faq .faq-index__num {
  flex: none;
  font-size: 0.76rem;
  color: var(--c-signal);
}

/* ---------- 问答章节 ---------- */
.page-faq .faq-block {
  padding-block: clamp(26px, 3.6vw, 46px);
  border-top: 2px solid var(--c-steel);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-block__head {
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-faq .faq-block__num {
  margin: 0 0 8px;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: var(--c-medal);
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2.3rem);
  line-height: 1.2;
  color: var(--c-ice);
}

.page-faq .faq-block__lead {
  max-width: 58ch;
  margin: 12px 0 0;
  color: var(--c-haze);
  font-size: 1rem;
  line-height: 1.76;
}

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

.page-faq .faq-item {
  border-left: 3px solid transparent;
  border-bottom: 2px solid var(--c-steel);
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-q > .faq-item:first-child {
  border-top: 2px solid var(--c-steel);
}

.page-faq .faq-item[open] {
  border-left-color: var(--c-signal);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: clamp(14px, 2vw, 18px) clamp(14px, 2vw, 22px);
  list-style: none;
  cursor: pointer;
  color: var(--c-ice);
  font-family: var(--font-body);
  font-size: clamp(0.99rem, 1.7vw, 1.1rem);
  font-weight: 600;
  line-height: 1.55;
  transition: color 0.18s var(--ease), background-color 0.18s var(--ease);
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--c-signal);
  background: rgba(0, 245, 200, 0.06);
}

.page-faq .faq-item__sign {
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1.35;
  color: var(--c-signal);
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__sign {
  transform: rotate(45deg);
}

.page-faq .faq-item__a {
  max-width: 70ch;
  padding: 2px clamp(14px, 2vw, 22px) clamp(18px, 2.4vw, 26px);
  color: var(--c-haze);
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.82;
}

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

.page-faq .faq-item__a p + p {
  margin-top: 12px;
}

.page-faq .faq-item__a a {
  color: var(--c-signal);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.18s var(--ease);
}

.page-faq .faq-item__a a:hover {
  color: var(--c-signal-2);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(22px, 3.2vw, 36px) 0 0;
  max-width: 780px;
}

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

/* ---------- 客服信息 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 18px;
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(152deg, rgba(20, 36, 61, 0.92), rgba(5, 10, 18, 0.92));
  border: 2px solid var(--c-steel);
  box-shadow: var(--shadow-hard);
}

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

.page-faq .faq-contact__label {
  margin: 0 0 8px;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-haze);
}

.page-faq .faq-contact__value {
  margin: 0 0 12px;
  color: var(--c-ice);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-faq .faq-q--support {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-figure--narrow {
  max-width: 620px;
}

/* ---------- 返回顶部 ---------- */
.page-faq .faq-totop {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: clamp(26px, 4vw, 42px);
  padding-bottom: 4px;
  border-bottom: 2px solid var(--c-steel);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--c-haze);
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-totop:hover,
.page-faq .faq-totop:focus-visible {
  color: var(--c-signal);
  border-bottom-color: var(--c-signal);
}

/* ---------- 桌面：看台式分栏 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 26px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding-bottom: 0;
    margin-bottom: 0;
    border-bottom: 0;
    border-left: 2px solid var(--c-steel);
    padding-left: 4px;
  }

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

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