.page-faq {
  --faq-rail: 214px;
  --faq-anchor: 118px;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 46px) 0 clamp(30px, 5vw, 58px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-coral);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 640px;
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(30px, 6.2vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.005em;
  color: var(--c-moon);
}

.page-faq .faq-hero__lead {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 46ch;
  color: var(--c-text-dim);
  font-size: clamp(0.94rem, 1.6vw, 1.02rem);
  line-height: 1.85;
}

.page-faq .faq-hero__note {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--c-aurora);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--c-foam);
}

.page-faq .faq-hero__media {
  align-self: stretch;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
  padding-bottom: clamp(34px, 5vw, 66px);
}

/* ---------- 左侧时间轴索引 ---------- */
.page-faq .faq-toc {
  align-self: start;
}

.page-faq .faq-toc__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-sand);
}

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

.page-faq .faq-toc__list::-webkit-scrollbar {
  height: 3px;
}

.page-faq .faq-toc__list::-webkit-scrollbar-thumb {
  background: var(--c-glass);
}

.page-faq .toc-link {
  display: block;
  white-space: nowrap;
  padding: 8px 13px;
  border: 1px solid var(--line-soft);
  background: rgba(20, 48, 74, 0.42);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--c-foam);
  text-decoration: none;
  transition: color var(--t), border-color var(--t), background var(--t);
}

.page-faq .toc-link:hover {
  color: var(--c-moon);
  border-color: var(--c-glass);
}

.page-faq .toc-link.is-active {
  color: var(--c-coral);
  border-color: var(--c-coral);
  background: rgba(255, 107, 74, 0.1);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: clamp(24px, 3.4vw, 38px) 0;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: var(--faq-anchor);
}

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

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: baseline;
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-faq .faq-group__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2.05rem);
  font-weight: 400;
  line-height: 1;
  color: var(--c-sand);
  opacity: 0.88;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: clamp(20px, 2.8vw, 29px);
  letter-spacing: 0.02em;
  color: var(--c-moon);
}

.page-faq .faq-group__lead {
  grid-column: 2;
  margin: 0;
  max-width: 52ch;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--c-foam);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
  background: transparent;
}

.page-faq .faq-item .fold__summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 16px 42px 16px 0;
  border-left: 2px solid transparent;
  font-family: var(--font-body);
  font-size: clamp(0.94rem, 1.7vw, 1.02rem);
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-moon);
  transition: color var(--t), border-color var(--t), padding-left var(--t), background var(--t);
}

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

.page-faq .faq-item .fold__summary::after {
  content: "+";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--c-aurora);
  transition: color var(--t);
}

.page-faq .faq-item .fold__summary:hover {
  color: var(--c-moon);
  border-left-color: var(--c-glass);
  padding-left: 12px;
  background: rgba(20, 48, 74, 0.28);
}

.page-faq .faq-item .fold__summary:focus-visible {
  outline: 2px solid var(--c-coral);
  outline-offset: 2px;
}

.page-faq .faq-item[open] .fold__summary {
  border-left-color: var(--c-coral);
  padding-left: 14px;
}

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

.page-faq .faq-item .fold__body {
  max-width: 62ch;
  margin: 0;
  padding: 2px 42px 20px 14px;
  color: var(--c-text-dim);
  font-size: 0.9rem;
  line-height: 1.88;
}

.page-faq .faq-item .fold__body p {
  margin: 0;
}

.page-faq .faq-item .fold__body a {
  color: var(--c-aurora);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, 0.42);
  transition: color var(--t), border-color var(--t);
}

.page-faq .faq-item .fold__body a:hover {
  color: var(--c-moon);
  border-bottom-color: var(--c-moon);
}

/* ---------- 中段指标条 ---------- */
.page-faq .faq-band {
  margin: clamp(22px, 3.4vw, 36px) 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  padding: clamp(14px, 2.2vw, 22px) 0;
}

.page-faq .faq-band .data-cell__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--c-foam);
}

.page-faq .faq-band .data-cell__value {
  font-size: clamp(1.3rem, 3vw, 1.85rem);
}

/* ---------- 中部插图 ---------- */
.page-faq .faq-media {
  margin: 0 0 clamp(18px, 2.6vw, 28px);
}

/* ---------- 末尾行动区 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(30px, 5vw, 54px);
  padding: clamp(24px, 4vw, 44px);
  background: linear-gradient(135deg, var(--c-layer) 0%, var(--c-abyss) 74%);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: clamp(18px, 2.8vw, 30px);
}

.page-faq .faq-cta__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: clamp(20px, 2.9vw, 30px);
  letter-spacing: 0.02em;
  color: var(--c-moon);
}

.page-faq .faq-cta__desc {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--c-text-dim);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: end;
}

/* ---------- 桌面 ---------- */
@media (min-width: 920px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: var(--faq-anchor);
  }

  .page-faq .faq-toc__label {
    padding-left: 16px;
  }

  .page-faq .faq-toc__list {
    display: block;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--line-soft);
  }

  .page-faq .toc-link {
    white-space: normal;
    padding: 8px 12px 8px 16px;
    border: 0;
    border-left: 2px solid transparent;
    margin-left: -1px;
    background: transparent;
    font-size: 0.76rem;
    line-height: 1.5;
  }

  .page-faq .toc-link:hover {
    background: transparent;
    border-left-color: var(--c-glass);
  }

  .page-faq .toc-link.is-active {
    background: transparent;
    border-left-color: var(--c-coral);
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
}
<<<END>>>