.page-faq {
  --faq-idx-w: 42px;
  --faq-rail: 236px;
  --faq-panel-pad: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding-top: calc(var(--header-h) + clamp(28px, 6vw, 64px));
  overflow: hidden;
}

.page-faq .faq-hero__inner {
  position: relative;
  padding-bottom: clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero__crumb {
  margin-bottom: clamp(16px, 3vw, 28px);
  color: var(--brand-soft);
}

.page-faq .faq-hero__crumb a {
  color: var(--brand-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 211, 238, .4);
}

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

.page-faq .faq-hero__eyebrow {
  color: var(--brand-soft);
  margin: 0 0 12px;
}

.page-faq .faq-hero__title {
  margin: 0 0 clamp(16px, 3vw, 26px);
  color: var(--paper);
  max-width: 14em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 40em;
  color: rgba(246, 241, 231, .84);
}

.page-faq .faq-hero__note {
  display: none;
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid rgba(127, 211, 238, .32);
  border-radius: var(--pill);
  font-size: 13px;
  color: rgba(246, 241, 231, .82);
}

.page-faq .faq-hero__facts .num-mono {
  font-size: 15px;
  font-weight: 700;
  color: var(--pulse);
}

.page-faq .faq-hero__band {
  position: relative;
  margin: 0;
  border-top: 4px solid transparent;
  border-image: linear-gradient(90deg, var(--accent) 0%, var(--brand) 46%, var(--pulse) 62%, var(--ink) 62%) 1;
}

.page-faq .faq-hero__band img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  clip-path: polygon(0 8%, 100% 0, 100% 100%, 0 100%);
}

/* ---------- 主体分区 ---------- */
.page-faq .faq-body {
  background: var(--paper);
  color: var(--text);
  padding: clamp(36px, 6vw, 84px) 0 clamp(48px, 7vw, 96px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 52px);
  align-items: start;
}

/* ---------- 分类导航（移动端横滚胶囊 / 桌面纵向） ---------- */
.page-faq .faq-aside {
  position: sticky;
  top: calc(var(--header-h-scrolled) + 6px);
  z-index: 6;
  background: var(--paper);
  padding-bottom: 8px;
  margin-inline: calc(var(--gutter) * -1);
  padding-inline: var(--gutter);
}

.page-faq .faq-toc {
  position: static;
}

.page-faq .faq-toc__label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--muted);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 2px 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-toc__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 9px 16px;
  white-space: nowrap;
  border: 1px solid var(--rule);
  border-radius: var(--pill);
  background: var(--paper-raise);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 160ms var(--ease-out), background-color 160ms var(--ease-out), color 160ms var(--ease-out);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-color: var(--brand);
  color: var(--ink);
}

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

.page-faq .faq-toc__idx {
  font-size: 11px;
  color: var(--muted);
}

.page-faq .faq-toc__link[aria-current="true"],
.page-faq .faq-toc__link[aria-current="page"] {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.page-faq .faq-toc__link[aria-current="true"] .faq-toc__idx,
.page-faq .faq-toc__link[aria-current="page"] .faq-toc__idx {
  color: var(--pulse);
}

.page-faq .faq-toc__link[aria-current="true"]::before,
.page-faq .faq-toc__link[aria-current="page"]::before {
  content: "";
  width: 7px;
  height: 7px;
  margin-right: 2px;
  border-radius: 50%;
  background: var(--pulse);
  box-shadow: 0 0 0 4px rgba(180, 255, 87, .18);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: clamp(38px, 6vw, 76px);
  scroll-margin-top: 118px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  margin-bottom: 6px;
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-group__head .section-title {
  margin: 0;
}

.page-faq .faq-group__count {
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

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

.page-faq .faq-q {
  display: grid;
  grid-template-columns: var(--faq-idx-w) 1fr 24px;
  align-items: start;
  gap: 12px;
  min-height: 44px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .faq-idx {
  font-size: 13px;
  color: var(--brand);
  padding-top: 5px;
}

.page-faq .faq-qtext {
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.01em;
}

.page-faq .faq-mark {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 4px;
  justify-self: end;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--ink);
  border-radius: 2px;
}

.page-faq .faq-mark::before {
  left: 0;
  top: 10px;
  width: 22px;
  height: 2px;
}

.page-faq .faq-mark::after {
  left: 10px;
  top: 0;
  width: 2px;
  height: 22px;
  transition: transform 160ms var(--ease-out), opacity 160ms var(--ease-out);
}

.page-faq .faq-q:hover .faq-mark::before,
.page-faq .faq-q:hover .faq-mark::after {
  background: var(--accent);
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item[open] .faq-idx {
  color: var(--accent);
}

.page-faq .faq-a {
  padding: 0 0 24px;
  padding-left: calc(var(--faq-idx-w) + 12px);
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-a a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--brand);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  text-decoration-color: var(--accent);
}

.page-faq .faq-item[open] .faq-a {
  animation: faq-open 320ms var(--ease-out) both;
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 更新节奏图与时间条 ---------- */
.page-faq .faq-rhythm {
  margin: 0 0 clamp(18px, 3vw, 28px);
}

.page-faq .faq-rhythm img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 620px;
  border-radius: var(--r-md);
  border: 1px solid var(--rule);
}

.page-faq .faq-stamp {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 clamp(14px, 2vw, 20px);
  padding: 12px 18px;
  border: 1px solid var(--rule);
  border-left: 4px solid var(--brand);
  border-radius: var(--r-sm);
  background: var(--paper-raise);
  font-size: 14px;
  color: var(--muted);
}

.page-faq .faq-stamp__time {
  padding: 3px 10px;
  border-radius: var(--pill);
  background: var(--ink);
  color: var(--pulse);
  font-size: 12px;
  letter-spacing: .12em;
}

/* ---------- 出口 ---------- */
.page-faq .faq-exit {
  position: relative;
  overflow: hidden;
  margin-top: clamp(12px, 3vw, 28px);
  padding: clamp(26px, 4vw, 48px);
  border-radius: var(--r-lg);
  background: var(--ink);
  color: var(--paper);
}

.page-faq .faq-exit::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -70px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(23, 162, 214, .34), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-exit__eyebrow {
  color: var(--accent);
  margin: 0 0 10px;
}

.page-faq .faq-exit__title {
  margin: 0 0 14px;
  color: var(--paper);
  max-width: 20em;
}

.page-faq .faq-exit__text {
  margin: 0 0 20px;
  max-width: 36em;
  color: rgba(246, 241, 231, .82);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .faq-exit__tags {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-exit__tags li {
  padding: 8px 15px;
  border: 1px solid rgba(127, 211, 238, .34);
  border-radius: var(--pill);
  font-size: 13px;
  color: var(--brand-soft);
}

.page-faq .faq-exit__action {
  margin: 0;
  position: relative;
  z-index: 1;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__facts li {
    font-size: 14px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-aside {
    position: static;
    background: transparent;
    margin-inline: 0;
    padding-inline: 0;
  }

  .page-faq .faq-toc__list {
    position: sticky;
    top: calc(var(--header-h-scrolled) + 28px);
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    overflow: visible;
    padding: 0;
    border-left: 2px solid var(--rule);
  }

  .page-faq .faq-toc__link {
    justify-content: flex-start;
    border-color: transparent;
    border-radius: var(--r-sm);
    background: transparent;
    padding: 10px 14px;
  }

  .page-faq .faq-toc__link[aria-current="true"],
  .page-faq .faq-toc__link[aria-current="page"] {
    border-color: var(--ink);
  }

  .page-faq .faq-hero__note {
    display: block;
    position: absolute;
    right: 0;
    top: calc(var(--header-h) + 90px);
    writing-mode: vertical-rl;
    font-size: 12px;
    letter-spacing: .28em;
    color: var(--brand-soft);
    margin: 0;
  }

  .page-faq .faq-hero__title {
    max-width: 11em;
  }

  .page-faq .faq-q {
    padding: 22px 0;
  }

  .page-faq .faq-group__head {
    margin-bottom: 10px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__lede {
    font-size: 19px;
  }
}

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

  .page-faq .faq-mark::after,
  .page-faq .faq-toc__link {
    transition: none;
  }
}
<<<END>>>