.page-faq {
  --faq-rule: var(--ice-mist);
  --faq-quiet: var(--text-soft);
  --faq-sticky: calc(var(--topbar-h) + 28px);
  background: var(--paper);
  color: var(--plateau-ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(24px, 5vw, 52px) clamp(18px, 3.5vw, 32px);
}

.page-faq .faq-hero .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-2xs);
  letter-spacing: .08em;
  color: var(--faq-quiet);
  margin-bottom: clamp(20px, 4vw, 40px);
}

.page-faq .faq-hero .crumbs a {
  color: var(--lake-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-hero .crumbs a:hover,
.page-faq .faq-hero .crumbs a:focus-visible {
  border-bottom-color: var(--lake-glow);
}

.page-faq .faq-hero .eyebrow {
  color: var(--dusk-orchid);
  margin: 0 0 12px;
}

.page-faq .faq-hero .display {
  margin: 0;
  max-width: 22ch;
  color: var(--plateau-ink);
}

.page-faq .faq-hero .lede {
  margin: clamp(16px, 3vw, 26px) 0 0;
  max-width: 62ch;
  color: var(--faq-quiet);
}

/* ---------- 顶部检索带 ---------- */
.page-faq .faq-tools {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: linear-gradient(118deg, var(--lake-deep) 0%, var(--dusk-purple) 100%);
  color: var(--ice-white);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), 0 100%);
  padding-block: clamp(24px, 4vw, 40px) calc(clamp(30px, 5vw, 52px) + 22px);
}

.page-faq .faq-tools__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .34;
  mix-blend-mode: screen;
}

.page-faq .faq-tools__inner {
  position: relative;
}

.page-faq .faq-tools__title {
  margin: 0 0 12px;
  font-size: var(--fs-2xs);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--amber-signal);
}

.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 10px;
  border: var(--bw) solid rgba(207, 227, 240, .55);
  background: rgba(10, 27, 38, .5);
  padding: 2px 14px;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--lake-glow);
  box-shadow: 0 0 0 3px rgba(47, 184, 224, .3);
}

.page-faq .faq-search__icon {
  flex: none;
  color: var(--lake-glow);
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--ice-white);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .02em;
  padding: 14px 0;
}

.page-faq .faq-search__input::placeholder {
  color: rgba(207, 227, 240, .68);
}

.page-faq .faq-search__input::-webkit-search-cancel-button {
  filter: invert(1) opacity(.6);
}

.page-faq .faq-topics {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-chip {
  display: inline-block;
  padding: 7px 13px;
  border: var(--bw) solid rgba(207, 227, 240, .5);
  color: var(--ice-white);
  font-size: var(--fs-2xs);
  letter-spacing: .05em;
  text-decoration: none;
  transition: border-color .18s var(--ease), color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--amber-signal);
  color: var(--amber-signal);
  background: rgba(255, 181, 61, .08);
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  padding-block: clamp(34px, 6vw, 64px) clamp(56px, 9vw, 110px);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 6vw, 66px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: var(--bw) solid var(--plateau-ink);
}

.page-faq .faq-group__num {
  flex: none;
  font-size: var(--fs-sm);
  letter-spacing: .04em;
  color: var(--dusk-orchid);
}

.page-faq .faq-group__title {
  margin: 0;
  min-width: 0;
  font-size: var(--fs-xl);
  font-weight: 600;
  letter-spacing: .05em;
  line-height: 1.3;
}

.page-faq .faq-group__note {
  margin: 12px 0 16px;
  font-size: var(--fs-2xs);
  letter-spacing: .04em;
  color: var(--faq-quiet);
}

/* ---------- 手风琴 ---------- */
.page-faq .acc {
  border: var(--bw) solid var(--plateau-ink);
  border-top: 0;
  background: var(--paper);
}

.page-faq .acc-item {
  border-left: 4px solid transparent;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

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

.page-faq .acc-item:has(.acc-trigger[aria-expanded="true"]),
.page-faq .acc-item[data-open] {
  border-left-color: var(--dusk-orchid);
  background: linear-gradient(90deg, rgba(124, 90, 209, .06), rgba(255, 255, 255, 0) 42%);
}

.page-faq .acc-trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  text-align: left;
  padding: 16px clamp(14px, 2.4vw, 24px);
  background: transparent;
  border: 0;
  font-family: inherit;
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.6;
  color: var(--plateau-ink);
  cursor: pointer;
}

.page-faq .acc-trigger:focus-visible {
  outline: 2px solid var(--lake-blue);
  outline-offset: -2px;
}

.page-faq .acc-num {
  flex: none;
  font-size: var(--fs-2xs);
  letter-spacing: .06em;
  color: var(--lake-blue);
  padding-top: 3px;
}

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

.page-faq .acc-body {
  padding: 0 clamp(14px, 2.4vw, 24px) 22px calc(clamp(14px, 2.4vw, 24px) + 34px);
  font-size: var(--fs-xs);
  line-height: 1.85;
  color: var(--faq-quiet);
}

.page-faq .acc-body p {
  margin: 0;
}

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

.page-faq .faq-go {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  margin-left: 2px;
  color: var(--lake-blue);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--lake-glow);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-go::after {
  content: "→";
  font-family: var(--font-mono);
  font-size: .9em;
}

.page-faq .faq-go:hover,
.page-faq .faq-go:focus-visible {
  color: var(--lake-deep);
  border-bottom-color: var(--dusk-orchid);
}

/* ---------- 反馈配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 18px;
  border: var(--bw) solid var(--plateau-ink);
  box-shadow: var(--shadow-hard);
}

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

.page-faq .faq-figure .media-caption {
  display: block;
  padding: 10px 14px;
  border-top: var(--bw) solid var(--plateau-ink);
  background: var(--paper-dim);
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  letter-spacing: .06em;
  color: var(--lake-deep);
}

/* ---------- 联系块 ---------- */
.page-faq .faq-group--contact .faq-group__head {
  border-bottom-color: var(--dusk-purple);
}

.page-faq .faq-contact {
  margin-top: 18px;
  border-left: 6px solid var(--amber-signal);
  background: linear-gradient(135deg, var(--lake-deep) 0%, var(--dusk-purple) 100%);
  color: var(--ice-white);
  padding: clamp(22px, 4vw, 38px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), 0 100%);
}

.page-faq .faq-contact__lead {
  margin: 0 0 22px;
  max-width: 56ch;
  font-size: var(--fs-sm);
  line-height: 1.8;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-contact__item {
  display: grid;
  gap: 4px;
  padding: 14px 0 0;
  border-top: 1px solid rgba(207, 227, 240, .3);
}

.page-faq .faq-contact__key {
  font-size: var(--fs-2xs);
  letter-spacing: .16em;
  color: var(--amber-signal);
}

.page-faq .faq-contact__val {
  font-size: var(--fs-sm);
  font-weight: 600;
  word-break: break-word;
  color: var(--ice-white);
}

.page-faq .faq-contact__val .faq-go {
  color: var(--ice-white);
  border-bottom-color: var(--amber-signal);
}

.page-faq .faq-contact__val .faq-go:hover,
.page-faq .faq-contact__val .faq-go:focus-visible {
  color: var(--amber-signal);
}

.page-faq .faq-contact__hint {
  font-size: var(--fs-2xs);
  line-height: 1.75;
  color: rgba(207, 227, 240, .82);
}

.page-faq .faq-contact__foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(207, 227, 240, .3);
  font-size: var(--fs-2xs);
  line-height: 1.8;
  color: rgba(245, 250, 255, .86);
}

/* ---------- 右侧索引 ---------- */
.page-faq .faq-rail {
  border: var(--bw) solid var(--plateau-ink);
  background: var(--paper-dim);
}

.page-faq .faq-rail__title {
  margin: 0;
  padding: 10px 14px;
  border-bottom: var(--bw) solid var(--plateau-ink);
  font-family: var(--font-mono);
  font-size: var(--fs-2xs);
  letter-spacing: .16em;
  color: var(--lake-deep);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 8px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 11px;
  border: var(--bw) solid transparent;
  color: var(--plateau-ink);
  font-size: var(--fs-2xs);
  letter-spacing: .04em;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .18s var(--ease), background-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--lake-blue);
  background: var(--paper);
  color: var(--lake-deep);
}

.page-faq .faq-rail__num {
  color: var(--dusk-orchid);
  letter-spacing: .02em;
}

/* ---------- 窄屏 ---------- */
@media (max-width: 560px) {
  .page-faq .faq-hero .display {
    max-width: none;
  }

  .page-faq .acc-body {
    padding-left: clamp(14px, 2.4vw, 24px);
  }

  .page-faq .faq-contact {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), 0 100%);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 236px;
    align-items: start;
    gap: clamp(36px, 4.5vw, 64px);
  }

  .page-faq .faq-body {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
  }

  .page-faq .faq-rail {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    overflow: visible;
  }

  .page-faq .faq-rail__link {
    white-space: normal;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-tools__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 18px 32px;
  }

  .page-faq .faq-tools__title {
    grid-column: 1 / -1;
  }

  .page-faq .faq-topics {
    margin-top: 0;
    justify-content: flex-end;
  }
}
<<<END>>>