.page-faq {
  --faq-aside-w: 200px;
  --faq-rule: rgba(31, 74, 62, 0.7);
  --faq-q-size: 16px;
  --faq-a-size: 15px;
  --faq-leading: 1.72;
  font-family: var(--ab-font);
  color: var(--ab-text);
}

.page-faq [id] {
  scroll-margin-top: calc(var(--ab-top-h, 56px) + 24px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5vw, 52px) 0 clamp(36px, 6vw, 72px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(59, 232, 168, 0.12), transparent 58%),
    linear-gradient(180deg, var(--ab-surface), var(--ab-ink) 78%);
  border-bottom: 1px solid var(--ab-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 46%;
  height: 140%;
  background: linear-gradient(200deg, rgba(22, 48, 42, 0.9), rgba(8, 17, 15, 0) 70%);
  clip-path: polygon(28% 0, 100% 0, 72% 100%, 0 100%);
  transform: rotate(8deg);
  pointer-events: none;
}

.page-faq .faq-hero > .ab-container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 16px;
  font-size: clamp(1.75rem, 4.4vw, 3rem);
  font-weight: 300;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--ab-text);
}

.page-faq .faq-hero h1 strong {
  font-weight: 800;
  color: var(--ab-accent);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-hero__facts > div {
  min-width: 0;
}

.page-faq .faq-hero__facts dt {
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--ab-muted);
}

.page-faq .faq-hero__facts dd {
  margin: 5px 0 0;
  font-family: var(--ab-mono);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  color: var(--ab-text);
}

.page-faq .faq-hero__media {
  margin: 0;
  padding: 8px;
  background: var(--ab-surface);
  border: 1px solid var(--ab-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.06) brightness(0.9);
}

.page-faq .faq-hero__media figcaption {
  padding: 8px 4px 2px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--ab-muted);
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }
}

/* ---------- 两栏骨架 ---------- */

.page-faq .faq-body {
  padding: clamp(28px, 5vw, 56px) 0 clamp(36px, 5vw, 64px);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(22px, 4vw, 48px);
}

.page-faq .faq-aside {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-aside__label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--ab-muted);
}

.page-faq .faq-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-index__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid var(--ab-line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--ab-muted);
  text-decoration: none;
  transition: color 180ms var(--ab-ease), border-color 180ms var(--ab-ease);
}

.page-faq .faq-index__num {
  font-family: var(--ab-mono);
  font-size: 11px;
  color: var(--ab-line);
  letter-spacing: 0.06em;
}

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

.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num {
  color: var(--ab-accent);
}

.page-faq .faq-aside__btn {
  width: 100%;
  margin-top: 18px;
  justify-content: center;
}

@media (min-width: 980px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-aside-w) minmax(0, 1fr);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: calc(var(--ab-top-h, 56px) + 24px);
    align-self: start;
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-faq .faq-index {
    display: grid;
    gap: 2px;
    padding-left: 14px;
    border-left: 1px solid var(--ab-line);
  }

  .page-faq .faq-index__link {
    padding: 9px 0 9px 12px;
    border: 0;
    border-radius: 0;
    font-size: 14px;
  }

  .page-faq .faq-index__link::before {
    content: "";
    position: absolute;
    left: -15px;
    top: 50%;
    width: 0;
    height: 2px;
    background: var(--ab-accent);
    transform: translateY(-50%);
    transition: width 220ms var(--ab-ease);
  }

  .page-faq .faq-index__link:hover::before,
  .page-faq .faq-index__link:focus-visible::before {
    width: 12px;
  }

  .page-faq .faq-aside__btn {
    margin-top: 22px;
  }
}

/* ---------- 分组与问答 ---------- */

.page-faq .faq-group {
  margin-bottom: clamp(44px, 6vw, 78px);
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  display: block;
  height: 1px;
  margin: 0 0 clamp(26px, 3.4vw, 40px);
  background: linear-gradient(90deg, var(--ab-amber) 0 46px, var(--ab-line) 46px, transparent 100%);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 6px;
  align-items: baseline;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ab-line);
  margin-bottom: 6px;
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  align-self: start;
  font-family: var(--ab-mono);
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--ab-line);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ab-text);
}

.page-faq .faq-group__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ab-muted);
}

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

.page-faq .faq-flow .faq-group:nth-of-type(1) {
  --faq-q-size: 16px;
  --faq-a-size: 15.5px;
  --faq-leading: 1.78;
}

.page-faq .faq-flow .faq-group:nth-of-type(2) {
  --faq-q-size: 15.6px;
  --faq-a-size: 15.1px;
  --faq-leading: 1.74;
}

.page-faq .faq-flow .faq-group:nth-of-type(3) {
  --faq-q-size: 15.2px;
  --faq-a-size: 14.8px;
  --faq-leading: 1.7;
}

.page-faq .faq-flow .faq-group:nth-of-type(4) {
  --faq-q-size: 14.8px;
  --faq-a-size: 14.4px;
  --faq-leading: 1.66;
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  font-size: var(--faq-q-size);
  line-height: 1.5;
  color: var(--ab-text);
  cursor: pointer;
  list-style: none;
  transition: color 180ms var(--ab-ease);
}

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

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

.page-faq .faq-item__chev {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 4px;
  transition: transform 260ms var(--ab-ease);
}

.page-faq .faq-item__chev::before {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 7px;
  height: 7px;
  border-right: 1.5px solid var(--ab-accent);
  border-bottom: 1.5px solid var(--ab-accent);
  transform: rotate(-45deg);
}

.page-faq .faq-item[open] .faq-item__chev {
  transform: rotate(90deg);
}

.page-faq .faq-item__a {
  padding: 0 0 18px 26px;
  max-width: 62ch;
  font-size: var(--faq-a-size);
  line-height: var(--faq-leading);
  color: var(--ab-muted);
}

.page-faq .faq-item__a p {
  margin: 0 0 8px;
}

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

.page-faq .faq-item__a a {
  color: var(--ab-mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faqPanelIn 260ms var(--ab-ease) both;
}

@keyframes faqPanelIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .fld {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  background: var(--ab-layer);
  color: var(--ab-mint);
  font-family: var(--ab-mono);
  font-size: 0.92em;
}

.page-faq .faq-side {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--ab-line);
}

.page-faq .faq-side img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.06) brightness(0.9);
}

.page-faq .faq-side figcaption {
  font-size: 12px;
  line-height: 1.62;
  color: var(--ab-muted);
}

@media (min-width: 720px) {
  .page-faq .faq-side {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 20px;
  }
}

/* ---------- 自查路径 ---------- */

.page-faq .faq-check {
  padding: clamp(22px, 4vw, 34px);
  background: linear-gradient(160deg, rgba(22, 48, 42, 0.92), rgba(8, 17, 15, 0.6));
  border: 1px solid var(--ab-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-faq .faq-check__title {
  margin: 10px 0 8px;
  font-size: clamp(1.25rem, 2.8vw, 1.7rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ab-text);
}

.page-faq .faq-check__lead {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ab-muted);
}

.page-faq .faq-check__steps {
  position: relative;
  margin-top: 22px;
  padding-left: 26px;
}

.page-faq .faq-check__steps::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 16px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--ab-accent), var(--ab-line) 68%, transparent);
}

.page-faq .faq-check__step {
  border-bottom: 1px solid rgba(31, 74, 62, 0.6);
}

.page-faq .faq-check__step:last-child {
  border-bottom: 0;
}

.page-faq .faq-check__sum {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  font-size: 15px;
  color: var(--ab-text);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-check__sum::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 50%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ab-accent);
  box-shadow: 0 0 0 4px rgba(59, 232, 168, 0.15);
  transform: translateY(-50%);
}

.page-faq .faq-check__sum::after {
  content: "";
  width: 8px;
  height: 8px;
  margin-left: auto;
  border-right: 1.5px solid var(--ab-muted);
  border-bottom: 1.5px solid var(--ab-muted);
  transform: rotate(45deg);
  transition: transform 220ms var(--ab-ease), border-color 220ms var(--ab-ease);
}

.page-faq .faq-check__step[open] .faq-check__sum::after {
  transform: rotate(225deg);
  border-color: var(--ab-accent);
}

.page-faq .faq-check__tag {
  flex: none;
  font-family: var(--ab-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ab-amber);
}

.page-faq .faq-check__name {
  font-size: 15px;
}

.page-faq .faq-check__list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .faq-check__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.66;
  color: var(--ab-muted);
}

.page-faq .faq-check__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 1px;
  background: var(--ab-mint);
}

/* ---------- 底部反馈 ---------- */

.page-faq .faq-cta {
  padding: 0 0 clamp(48px, 7vw, 88px);
}

.page-faq .faq-cta__panel {
  position: relative;
  padding: clamp(24px, 5vw, 48px);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(242, 162, 60, 0.14), transparent 60%),
    linear-gradient(150deg, rgba(22, 48, 42, 0.95), rgba(8, 17, 15, 0.78));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-faq .faq-cta__panel::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 72px;
  height: 3px;
  background: var(--ab-accent);
}

.page-faq .faq-cta__panel h2 {
  margin: 10px 0 12px;
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--ab-text);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ab-muted);
}

.page-faq .faq-cta__need {
  list-style: none;
  margin: 22px 0 24px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-cta__need li {
  padding-left: 12px;
  border-left: 2px solid var(--ab-line);
  font-size: 14px;
  line-height: 1.65;
  color: var(--ab-muted);
}

.page-faq .faq-cta__need b {
  display: block;
  margin-bottom: 4px;
  font-family: var(--ab-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--ab-mint);
}

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

.page-faq .faq-cta__hint {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ab-muted);
}

@media (min-width: 720px) {
  .page-faq .faq-cta__need {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px 22px;
  }
}

/* ---------- 降级与窄屏收尾 ---------- */

@media (max-width: 480px) {
  .page-faq .faq-hero__facts {
    gap: 12px 20px;
  }

  .page-faq .faq-hero__facts dd {
    font-size: 13.5px;
  }

  .page-faq .faq-item__a {
    padding-left: 20px;
  }

  .page-faq .faq-cta__actions .ab-btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__chev,
  .page-faq .faq-check__sum::after,
  .page-faq .faq-index__link,
  .page-faq .faq-index__link::before {
    transition: none;
  }
}
<<<END>>>