.page-faq {
  background-color: var(--ink-900);
  color: var(--bone-100);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq p {
  margin: 0 0 1.1em;
}

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

.page-faq a {
  color: inherit;
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--lime-400);
  outline-offset: 2px;
}

/* ---------- 通用小标签 ---------- */
.page-faq .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime-400);
}

.page-faq .eyebrow::before {
  content: "";
  display: block;
  width: 2px;
  height: 12px;
  background: var(--lime-400);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-faq .breadcrumbs__item {
  font-size: var(--fs-13);
  color: var(--mist-300);
  letter-spacing: 0.06em;
}

.page-faq .breadcrumbs a {
  color: var(--mist-300);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .breadcrumbs a:hover {
  color: var(--lime-400);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  border-bottom: 1px solid var(--line);
  padding-block: clamp(28px, 5vw, 52px) clamp(40px, 7vw, 84px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
  margin-top: clamp(8px, 2vw, 20px);
}

.page-faq .faq-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: var(--fs-64);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.02em;
  max-width: 15ch;
}

.page-faq .faq-hero__lede {
  max-width: 54ch;
  margin: 0;
  color: var(--mist-300);
  font-size: var(--fs-18);
  line-height: 1.75;
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-faq .faq-quick-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  color: var(--bone-100);
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-quick-link:hover {
  border-color: var(--lime-400);
  color: var(--lime-400);
}

.page-faq .faq-hero__side {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-faq .faq-hero__side-title {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist-300);
}

.page-faq .faq-rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-rhythm__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-13);
}

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

.page-faq .faq-rhythm__label {
  color: var(--mist-300);
  letter-spacing: 0.06em;
}

.page-faq .faq-rhythm__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--amber-500);
  white-space: nowrap;
}

/* ---------- 两栏布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  padding-block: clamp(40px, 7vw, 88px);
}

/* ---------- 左侧主题索引 ---------- */
.page-faq .faq-index__label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist-300);
}

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

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

.page-faq .faq-index__link {
  position: relative;
  display: block;
  padding: 11px 18px 11px 0;
  border-bottom: 1px solid var(--line);
  color: var(--mist-300);
  font-size: var(--fs-13);
  letter-spacing: 0.08em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--bone-100);
}

.page-faq .faq-index__fallback {
  display: inline-block;
  margin-top: 18px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-index__fallback:hover {
  border-bottom-color: var(--amber-500);
}

/* ---------- 问答分组 ---------- */
.page-faq .qa-group {
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-faq .qa-group + .qa-group {
  margin-top: clamp(48px, 8vw, 88px);
}

.page-faq .qa-group__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .qa-group__idx {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--mist-300);
  opacity: 0.55;
}

.page-faq .qa-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-28);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-faq .qa-group__intro {
  margin: 14px 0 4px;
  max-width: 58ch;
  color: var(--mist-300);
  font-size: var(--fs-body);
}

.page-faq .qa-group__media {
  margin: 24px 0 8px;
}

.page-faq .media__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-faq .media__caption {
  display: block;
  margin-top: 10px;
  font-size: var(--fs-13);
  color: var(--mist-300);
  letter-spacing: 0.04em;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  margin-top: 20px;
}

.page-faq .qa {
  position: relative;
  padding-left: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .qa-list > .qa:first-child {
  border-top: 1px solid var(--line);
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--lime-400);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.page-faq .qa[open]::before {
  opacity: 1;
}

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 18px 6px 18px 0;
  cursor: pointer;
  list-style: none;
  color: var(--bone-100);
}

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

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
  color: var(--mist-300);
  padding-top: 3px;
  transition: color var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__num {
  color: var(--lime-400);
}

.page-faq .qa__q {
  font-size: var(--fs-18);
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.01em;
}

.page-faq .qa__sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 8px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--mist-300);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .qa__sign::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1px;
}

.page-faq .qa__sign::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1px;
}

.page-faq .qa[open] .qa__sign::before {
  background: var(--lime-400);
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
}

.page-faq .qa__a {
  padding: 0 6px 22px 0;
  max-width: 62ch;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--bone-100);
  opacity: 0.84;
}

/* ---------- 三步操作 ---------- */
.page-faq .faq-steps {
  border-top: 1px solid var(--line);
  padding-block: clamp(48px, 8vw, 96px);
}

.page-faq .faq-steps__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: var(--fs-40);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.page-faq .faq-steps__lede {
  margin: 0 0 clamp(28px, 4vw, 44px);
  max-width: 56ch;
  color: var(--mist-300);
}

.page-faq .faq-steps__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(24px, 3.5vw, 34px);
}

.page-faq .step__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-faq .step__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--lime-400);
  color: var(--lime-400);
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
}

.page-faq .step__route {
  height: 30px;
  margin-bottom: 10px;
  color: var(--line);
}

.page-faq .step__route svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-faq .step__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: var(--fs-28);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-faq .step__desc {
  margin: 0;
  max-width: 36ch;
  font-size: var(--fs-13);
  line-height: 1.75;
  color: var(--mist-300);
}

.page-faq .faq-steps__figure {
  margin: 0;
}

/* ---------- 反馈信息 ---------- */
.page-faq .faq-report {
  border-top: 1px solid var(--line);
  padding-block: clamp(48px, 8vw, 96px);
}

.page-faq .faq-report__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-faq .faq-report__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: var(--fs-40);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.page-faq .faq-report__text {
  max-width: 44ch;
  color: var(--mist-300);
}

.page-faq .faq-report__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-report__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-report__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
  color: var(--amber-500);
  padding-top: 4px;
}

.page-faq .faq-report__name {
  margin: 0 0 6px;
  font-size: var(--fs-18);
  font-weight: 500;
  line-height: 1.4;
}

.page-faq .faq-report__desc {
  margin: 0;
  font-size: var(--fs-13);
  line-height: 1.7;
  color: var(--mist-300);
}

/* ---------- 联系收束 ---------- */
.page-faq .faq-contact {
  padding-block: clamp(24px, 4vw, 48px) clamp(56px, 9vw, 112px);
}

.page-faq .faq-contact__panel {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid var(--line);
  background: var(--charcoal-800);
}

.page-faq .faq-contact__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: var(--fs-40);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.page-faq .faq-contact__text {
  max-width: 46ch;
  color: var(--mist-300);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 24px;
  font-size: var(--fs-13);
  letter-spacing: 0.1em;
  text-decoration: none;
  border: 1px solid var(--lime-400);
  background: var(--lime-400);
  color: var(--ink-900);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-cta:hover {
  background: transparent;
  color: var(--lime-400);
}

.page-faq .faq-cta--ghost {
  background: transparent;
  color: var(--bone-100);
  border-color: var(--line);
}

.page-faq .faq-cta--ghost:hover {
  border-color: var(--lime-400);
  color: var(--lime-400);
}

.page-faq .faq-contact__facts {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-13);
}

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

.page-faq .faq-contact__row dt {
  color: var(--mist-300);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--bone-100);
  overflow-wrap: anywhere;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .qa__a {
    padding-left: 36px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(180px, 27%) minmax(0, 1fr);
    align-items: start;
    gap: clamp(40px, 5vw, 80px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    padding: 12px 0 12px 18px;
    border-bottom: 0;
    border-left: 1px solid var(--line);
    white-space: normal;
  }

  .page-faq .faq-index__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 50%;
    width: 9px;
    height: 2px;
    background: var(--amber-500);
    transform: translateY(-50%) scaleX(0);
    transform-origin: left center;
    transition: transform var(--dur) var(--ease);
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--bone-100);
  }

  .page-faq .faq-index__link:hover::before,
  .page-faq .faq-index__link:focus-visible::before {
    transform: translateY(-50%) scaleX(1);
  }

  .page-faq .faq-report__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-faq .faq-contact__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 780px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .step__desc {
    max-width: 26ch;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-steps__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-faq .faq-steps__figure {
    margin-top: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>