.page-faq {
  --faq-cut: 14px;
  --faq-hair: rgba(43, 90, 78, .75);
  background: var(--c-ink);
  color: var(--c-body);
}

.page-faq .container {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(26px, 5vw, 58px)) 0 clamp(30px, 5vw, 54px);
  background:
    radial-gradient(90% 80% at 88% 4%, rgba(57, 245, 209, .12), transparent 62%),
    linear-gradient(178deg, var(--c-navy) 0%, var(--c-ink) 74%);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .breadcrumb {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--c-mist);
  margin-bottom: clamp(18px, 3vw, 34px);
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .breadcrumb li + li::before {
  content: '/';
  margin-right: 6px;
  color: var(--c-line);
}

.page-faq .breadcrumb a {
  color: var(--c-cyan-soft);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover {
  color: var(--c-cyan);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero__copy .eyebrow {
  color: var(--c-cyan);
  margin-bottom: 14px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(1.85rem, 5.2vw, 3.3rem);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--c-paper);
  margin: 0 0 clamp(14px, 2vw, 22px);
  max-width: 26ch;
}

.page-faq .faq-hero__lead {
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.85;
  color: var(--c-body);
  max-width: 54ch;
  margin: 0 0 clamp(20px, 3vw, 30px);
}

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

.page-faq .faq-hero__media {
  margin: 0;
  position: relative;
  border: 1px solid var(--c-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: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-hero__media .media-frame__label {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--c-cyan-soft);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: clamp(26px, 4vw, 46px) 0 0;
  padding: clamp(16px, 2.4vw, 24px) 0 0;
  border-top: 1px solid var(--c-line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2.4vw, 28px);
}

.page-faq .faq-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-hero__num {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  line-height: 1;
  color: var(--c-cyan);
  letter-spacing: -.01em;
}

.page-faq .faq-hero__stats li span:last-child {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--c-mist);
}

/* ---------- 问答区 ---------- */
.page-faq .faq-ask {
  padding: clamp(36px, 5vw, 72px) 0 clamp(44px, 6vw, 88px);
}

.page-faq .faq-ask__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .faq-ask__head h2 {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.25;
  color: var(--c-paper);
  margin: 0;
}

.page-faq .faq-ask__head p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--c-mist);
  max-width: 54ch;
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  margin-bottom: clamp(22px, 3vw, 38px);
}

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

.page-faq .filter-chip {
  appearance: none;
  border: 1px solid var(--c-line);
  background: transparent;
  color: var(--c-mist);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  padding: 8px 14px;
  cursor: pointer;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .filter-chip:hover {
  color: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-faq .filter-chip[aria-pressed="true"] {
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: var(--c-ink);
}

.page-faq .filter-chip:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--c-cyan);
}

.page-faq .faq-filter__status {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--c-mist);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.5vw, 52px);
}

.page-faq .faq-index {
  position: relative;
  border-left: 1px solid var(--c-line);
  padding-left: 18px;
}

.page-faq .faq-index .eyebrow {
  color: var(--c-cyan);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0 0 0 20px;
  position: relative;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__list::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 12px;
  bottom: 12px;
  border-left: 1px dashed var(--c-line);
}

.page-faq .faq-index__list li {
  position: relative;
}

.page-faq .faq-index__list li::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1px solid var(--c-cyan);
  background: var(--c-ink);
}

.page-faq .faq-index__list a {
  display: block;
  padding: 9px 0;
  text-decoration: none;
  color: var(--c-body);
  font-size: .93rem;
  line-height: 1.45;
  border-bottom: 1px solid var(--faq-hair);
  transition: color .2s var(--ease), padding-left .2s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--c-cyan);
  padding-left: 4px;
}

.page-faq .faq-index__tip {
  margin: 14px 0 0;
  font-size: .8rem;
  line-height: 1.7;
  color: var(--c-mist);
  max-width: 30ch;
}

/* ---------- 分组与手风琴 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(32px, 4.4vw, 60px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-group__no {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  line-height: 1;
  color: var(--c-cyan);
  letter-spacing: .02em;
}

.page-faq .faq-group__head h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(1.12rem, 2.2vw, 1.5rem);
  line-height: 1.3;
  color: var(--c-paper);
}

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

.page-faq .qa__q {
  position: relative;
  display: block;
  padding: 16px 42px 16px 0;
  cursor: pointer;
  list-style: none;
  color: var(--c-paper);
  font-weight: 500;
  font-size: .98rem;
  line-height: 1.6;
  transition: color .2s var(--ease);
}

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

.page-faq .qa__q::after {
  content: '';
  position: absolute;
  right: 12px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--c-cyan);
  border-bottom: 2px solid var(--c-cyan);
  transform: rotate(45deg);
  transition: transform .25s var(--ease);
}

.page-faq .qa[open] .qa__q {
  color: var(--c-cyan);
}

.page-faq .qa[open] .qa__q::after {
  transform: rotate(-135deg);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: -2px;
}

.page-faq .qa__a {
  padding: 0 0 18px;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: .95rem;
  line-height: 1.82;
  color: var(--c-body);
  max-width: 62ch;
}

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

.page-faq .qa__a a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .qa__steps {
  list-style: none;
  counter-reset: step;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
  max-width: 62ch;
}

.page-faq .qa__steps li {
  counter-increment: step;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--c-body);
  padding-left: 2px;
}

.page-faq .qa__steps li::before {
  content: counter(step, decimal-leading-zero);
  flex: none;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--c-cyan);
  padding-top: 3px;
}

.page-faq .faq-group__figure {
  margin: clamp(16px, 2.6vw, 26px) 0 0;
  border: 1px solid var(--c-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

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

.page-faq .faq-group__figure .media-frame__label {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--c-cyan-soft);
}

/* ---------- 支持面板 ---------- */
.page-faq .faq-support {
  padding: 0 0 clamp(48px, 7vw, 92px);
}

.page-faq .faq-support__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(22px, 3.4vw, 44px);
  background: linear-gradient(155deg, var(--c-tunnel) 0%, var(--c-navy) 100%);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-support__copy .eyebrow {
  color: var(--c-cyan);
  margin-bottom: 12px;
}

.page-faq .faq-support__copy h2 {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(1.35rem, 2.8vw, 2rem);
  line-height: 1.3;
  color: var(--c-paper);
  max-width: 22ch;
}

.page-faq .faq-support__copy > p {
  margin: 0 0 20px;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--c-body);
  max-width: 42ch;
}

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

.page-faq .faq-support__list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-support__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px solid var(--faq-hair);
  min-width: 0;
}

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

.page-faq .faq-support__row dt {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--c-mist);
}

.page-faq .faq-support__row dd {
  margin: 0;
  font-size: .95rem;
  line-height: 1.6;
  color: var(--c-paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-support__row dd a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-support__row dd a:hover {
  border-bottom-color: var(--c-cyan);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-faq .faq-ask__head {
    grid-template-columns: 1fr 1fr;
    align-items: end;
    gap: var(--gap);
  }

  .page-faq .faq-support__panel {
    grid-template-columns: 1.15fr .85fr;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-faq .qa__q {
    font-size: 1.02rem;
    padding: 18px 42px 18px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .filter-chip,
  .page-faq .qa__q,
  .page-faq .qa__q::after,
  .page-faq .faq-index__list a {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>