.page-faq {
  --faq-sticky: 92px;
  --faq-radius: var(--radius-md);
  background: var(--ink-950);
  color: var(--paper);
}

.page-faq .path-bar {
  padding-block: 1.1rem 0;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.6rem, 4vw, 2.6rem) clamp(2.4rem, 6vw, 4.2rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -120px;
  width: min(680px, 88%);
  aspect-ratio: 1;
  background:
    radial-gradient(circle at 34% 32%, rgba(198, 255, 61, 0.16), transparent 62%),
    linear-gradient(150deg, rgba(18, 51, 42, 0.9), transparent 70%);
  clip-path: polygon(20% 0, 100% 14%, 80% 100%, 0 76%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(340px, 42%);
  height: 2px;
  background: linear-gradient(90deg, var(--orange), transparent);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-faq .faq-hero h1 {
  margin: 0.7rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 7vw, 4.3rem);
  line-height: 1;
  letter-spacing: -0.02em;
  max-width: 22ch;
}

.page-faq .faq-hero .lede {
  margin-top: 1.1rem;
  max-width: 56ch;
  color: var(--muted);
  font-size: clamp(0.96rem, 1.6vw, 1.05rem);
  line-height: 1.7;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem 2.2rem;
  margin-top: clamp(1.4rem, 3vw, 2rem);
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 6rem;
}

.page-faq .faq-stat__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1;
  color: var(--lime);
  letter-spacing: -0.01em;
}

.page-faq .faq-stat--warm .faq-stat__num {
  color: var(--orange);
  font-size: clamp(1.2rem, 2.6vw, 1.6rem);
}

.page-faq .faq-stat__label {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-hero__side {
  position: relative;
  padding: 1.2rem 0 0 1.1rem;
  border-left: 2px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.68;
}

.page-faq .faq-hero__side-title {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-faq .faq-hero__side p {
  margin: 0 0 1rem;
}

.page-faq .faq-hero__side .btn {
  margin-top: 0.2rem;
}

/* 六类索引带 */
.page-faq .faq-index {
  border-block: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(23, 64, 47, 0.55), transparent 55%),
    var(--ink-900);
  padding-block: clamp(2.2rem, 5.5vw, 4rem);
}

.page-faq .faq-index__head {
  max-width: 62ch;
}

.page-faq .faq-index__head .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-faq .faq-index__head p {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.7;
}

.page-faq .faq-index__grid {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.4rem);
  margin-top: clamp(1.4rem, 3.5vw, 2.2rem);
}

.page-faq .faq-index__figure {
  margin: 0;
  position: relative;
}

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

.page-faq .faq-index__figure figcaption {
  margin-top: 0.7rem;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-index__list a {
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
  height: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: rgba(7, 19, 15, 0.55);
  text-decoration: none;
  color: var(--paper);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-color: var(--lime);
  background: rgba(198, 255, 61, 0.06);
  transform: translateY(-2px);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .faq-index__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.08rem;
  letter-spacing: 0.01em;
}

.page-faq .faq-index__desc {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--muted);
}

/* 问答主体 */
.page-faq .faq-main {
  padding-block: clamp(2.4rem, 6vw, 4.8rem);
}

.page-faq .faq-main__inner {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

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

.page-faq .faq-side__title {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-faq .faq-side__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
}

.page-faq .faq-side__list a {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.42rem 0;
  border-bottom: 1px solid rgba(42, 74, 62, 0.55);
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-side__list a span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--orange);
  letter-spacing: 0.08em;
}

.page-faq .faq-side__list a:hover,
.page-faq .faq-side__list a:focus-visible {
  color: var(--lime);
}

.page-faq .faq-side__note {
  margin: 1rem 0 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-side__note a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-faq .faq-cat {
  margin-bottom: clamp(2rem, 5vw, 3.4rem);
  scroll-margin-top: calc(var(--faq-sticky) + 12px);
}

.page-faq .faq-cat:last-of-type {
  margin-bottom: clamp(2.4rem, 6vw, 4rem);
}

.page-faq .faq-cat__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem 0.8rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2rem);
  letter-spacing: -0.01em;
}

.page-faq .faq-cat__note {
  flex: 1 1 100%;
  margin: 0.1rem 0 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  padding-left: 0.85rem;
  box-shadow: inset 2px 0 0 transparent;
  transition: box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  box-shadow: inset 2px 0 0 var(--lime);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 1.05rem 0.6rem 1.05rem 0;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--lime);
}

.page-faq .faq-item__num {
  flex: none;
  padding-top: 0.18em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(0.98rem, 1.7vw, 1.06rem);
  font-weight: 500;
  line-height: 1.55;
}

.page-faq .faq-item__plus {
  position: relative;
  flex: none;
  width: 0.95rem;
  height: 0.95rem;
  margin-top: 0.42rem;
}

.page-faq .faq-item__plus::before,
.page-faq .faq-item__plus::after {
  content: "";
  position: absolute;
  inset: 50% 0 auto 0;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .faq-item__plus::after {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__plus::after {
  transform: rotate(90deg) scaleX(0);
  opacity: 0;
}

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

.page-faq .faq-item__body {
  padding: 0 0.8rem 1.25rem 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.74;
}

.page-faq .faq-item__body p {
  margin: 0 0 0.7rem;
}

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

.page-faq .faq-item__body a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0.6rem 0 0.7rem;
  padding: 0;
  counter-reset: faqstep;
  display: grid;
  gap: 0.45rem;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.9;
  color: var(--lime-dim);
}

.page-faq .faq-steps--big {
  margin-top: 0;
  gap: 0.6rem;
  font-size: 0.94rem;
  color: var(--paper);
}

/* 联系准备 */
.page-faq .faq-help {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 88% 0%, rgba(255, 138, 61, 0.16), transparent 55%),
    linear-gradient(160deg, rgba(18, 51, 42, 0.9), rgba(7, 19, 15, 0.9));
  padding: clamp(1.3rem, 4vw, 2.6rem);
  scroll-margin-top: calc(var(--faq-sticky) + 12px);
}

.page-faq .faq-help__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.2rem);
  letter-spacing: -0.01em;
}

.page-faq .faq-help__intro {
  margin: 0.6rem 0 1.4rem;
  max-width: 56ch;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.7;
}

.page-faq .faq-help__grid {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.2rem);
}

.page-faq .faq-help__contact {
  display: grid;
  gap: 0.7rem;
  margin: 1.3rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-help__contact div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.9rem;
  align-items: baseline;
}

.page-faq .faq-help__contact dt {
  flex: none;
  width: 5.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-help__contact dd {
  margin: 0;
  font-size: 0.9rem;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__contact div:first-child dd {
  font-family: var(--font-mono);
  color: var(--lime);
}

.page-faq .faq-help__note {
  margin: 1.1rem 0 1.2rem;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-help__note a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

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

.page-faq .faq-help__figure figcaption {
  margin-top: 0.65rem;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--muted);
}

/* 响应式 */
@media (min-width: 560px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-block: clamp(2rem, 4vw, 3rem) clamp(3rem, 6vw, 5rem);
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: end;
  }

  .page-faq .faq-hero__side {
    padding: 0 0 0 1.3rem;
    max-width: 34ch;
    margin-left: auto;
  }

  .page-faq .faq-index__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-faq .faq-help__figure {
    order: 2;
  }

  .page-faq .faq-help__body {
    order: 1;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-main__inner {
    grid-template-columns: minmax(190px, 250px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .faq-side {
    position: sticky;
    top: var(--faq-sticky);
    border-top: 0;
    border-left: 1px solid var(--line);
    padding: 0 0 0 1.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__list a,
  .page-faq .faq-item__plus::before,
  .page-faq .faq-item__plus::after {
    transition: none;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    transform: none;
  }
}
<<<END>>>