.page-faq {
  --faq-rail: 19.5rem;
  --faq-ink-soft: rgba(242, 237, 227, 0.82);
  --faq-ink-dim: rgba(242, 237, 227, 0.68);
  background: var(--ink);
  color: var(--cream);
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(2rem, 6vw, 4.4rem) 0 clamp(1.8rem, 5vw, 3.2rem);
  border-bottom: 1px solid var(--line);
  background:
    repeating-linear-gradient(115deg, rgba(143, 166, 191, 0.055) 0 1px, transparent 1px 26px),
    radial-gradient(120% 90% at 92% 0%, rgba(25, 211, 255, 0.11), transparent 62%),
    radial-gradient(85% 70% at 0% 100%, rgba(242, 166, 59, 0.09), transparent 64%);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--ice);
}

.page-faq .breadcrumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .breadcrumbs a[aria-current="page"] {
  color: var(--amber);
}

.page-faq .eyebrow {
  margin: 1.15rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  color: var(--amber);
}

.page-faq .faq-hero h1 {
  margin: 0.7rem 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 7vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  max-width: 17em;
}

.page-faq .faq-hero__lead-text {
  margin: 0;
  max-width: 40em;
  font-size: clamp(1rem, 1.7vw, 1.1rem);
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 1.15rem 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem 1.2rem;
}

.page-faq .faq-facts li {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--ice);
}

.page-faq .faq-facts__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1;
  color: var(--amber);
}

.page-faq .faq-hero__figure {
  margin: 0;
  align-self: end;
}

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

.page-faq .media-frame__caption {
  display: block;
  margin-top: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--ice);
}

/* 高频速览 */
.page-faq .faq-quick {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 42, 63, 0.92), rgba(11, 27, 43, 0.92));
}

.page-faq .faq-quick__label {
  margin: 0;
  padding: 1.1rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--ice);
}

.page-faq .faq-quick__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.55rem;
  padding: 0.9rem 0 1.2rem;
}

.page-faq .faq-quick__link {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.6rem 0.85rem;
  text-decoration: none;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--cream);
  background: rgba(11, 27, 43, 0.6);
  border: 1px solid var(--line-soft);
  clip-path: var(--radius-cut);
  transition: color 140ms ease, border-color 140ms ease, background 140ms ease;
}

.page-faq .faq-quick__link:hover,
.page-faq .faq-quick__link:focus-visible {
  color: var(--cyan);
  border-color: rgba(56, 232, 208, 0.5);
  background: rgba(56, 232, 208, 0.07);
}

.page-faq .faq-quick__link .data {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--amber);
}

/* 主体双栏 */
.page-faq .faq-body {
  padding: clamp(2rem, 5vw, 3.4rem) 0 clamp(2.6rem, 7vw, 4.6rem);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.8rem);
}

.page-faq .faq-rail__title {
  margin: 0 0 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--ice);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
  border-left: 1px solid var(--line);
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  margin-left: -1px;
  padding: 0.6rem 0.9rem;
  border-left: 2px solid transparent;
  text-decoration: none;
  font-size: 0.94rem;
  line-height: 1.45;
  color: var(--faq-ink-soft);
  transition: color 140ms ease, border-color 140ms ease, background 140ms ease;
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--amber);
  border-left-color: var(--amber);
  background: rgba(242, 166, 59, 0.08);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--rock);
}

.page-faq .faq-rail__panel {
  margin-top: 1.6rem;
  padding: 1rem 1.05rem 1.1rem;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-faq .faq-rail__panel-title {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-faq .faq-rail__links {
  list-style: none;
  margin: 0 0 0.85rem;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.page-faq .faq-rail__links a {
  display: inline-block;
  padding-bottom: 1px;
  font-size: 0.9rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-rail__links a:hover,
.page-faq .faq-rail__links a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-rail__note {
  margin: 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--ice);
}

.page-faq .faq-main__intro {
  margin: 0 0 clamp(1.4rem, 3vw, 2rem);
  padding-left: 1rem;
  border-left: 3px solid var(--amber);
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

/* 分类区块 */
.page-faq .faq-cat {
  padding-top: clamp(1.4rem, 3vw, 2.1rem);
  border-top: 1px solid var(--line);
  scroll-margin-top: 5.5rem;
}

.page-faq .faq-cat + .faq-cat {
  margin-top: clamp(1.8rem, 4vw, 2.8rem);
}

.page-faq .faq-cat__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.35rem 1rem;
  align-items: baseline;
  margin-bottom: 1.1rem;
}

.page-faq .faq-cat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 4vw, 1.9rem);
  font-weight: 600;
  line-height: 1;
  color: var(--amber);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.22rem, 3.4vw, 1.7rem);
  letter-spacing: -0.02em;
}

.page-faq .faq-cat__desc {
  grid-column: 1 / -1;
  margin: 0.15rem 0 0;
  max-width: 44em;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--faq-ink-dim);
}

.page-faq .faq-flow {
  margin: 0 0 1.1rem;
}

/* 问答折叠 */
.page-faq .faq-list {
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: var(--radius-cut);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.95rem 1.1rem;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.55;
  color: var(--cream);
  transition: color 140ms ease;
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1;
  color: var(--amber);
}

.page-faq .faq-item[open] > summary {
  color: #ffffff;
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
  color: var(--cyan);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-faq .faq-item__tag {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--rock);
}

.page-faq .faq-item__q {
  margin: 0;
  font: inherit;
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0;
}

.page-faq .faq-answer {
  margin: 0 1.1rem 1.15rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

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

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

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0.5rem 0 0.7rem;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 1.9rem minmax(0, 1fr);
  gap: 0.5rem;
  align-items: baseline;
}

.page-faq .faq-steps li::before {
  content: "0" counter(faqstep);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--amber);
}

/* 结尾行动区 */
.page-faq .faq-tail {
  border-top: 1px solid var(--line);
  background:
    repeating-linear-gradient(-125deg, rgba(143, 166, 191, 0.06) 0 1px, transparent 1px 30px),
    linear-gradient(140deg, rgba(18, 42, 63, 0.95), rgba(11, 27, 43, 0.95));
  padding: clamp(2rem, 5.5vw, 3.4rem) 0 clamp(2.2rem, 6vw, 3.6rem);
}

.page-faq .faq-tail__inner .eyebrow {
  margin: 0;
}

.page-faq .faq-tail h2 {
  margin: 0.55rem 0 0.8rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.2vw, 2.3rem);
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.page-faq .faq-tail__text {
  margin: 0 0 1.3rem;
  max-width: 40em;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

@media (min-width: 640px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .faq-list > .faq-item:nth-child(even) {
    margin-left: clamp(0px, 4.5%, 3rem);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: clamp(4.6rem, 9vh, 6.4rem);
  }

  .page-faq .faq-quick__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
  }
}
<<<END>>>