.page-faq {
  --faq-rail-w: 248px;
  --faq-gap: clamp(20px, 3.2vw, 44px);
  background:
    radial-gradient(120% 60% at 88% -6%, rgba(31, 78, 121, 0.55) 0%, rgba(8, 26, 51, 0) 62%),
    linear-gradient(180deg, var(--abyss) 0%, var(--midnight) 54%, var(--abyss) 100%);
  color: var(--ivory);
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 48px) 0 clamp(32px, 5vw, 60px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 42px);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: end;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__lead h1 {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 62px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: 0.02em;
  color: var(--ivory);
}

.page-faq .faq-hero__accent {
  color: var(--gold-bright);
  display: block;
}

.page-faq .faq-hero__intro {
  max-width: 54ch;
  margin: 0;
  font-size: clamp(15px, 1.55vw, 18px);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

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

.page-faq .faq-hero__media .media {
  border: 1px solid var(--line-gold);
}

.page-faq .faq-hero__media figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 18px 0 0;
  border-top: 1px dashed var(--line-soft);
  list-style: none;
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__lab {
  font-size: 13px;
  color: var(--slate);
  letter-spacing: 0.03em;
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body__shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding-top: clamp(32px, 5vw, 64px);
}

/* ---------- 左侧分类刻度 ---------- */
.page-faq .faq-rail__sticky {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-rail__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 12px 9px 0;
  border-left: 2px solid transparent;
  color: var(--slate);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible,
.page-faq .faq-rail__link[aria-current="true"] {
  color: var(--gold-bright);
  border-left-color: var(--gold);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold-dark);
  letter-spacing: 0.06em;
}

.page-faq .faq-rail__link[aria-current="true"] .faq-rail__num {
  color: var(--gold);
}

.page-faq .faq-rail__figure {
  display: none;
  margin: 0;
}

.page-faq .faq-rail__figure .media {
  border: 1px solid var(--line);
}

.page-faq .faq-rail__top {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--slate);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-rail__top:hover,
.page-faq .faq-rail__top:focus-visible {
  color: var(--gold-bright);
}

/* ---------- 问答区块 ---------- */
.page-faq .faq-block {
  margin-bottom: clamp(38px, 6vw, 68px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  align-items: start;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block__head .numeral {
  grid-row: 1 / span 2;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ivory);
}

.page-faq .faq-block__head p {
  margin: 2px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--slate);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 2px 14px 14px 14px;
  background: rgba(15, 42, 74, 0.52);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 20px;
  height: 20px;
  background: var(--abyss);
  clip-path: polygon(0 0, 100% 0, 0 100%);
  pointer-events: none;
}

.page-faq .faq-item:hover {
  border-color: rgba(201, 162, 39, 0.45);
}

.page-faq .faq-item[open] {
  border-color: var(--line-gold);
  background: rgba(31, 78, 121, 0.4);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ivory);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item > summary:hover {
  color: var(--gold-bright);
}

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

.page-faq .faq-item__code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  padding-top: 3px;
}

.page-faq .faq-item__q {
  font-weight: 600;
  letter-spacing: 0.01em;
}

.page-faq .faq-item__icon {
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--gold);
  transition: transform var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__icon {
  transform: rotate(45deg);
  color: var(--cinnabar);
}

.page-faq .faq-item__body {
  padding: 0 18px 18px 52px;
  border-top: 1px solid var(--line-soft);
  margin-top: 2px;
}

.page-faq .faq-item__body p {
  margin: 14px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-item[open] .faq-item__body {
  animation: faqBodyIn 320ms var(--ease) both;
}

@keyframes faqBodyIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 尾部联系 ---------- */
.page-faq .faq-block--more .faq-block__head {
  border-bottom-color: rgba(200, 72, 50, 0.5);
}

.page-faq .faq-more__panel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(20px, 3.4vw, 34px);
  border: 1px solid var(--line-gold);
  border-radius: 2px 18px 18px 18px;
  background: linear-gradient(150deg, rgba(31, 78, 121, 0.55) 0%, rgba(8, 26, 51, 0.9) 100%);
  overflow: hidden;
}

.page-faq .faq-more__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 56px;
  background: var(--cinnabar);
}

.page-faq .faq-more__text p {
  margin: 0 0 14px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-more__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-more__lines {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-faq .faq-more__lines li {
  display: grid;
  gap: 3px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-more__lines li:first-child {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-more__lines span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold-dark);
}

.page-faq .faq-more__lines strong {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--ivory);
  word-break: break-word;
}

.page-faq .faq-more__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-more__note a {
  color: var(--gold-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  transition: color var(--dur) var(--ease);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-more__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
  }

  .page-faq .faq-item > summary {
    padding: 17px 20px;
    font-size: 16px;
  }

  .page-faq .faq-item__body {
    padding: 0 22px 20px 56px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail__sticky {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding-right: 18px;
    border-right: 1px solid var(--line-soft);
  }

  .page-faq .faq-rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link {
    padding: 11px 12px 11px 14px;
    white-space: normal;
  }

  .page-faq .faq-rail__figure {
    display: block;
    margin-top: 6px;
  }

  .page-faq .faq-rail__top {
    margin-top: auto;
  }
}

@media (min-width: 1180px) {
  .page-faq {
    --faq-rail-w: 272px;
  }

  .page-faq .faq-hero__grid {
    gap: clamp(32px, 4vw, 64px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__icon,
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__top {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-item__body {
    animation: none;
  }
}
<<<END>>>