.page-faq {
  --faq-accent: var(--cinnabar);
  --faq-line: 1px solid rgba(46, 74, 103, 0.55);
  --faq-glass: rgba(27, 49, 73, 0.42);
  background: var(--ink-800);
  color: var(--paper);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  max-width: var(--container);
  margin: 0 auto;
  padding: 22px var(--gutter) 40px;
}

.page-faq .faq-hero__path {
  margin-bottom: 18px;
}

.page-faq .faq-hero__frame {
  position: relative;
  padding: 30px 18px 26px;
  border: 1px solid rgba(46, 74, 103, 0.7);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(46, 74, 103, 0.55), transparent 62%),
    linear-gradient(180deg, rgba(6, 14, 24, 0.62), rgba(11, 26, 43, 0.28));
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 7px;
  background-image: repeating-linear-gradient(90deg, var(--ink-600) 0 1px, transparent 1px 11px);
  opacity: 0.85;
}

.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 34px;
  height: 34px;
  border-right: 2px solid var(--cinnabar);
  border-bottom: 2px solid var(--cinnabar);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-size: clamp(2rem, 7.2vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 0 0 26px;
  max-width: 62ch;
  color: var(--paper-dim);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-quickbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--ink-600);
  background: var(--faq-glass);
  transition: border-color 240ms var(--ease);
}

.page-faq .faq-quickbar:focus-within {
  border-color: var(--cinnabar);
}

.page-faq .faq-quickbar__hint {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
  padding-right: 8px;
  border-right: 1px solid var(--ink-600);
}

.page-faq .faq-quickbar__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-quickbar__link {
  display: inline-block;
  padding: 6px 10px;
  color: var(--paper);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.4;
  border: 1px solid transparent;
  border-bottom-color: var(--ink-600);
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-quickbar__link:hover,
.page-faq .faq-quickbar__link:focus-visible {
  color: var(--paper);
  border-color: var(--cinnabar);
  background: rgba(200, 50, 42, 0.16);
}

.page-faq .faq-quickbar__copy {
  margin-left: auto;
  font-size: 12px;
}

.page-faq .faq-hero__ref {
  position: absolute;
  top: 12px;
  right: 14px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) 64px;
}

/* ---------- 索引栏 ---------- */
.page-faq .faq-rail {
  align-self: start;
  padding: 18px;
  border: 1px solid var(--ink-600);
  background: var(--faq-glass);
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-faq .faq-rail__list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail__link {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: center;
  padding: 9px 8px;
  color: var(--paper-dim);
  text-decoration: none;
  font-size: 13.5px;
  border-left: 2px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--paper);
  background: rgba(46, 74, 103, 0.34);
}

.page-faq .faq-rail__link[aria-current="true"] {
  color: var(--paper);
  border-left-color: var(--cinnabar);
  background: rgba(200, 50, 42, 0.14);
}

.page-faq .faq-rail__code {
  font-size: 11px;
  color: var(--gold);
}

.page-faq .faq-rail__note {
  padding-top: 16px;
  border-top: 1px solid var(--ink-600);
  color: var(--mist);
  font-size: 12.5px;
  line-height: 1.7;
}

.page-faq .faq-rail__note p {
  margin: 0 0 6px;
}

.page-faq .faq-rail__ver {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-rail__more {
  display: grid;
  gap: 6px;
  margin-top: 14px;
}

.page-faq .faq-rail__more a {
  color: var(--paper-dim);
  font-size: 13px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  width: fit-content;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-rail__more a:hover,
.page-faq .faq-rail__more a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--cinnabar);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-main {
  display: grid;
  gap: 44px;
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--sg-header-h) + 20px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ink-600);
}

.page-faq .faq-group__tick {
  width: 14px;
  height: 4px;
  flex: none;
  align-self: center;
  background: var(--faq-accent);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.35rem, 4.8vw, 1.9rem);
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-group__tag {
  margin-left: auto;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--faq-accent);
  white-space: nowrap;
}

.page-faq .faq-group__lead {
  margin: 12px 0 16px;
  font-size: 14.5px;
  line-height: 1.8;
  max-width: 64ch;
}

.page-faq .faq-group__foot {
  margin: 16px 0 0;
  font-size: 13.5px;
  color: var(--mist);
}

.page-faq .faq-group__foot a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--cinnabar);
  padding-bottom: 1px;
}

.page-faq .faq-group__foot a:hover,
.page-faq .faq-group__foot a:focus-visible {
  color: var(--cinnabar-lt);
}

.page-faq .faq-group--1 { --faq-accent: var(--cinnabar); }
.page-faq .faq-group--2 { --faq-accent: var(--gold); }
.page-faq .faq-group--3 { --faq-accent: var(--jade); }
.page-faq .faq-group--4 { --faq-accent: var(--mist); }
.page-faq .faq-group--5 { --faq-accent: var(--cinnabar-lt); }
.page-faq .faq-group--6 { --faq-accent: var(--paper-dim); }

/* ---------- 折叠问答 ---------- */
.page-faq .faq-acc {
  border-top: 1px solid rgba(46, 74, 103, 0.55);
}

.page-faq .faq-acc__item {
  border-bottom: 1px solid rgba(46, 74, 103, 0.55);
  background: transparent;
  transition: background-color 220ms var(--ease);
}

.page-faq .faq-acc__item:hover {
  background: rgba(27, 49, 73, 0.4);
}

.page-faq .faq-acc__h {
  margin: 0;
  font-size: inherit;
  font-weight: 400;
}

.page-faq .faq-acc__trigger {
  display: grid;
  grid-template-columns: auto 1fr 22px;
  gap: 12px;
  align-items: start;
  width: 100%;
  padding: 15px 10px;
  background: none;
  border: 0;
  border-left: 2px solid transparent;
  color: var(--paper);
  font-family: inherit;
  font-size: 15px;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}

.page-faq .faq-acc__trigger:hover,
.page-faq .faq-acc__trigger:focus-visible {
  border-left-color: var(--faq-accent);
}

.page-faq .faq-acc__trigger:focus-visible {
  outline: 2px solid var(--cinnabar-lt);
  outline-offset: -2px;
}

.page-faq .faq-acc__trigger[aria-expanded="true"] {
  border-left-color: var(--faq-accent);
  color: var(--paper);
}

.page-faq .faq-acc__code {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--faq-accent);
  padding-top: 4px;
  white-space: nowrap;
}

.page-faq .faq-acc__sign {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  justify-self: end;
}

.page-faq .faq-acc__sign::before,
.page-faq .faq-acc__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--faq-accent);
  transform: translate(-50%, -50%);
  transition: transform 220ms var(--ease), opacity 220ms var(--ease);
}

.page-faq .faq-acc__sign::before {
  width: 12px;
  height: 1.5px;
}

.page-faq .faq-acc__sign::after {
  width: 1.5px;
  height: 12px;
}

.page-faq .faq-acc__trigger[aria-expanded="true"] .faq-acc__sign::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-acc__panel {
  padding: 0 12px 16px 22px;
  animation: faq-panel-in 240ms ease-out;
}

.page-faq .faq-acc__panel[hidden] {
  display: none;
}

.page-faq .faq-acc__panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--paper-dim);
  max-width: 62ch;
}

.page-faq .faq-acc__panel a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--cinnabar);
}

.page-faq .faq-acc__panel a:hover,
.page-faq .faq-acc__panel a:focus-visible {
  color: var(--cinnabar-lt);
}

@keyframes faq-panel-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 热门五问：实色卡承托 */
.page-faq .faq-acc--hot {
  border: 1px solid var(--ink-600);
  border-top: 2px solid var(--cinnabar);
  background: rgba(11, 26, 43, 0.72);
  padding: 4px 6px;
}

.page-faq .faq-acc--hot .faq-acc__item:last-child {
  border-bottom: 0;
}

/* ---------- 图文区 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 0;
}

.page-faq .faq-figure__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--ink-600);
  background: var(--ink-900);
}

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

.page-faq .faq-figure__caption {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

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

/* ---------- 兜底区块 ---------- */
.page-faq .faq-more {
  position: relative;
  padding: 26px 18px;
  border: 1px solid var(--ink-600);
  border-left: 3px solid var(--cinnabar);
  background:
    linear-gradient(120deg, rgba(200, 50, 42, 0.16), transparent 52%),
    var(--ink-900);
}

.page-faq .faq-more__title {
  margin: 0 0 12px;
  font-size: clamp(1.3rem, 4.6vw, 1.8rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-more__text {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--paper-dim);
  max-width: 60ch;
}

.page-faq .faq-more__list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 14px;
  color: var(--paper);
}

.page-faq .faq-more__list .sg-mono {
  display: inline-block;
  min-width: 44px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .faq-more__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-more__ref {
  position: absolute;
  right: 16px;
  bottom: 12px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-600);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 26px var(--gutter) 48px;
  }

  .page-faq .faq-hero__frame {
    padding: 40px 34px 32px;
  }

  .page-faq .faq-quickbar {
    padding: 14px 16px;
    gap: 12px;
  }

  .page-faq .faq-acc__trigger {
    padding: 17px 14px;
    font-size: 15.5px;
  }

  .page-faq .faq-acc__panel {
    padding: 0 16px 18px 42px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

  .page-faq .faq-figure {
    margin-top: 26px;
  }

  .page-faq .faq-more {
    padding: 34px 30px;
  }
}

/* ---------- 桌面：左索引 + 右问答 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding-top: 32px;
  }

  .page-faq .faq-hero__frame {
    padding: 52px 48px 40px;
  }

  .page-faq .faq-hero__lead {
    font-size: 16px;
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: 44px;
    padding-bottom: 88px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--sg-header-h) + 16px);
  }

  .page-faq .faq-main {
    gap: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-acc__panel {
    animation: none;
  }

  .page-faq .faq-acc__sign::before,
  .page-faq .faq-acc__sign::after,
  .page-faq .faq-quickbar__link,
  .page-faq .faq-rail__link,
  .page-faq .faq-acc__trigger {
    transition: none;
  }
}
<<<END>>>