.page-faq {
  --faq-rail-w: 228px;
  --faq-accent: var(--gxy-cyan);
  --faq-panel-bg: rgba(18, 26, 46, 0.86);
  --faq-soft-line: rgba(91, 107, 140, 0.28);
  background: var(--gxy-bg);
  color: var(--gxy-ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 56px) 0 clamp(32px, 5vw, 64px);
  background:
    radial-gradient(620px 380px at 8% -10%, rgba(61, 225, 255, 0.16), transparent 62%),
    radial-gradient(520px 340px at 96% 12%, rgba(246, 200, 106, 0.10), transparent 66%),
    linear-gradient(180deg, var(--gxy-bg-2), var(--gxy-bg));
  border-bottom: 1px solid var(--gxy-line-soft);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(91, 107, 140, 0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 107, 140, 0.13) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(80% 90% at 30% 10%, #000 20%, transparent 78%);
  mask-image: radial-gradient(80% 90% at 30% 10%, #000 20%, transparent 78%);
  pointer-events: none;
}

.page-faq .faq-hero .gxy-shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .gxy-breadcrumb {
  margin-bottom: clamp(20px, 3vw, 36px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}

.page-faq .faq-hero__lead .gxy-eyebrow {
  margin: 0 0 14px;
}

.page-faq .faq-hero__lead .gxy-title--xl {
  margin: 0 0 18px;
  max-width: 20ch;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lead .gxy-lead {
  max-width: 40em;
  margin: 0 0 26px;
}

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

.page-faq .faq-hero__card {
  padding: clamp(18px, 3vw, 26px);
  background: var(--faq-panel-bg);
}

.page-faq .faq-hero__card-title {
  margin: 0 0 16px;
  font-family: var(--gxy-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gxy-muted);
}

.page-faq .faq-hero__stats {
  margin: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-faq .faq-stat {
  padding: 12px 0 0;
  border-top: 1px solid var(--faq-soft-line);
}

.page-faq .faq-stat dt {
  font-family: var(--gxy-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gxy-muted);
  margin-bottom: 6px;
}

.page-faq .faq-stat dd {
  margin: 0;
  font-family: var(--gxy-font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--gxy-ink);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-main-section {
  padding-top: clamp(32px, 5vw, 64px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

/* 左侧轨道 */
.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-rail__sticky {
  position: sticky;
  top: 96px;
  padding-left: 18px;
  border-left: 1px solid var(--faq-soft-line);
}

.page-faq .faq-rail__tag {
  margin: 0 0 18px;
  letter-spacing: 0.16em;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 8px 9px 0;
  font-size: 14px;
  color: var(--gxy-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--gxy-ink);
  border-bottom-color: var(--faq-soft-line);
}

.page-faq .faq-rail__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex: none;
  background: var(--gxy-line);
}

.page-faq .faq-rail__dot--cyan { background: var(--gxy-cyan); box-shadow: 0 0 10px rgba(61, 225, 255, 0.6); }
.page-faq .faq-rail__dot--gold { background: var(--gxy-gold); box-shadow: 0 0 10px rgba(246, 200, 106, 0.5); }
.page-faq .faq-rail__dot--coral { background: var(--gxy-coral); box-shadow: 0 0 10px rgba(255, 107, 107, 0.5); }
.page-faq .faq-rail__dot--green { background: var(--gxy-green); box-shadow: 0 0 10px rgba(85, 214, 166, 0.5); }

.page-faq .faq-rail__back {
  width: 100%;
  justify-content: center;
}

/* ---------- 筛选区 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-flow__head {
  padding-bottom: clamp(18px, 3vw, 28px);
  border-bottom: 1px solid var(--faq-soft-line);
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .faq-flow__head .gxy-title--sm {
  margin: 8px 0 12px;
}

.page-faq .faq-flow__note {
  margin: 0 0 20px;
  max-width: 38em;
  color: var(--gxy-muted);
  font-size: 15px;
  line-height: 1.8;
}

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

/* ---------- 问答块 ---------- */
.page-faq .faq-blocks {
  display: grid;
  gap: clamp(40px, 6vw, 72px);
}

.page-faq .faq-block[data-topic="cyan"] { --faq-accent: var(--gxy-cyan); }
.page-faq .faq-block[data-topic="gold"] { --faq-accent: var(--gxy-gold); }
.page-faq .faq-block[data-topic="coral"] { --faq-accent: var(--gxy-coral); }

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

.page-faq .faq-block__no {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--faq-accent);
  padding-top: 8px;
}

.page-faq .faq-block__title {
  margin: 0 0 8px;
  font-family: var(--gxy-font-display);
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--gxy-ink);
}

.page-faq .faq-block__desc {
  margin: 0;
  max-width: 34em;
  color: var(--gxy-muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-block__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 28px);
  align-items: start;
}

/* 问答条目 */
.page-faq .faq-items {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-faq .faq-item {
  position: relative;
  background: linear-gradient(180deg, rgba(18, 26, 46, 0.92), rgba(11, 16, 32, 0.92));
  border: 1px solid var(--faq-soft-line);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-item[open] {
  border-color: rgba(91, 107, 140, 0.55);
  background: linear-gradient(180deg, rgba(22, 32, 56, 0.96), rgba(12, 18, 36, 0.96));
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--faq-accent);
  outline-offset: -3px;
}

.page-faq .faq-item__no {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gxy-line);
  padding-top: 3px;
}

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

.page-faq .faq-item__q {
  font-family: var(--gxy-font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--gxy-ink);
}

.page-faq .faq-item__link {
  font-size: 12px;
  color: var(--gxy-line);
  text-decoration: none;
  padding: 2px 2px 2px 6px;
}

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

.page-faq .faq-item__body {
  position: relative;
  padding: 0 18px 18px 48px;
  margin-top: -2px;
}

.page-faq .faq-item__body::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 2px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--faq-accent), transparent);
  opacity: 0.55;
}

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--gxy-muted);
}

/* 图 */
.page-faq .faq-figure,
.page-faq .faq-help__media {
  margin: 0;
  border: 1px solid var(--faq-soft-line);
  background:
    radial-gradient(340px 200px at 20% 10%, rgba(61, 225, 255, 0.12), transparent 70%),
    linear-gradient(180deg, rgba(18, 26, 46, 0.9), rgba(7, 11, 20, 0.9));
  padding: 10px;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.page-faq .faq-figure img,
.page-faq .faq-help__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 1px;
}

.page-faq .faq-figure__cap {
  display: block;
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--gxy-muted);
}

/* 版本对照 */
.page-faq .faq-compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-compare__col {
  padding: 16px;
  border: 1px solid var(--faq-soft-line);
  background: rgba(11, 16, 32, 0.75);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.page-faq .faq-compare__col--new {
  border-color: rgba(246, 200, 106, 0.42);
  background: linear-gradient(180deg, rgba(246, 200, 106, 0.08), rgba(11, 16, 32, 0.85));
}

.page-faq .faq-compare__h {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.12em;
}

.page-faq .faq-compare__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
  display: grid;
  gap: 8px;
}

.page-faq .faq-compare__list li {
  counter-increment: step;
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--gxy-muted);
}

.page-faq .faq-compare__list li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--gxy-font-mono);
  font-size: 11px;
  color: var(--gxy-line);
  flex: none;
}

.page-faq .faq-compare__col--new .faq-compare__list li { color: var(--gxy-ink); }

.page-faq .faq-compare__badge {
  display: inline-block;
  margin: 14px 0 0;
  padding: 3px 10px;
  font-family: var(--gxy-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gxy-bg);
  background: var(--gxy-gold);
  border-radius: 999px;
}

/* 工具卡 */
.page-faq .faq-tools {
  align-items: start;
}

.page-faq .faq-tool {
  padding: 20px;
  background: var(--faq-panel-bg);
}

.page-faq .faq-tool__no {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gxy-coral);
}

.page-faq .faq-tool__name {
  margin: 0 0 10px;
  font-family: var(--gxy-font-display);
  font-size: 19px;
  font-weight: 800;
  color: var(--gxy-ink);
}

.page-faq .faq-tool__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--gxy-muted);
}

/* 帮助面板 */
.page-faq .faq-help {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 28px);
  padding: clamp(20px, 3vw, 32px);
  background:
    radial-gradient(420px 240px at 88% 0%, rgba(246, 200, 106, 0.14), transparent 70%),
    var(--faq-panel-bg);
}

.page-faq .faq-help__body > .gxy-mono {
  margin: 0 0 12px;
  letter-spacing: 0.14em;
  font-size: 11px;
}

.page-faq .faq-help__text {
  margin: 0 0 18px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--gxy-muted);
}

.page-faq .faq-help__meta {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-help__meta li {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gxy-ink);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--faq-soft-line);
}

.page-faq .faq-help__meta .gxy-mono {
  flex: none;
  min-width: 44px;
  font-size: 11px;
  color: var(--gxy-muted);
  padding-top: 2px;
}

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

.page-faq .faq-help__media { align-self: start; }

.page-faq .faq-foot-return {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--faq-soft-line);
}

.page-faq .faq-foot-return__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gxy-muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

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

  .page-faq .faq-help {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    display: block;
  }

  .page-faq .faq-block__split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-block__split--reverse {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-faq .faq-block__split--reverse .faq-compare {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-item > summary {
    padding: 18px 22px;
  }

  .page-faq .faq-item__body {
    padding: 0 22px 20px 54px;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-item > summary {
    padding: 14px 14px;
    gap: 8px;
  }

  .page-faq .faq-item__body {
    padding: 0 14px 16px 34px;
  }

  .page-faq .faq-item__body::before {
    left: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-rail__list a {
    transition: none;
  }
}
<<<END>>>