.page-faq {
  --faq-index-w: 236px;
  --faq-colgap: 72px;
  --faq-rail-offset: calc(var(--header-h) + 56px);
  background: var(--ink-900);
  color: var(--white-100);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-mast {
  position: relative;
  padding: calc(var(--header-h) + 56px) 0 56px;
  background:
    radial-gradient(120% 90% at 92% 0%, rgba(122, 92, 255, 0.18), transparent 60%),
    radial-gradient(90% 80% at 0% 105%, rgba(46, 242, 192, 0.10), transparent 58%),
    var(--ink-900);
  border-bottom: 1px solid var(--grid-600);
  overflow: hidden;
}

.page-faq .faq-mast::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, rgba(30, 74, 60, 0.55) 1px, transparent 1px);
  background-size: 88px 100%;
  opacity: 0.55;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 26%, #000 74%, transparent);
  mask-image: linear-gradient(180deg, transparent, #000 26%, #000 74%, transparent);
}

.page-faq .faq-mast-inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-mast .breadcrumb {
  margin-bottom: 20px;
}

.page-faq .faq-mast .eyebrow {
  display: block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--neon-500);
}

.page-faq .faq-mast h1 {
  margin: 0;
  max-width: 16ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8.2vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--white-100);
}

.page-faq .faq-lede {
  margin: 24px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted-400);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 40px 0 0;
  padding: 0;
  background: var(--grid-600);
  border: 1px solid var(--grid-600);
}

.page-faq .faq-stats > div {
  margin: 0;
  padding: 16px 18px;
  background: var(--ink-900);
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-faq .faq-stats dt {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted-400);
}

.page-faq .faq-stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--neon-500);
}

/* ---------- 横向分类条 ---------- */

.page-faq .faq-rail {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  background: rgba(10, 33, 26, 0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--grid-600);
}

.page-faq .faq-rail-track {
  display: flex;
  align-items: stretch;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-rail-track::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail-track a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 12px;
  white-space: nowrap;
  font-size: 14px;
  color: var(--muted-400);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-rail-track a:hover,
.page-faq .faq-rail-track a:focus-visible {
  color: var(--white-100);
  border-bottom-color: var(--neon-500);
}

.page-faq .faq-rail-track a .num {
  font-size: 12px;
  color: var(--neon-500);
}

/* ---------- 两栏骨架 ---------- */

.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding-top: 48px;
  padding-bottom: 88px;
}

.page-faq .faq-index {
  display: none;
}

.page-faq .faq-stream {
  min-width: 0;
}

/* ---------- 问题组 ---------- */

.page-faq .faq-group {
  position: relative;
  padding: 40px 0 44px;
  border-top: 1px solid var(--grid-600);
  scroll-margin-top: calc(var(--header-h) + 84px);
}

.page-faq .faq-group:first-of-type {
  border-top: 0;
  padding-top: 8px;
}

.page-faq .faq-group:target {
  background: linear-gradient(180deg, rgba(122, 92, 255, 0.06), transparent 55%);
}

.page-faq .faq-group-head {
  display: grid;
  gap: 12px;
  margin-bottom: 26px;
}

.page-faq .faq-group-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--neon-500);
}

.page-faq .faq-group:target .faq-group-num {
  color: var(--orange-500);
}

.page-faq .faq-group h2 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 5.4vw, 38px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--white-100);
}

.page-faq .faq-group-lede {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted-400);
}

.page-faq .faq-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-item {
  border-top: 1px solid var(--grid-600);
  background: transparent;
}

.page-faq .faq-item:first-of-type {
  border-top: 0;
}

.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) 20px;
  gap: 10px;
  align-items: start;
  padding: 17px 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white-100);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  color: var(--neon-500);
}

.page-faq .faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.25;
  text-align: right;
  color: var(--neon-500);
}

.page-faq .faq-item[open] summary::after {
  content: "\2013";
}

.page-faq .faq-q-num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--muted-400);
}

.page-faq .faq-item[open] .faq-q-num {
  color: var(--neon-500);
}

.page-faq .faq-answer {
  padding: 0 0 22px 42px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted-400);
}

.page-faq .faq-answer p {
  margin: 0 0 10px;
}

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

.page-faq .faq-answer a {
  color: var(--neon-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 242, 192, 0.42);
}

.page-faq .faq-answer a:hover {
  border-bottom-color: var(--neon-500);
}

.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 12px;
}

/* ---------- 配图 ---------- */

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

.page-faq .faq-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--grid-600);
  background: var(--panel-700);
}

.page-faq .faq-fig figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted-400);
  border-left: 2px solid var(--grid-600);
  padding-left: 10px;
}

/* ---------- 组尾收束 ---------- */

.page-faq .faq-end {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 26px;
}

.page-faq .faq-end .rule {
  flex: 1 1 auto;
}

.page-faq .faq-toindex {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted-400);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}

.page-faq .faq-toindex::before {
  content: "\2191";
  color: var(--neon-500);
}

.page-faq .faq-toindex:hover {
  color: var(--neon-500);
}

/* ---------- 联系组 ---------- */

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--grid-600);
  border: 1px solid var(--grid-600);
}

.page-faq .faq-steps li {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 20px 18px;
  background: var(--ink-800);
}

.page-faq .faq-step-num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  background: var(--neon-500);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
}

.page-faq .faq-steps strong {
  font-size: 15px;
  color: var(--white-100);
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted-400);
}

.page-faq .faq-support-panel {
  margin-bottom: 26px;
}

.page-faq .faq-support-panel .panel-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0;
}

.page-faq .faq-support-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--grid-600);
}

.page-faq .faq-support-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 16px 18px;
  background: var(--panel-700);
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted-400);
}

.page-faq .faq-support-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange-500);
}

.page-faq .faq-support-list a {
  color: var(--neon-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 242, 192, 0.42);
}

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

.page-faq .faq-index-note {
  margin: 18px 0 0;
  font-size: 12px;
  line-height: 1.75;
  color: var(--muted-400);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-support-list li {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-cols {
    grid-template-columns: minmax(0, 1fr) 296px;
    gap: 36px;
    align-items: start;
  }

  .page-faq .faq-cols--flip {
    grid-template-columns: 300px minmax(0, 1fr);
  }

  .page-faq .faq-answer {
    max-width: 60ch;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: var(--faq-colgap);
    padding-top: 72px;
    padding-bottom: 132px;
  }

  .page-faq .faq-index {
    display: block;
    position: sticky;
    top: var(--faq-rail-offset);
    align-self: start;
    scroll-margin-top: var(--faq-rail-offset);
  }

  .page-faq .faq-index .annotation {
    display: block;
    margin: 0 0 14px;
    color: var(--muted-400);
  }

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

  .page-faq .faq-index a {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 10px;
    align-items: baseline;
    padding: 11px 12px;
    border-left: 2px solid var(--grid-600);
    color: var(--muted-400);
    text-decoration: none;
    font-size: 14px;
    line-height: 1.5;
    transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
  }

  .page-faq .faq-index a:hover,
  .page-faq .faq-index a:focus-visible {
    color: var(--white-100);
    border-left-color: var(--neon-500);
    background: var(--panel-700);
  }

  .page-faq .faq-index a .num {
    font-size: 12px;
    color: var(--neon-500);
  }

  .page-faq .faq-group {
    padding: 56px 0 60px;
  }

  .page-faq .faq-group:first-of-type {
    padding-top: 0;
  }

  .page-faq .faq-group h2 {
    max-width: 20ch;
  }
}

@media (max-width: 1023px) {
  .page-faq .faq-toindex {
    display: none;
  }
}

@media (max-width: 599px) {
  .page-faq .faq-answer {
    padding-left: 0;
  }

  .page-faq .faq-item summary {
    grid-template-columns: 28px minmax(0, 1fr) 18px;
    gap: 8px;
    font-size: 15px;
  }
}

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