.page-faq {
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 顶部区 ---------- */
.page-faq .faq-top {
  position: relative;
  padding-top: clamp(14px, 3vw, 26px);
  background:
    radial-gradient(120% 80% at 88% -20%, rgba(75, 224, 198, 0.14), transparent 62%),
    radial-gradient(90% 60% at 0% 0%, rgba(200, 255, 74, 0.09), transparent 70%),
    linear-gradient(180deg, var(--panel) 0%, var(--ink) 84%);
  border-bottom: 1px solid var(--line-faint);
  isolation: isolate;
}

.page-faq .faq-top::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(44, 92, 79, 0.18) 1px, transparent 1px);
  background-size: 88px 100%;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 90%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 90%);
  pointer-events: none;
  z-index: -1;
}

.page-faq .faq-top-grid {
  display: grid;
  gap: 26px;
  padding: clamp(20px, 4vw, 40px) 0 clamp(22px, 4vw, 38px);
}

.page-faq .faq-top-main {
  position: relative;
  min-width: 0;
}

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

.page-faq .faq-top-main h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.05rem, 8vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 16px 0 0;
  max-width: 15ch;
  color: var(--paper);
}

.page-faq .faq-top-main h1 em {
  font-style: normal;
  color: var(--lime);
}

.page-faq .faq-lead {
  margin: 20px 0 0;
  max-width: 56ch;
  color: var(--muted);
  font-size: clamp(0.9375rem, 1.6vw, 1.0625rem);
  line-height: 1.85;
}

.page-faq .faq-top-side {
  display: grid;
  gap: 10px;
}

.page-faq .faq-side-card {
  border: 1px solid var(--line-faint);
  border-left: 2px solid var(--cyan);
  background: rgba(11, 15, 13, 0.62);
  padding: 13px 16px;
  min-width: 0;
}

.page-faq .faq-side-card--orange {
  border-left-color: var(--orange);
}

.page-faq .faq-side-strong {
  margin: 9px 0 0;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-side-note {
  margin: 5px 0 0;
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 顶部横向索引 ---------- */
.page-faq .faq-jump {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 22px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-jump a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--line-soft);
  background: rgba(16, 28, 24, 0.75);
  color: var(--paper);
  text-decoration: none;
  font-size: 0.8125rem;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-jump a .num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--cyan);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
  background: rgba(200, 255, 74, 0.08);
}

.page-faq .faq-jump a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 28px;
  padding-block: clamp(28px, 5vw, 56px) clamp(48px, 7vw, 96px);
}

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

.page-faq .faq-coord-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-faq .faq-coord-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-coord-list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-coord-list a {
  flex: 0 0 auto;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--line-faint);
  color: var(--muted);
  text-decoration: none;
  font-size: 0.8125rem;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-coord-num {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--lime);
}

.page-faq .faq-coord-list a:hover,
.page-faq .faq-coord-list a:focus-visible {
  color: var(--paper);
  border-color: var(--lime);
}

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

/* ---------- 媒体 ---------- */
.page-faq .faq-media {
  margin: 0 0 clamp(24px, 4vw, 38px);
  border: 1px solid var(--line-faint);
  background: var(--panel);
  overflow: hidden;
}

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

.page-faq .faq-media .media-caption {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line-faint);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 92px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 6vw, 62px);
}

.page-faq .faq-group-head {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group-head > div {
  min-width: 0;
}

.page-faq .faq-group-head h2 {
  margin: 3px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.2rem, 3.2vw, 1.7rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group-head p {
  margin: 8px 0 0;
  max-width: 52ch;
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-faint);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 22px;
  gap: 11px;
  align-items: start;
  padding: 17px 4px 17px 0;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s var(--ease);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-q-index {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
  padding-top: 4px;
}

.page-faq .faq-q-text {
  font-size: clamp(0.9375rem, 2.2vw, 1.0625rem);
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-q-mark {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  border: 1px solid var(--line-soft);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-q-mark::before,
.page-faq .faq-q-mark::after {
  content: "";
  position: absolute;
  background: var(--lime);
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-q-mark::before {
  left: 5px;
  right: 5px;
  top: 10px;
  height: 1px;
}

.page-faq .faq-q-mark::after {
  top: 5px;
  bottom: 5px;
  left: 10px;
  width: 1px;
}

.page-faq .faq-item summary:hover .faq-q-text {
  color: var(--lime-dim);
}

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

.page-faq .faq-item[open] summary {
  background: rgba(23, 62, 51, 0.28);
}

.page-faq .faq-item[open] .faq-q-index {
  color: var(--lime);
}

.page-faq .faq-item[open] .faq-q-mark {
  border-color: var(--lime);
  background: rgba(200, 255, 74, 0.1);
}

.page-faq .faq-item[open] .faq-q-mark::after {
  transform: scaleY(0);
}

.page-faq .faq-a {
  padding: 0 4px 20px calc(34px + 11px);
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.page-faq .faq-a p {
  margin: 0 0 9px;
}

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

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ---------- 同步四步 ---------- */
.page-faq .faq-group .faq-media {
  margin-top: 22px;
}

.page-faq .faq-flow {
  list-style: none;
  margin: 0 0 6px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-faint);
  border: 1px solid var(--line-faint);
}

.page-faq .faq-flow li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 13px 14px;
  background: var(--panel);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--muted);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-flow li:hover {
  background: var(--zone);
  color: var(--paper);
}

.page-faq .faq-flow-num {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--lime);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  border-top: 1px solid var(--line-soft);
  background:
    linear-gradient(115deg, rgba(23, 62, 51, 0.92) 0%, rgba(11, 15, 13, 0.96) 68%),
    var(--panel);
  padding-block: clamp(34px, 6vw, 70px);
}

.page-faq .faq-cta-inner {
  display: grid;
  gap: 24px;
}

.page-faq .faq-cta h2 {
  margin: 13px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4.2vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-cta p {
  margin: 12px 0 0;
  max-width: 46ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--muted);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-top-side {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 720px) {
  .page-faq .faq-item summary {
    grid-template-columns: 48px minmax(0, 1fr) 22px;
    gap: 12px;
  }

  .page-faq .faq-a {
    padding-left: calc(48px + 12px);
    padding-bottom: 22px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-top-grid {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 290px);
    gap: 42px;
    align-items: end;
  }

  .page-faq .faq-top-side {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-vnote {
    display: block;
    position: absolute;
    right: 0;
    top: 6px;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.32em;
    color: var(--muted);
    opacity: 0.55;
  }

  .page-faq .faq-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 40px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 54px;
  }

  .page-faq .faq-coord {
    position: sticky;
    top: 92px;
    align-self: start;
  }

  .page-faq .faq-coord-list {
    display: grid;
    gap: 0;
    overflow: visible;
  }

  .page-faq .faq-coord-list a {
    border: 0;
    border-top: 1px solid var(--line-faint);
    padding: 11px 0;
    font-size: 0.875rem;
  }

  .page-faq .faq-coord-list li:last-child a {
    border-bottom: 1px solid var(--line-faint);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-coord-list a,
  .page-faq .faq-item summary,
  .page-faq .faq-q-text,
  .page-faq .faq-q-mark,
  .page-faq .faq-q-mark::before,
  .page-faq .faq-q-mark::after,
  .page-faq .faq-flow li {
    transition-duration: 0.01ms;
  }
}
<<<END>>>