.page-faq {
  background: var(--c-void);
  color: var(--body-text);
  position: relative;
}

/* ---------- 面包屑 ---------- */
.page-faq__top {
  padding: 22px 0 0;
}

.page-faq .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--c-steel);
}

.page-faq .breadcrumbs a {
  color: var(--c-steel);
  text-decoration: none;
  transition: color var(--dur) ease;
}

.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--c-green-soft);
}

.page-faq .breadcrumbs a[aria-current="page"] {
  color: var(--c-green);
}

.page-faq__crumb-sep {
  color: rgba(124, 141, 163, 0.6);
}

/* ---------- 首屏 ---------- */
.page-faq__hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
}

.page-faq__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(244, 246, 248, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(244, 246, 248, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 90% at 78% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(120% 90% at 78% 0%, #000 0%, transparent 72%);
  pointer-events: none;
}

.page-faq__hero-inner {
  position: relative;
  padding: 36px 0 44px;
  display: grid;
  gap: 18px;
}

.page-faq__hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 7.2vw, 3.75rem);
  line-height: 1.12;
  font-weight: 700;
  color: var(--c-white);
  letter-spacing: 0.01em;
  max-width: 20ch;
}

.page-faq__lead {
  max-width: 64ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--body-text);
}

.page-faq__hero-stats {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq__stat {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 10px 15px;
  border: 1px solid var(--rule-strong);
  background: rgba(18, 41, 74, 0.72);
}

.page-faq__stat b {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--c-green);
  line-height: 1.1;
}

.page-faq__stat span {
  font-size: var(--fs-12);
  color: var(--c-steel);
  letter-spacing: 0.02em;
}

/* ---------- 章节索引 ---------- */
.page-faq__toc {
  background: var(--c-night);
  border-bottom: 1px solid var(--rule);
}

.page-faq__toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq__toc-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 15px 18px;
  border-right: 1px solid var(--rule);
  font-size: var(--fs-14);
  color: var(--body-text);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--dur) ease, color var(--dur) ease;
}

.page-faq__toc-link:hover,
.page-faq__toc-link:focus-visible {
  background: rgba(56, 224, 123, 0.12);
  color: var(--c-white);
}

.page-faq__toc-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-12);
  color: var(--c-green);
}

/* ---------- 章节骨架 ---------- */
.page-faq__section {
  padding: 52px 0;
  border-bottom: 1px solid var(--rule);
  scroll-margin-top: 96px;
}

.page-faq__section--last {
  border-bottom: 0;
  padding-bottom: 56px;
}

.page-faq__sec-head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  margin-bottom: 30px;
}

.page-faq__sec-num {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--c-green);
  color: var(--c-void);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-16);
  font-weight: 700;
}

.page-faq__sec-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 5vw, 2.4rem);
  line-height: 1.24;
  font-weight: 700;
  color: var(--c-white);
}

.page-faq__sec-intro {
  margin-top: 10px;
  max-width: 62ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--body-text);
}

/* ---------- 两栏 ---------- */
.page-faq__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-faq__aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq__sub {
  font-family: var(--font-body);
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--c-white);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
}

.page-faq__aside p {
  font-size: var(--fs-14);
  line-height: 1.85;
}

.page-faq__aside a {
  color: var(--c-green-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 步骤 ---------- */
.page-faq__steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq__step {
  position: relative;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 26px;
}

.page-faq__step::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 40px;
  bottom: 0;
  border-left: 1px dashed var(--rule-strong);
}

.page-faq__step:last-child {
  padding-bottom: 0;
}

.page-faq__step:last-child::before {
  display: none;
}

.page-faq__step-num {
  position: relative;
  z-index: 1;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: var(--c-void);
  border: 1px solid var(--c-green);
  color: var(--c-green);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-14);
  font-weight: 700;
}

.page-faq__step-body h3 {
  font-family: var(--font-body);
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--c-white);
  margin: 7px 0 6px;
}

.page-faq__step-body p {
  font-size: var(--fs-14);
  line-height: 1.85;
}

/* ---------- 图片框 ---------- */
.page-faq .media-frame {
  display: block;
  margin: 0;
  border: 1px solid var(--rule-strong);
  background: var(--c-night);
  overflow: hidden;
}

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

/* ---------- 提示条 ---------- */
.page-faq__note {
  padding: 14px 16px;
  background: rgba(255, 166, 48, 0.08);
  border-left: 3px solid var(--c-amber);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--body-text);
}

.page-faq__note a {
  color: var(--c-green-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 同步状态 ---------- */
.page-faq__states {
  display: grid;
  gap: 10px;
}

.page-faq .state-bar {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 6px 12px;
  padding: 14px 16px;
  border: 1px solid var(--rule);
  background: var(--c-night);
}

.page-faq .state-bar strong {
  font-family: var(--font-body);
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--c-white);
}

.page-faq .state-bar span:last-child {
  grid-column: 2;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--body-text);
}

.page-faq .state-bar-dot {
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border-radius: 50%;
  display: block;
}

.page-faq .state-bar[data-state="synced"] {
  border-left: 3px solid var(--c-green);
}

.page-faq .state-bar[data-state="synced"] .state-bar-dot {
  background: var(--c-green);
  box-shadow: 0 0 0 4px rgba(56, 224, 123, 0.18);
}

.page-faq .state-bar[data-state="syncing"] {
  border-left: 3px solid var(--c-amber);
}

.page-faq .state-bar[data-state="syncing"] .state-bar-dot {
  background: var(--c-amber);
  box-shadow: 0 0 0 4px rgba(255, 166, 48, 0.18);
  animation: faq-dot-pulse 1.4s ease-in-out infinite;
}

.page-faq .state-bar[data-state="expired"] {
  border-left: 3px solid var(--c-steel);
}

.page-faq .state-bar[data-state="expired"] .state-bar-dot {
  background: var(--c-steel);
}

@keyframes faq-dot-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ---------- 筛选组合 ---------- */
.page-faq__combos {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq__combo {
  display: grid;
  gap: 10px;
  padding: 20px;
  background: var(--c-night);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--c-green);
}

.page-faq__combo h3 {
  font-family: var(--font-body);
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--c-white);
}

.page-faq__combo p {
  font-size: var(--fs-14);
  line-height: 1.8;
}

.page-faq__chain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--c-steel);
  font-size: var(--fs-12);
}

.page-faq__chain .tag {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-12);
}

/* ---------- 联系与清单 ---------- */
.page-faq__contact {
  display: grid;
  gap: 16px;
  padding: 22px;
  background: var(--c-stand);
  border: 1px solid var(--rule-strong);
  align-content: start;
}

.page-faq__contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
}

.page-faq__contact-label {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--c-green-soft);
}

.page-faq__contact-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-16);
  color: var(--c-white);
  word-break: break-all;
}

.page-faq__contact-note {
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(244, 246, 248, 0.86);
  padding-top: 4px;
  border-top: 1px solid rgba(244, 246, 248, 0.16);
}

.page-faq__checklist {
  list-style: none;
  margin: 0 0 4px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq__checklist li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  font-size: var(--fs-14);
  line-height: 1.75;
}

.page-faq__tick {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  display: grid;
  place-items: center;
  border: 1px solid var(--c-green);
  color: var(--c-green);
  font-size: 12px;
  line-height: 1;
}

/* ---------- 手机端要点 ---------- */
.page-faq__tips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-faq__tip {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 14px;
}

.page-faq__tip-mark {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  background: var(--c-green);
  color: var(--c-void);
  font-size: 13px;
  line-height: 1;
}

.page-faq__tip h3 {
  font-family: var(--font-body);
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--c-white);
  margin-bottom: 5px;
}

.page-faq__tip p {
  font-size: var(--fs-14);
  line-height: 1.8;
}

/* ---------- 速答 ---------- */
.page-faq__qa {
  border-top: 1px solid var(--rule);
}

.page-faq .disclosure {
  border-bottom: 1px solid var(--rule);
}

.page-faq .disclosure-trigger {
  width: 100%;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 0;
  background: transparent;
  border: 0;
  text-align: left;
  font-family: var(--font-body);
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--c-white);
  cursor: pointer;
  transition: color var(--dur) ease;
}

.page-faq .disclosure-trigger:hover,
.page-faq .disclosure-trigger:focus-visible {
  color: var(--c-green-soft);
}

.page-faq .disclosure-trigger::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  line-height: 1;
  color: var(--c-green);
}

.page-faq .disclosure-trigger[aria-expanded="true"]::after {
  content: "−";
}

.page-faq__qa-num {
  flex: none;
  width: 24px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-12);
  color: var(--c-steel);
}

.page-faq .disclosure-panel {
  padding: 0 0 22px 38px;
}

.page-faq .disclosure-panel p {
  max-width: 66ch;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--body-text);
}

/* ---------- 收尾 ---------- */
.page-faq__end {
  margin-top: 40px;
  padding: 24px;
  border: 1px solid var(--rule-strong);
  background: linear-gradient(90deg, rgba(20, 58, 44, 0.9), rgba(18, 41, 74, 0.4));
  display: grid;
  gap: 16px;
}

.page-faq__end p {
  font-family: var(--font-display);
  font-size: var(--fs-20);
  line-height: 1.5;
  color: var(--c-white);
}

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

/* ---------- 移动端常驻入口 ---------- */
.page-faq__dock {
  display: none;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-faq__combos {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq__hero-inner {
    padding: 48px 0 56px;
  }

  .page-faq__section {
    padding: 72px 0;
  }

  .page-faq .disclosure-panel {
    padding-left: 38px;
  }
}

@media (min-width: 900px) {
  .page-faq__split {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

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

  .page-faq__hero h1 {
    max-width: 22ch;
  }

  .page-faq__sec-head {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 22px;
    margin-bottom: 36px;
  }

  .page-faq__sec-num {
    width: 56px;
    height: 56px;
    font-size: var(--fs-20);
  }
}

/* ---------- 移动端专属 ---------- */
@media (max-width: 899px) {
  .page-faq {
    padding-bottom: 84px;
  }

  .page-faq__dock {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 10px;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    padding: 10px 14px;
    background: rgba(10, 26, 47, 0.95);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--rule-strong);
  }

  .page-faq__dock .btn {
    justify-content: center;
    width: 100%;
    padding-left: 8px;
    padding-right: 8px;
    font-size: var(--fs-14);
  }

  .page-faq .disclosure-panel {
    padding-left: 0;
  }

  .page-faq__end {
    padding: 20px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .state-bar[data-state="syncing"] .state-bar-dot {
    animation: none;
  }

  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
  }
}
<<<END>>>