.page-faq {
  --faq-edge: var(--ink-700);
  --faq-soft: rgba(17, 28, 49, .72);
  --faq-paper-edge: var(--paper-300);
  display: block;
  color: var(--text-100);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background:
    radial-gradient(115% 95% at 88% -10%, rgba(47, 227, 208, .16), transparent 62%),
    radial-gradient(80% 70% at 6% 110%, rgba(255, 122, 51, .10), transparent 60%),
    linear-gradient(180deg, var(--ink-850), var(--ink-950));
  border-bottom: 1px solid var(--faq-edge);
  padding: clamp(30px, 6vw, 62px) 0 clamp(26px, 5vw, 46px);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: var(--gap-lg);
}

.page-faq .faq-hero-copy .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 6px 12px;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-pill);
  background: rgba(47, 227, 208, .08);
  color: var(--cyan-400);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(28px, 6.2vw, 54px);
  line-height: 1.22;
  letter-spacing: .04em;
  color: var(--text-100);
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.85;
  color: var(--text-400);
}

.page-faq .faq-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-sm);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 12px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--r-sm);
  background: var(--faq-soft);
}

.page-faq .faq-stat-num {
  font-size: 22px;
  line-height: 1;
  color: var(--cyan-400);
}

.page-faq .faq-stat:last-child .faq-stat-num {
  color: var(--neon-500);
}

.page-faq .faq-stat-label {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--text-400);
}

/* ---------- 归位线 ---------- */
.page-faq .faq-rail {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: clamp(18px, 3vw, 28px) 0 0;
}

.page-faq .faq-rail-line {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-rail-dot {
  flex: none;
}

.page-faq .faq-rail-link {
  flex: none;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-400);
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms var(--ease);
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  color: var(--cyan-400);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--gap-lg);
  padding-top: clamp(20px, 4vw, 36px);
  padding-bottom: clamp(40px, 7vw, 80px);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-400);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index-list > li {
  flex: none;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--faq-edge);
  border-radius: var(--r-pill);
  background: var(--faq-soft);
  color: var(--text-400);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--text-100);
  border-color: var(--cyan-400);
  background: rgba(47, 227, 208, .10);
}

.page-faq .faq-index-num {
  font-size: 12px;
  color: var(--cyan-400);
}

.page-faq .faq-index-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-400);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: clamp(30px, 5vw, 56px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

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

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--faq-edge);
}

.page-faq .faq-group-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 27px);
  line-height: 1.3;
  letter-spacing: .02em;
  color: var(--text-100);
}

.page-faq .faq-count {
  margin-left: auto;
  flex: none;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan-400);
  transition: color 200ms var(--ease);
}

.page-faq .faq-group:not(:has(details[open])) .faq-count {
  color: var(--neon-500);
}

.page-faq .faq-group-lead {
  margin: 0 0 18px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-400);
}

.page-faq .faq-group-lead a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 208, .4);
}

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

.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-edge);
  border-radius: var(--r-md);
  background: var(--ink-850);
  transition: background 220ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-item[open] {
  background: var(--ink-800);
  border-color: rgba(47, 227, 208, .34);
}

.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 18px;
  color: var(--text-100);
  transition: color 160ms var(--ease);
}

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

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

.page-faq .faq-item summary:hover {
  color: #FFFFFF;
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: -2px;
  border-radius: var(--r-md);
}

.page-faq .faq-q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(15px, 1.4vw, 16.5px);
  line-height: 1.6;
  letter-spacing: .01em;
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: none;
  width: 20px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.5;
  color: var(--cyan-400);
  transition: color 160ms var(--ease), transform 200ms var(--ease);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--neon-500);
}

.page-faq .faq-answer {
  padding: 0 18px 18px;
  border-top: 1px dashed rgba(30, 44, 72, .9);
  padding-top: 14px;
  margin-top: 2px;
  color: var(--text-400);
  font-size: 14.5px;
  line-height: 1.85;
}

.page-faq .faq-answer p {
  margin: 0;
  max-width: 66ch;
}

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

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--faq-edge);
  border-radius: var(--r-md);
  object-fit: cover;
}

.page-faq .faq-figure--paper img {
  border-color: var(--faq-paper-edge);
  box-shadow: 0 18px 40px -28px rgba(0, 0, 0, .9);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  line-height: 1.7;
  color: var(--text-400);
}

/* ---------- 页脚上方信任块 ---------- */
.page-faq .faq-trust {
  border-top: 1px solid var(--faq-edge);
  background: linear-gradient(180deg, var(--ink-950), #070C18);
  padding: clamp(24px, 4vw, 38px) 0 clamp(28px, 5vw, 46px);
}

.page-faq .faq-trust-inner {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.page-faq .faq-trust-inner .status-dot {
  flex: none;
  margin-top: 7px;
}

.page-faq .faq-trust-inner p {
  margin: 0;
  max-width: 82ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 880px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.75fr) minmax(210px, .8fr);
    align-items: end;
    gap: var(--gap-xl);
  }

  .page-faq .faq-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: var(--gap-xl);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0 0 0 1px;
    margin-left: 5px;
    border-left: 1px solid var(--faq-edge);
  }

  .page-faq .faq-index-list > li {
    flex: 1 1 auto;
  }

  .page-faq .faq-index-link {
    position: relative;
    border: 0;
    border-radius: 0;
    background: transparent;
    padding: 11px 10px 11px 16px;
    white-space: normal;
  }

  .page-faq .faq-index-link::before {
    content: "";
    position: absolute;
    left: -5px;
    top: 50%;
    transform: translateY(-50%);
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--ink-700);
    transition: background 160ms var(--ease), box-shadow 160ms var(--ease);
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    background: transparent;
    border-color: transparent;
    color: var(--text-100);
  }

  .page-faq .faq-index-link:hover::before,
  .page-faq .faq-index-link:focus-visible::before {
    background: var(--cyan-400);
    box-shadow: 0 0 0 4px rgba(47, 227, 208, .18);
  }

  .page-faq .faq-index-name {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 14.5px;
  }

  .page-faq .faq-index-num {
    flex: none;
  }

  .page-faq .faq-index-note {
    margin-top: 18px;
    padding-left: 6px;
    font-size: 12.5px;
  }

  .page-faq .faq-figure {
    max-width: 720px;
  }
}

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