.page-faq {
  --faq-rail-w: 268px;
  --faq-accent: var(--violet);
  display: block;
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: 88px;
}

.page-faq .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-breadcrumb {
  padding-top: 20px;
  padding-bottom: 4px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-faint);
}

.page-faq .faq-breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}

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

.page-faq .faq-breadcrumb [aria-current="page"] {
  color: var(--violet);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 20px 0 32px;
}

.page-faq .faq-hero-inner {
  position: relative;
  overflow: hidden;
  padding: 28px 20px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(162deg, var(--ink-800) 0%, var(--ink-900) 72%);
  box-shadow: var(--shadow-plate);
}

.page-faq .faq-hero-inner::after {
  content: "";
  position: absolute;
  top: -140px;
  right: -100px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(124, 77, 255, 0.3), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-kicker {
  position: relative;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--violet);
}

.page-faq .faq-h1 {
  position: relative;
  margin: 0 0 18px;
  max-width: 20ch;
  font-family: var(--font-head);
  font-size: clamp(32px, 6.4vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-faq .faq-lede {
  position: relative;
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-hero-facts {
  position: relative;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-soft);
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px 20px;
}

.page-faq .faq-hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-fact-num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-faq .faq-fact-label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-faint);
}

/* ---------- 工作区布局 ---------- */
.page-faq .faq-workspace {
  padding-top: 8px;
}

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

/* ---------- 左侧索引 ---------- */
.page-faq .faq-rail-inner {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-plate);
}

.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.page-faq .faq-rail-list {
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-rail-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  border-radius: 8px;
  white-space: nowrap;
  text-decoration: none;
  font-size: 14px;
  color: var(--text-dim);
  transition: color var(--dur-fast) var(--ease),
    background-color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  color: var(--text);
  background: var(--ink-700);
  border-left-color: var(--violet);
}

.page-faq .faq-rail-link:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

.page-faq .faq-rail-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--violet);
}

.page-faq .faq-rail-figure {
  margin: 16px 0 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.page-faq .faq-rail-figure img {
  display: block;
  width: 100%;
  height: 96px;
  object-fit: cover;
  opacity: 0.72;
}

/* ---------- 问答正文 ---------- */
.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: 44px;
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group-head {
  padding-bottom: 14px;
}

.page-faq .faq-group-num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--violet);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
}

.page-faq .faq-group-note {
  margin: 0 0 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-faint);
}

.page-faq .faq-path-svg {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  margin: 0 0 22px;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  position: relative;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--violet);
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease);
}

.page-faq .faq-item[open]::before {
  opacity: 1;
}

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, var(--violet-dim), transparent 34%);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 14px 18px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--text);
  transition: color var(--dur-fast) var(--ease);
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-q:hover {
  color: var(--cyan);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: -2px;
  border-radius: 8px;
}

.page-faq .faq-q-num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--violet);
}

.page-faq .faq-q-text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-q-mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  margin-left: auto;
}

.page-faq .faq-q-mark::before,
.page-faq .faq-q-mark::after {
  content: "";
  position: absolute;
  background: var(--text-dim);
  transition: transform var(--dur-fast) var(--ease),
    background-color var(--dur-fast) var(--ease);
}

.page-faq .faq-q-mark::before {
  top: 2px;
  bottom: 2px;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-faq .faq-q-mark::after {
  top: 50%;
  left: 2px;
  right: 2px;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-item[open] .faq-q-mark::before {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-item[open] .faq-q-mark::after {
  background: var(--gold);
}

.page-faq .faq-a {
  padding: 0 14px 22px 42px;
}

.page-faq .faq-a p {
  margin: 0 0 10px;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

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

/* ---------- 人工帮助 ---------- */
.page-faq .faq-help {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-help-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding: 26px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--violet);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-plate);
}

.page-faq .faq-help-title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
}

.page-faq .faq-help-text {
  margin: 0 0 12px;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

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

.page-faq .faq-channels {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.page-faq .faq-channel {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--ink-700);
}

.page-faq .faq-channel-key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.page-faq .faq-channel-value {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--text);
  word-break: break-word;
}

/* ---------- 显现动效 ---------- */
.page-faq [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-faq .faq-q-mark::before,
  .page-faq .faq-q-mark::after,
  .page-faq .faq-item::before,
  .page-faq .faq-rail-link {
    transition: none;
  }
}

/* ---------- 中屏 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero-inner {
    padding: 36px 32px 32px;
  }

  .page-faq .faq-hero {
    padding: 28px 0 40px;
  }

  .page-faq .faq-rail-inner {
    padding: 20px;
  }

  .page-faq .faq-rail-figure img {
    height: 132px;
  }

  .page-faq .faq-q {
    padding: 20px 18px 20px 18px;
    font-size: 16px;
  }

  .page-faq .faq-a {
    padding: 0 18px 24px 48px;
  }

  .page-faq .faq-channel {
    flex-direction: row;
    align-items: baseline;
    gap: 18px;
  }

  .page-faq .faq-channel-key {
    flex: 0 0 88px;
  }

  .page-faq .faq-help-card {
    padding: 32px 28px;
  }
}

/* ---------- 桌面：左索引 + 右正文 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-workspace-inner {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

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

  .page-faq .faq-rail-list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
    padding-bottom: 0;
  }

  .page-faq .faq-rail-link {
    white-space: normal;
  }

  .page-faq .faq-rail-figure img {
    height: 168px;
  }

  .page-faq .faq-body {
    gap: 56px;
  }

  .page-faq .faq-help-card {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    padding: 40px 36px;
  }

  .page-faq .faq-hero-inner {
    padding: 48px 44px 42px;
  }
}
<<<END>>>