.page-faq {
  --faq-rail: 216px;
  --faq-radius: 18px;
  padding-bottom: 88px;
}

.page-faq .breadcrumb {
  padding-top: 20px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 26px;
  padding: 22px 0 40px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero-copy h1 {
  font-size: clamp(1.85rem, 5.2vw, 3.1rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 10px 0 16px;
  color: var(--paper);
  max-width: 22ch;
}

.page-faq .faq-hero-copy .lede {
  max-width: 640px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
  margin: 0 0 22px;
}

.page-faq .faq-status {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-faq .faq-status-item {
  background: var(--ink-soft);
  padding: 16px 14px;
}

.page-faq .faq-status-value {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.35rem, 4.4vw, 1.85rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-faq .faq-status-value span {
  font-size: 0.5em;
  font-weight: 500;
  color: var(--muted);
  margin-left: 3px;
  letter-spacing: 0;
}

.page-faq .faq-status-item:nth-child(2) .faq-status-value {
  color: var(--orange);
}

.page-faq .faq-status-label {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 外壳：左轨 + 右侧问答流 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 20px;
  padding-top: 32px;
}

.page-faq .faq-rail {
  position: relative;
}

.page-faq .faq-rail-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}

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

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

.page-faq .faq-rail-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--ink-soft);
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-faq .faq-rail-link .mono {
  font-size: 11.5px;
  color: var(--muted);
}

.page-faq .faq-rail-link:hover {
  border-color: var(--cyan);
  color: var(--cyan-soft);
}

.page-faq .faq-rail-link[aria-current]:not([aria-current="false"]) {
  border-color: var(--cyan);
  background: rgba(34, 230, 211, 0.1);
  color: var(--cyan);
}

.page-faq .faq-rail-link[aria-current]:not([aria-current="false"]) .mono {
  color: var(--cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: 34px 0 6px;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 84px);
}

.page-faq .faq-group--last {
  padding-bottom: 8px;
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  margin-bottom: 20px;
}

.page-faq .faq-group-no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  opacity: 0.65;
}

.page-faq .faq-group-head h2 {
  font-size: clamp(1.25rem, 3.2vw, 1.65rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  color: var(--paper);
}

.page-faq .faq-group-head .text-muted {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-group-body {
  display: grid;
  gap: 22px;
}

/* ---------- 折叠面板 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .fold {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-soft);
  overflow: hidden;
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-faq .fold:hover {
  border-color: #2b4f78;
}

.page-faq .fold:has(.fold-head[aria-expanded="true"]) {
  border-color: var(--cyan);
  background: var(--panel);
}

.page-faq .fold-h {
  margin: 0;
}

.page-faq .fold-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 17px 18px;
  border: 0;
  background: none;
  color: var(--paper);
  font-family: inherit;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
}

.page-faq .fold-head:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -4px;
}

.page-faq .fold-no {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .fold-mark {
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.24s var(--ease);
}

.page-faq .fold-head[aria-expanded="true"] .fold-mark {
  transform: rotate(-135deg);
}

.page-faq .fold-body {
  display: none;
  padding: 2px 18px 22px;
}

.page-faq .fold-body:not([hidden]) {
  display: block;
}

.page-faq .fold-body p {
  margin: 0 0 12px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper);
}

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

.page-faq .fold-body .fold-lead {
  font-size: 16px;
  font-weight: 600;
  color: var(--cyan-soft);
  line-height: 1.7;
}

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

.page-faq .fold-body a:hover {
  color: var(--cyan-soft);
}

/* ---------- 三步排查 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faq-step;
  margin: 16px 0 16px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 46px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--paper);
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--orange);
}

/* ---------- 通栏图与侧栏图 ---------- */
.page-faq .faq-band {
  margin: 30px 0 0;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}

.page-faq .faq-band .media-frame {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-faq .faq-band .media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

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

.page-faq .faq-figure .media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-faq .faq-figure .media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 媒体框基础 ---------- */
.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 34px;
  }

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

  .page-faq .faq-group-body {
    grid-template-columns: minmax(0, 1fr) 240px;
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-rail-list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-rail-link {
    border-color: transparent;
    background: transparent;
    border-radius: var(--radius-pill);
    padding: 9px 14px;
    font-size: 14px;
  }

  .page-faq .faq-group {
    padding-top: 40px;
  }

  .page-faq .faq-group-body {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 30px;
  }

  .page-faq .faq-figure {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .fold-body {
    padding: 2px 22px 24px 60px;
  }

  .page-faq .fold-head {
    padding: 18px 22px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero {
    gap: 56px;
  }

  .page-faq .faq-group-body {
    grid-template-columns: minmax(0, 1fr) 320px;
  }
}
<<<END>>>