.page-faq {
  --faq-rail: 244px;
  --faq-grid-line: rgba(201, 190, 166, 0.5);
  background: var(--paper);
  color: var(--ink-soft);
}

/* ---------- 首屏头部 ---------- */
.page-faq .faq-masthead {
  position: relative;
  padding: 110px 0 44px;
  border-bottom: 1px solid var(--wood);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: -1px -1px;
}

.page-faq .faq-masthead .breadcrumb {
  margin: 0 0 26px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--wood);
}

.page-faq .faq-masthead .breadcrumb a {
  color: var(--wood);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .faq-masthead .breadcrumb a:hover {
  border-bottom-color: var(--dice);
  color: var(--dice);
}

.page-faq .faq-masthead .index-label {
  margin: 0 0 14px;
  color: var(--seal);
}

.page-faq .faq-masthead h1 {
  margin: 0 0 22px;
  max-width: 20ch;
  color: var(--ink);
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ---------- 三步引导带 ---------- */
.page-faq .faq-start {
  padding: 48px 0 24px;
}

.page-faq .faq-start .section-title {
  margin: 0 0 20px;
  color: var(--ink);
}

.page-faq .faq-start-map {
  margin: 0 0 40px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 40px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--wood);
  border-left: 1px solid var(--grid);
}

.page-faq .faq-step {
  padding: 26px 20px 24px;
  border-right: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
  background: var(--paper);
}

.page-faq .faq-step-no {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 32px;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--dice);
  margin-bottom: 16px;
}

.page-faq .faq-step .sub-title {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-step p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-step-meta {
  margin: 0;
  padding-top: 8px;
  border-top: 1px solid var(--grid);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--wood);
}

.page-faq .faq-start-panel {
  margin: 0;
  max-width: 660px;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-panel {
  padding: 40px 0 64px;
  border-top: 1px solid var(--wood);
}

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

.page-faq .faq-axis {
  position: static;
  margin: 0 0 32px;
  padding-top: 14px;
  border-top: 2px solid var(--wood);
}

.page-faq .faq-axis .axis-title {
  margin: 0 0 12px;
  color: var(--wood);
}

.page-faq .faq-axis .axis-list {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0 0 2px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-axis .axis-link {
  display: block;
  padding: 9px 14px;
  border-bottom: 2px solid transparent;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  white-space: nowrap;
  transition: color 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.page-faq .faq-axis .axis-link:hover {
  color: var(--ink);
  background: var(--paper-deep);
}

.page-faq .faq-axis .axis-link[data-current="true"] {
  color: var(--ink);
  border-color: var(--seal);
  background: var(--paper-deep);
}

.page-faq .faq-group + .faq-group {
  margin-top: 52px;
}

.page-faq .faq-group .section-title {
  margin: 0 0 8px;
  color: var(--ink);
}

.page-faq .faq-group-note {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 13px;
  line-height: 1.85;
  color: var(--wood);
}

.page-faq .faq-group-note a {
  color: var(--seal);
  text-decoration: none;
  border-bottom: 1px solid var(--seal);
}

.page-faq .faq-list {
  border-top: 1px solid var(--wood);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--grid);
  border-left: 2px solid transparent;
  transition: border-left-color 0.16s ease, background-color 0.16s ease;
}

.page-faq .faq-item[open] {
  border-left-color: var(--wood);
  background: rgba(237, 226, 200, 0.42);
}

.page-faq .faq-item summary {
  position: relative;
  display: block;
  padding: 16px 48px 16px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink);
}

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

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--wood);
}

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

.page-faq .faq-item summary:hover {
  color: var(--dice);
}

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

.page-faq .faq-answer {
  padding: 0 24px 18px 16px;
}

.page-faq .faq-answer p {
  margin: 0;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ---------- 术语表 ---------- */
.page-faq .faq-terms {
  padding: 8px 0 64px;
}

.page-faq .faq-terms .section-title {
  margin: 0 0 8px;
  color: var(--ink);
}

.page-faq .faq-terms-scroll {
  border-top: 1px solid var(--wood);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-terms-cap {
  caption-side: top;
  text-align: left;
  padding: 12px 0 14px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--wood);
}

.page-faq .faq-terms-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-terms-table th,
.page-faq .faq-terms-table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--grid);
  vertical-align: top;
}

.page-faq .faq-terms-table thead th {
  border-bottom: 1px solid var(--wood);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--wood);
  white-space: nowrap;
}

.page-faq .faq-terms-table tbody tr:nth-child(odd) {
  background: var(--paper-deep);
}

.page-faq .faq-terms-table td:first-child {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
}

.page-faq .faq-terms-table td:last-child {
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 兜底出口 ---------- */
.page-faq .faq-more {
  padding: 0 0 84px;
}

.page-faq .faq-more .sub-title {
  margin: 0 0 12px;
  color: var(--ink);
}

.page-faq .faq-more p {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .faq-more a {
  color: var(--seal);
  text-decoration: none;
  border-bottom: 1px solid var(--seal);
}

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

/* ---------- 平板及以上 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-masthead {
    padding: 120px 0 56px;
  }

  .page-faq .faq-lead {
    font-size: 17px;
  }

  .page-faq .faq-start {
    padding: 64px 0 32px;
  }

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

  .page-faq .faq-panel {
    padding: 56px 0 80px;
  }

  .page-faq .faq-terms {
    padding: 8px 0 80px;
  }

  .page-faq .faq-more {
    padding: 0 0 96px;
  }
}

/* ---------- 桌面双栏 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-panel .shell--split {
    display: grid;
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-axis {
    position: sticky;
    top: 96px;
    margin: 0;
  }

  .page-faq .faq-axis .axis-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-axis .axis-link {
    padding: 11px 14px;
    border-bottom: 0;
    border-left: 2px solid var(--grid);
    white-space: normal;
  }

  .page-faq .faq-axis .axis-link:hover,
  .page-faq .faq-axis .axis-link[data-current="true"] {
    border-left-color: var(--seal);
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 64px;
  }
}

/* ---------- 超窄屏：术语表转纵向卡片 ---------- */
@media (max-width: 639px) {
  .page-faq .faq-terms-table thead {
    display: none;
  }

  .page-faq .faq-terms-table,
  .page-faq .faq-terms-table tbody,
  .page-faq .faq-terms-table tr,
  .page-faq .faq-terms-table td {
    display: block;
    width: 100%;
  }

  .page-faq .faq-terms-table tr {
    padding: 14px 0;
    border-bottom: 1px solid var(--grid);
    background: transparent;
  }

  .page-faq .faq-terms-table tbody tr:nth-child(odd) {
    background: transparent;
  }

  .page-faq .faq-terms-table td {
    border: 0;
    padding: 2px 0;
  }

  .page-faq .faq-terms-table td:first-child {
    font-size: 15px;
    color: var(--seal);
  }

  .page-faq .faq-terms-scroll {
    overflow-x: visible;
  }
}

/* ---------- 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-axis .axis-link {
    transition: none;
  }
}