/* ==================== 政策页版式 ====================
 * 电脑端（≥1200px）：左侧导航 | 正文（≤720px）| 右侧本页目录
 * 中屏（992–1199px）：左侧导航 | 正文（目录在正文上方折叠）
 * 窄屏（<992px）：顶部横向切换条 + 正文（目录折叠）
 */
.policy-layout {
  --policy-fg: var(--color-fg);
  --policy-text: #3a3f45;
  --policy-muted: var(--color-fg-muted);
  --policy-line: rgba(0, 0, 0, .08);
  --policy-line-strong: rgba(0, 0, 0, .12);
  --policy-subtle: var(--color-bg-subtle);
  --policy-accent: var(--brand-700);
  --policy-accent-soft: var(--brand-50);
  --policy-sticky-top: calc(var(--gta-header-h, 60px) + 32px);
  width: 100%;
  background: var(--color-surface);
  color: var(--policy-text);
}

.policy-layout-grid {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  column-gap: 56px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 56px 24px 96px;
  box-sizing: border-box;
}

.policy-layout-main {
  min-width: 0;
  max-width: 720px;
}

.policy-layout-toc {
  display: none;
}

@media (min-width: 1200px) {
  .policy-layout-grid {
    grid-template-columns: 200px minmax(0, 1fr) 200px;
    column-gap: 48px;
  }

  .policy-layout-main {
    justify-self: center;
    width: 100%;
  }

  .policy-layout-toc {
    display: block;
  }

  .policy-toc-mobile {
    display: none;
  }
}

/* ---------- 左侧导航 ---------- */
.policy-sidebar {
  position: sticky;
  top: var(--policy-sticky-top);
}

.policy-sidebar-title,
.policy-toc-title {
  margin: 0 0 12px;
  padding: 0 12px;
  font-size: 12px;
  font-weight: var(--fw-semibold, 600);
  line-height: 1.5;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--policy-muted);
}

.policy-sidebar-list,
.policy-toc-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.policy-sidebar-link {
  display: block;
  margin: 2px 0;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--policy-text);
  text-decoration: none;
  transition: background-color .15s ease, color .15s ease;
}

.policy-sidebar-link:hover {
  background: var(--policy-subtle);
  color: var(--policy-fg);
}

.policy-sidebar-link.is-active {
  background: var(--policy-accent-soft);
  color: var(--policy-accent);
  font-weight: var(--fw-semibold, 600);
}

/* ---------- 右侧本页目录 ---------- */
.policy-toc {
  position: sticky;
  top: var(--policy-sticky-top);
  max-height: calc(100vh - var(--policy-sticky-top) - 32px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.policy-toc .policy-toc-title {
  padding-left: 14px;
}

.policy-toc .policy-toc-list {
  border-left: 1px solid var(--policy-line);
}

.policy-toc-link {
  display: block;
  margin-left: -1px;
  padding: 6px 0 6px 13px;
  border-left: 2px solid transparent;
  font-size: 13px;
  line-height: 1.5;
  color: var(--policy-muted);
  text-decoration: none;
  transition: color .15s ease, border-color .15s ease;
}

.policy-toc-link:hover {
  color: var(--policy-fg);
}

.policy-toc-link.is-active {
  border-left-color: var(--color-brand);
  color: var(--policy-fg);
  font-weight: var(--fw-medium, 500);
}

/* ---------- 正文上方折叠目录（窄屏） ---------- */
.policy-toc-mobile {
  margin: 0 0 32px;
  border: 1px solid var(--policy-line);
  border-radius: 12px;
  background: var(--policy-subtle);
}

.policy-toc-mobile-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 0 16px;
  font-size: 15px;
  font-weight: var(--fw-semibold, 600);
  color: var(--policy-fg);
  cursor: pointer;
  list-style: none;
  border-radius: 12px;
}

.policy-toc-mobile-summary::-webkit-details-marker {
  display: none;
}

.policy-toc-mobile-chev {
  font-size: 16px;
  color: var(--policy-muted);
  transition: transform .2s ease;
}

.policy-toc-mobile[open] .policy-toc-mobile-chev {
  transform: rotate(180deg);
}

.policy-toc-mobile .policy-toc-list {
  padding: 4px 16px 12px;
  border-top: 1px solid var(--policy-line);
}

.policy-toc-mobile .policy-toc-link {
  margin: 0;
  padding: 10px 0;
  border-left: 0;
  font-size: 15px;
  color: var(--policy-text);
}

.policy-toc-mobile li + li .policy-toc-link {
  border-top: 1px solid var(--policy-line);
}

/* ---------- 手机端切换条 ---------- */
.policy-switcher {
  display: none;
}

/* ---------- 页面标题 ---------- */
.policy-header {
  margin: 0 0 40px;
  padding: 0 0 32px;
  border-bottom: 1px solid var(--policy-line);
}

.policy-header .policy-h1,
.policy-header h1 {
  margin: 0;
  font-size: 40px;
  font-weight: var(--fw-bold, 700);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--policy-fg);
}

.policy-updated {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--policy-muted);
}

/* ---------- 正文排版 ---------- */
.policy-prose {
  font-size: 16px;
  line-height: 1.8;
  color: var(--policy-text);
  overflow-wrap: break-word;
  word-break: normal;
}

.policy-prose > :first-child {
  margin-top: 0;
}

.policy-prose p {
  margin: 0 0 16px;
}

.policy-prose h2 {
  margin: 56px 0 16px;
  font-size: 24px;
  font-weight: var(--fw-semibold, 600);
  line-height: 1.4;
  letter-spacing: -.005em;
  color: var(--policy-fg);
  scroll-margin-top: 24px;
}

.policy-prose h3 {
  margin: 36px 0 12px;
  font-size: 18px;
  font-weight: var(--fw-semibold, 600);
  line-height: 1.5;
  color: var(--policy-fg);
  scroll-margin-top: 24px;
}

.policy-prose h4,
.policy-prose h5,
.policy-prose h6 {
  margin: 28px 0 8px;
  font-size: 16px;
  font-weight: var(--fw-semibold, 600);
  line-height: 1.6;
  color: var(--policy-fg);
}

.policy-prose h2 + h3 {
  margin-top: 20px;
}

.policy-prose strong {
  font-weight: var(--fw-semibold, 600);
  color: var(--policy-fg);
}

.policy-prose ul,
.policy-prose ol {
  margin: 0 0 20px;
  padding-left: 1.5em;
}

.policy-prose li {
  margin: 8px 0;
  padding-left: 4px;
}

.policy-prose li > p {
  margin: 0;
}

.policy-prose li > p + p {
  margin-top: 8px;
}

.policy-prose li > ul,
.policy-prose li > ol {
  margin: 8px 0 0;
}

.policy-prose ul > li::marker {
  color: var(--color-brand);
}

.policy-prose ol > li::marker {
  color: var(--policy-muted);
  font-variant-numeric: tabular-nums;
}

.policy-link {
  color: var(--policy-accent);
  text-decoration: underline;
  text-decoration-color: rgba(28, 138, 77, .35);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-color .15s ease;
}

.policy-link:hover {
  text-decoration-color: currentColor;
}

.policy-prose hr {
  height: 0;
  margin: 48px 0;
  border: 0;
  border-top: 1px solid var(--policy-line);
}

.policy-callout {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--color-brand);
  border-radius: 0 12px 12px 0;
  background: var(--policy-accent-soft);
  color: var(--policy-fg);
}

.policy-callout > :last-child {
  margin-bottom: 0;
}

.policy-prose code {
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--policy-subtle);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .9em;
}

.policy-prose pre {
  margin: 0 0 20px;
  padding: 16px;
  overflow-x: auto;
  border-radius: 12px;
  background: var(--policy-subtle);
}

.policy-prose pre code {
  padding: 0;
  background: none;
}

/* 表格：细线 + 斑马纹，窄屏在容器内横向滚动 */
.policy-table-wrap {
  margin: 24px 0 28px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--policy-line-strong);
  border-radius: 12px;
}

.policy-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.65;
}

.policy-table th,
.policy-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
}

.policy-table thead th {
  background: var(--policy-subtle);
  border-bottom: 1px solid var(--policy-line-strong);
  font-weight: var(--fw-semibold, 600);
  color: var(--policy-fg);
  white-space: nowrap;
}

.policy-table tbody tr + tr > * {
  border-top: 1px solid var(--policy-line);
}

.policy-table tbody tr:nth-child(even) {
  background: #fafbfc;
}

.policy-table tbody th {
  font-weight: var(--fw-semibold, 600);
  color: var(--policy-fg);
}

.policy-table p {
  margin: 0;
}

.policy-table p + p {
  margin-top: 6px;
}

.policy-figure {
  margin: 24px 0 28px;
}

.policy-figure img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.policy-figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--policy-muted);
  text-align: center;
}

/* ---------- 无正文占位 ---------- */
.policy-empty {
  padding: 64px 24px;
  border-radius: 16px;
  background: var(--policy-subtle);
  text-align: center;
}

.policy-empty-title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: var(--fw-semibold, 600);
  color: var(--policy-fg);
}

.policy-empty-desc {
  margin: 0;
  font-size: 14px;
  color: var(--policy-muted);
}

/* ---------- 键盘焦点 ---------- */
.policy-layout a:focus-visible,
.policy-toc-mobile-summary:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ==================== 窄屏 ==================== */
@media (max-width: 991px) {
  .policy-layout-grid {
    display: block;
    max-width: 720px;
    padding: 28px 16px 64px;
  }

  .policy-layout-side {
    display: none;
  }

  .policy-switcher {
    display: block;
    border-bottom: 1px solid var(--policy-line);
    background: var(--color-surface);
  }

  .policy-switcher-track {
    display: flex;
    gap: 8px;
    max-width: 720px;
    margin: 0 auto;
    padding: 12px 16px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    box-sizing: border-box;
  }

  .policy-switcher-track::-webkit-scrollbar {
    display: none;
  }

  .policy-switcher-chip {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 0 14px;
    border: 1px solid var(--policy-line-strong);
    border-radius: 999px;
    font-size: 14px;
    line-height: 1;
    color: var(--policy-text);
    text-decoration: none;
    white-space: nowrap;
    background: var(--color-surface);
  }

  .policy-switcher-chip.is-active {
    border-color: var(--policy-fg);
    background: var(--policy-fg);
    color: #fff;
    font-weight: var(--fw-medium, 500);
  }

  .policy-header {
    margin-bottom: 28px;
    padding-bottom: 24px;
  }

  .policy-header .policy-h1,
  .policy-header h1 {
    font-size: 30px;
    line-height: 1.25;
  }

  .policy-prose h2 {
    margin-top: 44px;
    font-size: 21px;
  }

  .policy-prose h3 {
    margin-top: 28px;
    font-size: 17px;
  }
}

@media (max-width: 480px) {
  .policy-header .policy-h1,
  .policy-header h1 {
    font-size: 26px;
  }

  .policy-prose {
    font-size: 16px;
    line-height: 1.75;
  }

  .policy-table {
    font-size: 14px;
  }
}

/* 多列表格（有表头、≥3 列）窄屏改为卡片：每行一块，单元格前显示列名（data-label） */
@media (max-width: 640px) {
  .policy-table.policy-table--stack {
    min-width: 0;
  }
  .policy-table--stack thead {
    display: none;
  }
  .policy-table--stack tbody tr {
    display: block;
    padding: 10px 14px;
  }
  .policy-table--stack tbody tr + tr > * {
    border-top: 0;
  }
  .policy-table--stack tbody tr + tr {
    border-top: 1px solid var(--policy-line);
  }
  .policy-table--stack tbody :is(td, th) {
    display: block;
    padding: 3px 0;
  }
  .policy-table--stack tbody :is(td, th)[data-label]::before {
    content: attr(data-label);
    display: block;
    font-size: 12px;
    font-weight: 400;
    color: var(--policy-muted);
  }
}