/* legal-hub.css — about/legal.html 综合政策页外壳
 * 仅承载「页面级目录 + 文档编排」布局；文档内部样式由 legal.css（.legal-doc）提供。
 * 复用站点设计 token（styles.css :root），不引入新色系，保持视觉一致。
 * 记忆点：左侧「法典式」编号目录（01–07），随阅读高亮当前章节；文档以纸感卡片、声明以强调边卡片形成层级。
 */

.legal-hub {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: var(--space-7, 48px);
  align-items: start;
}

/* ---------- 页面级目录 ---------- */
.legal-hub__toc {
  position: sticky;
  top: calc(var(--nav-h, 72px) + var(--space-4, 16px));
  align-self: start;
}
.legal-hub__toc-title {
  margin: 0 0 var(--space-3, 12px);
  padding-left: 14px;
  font-size: var(--fs-xs, 12px);
  letter-spacing: var(--ls-caps, 0.08em);
  text-transform: uppercase;
  color: var(--color-text-tertiary, #6E695F);
  font-weight: var(--fw-semibold, 600);
}
.legal-hub__toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: legal-toc;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.legal-hub__toc-list a {
  counter-increment: legal-toc;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 14px;
  border-radius: var(--radius-md, 10px);
  border-left: 3px solid transparent;
  color: var(--color-text-secondary, #5B554C);
  font-size: var(--fs-sm, 14px);
  line-height: 1.35;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.legal-hub__toc-list a::before {
  content: counter(legal-toc, decimal-leading-zero);
  font-family: var(--font-mono, ui-monospace, monospace);
  font-size: 11px;
  color: var(--color-primary-300, #6FB0BD);
  min-width: 18px;
}
.legal-hub__toc-list a:hover {
  background: var(--color-surface-2, #F4F1EC);
  color: var(--color-text, #1F1B16);
}
.legal-hub__toc-list a.is-current {
  background: var(--color-primary-50, #EAF4F6);
  color: var(--color-primary-700, #0A4754);
  border-left-color: var(--color-primary-500, #1C7080);
  font-weight: var(--fw-semibold, 600);
}
.legal-hub__toc-list a.is-current::before {
  color: var(--color-primary-500, #1C7080);
}
.legal-hub__toc-list a:focus-visible {
  outline: 3px solid var(--color-focus-ring, rgba(14, 92, 110, 0.22));
  outline-offset: 2px;
}

/* ---------- 内容列 ---------- */
.legal-hub__content { min-width: 0; }
.legal-hub__content > section[id] {
  scroll-margin-top: calc(var(--nav-h, 72px) + var(--space-5, 32px));
}

/* 文档卡片之间的分隔 */
.legal-sep {
  border: none;
  height: 1px;
  background: var(--color-border, #E3DDD3);
  margin: var(--space-8, 64px) 0;
}

/* 简短声明（HIPAA / 退款 / 可达性）以带强调边的卡片呈现，与完整文档形成层级 */
.policy-note {
  scroll-margin-top: calc(var(--nav-h, 72px) + var(--space-5, 32px));
  padding: var(--space-6, 32px);
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #E3DDD3);
  border-left: 4px solid var(--color-primary-500, #1C7080);
  border-radius: var(--radius-lg, 16px);
}
.policy-note > :first-child { margin-top: 0; }
.policy-note h2 {
  margin: 0 0 var(--space-3, 12px);
  font-size: var(--fs-xl, 24px);
  font-family: var(--font-serif-cn, "Noto Serif SC", serif);
}
.policy-note p {
  margin: 0;
  color: var(--color-text-secondary, #5B554C);
  max-width: 72ch;
}

/* 综合页内：文档网格转单列，去除原文档自带内部目录（已由本页目录承接） */
.legal-hub .doc-grid {
  display: block;
  max-width: none;
  margin-inline: 0;
  padding-inline: 0;
}

/* ============ 每份文档内的「按主题」条款索引 ============ */
.doc-toc {
  margin: var(--space-5, 32px) 0 var(--space-7, 48px);
  padding: var(--space-5, 32px);
  background: var(--color-raised, #F8FBF1);
  border: 1px solid var(--color-border-card, #D5DFCB);
  border-radius: var(--radius-lg, 16px);
}
.doc-toc__summary {
  cursor: pointer;
  font-family: var(--font-serif-cn, "Noto Serif SC", serif);
  font-weight: var(--fw-semibold, 600);
  font-size: var(--fs-lg, 19px);
  color: var(--color-primary-700, #0A4754);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
.doc-toc__summary::-webkit-details-marker { display: none; }
.doc-toc__summary::before {
  content: "";
  width: 8px; height: 8px; border-radius: 2px;
  background: var(--color-accent, #A45C33);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}
.doc-toc[open] > .doc-toc__summary::before { transform: rotate(45deg) translate(2px, 2px); }
.doc-toc__summary:focus-visible { outline: 3px solid var(--color-focus-ring, rgba(14, 92, 110, 0.22)); outline-offset: 3px; border-radius: 6px; }
.doc-toc__grid {
  margin-top: var(--space-5, 32px);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: var(--space-5, 32px) var(--space-6, 40px);
}
.doc-toc__gt {
  margin: 0 0 var(--space-2, 8px);
  font-size: var(--fs-sm, 14px);
  font-weight: var(--fw-semibold, 600);
  color: var(--color-text, #1F1B16);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border, #E3DDD3);
}
.doc-toc__group ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.doc-toc__group li a {
  display: block;
  padding: 4px 8px;
  border-radius: 8px;
  font-size: var(--fs-sm, 14px);
  line-height: 1.4;
  color: var(--color-text-secondary, #5B554C);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}
.doc-toc__group li a:hover { background: var(--color-surface-2, #F4F1EC); color: var(--color-text, #1F1B16); }
.doc-toc__group li.is-sub a { padding-left: 22px; color: var(--color-text-tertiary, #6E695F); font-size: var(--fs-xs, 13px); }
.doc-toc__group li a:focus-visible { outline: 3px solid var(--color-focus-ring, rgba(14, 92, 110, 0.22)); outline-offset: 2px; }

/* ============ 主题分组（clause-group） ============ */
.clause-group {
  scroll-margin-top: calc(var(--nav-h, 72px) + var(--space-5, 32px));
  padding-top: var(--space-6, 32px);
}
.clause-group + .clause-group { border-top: 1px solid var(--color-border, #E3DDD3); margin-top: var(--space-6, 32px); }
.clause-group__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 var(--space-5, 32px);
  font-family: var(--font-serif-cn, "Noto Serif SC", serif);
  font-size: clamp(1.25rem, 1.05rem + 0.8vw, 1.6rem);
  font-weight: var(--fw-semibold, 600);
  line-height: 1.25;
  color: var(--color-primary-800, #07343D);
  padding-bottom: var(--space-3, 12px);
  border-bottom: 2px solid var(--color-primary-500, #1C7080);
}
.clause-group__no {
  flex: none;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent, #A45C33);
  letter-spacing: 0.02em;
}
.clause-group--related { margin-top: var(--space-7, 48px); }

/* ============ 条款标题层级（clause > h4；子条款 h5） ============ */
.legal-doc .clause {
  scroll-margin-top: calc(var(--nav-h, 72px) + var(--space-5, 32px));
  margin-top: var(--space-6, 32px);
}
.legal-doc .clause + .clause { margin-top: var(--space-6, 32px); }
.legal-doc .clause--sub { margin-left: clamp(16px, 3%, 40px); border-left: 2px solid var(--color-sage, #AEC3B0); padding-left: var(--space-4, 16px); }
.legal-doc .clause > h4 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: clamp(1.05rem, 0.95rem + 0.5vw, 1.25rem);
  font-weight: var(--fw-semibold, 600);
  line-height: 1.4;
  color: var(--color-ink, #01161E);
  margin: 0 0 var(--space-3, 12px);
  padding-bottom: var(--space-2, 8px);
  border-bottom: 1px solid var(--color-border, #E3DDD3);
}
.legal-doc .clause--sub > h4 {
  font-size: 1rem;
  color: var(--color-primary-700, #0A4754);
  border-bottom: none;
  padding-bottom: 0;
}
.legal-doc .clause-no {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-variant-numeric: tabular-nums;
  font-weight: var(--fw-medium, 500);
  color: var(--color-secondary, #496069);
  flex: none;
}
.legal-doc .clause > h5 {
  font-size: 1rem;
  font-weight: var(--fw-semibold, 600);
  line-height: 1.4;
  color: var(--color-ink, #01161E);
  margin: var(--space-5, 32px) 0 var(--space-3, 12px);
}

/* ---------- 响应式：窄屏目录转顶部横向滚动标签条 ---------- */
@media (max-width: 1024px) {
  .legal-hub {
    grid-template-columns: 1fr;
    gap: var(--space-5, 32px);
  }
  .legal-hub__toc {
    position: static;
    top: auto;
    min-width: 0;
    max-width: 100%;
  }
  .legal-hub__toc-title { display: none; }
  .legal-hub__toc-list {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }
  .legal-hub__toc-list a {
    white-space: nowrap;
    border-left: none;
    border-bottom: 3px solid transparent;
    padding: 8px 12px;
  }
  .legal-hub__toc-list a::before { content: none; }
  .legal-hub__toc-list a.is-current {
    border-left: none;
    border-bottom-color: var(--color-primary-500, #1C7080);
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .legal-hub__toc-list a { transition: none; }
}