/* 在线教程页：与首页共用 header/footer，仅保留正文区样式 */
.ks-help-page {
  --hc-primary: #2563eb;
  --hc-primary-light: #eff6ff;
  --hc-green: #10b981;
  --hc-orange: #f59e0b;
  --hc-purple: #8b5cf6;
  --hc-gray-50: #f9fafb;
  --hc-gray-100: #f3f4f6;
  --hc-gray-200: #e5e7eb;
  --hc-gray-600: #4b5563;
  --hc-gray-700: #374151;
  --hc-gray-800: #1f2937;
  --hc-gray-900: #111827;
  --hc-radius: 12px;
  --hc-radius-sm: 8px;
  --hc-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  background: var(--hc-gray-50);
  padding: 24px 0 40px;
  min-height: calc(100vh - 280px);
}
.ks-help-page .layout {
  display: flex;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  gap: 28px;
}
.ks-help-page .sidebar {
  width: 260px;
  flex-shrink: 0;
}
.ks-help-page .sidebar-nav {
  position: sticky;
  top: 16px;
}
.ks-help-page .sidebar-group {
  margin-bottom: 8px;
}
.ks-help-page .sidebar-group-title {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--hc-gray-800);
  cursor: default;
  border-radius: var(--hc-radius-sm);
}
.ks-help-page .sidebar-group-title svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.ks-help-page .sidebar-group-title.blue svg { color: var(--hc-primary); }
.ks-help-page .sidebar-group-title.green svg { color: var(--hc-green); }
.ks-help-page .sidebar-group-title.orange svg { color: var(--hc-orange); }
.ks-help-page .sidebar-group-title.purple svg { color: var(--hc-purple); }
.ks-help-page .sidebar-items {
  padding-left: 28px;
}
.ks-help-page .sidebar-item {
  display: block;
  padding: 8px 16px;
  margin: 2px 0;
  font-size: 0.85rem;
  color: var(--hc-gray-600);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}
.ks-help-page .sidebar-item:hover {
  background: var(--hc-gray-100);
  color: var(--hc-gray-900);
  text-decoration: none;
}
.ks-help-page .sidebar-item.active {
  background: var(--hc-primary-light);
  color: var(--hc-primary);
  font-weight: 500;
}
.ks-help-page .content {
  flex: 1;
  min-width: 0;
}
.ks-help-page .content-card {
  background: #fff;
  border-radius: var(--hc-radius);
  padding: 36px 40px;
  box-shadow: var(--hc-shadow);
  min-height: 500px;
}
.ks-help-page .content-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--hc-gray-900);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--hc-gray-200);
  margin-bottom: 24px;
}
.ks-help-page .content-body {
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--hc-gray-700);
}
.ks-help-page .content-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--hc-gray-900);
  margin: 24px 0 12px;
}
.ks-help-page .content-body p { margin-bottom: 12px; }
.ks-help-page .content-body ul,
.ks-help-page .content-body ol {
  padding-left: 20px;
  margin-bottom: 12px;
}
.ks-help-page .content-body li { margin-bottom: 6px; }
.ks-help-page .content-body .step {
  display: flex;
  gap: 12px;
  padding: 14px 16px;
  background: var(--hc-gray-50);
  border-radius: var(--hc-radius-sm);
  margin-bottom: 10px;
  align-items: flex-start;
}
.ks-help-page .content-body .step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--hc-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}
.ks-help-page .content-body .step-text { flex: 1; }
.ks-help-page .content-body .tip {
  padding: 14px 16px;
  background: var(--hc-primary-light);
  border-left: 3px solid var(--hc-primary);
  border-radius: 0 var(--hc-radius-sm) var(--hc-radius-sm) 0;
  margin: 16px 0;
  font-size: 0.88rem;
}
.ks-help-page .content-body .warn {
  padding: 14px 16px;
  background: #fffbeb;
  border-left: 3px solid var(--hc-orange);
  border-radius: 0 var(--hc-radius-sm) var(--hc-radius-sm) 0;
  margin: 16px 0;
  font-size: 0.88rem;
}
@media (max-width: 768px) {
  .ks-help-page .layout {
    flex-direction: column;
    gap: 16px;
  }
  .ks-help-page .sidebar { width: 100%; }
  .ks-help-page .sidebar-nav { position: static; }
  .ks-help-page .content-card { padding: 24px 20px; }
}