.editor-help-dialog { width:min(760px,calc(100vw - 32px)); max-width:none; max-height:calc(100vh - 32px); max-height:calc(100dvh - 32px); padding:0; overflow:hidden; border:1px solid var(--line); border-radius:16px; background:#fff; color:var(--ink); box-shadow:0 20px 90px #13254338; }
.editor-help-dialog::backdrop { background:#18263b70; }
.editor-help-shell { display:flex; flex-direction:column; max-height:calc(100vh - 34px); max-height:calc(100dvh - 34px); }
.editor-help-header { display:flex; align-items:flex-start; justify-content:space-between; flex-shrink:0; gap:16px; padding:20px; border-bottom:1px solid var(--line); }
.editor-help-header h2 { margin:0 0 6px; font-size:18px; }
.editor-help-header p { margin:0; color:#657187; font-size:12px; line-height:1.7; }
.editor-help-close { flex-shrink:0; min-width:44px; min-height:44px; border-radius:8px; color:#657187; font-size:25px; line-height:1; }
.editor-help-body { min-height:0; overflow:auto; overscroll-behavior:contain; padding:0 20px 20px; overflow-wrap:anywhere; }
.editor-help-body:focus-visible { outline-offset:-3px; }
.editor-help-section { padding:18px 0; border-bottom:1px solid var(--line); }
.editor-help-section h3 { margin:0 0 12px; font-size:14px; }
.editor-help-menu-notes,.editor-help-shortcuts { margin:0; font-size:12px; line-height:1.7; }
.editor-help-menu-notes > div,.editor-help-shortcuts > div { display:grid; gap:8px 20px; padding:7px 0; }
.editor-help-menu-notes > div { grid-template-columns:96px minmax(0,1fr); }
.editor-help-shortcuts > div { grid-template-columns:minmax(145px,.8fr) minmax(0,1.3fr); }
.editor-help-menu-notes dt { font-weight:600; }
.editor-help-menu-notes dd,.editor-help-shortcuts dd { margin:0; color:#58677e; }
.editor-help-shortcuts kbd { display:inline-block; padding:3px 7px; border:1px solid #dce3ef; border-radius:5px; background:#f6f8fc; color:#34445b; font-family:inherit; font-size:11px; font-weight:600; line-height:1.6; white-space:normal; }
.editor-help-context { margin:16px 0 0; color:#657187; font-size:12px; line-height:1.8; }
@media (max-width:520px) {
  .editor-help-dialog { width:calc(100vw - 16px); max-height:calc(100dvh - 16px); border-radius:12px; }
  .editor-help-shell { max-height:calc(100dvh - 18px); }
  .editor-help-header { padding:14px; gap:8px; }
  .editor-help-body { padding:0 14px 16px; }
  .editor-help-menu-notes > div,.editor-help-shortcuts > div { grid-template-columns:minmax(0,1fr); gap:4px; padding:9px 0; }
}