dialog.wx-help-dialog-native {
  box-sizing: border-box;
  width: 100vw;
  height: 100dvh;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 20px;
  border: 0;
  background: transparent;
  color: var(--fg-text);
}

dialog.wx-help-dialog-native[open] {
  display: grid;
  place-items: center;
}

dialog.wx-help-dialog-native::backdrop {
  background: rgba(0, 0, 0, 0.6);
}

.wx-help-dialog-panel {
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  width: min(500px, 100%);
  max-height: calc(100dvh - 40px);
  overflow: hidden;
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  background: var(--bg-card);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.wx-help-dialog-header {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-card);
}

.wx-help-dialog-title {
  margin: 0;
  color: var(--fg-text);
  font-size: 16px;
  font-weight: 600;
}

.wx-help-dialog-close {
  padding: 0;
  border: 0;
  background: none;
  color: var(--fg-muted);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

.wx-help-dialog-close:hover,
.wx-help-dialog-close:focus-visible {
  color: var(--fg-text);
}

.wx-help-dialog-body {
  min-height: 0;
  padding: 16px;
  overflow-y: auto;
  color: var(--fg-text);
  font-size: 14px;
  line-height: 1.5;
  overscroll-behavior: contain;
}

.wx-help-dialog-body h4 {
  margin: 16px 0 8px;
  color: var(--fg-text);
  font-size: 14px;
  font-weight: 600;
}

.wx-help-dialog-body h4:first-child { margin-top: 0; }
.wx-help-dialog-body ul { margin: 0; padding-left: 22px; list-style: disc outside; }
.wx-help-dialog-body li { display: list-item; margin-bottom: 6px; color: var(--fg-text); line-height: 1.5; }
.wx-help-dialog-body p { margin: 0 0 10px; color: var(--fg-text); line-height: 1.5; }
.wx-help-dialog-body p:last-child { margin-bottom: 0; }

@media (max-width: 430px) {
  dialog.wx-help-dialog-native { padding: 12px; }
  .wx-help-dialog-panel { max-height: calc(100dvh - 24px); }
}