/* Mobile shell spacing and compact theme choice; no learning/runtime changes. */
@media (max-width: 767px) {
  .system-shell:has(.harness-embed-root) > button[aria-label="打开菜单"] {
    top: calc(4px + var(--qm-safe-top, 0px));
    width: 44px !important;
    height: 44px !important;
  }
  .system-shell:has(.harness-embed-root):has(> button[aria-label="打开菜单"]) > .flex-1 {
    padding-top: calc(52px + var(--qm-safe-top, 0px));
  }
  .system-shell [role="dialog"][aria-label="主导航"] .theme-switcher {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 14px;
  }
  .system-shell [role="dialog"][aria-label="主导航"] .theme-switcher__heading {
    margin: 0;
  }
  .system-shell [role="dialog"][aria-label="主导航"] .theme-switcher__heading p {
    margin: 0;
    font-size: 13px;
    white-space: nowrap;
  }
  .system-shell [role="dialog"][aria-label="主导航"] .theme-switcher__heading span,
  .system-shell [role="dialog"][aria-label="主导航"] .theme-switcher__heading strong,
  .system-shell [role="dialog"][aria-label="主导航"] .theme-option__preview,
  .system-shell [role="dialog"][aria-label="主导航"] .theme-option__copy small,
  .system-shell [role="dialog"][aria-label="主导航"] .theme-option__check {
    display: none;
  }
  .system-shell [role="dialog"][aria-label="主导航"] .theme-switcher__options {
    display: flex;
    gap: 8px;
    margin: 0;
    min-width: 0;
  }
  .system-shell [role="dialog"][aria-label="主导航"] .theme-option {
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: center;
    min-width: 0;
    min-height: 44px;
    padding: 8px 6px;
    border-radius: 12px;
  }
  .system-shell [role="dialog"][aria-label="主导航"] .theme-option__name {
    gap: 4px;
    font-size: 13px;
    white-space: nowrap;
  }
  .system-shell [role="dialog"][aria-label="主导航"] .theme-option__name svg {
    width: 16px;
    height: 16px;
  }
}