.master-container {
  background: var(--color-canvas);
  border-left: var(--border-thin) solid var(--color-container-border);
  border-right: var(--border-thin) solid var(--color-container-border);
  display: flex;
  flex-direction: column;
  margin: auto;
  max-width: 100%;
  min-height: var(--container-min-height);
  width: var(--container-width);
}

main {
  background: var(--color-canvas);
  flex: 1 0 auto;
  font-size: var(--font-size-main);
  overflow-wrap: break-word;
  padding: var(--space-main-y) var(--space-main-x);
}

.split-layout {
  align-items: start;
  min-width: 0;
}

.split-layout--messages {
  display: grid;
  gap: var(--layout-stack-gap);
}

.split-layout__pane {
  align-content: start;
  display: grid;
  gap: var(--layout-stack-gap);
  min-width: 0;
  padding: var(--space-6);
}

.split-layout--messages > .split-layout__pane {
  padding: 0;
}

.page-frame {
  align-content: start;
  display: grid;
  gap: var(--layout-stack-gap);
  margin: 0 auto var(--space-11);
  max-width: 100%;
  overflow-wrap: break-word;
  padding: 0 var(--space-5);
}

.page-frame--narrow {
  width: var(--content-measure);
}

.page-frame--wide {
  width: min(100%, calc(var(--container-width) - var(--space-10)));
}

.page-frame--full {
  width: 100%;
}

.page-heading {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  justify-content: space-between;
  min-width: 0;
}

.page-heading__title {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
}

.page-heading__actions {
  flex: 0 0 auto;
}