body.markdown-page {
  /* Colors */
  color-scheme: light;
  --markdown-page: #f3f6f9;
  --markdown-panel: #ffffff;
  --markdown-control: #f7f9fb;
  --markdown-editor: #ffffff;
  --markdown-text: #172033;
  --markdown-muted: #5d6b7d;
  --markdown-border: #cbd5e1;
  --markdown-border-strong: #aebaca;
  --markdown-primary: #086bd8;
  --markdown-primary-hover: #075bb6;
  --markdown-focus: #1473e6;
  --markdown-success: #087a45;
  --markdown-warning: #9a5a00;
  --markdown-error: #b42318;
  --markdown-info-bg: #e8f4ff;
  --markdown-message-bg: #f5f7fa;
  --markdown-info-text: #07579e;
  --markdown-info-border: #9dd5ff;
  --markdown-on-primary: #ffffff;
  /* Layout */
  --markdown-content-width: 1500px;
  --markdown-page-gutter: 32px;
  --markdown-page-gutter-mobile: 20px;
  --markdown-panel-gap: 14px;
  --markdown-panel-padding: 14px;
  --markdown-radius-large: 10px;
  --markdown-radius-small: 6px;
  --markdown-control-height: 36px;
  --markdown-editor-heading-height: 50px;
  box-sizing: border-box;
  margin: 0;
  color: var(--markdown-text);
  background: var(--markdown-page);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.6;
}

.markdown-page * {
  box-sizing: border-box;
}

/* Page structure */
.markdown-main {
  width: min(var(--markdown-content-width), calc(100% - var(--markdown-page-gutter)));
  margin: 0 auto;
  padding-block: 26px 48px;
  padding-inline: 0;
}

.markdown-page-header {
  margin-block-end: 16px;
}

.markdown-page-header h1 {
  margin-block: 8px 2px;
  margin-inline: 0;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.25;
}

.markdown-page-header p,
.markdown-panel-heading p {
  margin-block: 4px 0;
  margin-inline: 0;
  color: var(--markdown-muted);
}

.markdown-page .breadcrumb {
  display: flex;
  gap: 7px;
  align-items: center;
  font-size: 13px;
}

.markdown-page .breadcrumb a {
  color: var(--markdown-primary);
}

.markdown-page .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Panels */
.markdown-notice,
.markdown-panel {
  border: 1px solid var(--markdown-border);
  border-radius: var(--markdown-radius-large);
  background: var(--markdown-panel);
}

.markdown-notice {
  margin-block-end: var(--markdown-panel-gap);
  padding: 12px var(--markdown-panel-padding);
  color: var(--markdown-info-text);
  background: var(--markdown-info-bg);
}

.markdown-panel {
  margin-block-end: var(--markdown-panel-gap);
  overflow: hidden;
}

.markdown-panel-heading {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: var(--markdown-panel-padding);
  border-block-end: 1px solid var(--markdown-border);
}

.markdown-panel-heading h2,
.markdown-editor-heading h3,
.markdown-toc h3,
.markdown-about h2,
.markdown-about h3 {
  margin: 0;
}

.markdown-panel-heading h2 {
  font-size: 18px;
}

.markdown-actions,
.markdown-toolbar,
.markdown-preview-search {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

/* Controls */
.markdown-control {
  min-height: var(--markdown-control-height);
  border: 1px solid var(--markdown-border-strong);
  border-radius: var(--markdown-radius-small);
  color: var(--markdown-text);
  background: var(--markdown-control);
  font: inherit;
}

.markdown-button,
.markdown-icon-button,
.markdown-step-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 12px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.markdown-button:hover:not(:disabled),
.markdown-icon-button:hover:not(:disabled),
.markdown-step-button:hover:not(:disabled) {
  border-color: var(--markdown-primary);
}

.markdown-button--primary {
  border-color: var(--markdown-primary);
  color: var(--markdown-on-primary);
  background: var(--markdown-primary);
}

.markdown-button--primary:hover:not(:disabled) {
  background: var(--markdown-primary-hover);
}

.markdown-page button:disabled {
  opacity: .48;
  cursor: not-allowed;
}

.markdown-page button:focus-visible,
.markdown-page select:focus-visible,
.markdown-page input:focus-visible,
.markdown-page textarea:focus-visible,
.markdown-page iframe:focus-visible {
  outline: 2px solid var(--markdown-focus);
  outline-offset: 2px;
}

.markdown-toolbar {
  min-height: 56px;
  padding: 9px var(--markdown-panel-padding);
  border-block-end: 1px solid var(--markdown-border);
  background: var(--markdown-control);
}

.markdown-toolbar--secondary {
  min-height: 50px;
  background: var(--markdown-panel);
}

.markdown-setting,
.markdown-check {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  min-height: var(--markdown-control-height);
  color: var(--markdown-muted);
}

.markdown-select {
  min-width: 140px;
  padding-block: 6px;
  padding-inline: 10px 34px;
}

.markdown-check {
  padding: 5px 8px;
  border: 1px solid var(--markdown-border);
  border-radius: var(--markdown-radius-small);
  background: var(--markdown-control);
}

.markdown-check input {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--markdown-primary);
}

.markdown-stepper {
  padding-block: 0;
  padding-inline: 10px 4px;
  border: 1px solid var(--markdown-border);
  border-radius: var(--markdown-radius-small);
  background: var(--markdown-control);
}

.markdown-step-button {
  min-width: 32px;
  padding: 4px;
}

.markdown-stepper output {
  min-width: 30px;
  color: var(--markdown-text);
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.markdown-stepper input[type="range"] {
  width: 72px;
}

.markdown-range-setting input {
  width: 110px;
}

.markdown-range-setting output {
  min-width: 48px;
  color: var(--markdown-text);
  font-variant-numeric: tabular-nums;
}

/* Editor and preview */
.markdown-workspace {
  --editor-height: 640px;
  --editor-ratio: 50%;
  display: grid;
  grid-template-columns: minmax(0, var(--editor-ratio)) minmax(0, 1fr);
  min-height: var(--editor-height);
  background: var(--markdown-editor);
}

.markdown-workspace[data-view-mode="editor"],
.markdown-workspace[data-view-mode="preview"] {
  grid-template-columns: minmax(0, 1fr);
}

.markdown-workspace[data-view-mode="editor"] .markdown-preview-pane,
.markdown-workspace[data-view-mode="preview"] .markdown-editor-pane {
  display: none;
}

.markdown-editor-pane,
.markdown-preview-pane {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.markdown-editor-pane {
  border-inline-end: 1px solid var(--markdown-border);
}

.markdown-workspace[data-view-mode="editor"] .markdown-editor-pane {
  border-inline-end: 0;
}

.markdown-editor-heading {
  display: flex;
  min-height: var(--markdown-editor-heading-height);
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-block-end: 1px solid var(--markdown-border);
  background: var(--markdown-control);
}

.markdown-editor-heading h3 {
  font-size: 14px;
}

.markdown-file-name {
  overflow: hidden;
  max-width: 50%;
  color: var(--markdown-muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.markdown-source-input,
.markdown-preview-frame {
  width: 100%;
  height: calc(var(--editor-height) - var(--markdown-editor-heading-height));
  min-height: 310px;
  border: 0;
  color: var(--markdown-text);
  background: var(--markdown-editor);
}

.markdown-source-input {
  padding: 18px;
  resize: none;
  font: 16px/1.7 "Cascadia Code", Consolas, monospace;
  tab-size: 4;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.markdown-workspace[data-wrap="false"] .markdown-source-input {
  white-space: pre;
  overflow-wrap: normal;
}

.markdown-search-input {
  width: min(220px, 35vw);
  padding: 6px 9px;
}

.markdown-icon-button {
  min-height: 32px;
  padding: 4px 9px;
  font-size: 12px;
}

.markdown-search-count {
  min-width: 32px;
  color: var(--markdown-muted);
  font-size: 12px;
}

.markdown-message {
  min-height: 42px;
  margin: 0;
  padding: 10px var(--markdown-panel-padding);
  border-block-start: 1px solid var(--markdown-border);
  color: var(--markdown-muted);
  background: var(--markdown-message-bg);
}

.markdown-message[data-type="success"] { color: var(--markdown-success); }
.markdown-message[data-type="warning"] { color: var(--markdown-warning); }
.markdown-message[data-type="error"] { color: var(--markdown-error); }

/* Results and table of contents */
.markdown-stats {
  display: grid;
  grid-template-columns: repeat(8, minmax(110px, 1fr));
  margin: 0;
  border-block-end: 1px solid var(--markdown-border);
}

.markdown-stat {
  min-width: 0;
  padding: 12px;
  border-inline-end: 1px solid var(--markdown-border);
}

.markdown-stat:last-child {
  border-inline-end: 0;
}

.markdown-stats dt {
  color: var(--markdown-muted);
  font-size: 12px;
}

.markdown-stats dd {
  margin-block: 3px 0;
  margin-inline: 0;
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.markdown-toc {
  padding: var(--markdown-panel-padding);
}

.markdown-toc-list {
  margin-block-start: 10px;
}

.markdown-toc-list ol {
  display: grid;
  gap: 5px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.markdown-toc-list button {
  display: block;
  max-width: 100%;
  padding: 2px 4px;
  border: 0;
  color: var(--markdown-primary);
  background: transparent;
  text-align: start;
  cursor: pointer;
}

/* Tool description */
.markdown-about {
  padding: 20px 24px;
}

.markdown-about h2 {
  font-size: 20px;
}

.markdown-about h3 {
  margin-block-start: 20px;
  font-size: 16px;
}

.markdown-about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.markdown-privacy {
  padding: 10px 12px;
  border: 1px solid var(--markdown-info-border);
  border-radius: var(--markdown-radius-small);
  color: var(--markdown-info-text);
  background: var(--markdown-info-bg);
}

/* Workspace theme */
.markdown-workspace[data-theme="dark"] {
  --markdown-editor: #1e1e1e;
  --markdown-text: #d4d4d4;
  --markdown-muted: #a8b3c2;
  --markdown-control: #171c23;
  --markdown-border: #303946;
  --markdown-border-strong: #465262;
}

/* Responsive layout */
@media (max-width: 1100px) {
  .markdown-stats {
    grid-template-columns: repeat(4, minmax(110px, 1fr));
  }

  /* Eight statistics wrap into two rows of four at tablet widths. */
  .markdown-stat:nth-child(4) {
    border-inline-end: 0;
  }

  .markdown-stat:nth-child(-n + 4) {
    border-block-end: 1px solid var(--markdown-border);
  }
}

@media (max-width: 760px) {
  .markdown-main {
    width: min(calc(100% - var(--markdown-page-gutter-mobile)), var(--markdown-content-width));
    padding-block-start: 16px;
  }

  .markdown-panel-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .markdown-actions {
    width: 100%;
  }

  .markdown-actions .markdown-button {
    flex: 1 1 auto;
  }

  .markdown-workspace {
    display: flex;
    flex-direction: column;
  }

  .markdown-workspace[data-view-mode="editor"],
  .markdown-workspace[data-view-mode="preview"] {
    display: block;
  }

  .markdown-editor-pane {
    border-inline-end: 0;
    border-block-end: 1px solid var(--markdown-border);
  }

  .markdown-preview-search {
    width: 100%;
  }

  .markdown-search-input {
    width: auto;
    flex: 1;
  }

  .markdown-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* Mobile displays two statistics per row, so every even item closes a row. */
  .markdown-stat {
    border-inline-end: 1px solid var(--markdown-border);
    border-block-end: 1px solid var(--markdown-border);
  }

  .markdown-stat:nth-child(even) {
    border-inline-end: 0;
  }

  .markdown-about-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
}