:root {
  --imposia-viewer-color-ink: #101514;
  --imposia-viewer-color-ink-soft: #25302d;
  --imposia-viewer-color-paper: #f7f2e8;
  --imposia-viewer-color-canvas: #d8d5cc;
  --imposia-viewer-color-white: #fff;
  --imposia-viewer-color-accent: #ef6a3b;
  --imposia-viewer-color-brand-fold: #7165f2;
  --imposia-viewer-color-signal: #9cd4b6;
  --imposia-viewer-color-mode: #aab2af;
  --imposia-viewer-color-readout: #d9dedb;
  --imposia-viewer-color-line: rgb(247 242 232 / 18%);
  --imposia-viewer-color-line-signal: rgb(156 212 182 / 35%);
  --imposia-viewer-color-stage-grid: rgb(16 21 20 / 5%);
  --imposia-viewer-color-stage-label: rgb(16 21 20 / 45%);
  --imposia-viewer-color-page-highlight: rgb(255 255 255 / 80%);
  --imposia-viewer-color-page-shadow-strong: rgb(16 21 20 / 22%);
  --imposia-viewer-color-page-shadow-soft: rgb(16 21 20 / 18%);
  --imposia-viewer-color-state-border: rgb(16 21 20 / 16%);
  --imposia-viewer-color-state-surface: rgb(247 242 232 / 92%);
  --imposia-viewer-color-state-shadow: rgb(16 21 20 / 12%);
  --imposia-viewer-color-spinner-track: rgb(16 21 20 / 20%);

  --imposia-viewer-space-0-5: 2px;
  --imposia-viewer-space-1: 4px;
  --imposia-viewer-space-2: 8px;
  --imposia-viewer-space-3: 12px;
  --imposia-viewer-space-4: 16px;
  --imposia-viewer-space-5: 20px;
  --imposia-viewer-space-6: 24px;
  --imposia-viewer-space-7: 28px;
  --imposia-viewer-space-8: 32px;
  --imposia-viewer-space-9: 36px;
  --imposia-viewer-border-hairline: 1px;
  --imposia-viewer-border-spinner: 2px;
  --imposia-viewer-border-none: 0;
  --imposia-viewer-radius-round: 50%;

  --imposia-viewer-font-sans: Arial, Helvetica, sans-serif;
  --imposia-viewer-font-serif: Georgia, "Times New Roman", serif;
  --imposia-viewer-font-mono: "SFMono-Regular", Consolas, monospace;
  --imposia-viewer-type-size-label: 8px;
  --imposia-viewer-type-size-caption: 9px;
  --imposia-viewer-type-size-readout: 11px;
  --imposia-viewer-type-size-body: 12px;
  --imposia-viewer-type-size-control: 15px;
  --imposia-viewer-type-size-wordmark: 20px;
  --imposia-viewer-type-size-wordmark-mobile: 17px;
  --imposia-viewer-type-size-title: 24px;
  --imposia-viewer-type-weight-regular: 400;
  --imposia-viewer-type-weight-bold: 700;
  --imposia-viewer-type-weight-heavy: 800;
  --imposia-viewer-tracking-display: -0.03em;
  --imposia-viewer-tracking-mode: 0.1em;
  --imposia-viewer-tracking-tag: 0.08em;
  --imposia-viewer-tracking-state: 0.06em;
  --imposia-viewer-tracking-code: 0.12em;
  --imposia-viewer-tracking-stage-label: 0.16em;

  --imposia-viewer-rail-height: 66px;
  --imposia-viewer-rail-height-mobile: 106px;
  --imposia-viewer-identity-gap: 12px;
  --imposia-viewer-identity-padding-inline: 22px;
  --imposia-viewer-identity-height-mobile: 44px;
  --imposia-viewer-identity-padding-inline-mobile: 14px;
  --imposia-viewer-mark-size: 34px;
  --imposia-viewer-mark-size-mobile: 28px;
  --imposia-viewer-toolbar-gap: 5px;
  --imposia-viewer-toolbar-padding-block: 10px;
  --imposia-viewer-toolbar-padding-inline: 14px;
  --imposia-viewer-toolbar-padding-mobile: 8px;
  --imposia-viewer-control-size: 36px;
  --imposia-viewer-control-size-mobile: 32px;
  --imposia-viewer-control-padding-inline: 11px;
  --imposia-viewer-control-padding-inline-mobile: 8px;
  --imposia-viewer-mode-min-width: 58px;
  --imposia-viewer-mode-min-width-mobile: 48px;
  --imposia-viewer-readout-min-width: 64px;
  --imposia-viewer-readout-min-width-mobile: 52px;
  --imposia-viewer-zoom-min-width: 46px;
  --imposia-viewer-divider-height: 22px;
  --imposia-viewer-divider-width: 1px;
  --imposia-viewer-divider-margin-inline: 7px;
  --imposia-viewer-divider-margin-inline-mobile: 2px;
  --imposia-viewer-stage-label-offset-inline: 18px;
  --imposia-viewer-stage-label-offset-block: 12px;
  --imposia-viewer-grid-size: 24px;
  --imposia-viewer-pages-gap: 34px;
  --imposia-viewer-pages-padding-block-start: 42px;
  --imposia-viewer-pages-padding-inline-min: 30px;
  --imposia-viewer-pages-padding-block-end: 84px;
  --imposia-viewer-pages-gap-mobile: 24px;
  --imposia-viewer-pages-padding-block-start-mobile: 24px;
  --imposia-viewer-pages-padding-inline-mobile: 20px;
  --imposia-viewer-pages-padding-block-end-mobile: 56px;
  --imposia-viewer-page-tag-padding-block: 5px;
  --imposia-viewer-page-tag-padding-inline: 7px;
  --imposia-viewer-state-gap: 12px;
  --imposia-viewer-state-min-width: 230px;
  --imposia-viewer-state-padding-block: 18px;
  --imposia-viewer-state-padding-inline: 20px;
  --imposia-viewer-state-max-width: 420px;
  --imposia-viewer-state-inline-gutter: 40px;
  --imposia-viewer-spinner-size: 16px;
  --imposia-viewer-error-gap: 7px;

  --imposia-viewer-shadow-page:
    0 1px 0 var(--imposia-viewer-color-page-highlight) inset,
    0 20px 55px var(--imposia-viewer-color-page-shadow-strong),
    0 2px 8px var(--imposia-viewer-color-page-shadow-soft);
  --imposia-viewer-shadow-state: 0 18px 50px var(--imposia-viewer-color-state-shadow);
  --imposia-viewer-disabled-opacity: 0.34;
  --imposia-viewer-spin-duration: 0.75s;
  --imposia-viewer-spin-duration-reduced: 1.5s;
}

* {
  box-sizing: border-box;
}

body:has(.imposia-viewer) {
  margin: 0;
  overflow: hidden;
  background: var(--imposia-viewer-color-canvas);
}

.imposia-viewer {
  position: relative;
  display: grid;
  container-name: imposia-viewer;
  container-type: inline-size;
  grid-template-rows: auto minmax(0, 1fr);
  width: 100%;
  min-width: 0;
  height: 100dvh;
  overflow: hidden;
  color: var(--imposia-viewer-color-paper);
  background: var(--imposia-viewer-color-ink);
  font-family: var(--imposia-viewer-font-sans);
  outline: none;
}

.imposia-viewer:focus-visible {
  box-shadow: inset 0 0 0 var(--imposia-viewer-border-spinner) var(--imposia-viewer-color-accent);
}

.imposia-rail {
  position: relative;
  z-index: 2;
  display: flex;
  min-width: 0;
  min-height: var(--imposia-viewer-rail-height);
  align-items: stretch;
  justify-content: space-between;
  border-bottom: var(--imposia-viewer-border-hairline) solid var(--imposia-viewer-color-line);
  background: var(--imposia-viewer-color-ink);
}

.imposia-identity {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: var(--imposia-viewer-identity-gap);
  padding: 0 var(--imposia-viewer-identity-padding-inline);
  border-right: var(--imposia-viewer-border-hairline) solid var(--imposia-viewer-color-line);
}

.imposia-mark {
  display: block;
  flex: 0 0 auto;
  width: var(--imposia-viewer-mark-size);
  height: var(--imposia-viewer-mark-size);
  overflow: visible;
  color: var(--imposia-viewer-color-paper);
}

.imposia-mark-outline {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.8;
}

.imposia-mark-fold {
  fill: var(--imposia-viewer-color-brand-fold);
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.imposia-wordmark {
  font-family: var(--imposia-viewer-font-serif);
  font-size: var(--imposia-viewer-type-size-wordmark);
  letter-spacing: var(--imposia-viewer-tracking-display);
}

.imposia-toolbar {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: flex-end;
  gap: var(--imposia-viewer-toolbar-gap);
  padding: var(--imposia-viewer-toolbar-padding-block) var(--imposia-viewer-toolbar-padding-inline);
}

.imposia-control {
  min-width: var(--imposia-viewer-control-size);
  height: var(--imposia-viewer-control-size);
  padding: 0 var(--imposia-viewer-control-padding-inline);
  border: var(--imposia-viewer-border-hairline) solid transparent;
  color: var(--imposia-viewer-color-paper);
  background: transparent;
  font: inherit;
  font-size: var(--imposia-viewer-type-size-control);
  cursor: pointer;
}

.imposia-control:hover:not(:disabled),
.imposia-control:focus-visible {
  border-color: var(--imposia-viewer-color-line);
  background: var(--imposia-viewer-color-ink-soft);
  outline: none;
}

.imposia-control:focus-visible {
  border-color: var(--imposia-viewer-color-accent);
}

.imposia-control:disabled {
  cursor: default;
  opacity: var(--imposia-viewer-disabled-opacity);
}

.imposia-mode {
  min-width: var(--imposia-viewer-mode-min-width);
  color: var(--imposia-viewer-color-mode);
  font-size: var(--imposia-viewer-type-size-caption);
  font-weight: var(--imposia-viewer-type-weight-heavy);
  letter-spacing: var(--imposia-viewer-tracking-mode);
}

.imposia-mode[aria-pressed="true"] {
  color: var(--imposia-viewer-color-signal);
  border-color: var(--imposia-viewer-color-line-signal);
}

.imposia-readout {
  min-width: var(--imposia-viewer-readout-min-width);
  color: var(--imposia-viewer-color-readout);
  font-family: var(--imposia-viewer-font-mono);
  font-size: var(--imposia-viewer-type-size-readout);
  text-align: center;
}

.imposia-zoom {
  min-width: var(--imposia-viewer-zoom-min-width);
}

.imposia-divider {
  width: var(--imposia-viewer-divider-width);
  height: var(--imposia-viewer-divider-height);
  margin: 0 var(--imposia-viewer-divider-margin-inline);
  background: var(--imposia-viewer-color-line);
}

.imposia-stage {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  background-color: var(--imposia-viewer-color-canvas);
  background-image:
    linear-gradient(
      var(--imposia-viewer-color-stage-grid) var(--imposia-viewer-border-hairline),
      transparent var(--imposia-viewer-border-hairline)
    ),
    linear-gradient(
      90deg,
      var(--imposia-viewer-color-stage-grid) var(--imposia-viewer-border-hairline),
      transparent var(--imposia-viewer-border-hairline)
    );
  background-size: var(--imposia-viewer-grid-size) var(--imposia-viewer-grid-size);
}

.imposia-stage::before {
  position: fixed;
  right: var(--imposia-viewer-stage-label-offset-inline);
  bottom: var(--imposia-viewer-stage-label-offset-block);
  color: var(--imposia-viewer-color-stage-label);
  content: "IMPOSIA / OUTPUT SURFACE";
  font-size: var(--imposia-viewer-type-size-label);
  font-weight: var(--imposia-viewer-type-weight-heavy);
  letter-spacing: var(--imposia-viewer-tracking-stage-label);
  pointer-events: none;
}

.imposia-pages {
  display: flex;
  min-width: min-content;
  flex-direction: column;
  align-items: center;
  gap: var(--imposia-viewer-pages-gap);
  padding: var(--imposia-viewer-pages-padding-block-start)
    max(var(--imposia-viewer-pages-padding-inline-min), calc((100vw - 900px) / 2))
    var(--imposia-viewer-pages-padding-block-end);
}

.imposia-viewer[data-mode="single"] .imposia-pages {
  min-height: 100%;
  justify-content: flex-start;
}

.imposia-page {
  position: relative;
  flex: 0 0 auto;
  overflow: hidden;
  background: var(--imposia-viewer-color-white);
  box-shadow: var(--imposia-viewer-shadow-page);
}

.imposia-canvas {
  display: block;
  max-width: none;
  background: var(--imposia-viewer-color-white);
}

.imposia-page-viewer {
  overflow: auto;
  justify-items: center;
}

.imposia-page-viewer .imposia-canonical-frame {
  grid-row: 2;
  align-self: start;
  justify-self: center;
  display: block;
  max-width: none;
  border: var(--imposia-viewer-border-none);
  background: var(--imposia-viewer-color-white);
  box-shadow: var(--imposia-viewer-shadow-page);
  transform-origin: top left;
}

.imposia-page-viewer .imposia-rail {
  position: sticky;
  top: 0;
  width: 100%;
  max-width: 100%;
  justify-self: stretch;
}

.imposia-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;
}

.imposia-toc-toggle,
.imposia-search-toggle,
.imposia-thumbnail-toggle,
.imposia-inspector-toggle {
  min-width: auto;
  color: var(--imposia-viewer-color-mode);
  font-size: var(--imposia-viewer-type-size-caption);
  font-weight: var(--imposia-viewer-type-weight-heavy);
  letter-spacing: var(--imposia-viewer-tracking-mode);
}

.imposia-toc-panel,
.imposia-search-panel,
.imposia-thumbnail-panel,
.imposia-inspector-panel {
  position: absolute;
  box-sizing: border-box;
  top: var(--imposia-viewer-rail-height);
  left: 0;
  z-index: 3;
  width: min(24rem, 100%);
  max-height: calc(100% - var(--imposia-viewer-rail-height));
  padding: 1rem;
  overflow: auto;
  border-right: var(--imposia-viewer-border-hairline) solid var(--imposia-viewer-color-line);
  border-bottom: var(--imposia-viewer-border-hairline) solid var(--imposia-viewer-color-line);
  background: var(--imposia-viewer-color-ink);
  box-shadow: var(--imposia-viewer-shadow-state);
}

.imposia-thumbnail-panel {
  width: min(28rem, 100%);
}

.imposia-inspector-panel:focus-visible {
  box-shadow:
    inset 0 0 0 var(--imposia-viewer-border-spinner) var(--imposia-viewer-color-accent),
    var(--imposia-viewer-shadow-state);
  outline: none;
}

.imposia-inspector-heading {
  margin: 0 0 var(--imposia-viewer-space-3);
  color: var(--imposia-viewer-color-signal);
  font-family: var(--imposia-viewer-font-mono);
  font-size: var(--imposia-viewer-type-size-caption);
  letter-spacing: var(--imposia-viewer-tracking-state);
}

.imposia-inspector-list {
  display: grid;
  gap: var(--imposia-viewer-space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.imposia-inspector-finding {
  display: grid;
  width: 100%;
  gap: var(--imposia-viewer-space-1);
  padding: var(--imposia-viewer-space-3);
  border: var(--imposia-viewer-border-hairline) solid transparent;
  color: inherit;
  background: transparent;
  font: inherit;
  text-align: start;
}

button.imposia-inspector-finding {
  cursor: pointer;
}

button.imposia-inspector-finding:hover,
button.imposia-inspector-finding:focus-visible,
button.imposia-inspector-finding[aria-current="true"] {
  border-color: var(--imposia-viewer-color-accent);
  background: var(--imposia-viewer-color-ink-soft);
  outline: none;
}

.imposia-inspector-code,
.imposia-inspector-metadata,
.imposia-inspector-recovery {
  color: var(--imposia-viewer-color-signal);
  font-family: var(--imposia-viewer-font-mono);
  font-size: var(--imposia-viewer-type-size-caption);
  font-weight: var(--imposia-viewer-type-weight-heavy);
  letter-spacing: var(--imposia-viewer-tracking-state);
}

.imposia-inspector-message,
.imposia-inspector-empty {
  line-height: 1.45;
}

.imposia-inspector-recovery {
  color: var(--imposia-viewer-color-readout);
}

.imposia-inspector-highlight {
  position: absolute;
  z-index: 1;
  border: 3px solid var(--imposia-viewer-color-accent);
  box-shadow: 0 0 0 2px rgb(255 255 255 / 72%);
  pointer-events: none;
}

.imposia-thumbnail-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--imposia-viewer-space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.imposia-thumbnail-button {
  display: grid;
  width: 100%;
  gap: var(--imposia-viewer-space-2);
  padding: var(--imposia-viewer-space-2);
  border: var(--imposia-viewer-border-hairline) solid transparent;
  color: inherit;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.imposia-thumbnail-button:hover,
.imposia-thumbnail-button:focus-visible,
.imposia-thumbnail-button[aria-current="page"] {
  border-color: var(--imposia-viewer-color-accent);
  background: var(--imposia-viewer-color-ink-soft);
  outline: none;
}

.imposia-thumbnail-preview {
  display: flex;
  width: 100%;
  flex-direction: column;
  gap: 7%;
  justify-content: flex-start;
  padding: 12%;
  overflow: hidden;
  border: var(--imposia-viewer-border-hairline) solid var(--imposia-viewer-color-line);
  background: var(--imposia-viewer-color-white);
  box-shadow: var(--imposia-viewer-shadow-page);
}

.imposia-thumbnail-preview-line {
  display: block;
  height: 3%;
  min-height: 2px;
  background: var(--imposia-viewer-color-ink-soft);
  opacity: 0.58;
}

.imposia-thumbnail-label {
  color: var(--imposia-viewer-color-signal);
  font-family: var(--imposia-viewer-font-mono);
  font-size: var(--imposia-viewer-type-size-caption);
  font-weight: var(--imposia-viewer-type-weight-heavy);
  letter-spacing: var(--imposia-viewer-tracking-state);
  text-align: center;
}

.imposia-search-form {
  display: flex;
  gap: var(--imposia-viewer-space-2);
}

.imposia-search-input {
  min-width: 0;
  flex: 1 1 auto;
  padding: var(--imposia-viewer-space-2) var(--imposia-viewer-space-3);
  border: var(--imposia-viewer-border-hairline) solid var(--imposia-viewer-color-line);
  color: var(--imposia-viewer-color-paper);
  background: var(--imposia-viewer-color-ink-soft);
  font: inherit;
}

.imposia-search-input:focus-visible {
  border-color: var(--imposia-viewer-color-accent);
  outline: none;
}

.imposia-search-navigation {
  display: flex;
  align-items: center;
  gap: var(--imposia-viewer-space-1);
  margin-block: var(--imposia-viewer-space-2);
}

.imposia-search-status {
  margin-inline-start: auto;
  color: var(--imposia-viewer-color-readout);
  font-family: var(--imposia-viewer-font-mono);
  font-size: var(--imposia-viewer-type-size-readout);
}

.imposia-search-results {
  display: grid;
  gap: var(--imposia-viewer-space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.imposia-search-result {
  display: grid;
  width: 100%;
  gap: var(--imposia-viewer-space-1);
  padding: var(--imposia-viewer-space-3);
  border: var(--imposia-viewer-border-hairline) solid transparent;
  color: inherit;
  background: transparent;
  font: inherit;
  text-align: start;
  cursor: pointer;
}

.imposia-search-result:hover,
.imposia-search-result:focus-visible,
.imposia-search-result[aria-current="true"] {
  border-color: var(--imposia-viewer-color-accent);
  background: var(--imposia-viewer-color-ink-soft);
  outline: none;
}

.imposia-search-result-metadata {
  color: var(--imposia-viewer-color-signal);
  font-size: var(--imposia-viewer-type-size-caption);
  font-weight: var(--imposia-viewer-type-weight-heavy);
  letter-spacing: var(--imposia-viewer-tracking-state);
}

.imposia-search-result-context {
  line-height: 1.45;
}

.imposia-toc-list {
  display: grid;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.imposia-toc-list .imposia-toc-list {
  padding-inline-start: 1rem;
}

.imposia-toc-link {
  width: 100%;
  padding: 0.5rem 0.625rem;
  border: var(--imposia-viewer-border-hairline) solid transparent;
  color: inherit;
  background: transparent;
  font: inherit;
  text-align: start;
  cursor: pointer;
}

.imposia-toc-entry > .imposia-toc-link {
  font-weight: var(--imposia-viewer-type-weight-heavy);
}

.imposia-toc-link:hover,
.imposia-toc-link:focus-visible {
  border-color: var(--imposia-viewer-color-accent);
  background: var(--imposia-viewer-color-ink-soft);
  outline: none;
}

.imposia-page-tag {
  position: absolute;
  top: 0;
  right: 0;
  padding: var(--imposia-viewer-page-tag-padding-block)
    var(--imposia-viewer-page-tag-padding-inline);
  color: var(--imposia-viewer-color-white);
  background: var(--imposia-viewer-color-accent);
  font-family: var(--imposia-viewer-font-mono);
  font-size: var(--imposia-viewer-type-size-label);
  letter-spacing: var(--imposia-viewer-tracking-tag);
}

.imposia-state {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: var(--imposia-viewer-state-gap);
  min-width: var(--imposia-viewer-state-min-width);
  padding: var(--imposia-viewer-state-padding-block) var(--imposia-viewer-state-padding-inline);
  transform: translate(-50%, -50%);
  border: var(--imposia-viewer-border-hairline) solid var(--imposia-viewer-color-state-border);
  color: var(--imposia-viewer-color-ink);
  background: var(--imposia-viewer-color-state-surface);
  box-shadow: var(--imposia-viewer-shadow-state);
  font-size: var(--imposia-viewer-type-size-body);
  font-weight: var(--imposia-viewer-type-weight-bold);
  letter-spacing: var(--imposia-viewer-tracking-state);
  text-transform: uppercase;
}

.imposia-state[hidden] {
  display: none;
}

.imposia-spinner {
  width: var(--imposia-viewer-spinner-size);
  height: var(--imposia-viewer-spinner-size);
  border: var(--imposia-viewer-border-spinner) solid var(--imposia-viewer-color-spinner-track);
  border-top-color: var(--imposia-viewer-color-accent);
  border-radius: var(--imposia-viewer-radius-round);
  animation: imposia-spin var(--imposia-viewer-spin-duration) linear infinite;
}

.imposia-error {
  width: min(
    var(--imposia-viewer-state-max-width),
    calc(100% - var(--imposia-viewer-state-inline-gutter))
  );
  flex-direction: column;
  align-items: flex-start;
  gap: var(--imposia-viewer-error-gap);
  text-transform: none;
}

.imposia-error strong {
  font-family: var(--imposia-viewer-font-serif);
  font-size: var(--imposia-viewer-type-size-title);
  font-weight: var(--imposia-viewer-type-weight-regular);
  letter-spacing: var(--imposia-viewer-tracking-display);
}

.imposia-error-code {
  color: var(--imposia-viewer-color-accent);
  font-family: var(--imposia-viewer-font-mono);
  font-size: var(--imposia-viewer-type-size-caption);
  font-weight: var(--imposia-viewer-type-weight-heavy);
  letter-spacing: var(--imposia-viewer-tracking-code);
}

@keyframes imposia-spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 720px) {
  .imposia-rail {
    min-height: var(--imposia-viewer-rail-height-mobile);
    flex-direction: column;
  }

  .imposia-toc-panel,
  .imposia-search-panel,
  .imposia-thumbnail-panel,
  .imposia-inspector-panel {
    top: var(--imposia-viewer-rail-height-mobile);
    max-height: calc(100% - var(--imposia-viewer-rail-height-mobile));
  }

  .imposia-identity {
    min-height: var(--imposia-viewer-identity-height-mobile);
    padding: 0 var(--imposia-viewer-identity-padding-inline-mobile);
    border-right: 0;
    border-bottom: var(--imposia-viewer-border-hairline) solid var(--imposia-viewer-color-line);
  }

  .imposia-mark {
    width: var(--imposia-viewer-mark-size-mobile);
    height: var(--imposia-viewer-mark-size-mobile);
  }

  .imposia-wordmark {
    font-size: var(--imposia-viewer-type-size-wordmark-mobile);
  }

  .imposia-toolbar {
    justify-content: flex-start;
    overflow-x: auto;
    padding: var(--imposia-viewer-toolbar-padding-mobile);
  }

  .imposia-divider {
    margin: 0 var(--imposia-viewer-divider-margin-inline-mobile);
  }

  .imposia-control {
    min-width: var(--imposia-viewer-control-size-mobile);
    height: var(--imposia-viewer-control-size-mobile);
    padding: 0 var(--imposia-viewer-control-padding-inline-mobile);
  }

  .imposia-mode {
    min-width: var(--imposia-viewer-mode-min-width-mobile);
    font-size: var(--imposia-viewer-type-size-label);
  }

  .imposia-readout {
    min-width: var(--imposia-viewer-readout-min-width-mobile);
  }

  .imposia-pages {
    width: 100%;
    min-width: 100%;
    gap: var(--imposia-viewer-pages-gap-mobile);
    padding: var(--imposia-viewer-pages-padding-block-start-mobile)
      var(--imposia-viewer-pages-padding-inline-mobile)
      var(--imposia-viewer-pages-padding-block-end-mobile);
  }

  .imposia-page {
    max-width: 100%;
  }

  .imposia-canvas {
    width: auto;
    max-width: 100%;
    height: auto;
  }
}

@container imposia-viewer (max-width: 720px) {
  .imposia-rail {
    min-height: var(--imposia-viewer-rail-height-mobile);
    flex-direction: column;
  }

  .imposia-toc-panel,
  .imposia-search-panel,
  .imposia-thumbnail-panel,
  .imposia-inspector-panel {
    top: var(--imposia-viewer-rail-height-mobile);
    max-height: calc(100% - var(--imposia-viewer-rail-height-mobile));
  }

  .imposia-identity {
    min-height: var(--imposia-viewer-identity-height-mobile);
    padding: 0 var(--imposia-viewer-identity-padding-inline-mobile);
    border-right: 0;
    border-bottom: var(--imposia-viewer-border-hairline) solid var(--imposia-viewer-color-line);
  }

  .imposia-mark {
    width: var(--imposia-viewer-mark-size-mobile);
    height: var(--imposia-viewer-mark-size-mobile);
  }

  .imposia-wordmark {
    font-size: var(--imposia-viewer-type-size-wordmark-mobile);
  }

  .imposia-toolbar {
    justify-content: flex-start;
    overflow-x: auto;
    padding: var(--imposia-viewer-toolbar-padding-mobile);
  }

  .imposia-divider {
    margin: 0 var(--imposia-viewer-divider-margin-inline-mobile);
  }

  .imposia-control {
    min-width: var(--imposia-viewer-control-size-mobile);
    height: var(--imposia-viewer-control-size-mobile);
    padding: 0 var(--imposia-viewer-control-padding-inline-mobile);
  }

  .imposia-mode {
    min-width: var(--imposia-viewer-mode-min-width-mobile);
    font-size: var(--imposia-viewer-type-size-label);
  }

  .imposia-readout {
    min-width: var(--imposia-viewer-readout-min-width-mobile);
  }

  .imposia-pages {
    width: 100%;
    min-width: 100%;
    gap: var(--imposia-viewer-pages-gap-mobile);
    padding: var(--imposia-viewer-pages-padding-block-start-mobile)
      var(--imposia-viewer-pages-padding-inline-mobile)
      var(--imposia-viewer-pages-padding-block-end-mobile);
  }

  .imposia-page {
    max-width: 100%;
  }

  .imposia-canvas {
    width: auto;
    max-width: 100%;
    height: auto;
  }
}

@media print {
  .imposia-inspector-toggle,
  .imposia-inspector-panel,
  .imposia-inspector-highlight {
    display: none;
  }
}

@media (max-width: 390px) {
  .imposia-toolbar {
    width: 100%;
    max-width: 100%;
    justify-content: flex-start;
    gap: var(--imposia-viewer-toolbar-gap);
    padding: var(--imposia-viewer-space-2);
    overflow-x: auto;
    scroll-padding-inline: var(--imposia-viewer-space-2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .imposia-spinner {
    animation-duration: var(--imposia-viewer-spin-duration-reduced);
  }
}