/* Tool surfaces keep the Butterfly page shell and only style their content area. */
.tool-home {
  width: 100%;
  margin: 0 auto;
}

.workspace-page {
  width: min(100%, 900px);
  margin: 0 auto;
}

.tool-home-intro {
  max-width: 820px;
  margin: 0 auto;
  padding: 1rem 0 2.25rem;
  text-align: center;
}

.tool-home-intro h1,
.workspace-heading h1 {
  margin: .2rem 0 .55rem;
  color: var(--text-highlight-color);
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -.04em;
}

.tool-home-intro p,
.workspace-heading p {
  margin: 0;
  color: var(--font-color);
}

.tool-search {
  display: flex;
  align-items: center;
  gap: .65rem;
  width: min(100%, 720px);
  margin: 1.45rem auto 0;
  padding: .55rem .65rem .55rem .9rem;
  border: 1px solid var(--text-bg-hover);
  border-radius: 999px;
  background: var(--card-bg);
  box-shadow: 0 3px 18px color-mix(in srgb, var(--font-color) 7%, transparent);
}

.tool-search-mark {
  color: var(--theme-color);
  font-size: 1.4rem;
  line-height: 1;
}

.tool-search input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  color: var(--font-color);
  background: transparent;
}

.tool-search button {
  padding: .5rem .9rem;
  border: 0;
  border-radius: 999px;
  color: #fff;
  background: var(--theme-color);
  cursor: pointer;
  font: inherit;
  font-size: .86rem;
}

.tool-search button:hover,
.tool-search button:focus-visible {
  filter: brightness(1.08);
}

.tool-search input::placeholder {
  color: var(--font-color);
  opacity: .65;
}

.tool-list-section {
  margin: 1rem auto 0;
  max-width: 1120px;
}

.workspace h2 {
  margin: 0;
  color: var(--text-highlight-color);
  font-size: 1.15rem;
}
.tool-item-desc,
.tool-item-meta,
.tool-empty,
.workspace-status,
.workspace-contract,
.reading-noscript {
  color: var(--font-color);
  opacity: .78;
}

.tool-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tool-item {
  display: flex;
  align-items: center;
  min-height: 7.5rem;
  gap: .55rem;
  padding: 1.1rem 1rem;
  border: 1px solid color-mix(in srgb, var(--text-bg-hover) 85%, transparent);
  border-radius: 10px;
  background: color-mix(in srgb, var(--card-bg) 88%, transparent);
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.tool-item:hover {
  border-color: var(--text-bg-hover);
  box-shadow: 0 7px 20px color-mix(in srgb, var(--font-color) 9%, transparent);
  transform: translateY(-2px);
}

.tool-item-link {
  display: flex;
  min-width: 0;
  flex: 1;
  align-items: center;
  gap: .85rem;
  color: inherit;
  text-decoration: none;
}

.tool-item-icon {
  display: grid;
  flex: 0 0 2.25rem;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 12px;
  color: var(--theme-color);
  background: color-mix(in srgb, var(--theme-color) 14%, transparent);
  font-size: 1.2rem;
}

.tool-item-main {
  min-width: 0;
  flex: 1;
}

.tool-item-title {
  display: block;
  color: var(--text-highlight-color);
  font-size: 1rem;
  font-weight: 650;
}

.tool-item-desc {
  display: block;
  margin: .3rem 0 0;
  overflow: hidden;
  font-size: .84rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-item-meta {
  display: block;
  margin-top: .45rem;
  font-size: .72rem;
}

.tool-favorite {
  width: 1.8rem;
  padding: .15rem;
  border: 0;
  color: var(--font-color);
  background: transparent;
  cursor: pointer;
}

.tool-favorite[aria-pressed="true"] {
  color: var(--theme-color);
}

.tool-item-open {
  color: var(--font-color);
  font-size: 1.2rem;
  opacity: .7;
}

/* The tools landing page is intentionally wider than article pages; the native
   Butterfly shell, header, background and theme controls remain untouched. */
#content-inner.layout:has(.tool-home) {
  width: 100%;
  max-width: none;
  margin-inline: 0;
  padding-inline: 0;
}

#content-inner.layout:has(.tool-home) #page {
  width: 100%;
}

#content-inner.layout:has(.tool-home) #aside-content {
  display: none;
}

/* Tool workspaces use an explicit shell class so the profile column never
   depends on :has() support or the theme's generic responsive threshold. */
#content-inner.layout.tool-workspace-layout {
  align-items: flex-start;
  max-width: 1360px;
}

#content-inner.layout.tool-workspace-layout > #page {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  box-sizing: border-box;
  min-width: 0;
  width: 100% !important;
}

#content-inner.layout.tool-workspace-layout > #page > #article-container {
  flex: 1 1 auto;
  min-width: 0;
  width: auto !important;
}

#content-inner.layout.tool-workspace-layout > #page > #aside-content {
  box-sizing: border-box;
  flex: 0 0 280px;
  min-width: 0;
  width: 280px !important;
}

@media screen and (max-width: 900px) {
  #content-inner.layout.tool-workspace-layout {
    width: 100%;
    max-width: none;
    padding-inline: clamp(.65rem, 3vw, 1rem);
  }

  #content-inner.layout.tool-workspace-layout > #page {
    display: block;
    width: 100% !important;
  }

  #content-inner.layout.tool-workspace-layout > #page > #article-container {
    width: 100% !important;
  }

  #content-inner.layout.tool-workspace-layout > #page > #aside-content {
    display: none;
  }
}

body:has(.tool-home) #to_comment {
  display: none !important;
}

.workspace-back {
  margin: 0 0 1.5rem;
  color: var(--font-color);
  font-size: .85rem;
}

.workspace {
  margin-top: 1.6rem;
  padding: clamp(1rem, 3vw, 1.5rem);
  border: 1px solid var(--text-bg-hover);
  border-radius: 10px;
  background: var(--card-bg);
}

.workspace-contract {
  margin: .75rem 0 1.1rem;
  font-size: .82rem;
}

.workspace-contract summary {
  cursor: pointer;
  color: var(--theme-color);
}

.workspace-contract ul {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem 1rem;
  margin: .6rem 0 0;
  padding-left: 1.2rem;
}

.workspace label {
  display: block;
  margin: .75rem 0 .3rem;
  color: var(--font-color);
  font-size: .82rem;
}

.workspace textarea {
  width: 100%;
  min-height: 9rem;
  padding: .75rem;
  resize: vertical;
  border: 1px solid var(--text-bg-hover);
  border-radius: 7px;
  outline: 0;
  color: var(--font-color);
  background: var(--global-bg);
  font: .9rem ui-monospace, SFMono-Regular, Consolas, monospace;
}

.workspace textarea:focus {
  border-color: var(--theme-color);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--theme-color) 20%, transparent);
}

.workspace-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: .8rem 0;
}

.workspace-actions button {
  padding: .45rem .7rem;
  border: 1px solid var(--text-bg-hover);
  border-radius: 6px;
  color: var(--font-color);
  background: var(--card-bg);
  cursor: pointer;
}

.workspace-actions button:hover:not(:disabled) {
  border-color: var(--theme-color);
  color: var(--theme-color);
}

.workspace-actions button:disabled {
  cursor: not-allowed;
  opacity: .5;
}

.workspace-dropzone {
  padding: .75rem;
  border: 1px dashed var(--text-bg-hover);
  border-radius: 7px;
  color: var(--font-color);
  text-align: center;
}

.workspace-file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.workspace-dropzone[data-active="true"] {
  border-color: var(--theme-color);
  background: color-mix(in srgb, var(--theme-color) 12%, transparent);
}

.workspace-status {
  min-height: 1.5rem;
  margin: .45rem 0;
  font-size: .82rem;
}

.codec-page,
.markdown-editor-page,
.latex-editor-page,
.image-tool-page,
.document-converter-page {
  width: min(100%, 1180px);
  margin-inline: auto;
}

.latex-editor-page {
  width: 100%;
}

#content-inner.layout.latex-tool-layout {
  align-items: flex-start;
  max-width: 1680px;
}

#content-inner.layout.latex-tool-layout > #page,
#content-inner.layout.latex-tool-layout > #page > #article-container {
  box-sizing: border-box;
  min-width: 0;
  width: 100% !important;
}

#content-inner.layout.latex-tool-layout > #page > #aside-content {
  display: none !important;
}

.latex-editor-page {
  position: relative;
  display: block;
}

.latex-main-column {
  min-width: 0;
}

.latex-editor-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin: 1rem 0 .8rem;
}

.latex-editor-actions button {
  padding: .45rem .72rem;
  border: 1px solid var(--text-bg-hover);
  border-radius: 6px;
  color: var(--font-color);
  background: var(--card-bg);
  cursor: pointer;
  font: inherit;
}

.latex-editor-actions button:hover,
.latex-editor-actions button:focus-visible {
  border-color: var(--theme-color);
  color: var(--theme-color);
}

.latex-editor-actions span {
  margin-left: auto;
  color: var(--font-color);
  font-size: .78rem;
  opacity: .72;
}

.latex-editor-actions .latex-export-controls {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-left: .35rem;
  padding-left: .75rem;
  border-left: 1px solid color-mix(in srgb, var(--font-color) 14%, transparent);
  opacity: 1;
}

.latex-export-controls label {
  color: var(--font-color);
  font-size: .78rem;
  white-space: nowrap;
}

.latex-export-controls select {
  min-height: 2.15rem;
  padding: .32rem 1.8rem .32rem .55rem;
  border: 1px solid var(--text-bg-hover);
  border-radius: 6px;
  color: var(--font-color);
  background: var(--card-bg);
  font: inherit;
}

.latex-editor-actions #latex-status {
  margin-left: auto;
}

.latex-reference-panel {
  --latex-reference-width: 720px;
  position: fixed;
  z-index: 90;
  top: 50%;
  right: max(.75rem, calc((100vw - 1680px) / 2 + .75rem));
  display: flex;
  box-sizing: border-box;
  width: min(var(--latex-reference-width), calc(100vw - 4rem));
  height: min(760px, calc(100vh - 7rem));
  min-height: 28rem;
  flex-direction: column;
  overflow: visible;
  border: 1px solid color-mix(in srgb, var(--font-color) 13%, transparent);
  border-radius: 10px;
  color: var(--font-color);
  background: color-mix(in srgb, var(--card-bg) 97%, transparent);
  box-shadow: 0 12px 30px rgba(26, 35, 52, .14);
  transform: translateY(-50%);
  transition: transform .3s cubic-bezier(.22, 1, .36, 1), opacity .2s ease, visibility 0s linear;
}

.latex-reference-panel[data-open="false"] {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translate(calc(100% + 4rem), -50%);
  transition: transform .28s cubic-bezier(.4, 0, 1, 1), opacity .18s ease, visibility 0s linear .28s;
}

.latex-reference-panel[data-resizing="true"] {
  transition: none;
  user-select: none;
}

.latex-reference-resize {
  position: absolute;
  z-index: 3;
  top: 0;
  bottom: 0;
  left: -6px;
  width: 12px;
  margin: 0;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  cursor: col-resize;
  touch-action: none;
}

.latex-reference-resize::before {
  position: absolute;
  top: 3.8rem;
  bottom: 1rem;
  left: 50%;
  width: 1px;
  background: color-mix(in srgb, var(--font-color) 18%, transparent);
  content: '';
  transform: translateX(-50%);
  transition: width .14s ease, background .14s ease;
}

.latex-reference-resize:hover::before,
.latex-reference-resize:focus-visible::before,
.latex-reference-panel[data-resizing="true"] .latex-reference-resize::before {
  width: 3px;
  background: var(--theme-color);
}

.latex-reference-toggle {
  display: grid;
  width: 2.35rem;
  height: 3.35rem;
  padding: 0;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--font-color) 14%, transparent);
  color: var(--font-color);
  background: var(--card-bg);
  box-shadow: 0 8px 20px rgba(26, 35, 52, .2);
  cursor: pointer;
}

.latex-reference-toggle:hover,
.latex-reference-toggle:focus-visible {
  color: var(--theme-color);
}

.latex-reference-toggle svg {
  width: 1.15rem;
  height: 1.15rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.latex-reference-toggle.is-collapse {
  position: absolute;
  z-index: 4;
  top: 50%;
  left: -2.35rem;
  border-right: 0;
  border-radius: 9px 0 0 9px;
  transform: translateY(-50%);
}

.latex-reference-toggle.is-expand {
  position: fixed;
  z-index: 91;
  top: 50%;
  right: 0;
  border-right: 0;
  border-radius: 9px 0 0 9px;
  transform: translateY(-50%);
}

.latex-reference-toggle.is-expand[hidden] {
  display: none;
}

.latex-reference-heading {
  padding: 1rem 1rem .7rem;
  border-bottom: 1px solid color-mix(in srgb, var(--font-color) 10%, transparent);
}

.latex-reference-heading h2 {
  margin: 0 0 .65rem;
  color: var(--text-highlight-color);
  font-size: 1.15rem;
}

.latex-reference-heading input {
  box-sizing: border-box;
  width: 100%;
  padding: .48rem .65rem;
  border: 1px solid color-mix(in srgb, var(--font-color) 16%, transparent);
  border-radius: 6px;
  outline: 0;
  color: var(--font-color);
  background: var(--card-bg);
  font: inherit;
}

.latex-reference-heading input:focus {
  border-color: var(--theme-color);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--theme-color) 14%, transparent);
}

.latex-reference-filters {
  display: flex;
  gap: .3rem;
  padding: .65rem 1rem;
  overflow-x: auto;
  border-bottom: 1px solid color-mix(in srgb, var(--font-color) 9%, transparent);
}

.latex-reference-filters button {
  padding: .26rem .48rem;
  border: 0;
  border-radius: 999px;
  color: var(--font-color);
  background: transparent;
  cursor: pointer;
  font: inherit;
  font-size: .75rem;
  white-space: nowrap;
}

.latex-reference-filters button:hover,
.latex-reference-filters button[aria-pressed="true"] {
  color: var(--theme-color);
  background: color-mix(in srgb, var(--theme-color) 11%, transparent);
}

.latex-reference-groups {
  min-height: 0;
  flex: 1;
  padding: 0 1rem 1rem;
  overflow: auto;
}

.latex-reference-group h3 {
  position: sticky;
  z-index: 1;
  top: 0;
  margin: 0;
  padding: .85rem 0 .45rem;
  color: var(--text-highlight-color);
  background: var(--card-bg);
  font-size: .86rem;
}

.latex-reference-group > table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: .72rem;
}

.latex-reference-group > table th,
.latex-reference-group > table > tbody > tr > td {
  padding: .48rem .35rem;
  border: 1px solid color-mix(in srgb, var(--font-color) 12%, transparent);
  vertical-align: middle;
}

.latex-reference-group > table th:first-child,
.latex-reference-group > table > tbody > tr > td:first-child {
  width: 56%;
}

.latex-reference-group > table th:last-child,
.latex-reference-group > table > tbody > tr > td:last-child {
  width: 44%;
}

.latex-reference-group > table th {
  color: color-mix(in srgb, var(--font-color) 65%, transparent);
  font-weight: 500;
  text-align: left;
}

.latex-reference-code {
  display: block;
  width: 100%;
  overflow-x: auto;
  padding: 0;
  border: 0;
  color: var(--font-color);
  background: transparent;
  cursor: copy;
  text-align: left;
}

.latex-reference-code:hover,
.latex-reference-code:focus-visible {
  color: var(--theme-color);
}

.latex-reference-code code {
  overflow-wrap: normal;
  white-space: pre;
  font-size: .68rem;
  line-height: 1.45;
}

.latex-reference-result {
  overflow: auto;
  text-align: center;
}

.latex-reference-result .katex {
  font-size: .9rem;
}

.latex-reference-math.is-display {
  display: block;
  overflow-x: auto;
}

.latex-reference-section,
.latex-reference-subsection {
  display: block;
  padding-bottom: .2rem;
  border-bottom: 1px solid color-mix(in srgb, var(--theme-color) 45%, transparent);
  color: var(--text-highlight-color);
  text-align: left;
}

.latex-reference-subsection {
  border-bottom: 0;
  font-size: .86em;
}

.latex-reference-subsubsection {
  display: block;
  color: var(--text-highlight-color);
  font-size: .78em;
  text-align: left;
}

.latex-reference-document {
  display: grid;
  gap: .2rem;
  text-align: center;
}

.latex-reference-document > span {
  color: color-mix(in srgb, var(--font-color) 64%, transparent);
  font-size: .8em;
}

.latex-reference-document > p {
  margin: .45rem 0 0;
  padding-top: .4rem;
  border-top: 1px solid color-mix(in srgb, var(--font-color) 14%, transparent);
  text-align: left;
}

.latex-reference-contents,
.latex-reference-result ul,
.latex-reference-result ol {
  margin: 0;
  padding-left: 1.1rem;
  text-align: left;
}

.latex-reference-contents li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dotted color-mix(in srgb, var(--font-color) 24%, transparent);
}

.latex-reference-abstract {
  display: block;
  padding: .3rem;
  border-left: 2px solid var(--theme-color);
  text-align: left;
}

.latex-reference-pagebreak {
  display: block;
  border-top: 1px dashed color-mix(in srgb, var(--font-color) 32%, transparent);
  color: color-mix(in srgb, var(--font-color) 58%, transparent);
  font-size: .78em;
}

.latex-reference-quote {
  margin: 0;
  padding: .35rem .5rem;
  border-left: 2px solid var(--theme-color);
  color: color-mix(in srgb, var(--font-color) 78%, transparent);
  text-align: left;
}

.latex-reference-alignment {
  display: grid;
  gap: .5rem;
}

.latex-reference-alignment span:last-child {
  text-align: right;
}

.latex-reference-result dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .15rem .45rem;
  margin: 0;
  text-align: left;
}

.latex-reference-result dt {
  font-weight: 700;
}

.latex-reference-result dd {
  margin: 0;
}

.latex-reference-table-figure {
  margin: 0;
}

.latex-reference-table-figure figcaption,
.latex-reference-figure figcaption,
.latex-reference-two-figures figcaption {
  margin-top: .3rem;
  color: color-mix(in srgb, var(--font-color) 68%, transparent);
  font-size: .78em;
}

.latex-reference-table {
  width: 100%;
  border-collapse: collapse;
}

.latex-reference-table th,
.latex-reference-table td {
  padding: .16rem;
  border: 1px solid color-mix(in srgb, var(--font-color) 20%, transparent);
}

.latex-reference-table.is-booktabs th,
.latex-reference-table.is-booktabs td {
  border-width: 0 0 1px;
}

.latex-reference-table.is-booktabs tr:first-child th {
  border-top: 2px solid currentColor;
  border-bottom: 1px solid currentColor;
}

.latex-reference-table.is-booktabs tr:last-child td {
  border-bottom: 2px solid currentColor;
}

.latex-reference-figure,
.latex-reference-two-figures figure {
  margin: 0;
}

.latex-reference-figure > span,
.latex-reference-two-figures figure > span {
  display: grid;
  min-height: 3.2rem;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--font-color) 18%, transparent);
  background: color-mix(in srgb, var(--theme-color) 7%, var(--card-bg));
  font-size: 1.35rem;
}

.latex-reference-two-figures {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .35rem;
}

.latex-reference-result a {
  color: var(--theme-color);
}

.latex-reference-bibliography {
  display: block;
  text-align: left;
}

.latex-reference-group[hidden],
[data-reference-entry][hidden] {
  display: none !important;
}

.latex-workbench {
  --latex-source-width: 38%;
  display: grid;
  grid-template-columns: minmax(20rem, var(--latex-source-width)) 10px minmax(0, 1fr);
  height: clamp(780px, 84vh, 1050px);
  min-height: 0;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--font-color) 14%, transparent);
  border-radius: 10px;
  background: var(--card-bg);
  box-shadow:
    0 18px 42px rgba(26, 35, 52, .22),
    0 6px 16px rgba(26, 35, 52, .13),
    inset 0 1px 0 color-mix(in srgb, white 55%, transparent),
    inset 0 -10px 18px rgba(26, 35, 52, .05);
}

.latex-source-pane,
.latex-preview-pane {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  overflow: hidden;
  background: var(--card-bg);
}

.latex-source-pane {
  box-shadow: 7px 0 18px rgba(26, 35, 52, .09);
}

.latex-resize-handle {
  position: relative;
  z-index: 3;
  width: 10px;
  min-width: 10px;
  height: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  color: var(--theme-color);
  background: transparent;
  cursor: col-resize;
  touch-action: none;
}

.latex-resize-handle::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: color-mix(in srgb, var(--font-color) 15%, transparent);
  content: '';
  transform: translateX(-50%);
  transition: width .15s ease, background .15s ease;
}

.latex-resize-handle:hover::before,
.latex-resize-handle:focus-visible::before,
.latex-workbench[data-resizing="true"] .latex-resize-handle::before {
  width: 3px;
  background: var(--theme-color);
}

.latex-resize-handle:focus-visible {
  outline: 0;
}

.latex-pane-label {
  position: relative;
  z-index: 2;
  padding: .55rem .8rem;
  border-bottom: 1px solid color-mix(in srgb, var(--font-color) 11%, transparent);
  color: var(--font-color);
  background: var(--card-bg);
  box-shadow: 0 5px 12px rgba(26, 35, 52, .08);
  font-size: .78rem;
  font-weight: 650;
  letter-spacing: .03em;
  opacity: .82;
}

.latex-source-editor {
  min-height: 0;
  flex: 1;
  overflow: hidden;
}

.latex-source-editor .cm-editor {
  height: 100%;
  color: var(--font-color);
  background: var(--card-bg);
  font: .9rem/1.68 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.latex-source-editor .cm-editor.cm-focused {
  outline: 0;
}

.latex-source-editor .cm-scroller {
  overflow: auto;
  font-family: inherit;
}

.latex-source-editor .cm-content {
  padding: 1rem 0 3rem;
  caret-color: auto;
}

.latex-source-editor .cm-line {
  padding: 0 1rem;
}

.latex-source-editor .cm-gutters {
  min-width: 3.4rem;
  border-right: 1px solid color-mix(in srgb, var(--font-color) 11%, transparent);
  color: color-mix(in srgb, var(--font-color) 48%, transparent);
  background: var(--card-bg);
}

.latex-source-editor .cm-lineNumbers .cm-gutterElement {
  min-width: 3rem;
  padding: 0 .7rem 0 .35rem;
}

.latex-source-editor .cm-activeLine,
.latex-source-editor .cm-activeLineGutter {
  background: color-mix(in srgb, var(--theme-color) 7%, transparent);
}

.latex-preview-pane {
  overflow: hidden;
}

.latex-preview-loading {
  position: absolute;
  z-index: 1;
  inset: 2.5rem 0 0;
  display: grid;
  place-items: center;
  color: var(--font-color);
  background: var(--card-bg);
  transition: opacity .16s ease, visibility .16s ease;
}

.latex-workbench[data-ready="true"] .latex-preview-loading {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.latex-preview-document {
  box-sizing: border-box;
  width: 100%;
  min-height: 0;
  flex: 1;
  padding: 2.2rem clamp(1.4rem, 5vw, 3.6rem) 4rem;
  overflow: auto;
  color: var(--font-color);
  font-family: "Noto Serif SC", "Songti SC", "Times New Roman", serif;
  line-height: 1.85;
}
.latex-preview-block {
  box-sizing: border-box;
  width: min(100%, 52rem);
  margin-inline: auto;
  scroll-margin-top: 3.5rem;
}

.latex-preview-block > :first-child {
  margin-top: 0;
}

.latex-preview-block > :last-child {
  margin-bottom: 0;
}

.latex-preview-document p {
  margin: .7rem 0;
}

.latex-preview-document h1,
.latex-preview-document h2,
.latex-preview-document h3,
.latex-preview-document h4,
.latex-preview-document h5,
.latex-preview-document h6 {
  color: var(--text-highlight-color);
  font-family: inherit;
  line-height: 1.35;
}

.latex-preview-document h2 {
  margin: 1.9rem 0 .75rem;
  padding-bottom: .38rem;
  border-bottom: 1px solid color-mix(in srgb, var(--theme-color) 46%, transparent);
  font-size: 1.55rem;
}

.latex-preview-document h3 {
  margin: 1.45rem 0 .55rem;
  font-size: 1.22rem;
}

.latex-preview-document ul,
.latex-preview-document ol {
  margin: .8rem 0 1rem;
  padding-inline-start: 1.65rem;
}
.latex-preview-document li { margin: .35rem 0; }
.latex-preview-document ul > li::marker { color: var(--theme-color); font-size: 1.05em; }
.latex-preview-document ol > li::marker { color: var(--theme-color); font-weight: 700; }
.latex-preview-document h2::before,
.latex-preview-document h3::before {
  display: inline-block;
  width: 1.15em;
  margin-inline-end: .22em;
  color: var(--theme-color);
  content: '✣';
  font-size: .72em;
  animation: latex-heading-pinwheel 5s linear infinite;
}
@keyframes latex-heading-pinwheel { to { transform: rotate(360deg); } }

.latex-title-block {
  margin: 1rem 0 2.6rem;
  text-align: center;
}

.latex-title-block h1 {
  margin: 0 0 .65rem;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

.latex-title-block p {
  opacity: .72;
}

.latex-preview-document a,
.latex-reference {
  color: var(--theme-color);
}

.latex-preview-document blockquote {
  margin: 1rem 0;
  padding: .2rem 0 .2rem 1rem;
  border-left: 3px solid var(--theme-color);
}

.latex-preview-document code {
  padding: .08rem .28rem;
  border-radius: 3px;
  background: color-mix(in srgb, var(--font-color) 8%, transparent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.latex-preview-document table {
  width: 100%;
  margin: 1rem 0;
  border-collapse: collapse;
  background: color-mix(in srgb, var(--card-bg) 92%, transparent);
}

.latex-preview-document th,
.latex-preview-document td {
  padding: .38rem .55rem;
  border: 1px solid color-mix(in srgb, var(--font-color) 20%, transparent);
  vertical-align: top;
}

.latex-preview-document th {
  color: var(--text-highlight-color);
  background: color-mix(in srgb, var(--theme-color) 10%, var(--card-bg));
  font-weight: 700;
}

.latex-table-wrap {
  width: 100%;
  margin: 1rem 0;
  overflow: visible;
  border: 1px solid color-mix(in srgb, var(--theme-color) 20%, transparent);
  border-radius: 10px;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--theme-color) 9%, transparent);
}

.latex-table-wrap > .table-wrap {
  width: 100%;
  margin: 0;
  overflow-x: auto;
  overflow-y: hidden;
  border-radius: inherit;
}

/* Recovered LaTeX table fragments retain the theme's nested table wrapper.
   The outer wrapper owns overflow; the nested wrapper must not reserve its
   legacy bottom margin or render a second scrollbar track. */
.latex-table-wrap > .table-wrap > .table-wrap {
  margin: 0;
  overflow: visible;
}

.latex-table-wrap table {
  width: max-content;
  min-width: 100%;
  margin: 0;
}

.latex-table-booktabs th,
.latex-table-booktabs td {
  border-inline: 0;
}

.latex-table-booktabs tr:first-child th {
  border-top: 2px solid color-mix(in srgb, var(--theme-color) 62%, var(--font-color));
  border-bottom: 1px solid color-mix(in srgb, var(--theme-color) 46%, transparent);
}

.latex-table-booktabs tr:last-child td {
  border-bottom: 2px solid color-mix(in srgb, var(--theme-color) 62%, var(--font-color));
}

.latex-environment {
  margin: 1rem 0;
}

.latex-theorem,
.latex-lemma,
.latex-proposition,
.latex-corollary,
.latex-definition,
.latex-proof {
  padding: .75rem 1rem;
  border-left: 3px solid color-mix(in srgb, var(--theme-color) 70%, transparent);
  background: color-mix(in srgb, var(--theme-color) 5%, transparent);
}

.latex-math-display {
  max-width: 100%;
  margin: 1.15rem 0;
  overflow-x: auto;
  overflow-y: hidden;
  text-align: center;
}


.latex-unknown-command {
  color: color-mix(in srgb, var(--font-color) 58%, transparent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.latex-command-fallback {
  display: inline;
}

.latex-command-fallback:empty::after {
  content: '';
}

.latex-roman {
  font-family: "Noto Serif SC", "Songti SC", "Times New Roman", serif;
}

.latex-sans {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.latex-size-tiny { font-size: .68em; }
.latex-size-scriptsize { font-size: .78em; }
.latex-size-footnotesize { font-size: .86em; }
.latex-size-small { font-size: .92em; }
.latex-size-normalsize { font-size: 1em; }
.latex-size-large { font-size: 1.16em; }
.latex-size-large-1 { font-size: 1.34em; }
.latex-size-large-2 { font-size: 1.56em; }
.latex-size-huge { font-size: 1.4em; }
.latex-size-huge-1 { font-size: 1.76em; }

.latex-fbox,
.latex-framebox {
  display: inline-block;
  padding: .06em .35em;
  border: 1px solid color-mix(in srgb, var(--theme-color) 64%, var(--font-color));
  border-radius: 4px;
}

.latex-colorbox {
  padding: .06em .3em;
  border-radius: 4px;
  color: #1f2937;
}

.latex-code-block {
  margin: 1rem 0;
  padding: 1rem 1.15rem;
  overflow: auto;
  border: 1px solid color-mix(in srgb, var(--theme-color) 36%, transparent);
  border-radius: 10px;
  background: color-mix(in srgb, var(--theme-color) 7%, var(--card-bg));
  box-shadow: inset 0 1px 0 color-mix(in srgb, white 42%, transparent), 0 8px 20px color-mix(in srgb, var(--theme-color) 8%, transparent);
  color: var(--font-color);
  line-height: 1.65;
}

.latex-code-block code {
  display: block;
  padding: 0;
  background: transparent;
  white-space: pre;
}

.latex-details {
  margin: 1rem 0;
  overflow: clip;
  border: 1px solid color-mix(in srgb, var(--theme-color) 34%, transparent);
  border-radius: 10px;
  background: color-mix(in srgb, var(--theme-color) 5%, var(--card-bg));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--theme-color) 8%, transparent);
}

.latex-details > summary {
  padding: .72rem 1rem;
  cursor: pointer;
  color: var(--text-highlight-color);
  font-weight: 700;
  list-style: none;
}

.latex-details > summary::-webkit-details-marker {
  display: none;
}

.latex-details > summary::before {
  display: inline-block;
  width: 1rem;
  margin-right: .35rem;
  color: var(--theme-color);
  content: '›';
  transform: rotate(0deg);
  transition: transform .16s ease;
}

.latex-details[open] > summary {
  border-bottom: 1px solid color-mix(in srgb, var(--theme-color) 24%, transparent);
  background: color-mix(in srgb, var(--theme-color) 8%, transparent);
}

.latex-details[open] > summary::before {
  transform: rotate(90deg);
}

.latex-details-body {
  padding: .15rem 1rem .9rem;
}

.latex-description-list {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: .3rem .8rem;
  margin: 1rem 0;
}

.latex-description-list dt {
  color: var(--text-highlight-color);
  font-weight: 700;
}

.latex-description-list dd {
  margin: 0;
}

.latex-pagebreak,
.latex-rule {
  height: 0;
  margin: 1.8rem 0;
  border: 0;
  border-top: 1px dashed color-mix(in srgb, var(--theme-color) 52%, transparent);
}

.latex-pagebreak::after {
  display: block;
  width: max-content;
  margin: -.8rem auto 0;
  padding: 0 .55rem;
  background: var(--card-bg);
  color: color-mix(in srgb, var(--font-color) 54%, transparent);
  content: '分页';
  font-size: .78rem;
}

.latex-placeholder,
.latex-image-placeholder {
  color: color-mix(in srgb, var(--font-color) 60%, transparent);
}

.latex-preview-block-error {
  color: #c62828;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .82rem;
}

.latex-preview-block-error pre {
  overflow: auto;
  white-space: pre-wrap;
}

.latex-preview-empty {
  opacity: .65;
  text-align: center;
}

.latex-pdf-stage {
  position: fixed;
  z-index: -1000;
  top: 0;
  left: -100000px;
  box-sizing: border-box;
  width: 794px;
  min-height: 1123px;
  overflow: visible;
  background: var(--card-bg);
}

.latex-pdf-stage .latex-preview-document {
  box-sizing: border-box;
  width: 794px;
  min-height: 1123px;
  height: auto;
  padding: 72px 68px 86px;
  overflow: visible;
  background: var(--card-bg);
}

.latex-pdf-stage.is-plain,
.latex-pdf-stage.is-plain .latex-preview-document {
  color: #222;
  background: #fff;
}

.latex-pdf-stage.is-plain .latex-preview-document {
  font-family: "Times New Roman", "Songti SC", serif;
}

.latex-pdf-stage.is-plain .latex-preview-document h1,
.latex-pdf-stage.is-plain .latex-preview-document h2,
.latex-pdf-stage.is-plain .latex-preview-document h3,
.latex-pdf-stage.is-plain .latex-preview-document h4,
.latex-pdf-stage.is-plain .latex-preview-document h5,
.latex-pdf-stage.is-plain .latex-preview-document h6 {
  color: #111;
}

.latex-pdf-stage.is-plain .latex-preview-document h2 {
  border-bottom-color: #bbb;
}

.latex-pdf-stage.is-plain .latex-theorem,
.latex-pdf-stage.is-plain .latex-lemma,
.latex-pdf-stage.is-plain .latex-proposition,
.latex-pdf-stage.is-plain .latex-corollary,
.latex-pdf-stage.is-plain .latex-definition,
.latex-pdf-stage.is-plain .latex-proof {
  border-left-color: #777;
  background: #f7f7f7;
}

.latex-pdf-stage.is-plain .latex-table-wrap,
.latex-pdf-stage.is-plain .latex-details,
.latex-pdf-stage.is-plain .latex-code-block {
  border-color: #b8b8b8;
  background: #fafafa;
  box-shadow: none;
}

.latex-pdf-stage.is-plain .latex-preview-document th,
.latex-pdf-stage.is-plain .latex-details[open] > summary {
  color: #111;
  background: #f1f1f1;
}

.latex-pdf-stage.is-plain .latex-details > summary::before {
  color: #555;
}

@media screen and (max-width: 800px) {
  .latex-editor-actions span {
    width: 100%;
    margin-left: 0;
  }

  .latex-workbench {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 0;
  }

  .latex-resize-handle {
    display: none;
  }

  .latex-source-pane,
  .latex-preview-pane {
    min-height: 34rem;
  }

  .latex-source-pane {
    border-right: 0;
    border-bottom: 1px solid color-mix(in srgb, var(--font-color) 15%, transparent);
    box-shadow: 0 7px 18px rgba(26, 35, 52, .09);
  }
}

@media screen and (max-width: 1120px) {
  .latex-reference-panel {
    right: .75rem;
    height: min(700px, calc(100vh - 5rem));
  }
}

@media screen and (max-width: 620px) {
  .latex-reference-panel {
    top: 4.25rem;
    right: .5rem;
    bottom: .5rem;
    width: min(var(--latex-reference-width), calc(100vw - 2.5rem));
    height: auto;
    min-height: 0;
  }

  .latex-editor-actions .latex-export-controls {
    width: 100%;
    margin-left: 0;
    padding: .55rem 0 0;
    border-top: 1px solid color-mix(in srgb, var(--font-color) 12%, transparent);
    border-left: 0;
  }

  .latex-editor-actions #latex-status {
    width: 100%;
    margin-left: 0;
  }
}

.converter-modes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: .6rem;
  margin: 1rem 0 1.2rem;
}

.converter-mode {
  position: relative;
  display: grid !important;
  min-height: 4rem;
  margin: 0 !important;
  padding: .7rem .85rem;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--font-color) 13%, transparent);
  border-radius: 8px;
  color: var(--font-color);
  background: color-mix(in srgb, var(--card-bg) 94%, transparent);
  cursor: pointer;
  text-align: center;
  transition: border-color .16s ease, box-shadow .16s ease, color .16s ease;
}

.converter-mode:hover,
.converter-mode:focus-within,
.converter-mode[data-active="true"] {
  border-color: var(--theme-color);
  color: var(--theme-color);
  box-shadow: 0 5px 14px color-mix(in srgb, var(--font-color) 10%, transparent);
}

.converter-mode input {
  position: absolute;
  width: 1px;
  height: 1px;
  clip-path: inset(50%);
}

.converter-mode span {
  font-size: .88rem;
  font-weight: 650;
}

.converter-dropzone {
  display: grid !important;
  min-height: 6rem;
  margin: .9rem 0 0 !important;
  place-items: center;
  cursor: pointer;
}

.converter-files {
  display: grid;
  gap: .45rem;
  margin: .75rem 0 0;
  padding: 0;
  list-style: none;
}

.converter-file {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) auto auto;
  align-items: center;
  gap: .65rem;
  min-height: 2.8rem;
  padding: .4rem .55rem;
  border-bottom: 1px solid color-mix(in srgb, var(--font-color) 10%, transparent);
}

.converter-file-order,
.converter-file-size {
  color: var(--font-color);
  font-size: .76rem;
  opacity: .65;
}

.converter-file-order {
  text-align: center;
}

.converter-file-name {
  overflow: hidden;
  color: var(--text-highlight-color);
  font-size: .84rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.converter-file-actions {
  display: flex;
  gap: .25rem;
}

.converter-file-actions button {
  padding: .2rem .4rem;
  border: 0;
  color: var(--font-color);
  background: transparent;
  cursor: pointer;
  font-size: .72rem;
  opacity: .72;
}

.converter-file-actions button:hover:not(:disabled),
.converter-file-actions button:focus-visible {
  color: var(--theme-color);
  opacity: 1;
}

.converter-file-actions button:disabled {
  cursor: default;
  opacity: .22;
}

.converter-options {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 1rem;
  min-height: 2.5rem;
  margin-top: .75rem;
}

.converter-options[hidden],
.converter-options [hidden] {
  display: none !important;
}

.converter-options > div {
  display: flex;
  align-items: center;
  gap: .5rem;
}

.converter-options label {
  margin: 0;
}

.converter-options select {
  min-height: 2.1rem;
  padding: .35rem .55rem;
  border: 1px solid var(--text-bg-hover);
  border-radius: 6px;
  color: var(--font-color);
  background: var(--global-bg);
  font: inherit;
}

.converter-check {
  display: inline-flex !important;
  align-items: center;
  gap: .45rem;
  min-height: 2.1rem;
  margin: 0 !important;
}

.converter-preview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: .75rem;
  max-height: 36rem;
  margin-top: 1rem;
  padding: .75rem;
  overflow: auto;
  border: 1px solid color-mix(in srgb, var(--font-color) 12%, transparent);
  border-radius: 8px;
  background: color-mix(in srgb, var(--global-bg) 80%, var(--card-bg));
  box-shadow: inset 0 5px 14px color-mix(in srgb, var(--font-color) 7%, transparent);
}

.converter-preview[hidden] {
  display: none;
}

.converter-preview figure {
  margin: 0;
  padding: .45rem;
  border-radius: 5px;
  background: #fff;
}

.converter-preview img {
  display: block;
  width: 100%;
  height: auto;
}

.converter-preview figcaption {
  margin-top: .35rem;
  color: #555;
  font-size: .72rem;
  text-align: center;
}

.converter-preview iframe {
  grid-column: 1 / -1;
  width: 100%;
  min-height: 32rem;
  border: 0;
  border-radius: 5px;
  background: #fff;
}

.converter-render-target {
  position: fixed;
  z-index: -1;
  top: 0;
  left: -100000px;
  box-sizing: border-box;
  width: 794px;
  min-height: 1123px;
  padding: 48px 56px;
  overflow: visible;
  color: #222;
  background: #fff;
  font: 16px/1.65 Arial, "Microsoft YaHei", sans-serif;
}

.converter-render-target img {
  max-width: 100%;
  height: auto;
}

.converter-render-target table {
  width: 100%;
  border-collapse: collapse;
}

.converter-render-target td,
.converter-render-target th {
  padding: 5px 7px;
  border: 1px solid #bbb;
}

@media screen and (max-width: 600px) {
  .converter-modes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .converter-file {
    grid-template-columns: 1.6rem minmax(0, 1fr) auto;
  }

  .converter-file-size {
    display: none;
  }

  .converter-file-actions {
    grid-column: 2 / -1;
    justify-content: flex-end;
  }
}

.codec-toolbar {
  display: flex;
  align-items: center;
  gap: .65rem;
  margin-bottom: .8rem;
}

.codec-toolbar label,
.codec-toolbar select {
  margin: 0;
}

.codec-toolbar select,
.image-tool-options select,
.image-tool-options input[type="number"] {
  min-height: 2.1rem;
  padding: .35rem .55rem;
  border: 1px solid var(--text-bg-hover);
  border-radius: 6px;
  color: var(--font-color);
  background: var(--global-bg);
  font: inherit;
}

.markdown-editor-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin: 1rem 0 .8rem;
}

.markdown-editor-actions button {
  padding: .45rem .7rem;
  border: 1px solid var(--text-bg-hover);
  border-radius: 6px;
  color: var(--font-color);
  background: var(--card-bg);
  cursor: pointer;
}

.markdown-editor-actions button:hover,
.markdown-editor-actions button:focus-visible {
  border-color: var(--theme-color);
  color: var(--theme-color);
}

.markdown-editor-actions span {
  margin-left: auto;
  color: var(--font-color);
  font-size: .78rem;
  opacity: .75;
}

.markdown-editor-actions span[data-error="true"] {
  color: #c62828;
}

.markdown-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: .75rem;
  height: var(--markdown-workbench-height, min(68vh, 760px));
  min-height: 0;
  padding: .75rem;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--font-color) 12%, transparent);
  border-radius: 10px;
  background: var(--card-bg);
  box-shadow:
    0 18px 42px rgba(26, 35, 52, .22),
    0 6px 16px rgba(26, 35, 52, .14),
    inset 0 1px 0 color-mix(in srgb, white 58%, transparent),
    inset 0 -10px 18px rgba(26, 35, 52, .06);
}

.markdown-source-pane {
  display: flex;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--font-color) 12%, transparent);
  border-radius: 7px;
  background: var(--card-bg);
  box-shadow:
    0 7px 18px rgba(26, 35, 52, .12),
    inset 0 1px 0 color-mix(in srgb, white 45%, transparent),
    inset 0 -6px 12px rgba(26, 35, 52, .04);
}

.markdown-pane-label {
  padding: .55rem .8rem;
  border-bottom: 1px solid color-mix(in srgb, var(--font-color) 10%, transparent);
  color: var(--font-color);
  background: var(--card-bg);
  box-shadow: 0 5px 12px rgba(26, 35, 52, .08);
  font-size: .78rem;
  font-weight: 650;
  letter-spacing: .03em;
  opacity: .82;
}

.markdown-source-editor {
  min-height: 0;
  flex: 1;
  overflow: hidden;
  background: var(--card-bg);
}

.markdown-source-editor .cm-editor {
  height: 100%;
  color: var(--font-color);
  background: var(--card-bg);
  font: .92rem/1.72 ui-monospace, SFMono-Regular, Consolas, monospace;
}

.markdown-source-editor .cm-editor.cm-focused {
  outline: 0;
}

.markdown-source-editor .cm-scroller {
  overflow-x: auto;
  overflow-y: hidden;
  font-family: inherit;
}

.markdown-workbench[data-overflow="source"] .markdown-source-editor .cm-scroller {
  overflow-y: auto;
}

.markdown-source-editor .cm-content {
  padding: .9rem 0;
  caret-color: auto;
}

.markdown-source-editor .cm-line {
  padding: 0 .9rem;
}

.markdown-source-editor .cm-line,
.markdown-source-editor .cm-line * {
  text-decoration: none !important;
}

.markdown-source-editor .cm-gutters {
  min-width: 4.5rem;
  border-right: 1px solid var(--text-bg-hover);
  color: color-mix(in srgb, var(--font-color) 50%, transparent);
  background: var(--card-bg);
}

.markdown-source-editor .cm-lineNumbers .cm-gutterElement {
  min-width: 2.7rem;
  padding: 0 .55rem 0 .35rem;
}

.markdown-source-editor .cm-headingFoldGutter .cm-gutterElement {
  width: 1.35rem;
  padding: 0;
  color: var(--theme-color);
  cursor: pointer;
  text-align: center;
}

.markdown-source-editor .markdown-fold-marker {
  display: inline-grid;
  width: 1.2rem;
  height: 1.72em;
  padding: 0;
  place-items: center;
}

.markdown-source-editor .markdown-fold-marker svg {
  width: .72rem;
  height: .72rem;
  overflow: visible;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.65;
}

.markdown-source-editor .cm-folded-heading {
  box-sizing: border-box;
  height: 1.72em !important;
  min-height: 1.72em !important;
  max-height: 1.72em !important;
  overflow: hidden;
  color: var(--theme-color) !important;
  background: color-mix(in srgb, var(--theme-color) 14%, transparent);
  font-weight: 650;
  line-height: 1.72 !important;
  white-space: nowrap;
}

.markdown-source-editor .cm-folded-heading * {
  color: inherit !important;
}

.markdown-source-editor .markdown-fold-placeholder {
  display: none;
}

.markdown-source-editor .markdown-fold-ellipsis {
  display: inline-grid;
  width: 1.25rem;
  height: .78rem;
  margin-left: .2rem;
  border: 1px solid color-mix(in srgb, var(--font-color) 16%, transparent);
  border-radius: 999px;
  place-items: center;
  color: color-mix(in srgb, var(--font-color) 60%, transparent);
  background: color-mix(in srgb, var(--font-color) 9%, transparent);
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
  vertical-align: -.08em;
}

.markdown-source-editor .markdown-fold-ellipsis svg {
  width: .78rem;
  height: .38rem;
  fill: currentColor;
}

.markdown-source-editor .markdown-fold-ellipsis:hover {
  border-color: color-mix(in srgb, var(--theme-color) 42%, transparent);
  color: var(--theme-color);
  background: color-mix(in srgb, var(--theme-color) 13%, transparent);
}

.markdown-source-editor .cm-activeLine,
.markdown-source-editor .cm-activeLineGutter {
  background: transparent;
}

.markdown-preview-pane {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--font-color) 12%, transparent);
  border-radius: 7px;
  background: var(--card-bg);
  box-shadow:
    0 7px 18px rgba(26, 35, 52, .12),
    inset 0 1px 0 color-mix(in srgb, white 45%, transparent),
    inset 0 -6px 12px rgba(26, 35, 52, .04);
}

#markdown-preview {
  box-sizing: border-box;
  width: 100%;
  min-height: 0;
  flex: 1;
  padding: 1.25rem 1.45rem;
  overflow-x: auto;
  overflow-y: hidden;
  background: var(--card-bg);
}

.markdown-workbench[data-overflow="preview"] #markdown-preview {
  overflow-y: auto;
}

.markdown-preview-loading {
  position: absolute;
  z-index: 1;
  inset: 2.45rem 0 0;
  display: grid;
  place-items: center;
  color: var(--font-color);
  background: var(--card-bg);
  transition: opacity .2s ease, visibility .2s ease;
}

.markdown-workbench[data-ready="true"] .markdown-preview-loading {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

#markdown-preview.vditor-reset {
  color: var(--font-color) !important;
  background: var(--card-bg) !important;
}

#markdown-preview.vditor-reset h1,
#markdown-preview.vditor-reset h2,
#markdown-preview.vditor-reset h3 {
  color: var(--text-highlight-color);
  border-color: var(--text-bg-hover);
}

#markdown-preview.vditor-reset a {
  color: var(--theme-color);
}

#markdown-preview.vditor-reset blockquote {
  border-left-color: var(--theme-color);
  background: color-mix(in srgb, var(--theme-color) 8%, transparent);
}

#markdown-preview.vditor-reset code,
#markdown-preview.vditor-reset pre {
  background: color-mix(in srgb, var(--font-color) 8%, var(--card-bg));
}

.image-tool-options {
  display: grid;
  grid-template-columns: auto minmax(10rem, 1fr) auto minmax(8rem, 12rem) auto minmax(6rem, 8rem);
  align-items: center;
  gap: .45rem .7rem;
  margin: 1rem 0;
}

.image-tool-options label {
  margin: 0;
}

.image-tool-options input[type="range"] {
  width: 100%;
  accent-color: var(--theme-color);
}

.image-tool-preview {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.image-tool-preview figure {
  min-width: 0;
  margin: 0;
  padding: .65rem;
  border: 1px solid var(--text-bg-hover);
  border-radius: 7px;
  background: var(--global-bg);
}

.image-tool-preview img {
  display: block;
  width: 100%;
  max-height: 26rem;
  object-fit: contain;
}

.image-tool-preview figcaption {
  margin-top: .55rem;
  color: var(--font-color);
  font-size: .78rem;
  opacity: .75;
  text-align: center;
}

.workspace progress {
  width: 100%;
}

.tool-empty {
  padding: 1.5rem 0;
  text-align: center;
}

.runtime-lab {
  width: min(100%, 980px);
  margin: 0 auto;
}

.runtime-lab > h1 {
  margin: .2rem 0 .55rem;
  color: var(--text-highlight-color);
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -.04em;
}

.runtime-lab .lede,
.runtime-lab .muted {
  color: var(--font-color);
  opacity: .78;
}

.runtime-lab .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.runtime-lab .card {
  padding: 1rem;
  border: 1px solid var(--text-bg-hover);
  border-radius: 10px;
  background: var(--card-bg);
}

.runtime-lab .card h2 {
  margin-top: 0;
  color: var(--text-highlight-color);
  font-size: 1.15rem;
}

.runtime-lab label {
  display: block;
  margin: .65rem 0 .25rem;
  color: var(--font-color);
  font-weight: 650;
}

.runtime-lab textarea {
  box-sizing: border-box;
  width: 100%;
  min-height: 9rem;
  padding: .7rem;
  resize: vertical;
  border: 1px solid var(--text-bg-hover);
  border-radius: 7px;
  outline: 0;
  color: var(--font-color);
  background: var(--global-bg);
  font: .92rem ui-monospace, SFMono-Regular, Consolas, monospace;
}

.runtime-lab textarea:focus {
  border-color: var(--theme-color);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--theme-color) 20%, transparent);
}

.runtime-lab button {
  padding: .45rem .75rem;
  border: 1px solid var(--text-bg-hover);
  border-radius: 6px;
  color: var(--font-color);
  background: var(--card-bg);
  cursor: pointer;
}

.runtime-lab button + button {
  margin-left: .4rem;
}

.runtime-lab button:hover:not(:disabled) {
  border-color: var(--theme-color);
  color: var(--theme-color);
}

.runtime-lab button:disabled {
  cursor: not-allowed;
  opacity: .55;
}

.runtime-lab .dropzone {
  padding: .85rem;
  border: 1px dashed var(--text-bg-hover);
  border-radius: 7px;
  color: var(--font-color);
  text-align: center;
}

.runtime-lab .dropzone[data-active="true"] {
  border-color: var(--theme-color);
  background: color-mix(in srgb, var(--theme-color) 12%, transparent);
}

.runtime-lab progress {
  width: 100%;
  height: .7rem;
}

.runtime-lab .status {
  min-height: 1.6rem;
  margin: .75rem 0;
}

.runtime-lab .error {
  color: #c62828;
}

.runtime-lab .capabilities {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: .4rem;
  padding: 0;
  list-style: none;
}

.runtime-lab .capabilities li {
  padding: .4rem .55rem;
  border-radius: 5px;
  background: color-mix(in srgb, var(--font-color) 8%, transparent);
}

.runtime-lab .ok::before {
  content: '✓ ';
  color: #2e7d32;
}

.runtime-lab .no::before {
  content: '— ';
  color: #9e9e9e;
}

.runtime-lab .queue {
  min-height: 5rem;
  padding: .5rem 1.2rem;
  border-radius: 6px;
  background: color-mix(in srgb, var(--font-color) 7%, transparent);
}

@media (max-width: 640px) {
  .workspace button,
  .workspace select,
  .workspace input:not([type="file"]):not([type="range"]):not([type="checkbox"]):not([type="radio"]) {
    min-height: 42px;
  }

  #content-inner.layout:has(.tool-home) {
    padding-inline: .65rem;
  }

  #content-inner.layout:has(.tool-home) #page {
    padding: 1rem .85rem;
    border-radius: 14px;
  }

  .tool-home-intro {
    padding: 0 0 1rem;
  }

  .tool-search {
    gap: .4rem;
    margin-top: .25rem;
    padding: .45rem .45rem .45rem .7rem;
    border-radius: 12px;
  }

  .tool-search button {
    padding-inline: .7rem;
  }

  .tool-list-section {
    margin-top: .5rem;
  }

  .tool-list {
    grid-template-columns: minmax(0, 1fr);
    gap: .7rem;
  }

  .tool-item {
    align-items: flex-start;
    min-height: 0;
    padding: .85rem .75rem;
  }

  .tool-item-link {
    align-items: flex-start;
  }

  .tool-item-desc {
    display: -webkit-box;
    overflow: hidden;
    white-space: normal;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .workspace-page,
  .latex-editor-page {
    width: 100%;
  }

  .workspace {
    margin-top: 1rem;
    padding: .85rem;
  }

  .workspace-heading h1 {
    font-size: clamp(1.65rem, 9vw, 2.25rem);
  }

  .latex-editor-actions,
  .markdown-editor-actions,
  .image-tool-actions,
  .codec-actions,
  .converter-actions {
    gap: .45rem;
  }

  .latex-editor-actions button,
  .markdown-editor-actions button,
  .image-tool-actions button,
  .codec-actions button,
  .converter-actions button {
    min-height: 42px;
  }

  .markdown-editor-actions span {
    width: 100%;
    margin-left: 0;
  }

  .markdown-workbench {
    grid-template-columns: 1fr;
    height: auto;
  }

  .markdown-source-pane,
  .markdown-preview-pane {
    min-height: min(68vh, 34rem);
  }

  .image-tool-options {
    grid-template-columns: 1fr;
  }

  .image-tool-options input[type="range"] {
    grid-column: auto;
  }

  .image-tool-preview {
    grid-template-columns: 1fr;
  }

  .codec-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .codec-toolbar select {
    width: 100%;
  }

  .converter-modes {
    grid-template-columns: minmax(0, 1fr);
  }
}