:root {
  font-family: system-ui, sans-serif;
  color: var(--color-text);
  background: var(--color-background);
  line-height: 1.6;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0 auto;
  max-width: 1280px;
  padding: 0 32px;
}
a {
  color: var(--color-link);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}
a:visited {
  color: var(--color-link-visited);
}
a:hover {
  color: var(--color-link-hover);
  text-decoration-thickness: 2px;
}
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}
[hidden] {
  display: none !important;
}
.skip-link {
  position: absolute;
  top: -100px;
  padding: 12px;
  background: var(--color-background);
  z-index: 5;
}
.skip-link:focus {
  top: 8px;
}
.site-header {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 32px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}
.brand,
.brand:visited {
  font:
    bold 30px/1.2 Georgia,
    serif;
  color: var(--color-text);
  text-decoration: none;
}
.brand-subtitle {
  display: block;
  margin-top: 3px;
  color: var(--color-muted);
  font:
    14px/1.4 system-ui,
    sans-serif;
}
.revision-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin-bottom: 12px;
}
.revision-meta p {
  margin: 0;
}
.edit-article {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.article-layout article {
  font-family: Georgia, serif;
  font-size: 18px;
  line-height: 1.55;
}
.article-layout article table {
  font-family: system-ui, sans-serif;
  font-size: 15px;
}
.desktop-toc + .article-side-links {
  border-top: 1px solid var(--color-border);
  margin-top: 26px;
  padding-top: 24px;
}
.entry .eyebrow {
  margin-bottom: 6px;
}
.site-nav,
.tabs,
.actions,
.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
}
.site-nav a,
.site-nav a:visited,
.tabs a,
.tabs a:visited,
.tabs button {
  color: var(--color-text);
  text-decoration: none;
  background: none;
  border: 0;
  border-radius: 0;
  padding: 10px 4px;
  min-height: 44px;
}
.site-nav a[aria-current],
.tabs [aria-current],
.tabs [aria-selected="true"] {
  box-shadow: inset 0 -2px var(--color-text);
  font-weight: 650;
}
.site-nav a:hover,
.tabs a:hover,
.tabs button:hover {
  text-decoration: underline;
}
.header-search {
  display: flex;
  gap: 8px;
  max-width: 310px;
}
.header-search input {
  width: 180px;
}
.header-search button {
  background: var(--color-background);
  color: var(--color-text);
}
.mobile-search {
  display: none;
}
main {
  padding: 24px 0 20px;
  min-height: 65vh;
}
h1,
h2,
h3 {
  font-family: Georgia, serif;
  line-height: 1.2;
  letter-spacing: -0.025em;
}
h1 {
  font-size: clamp(32px, 3.4vw, 48px);
  margin: 0 0 8px;
  font-weight: 600;
}
h2 {
  font-size: 29px;
  margin: 28px 0 14px;
}
h3 {
  font-size: 23px;
  margin: 20px 0 10px;
}
p {
  margin: 0 0 16px;
}
.lede {
  color: var(--color-muted);
  font-size: 19px;
  margin-bottom: 16px;
}
.eyebrow,
.meta,
.muted {
  color: var(--color-muted);
}
.eyebrow {
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.meta {
  font-size: 14px;
  overflow-wrap: anywhere;
}
.breadcrumb {
  margin-bottom: 12px;
  font-size: 14px;
}
.layout {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(250px, 3fr);
  gap: 36px;
}
.layout > *,
.editor-panes > * {
  min-width: 0;
}
.sidebar {
  border-left: 1px solid var(--color-border);
  padding-left: 32px;
}
.sidebar h2:first-child {
  margin-top: 0;
}
.sidebar section + section {
  border-top: 1px solid var(--color-border);
  margin-top: 26px;
  padding-top: 24px;
}
.sidebar h2 {
  font-size: 25px;
}
.link-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.link-list li {
  margin: 0 0 9px;
}
.link-list a {
  display: inline-block;
  padding: 3px 0;
}
.tabs {
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 12px;
}
.entry {
  border-bottom: 1px solid var(--color-border);
  padding: 22px 0;
}
.entry:first-child {
  padding-top: 0;
}
.entry h2,
.entry h3 {
  margin: 4px 0 8px;
}
.entry p:last-child {
  margin-bottom: 0;
}
.entry .actions {
  font-size: 15px;
}
.empty {
  padding: 24px 0;
  color: var(--color-muted);
}
.notice {
  padding: 14px 18px;
  margin: 12px 0;
  background: var(--color-accent-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}
.notice p:last-child {
  margin-bottom: 0;
}
.warning {
  background: var(--color-warning-background);
}
article {
  margin: 24px 0;
  overflow-wrap: anywhere;
}
article > :first-child {
  margin-top: 0;
}
article h2,
article h3,
[id] {
  scroll-margin-top: 24px;
}
article p,
article li {
  max-width: 78ch;
}
article img {
  max-width: 100%;
  height: auto;
}
pre {
  overflow: auto;
  padding: 16px;
  background: var(--color-surface);
  font-size: 14px;
}
code {
  overflow-wrap: anywhere;
}
blockquote {
  border-left: 3px solid var(--color-input-border);
  padding-left: 18px;
  margin: 20px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th,
td {
  border: 1px solid var(--color-border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
th {
  background: var(--color-surface);
  font-weight: 650;
}
.table-scroll {
  overflow-x: auto;
  max-width: 100%;
  margin: 20px 0;
}
input,
select,
textarea,
button,
.button {
  font: inherit;
  border: 1px solid var(--color-input-border);
  border-radius: 4px;
  padding: 9px 12px;
  background: var(--color-background);
  color: var(--color-text);
  max-width: 100%;
  min-height: 44px;
}
input,
select,
textarea {
  min-width: 0;
}
button,
.button {
  cursor: pointer;
  background: var(--color-action);
  border-color: var(--color-action);
  color: var(--color-action-text);
  text-align: center;
  text-decoration: none;
}
button:hover,
.button:hover {
  background: var(--color-link-hover);
  color: var(--color-action-text);
}
button:disabled {
  opacity: 0.6;
  cursor: wait;
}
button.secondary,
.button.secondary {
  background: var(--color-background);
  color: var(--color-text);
  border-color: var(--color-input-border);
}
label {
  display: block;
  font-size: 15px;
}
label > input,
label > select,
label > textarea {
  display: block;
  width: 100%;
  margin-top: 5px;
}
input[type="checkbox"] {
  min-height: auto;
  width: auto;
  display: inline;
}
.search-form {
  display: flex;
  gap: 10px;
  margin: 20px 0;
}
.search-form input {
  flex: 1;
  width: 100%;
}
.filter-form {
  display: grid;
  gap: 18px;
}
details > summary {
  cursor: pointer;
  min-height: 44px;
  padding: 9px 0;
  font-weight: 600;
}
.sidebar details > summary {
  font:
    25px/1.5 Georgia,
    serif;
}
.filter-layout {
  display: grid;
  grid-template-columns: 235px minmax(0, 1fr);
  gap: 40px;
}
.filter-panel {
  border-right: 1px solid var(--color-border);
  padding-right: 28px;
}
.filter-panel summary {
  font:
    24px/1.5 Georgia,
    serif;
}
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 16px;
  margin: 20px 0;
}
.toolbar label {
  flex: 1;
}
.toolbar button {
  flex: 0 0 auto;
}
.revision-table td:first-child {
  font-size: 20px;
  font-weight: 650;
}
.revision-table .latest {
  background: var(--color-accent-surface);
}
.pagination {
  margin: 26px 0;
}
.pagination a {
  min-height: 44px;
  padding: 9px 0;
}
.diff-heading,
.diff-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
}
.diff-heading {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 12px;
  font-weight: 650;
}
.diff-row {
  margin: 10px 0;
}
.diff-cell {
  padding: 12px;
  min-width: 0;
  background: var(--color-surface);
}
.diff-cell pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 4px 0 0;
  padding: 0;
  background: none;
}
.diff-cell.removed {
  background: var(--color-remove-background);
}
.diff-cell.added {
  background: var(--color-add-background);
}
.diff-label {
  font-size: 14px;
  font-weight: 650;
}
#editor label {
  margin: 16px 0;
}
#editor input,
#editor textarea {
  width: 100%;
}
#editor textarea {
  font:
    15px/1.65 ui-monospace,
    monospace;
  min-height: 440px;
  resize: vertical;
}
.editor-panes {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
}
.editor-panes[data-mode="write"],
.editor-panes[data-mode="preview"] {
  grid-template-columns: minmax(0, 1fr);
}
.editor-panes[data-mode="write"] .preview-pane,
.editor-panes[data-mode="preview"] .write-pane {
  display: none;
}
.preview-pane {
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 20px;
  margin: 16px 0;
}
.preview-pane article {
  margin: 0;
}
.editor-actions {
  margin: 22px 0;
}
.trace-event {
  border-top: 1px solid var(--color-border);
  padding: 20px 0;
  overflow-wrap: anywhere;
}
.trace-event h2 {
  font:
    600 16px/1.6 system-ui,
    sans-serif;
  text-transform: capitalize;
  margin: 0 0 10px;
}
.trace-event summary {
  overflow-wrap: anywhere;
}
.trace-event pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 32rem;
}
.trace-event details {
  margin: 8px 0;
}
.trace-notice {
  border-left: 3px solid var(--color-input-border);
  padding-left: 16px;
}
.trace-details dd {
  margin: 0 0 12px;
  overflow-wrap: anywhere;
}
.trace-details dt {
  font-size: 14px;
  color: var(--color-muted);
}
footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  padding: 24px 0;
  border-top: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-muted);
}
footer label {
  display: flex;
  align-items: center;
  gap: 8px;
}
footer select {
  font-size: 14px;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
@media (max-width: 1000px) {
  body {
    padding: 0 28px;
  }
  .site-header {
    gap: 20px;
  }
  .header-search {
    display: none;
  }
  .mobile-search {
    display: block;
  }
  .layout {
    grid-template-columns: minmax(0, 2.5fr) minmax(200px, 1fr);
    gap: 28px;
  }
  .sidebar {
    padding-left: 24px;
  }
}
@media (max-width: 760px) {
  body {
    padding: 0 20px;
  }
  .site-header {
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding: 20px 0 0;
  }
  .brand {
    font-size: 27px;
  }
  .site-nav {
    grid-row: 2;
    grid-column: 1 / -1;
    gap: 24px;
  }
  .mobile-search {
    grid-row: 1;
    grid-column: 2;
    padding: 10px 0;
    min-height: 44px;
  }
  main {
    padding-top: 16px;
  }
  h1 {
    font-size: 34px;
  }
  h2 {
    font-size: 27px;
  }
  .lede {
    font-size: 17px;
  }
  .layout,
  .filter-layout {
    display: flex;
    flex-direction: column;
    gap: 28px;
  }
  .sidebar,
  .filter-panel {
    border: 0;
    padding: 0;
  }
  .sidebar {
    border-top: 1px solid var(--color-border);
    padding-top: 24px;
  }
  .article-layout .sidebar {
    display: contents;
  }
  .article-toc {
    order: -1;
  }
  .article-layout {
    display: block;
  }
  .article-layout .article-side-links {
    border-top: 1px solid var(--color-border);
    padding-top: 20px;
  }
  .desktop-toc {
    display: none;
  }
  .mobile-toc {
    display: block;
    margin: 6px 0 8px;
  }
  .tabs {
    gap: 12px;
  }
  .tabs a,
  .tabs button {
    padding-left: 4px;
    padding-right: 4px;
  }
  .entry .actions a,
  .link-list a {
    min-height: 44px;
    padding: 9px 0;
  }
  .entry {
    padding: 14px 0;
  }
  .entry > p {
    margin-bottom: 8px;
  }
  .entry .actions {
    gap: 8px 20px;
  }
  .breadcrumb {
    margin-bottom: 10px;
  }
  .lede {
    margin-bottom: 12px;
  }
  .tabs {
    margin-bottom: 4px;
  }
  .revision-meta {
    margin-bottom: 4px;
  }
  .notice {
    padding: 10px;
    margin: 4px 0 8px;
  }
  article {
    margin: 12px 0;
  }
  .article-layout article {
    font-family: system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.6;
  }
  .article-layout article h2 {
    margin-top: 22px;
    margin-bottom: 10px;
  }
  .brand-subtitle {
    font-size: 12px;
  }
  .site-header {
    padding-top: 16px;
    gap: 8px 12px;
  }
  .site-nav {
    justify-content: space-between;
    gap: 16px;
  }

  .toolbar {
    gap: 12px;
  }
  .toolbar button {
    width: 100%;
  }
  .revision-table,
  .revision-table tbody,
  .revision-table tr,
  .revision-table td {
    display: block;
    width: 100%;
  }
  .revision-table thead {
    display: none;
  }
  .revision-table tr {
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
  }
  .revision-table td {
    border: 0;
    padding: 3px 8px;
  }
  .revision-table td::before {
    content: attr(data-label);
    display: block;
    color: var(--color-muted);
    font-size: 14px;
    font-weight: 400;
  }
  .diff-heading {
    display: none;
  }
  .diff-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 16px 0;
  }
  .diff-cell.empty,
  .diff-row.unchanged .diff-cell + .diff-cell {
    display: none;
  }
  .editor-panes {
    grid-template-columns: minmax(0, 1fr);
  }
  .split-control {
    display: none;
  }
  .editor-actions {
    align-items: stretch;
  }
  .editor-actions button,
  .editor-actions .button {
    width: 100%;
  }
  footer {
    align-items: flex-start;
  }
}
@media (min-width: 761px) {
  .edit-article {
    min-height: 28px;
  }
  .mobile-toc {
    display: none;
  }
}
.tabs button[aria-pressed="true"] {
  box-shadow: inset 0 -2px var(--color-text);
  font-weight: 650;
}
@media (max-width: 760px) {
  .search-page .layout > .sidebar {
    order: -1;
    border-top: 0;
    border-bottom: 1px solid var(--color-border);
    padding: 0 0 14px;
  }
}
.diff-prose {
  margin-top: 12px;
  overflow-wrap: anywhere;
}
.diff-prose > :first-child {
  margin-top: 0;
}
.diff-prose > :last-child {
  margin-bottom: 0;
}
@media (max-width: 760px) {
  .record-table,
  .record-table tbody,
  .record-table tr {
    display: block;
    width: 100%;
  }
  .record-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }
  .record-table tbody tr {
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
  }
  .record-table td {
    display: grid;
    grid-template-columns: 95px minmax(0, 1fr);
    gap: 12px;
    border: 0;
    padding: 6px 0;
    font-size: 15px;
  }
  .record-table td::before {
    content: attr(data-label);
    color: var(--color-muted);
    font-size: 13px;
    text-transform: uppercase;
  }
  .table-scroll table:not(.record-table):not(.revision-table) {
    min-width: 560px;
  }
  .toolbar label {
    flex-basis: 100%;
  }
  #editor textarea {
    min-height: 360px;
    height: 55vh;
  }
}

/* Captured media and the archive-backed conversation reader. */
.embedded-image {
  display: inline-flex;
  flex-direction: column;
  max-width: 100%;
  gap: 0.3rem;
}
.embedded-image img,
.file-card img {
  display: block;
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
  height: auto;
}
.image-download,
.source-location {
  font-size: 0.85rem;
}
.unavailable-image {
  color: var(--color-muted);
  font-style: italic;
}
.attachments {
  display: grid;
  gap: 1rem;
  margin-block: 1.2rem;
}
.file-card {
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  padding: 1rem;
  min-width: 0;
  overflow-wrap: anywhere;
}
.file-card h3 {
  margin-block: 0.7rem 0.3rem;
}
.file-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.file-preview {
  margin-top: 1rem;
}
.file-preview pre,
.evidence-reader pre {
  max-width: 100%;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.evidence-reader {
  max-width: 900px;
  margin-inline: auto;
}
.evidence-reader h1 {
  overflow-wrap: anywhere;
}
.trace-categories {
  flex-wrap: wrap;
}
.evidence-message {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
  scroll-margin-top: 1rem;
}
.evidence-message > header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: baseline;
  margin-bottom: 0.8rem;
}
.evidence-message > header > a {
  margin-left: auto;
  font-size: 0.85rem;
}
.evidence-message:target {
  outline: 2px solid var(--color-link);
  outline-offset: 0.4rem;
  border-radius: 0.2rem;
}
.message-alias {
  scroll-margin-top: 1rem;
}
.source-location {
  margin-top: 1rem;
  color: var(--color-muted);
}
.source-location code {
  overflow-wrap: anywhere;
}
.article-evidence section {
  scroll-margin-top: 1rem;
  padding-block: 0.5rem;
}
@media (max-width: 760px) {
  .evidence-message {
    padding-block: 1rem;
  }
  .trace-categories a {
    padding: 0.5rem;
  }
}

/* Conversation headings must not inherit article-title sizing. */
.evidence-message > .prose h1 {
  font-size: 1.5rem;
}
.evidence-message > .prose h2 {
  font-size: 1.25rem;
}
.evidence-message > .prose h3 {
  font-size: 1.125rem;
}
.evidence-message > .prose {
  overflow-wrap: anywhere;
}
.original-message pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

#access form {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  padding: 1rem 0;
  border-bottom: 1px solid #ddd;
}
#access select {
  margin-left: 0.5rem;
  padding: 0.5rem;
}

.principal-identity {
  order: 1;
  flex-basis: 100%;
  overflow-wrap: anywhere;
  opacity: 0.8;
}

.invite-account label {
  display: grid;
  gap: 0.4rem;
}
.invite-account input {
  box-sizing: border-box;
  width: 100%;
}
.invite-account {
  margin: 2rem 0;
  padding: 1rem;
  border: 1px solid #cdd5d0;
  border-radius: 0.35rem;
}
.invite-account summary {
  cursor: pointer;
  font-weight: 600;
}
.invite-account form {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
  max-width: 34rem;
}
.invite-account output {
  display: block;
  overflow-wrap: anywhere;
}