/* md.css — rendered markdown: article.ui-md (§9.4). Serif reading face, sans headings, brass hairlines.
   R9 (D2): this is the first edition's reader, kept as it was for callers that have not adopted Paper (ui/paper.js). Inside a
   Paper the same article is re-typeset by css/paper.css (Palatino 16.5 px / 1.6, the Vellum tokens); the only hook added here is
   --ui-md-hr-bg, the colour under the "§" on a rule, so a surface other than --surface-content can say what it is. */
.ui-md {
  max-width: var(--ui-md-max-width, 78ch);
  font-family: var(--font-serif);
  font-size: calc(15px * var(--font-scale));
  line-height: var(--lh-read);
  color: var(--text-1);
  overflow-wrap: break-word;
  font-variant-numeric: lining-nums proportional-nums;
  hyphens: manual;
}
.ui-md > :first-child { margin-top: 0; }
.ui-md p, .ui-md ul, .ui-md ol, .ui-md blockquote, .ui-md .ui-md__pre-wrap, .ui-md .ui-md__table-wrap, .ui-md .ui-md__html, .ui-md hr { margin: 0 0 .85em; }
.ui-md .ui-md__h { position: relative; font-family: var(--font-ui); color: var(--text-1); line-height: var(--lh-tight); letter-spacing: -.005em; scroll-margin-top: 16px; font-variant-numeric: lining-nums; }
.ui-md h1 { font-family: var(--font-display); font-size: calc(26px * var(--font-scale)); font-weight: var(--fw-semibold); margin: 1.1em 0 .55em; letter-spacing: -.012em; }
.ui-md h2 { font-size: calc(19px * var(--font-scale)); font-weight: var(--fw-semibold); margin: 1.5em 0 .6em; padding-bottom: .35em; border-bottom: 1px solid transparent; border-image: linear-gradient(90deg, color-mix(in srgb, var(--accent), transparent 35%), transparent 85%) 1; }
.ui-md h3 { font-size: calc(16px * var(--font-scale)); font-weight: var(--fw-semibold); margin: 1.3em 0 .45em; }
.ui-md h4 { font-size: calc(14px * var(--font-scale)); font-weight: var(--fw-semibold); margin: 1.2em 0 .4em; color: var(--text-2); }
.ui-md h5, .ui-md h6 { font-size: calc(12.5px * var(--font-scale)); font-weight: var(--fw-semibold); margin: 1.1em 0 .35em; color: var(--text-3); text-transform: uppercase; letter-spacing: .06em; }
.ui-md .ui-md__anchor { position: absolute; left: -1.1em; top: 0; padding-right: .3em; color: var(--text-4); font-weight: var(--fw-regular); text-decoration: none !important; opacity: 0; transition: opacity var(--dur-fast); }
.ui-md .ui-md__h:hover .ui-md__anchor { opacity: 1; }
.ui-md .ui-md__anchor:hover { color: var(--accent); }
.ui-md .ui-md__h.is-flash { animation: w2-flash 1.6s var(--ease-out); }
.ui-md strong { font-weight: var(--fw-bold); color: color-mix(in srgb, var(--text-1), var(--accent) 8%); }
.ui-md em { font-style: italic; }
.ui-md del { color: var(--text-3); text-decoration-thickness: 1px; }
.ui-md a.ui-md__link { color: var(--accent); text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--accent), transparent 60%); text-underline-offset: 2px; text-decoration-thickness: 1px; cursor: pointer; }
.ui-md a.ui-md__link:hover { text-decoration-color: var(--accent); }
.ui-md a.ui-md__link--external { color: var(--info); text-decoration-color: color-mix(in srgb, var(--info), transparent 60%); }
.ui-md .ui-md__exticon { display: inline-block; margin-left: 2px; vertical-align: 0; opacity: .75; }
.ui-md code, .ui-md .ui-md__code-inline { font-family: var(--font-mono); font-size: .84em; padding: .08em .38em; border-radius: 4px; background: var(--surface-sunken); border: 1px solid var(--line-1); color: color-mix(in srgb, var(--text-1), var(--accent) 14%); font-variant-numeric: normal; }
.ui-md code.ui-md__path { cursor: pointer; color: var(--accent); border-color: color-mix(in srgb, var(--accent), transparent 70%); background: var(--accent-weak); transition: background-color var(--dur-fast); }
.ui-md code.ui-md__path:hover { background: color-mix(in srgb, var(--accent-weak), var(--accent) 15%); }
.ui-md code.ui-md__path:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.ui-md .ui-md__pre-wrap { position: relative; }
.ui-md .ui-md__pre { margin: 0; padding: 12px 14px; overflow: auto; border-radius: var(--r-3); background: var(--surface-sunken); border: 1px solid var(--line-1); font: calc(12.5px * var(--font-scale))/1.55 var(--font-mono); color: var(--text-1); tab-size: 4; }
.ui-md .ui-md__pre code { padding: 0; border: 0; background: none; font-size: inherit; color: inherit; }
.ui-md .ui-md__lang { position: absolute; right: 40px; top: 7px; font: var(--fw-semibold) 10px var(--font-ui); letter-spacing: .06em; text-transform: uppercase; color: var(--text-4); pointer-events: none; }
.ui-md .ui-md__copy { position: absolute; right: 6px; top: 5px; display: grid; place-items: center; width: 26px; height: 26px; border-radius: 6px; color: var(--text-3); background: var(--surface-3); border: 1px solid var(--line-1); opacity: 0; transition: opacity var(--dur-fast); }
.ui-md .ui-md__pre-wrap:hover .ui-md__copy, .ui-md .ui-md__copy:focus-visible { opacity: 1; }
.ui-md .ui-md__copy.is-done { color: var(--ok); opacity: 1; }
.ui-md blockquote { padding: .2em 0 .2em 1em; border-left: 1px solid color-mix(in srgb, var(--accent), transparent 45%); color: var(--text-2); font-style: italic; }
.ui-md blockquote > :last-child { margin-bottom: 0; }
.ui-md ul, .ui-md ol { padding-left: 1.5em; }
.ui-md li { margin: .22em 0; }
.ui-md li::marker { color: color-mix(in srgb, var(--accent), var(--text-3) 40%); }
.ui-md ol > li::marker { font-family: var(--font-ui); font-size: .9em; font-variant-numeric: tabular-nums; }
.ui-md .ui-md__list--tight > li > p { margin: 0; }
.ui-md li > ul, .ui-md li > ol { margin: .2em 0 .3em; }
.ui-md .ui-md__task { list-style: none; margin-left: -1.3em; }
.ui-md .ui-md__checkbox { margin: 0 .5em 0 0; vertical-align: -1px; accent-color: var(--accent); }
.ui-md hr { height: 0; border: 0; margin: 1.6em 0; border-top: 1px solid var(--line-2); position: relative; overflow: visible; }
.ui-md hr::after { content: "§"; position: absolute; left: 50%; top: -.72em; transform: translateX(-50%); padding: 0 .6em; font-size: .9em; color: color-mix(in srgb, var(--accent), transparent 30%); background: var(--ui-md-hr-bg, var(--surface-content)); }
.ui-md .ui-md__table-wrap { overflow-x: auto; border: 1px solid var(--line-1); border-radius: var(--r-3); }
.ui-md .ui-md__table { width: 100%; border-collapse: collapse; font-family: var(--font-ui); font-size: calc(13px * var(--font-scale)); line-height: 1.45; font-variant-numeric: tabular-nums; }
.ui-md .ui-md__table th { padding: 7px 10px; text-align: left; font-size: var(--fs-2xs); font-weight: var(--fw-semibold); letter-spacing: .05em; text-transform: uppercase; color: var(--text-3); background: var(--surface-sunken); border-bottom: 1px solid var(--line-2); white-space: nowrap; }
.ui-md .ui-md__table td { padding: 6px 10px; vertical-align: top; border-top: 1px solid var(--line-1); }
.ui-md .ui-md__table tbody tr:nth-child(even) td { background: color-mix(in srgb, var(--surface-sunken), transparent 45%); }
.ui-md .ui-md__table tbody tr:hover td { background: var(--w2-hover); }
.ui-md .ui-md__table tr.is-flash td { animation: w2-flash 1.6s var(--ease-out); }
.ui-md .ui-md__table code { font-size: .88em; overflow-wrap: anywhere; }   /* long file names wrap instead of widening the table past the column */
.ui-md .ui-md__html { white-space: pre-wrap; font-family: var(--font-mono); font-size: .82em; color: var(--text-3); }
.ui-md .ui-md__img { max-width: 100%; height: auto; border-radius: var(--r-2); border: 1px solid var(--line-1); }
.ui-md .ui-md__blocked { display: inline-flex; align-items: center; gap: 6px; padding: 2px 8px; border-radius: 6px; border: 1px dashed var(--line-3); color: var(--text-3); font-family: var(--font-ui); font-size: var(--fs-xs); }
.ui-md .ui-md__error, .ui-md .ui-md__empty { color: var(--text-3); font-style: italic; }
.ui-md [data-line].is-flash { animation: w2-flash 1.6s var(--ease-out); }
.ui-md.is-streaming::after { content: "Rendering the rest…"; display: block; margin-top: 1em; font: var(--fs-xs) var(--font-ui); color: var(--text-4); }
.ui-md .ui-token { font-variant-numeric: lining-nums; }