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@media(max-width:970px){.md-topbar:after{display:none}.md-chat-toggle{display:block}.md-chat-header-buttons #md-close-chat{display:block}}@media(max-width:650px){.md-chat-toggle{display:block}}

/* Passage IDs are invisible anchors inside the prose, never reading cards. */
.md-topbar .md-brand{font-size:21px;font-weight:700;letter-spacing:-.04em}
.md-mit-home{height:32px;display:flex;align-items:center;padding-left:26px;border-left:1px solid #e3e3e3}
.md-mit-home img{display:block;width:60.444px;height:32px}
.md-layout{grid-template-columns:minmax(0,1fr) minmax(340px,395px)}
.md-rail{display:none}
@media(max-width:970px){.md-layout{grid-template-columns:minmax(0,1fr)}}
@media(max-width:650px){.md-mit-home{margin-left:auto;padding-left:0;border-left:0}.md-chat-toggle{margin-left:0}}
.md-article .md-prose{font-family:'Source Serif 4',Georgia,serif;font-size:17px;line-height:1.86;letter-spacing:-.006em;color:#333337;margin:0 0 25px;text-align:justify;text-justify:inter-word;hyphens:auto;user-select:text}
.md-article .md-prose .md-passage{display:inline;position:relative;padding:0;margin:0;border:0;border-radius:0;box-shadow:none;background:transparent;scroll-margin-top:125px;transition:none}
.md-article .md-prose .md-passage:hover,.md-article .md-prose .md-passage.focused{padding:0;margin:0;box-shadow:none;background:transparent}
.md-article .md-prose .md-passage.focused::before{content:'↳';position:absolute;left:-18px;top:0;color:#920d2a;font:700 14px 'DM Sans',Arial,sans-serif}
.md-article .md-equation.md-passage{padding:28px 25px 21px;margin:19px 0 24px;background:#f8f8f7;box-shadow:none}
.md-article .md-equation.md-passage:hover,.md-article .md-equation.md-passage.focused{padding:28px 25px 21px;margin:19px 0 24px;background:#f8f8f7;box-shadow:none}
.md-article .md-equation.md-passage.focused::before{content:'↳';position:absolute;left:-18px;top:18px;color:#920d2a}
.md-article{position:relative}
.md-article .md-prose::selection,.md-article .md-prose *::selection{background:#ead5da;color:inherit}
.md-note-highlight-rect{position:absolute;z-index:1;pointer-events:none;background:rgba(117,0,20,.095);border-bottom:1px solid rgba(117,0,20,.22);border-radius:2px}
.md-note-highlight-rect.passage-level{background:rgba(117,0,20,.06);border-bottom-color:rgba(117,0,20,.16)}
.md-note-pin{position:absolute;z-index:4;display:grid;place-items:center;width:16px;height:16px;padding:0;border:1px solid #d8b7c0;border-radius:50%;background:#fff;color:#750014;font-size:10px;line-height:1;box-shadow:0 1px 3px #00000012}
.md-note-pin:hover{background:#f8eef0;border-color:#750014}
.md-article .md-note-marker{display:inline;border:0;background:none;color:#900d2b;padding:0 2px;margin-left:2px;font-size:12px;vertical-align:super;line-height:1;cursor:pointer;user-select:none}
.md-article .md-note-marker[hidden]{display:none}
@media(max-width:650px){.md-article .md-prose{font-size:16px;line-height:1.8}}

/* Reading tools sit directly below the MIT Locus brand. */
.md-reader-tools{position:fixed;left:30px;top:86px;z-index:24;display:flex;align-items:center;background:rgba(255,255,255,.97);border:1px solid #ddd9da;box-shadow:0 7px 24px rgba(35,24,28,.09);backdrop-filter:blur(12px)}
.md-reader-tools button{height:42px;display:flex;align-items:center;gap:8px;border:0;background:transparent;padding:0 15px;color:#525256;font-size:11px;font-weight:700;white-space:nowrap}
.md-reader-tools button+button{border-left:1px solid #e5e2e3}
.md-reader-tools button:hover,.md-reader-tools button[aria-expanded="true"]{color:#790a21;background:#faf6f7}
.md-reader-tools .md-tool-icon{color:#8b0d29;font:500 15px 'Source Serif 4',Georgia,serif}
.md-reader-tools #md-notes-count{min-width:17px;height:17px;display:inline-grid;place-items:center;margin-left:1px;border-radius:50%;background:#f2e4e7;color:#790a21;font-size:9px}

/* Notes live on the opposite side from chat and never replace it. */
.md-notes{position:fixed;left:0;top:68px;bottom:0;width:min(410px,calc(100vw - 40px));z-index:28;display:flex;flex-direction:column;min-height:0;border-right:1px solid #dedbdd;background:#fff;box-shadow:12px 0 38px rgba(35,24,28,.11);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility 0s linear .24s}
.md-app.notes-open .md-notes{transform:translateX(0);visibility:visible;pointer-events:auto;transition:transform .24s ease}
.md-notes-header{display:flex;align-items:center;justify-content:space-between;padding:30px 27px 22px;border-bottom:1px solid #e9e9e9}
.md-notes.detail-open .md-notes-header{display:none}
.md-notes-header .md-overline{margin:0 0 6px}
.md-notes-header h2{font:500 30px 'Source Serif 4',Georgia,serif;letter-spacing:-.045em;margin:0}
.md-notes-header h2 span{color:#8c0e29}
.md-notes-header button,.md-note-head button{border:0;background:none;color:#777;font-size:24px;padding:2px 6px}
.md-notes-list-view,.md-note-editor{min-height:0;overflow-y:auto;padding:25px 29px 40px}
.md-notes-list-view[hidden],.md-note-editor[hidden]{display:none}
.md-notes-intro,.md-notes-empty{font:14px/1.55 'Source Serif 4',Georgia,serif;color:#77777a;margin:0 0 25px}
.md-notes-list{display:grid;gap:0}
.md-note-card{display:grid;gap:7px;text-align:left;border:0;border-top:1px solid #e5e5e5;background:none;padding:18px 1px 19px;color:#303034}
.md-note-card:hover{background:#f8f2f3}
.md-note-card strong{font:500 19px 'Source Serif 4',Georgia,serif;line-height:1.25}
.md-note-card-quote{font:13px/1.45 'Source Serif 4',Georgia,serif;color:#76767a;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.md-note-card small{font-size:10px;font-weight:700;color:#890d29}
.md-back-notes{border:0;background:none;padding:0;margin:0 0 29px;color:#8a0d28;font-size:11px;font-weight:700}
.md-note-editor{padding-top:27px}
.md-note-editor .md-note-head{margin-bottom:20px}
.md-note-editor .md-note-head .md-overline{margin:0 0 8px}
.md-note-editor .md-note-head h2{font:500 28px 'Source Serif 4',Georgia,serif;margin:0}
.md-note-view[hidden],.md-note-editor form[hidden]{display:none}
.md-note-view{margin-top:22px;border-top:1px solid #e4e1e2;padding-top:18px}
.md-note-view-meta{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:17px}
.md-note-view-meta span{color:#8d8d90;font-size:9px;font-weight:700;letter-spacing:.14em}
.md-note-view-meta button{display:grid;place-items:center;width:29px;height:29px;border:1px solid #ded9da;background:#fff;color:#790a21;font-size:13px}
.md-note-view-meta button:hover{border-color:#9c5364;background:#faf5f6}
.md-note-view-body{white-space:pre-wrap;color:#363639;font:16px/1.68 'Source Serif 4',Georgia,serif}
.md-note-editor label{display:block;font-size:10px;font-weight:700;color:#68686b;margin:23px 0 8px}
.md-note-editor input,.md-note-editor textarea{width:100%;border:1px solid #dcdcdc;background:#fff;padding:12px;outline:0;color:#303034}
.md-note-editor textarea{resize:vertical;min-height:180px;line-height:1.55}
.md-note-editor input:focus,.md-note-editor textarea:focus{border-color:#8c0a27}
.md-note-quote{margin:0;padding:16px 17px;border-left:2px solid #8f1933;background:#faf6f7;color:#5f5f63;font:13px/1.58 'Source Serif 4',Georgia,serif;max-height:170px;overflow-y:auto}
.md-note-source-link{display:inline-block;margin:10px 0;color:#8a0d28;font-size:11px;font-weight:700;text-decoration:none}
.md-note-quote[hidden],.md-note-source-link[hidden]{display:none}
.md-note-chat-link{display:block;border:0;background:none;color:#8a0d28;font-size:11px;font-weight:700;padding:12px 0 0}
.md-note-chat-link[hidden]{display:none}
.md-return-focus{outline:2px solid #b16577;outline-offset:8px}
.md-note-editor .md-note-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:22px}
.md-note-editor .md-note-actions>div{display:flex;gap:7px}
.md-note-editor .md-note-actions button{border:0;padding:10px 14px;font-size:11px;font-weight:700}
.md-note-editor .md-note-actions button:first-child{background:none;color:#a04255;padding-left:0}
.md-note-editor .md-note-actions>div button{border:1px solid #d9d6d7;background:#fff;color:#5e5e62;padding:9px 13px}
.md-note-editor .md-note-actions>div button:last-child{border-color:#790a21;background:#790a21;color:#fff}
.md-note-editor .md-note-actions button[hidden]{display:none}
.md-note-pin{position:absolute;z-index:4;width:13px;height:23px;border:0;border-radius:0;padding:0;background:transparent;box-shadow:none;color:transparent}
.md-note-pin::before{content:'';position:absolute;top:3px;left:5px;width:2px;height:15px;border-radius:1px;background:#a4324a;opacity:.65}
.md-note-pin:hover{background:transparent;border:0}
.md-note-pin:hover::before{opacity:1;width:3px}
@media(max-width:970px){.md-reader-tools{left:22px;top:84px}.md-nav{display:flex;gap:16px}}
@media(max-width:650px){.md-reader-tools{left:16px;top:80px}.md-reader-tools button{height:40px;padding:0 12px}.md-notes{width:100vw;max-width:none}.md-topbar .md-nav{display:flex;margin-left:auto;gap:11px}.md-topbar .md-nav a{display:none}.md-mit-home{display:none}.md-book-wrap{display:none}}

/* The same grounded concept map, reachable without leaving the Markdown reader. */
.md-map-panel{position:fixed;z-index:35;top:68px;right:0;bottom:0;left:0;display:grid;grid-template-rows:auto minmax(0,1fr);background:#fff;color:#29292b}
.md-map-panel[hidden]{display:none}
.md-map-header{min-height:91px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 30px;border-bottom:1px solid #e4e4e4}
.md-map-header .md-overline{margin:0 0 5px}
.md-map-header h2{font:500 32px 'Source Serif 4',Georgia,serif;letter-spacing:-.04em;margin:0}
.md-map-header h2 span{color:#8c0e29}
.md-map-actions{display:flex;align-items:center;gap:8px}
.md-map-actions span{font-size:11px;color:#777;white-space:nowrap}
.md-map-actions #md-map-grounding{margin-right:18px}
.md-map-actions button{height:32px;min-width:32px;border:1px solid #ddd;background:#fff;color:#505055;font-size:15px}
.md-map-actions button:hover{border-color:#9a2440;color:#790a21}
.md-map-actions #md-map-fit{font-size:11px;padding:0 9px}
.md-map-actions #md-map-close{margin-left:15px;border:0;font-size:24px}
.md-map-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;min-height:0}
.md-map-canvas{position:relative;overflow:hidden;min-width:0;min-height:0;background:#fff;cursor:grab;touch-action:none;user-select:none}
.md-map-canvas.dragging{cursor:grabbing}
.md-map-world{position:absolute;top:0;left:0;transform-origin:0 0;will-change:transform}
.md-map-edges,.md-map-nodes{position:absolute;inset:0;width:100%;height:100%}
.md-map-edges{pointer-events:none;overflow:visible}
.md-map-edges marker path{fill:#9ca0a5}
.md-map-edge{fill:none;stroke:#a7adb2;stroke-width:1.7;opacity:.7;transition:opacity .15s,stroke .15s}
.md-map-edge.active{stroke:#790a21;stroke-width:2.2;opacity:1}
.md-map-edge.muted{opacity:.3}
.md-map-edge-label rect{fill:#fff;stroke:#e3e3e3}
.md-map-edge-label text{fill:#55585d;font:600 11px 'DM Sans',Arial,sans-serif}
.md-map-edge-label.active rect{stroke:#ab6e7d}
.md-map-edge-label.active text{fill:#790a21}
.md-map-edge-label.muted{opacity:.48}
.md-map-nodes{pointer-events:none}
.md-map-node{position:absolute;display:grid;grid-template-columns:22px minmax(0,1fr);grid-template-rows:1fr auto;column-gap:8px;align-items:center;width:178px;height:76px;padding:11px;background:#fff;border:1px solid #d9dce0;color:#29292b;text-align:left;transform:translate(-50%,-50%);pointer-events:auto;touch-action:none;cursor:grab}
.md-map-node.core{width:222px;height:96px;border-color:#790a21}
.md-map-node:hover,.md-map-node.selected{border-color:#790a21;outline:2px solid #790a21;z-index:3}
.md-map-node small{grid-row:1/3;align-self:start;color:#8b8b8e;font-size:10px}
.md-map-node strong{font:600 14px/1.15 'DM Sans',Arial,sans-serif}
.md-map-node span{font-size:10px;color:#88888b}
.md-map-hint{position:absolute;left:22px;bottom:15px;margin:0;padding:7px 10px;background:#fff;border:1px solid #ececec;color:#777;font-size:10px;pointer-events:none}
.md-map-detail{border-left:1px solid #e5e5e5;padding:30px 27px 40px;overflow-y:auto;background:#fbfbfa}
.md-map-detail .md-overline{margin:0 0 10px}
.md-map-detail h3{font:500 30px/1.15 'Source Serif 4',Georgia,serif;margin:0 0 16px}
.md-map-detail>p:not(.md-overline){font:14px/1.55 'Source Serif 4',Georgia,serif;color:#515156}
.md-map-detail blockquote{font:13px/1.55 'Source Serif 4',Georgia,serif;color:#68686c;border-left:2px solid #c8a6ae;padding:0 0 0 13px;margin:25px 0}
.md-map-detail-actions{display:flex;flex-wrap:wrap;gap:8px}
.md-map-detail-actions button{border:1px solid #790a21;background:#790a21;color:#fff;padding:10px 12px;font-size:11px;font-weight:700}
.md-map-detail-actions button+button{background:#fff;color:#790a21}
.md-map-detail h4{margin:35px 0 13px;font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.md-map-relation{display:grid;gap:3px;border-top:1px solid #e7e7e7;padding:11px 0}
.md-map-relation small{font-size:10px;color:#8b8b8e}
.md-map-relation strong{font-size:11px;font-weight:600;color:#49494d}
@media(max-width:850px){.md-map-layout{grid-template-columns:minmax(0,1fr) 250px}.md-map-header{padding:14px 18px}.md-map-actions #md-map-grounding{display:none}}
@media(max-width:650px){.md-map-layout{grid-template-columns:1fr}.md-map-detail{display:none}.md-map-header h2{font-size:24px}.md-map-actions{gap:3px}.md-map-actions #md-map-zoom-label{display:none}.md-map-actions #md-map-close{margin-left:4px}.md-map-hint{display:none}}

/* Source links reveal the exact supporting words without covering a paragraph. */
.md-message.assistant .md-citation{border:0;border-bottom:1px solid rgba(121,10,33,.34);background:transparent;color:#790a21;font-size:9px;font-weight:700;letter-spacing:.02em;padding:0 1px;margin-left:7px;vertical-align:baseline;opacity:.72}
.md-message.assistant .md-citation:hover,.md-message.assistant .md-citation:focus-visible{background:transparent;border-bottom-color:#790a21;opacity:1}
.md-message.assistant p mjx-container{margin:0 .08em!important;color:#29292b;font-size:1.04em!important}
.md-message.assistant p mjx-container[display="true"]{display:block!important;margin:15px 0 18px!important;padding:13px 0;overflow-x:auto;border-top:1px solid #eadfe2;border-bottom:1px solid #eadfe2;text-align:center}
.md-article .md-prose .md-passage.focused{padding:0;margin:0;box-shadow:none;background:rgba(121,10,33,.055)!important;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.md-article .md-prose .md-passage.focused::before,.md-article .md-equation.md-passage.focused::before{content:none}
::highlight(md-citation-focus){background:rgba(150,39,65,.16);color:inherit;text-decoration:underline;text-decoration-color:rgba(121,10,33,.36);text-decoration-thickness:1px;text-underline-offset:3px}
mark.md-citation-focus{background:rgba(150,39,65,.16);color:inherit;text-decoration:underline;text-decoration-color:rgba(121,10,33,.36);text-decoration-thickness:1px;text-underline-offset:3px}

/* Keep the compact chat controls optically centered in their square buttons. */
.md-chat-header-buttons button{display:grid;place-items:center;padding:0;line-height:1}
.md-chat-header-buttons #md-new-chat{font-size:21px}

/* Inline mathematics stays part of the sentence, without display-equation chrome. */
.md-article .md-prose .md-inline-equation{display:inline;white-space:nowrap;margin:0 .045em;color:#252529;vertical-align:-.04em}
.md-article .md-prose .md-inline-equation mjx-container{display:inline!important;margin:0!important;font-size:1.01em!important}
.md-article .md-prose .md-inline-equation mjx-assistive-mml{pointer-events:none}
.md-article .md-prose .md-inline-equation::selection,.md-article .md-prose .md-inline-equation *::selection{background:#ead5da;color:inherit}
.md-article .md-prose .md-inline-equation.md-native-selected,.md-article .md-prose .md-inline-equation.md-native-selected mjx-container,.md-article .md-prose .md-inline-equation.md-native-selected svg{background:#ead5da!important}