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/* Table: publication surface above an inspectable source strip. */
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/* TikZ: wide, exact scientific construction and a dedicated inspector. */
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/* Collaboration: source chapter and an attached discussion, without app chrome. */
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/* Mathematics: source, selected equation, and a separate review surface. */
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.b5-collab-panel[data-frame="3"]{--cursor-y:86}
.b5-math-panel:is([data-frame="4"],[data-frame="5"]){--cursor-x:94;--cursor-y:60}
.b5-math-side-note{position:absolute;bottom:43px;left:35px;right:30px;display:flex;align-items:center;gap:28px;color:#bd9caf}
.b5-math-side-note math{font-size:48px;color:#eeaa90}
.b5-math-side-note>div{display:grid;gap:10px;font-size:12px}
.b5-math-side-note b{font-weight:400}.b5-math-side-note span{font-size:10px;color:#826b8a}
@media(max-width:850px){.b5-math-side-note{display:none}.b5-math-panel:is([data-frame="4"],[data-frame="5"]){--cursor-x:87;--cursor-y:64}}
@media(max-width:600px){.b5-source-change{display:inline}.b5-editor-panel[data-frame="3"]{--cursor-x:72;--cursor-y:15}.b5-collab-panel[data-frame="3"]{--cursor-y:86}.b5-math-panel:is([data-frame="4"],[data-frame="5"]){--cursor-x:83;--cursor-y:69}.b5-intro>p:not(.b5-category){margin-bottom:18px}.b5-scientific-paper h3{margin-bottom:6px}.b5-paper-byline{display:none}.b5-scientific-paper h4{margin-top:13px}}
@media(min-width:601px) and (max-width:850px){.b5-math-inserted math{font-size:23px}.b5-math-inserted>span{right:0;top:calc(100% + 8px)}}
.b5-collab-panel[data-frame="3"]{--cursor-y:84}
/* V6: mixed-language source and the source-anchored Equation card. */
.b5-hero{padding-top:35px}.b5-intro{margin-bottom:30px}.b5-intro h1{font-size:clamp(44px,5vw,68px);margin-bottom:18px}.b5-intro>p:not(.b5-category){font-size:16px;line-height:1.7}.b5-hero-mount{padding:8px;border-radius:14px}.b5-jump{border:0;padding-top:28px}.b5-feature{padding-block:95px}.b5-copy h2,.b5-section-heading h2{margin-top:0}.b5-closing h2{margin-top:0}
.b6-solver-panel{--cursor-x:20;--cursor-y:35;--pointer-ink:#d38368}.b6-solver-panel .motion-stage{height:590px;border-radius:7px;background:#231f27}.b6-filebar{height:40px;display:grid;grid-template-columns:75% 25%;font-size:11px;background:#201d24;border-bottom:1px solid #39313c;color:#c4b8ca}.b6-filebar>span{padding:12px 22px}.b6-filebar>span:last-child{border-inline-start:1px solid #39313c;background:#342c34}.b6-source-pane{position:absolute;top:40px;left:0;right:25%;bottom:0;padding:25px 25px;color:#c9bfce}.b6-source-pane .b5-code-line{font-size:14px;line-height:28px;min-height:28px;gap:18px}.b6-source-pane .b5-code-line:has(code:empty){height:12px;min-height:12px;line-height:12px}.b6-source-pane .bi5-line-index{font-size:10px;min-width:19px;color:#776b80}.b6-source-pane .b6-arabic-source{margin-block:4px;line-height:32px;min-height:32px}.b6-arabic-source code{width:100%;font-family:AtwNotoArabic,AtwMono,monospace;direction:rtl;text-align:right;font-size:16px;padding-inline:14px 0}.b6-arabic-source bdi{font:13px AtwMono,monospace;color:#c1cfae;unicode-bidi:isolate}.b6-active-source{background:#df947d0c;outline:1px solid transparent;transition:background .25s,outline-color .25s}.b6-active-source code{white-space:pre-wrap;overflow-wrap:anywhere;min-width:0}.b6-inserted-source{display:none;color:#cbd9b4}.b6-example{display:none}.b6-solver-panel[data-example="0"] .b6-example-0,.b6-solver-panel[data-example="1"] .b6-example-1,.b6-solver-panel[data-example="2"] .b6-example-2{display:contents}.b6-pdf-strip{position:absolute;right:0;top:40px;bottom:0;width:25%;padding:23px 20px;background:#4c4147;overflow:hidden}.b6-pdf-page{background:#fffaf3;color:#493e3b;padding:25px 21px;min-height:100%;font:11px/1.7 Georgia,'Amiri',serif;box-shadow:0 8px 22px #23152326}.b6-pdf-page h3{font:23px/1.1 Georgia,serif;letter-spacing:-.035em;margin:0 0 16px}.b6-pdf-page p{margin:0 0 14px}.b6-pdf-page p[lang=ar]{font-family:'Amiri',serif;font-size:16px;line-height:1.5;margin-bottom:28px}.b6-pdf-page h4{font:600 12px Georgia,serif;margin:0 0 9px}.b6-pdf-page svg{display:block;width:100%;height:auto;margin:21px 0;color:#7c5144}.b6-pdf-page svg text{font:11px Georgia,serif;fill:currentColor}.b6-pdf-page .b5-paper-table{font-size:11px}.b6-pdf-page .b5-paper-table td,.b6-pdf-page .b5-paper-table th{padding:6px 4px}.b6-pdf-page .b6-pdf-note{font-size:8px;color:#8d7770;margin:13px 0 0}
.b6-math-card{position:absolute;left:14%;top:242px;width:49%;max-width:520px;padding:12px 15px 10px;background:#f4efeb;border:1px solid #bdaaa3;border-radius:9px;box-shadow:0 15px 36px #100a1740;color:#3c3036;z-index:5;opacity:0;transform:translateY(-5px);transition:opacity .22s,transform .3s;pointer-events:none;direction:ltr;text-align:start}.b6-card-header{display:flex;justify-content:space-between;align-items:center;font-size:11px}.b6-card-header strong{font-weight:550}.b6-card-header>span{font-size:16px;line-height:1;color:#9c898d}.b6-card-input{min-height:48px;padding:6px 0 10px}.b6-math-card math{font-family:math;direction:ltr;font-size:27px}.b6-card-toolbar{display:flex;align-items:center;gap:14px;margin:0 0 10px;font-size:11px;line-height:1.4}.b6-solve-trigger{display:flex;gap:18px;align-items:center;padding:6px 10px;border:1px solid #c8b8b5;border-radius:5px;background:#fffaf7}.b6-solve-trigger i{font-style:normal}.b6-variable{display:flex;align-items:center;gap:8px;color:#76636a}.b6-variable bdi{font:12px AtwMono,monospace;display:inline-block;padding:5px 10px;background:#fffaf7;border:1px solid #d4c6c0;border-radius:4px;color:#4f3942}.b6-engine{margin-inline-start:auto;color:#73636c;white-space:nowrap}.b6-calculation-options{font-size:10px;line-height:1.6;color:#88747c}.b6-solver-panel .b6-detected-bounds{font-size:10px;color:#8e747a;margin:0 0 8px}.b6-solver-panel[data-example="2"] .b6-detected-bounds{display:block}.b6-card-result{position:absolute;top:calc(100% - 8px);left:-1px;right:-1px;padding:15px;background:#f4efeb;border:1px solid #bdaaa3;border-top:1px solid #d8c9c3;border-radius:0 0 9px 9px;box-shadow:0 17px 23px #100a1720;opacity:0;transform:translateY(-8px);transition:opacity .25s,transform .35s;pointer-events:none}.b6-result-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:10px}.b6-result-heading strong{font-weight:550}.b6-result-heading>span{font-size:9px;color:#92787f}.b6-result-formula{padding:12px 0;min-height:55px}.b6-result-formula math{font-size:29px}.b6-result-source{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#e8ded9;border:1px solid #d6c5bf;border-radius:4px;padding:8px 10px;font-size:10px;min-height:32px;color:#755248}.b6-result-source code{font:10px AtwMono,monospace;white-space:nowrap}.b6-result-source>span:last-child{font-size:15px;color:#8c7379}.b6-result-note{font-size:10px;line-height:1.5;color:#8d757d;margin:10px 0 0}.b6-solver-panel[data-example="1"] .b6-result-note{display:block}.b6-card-actions{display:flex;justify-content:flex-end;margin-top:11px}.b6-card-actions>span{font-size:10px;line-height:1.4;padding:7px 11px;background:#b65b42;color:#fff3e9;border-radius:4px}.b6-solve-menu{position:absolute;left:15px;top:116px;width:185px;padding:5px;background:#fffaf5;border:1px solid #c9b8b0;box-shadow:0 9px 22px #30233330;border-radius:6px;opacity:0;transform:translateY(-5px);transition:opacity .18s,transform .25s;z-index:7;font-size:11px;line-height:1.5;color:#584049}.b6-solve-menu>span{display:block;padding:6px 9px;border-radius:3px}.b6-solver-panel[data-example="0"] [data-operation=evaluate],.b6-solver-panel[data-example="1"] [data-operation=solve],.b6-solver-panel[data-example="2"] [data-operation=integrate]{background:#b86148;color:#fff4e8}.b6-solver-panel:is([data-frame="1"],[data-frame="2"],[data-frame="3"],[data-frame="4"],[data-frame="5"]) .b6-math-card{opacity:1;transform:none}.b6-solver-panel:is([data-frame="2"],[data-frame="3"]) .b6-solve-menu{opacity:1;transform:none}.b6-solver-panel[data-frame="5"] .b6-card-result{opacity:1;transform:none}.b6-solver-panel:is([data-frame="6"],[data-frame="7"]) .b6-original-source{display:none}.b6-solver-panel:is([data-frame="6"],[data-frame="7"]) .b6-inserted-source{display:inline}.b6-solver-panel:is([data-frame="6"],[data-frame="7"]) .b6-active-source{background:#adc39212;outline-color:#a7bb8240}.b6-solver-panel[data-frame="1"]{--cursor-x:22;--cursor-y:59}.b6-solver-panel[data-frame="2"]{--cursor-x:23;--cursor-y:61}.b6-solver-panel[data-frame="3"]{--cursor-x:24;--cursor-y:75}.b6-solver-panel[data-frame="4"],.b6-solver-panel[data-frame="5"]{--cursor-x:55;--cursor-y:92}.b6-solver-panel[data-example="1"][data-frame="3"]{--cursor-y:65}.b6-solver-panel[data-example="2"][data-frame="3"]{--cursor-y:83}
/* Shapes library: choose a native symbol, then it appears selected on canvas. */
.b6-library-panel{--cursor-x:57;--cursor-y:55}.b6-library-panel .motion-stage{height:480px;background:#26232a;border:1px solid #4b414c}.b6-tikz-top{height:43px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;background:#211e25;border-bottom:1px solid #423747;font-size:11px;color:#c0b1c7}.b6-tikz-top>span:last-child{background:#9c513d;color:#ffede2;border:1px solid #b46a52;padding:4px 13px;border-radius:4px}.b6-shapes-library{position:absolute;top:43px;left:0;bottom:0;width:285px;border-right:1px solid #4a3b50;background:#302936;padding:0 17px;color:#bca9c6}.b6-library-tabs{display:flex;gap:24px;font-size:12px;padding:17px 0 13px;border-bottom:1px solid #4d3c55}.b6-library-tabs strong{color:#eee0ec;font-weight:500;border-bottom:2px solid #dd9c80;padding-bottom:13px;margin-bottom:-14px}.b6-shape-search{display:flex;align-items:center;gap:10px;margin:17px 0 22px;padding:7px 9px;border:1px solid #5b4861;border-radius:5px;font-size:15px;color:#9d84a9;background:#2b232f}.b6-shape-search>span{font-size:10px}.b6-library-group{font-size:10px;color:#c2a8cc;margin:17px 0 12px}.b6-library-tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}.b6-library-tile{display:flex;flex-direction:column;align-items:center;gap:5px;padding:6px 3px 8px;background:#3c3044;border:1px solid #5b4567;border-radius:5px;color:#d9bedf;transition:background .2s,border-color .2s}.b6-library-tile svg{width:42px;height:42px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linejoin:round;stroke-linecap:round}.b6-library-tile svg text{font:16px Georgia,serif;fill:currentColor;stroke:none}.b6-library-tile>span{font-size:8px;text-align:center;line-height:1.4}.b6-collapsed-group{padding-top:14px;border-top:1px solid #4f3d59;margin-top:22px}.b6-tikz-canvas{position:absolute;top:43px;left:285px;right:0;bottom:70px;background:#28252d}.b6-force-canvas{width:100%;height:100%;padding:20px 40px;overflow:visible}.b6-canvas-axis{stroke:#514151;stroke-width:1;fill:none}.b6-placed-figure{opacity:0;transform:translateY(10px) scale(.97);transform-origin:center;transition:opacity .3s,transform .5s}.b6-pendulum-support{stroke:#a590b2;stroke-width:2;fill:none}.b6-pendulum-rod{stroke:#e2baa7;stroke-width:2.3;fill:none}.b6-pendulum-bob{fill:#e9a685;stroke:#ffc9a3;stroke-width:1}.b6-object-box{fill:#c57f6807;stroke:#cd947f;stroke-width:1;stroke-dasharray:4 5}.b6-object-handles{fill:#3f2c39;stroke:#e5a386;stroke-width:1}.b6-tikz-code{position:absolute;bottom:0;right:0;left:285px;height:70px;background:#1e1b22;border-top:1px solid #423449;padding:14px 22px;font-size:12px;color:#c4b0cc}.b6-tikz-code code{font:12px/1.7 AtwMono,monospace;opacity:0;transition:opacity .25s}.b6-tikz-code code b{font-weight:400;color:#e7a68a}.b6-library-panel[data-frame="1"],.b6-library-panel[data-frame="2"]{--cursor-x:5;--cursor-y:44}.b6-library-panel[data-frame="3"],.b6-library-panel[data-frame="4"],.b6-library-panel[data-frame="5"]{--cursor-x:66;--cursor-y:57}.b6-library-panel:is([data-frame="1"],[data-frame="2"]) .b6-tile-force{border-color:#f0b18f;background:#674247}.b6-library-panel:is([data-frame="2"],[data-frame="3"],[data-frame="4"],[data-frame="5"]) .b6-placed-figure{opacity:1;transform:none}.b6-library-panel:is([data-frame="2"],[data-frame="3"],[data-frame="4"],[data-frame="5"]) .b6-tikz-code code{opacity:1}
.b5-collab-heading>bdi{font-size:10px}.b5-chapter-card h3{margin-top:0}.b5-discussion-card small{display:none}.b5-table-publication h3{margin-bottom:30px}.b5-collab-panel .motion-stage{height:470px}.b5-chapter-card{bottom:37px}.b5-discussion-card{bottom:25px}.b5-table-panel .b5-table-title{font-size:11px}.concept-b:lang(ar) .b6-math-card{direction:rtl}.concept-b:lang(ar) .b6-solve-menu{direction:rtl;left:auto;right:15px}.concept-b:lang(ar) .b6-result-source{direction:ltr}.concept-b:lang(ar) .b6-library-tabs,.concept-b:lang(ar) .b6-library-group,.concept-b:lang(ar) .b6-shape-search{direction:rtl}.concept-b:lang(ar) .b6-library-tiles{direction:rtl}
@media(max-width:1100px){.b6-source-pane{right:24%;padding-inline:18px}.b6-source-pane .b5-code-line{font-size:12px;gap:12px}.b6-arabic-source code{font-size:15px}.b6-filebar{grid-template-columns:76% 24%}.b6-pdf-strip{width:24%;padding:20px 13px}.b6-pdf-page{padding:23px 15px}.b6-pdf-page h3{font-size:20px}.b6-math-card{left:10%;width:59%;max-width:520px}.b6-shapes-library{width:250px;padding-inline:13px}.b6-tikz-canvas,.b6-tikz-code{left:250px}.b6-library-tile svg{width:38px;height:38px}.b6-library-tile>span{font-size:7px}.b6-force-canvas{padding-inline:18px}.b6-solver-panel[data-frame="1"],.b6-solver-panel[data-frame="2"]{--cursor-x:19}.b6-solver-panel[data-frame="3"]{--cursor-x:22}.b6-solver-panel:is([data-frame="4"],[data-frame="5"]){--cursor-x:60}}
@media(max-width:850px){.b5-intro h1{font-size:51px}.b6-solver-panel .motion-stage{height:590px}.b6-source-pane .b5-code-line{font-size:11px}.b6-arabic-source code{font-size:15px}.b6-arabic-source bdi{font-size:11px}.b6-pdf-strip{padding:16px 10px}.b6-pdf-page{padding:23px 12px;font-size:10px}.b6-pdf-page h3{font-size:18px}.b6-pdf-page .b5-paper-table{font-size:9px}.b6-pdf-page .b5-paper-table td,.b6-pdf-page .b5-paper-table th{padding-inline:2px}.b6-math-card{left:7%;width:66%;top:235px}.b6-shapes-library{width:230px}.b6-tikz-canvas,.b6-tikz-code{left:230px}.b6-library-tile{padding-inline:1px}.b6-library-tile svg{width:35px;height:35px}.b6-library-tile>span{font-size:7px}.b6-tikz-code{padding-inline:15px;font-size:11px}.b6-tikz-code code{font-size:11px}.b6-library-panel[data-frame="1"],.b6-library-panel[data-frame="2"]{--cursor-x:6}.b6-solver-panel[data-frame="1"],.b6-solver-panel[data-frame="2"]{--cursor-x:18}.b6-solver-panel[data-frame="3"]{--cursor-x:22}.b6-solver-panel:is([data-frame="4"],[data-frame="5"]){--cursor-x:63}}
@media(max-width:600px){.b5-hero{padding-top:29px}.b5-intro h1{font-size:41px;margin-bottom:16px}.b5-intro>p:not(.b5-category){font-size:14px;line-height:1.75}.b5-intro{margin-bottom:25px}.b5-hero-mount{padding:6px;border-radius:11px}.b5-jump{padding-block:20px}.b5-feature{padding-block:55px}.b6-solver-panel .motion-stage{height:690px}.b6-filebar{height:35px;display:flex;font-size:10px}.b6-filebar>span{padding:11px 14px}.b6-filebar>span:last-child{display:none}.b6-source-pane{top:35px;right:0;bottom:auto;padding:14px 12px}.b6-source-pane .b5-code-line{font-size:11px;line-height:25px;min-height:25px;gap:9px}.b6-source-pane .bi5-line-index{font-size:9px;min-width:16px}.b6-source-pane .b5-code-line:has(code:empty){display:none}.b6-source-pane .b5-code-line:nth-child(n+8){display:none}.b6-source-pane .b6-arabic-source{line-height:29px;min-height:29px;margin-block:4px}.b6-arabic-source code{font-size:14px;line-height:29px;padding-inline:0}.b6-arabic-source bdi{font-size:11px}.b6-pdf-strip{top:auto;bottom:0;left:0;right:0;width:auto;height:112px;padding:10px;background:#4d4047}.b6-pdf-page{display:grid;grid-template-columns:1fr 110px;grid-template-rows:auto auto;column-gap:10px;padding:13px 15px;min-height:0;height:110px;overflow:hidden;position:relative}.b6-pdf-page h3{font-size:18px;margin:0;grid-column:1;grid-row:1}.b6-pdf-page p[lang=ar]{font-size:13px;margin:0;grid-column:1;grid-row:2;align-self:start;text-align:start;direction:ltr}.b6-pdf-page svg{width:110px;margin:0;grid-column:2;grid-row:1/3;align-self:center}.b6-pdf-page h4,.b6-pdf-page>p:not([lang=ar]),.b6-pdf-page .b5-paper-table{display:none}.b6-math-card{left:11px;right:11px;top:222px;width:auto;max-width:none;padding:12px 13px 10px}.b6-card-header{font-size:10px}.b6-card-input{min-height:44px;padding-block:5px 9px}.b6-math-card math{font-size:26px}.b6-card-toolbar{gap:10px;font-size:10px;margin-bottom:8px}.b6-solve-trigger{gap:12px;padding:6px 8px}.b6-variable{gap:6px}.b6-variable bdi{font-size:11px;padding:5px 8px}.b6-engine{font-size:10px}.b6-calculation-options{font-size:9px}.b6-card-result{padding:12px 13px}.b6-result-heading{font-size:10px;gap:10px}.b6-result-heading>span{font-size:8px}.b6-result-formula{padding:11px 0;min-height:50px}.b6-result-formula math{font-size:28px}.b6-result-source{padding:7px 8px;gap:8px;min-height:30px}.b6-result-source code{font-size:9px}.b6-result-note{font-size:9px;line-height:1.6}.b6-card-actions>span{font-size:9px;padding:7px 10px}.b6-solve-menu{top:108px;left:13px;width:170px;font-size:10px}.b6-solve-menu>span{padding:6px 8px}.b6-solver-panel{--cursor-x:29;--cursor-y:25}.b6-solver-panel[data-frame="1"],.b6-solver-panel[data-frame="2"]{--cursor-x:16;--cursor-y:47}.b6-solver-panel[data-frame="3"]{--cursor-x:27;--cursor-y:59}.b6-solver-panel[data-example="1"][data-frame="3"]{--cursor-y:51}.b6-solver-panel[data-example="2"][data-frame="3"]{--cursor-y:66}.b6-solver-panel[data-frame="4"],.b6-solver-panel[data-frame="5"]{--cursor-x:79;--cursor-y:76}.b6-library-panel .motion-stage{height:555px}.b6-tikz-top{height:37px;font-size:10px;padding-inline:15px}.b6-shapes-library{top:37px;left:0;right:0;bottom:auto;width:auto;height:199px;padding:0 14px;border-right:0;border-bottom:1px solid #4a3b50}.b6-library-tabs{font-size:11px;padding-block:12px 10px}.b6-library-tabs strong{padding-bottom:10px;margin-bottom:-11px}.b6-shape-search{position:absolute;right:14px;top:7px;width:135px;padding:5px 7px;margin:0;font-size:13px}.b6-shape-search>span{font-size:8px}.b6-library-group{font-size:9px;margin:13px 0 10px}.b6-library-tiles{gap:7px}.b6-library-tile{padding:4px 2px 6px;gap:4px}.b6-library-tile svg{width:36px;height:36px}.b6-library-tile>span{font-size:8px}.b6-collapsed-group{display:none}.b6-tikz-canvas{left:0;right:0;top:236px;bottom:58px}.b6-force-canvas{padding:2px 15px 10px}.b6-tikz-code{left:0;height:58px;padding:10px 16px}.b6-tikz-code code{font-size:10px;line-height:1.6}.b6-library-panel[data-frame="1"],.b6-library-panel[data-frame="2"]{--cursor-x:15;--cursor-y:29}.b6-library-panel[data-frame="3"],.b6-library-panel[data-frame="4"],.b6-library-panel[data-frame="5"]{--cursor-x:61;--cursor-y:74}.b5-collab-panel .motion-stage{height:535px}.b5-chapter-card{min-height:260px;inset:67px 20px auto 17px}.b5-discussion-card{bottom:17px}.b5-collab-panel:is([data-frame="2"],[data-frame="3"]){--cursor-y:88}.b5-collab-panel:is([data-frame="4"],[data-frame="5"]){--cursor-y:54}.concept-b:lang(ar) .b6-solve-menu{right:13px;left:auto}}

.b6-computing{display:none;font-size:10px;color:#806b75;padding:8px 0 3px}.b6-solver-panel[data-frame="4"] .b6-computing{display:block}.b6-result-note>b{display:block;font-weight:500;margin-bottom:4px}.b6-result-note>p{margin:0}.b6-force-body{fill:#493c49;stroke:#c6a1ba;stroke-width:1.5}.b6-force-vector{stroke:#e7b8a1;stroke-width:2;fill:none;stroke-linejoin:round}.b6-force-resultant{stroke:#b7c5a7;stroke-width:2;fill:none;stroke-linejoin:round}.b6-force-labels{font:italic 17px math;fill:#ead3c4;direction:ltr;unicode-bidi:isolate}.b6-force-labels text:last-child{fill:#c6d4b7;font-size:15px}.b6-force-canvas{direction:ltr;unicode-bidi:isolate}.b6-solver-panel .motion-pointer{transition:transform 450ms cubic-bezier(.4,0,.2,1),opacity 160ms}.b6-library-panel .b6-force-canvas{padding-block:10px}
/* Keep bounded integrals and the provider note inside the anchored card. */
.b6-solver-panel .motion-stage{height:610px}.b6-math-card{top:230px}.b6-math-card math{math-style:compact;line-height:1.15}.b6-card-result{padding-block:12px}.b6-library-tile>span{font-size:9px}.b6-library-panel .b6-tikz-code code::after{content:'…';margin-inline-start:12px;color:#85718e}
@media(max-width:600px){.b6-solver-panel .motion-stage{height:690px}.b6-math-card{top:222px}.b6-source-pane .b5-code-line{font-size:12px}.b6-source-pane .b6-arabic-source code{font-size:14px}.b6-source-pane .b6-arabic-source bdi{font-size:12px}.b6-library-tile>span{font-size:9px}}
@media(max-width:600px){.concept-b:lang(ar) .b6-shape-search{right:auto;left:14px}}
/* V7: a selected scientific construction, edited through its native values. */
.b7-construction-panel .motion-stage{height:650px;background:#242129;border:1px solid #4d404b;border-radius:12px}.b7-tikz-bar{height:47px;display:flex;align-items:center;gap:24px;padding:0 22px;border-bottom:1px solid #4b3e4a;background:#201d24;font-size:11px;color:#baacbf}.b7-tikz-bar strong{font-weight:500;color:#f1e2e8}.b7-tikz-bar>bdi{margin-left:auto;font-size:10px;color:#8f7b98}.b7-library{position:absolute;top:66px;left:17px;width:202px;border:1px solid #5a465e;border-radius:8px;background:#302736;padding:16px;color:#d6bedd;box-shadow:0 10px 25px #110b1826}.b7-library h3,.b7-force-properties h3{font:500 12px/1.5 Geist,'Plex Arabic',sans-serif;letter-spacing:0;margin:0 0 13px;color:#e8d7e9}.b7-library-category{font-size:9px;margin-bottom:13px;color:#b89cc3}.b7-library-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}.b7-library-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;min-height:85px;padding:7px 3px;background:#3a2e42;border:1px solid #62476c;border-radius:5px}.b7-library-item svg{width:39px;height:39px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linejoin:round;stroke-linecap:round}.b7-library-item svg text{font:16px Georgia,serif;stroke:none;fill:currentColor}.b7-library-item>span{font-size:9px;line-height:1.4;text-align:center}.b7-library-item[data-library-item=force]{border-color:#dda88c;background:#654446;color:#ffe0c9}.b7-force-canvas{position:absolute;left:222px;right:240px;top:58px;bottom:179px;direction:ltr}.b7-force-canvas svg{width:100%;height:100%;overflow:visible;direction:ltr;unicode-bidi:isolate}.b7-force-axis{fill:none;stroke:#534450;stroke-width:1}.b7-force-bound{fill:none;stroke:#8a665c;stroke-width:.8;stroke-dasharray:4 5}.b7-force-handles{fill:#40323d;stroke:#d2987d;stroke-width:1}.b7-force-body{fill:#695366;stroke:#d8b0c3;stroke-width:1.5}.b7-force-arrow{stroke:#efb495;stroke-width:2.5;fill:none;stroke-linejoin:round;transition:d 620ms cubic-bezier(.22,1,.36,1)}.b7-arrow-resultant{stroke:#bbd399;stroke-width:3}.b7-force-labels{font:italic 22px math;fill:#f5d7c6;direction:ltr;unicode-bidi:isolate}.b7-force-labels text{transition:transform 620ms cubic-bezier(.22,1,.36,1)}.b7-force-labels [data-force-label=resultant]{fill:#cde3b2;font-size:21px}.b7-force-properties{position:absolute;top:66px;right:17px;width:222px;padding:15px;background:#3c303b;border:1px solid #6d5363;border-radius:8px;box-shadow:0 10px 25px #110b1826;color:#dac2cc}.b7-force-fields{display:grid;gap:9px}.b7-force-field{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:10px}.b7-force-field>bdi{background:#29232c;border:1px solid #6e5264;border-radius:4px;min-width:45px;padding:5px 9px;font:15px/1.4 AtwMono,monospace;text-align:center;color:#eac4b2;transition:border-color .2s,background .2s}.b7-force-scale{display:flex;justify-content:space-between;gap:8px;margin:15px 0 10px;font-size:9px;color:#ab94af}.b7-force-scale bdi{font:10px AtwMono,monospace}.b7-resultant-option{font-size:10px;color:#c6d4b5}.b7-force-readout{border-top:1px solid #6c5362;margin-top:14px;padding-top:12px;display:grid;gap:9px}.b7-force-readout>div{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:10px}.b7-force-readout bdi{font:15px/1.4 AtwMono,monospace;color:#cde3b2;white-space:nowrap}.b7-generated-source{position:absolute;bottom:16px;left:239px;right:17px;min-height:158px;padding:12px 17px;background:#1d1921;border:1px solid #4e3c54;border-radius:7px;color:#bda8c7}.b7-code-heading{display:flex;justify-content:space-between;color:#826a8c;font-size:9px;line-height:1;margin-bottom:10px}.b7-generated-source code{font:11px/1.9 AtwMono,monospace;display:block}.b7-code-row{display:block;white-space:pre}.b7-code-row b{font-weight:400;color:#dca284}.b7-code-row em{font-style:normal;color:#bbcf9d;transition:background .2s}.b7-code-end{font-size:11px;color:#6f5979;position:absolute;bottom:13px;right:17px}.b7-construction-panel:is([data-frame="2"],[data-frame="3"]) [data-force-field=applied]>bdi,.b7-construction-panel:is([data-frame="5"],[data-frame="6"]) [data-force-field=friction]>bdi,.b7-construction-panel:is([data-frame="8"],[data-frame="9"]) [data-force-field=normal]>bdi{border-color:#edb08f;background:#67483e}.b7-construction-panel:is([data-frame="3"],[data-frame="4"]) [data-force-code=applied],.b7-construction-panel:is([data-frame="6"],[data-frame="7"]) [data-force-code=friction],.b7-construction-panel:is([data-frame="9"],[data-frame="10"]) [data-force-code=normal]{background:#a0b17e20}.concept-b:lang(ar) .b7-library,.concept-b:lang(ar) .b7-force-properties{direction:rtl;text-align:start}
/* Five simultaneous source ranges, each with its own remote selection and caret. */
.b7-collaboration{padding-block:100px 60px}.b7-collab-requirement{display:block;font-size:11px;color:var(--muted);margin-top:17px}.b7-collab-panel .motion-stage{height:665px;background:#24202a;border:1px solid #514052}.b7-collab-panel>.motion-stage>.motion-pointer{display:none}.b7-collab-bar{height:46px;display:flex;align-items:center;justify-content:space-between;padding:0 25px;border-bottom:1px solid #4b394f;font-size:11px;color:#c4accd;background:#2a222f}.b7-collab-bar>span{color:#9e84aa;font-size:10px}.b7-presence-list{display:flex;align-items:center;gap:12px;padding:17px 26px;border-bottom:1px solid #392e40;background:#211c26}.b7-person{display:flex;align-items:center;gap:7px;font-size:10px;color:var(--person-color)}.b7-person>span{width:26px;height:26px;display:grid;place-items:center;background:color-mix(in srgb,var(--person-color) 18%,#241e29);border:1px solid color-mix(in srgb,var(--person-color) 50%,transparent);border-radius:6px;font-size:11px}.b7-person>b{font-weight:450}.b7-shared-source{position:absolute;top:110px;left:0;right:0;bottom:0;padding:11px 27px 15px}.b7-source-passage{position:relative;min-height:105px;padding:9px 0 5px;border-bottom:1px solid #ffffff05}.b7-source-context,.b7-source-authored{display:grid;grid-template-columns:22px minmax(0,1fr);column-gap:20px;align-items:start}.b7-source-context{line-height:18px;font-size:10px;color:#85738e}.b7-source-context>span,.b7-source-authored>span{font:9px/24px AtwMono,monospace;color:#6e5a7b;text-align:end}.b7-source-context code{font:11px/24px AtwMono,AtwNotoArabic,monospace;color:#a08cab}.b7-source-context code b{font-weight:400;color:#bf8b79}.b7-source-context code i{font-style:normal;color:#755e80}.b7-source-authored{margin-top:15px}.b7-authored-text{position:relative;min-width:0;width:fit-content;max-width:100%;font:14px/26px AtwMono,AtwNotoArabic,monospace;color:#decdda;border-inline-end:2px solid var(--person-color);padding-inline-end:3px;transition:background .25s}.b7-authored-text[dir=rtl]{margin-left:auto;font-family:AtwNotoArabic,sans-serif;font-size:16px;direction:rtl;text-align:right;border-inline-end:2px solid var(--person-color)}.b7-authored-text code{font:inherit;white-space:pre-wrap;overflow-wrap:anywhere;direction:inherit}.b7-authored-text code b{color:#e6b49a;font-weight:400}.b7-authored-text code i{color:#b4a1bf;font-style:normal}.b7-authored-text code em{font-style:normal;color:#bcd09f}.b7-authored-after{display:none}.b7-remote-caret{position:absolute;right:0;top:0;height:26px;width:0;color:var(--person-color);transition:right .45s,left .45s}.b7-remote-caret>b{position:absolute;bottom:calc(100% + 1px);right:0;padding:2px 6px;background:var(--person-color);border-radius:3px 3px 0 0;font:500 9px/1.3 Geist,'Plex Arabic',sans-serif;color:#2d2031;white-space:nowrap}.b7-authored-text[dir=rtl] .b7-remote-caret{right:auto;left:0}.b7-authored-text[dir=rtl] .b7-remote-caret>b{right:auto;left:0}.b7-source-passage[data-selecting=true] .b7-authored-text{background:color-mix(in srgb,var(--person-color) 23%,transparent)}.b7-source-passage[data-edited=true] .b7-authored-before{display:none}.b7-source-passage[data-edited=true] .b7-authored-after{display:inline}.b7-source-passage[data-edited=true] .b7-authored-text{background:color-mix(in srgb,var(--person-color) 7%,transparent)}.b7-collab-panel[data-frame="1"] .b7-remote-caret{transform:translateX(-12px)}.b7-remote-caret{transition:transform .45s}.concept-b:lang(ar) .b7-collab-bar,.concept-b:lang(ar) .b7-presence-list{direction:rtl}
@media(min-width:1000px){.b7-shared-source{right:215px;padding-inline-end:30px}.b7-presence-list{position:absolute;right:0;top:46px;bottom:0;width:215px;padding:28px 21px;display:flex;flex-direction:column;align-items:flex-start;gap:35px;border:0;border-left:1px solid #4b394f;background:#2d2432}.b7-person{gap:12px;font-size:13px}.b7-person>span{width:33px;height:33px;font-size:13px}.b7-shared-source{top:46px;padding-top:24px}.b7-source-passage{min-height:116px}.b7-source-authored{margin-top:22px}.b7-authored-text{font-size:15px;line-height:27px}.b7-authored-text[dir=rtl]{font-size:18px}.b7-remote-caret>b{font-size:10px}}
@media(max-width:1100px){.b7-library{width:178px;left:13px;padding:12px}.b7-force-properties{width:203px;right:13px;padding:12px}.b7-force-canvas{left:185px;right:212px}.b7-generated-source{left:200px;right:13px}.b7-force-field{font-size:9px}.b7-force-field>bdi{font-size:14px;min-width:39px}.b7-force-readout bdi{font-size:13px}}
@media(max-width:850px){.b7-construction-panel .motion-stage{height:720px}.b7-library{top:60px;width:160px}.b7-library-item{min-height:75px}.b7-library-item svg{width:33px;height:33px}.b7-library-item>span{font-size:8px}.b7-force-properties{width:183px}.b7-force-canvas{left:170px;right:183px;top:70px;bottom:207px}.b7-generated-source{left:20px;right:20px;bottom:17px;min-height:158px}.b7-generated-source code{font-size:11px}.b7-force-readout>div{font-size:9px}.b7-force-readout bdi{font-size:12px}.b7-collaboration{padding-block:75px 45px}.b7-collab-panel .motion-stage{height:665px}.b7-person{font-size:9px}.b7-presence-list{gap:13px}.b7-authored-text{font-size:13px}}
@media(max-width:600px){.b7-construction-panel .motion-stage{height:845px}.b7-tikz-bar{height:40px;padding-inline:14px;gap:12px;font-size:10px}.b7-tikz-bar>span{display:none}.b7-tikz-bar>bdi{font-size:9px}.b7-library{left:11px;right:11px;top:52px;width:auto;padding:10px 11px;box-shadow:none}.b7-library h3{font-size:11px;margin-bottom:9px}.b7-library-category{position:absolute;top:12px;right:12px;font-size:8px;margin:0}.b7-library-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}.b7-library-item{min-height:67px;padding:5px 2px;gap:4px}.b7-library-item svg{width:29px;height:29px}.b7-library-item>span{font-size:8px}.b7-force-properties{top:182px;left:11px;right:11px;width:auto;padding:11px 12px;box-shadow:none}.b7-force-properties h3{display:none}.b7-force-fields{grid-template-columns:1fr 1fr;gap:8px 12px}.b7-force-field{font-size:8px;gap:5px}.b7-force-field>bdi{font-size:12px;min-width:32px;padding:4px 6px}.b7-force-scale{font-size:8px;margin:9px 0 0}.b7-force-scale bdi{font-size:9px}.b7-resultant-option{display:none}.b7-force-readout{display:flex;justify-content:space-between;gap:10px;margin-top:9px;padding-top:9px}.b7-force-readout>div{gap:7px;font-size:8px}.b7-force-readout bdi{font-size:12px}.b7-force-canvas{left:8px;right:8px;top:338px;bottom:172px}.b7-force-labels{font-size:24px}.b7-force-labels [data-force-label=resultant]{font-size:23px}.b7-generated-source{left:11px;right:11px;bottom:12px;min-height:148px;padding:11px 12px}.b7-generated-source code{font-size:9.5px;line-height:1.95}.b7-code-heading{font-size:8px;margin-bottom:10px}.b7-code-end{font-size:10px;bottom:10px;right:12px}.b7-collaboration{padding-block:60px 30px}.b7-collab-panel .motion-stage{height:700px}.b7-collab-bar{padding-inline:14px;font-size:10px;height:41px}.b7-collab-bar>span{font-size:9px}.b7-presence-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:5px;padding:12px 10px}.b7-person{flex-direction:column;gap:4px;font-size:9px}.b7-person>span{width:24px;height:24px;font-size:10px}.b7-shared-source{top:110px;padding:8px 12px 10px}.b7-source-passage{min-height:114px;padding-top:9px}.b7-source-context,.b7-source-authored{grid-template-columns:15px minmax(0,1fr);gap:9px}.b7-source-context code{font-size:9.5px;line-height:24px}.b7-source-context>span,.b7-source-authored>span{font-size:8px}.b7-source-authored{margin-top:19px}.b7-authored-text{font-size:11px;line-height:23px}.b7-authored-text[dir=rtl]{font-size:14px;line-height:25px}.b7-remote-caret>b{font-size:9px}.b7-collab-requirement{font-size:10px;line-height:1.8;margin-top:13px}.concept-b:lang(ar) .b7-library-category{right:auto;left:12px}}
.b7-authored-text,.b7-authored-text[dir=rtl]{border-inline-end:0}.b7-remote-caret{border-left:2px solid var(--person-color)}.b7-local-caret{border-color:#f0e2ea}.b7-person>b{display:flex;align-items:center;gap:6px}.b7-person small{font-size:9px;color:#9e8aab;font-weight:400}.b7-collab-panel[data-motion-tail=true] .b7-remote-caret{opacity:0}.b7-remote-caret{transition:opacity .16s}.b7-collab-panel[data-frame="1"] .b7-remote-caret{transform:none}
@media(max-width:600px){.b7-force-field{font-size:9px}.b7-force-field>bdi{font-size:14px}.b7-force-readout>div{font-size:9px}.b7-force-readout bdi{font-size:13px}.b7-force-canvas{top:355px}.b7-person>b{gap:3px}.b7-person small{font-size:7px}}
/* V8: three fixed equation identities; the card follows the working source. */
.b8-solver-panel.b6-solver-panel .motion-stage{height:700px}.b8-solver-panel .b6-filebar>span:first-child{display:flex;align-items:center;justify-content:space-between;padding-block:6px}.b8-compile{font-size:10px;background:#a75540;color:#fff1e8;padding:5px 9px;border-radius:4px}.b8-solver-panel .b6-source-pane{padding-top:20px}.b8-equation-list{margin-top:12px}.b8-solver-panel .b8-equation-row{position:relative;min-height:40px;align-items:center;border:1px solid transparent;padding:4px 25px 4px 0;margin-block:3px;transition:background .25s,border-color .25s}.b8-equation-row code{min-width:0;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px!important}.b8-equation-number{position:absolute;right:6px;top:10px;color:#8c798b;font:10px AtwMono,monospace}.b8-equation-inserted{display:none;color:#cbd9b4}.b8-equation-row[data-inserted=true] .b8-equation-original{display:none}.b8-equation-row[data-inserted=true] .b8-equation-inserted{display:inline}.b8-equation-row[data-active=true]{background:#d9997d0b;border-color:#c58c7040}.b8-equation-row[data-inserted=true]{background:#a5bd810b}.b8-solver-panel.b6-solver-panel .b6-math-card{top:300px;opacity:0;transform:translateY(-5px)}.b8-solver-panel.b6-solver-panel:is([data-solver-phase=card],[data-solver-phase=menu],[data-solver-phase=operation],[data-solver-phase=computing],[data-solver-phase=result]) .b6-math-card{opacity:1;transform:none}.b8-solver-panel.b6-solver-panel .b6-solve-menu,.b8-solver-panel.b6-solver-panel .b6-card-result{opacity:0;transform:translateY(-5px)}.b8-solver-panel.b6-solver-panel:is([data-solver-phase=menu],[data-solver-phase=operation]) .b6-solve-menu,.b8-solver-panel.b6-solver-panel[data-solver-phase=result] .b6-card-result{opacity:1;transform:none}.b8-solver-panel.b6-solver-panel .b6-example{display:none}.b8-solver-panel.b6-solver-panel[data-active-equation="0"] .b6-example-0,.b8-solver-panel.b6-solver-panel[data-active-equation="1"] .b6-example-1,.b8-solver-panel.b6-solver-panel[data-active-equation="2"] .b6-example-2{display:contents}.b8-solver-panel.b6-solver-panel[data-active-equation="1"] .b6-result-note,.b8-solver-panel.b6-solver-panel[data-active-equation="2"] .b6-detected-bounds{display:block}.b8-solver-panel.b6-solver-panel .b6-computing{display:none}.b8-solver-panel.b6-solver-panel[data-solver-phase=computing] .b6-computing{display:block}.b8-solver-panel.b6-solver-panel [data-operation]{background:transparent;color:inherit}.b8-solver-panel[data-active-equation="0"] [data-operation=evaluate],.b8-solver-panel[data-active-equation="1"] [data-operation=solve],.b8-solver-panel[data-active-equation="2"] [data-operation=integrate]{background:#b86148;color:#fff4e8}.b8-solver-panel .b6-pdf-page{padding-inline:15px}.b8-solver-panel .b6-pdf-page h3{font-size:22px}.b8-manuscript-row{position:relative;min-height:86px;display:flex;align-items:center;justify-content:center;border-block-end:1px solid #ddd0c370;padding-right:16px}.b8-manuscript-row math{font-size:20px;math-style:compact;line-height:1.5}.b8-manuscript-row>span{position:absolute;right:0;top:50%;font:9px Georgia,serif}.b8-manuscript-result{display:none}.b8-solver-panel[data-compiled=true] .b8-manuscript-original{display:none}.b8-solver-panel[data-compiled=true] .b8-manuscript-result{display:block}.b8-paper-prose{margin-top:25px;font-size:10px;line-height:1.8;color:#847069}.b8-paper-prose p[lang=ar]{font-size:13px;margin-top:17px!important}.b8-solver-panel[data-solver-phase=compile] .b8-compile{background:#d48a6a}.b8-solver-panel .b6-card-result{padding-top:10px;padding-bottom:10px}.b8-solver-panel .b6-result-formula{padding-block:9px;min-height:48px}.b8-solver-panel .b6-result-note{font-size:9px;line-height:1.5}.b8-solver-panel .b6-card-actions{margin-top:8px}
/* The table keeps one heading node and a fixed grid from start to finish. */
.b8-table-panel .motion-stage{height:560px}.b8-table-sheet{position:absolute;left:26px;right:26px;top:57px;padding:18px 22px;background:#fff8f0;border:1px solid #ca9f87;border-radius:5px;color:#49372d;box-shadow:0 10px 30px #60332315}.b8-table-grid{border:1px solid #a78b76;font:14px/1.5 Georgia,'Amiri',serif;color:#49372d}.b8-table-heading{position:relative;height:37px;border-bottom:1px solid #a78b76;display:grid;grid-template-columns:repeat(3,1fr);align-items:center;font:inherit;overflow:hidden}.b8-table-heading>span{grid-column:1;white-space:nowrap;text-align:left;padding-inline:8px;position:relative;z-index:1;justify-self:start;font:inherit}.b8-table-heading>i{position:absolute;left:33.333%;top:0;bottom:0;border-left:1px solid #a78b76}.b8-table-heading>i:last-child{left:66.666%}.b8-table-grid .b5-paper-table{font:inherit;table-layout:fixed;border-collapse:collapse}.b8-table-grid .b5-paper-table th,.b8-table-grid .b5-paper-table td{padding:5px;border:0;border-right:1px solid #a78b76;border-bottom:1px solid #a78b76;font:inherit}.b8-table-grid .b5-paper-table tr>*:last-child{border-right:0}.b8-table-grid .b5-paper-table tbody tr:last-child>*{border-bottom:0}.b8-table-grid .b5-paper-table th{font-style:italic}.b8-table-panel:is([data-table-state=merged],[data-table-state=centered]) .b8-table-heading>i{display:none}.b8-table-panel:is([data-table-state=merged],[data-table-state=centered]) .b8-table-heading>span{grid-column:1/-1}.b8-table-panel[data-table-state=centered] .b8-table-heading>span{justify-self:center}.b8-table-selection{position:absolute;inset:16px 20px auto;height:41px;border:2px solid #b65a3e;pointer-events:none}.b8-table-panel[data-table-state=centered] .b8-table-selection{opacity:0}.b8-table-toolbar{position:absolute;left:26px;right:26px;top:285px;display:flex;gap:8px;padding:8px;background:#3b2e32;border:1px solid #7e5751;border-radius:6px;box-shadow:0 10px 25px #43231e20;font:11px Geist,'Plex Arabic',sans-serif;z-index:3}.b8-table-toolbar>span{padding:8px 12px;border-radius:4px;white-space:nowrap}.b8-table-panel:is([data-frame="2"],[data-frame="3"]) [data-table-merge],.b8-table-panel:is([data-frame="4"],[data-frame="5"]) [data-table-center]{background:#a6553f;color:#fff0e4}.b8-table-output{position:absolute;left:26px;right:26px;top:356px;padding:12px 22px;background:#fff8f0;border:1px solid #ca9f87;border-radius:5px;color:#49372d}.b8-output-label{font:9px Geist,sans-serif;display:block;color:#927765;margin-bottom:8px}.b8-table-output .b5-paper-table tbody tr{display:none}.b8-table-output .b5-paper-table thead th{border-bottom:0}.b8-table-panel .b5-table-code{height:65px}.b8-table-panel .b5-table-code code{font-size:11px;overflow-wrap:anywhere;white-space:normal}
/* Staggered source writing and a source-anchored review thread. */
.b8-collab-panel .motion-stage{height:730px}.b8-collab-panel .b7-presence-list{position:absolute;inset:46px 0 auto;width:auto;height:76px;display:flex;flex-direction:row;align-items:center;justify-content:space-between;padding:15px 25px;gap:18px;border:0;border-bottom:1px solid #49394e}.b8-collab-panel .b7-person{font-size:11px;gap:8px}.b8-collab-panel .b7-person>b{display:flex;flex-direction:column;align-items:flex-start;gap:2px}.b8-collab-panel .b7-person small{font-size:8px}.b8-collab-panel .b7-person>span{width:29px;height:29px;font-size:11px}.b8-collab-panel .b7-shared-source{top:122px;right:37%;padding:27px 25px}.b8-collab-panel .b7-source-passage{min-height:135px}.b8-collab-panel .b7-authored-text{width:100%;font-size:14px;line-height:27px;min-height:54px;padding:0;background:transparent}.b8-collab-panel .b7-authored-text[dir=rtl],.b8-collab-panel .b7-authored-text[dir=rtl] code{font-family:AtwNotoArabic,sans-serif;font-size:17px;direction:rtl;unicode-bidi:isolate;text-align:right}.b8-collab-panel .b7-source-authored{margin-top:21px}.b8-collab-panel .b7-remote-caret{height:22px;opacity:.35;transition:opacity .2s}.b8-collab-panel [data-writing=true] .b7-remote-caret{opacity:1}.b8-collab-panel .b7-remote-caret>b{font-size:9px}.b8-reviewer-caret{position:absolute;left:0;top:0;height:25px;border-left:2px solid #e1ca8b;opacity:0}.b8-reviewer-caret>b{position:absolute;bottom:calc(100% + 1px);left:0;background:#e1ca8b;color:#30252c;padding:2px 6px;font:500 9px/1.3 Geist,sans-serif;border-radius:3px 3px 0 0}.b8-collab-panel:not([data-review-state=writing]) [data-passage=maya] .b7-authored-text{background:#d9bc6a13}.b8-collab-panel:not([data-review-state=writing]) .b8-reviewer-caret{opacity:1}.b8-review-thread{position:absolute;top:147px;right:23px;width:calc(37% - 31px);background:#3a2d3c;border:1px solid #70566e;border-radius:8px;padding:17px;box-shadow:0 15px 35px #130d1b30;opacity:.4;transform:translateX(4px);transition:opacity .3s,transform .35s;color:#e5d5df;direction:ltr;text-align:left}.b8-thread-top{display:flex;align-items:center;justify-content:space-between;font-size:11px;gap:10px}.b8-thread-top>strong{font-weight:550}.b8-thread-top>span{font-size:9px;color:#cdb58f}.b8-review-thread blockquote{font:12px/1.7 AtwMono,monospace;color:#cdbca0;border-left:2px solid #ae8b55;padding:5px 0 5px 10px;margin:17px 0 13px}.b8-comment{font-size:12px;line-height:1.7;opacity:0;transition:opacity .25s}.b8-comment>div{display:flex;gap:10px;align-items:baseline}.b8-comment b{font-size:11px;font-weight:550;color:#e5cd95}.b8-comment small{font-size:8px;color:#a18ba9}.b8-comment p{margin:6px 0 14px}.b8-reply{border-top:1px solid #70566e60;padding-top:12px}.b8-reply b{color:#efab8c}.b8-suggestion{border-top:1px solid #70566e60;padding-top:13px;opacity:0;transition:opacity .3s}.b8-suggestion>div{display:flex;justify-content:space-between;font-size:10px;color:#e5cd95;margin-bottom:11px}.b8-suggestion del,.b8-suggestion ins{display:block;font:11px/1.8 AtwMono,monospace;text-decoration:none;padding:7px 9px}.b8-suggestion del{background:#a45c6b20;color:#d5a5ab;text-decoration:line-through}.b8-suggestion ins{background:#a6c78118;color:#bdd5a7;margin-top:5px}.b8-review-action{display:inline-block;padding:7px 11px;background:#bd7959;color:#fff0df;font:10px/1.4 Geist,'Plex Arabic',sans-serif;border-radius:4px;margin-top:13px}.b8-applied{display:none;font:10px/1.5 Geist,'Plex Arabic',sans-serif;color:#bfd6a5;margin-top:12px}.b8-resolve{margin-top:13px;background:#59405d;opacity:0}.b8-collab-panel:not([data-review-state=writing]):not([data-review-state=selected]) .b8-review-thread{opacity:1;transform:none}.b8-collab-panel:not([data-review-state=writing]):not([data-review-state=selected]) [data-comment]{opacity:1}.b8-collab-panel:is([data-review-state=reply],[data-review-state=suggestion],[data-review-state=apply-approach],[data-review-state=applied],[data-review-state=resolve-approach],[data-review-state=resolved]) [data-reply]{opacity:1}.b8-collab-panel:is([data-review-state=suggestion],[data-review-state=apply-approach],[data-review-state=applied],[data-review-state=resolve-approach],[data-review-state=resolved]) [data-suggestion]{opacity:1}.b8-collab-panel:is([data-review-state=applied],[data-review-state=resolve-approach],[data-review-state=resolved]) .b8-applied{display:block}.b8-collab-panel:is([data-review-state=applied],[data-review-state=resolve-approach],[data-review-state=resolved]) [data-apply]{visibility:hidden;position:absolute}.b8-collab-panel:is([data-review-state=applied],[data-review-state=resolve-approach]) [data-resolve]{opacity:1}.b8-collab-panel.b7-collab-panel>.motion-stage>.motion-pointer{display:block;opacity:0}.b8-collab-panel:is([data-review-state=apply-approach],[data-review-state=applied],[data-review-state=resolve-approach],[data-review-state=resolved])>.motion-stage>.motion-pointer{opacity:1}.concept-b:lang(ar) .b8-review-thread{direction:rtl;text-align:right}.concept-b:lang(ar) .b8-review-thread blockquote,.concept-b:lang(ar) .b8-suggestion del,.concept-b:lang(ar) .b8-suggestion ins{direction:ltr;text-align:left;unicode-bidi:isolate}
@media(max-width:1100px){.b8-solver-panel .b8-equation-row code{font-size:12px!important}.b8-solver-panel .b6-math-card{width:62%;left:6%}.b8-solver-panel .b6-pdf-strip{width:24%}.b8-manuscript-row math{font-size:17px}.b8-collab-panel .b7-shared-source{right:40%;padding-inline:18px}.b8-review-thread{width:calc(40% - 22px);right:15px;padding:14px}.b8-collab-panel .b7-authored-text{font-size:12px}.b8-collab-panel .b7-person{font-size:10px;gap:6px}.b8-collab-panel .b7-person small{font-size:7px}.b8-collab-panel .b7-presence-list{gap:10px;padding-inline:17px}.b8-collab-panel .b7-source-context,.b8-collab-panel .b7-source-authored{gap:12px}}
@media(max-width:700px){.b8-collab-panel .motion-stage{height:1120px}.b8-collab-panel .b7-presence-list{padding:12px;height:83px;gap:4px}.b8-collab-panel .b7-person{flex-direction:column;gap:5px;font-size:10px}.b8-collab-panel .b7-person>b{align-items:center}.b8-collab-panel .b7-person>span{width:25px;height:25px}.b8-collab-panel .b7-shared-source{top:129px;left:0;right:0;bottom:auto;padding:12px 17px}.b8-collab-panel .b7-source-passage{min-height:113px}.b8-collab-panel .b7-source-authored{margin-top:17px}.b8-collab-panel .b7-authored-text{font-size:12px;line-height:24px;min-height:48px}.b8-collab-panel .b7-authored-text[dir=rtl],.b8-collab-panel .b7-authored-text[dir=rtl] code{font-size:16px;line-height:27px}.b8-review-thread{top:610px;left:16px;right:16px;width:auto;padding:16px}.b8-review-thread blockquote{font-size:11px;margin-block:12px}.b8-comment{font-size:12px;line-height:1.7}.b8-comment p{margin-bottom:10px}.b8-suggestion del,.b8-suggestion ins{font-size:10px;line-height:1.7}.b8-suggestion{padding-top:10px}.b8-suggestion>div{margin-bottom:8px}}
@media(max-width:600px){.b8-solver-panel.b6-solver-panel .motion-stage{height:860px}.b8-solver-panel .b6-filebar{display:grid;grid-template-columns:1fr;height:37px}.b8-solver-panel .b6-filebar>span:first-child{padding:5px 12px}.b8-compile{font-size:9px;padding:4px 7px}.b8-solver-panel .b6-source-pane{padding:13px 11px;top:37px;right:0}.b8-solver-panel .b6-source-pane>.b5-code-line{font-size:11px;line-height:25px}.b8-solver-panel .b6-arabic-source code{font-size:14px}.b8-equation-list{margin-top:8px}.b8-solver-panel .b8-equation-row{min-height:46px;padding-right:23px;margin-block:2px;gap:8px;align-items:center;line-height:22px}.b8-solver-panel .b8-equation-row code{font-size:11px!important;line-height:22px}.b8-equation-number{font-size:8px;right:4px;top:15px}.b8-solver-panel.b6-solver-panel .b6-math-card{top:313px;left:10px;right:10px;width:auto;padding:11px 12px 9px}.b8-solver-panel .b6-pdf-strip{top:auto;bottom:0;left:0;right:0;width:auto;height:178px;padding:10px}.b8-solver-panel .b6-pdf-page{display:block;height:158px;padding:10px 14px}.b8-solver-panel .b6-pdf-page h3{font-size:15px;margin-bottom:3px}.b8-solver-panel .b6-pdf-page>p[lang=ar]{display:none}.b8-solver-panel .b6-pdf-page h4{display:none}.b8-manuscript-row{min-height:36px;justify-content:center;border-bottom:0;padding-right:20px}.b8-manuscript-row math{font-size:17px;line-height:1.3}.b8-manuscript-row>span{top:11px;font-size:8px}.b8-paper-prose{display:none}.b8-solver-panel .b6-card-result{padding:10px 12px}.b8-solver-panel .b6-result-note{font-size:9px}.b8-solver-panel .b6-card-actions>span{font-size:9px}.b8-table-panel .motion-stage{height:545px;padding:17px 15px}.b8-table-sheet{left:15px;right:15px;top:49px;padding:16px 13px}.b8-table-grid{font-size:12px}.b8-table-heading{height:35px}.b8-table-heading>span{padding-inline:5px}.b8-table-grid .b5-paper-table th,.b8-table-grid .b5-paper-table td{padding:5px}.b8-table-toolbar{left:15px;right:15px;top:273px;font-size:10px;padding:7px;gap:6px}.b8-table-toolbar>span{padding:8px}.b8-table-output{left:15px;right:15px;top:339px;padding:11px 13px}.b8-table-selection{inset:14px 11px auto;height:39px}.b8-table-panel .b5-table-code code{font-size:9px;line-height:1.8}.b8-table-panel .b5-table-code{padding-inline:15px;height:65px}}
@media(prefers-reduced-motion:reduce){.b8-solver-panel *,.b8-table-panel *,.b8-collab-panel *{transition:none!important}.b8-collab-panel>.motion-stage>.motion-pointer{display:none!important}}
.b8-table-panel .motion-stage{height:665px}.b8-table-output .b5-paper-table tbody tr{display:table-row}.b8-table-output .b5-paper-table thead th{border-bottom:1px solid #a78b76}.b8-review-check{display:flex;align-items:center;gap:8px;font:9px/1.6 Geist,'Plex Arabic',sans-serif;color:#bdadbf;margin-top:13px}.b8-review-check>i{width:13px;height:13px;border:1px solid #957f9d;border-radius:2px;display:grid;place-items:center;font:10px Geist,sans-serif;flex:none}.b8-collab-panel:is([data-review-state=reviewed],[data-review-state=apply-approach],[data-review-state=applied]) .b8-review-check>i{background:#a27757;color:#fff5df;border-color:#c99771}.b8-collab-panel:is([data-review-state=reviewed],[data-review-state=apply-approach],[data-review-state=applied]) .b8-review-check>i::after{content:'✓'}.b8-collab-panel:is([data-review-state=comment],[data-review-state=reply],[data-review-state=review-approach],[data-review-state=reviewed],[data-review-state=apply-approach],[data-review-state=applied]) [data-suggestion]{opacity:1}.b8-collab-panel:is([data-review-state=review-approach],[data-review-state=reviewed]) [data-reply]{opacity:1}.b8-collab-panel.b7-collab-panel:is([data-review-state=review-approach],[data-review-state=reviewed])>.motion-stage>.motion-pointer{opacity:1}.b8-collab-panel:is([data-review-state=applied]) [data-apply]{visibility:hidden;position:static;display:inline-block}.b8-collab-panel .b8-applied{position:absolute;bottom:21px;inset-inline-start:17px}.b8-review-thread{padding-bottom:18px}.b8-collab-panel .b7-authored-text[dir=ltr] code{direction:ltr;unicode-bidi:isolate}
@media(max-width:600px){.b8-table-panel .motion-stage{height:625px}}
.b8-source-context{margin-top:24px;opacity:.72}.b8-source-context .b5-code-line{font-size:13px!important;line-height:28px!important;min-height:28px!important}.b8-source-context code{white-space:pre-wrap;overflow-wrap:anywhere}.b8-solver-panel .b8-source-context .b5-code-line:nth-child(n){display:flex}
@media(max-width:600px){.b8-source-context{margin-top:24px}.b8-source-context .b5-code-line{font-size:11px!important;line-height:26px!important;min-height:26px!important}.b8-source-context .b5-code-line:has(code:empty){display:none!important}}
.b8-collab-panel [data-selecting=true] .b7-authored-text{background:#9ebddc23}.b8-table-panel .motion-pointer{transition:transform 400ms cubic-bezier(.4,0,.2,1),opacity 160ms}
/* Ignite: the paper is the product, with a neutral PDF beside the table tools. */
.b5-intro{max-width:930px}.b5-intro h1{font-size:clamp(47px,4.6vw,66px);line-height:1.06;letter-spacing:-.058em}.b5-intro>p:not(.b5-category){max-width:650px;font-size:16px;line-height:1.7;margin-bottom:22px}.concept-b:lang(ar) .b5-intro h1{line-height:1.35;letter-spacing:0}.concept-b:lang(ar) .b5-intro>p:not(.b5-category){max-width:680px;line-height:1.9}.b8-table-panel .motion-stage{height:690px}.b8-table-sheet{background:#f6f5f3;border-color:#b6aaa3}.b8-table-grid{border-color:#3d3c3c;color:#242427}.b8-table-heading,.b8-table-heading>i,.b8-table-grid .b5-paper-table th,.b8-table-grid .b5-paper-table td,.b8-table-output .b5-paper-table thead th{border-color:#3d3c3c}.b8-table-toolbar{top:274px}.b8-table-output{top:338px;padding:0;background:#d9d9dc;border:1px solid #b4b4bb;border-radius:6px;color:#242427;overflow:hidden;box-shadow:0 8px 22px #46312d14}.b9-pdf-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 14px;font:10px/1.3 Geist,'Plex Arabic',sans-serif;color:#57565d;background:#e8e8eb;border-bottom:1px solid #c4c4ca}.b9-pdf-toolbar>span{font-size:9px;color:#7c7b83}.b9-table-pdf-page{margin:12px;padding:10px;background:#fff;color:#252529;box-shadow:0 2px 7px #42424d14}.b9-table-pdf-page>p{font:11px/1.5 Georgia,'Amiri',serif;text-align:center;color:#44434a;margin:12px 0 7px}.b9-table-pdf-page .b8-table-grid{background:#fff}.concept-b:lang(ar) .b9-pdf-toolbar{direction:rtl}.concept-b:lang(ar) .b9-table-pdf-page>p{direction:rtl}.b6-result-heading{min-height:14px}
@media(max-width:850px){.b5-intro h1{font-size:clamp(44px,6vw,58px)}}
@media(max-width:600px){.b5-hero{padding-top:25px}.b5-intro h1{font-size:40px;line-height:1.1;margin-bottom:17px}.b5-intro>p:not(.b5-category){max-width:340px;font-size:13px;line-height:1.8;margin-bottom:20px}.concept-b:lang(ar) .b5-intro h1{font-size:36px;line-height:1.4}.concept-b:lang(ar) .b5-intro>p:not(.b5-category){font-size:13px;line-height:1.9}.b8-table-panel .motion-stage{height:645px}.b8-table-toolbar{top:252px}.b8-table-output{top:313px;padding:0}.b9-pdf-toolbar{font-size:9px;padding:9px 11px}.b9-pdf-toolbar>span{font-size:8px}.b9-table-pdf-page{margin:8px;padding:5px}.b9-table-pdf-page>p{font-size:10px;margin:10px 0 7px}}
.b8-table-panel[data-table-pdf-ready=false] [data-table-output] .b8-table-heading>i{display:block}.b8-table-panel[data-table-pdf-ready=false] [data-table-output] .b8-table-heading>span{grid-column:1;justify-self:start}.b8-table-panel:is([data-frame="6"],[data-frame="7"]) [data-table-preview-action]{background:#a6553f;color:#fff0e4}.b8-table-toolbar [data-table-preview-action]{margin-left:auto;border:1px solid #ad7d6b;padding-block:7px}.b8-table-panel[data-frame="8"] .b9-table-pdf-page{animation:b9-pdf-refresh 350ms ease-out both}@keyframes b9-pdf-refresh{from{opacity:.7}to{opacity:1}}
@media(max-width:600px){.b8-table-toolbar{gap:4px;padding:7px 6px}.b8-table-toolbar>span{padding-inline:7px}.b8-table-toolbar [data-table-preview-action]{padding-inline:7px;font-size:9px}}
@media(prefers-reduced-motion:reduce){.b8-table-panel .b9-table-pdf-page{animation:none!important}}
@media(max-width:600px){.concept-b:lang(ar) .b5-intro h1{font-size:34px}}
/* Pointer percentages and container units share the same unpadded stage. */
.b8-table-panel .motion-stage{padding:0}.b8-table-panel .b5-table-title{position:absolute;top:20px;left:25px;right:25px;padding:0}
@media(max-width:600px){.b8-table-panel .b5-table-title{top:17px;left:20px;right:20px}}
/* V10: automatic document preview, after each completed source insertion. */
.b10-auto-compile{display:flex;align-items:center;gap:9px;font:10px/1.4 Geist,'Plex Arabic',sans-serif;color:#b4a5b9}.b10-auto-compile b{font-weight:500;color:#c5d5ad;min-width:18px}.b8-solver-panel[data-auto-compiling=true] .b10-auto-compile b{color:#f1ba98}.b8-solver-panel .b8-equation-row{padding-right:9px}.b8-manuscript-row{padding-right:0}.b8-manuscript-row[data-inserted=true] .b8-manuscript-original{display:none}.b8-manuscript-row[data-inserted=true] .b8-manuscript-result{display:block;animation:b10-pdf-arrive 300ms ease-out both}@keyframes b10-pdf-arrive{from{opacity:.55}to{opacity:1}}
/* A sheet editor: cell coordinates, selection and a separate compiled page. */
.b8-table-panel .motion-stage{height:730px;background:#2b252e;border:1px solid #55414e;border-radius:10px}.b8-table-panel .b5-table-title{top:0;left:0;right:0;height:41px;display:flex;align-items:center;padding:0 20px;background:#211c25;border-bottom:1px solid #55414e;color:#dbccd9}.b8-table-panel .b5-table-title>bdi{color:#928296;font-size:10px}.b8-table-toolbar{top:49px;left:14px;right:14px;padding:7px 8px;background:#362b37;border:1px solid #5c4758;box-shadow:none;border-radius:5px;gap:8px}.b8-table-toolbar>span{padding:7px 10px;font-size:11px}.b8-table-toolbar [data-table-preview-action]{padding-block:6px}.b8-table-sheet{top:108px;left:20px;right:20px;padding:10px;background:#f6f5f3;border:1px solid #a79f9f;border-radius:4px;box-shadow:none}.b10-grid-address{display:flex;align-items:center;gap:13px;height:30px;margin-bottom:7px;background:#fff;border:1px solid #d0cbca;color:#5f565d;font:11px/1.4 Geist,'Plex Arabic',sans-serif}.b10-grid-address>bdi{font:10px AtwMono,monospace;display:grid;place-items:center;align-self:stretch;min-width:63px;background:#e9e5e5;border-right:1px solid #d0cbca;color:#755143}.b10-grid-address>span{font-size:11px}.b10-grid-shell{display:grid;grid-template-columns:30px minmax(0,1fr);grid-template-rows:26px auto;direction:ltr}.b10-grid-corner{grid-column:1;grid-row:1;background:#e3dddd;border:1px solid #c0b5b7;border-right:0;border-bottom:0}.b10-column-heads{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-column:2;grid-row:1;background:#e9d9d2;border:1px solid #bfa99e;border-bottom:0;color:#684439;font:10px/25px AtwMono,monospace;text-align:center}.b10-column-heads>span{border-right:1px solid #bfa99e}.b10-column-heads>span:last-child{border:0}.b10-row-heads{grid-column:1;grid-row:2;display:grid;grid-template-rows:37px repeat(4,minmax(0,1fr));background:#e8e3e3;border:1px solid #c0b5b7;border-right:0;color:#7c6c73;font:10px AtwMono,monospace;text-align:center}.b10-row-heads>span{display:grid;place-items:center;border-bottom:1px solid #c0b5b7}.b10-row-heads>span:first-child{background:#e9d9d2;color:#684439}.b10-row-heads>span:last-child{border:0}.b10-grid-data{position:relative;grid-column:2;grid-row:2;min-width:0}.b10-grid-data>.b8-table-selection{inset:-1px -1px auto;height:39px;border:2px solid #b26549;z-index:2}.b8-table-panel[data-table-state=centered] .b10-grid-data>.b8-table-selection{opacity:.6}.b8-table-output{top:370px;left:20px;right:20px;box-shadow:none}.b9-table-pdf-page{padding:13px}.b8-table-panel .b5-table-code{background:#211c25;border-top:1px solid #4e3d4c;color:#c5b2c8}
/* Integrated TikZ workspace: library, canvas and properties share one frame. */
.b7-construction-panel .motion-stage{height:670px;background:#211e26;border-color:#574354}.b7-tikz-bar{height:47px;padding-inline:17px;background:#1d1922;border-color:#4e3d4d}.b7-library{top:47px;bottom:0;left:0;width:216px;padding:14px;border:0;border-right:1px solid #4e3d4d;border-radius:0;background:#29222f;box-shadow:none;overflow:hidden}.b7-library h3{font-size:13px;margin-bottom:10px}.b10-shape-search{display:flex;align-items:center;gap:8px;padding:6px 8px;border:1px solid #5a465f;border-radius:4px;background:#211c27;color:#9f86ab;font-size:17px;margin-bottom:13px;line-height:1}.b10-shape-search>span{font-size:9px}.b10-library-group{margin-bottom:16px}.b10-library-group h4{display:flex;align-items:center;justify-content:space-between;font:500 10px/1.5 Geist,'Plex Arabic',sans-serif;color:#c5aecf;margin:0 0 8px}.b10-library-group h4>span{color:#8f739c}.b7-library-grid{gap:6px}.b7-library-item{min-height:58px;padding:5px 3px;gap:3px;border-color:#56415f;background:#35293c;border-radius:4px}.b7-library-item svg{width:27px;height:27px}.b7-library-item>span{font-size:8px;line-height:1.35}.b7-force-canvas{left:216px;right:228px;top:47px;bottom:162px;padding:9px;background:#241f29;border:0}.b7-force-properties{top:47px;bottom:0;right:0;width:228px;padding:20px 15px;border:0;border-left:1px solid #4e3d4d;border-radius:0;background:#2d2431;box-shadow:none}.b7-force-properties h3{font-size:13px;margin-bottom:20px}.b7-force-fields{gap:13px}.b7-force-field{font-size:10px;gap:9px}.b7-force-field>bdi{font-size:15px;min-width:43px}.b7-force-scale{margin-top:22px}.b7-force-readout{padding-top:17px;margin-top:18px;gap:12px}.b7-generated-source{left:216px;right:228px;bottom:0;min-height:162px;padding:14px 17px;background:#19161f;border:0;border-top:1px solid #4e3d4d;border-radius:0}.b7-generated-source code{font-size:11px;line-height:1.9}.b7-code-heading{font-size:9px}.b7-force-bound{stroke:#bc8d72;stroke-dasharray:4 4}.b7-force-handles{fill:#47353f;stroke:#e6b195}.b7-force-axis{stroke:#756171}.b7-force-body{fill:#6d566a;stroke:#e1b6cb}.b7-force-arrow{stroke-width:2.7}.b7-arrow-resultant{stroke-width:3.2}.concept-b:lang(ar) .b10-library-group h4,.concept-b:lang(ar) .b10-shape-search{direction:rtl}
/* The review appears only after its source anchor has been written. */
.b8-collab-panel .motion-stage{height:630px}.b8-collab-panel .b7-shared-source{padding-top:18px}.b8-collab-panel .b7-source-passage{min-height:86px;padding:5px 0 7px}.b8-collab-panel .b7-source-context code{font-size:12px;line-height:24px}.b8-collab-panel .b7-source-authored{margin-top:5px}.b8-collab-panel .b7-authored-text{font-size:14px;line-height:25px;min-height:50px}.b8-collab-panel .b7-authored-text[dir=rtl],.b8-collab-panel .b7-authored-text[dir=rtl] code{font-size:17px;line-height:27px}.b8-review-thread{top:140px;opacity:0;visibility:hidden}.b8-collab-panel:not([data-review-state=writing]):not([data-review-state=selected]) .b8-review-thread{visibility:visible}.b8-collab-panel:is([data-review-state=writing],[data-review-state=selected]) .b8-review-thread{opacity:0;visibility:hidden}.b8-collab-panel .b7-remote-caret>b{bottom:100%;font-size:8px;padding:1px 5px}.b8-collab-panel .b8-reviewer-caret>b{font-size:8px;padding:1px 5px;bottom:100%}
@media(max-width:1100px){.b7-library{width:186px;padding:12px}.b7-force-canvas{left:186px;right:205px}.b7-force-properties{width:205px;padding:18px 12px}.b7-generated-source{left:186px;right:205px;padding-inline:13px}.b7-generated-source code{font-size:10px}.b7-force-field{font-size:9px}.b7-force-field>bdi{font-size:14px;min-width:39px}.b7-force-readout bdi{font-size:13px}.b8-collab-panel .b7-authored-text{font-size:12px}}
@media(max-width:850px){.b7-construction-panel .motion-stage{height:670px}.b7-library{width:162px;padding:11px}.b7-library-item{min-height:56px}.b7-library-item svg{width:25px;height:25px}.b7-library-item>span{font-size:7.5px}.b10-library-group h4{font-size:9px}.b7-force-canvas{left:162px;right:183px;padding:5px}.b7-force-properties{width:183px;padding:17px 11px}.b7-force-fields{gap:12px}.b7-force-field{font-size:8.5px;gap:5px}.b7-force-field>bdi{min-width:34px;font-size:13px}.b7-force-scale{font-size:8px}.b7-force-scale bdi{font-size:9px}.b7-force-readout>div{font-size:8.5px}.b7-force-readout bdi{font-size:12px}.b7-generated-source{left:162px;right:183px;padding:13px 11px}.b7-generated-source code{font-size:8.5px}.b7-code-heading{font-size:8px}.b8-collab-panel .motion-stage{height:650px}}
@media(max-width:700px){.b8-collab-panel .motion-stage{height:1020px}.b8-collab-panel .b7-shared-source{top:129px;padding:10px 17px}.b8-collab-panel .b7-source-passage{min-height:91px}.b8-collab-panel .b7-source-context code{font-size:10px;line-height:23px}.b8-collab-panel .b7-source-authored{margin-top:5px}.b8-collab-panel .b7-authored-text{font-size:12px;line-height:24px;min-height:48px}.b8-collab-panel .b7-authored-text[dir=rtl],.b8-collab-panel .b7-authored-text[dir=rtl] code{font-size:16px;line-height:27px}.b8-review-thread{top:519px}.b8-collab-panel .b7-remote-caret>b{font-size:8px}}
@media(max-width:600px){.b10-auto-compile{font-size:8px;gap:6px}.b10-auto-compile b{font-size:8px}.b8-table-panel .motion-stage{height:690px}.b8-table-panel .b5-table-title{height:38px;padding-inline:14px;left:0;right:0;top:0;font-size:10px}.b8-table-panel .b5-table-title>bdi{font-size:9px}.b8-table-toolbar{left:9px;right:9px;top:45px;padding:6px;gap:3px}.b8-table-toolbar>span{font-size:9px;padding:7px 6px}.b8-table-toolbar [data-table-preview-action]{font-size:9px;padding:6px}.b8-table-sheet{left:12px;right:12px;top:104px;padding:8px}.b10-grid-address{height:28px;margin-bottom:6px;font-size:10px;gap:9px}.b10-grid-address>bdi{font-size:9px;min-width:54px}.b10-grid-address>span{font-size:10px}.b10-grid-shell{grid-template-columns:24px minmax(0,1fr);grid-template-rows:24px auto}.b10-column-heads{font-size:9px;line-height:23px}.b10-row-heads{grid-template-rows:35px repeat(4,minmax(0,1fr));font-size:9px}.b10-grid-data>.b8-table-selection{height:37px}.b8-table-output{left:12px;right:12px;top:347px}.b9-table-pdf-page{margin:8px;padding:12px}.b7-construction-panel .motion-stage{height:880px}.b7-tikz-bar{height:40px;font-size:10px;padding-inline:13px}.b7-library{top:40px;left:0;right:0;bottom:auto;width:auto;height:203px;padding:11px 13px;border-right:0;border-bottom:1px solid #4e3d4d;overflow:hidden}.b7-library h3{font-size:12px;line-height:21px;margin:0 0 9px}.b10-shape-search{position:absolute;right:13px;top:10px;width:145px;margin:0;padding:5px 7px;font-size:16px}.b10-shape-search>span{font-size:8px}.b10-library-group{margin-bottom:8px}.b10-library-group h4{font-size:9px;margin:0 0 6px;line-height:16px}.b7-library-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}.b7-library-item{min-height:54px;gap:3px;padding:4px 2px}.b7-library-item svg{width:25px;height:25px}.b7-library-item>span{font-size:7.5px}.b10-library-group:not(:first-of-type) .b7-library-grid{display:none}.b10-library-group:not(:first-of-type) h4{padding-top:2px}.b10-library-group:not(:first-of-type) h4>span{transform:rotate(-90deg)}.b7-force-canvas{top:243px;left:0;right:0;bottom:auto;height:291px;padding:5px 8px;border-bottom:1px solid #4e3d4d}.b7-force-properties{top:534px;bottom:auto;left:0;right:0;width:auto;height:185px;padding:12px 14px;border-left:0;border-bottom:1px solid #4e3d4d}.b7-force-properties h3{display:none}.b7-force-fields{grid-template-columns:1fr 1fr;gap:9px 13px}.b7-force-field{font-size:9px;gap:6px}.b7-force-field>bdi{font-size:14px;min-width:34px;padding:4px 6px}.b7-force-scale{font-size:9px;margin-top:12px}.b7-force-scale bdi{font-size:10px}.b7-resultant-option{display:none}.b7-force-readout{display:flex;justify-content:space-between;gap:12px;margin-top:12px;padding-top:12px}.b7-force-readout>div{font-size:9px;gap:7px}.b7-force-readout bdi{font-size:13px}.b7-generated-source{left:0;right:0;bottom:0;min-height:161px;padding:12px 14px;border-top:0}.b7-generated-source code{font-size:9.5px;line-height:1.9}.b7-code-heading{font-size:9px;margin-bottom:10px}.b7-code-end{bottom:12px;right:15px}.b7-force-labels{font-size:24px}.b7-force-labels [data-force-label=resultant]{font-size:23px}.concept-b:lang(ar) .b10-shape-search{right:auto;left:13px}}
@media(prefers-reduced-motion:reduce){.b8-manuscript-row[data-inserted=true] .b8-manuscript-result{animation:none!important}}
.b8-solver-panel .b6-filebar{grid-template-columns:60% 40%}.b8-solver-panel .b6-source-pane{right:40%}.b8-solver-panel .b6-pdf-strip{width:40%;padding:20px}.b8-solver-panel.b6-solver-panel .b6-math-card{left:5%;width:49%;max-width:520px}.b8-solver-panel .b10-matched-paper{padding:25px 22px;font-size:12px;line-height:1.7}.b8-solver-panel .b10-matched-paper h3{font:600 22px/1.5 Georgia,'Amiri',serif;margin:0 0 20px;letter-spacing:0}.b8-solver-panel .b10-matched-paper>p{margin:0 0 12px}.b8-solver-panel .b10-matched-paper>p[lang=ar]{font:17px/1.8 'Amiri',serif;margin-bottom:10px}.b8-solver-panel .b10-matched-paper h4{font:600 14px/1.5 Georgia,serif;margin:22px 0 8px}.b10-matched-paper .b8-manuscript-row{min-height:76px;border:0}.b10-matched-paper .b8-manuscript-row math{font-size:24px}.b8-solver-panel .b10-matched-paper .b5-paper-table{font-size:12px}.b8-solver-panel .b10-matched-paper .b5-paper-table th,.b8-solver-panel .b10-matched-paper .b5-paper-table td{border:0;font-style:normal;padding:5px 9px}
@media(max-width:850px){.b8-solver-panel .b6-source-pane{padding-inline:16px}.b8-solver-panel .b6-pdf-strip{padding:14px}.b8-solver-panel .b10-matched-paper{padding:20px 15px;font-size:11px}.b8-solver-panel .b10-matched-paper h3{font-size:18px}.b8-solver-panel .b10-matched-paper>p[lang=ar]{font-size:15px}.b10-matched-paper .b8-manuscript-row math{font-size:21px}.b8-solver-panel.b6-solver-panel .b6-math-card{left:4%;width:62%}}
@media(max-width:600px){.b8-solver-panel.b6-solver-panel .motion-stage{height:1000px}.b8-solver-panel .b6-filebar{grid-template-columns:1fr}.b8-solver-panel .b6-source-pane{right:0;padding-inline:11px}.b8-solver-panel .b6-pdf-strip{width:auto;left:0;right:0;height:320px;padding:10px;overflow:auto}.b8-solver-panel .b10-matched-paper{height:auto;min-height:100%;overflow:visible;padding:16px 18px;font-size:11px}.b8-solver-panel .b10-matched-paper h3{font-size:18px;margin-bottom:12px}.b8-solver-panel .b10-matched-paper>p{display:block!important;margin-bottom:8px}.b8-solver-panel .b10-matched-paper>p[lang=ar]{font-size:15px;line-height:1.7;direction:rtl;text-align:right}.b8-solver-panel .b10-matched-paper h4{display:block;margin-top:16px;font-size:13px}.b8-solver-panel .b10-matched-paper .b5-paper-table{display:table;font-size:11px}.b10-matched-paper .b8-manuscript-row{min-height:47px}.b10-matched-paper .b8-manuscript-row math{font-size:21px}.b8-solver-panel.b6-solver-panel .b6-math-card{left:10px;right:10px;width:auto}}
.b7-force-canvas>.b10-canvas-grid{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.b7-force-canvas>.b10-force-drawing{position:relative;z-index:1}.b8-collab-panel .b7-source-passage{min-height:0;padding:0;border:0}.b8-collab-panel .b7-source-context,.b8-collab-panel .b7-source-authored{min-height:25px;line-height:25px}.b8-collab-panel .b7-source-context code,.b8-collab-panel .b7-source-context>span,.b8-collab-panel .b7-source-authored>span{line-height:25px}.b8-collab-panel .b7-source-authored{margin-top:0}.b8-collab-panel .b7-authored-text{min-height:25px;line-height:25px}.b8-collab-panel .b7-authored-text[dir=rtl],.b8-collab-panel .b7-authored-text[dir=rtl] code{line-height:27px;min-height:27px}
@media(min-width:601px) and (max-width:850px){.b8-solver-panel.b6-solver-panel .b6-math-card{left:3%;width:55%}}
@media(max-width:700px){.b8-collab-panel .motion-stage{height:920px}.b8-review-thread{top:430px}.b8-collab-panel .b7-source-passage{min-height:0}.b8-collab-panel .b7-source-authored{margin-top:0}.b8-collab-panel .b7-authored-text{min-height:25px;line-height:25px}}

/* Shared website chrome: every surface follows the selected appearance. */
body.concept-b {
  --hero-bg: #f5f1eb;
  --hero-ink: #292329;
  --hero-muted: #6d626b;
  --hero-accent: #ad4b32;
  --hero-line: #ded3ca;
  --hero-frame: #e9ded4;
  --control-bg: #fffaf5;
  --control-hover: #ebe1d7;
  --scroll-thumb: #ad9689;
  --scroll-track: #f5f1eb;
}
html[data-theme=dark] body.concept-b {
  --hero-bg: #121216;
  --hero-ink: #fff6ef;
  --hero-muted: #c0b5c2;
  --hero-accent: #ffad92;
  --hero-line: #40343b;
  --hero-frame: #2f2327;
  --control-bg: #211c23;
  --control-hover: #342a32;
  --scroll-thumb: #715952;
  --scroll-track: #17171b;
}
html { scrollbar-width: thin; scrollbar-color: #ad9689 #f5f1eb; scrollbar-gutter: stable; }
html[data-theme=dark] { scrollbar-color: #715952 #17171b; }
.concept-b * { scrollbar-width: thin; scrollbar-color: var(--scroll-thumb) transparent; }
html::-webkit-scrollbar, .concept-b ::-webkit-scrollbar { width: 9px; height: 7px; }
html::-webkit-scrollbar-track { background: #f5f1eb; }
html[data-theme=dark]::-webkit-scrollbar-track { background: #17171b; }
html::-webkit-scrollbar-thumb, .concept-b ::-webkit-scrollbar-thumb { background: #ad9689; border: 2px solid transparent; background-clip: padding-box; border-radius: 12px; }
html[data-theme=dark]::-webkit-scrollbar-thumb, html[data-theme=dark] .concept-b ::-webkit-scrollbar-thumb { background-color: #715952; }
html[data-theme] .concept-b .site-header,
html[data-theme] .concept-b .b5-hero,
html[data-theme] .concept-b .b5-closing { background: var(--hero-bg); color: var(--hero-ink); }
html[data-theme] .concept-b .site-header { border-color: var(--hero-line); }
html[data-theme] .concept-b .nav a { color: var(--hero-muted); }
html[data-theme] .concept-b .nav a:hover,
html[data-theme] .concept-b .nav a[aria-current=page] { color: var(--hero-ink); }
html[data-theme] .concept-b .b5-intro h1 .ignite-phrase-stack,
html[data-theme] .concept-b .b5-intro h1 .ignite-phrase,
html[data-theme] .concept-b .b5-intro h1 .thmanyah-flourish { color: var(--hero-ink); }
html[data-theme] .concept-b .ignite-headline-anchor { color: var(--hero-accent); }
html[data-theme] .concept-b .b5-intro > p:not(.b5-category),
html[data-theme] .concept-b .b11-equation-story p,
html[data-theme] .concept-b .b5-closing p,
html[data-theme] .concept-b .b5-hero-caption,
html[data-theme] .concept-b .b5-jump a { color: var(--hero-muted); }
html[data-theme] .concept-b .b5-jump a:hover { color: var(--hero-ink); }
html[data-theme] .concept-b .b5-hero-mount { background: var(--hero-frame); border-color: var(--hero-line); box-shadow: 0 16px 64px #63362212; }

/* Text and controls share a centered 40px rail in both writing directions. */
.concept-b .header-controls { display: flex; align-items: center; gap: 10px; }
.concept-b .language-switch,
.concept-b .menu-button,
.concept-b .theme-trigger { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; height: 40px; padding: 0 10px; margin: 0; line-height: 1; color: var(--hero-ink); background: transparent; border: 1px solid transparent; border-radius: 8px; text-decoration: none; }
.concept-b .language-switch[lang=en] { font-family: Geist, sans-serif; font-size: 12px; }
.concept-b .language-switch[lang=ar] { font-family: 'Thmanyah Sans', 'Plex Arabic', sans-serif; font-size: 14px; }
.concept-b .menu-button { display: none; font-size: 13px; }
.concept-b .language-switch:hover,
.concept-b .menu-button:hover,
.concept-b .theme-trigger:hover { background: var(--control-hover); }
.concept-b .theme-picker { position: relative; flex: none; }
.concept-b .theme-trigger { width: 40px; padding: 0; cursor: pointer; border-color: var(--hero-line); }
.concept-b .theme-current-icon { display: flex; }
.concept-b .theme-picker svg { width: 18px; height: 18px; flex: none; }
.concept-b .theme-options { position: absolute; z-index: 40; inset-block-start: calc(100% + 8px); inset-inline-end: 0; width: 166px; padding: 6px; border: 1px solid var(--hero-line); border-radius: 12px; background: var(--control-bg); box-shadow: 0 10px 28px #100c1522; }
.concept-b .theme-options[hidden] { display: none; }
.concept-b .theme-options button { width: 100%; display: flex; align-items: center; gap: 12px; min-height: 42px; padding: 8px 10px; color: var(--hero-muted); border: 0; border-radius: 7px; font-size: 13px; background: transparent; cursor: pointer; text-align: start; }
.concept-b .theme-options button:hover,
.concept-b .theme-options button[aria-pressed=true] { color: var(--hero-ink); background: var(--control-hover); }
.concept-b .theme-selected { width: 5px; height: 5px; border-radius: 50%; margin-inline-start: auto; }
.concept-b [aria-pressed=true] .theme-selected { background: var(--hero-accent); }
.concept-b .theme-picker :focus-visible,
.concept-b .language-switch:focus-visible { outline: 2px solid var(--hero-accent); outline-offset: 3px; }

/* One inline bilingual label, without the old flex gap or decorative arrows. */
html[data-theme] .concept-b .download-cta { min-height: 49px; gap: 0; padding: 12px 23px; border-radius: 8px; font-size: 15px; line-height: 1.6; font-weight: 500; background: var(--hero-ink); color: var(--hero-bg); border: 1px solid transparent; box-shadow: 0 2px 2px #1b10100a; transition: background .18s ease, box-shadow .18s ease; }
html[data-theme=dark] .concept-b .download-cta { background: #fff0e5; color: #2a2023; }
html[data-theme] .concept-b .download-cta:hover { background: var(--hero-accent); color: var(--hero-bg); box-shadow: 0 3px 12px #a5563520; }
.concept-b .download-label { display: inline; white-space: nowrap; }
.concept-b .download-label bdi { font-family: Geist, sans-serif; font-size: .96em; }
html[data-theme] .concept-b .b5-hero .b5-actions > .b5-link { color: var(--hero-ink); padding: 10px 0; font-size: 14px; }
.concept-b .b5-actions > .b5-link span { text-decoration: underline; text-decoration-color: var(--hero-line); text-underline-offset: 6px; text-decoration-thickness: 1px; }
.concept-b .b5-actions > .b5-link:hover span { text-decoration-color: var(--hero-accent); }
.concept-b .docs-sidebar { max-height: calc(100dvh - 50px); overflow-y: auto; overscroll-behavior: contain; scrollbar-gutter: stable; padding-inline-end: 12px; scroll-padding-block: 16px; }
.concept-b .docs-sidebar .search { position: sticky; top: 0; z-index: 2; background: var(--bg); padding-block: 2px 12px; }
@media (max-width: 850px) {
  .concept-b .menu-button { display: inline-flex; }
  .concept-b .docs-sidebar { max-height: none; overflow: visible; padding-inline-end: 0; }
  .concept-b .docs-sidebar .search { position: static; }
  .concept-b .docs-sidebar details[open] .docs-nav { max-height: 55dvh; overflow-y: auto; padding-inline-end: 10px; overscroll-behavior: contain; }
}
@media (max-width: 600px) {
  .concept-b .header-controls { gap: 3px; }
  .concept-b .language-switch { padding-inline: 7px; }
  .concept-b .menu-button { padding-inline: 8px; }
  .concept-b .theme-trigger { width: 36px; }
  html[data-theme] .concept-b .download-cta { padding-inline: 18px; font-size: 14px; }
  .concept-b .b5-actions { gap: 12px 22px; }
  html[data-theme] .concept-b .b5-hero .b5-actions > .b5-link { font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) {
  html[data-theme] .concept-b .download-cta { transition: none; }
}

/* The illustrated editor follows light mode along with its surrounding hero. */
html[data-theme=light] .concept-b .b8-solver-panel .motion-stage { background: #fffaf5; }
html[data-theme=light] .concept-b .b8-solver-panel .b6-filebar { background: #eee5dd; color: #5b4653; border-color: #d8cac0; }
html[data-theme=light] .concept-b .b8-solver-panel .b6-filebar > span:last-child { background: #e6dad0; border-color: #d8cac0; }
html[data-theme=light] .concept-b .b8-solver-panel .b6-source-pane { color: #443a47; }
html[data-theme=light] .concept-b .b8-solver-panel .b5-code-line code b { color: #a24429; }
html[data-theme=light] .concept-b .b8-solver-panel .b5-code-line code i { color: #786772; }
html[data-theme=light] .concept-b .b8-solver-panel .b5-code-line code em,
html[data-theme=light] .concept-b .b8-solver-panel .b8-equation-inserted { color: #4b6639; }
html[data-theme=light] .concept-b .b8-solver-panel .bi5-line-index,
html[data-theme=light] .concept-b .b8-solver-panel .b8-equation-number { color: #8b7784; }
html[data-theme=light] .concept-b .b8-solver-panel .b8-source-context { opacity: 1; }
html[data-theme=light] .concept-b .b8-solver-panel .b10-auto-compile { color: #705e6b; }
html[data-theme=light] .concept-b .b8-solver-panel .b10-auto-compile b { color: #4b6639; }
html[data-theme=light] .concept-b .b8-solver-panel[data-auto-compiling=true] .b10-auto-compile b { color: #a24429; }
html[data-theme=light] .concept-b .b8-solver-panel .b8-equation-row[data-active=true] { background: #a75b3210; border-color: #b67a5f66; }
html[data-theme=light] .concept-b .b8-solver-panel .b8-equation-row[data-inserted=true] { background: #527a3210; }
html[data-theme=light] .concept-b .b8-solver-panel .b6-pdf-strip { background: #e7dcd3; }
html[data-theme=light] .concept-b .b8-solver-panel .b6-pdf-strip::before { color: #705e6b; }
html[data-theme=light] .concept-b .b8-solver-panel .b6-pdf-page { background: #fff; color: #393032; box-shadow: 0 5px 18px #5e3e2420; }
html[data-theme=light] .concept-b .b8-solver-panel .b6-math-card,
html[data-theme=light] .concept-b .b8-solver-panel .b6-card-result { background: #fffaf5; color: #3c3036; border-color: #c8b5a9; box-shadow: 0 12px 28px #63483222; }
html[data-theme=light] .concept-b .b8-solver-panel .b6-solve-menu { background: #fffdf9; color: #584049; border-color: #c8b5a9; box-shadow: 0 8px 20px #63483222; }