/* MathForge (c) 2026 Teodor Marti. Proprietary - see LICENSE. Not for reuse, redistribution, or model training. */
:root{--titan:#1E4A8C;--titan-dark:#0F2E5C;--titan-light:#4A78B8;--titan-soft:#EAF1FB;--on-titan-soft:var(--titan-dark);--on-titan:#FFFFFF;--paper:oklch(98.5% 0.008 75);--paper-deep:oklch(96.2% 0.012 75);--paper-deeper:oklch(94% 0.014 75);--ink:oklch(22% 0.015 260);--ink-muted:oklch(48% 0.012 260);--ink-faint:oklch(52% 0.01 260);--rule:oklch(89% 0.008 80);--rule-soft:oklch(93% 0.008 80);--ochre:oklch(72% 0.13 75);--ochre-soft:oklch(94% 0.04 80);--ochre-deep:oklch(54% 0.12 70);--surface-1:oklch(99.5% 0.004 75);--surface-2:#FFFFFF;--shadow-paper:0 1px 0 rgba(28,22,12,.04),0 6px 18px -14px rgba(28,22,12,.18);--shadow-lift:0 2px 0 rgba(28,22,12,.04),0 14px 32px -18px rgba(28,22,12,.22);--font-display:"Source Serif 4",Charter,Georgia,serif;--font-ui:"Inter",system-ui,sans-serif;--font-mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,monospace;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--r-chip:2px;--r-input:4px;--r-card:6px;--r-modal:14px;--focus-color:var(--ochre);--rail-w:292px;--class-0:oklch(50% 0.15 255);--class-1:oklch(58% 0.15 50);--class-2:oklch(52% 0.13 150);--class-3:oklch(50% 0.16 305);--class-4:oklch(54% 0.18 15);--class-5:oklch(54% 0.09 200);--class-on-0:#ffffff;--class-on-1:#000000;--class-on-2:#ffffff;--class-on-3:#ffffff;--class-on-4:#ffffff;--class-on-5:#ffffff}[data-theme="dark"]{--paper:oklch(18% 0.012 260);--paper-deep:oklch(22% 0.014 260);--paper-deeper:oklch(26% 0.014 260);--ink:oklch(93% 0.008 260);--ink-muted:oklch(72% 0.01 260);--ink-faint:oklch(64% 0.01 260);--ochre:oklch(78% 0.14 80);--ochre-deep:oklch(84% 0.12 80);--ochre-soft:oklch(30% 0.06 75);--rule:oklch(32% 0.012 260);--rule-soft:oklch(28% 0.012 260);--surface-1:oklch(21% 0.013 260);--surface-2:oklch(24% 0.014 260);--titan-soft:oklch(28% 0.03 250);--on-titan-soft:oklch(88% 0.05 250)}@media (prefers-color-scheme:dark){:root:not([data-theme]){--paper:oklch(18% 0.012 260);--paper-deep:oklch(22% 0.014 260);--paper-deeper:oklch(26% 0.014 260);--ink:oklch(93% 0.008 260);--ink-muted:oklch(72% 0.01 260);--ink-faint:oklch(64% 0.01 260);--ochre:oklch(78% 0.14 80);--ochre-deep:oklch(84% 0.12 80);--ochre-soft:oklch(30% 0.06 75);--rule:oklch(32% 0.012 260);--rule-soft:oklch(28% 0.012 260);--surface-1:oklch(21% 0.013 260);--surface-2:oklch(24% 0.014 260);--titan-soft:oklch(28% 0.03 250);--on-titan-soft:oklch(88% 0.05 250);--class-0:oklch(74% 0.12 255);--class-1:oklch(78% 0.13 60);--class-2:oklch(77% 0.14 150);--class-3:oklch(74% 0.13 305);--class-4:oklch(73% 0.14 15);--class-5:oklch(79% 0.1 195);--class-on-0:oklch(22% 0.015 260);--class-on-1:oklch(22% 0.015 260);--class-on-2:oklch(22% 0.015 260);--class-on-3:oklch(22% 0.015 260);--class-on-4:oklch(22% 0.015 260);--class-on-5:oklch(22% 0.015 260)}}*,*::before,*::after{box-sizing:border-box}[hidden]{display:none !important}html,body{height:100%}body{margin:0;font-family:var(--font-ui);font-size:14px;color:var(--ink);background:var(--paper-deep);-webkit-font-smoothing:antialiased}.skip-link{position:absolute;left:-9999px;top:0;z-index:100;background:var(--titan);color:var(--on-titan);padding:10px 16px;border-radius:0 0 var(--r-card) 0;font-weight:600;text-decoration:none}.skip-link:focus{left:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}:focus-visible{outline:2px solid var(--focus-color);outline-offset:2px;border-radius:var(--r-chip)}.nav{background:var(--surface-1);border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:20}.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:var(--space-3) 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auto;justify-content:flex-end}.nav-menu{display:inline-flex;align-items:center;gap:var(--space-2);margin-left:var(--space-3);flex-shrink:0}.nav-menu-btn,.nav-menu .btn{width:7.4rem;min-width:7.4rem;box-sizing:border-box;padding:6px 0;text-align:center;font-size:13px;line-height:1.2;white-space:nowrap;justify-content:center}.nav-menu .btn.is-here{background:var(--titan-soft);color:var(--on-titan-soft);border-color:var(--titan);pointer-events:none}@media (max-width:900px){.nav-menu-btn,.nav-menu .btn{width:auto;min-width:0;padding:6px 10px}}.rail-also{margin:4px 0 0}.rail-also 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var(--rule);border-radius:var(--r-input);background:var(--surface-2);color:var(--ink)}.input:hover,.sel:hover{border-color:var(--ink-faint)}.ta{resize:vertical;font-family:var(--font-ui);line-height:1.45}.sel{width:auto}.sel-full{width:100%}.lbl{display:block;font-size:12px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:var(--space-1)}.lbl-sm{font-size:11px;margin-top:var(--space-2)}.chk{display:flex;align-items:center;gap:var(--space-2);font-size:14px;padding:3px 0;cursor:pointer}.chk-sm{font-size:13px;margin-top:var(--space-2)}.field{margin-bottom:var(--space-3)}.field-set{border:1px solid var(--rule-soft);border-radius:var(--r-card);padding:var(--space-2) var(--space-3);margin:0 0 var(--space-3)}.field-set legend{padding:0 var(--space-2)}.rule{border:0;border-top:1px solid var(--rule-soft);margin:var(--space-4) 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25)}.designer{display:grid;grid-template-columns:var(--rail-w) minmax(0,1fr) var(--rail-w);height:calc(100vh - 60px)}.rail{display:flex;flex-direction:column;min-height:0;background:var(--surface-1)}.rail-left{overflow-y:auto;border-right:1px solid var(--rule)}.rail-left .rail-body{overflow:visible;flex:0 0 auto}.rail-left .brief-wrap .rail-body{max-height:none}.rail-right{border-left:1px solid var(--rule)}.rail-head{padding:var(--space-4) var(--space-4) var(--space-2)}.rail-title{font-family:var(--font-display);font-size:18px;margin:0;font-weight:600}.rail-subtitle{font-family:var(--font-display);font-size:15px;margin:0 0 var(--space-2);font-weight:600}.rail-note{font-size:13px;color:var(--ink-faint);margin:var(--space-1) 0 0}.rail-empty{padding:var(--space-4)}.rail-search,.rail-filter{padding:0 var(--space-4) var(--space-2)}.rail-body{flex:1;overflow-y:auto;padding:var(--space-2) var(--space-4) var(--space-6);min-height:0}.unit{border-bottom:1px solid 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0);white-space:nowrap}.stage-bar-right{gap:var(--space-2);margin-left:auto}.stage-bar-right .fit-group{gap:4px}.tb-icons{display:inline-flex;align-items:stretch;gap:2px}.tb{position:relative;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-width:42px;padding:3px 4px;border:1px solid transparent;border-radius:var(--r-card);background:transparent;color:var(--ink-muted);cursor:pointer;font:inherit;transition:color 120ms ease,background-color 120ms ease,border-color 120ms ease}.tb .tb-svg{width:18px;height:18px;display:block}.tb-lbl{font-size:10.5px;font-weight:600;line-height:1;white-space:nowrap}.tb:hover{background:var(--paper-deeper);color:var(--ink)}.tb:focus-visible{outline:2px solid var(--focus-color);outline-offset:1px}.tb-primary{background:var(--titan);color:var(--on-titan);border-color:var(--titan)}.tb-primary:hover{background:var(--titan-dark,var(--titan));color:var(--on-titan)}.tb-dot{position:absolute;top:4px;right:6px;width:8px;height:8px;border-radius:50%;background:var(--ochre);border:2px solid var(--surface-1);display:none}.tb.is-dirty .tb-dot{display:block}.dl-btn.tb .dl-caret{margin-left:2px}#btnReroll .tb-svg{width:15px;height:15px;margin-right:5px;vertical-align:-3px;display:inline-block}.stage-scroll{flex:1;overflow-y:auto;padding:var(--space-6) var(--space-4);display:flex;justify-content:center}.paper{width:100%;max-width:8.5in}.designer-flow{height:auto;min-height:calc(100vh - 60px);align-items:start}body.flow{height:auto;min-height:100%}.pg-rotation-anchor{margin-top:var(--space-2);display:grid;gap:4px}.designer-flow .rail-left{position:sticky;top:60px;height:calc(100vh - 60px)}.designer-flow .stage{min-height:calc(100vh - 60px)}.designer-flow .stage-bar{position:sticky;top:60px;z-index:10}.designer-flow .stage-scroll{flex:1 0 auto;overflow:visible}@media print{.designer-flow .rail-left,.designer-flow .stage-bar{position:static;height:auto}}.ws-page{background:#fff;color:#111;--ws-rule:#c4c4c4;--ws-line-gap:26px;padding:0.5in;min-height:11in;box-shadow:var(--shadow-lift)}.ws-head{border-bottom:1.5px solid #111;padding-bottom:7px;margin-bottom:12px}.ws-head-top{display:flex;justify-content:space-between;align-items:flex-end;gap:20px}.ws-course{font-family:var(--font-ui);font-size:8.5pt;text-transform:uppercase;letter-spacing:.09em;color:#555}.ws-title{font-size:15pt;margin:2px 0 0;font-weight:700;letter-spacing:-.01em}.ws-version{color:var(--titan);font-weight:700}.ws-fields{display:flex;gap:14px;align-items:flex-end;font-family:var(--font-ui);font-size:8.5pt;color:#555}.ws-field{display:inline-flex;align-items:flex-end;gap:4px}.ws-field-lbl{white-space:nowrap;color:#333}.ws-field-rule{border-bottom:1px solid 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.coach-do,[data-theme="contrast-dark"] .coach-do,[data-theme="neon"] .coach-do,[data-theme="terminal"] .coach-do,[data-theme="blueprint"] .coach-do,[data-theme="arcade"] .coach-do,[data-theme="twinsuns"] .coach-do{color:var(--titan-light)}@media (prefers-color-scheme:dark){:root:not([data-theme]) .coach-do{color:var(--titan-light)}}.brief-wrap{border-top:1px solid var(--rule)}.brief-wrap > .unit-head{padding:var(--space-3) var(--space-4)}.brief-wrap .rail-body{max-height:42vh}.brief{font-size:12.5px;line-height:1.5}.brief h4{font-size:10px;text-transform:uppercase;letter-spacing:.07em;color:var(--ink-faint);margin:var(--space-3) 0 2px;font-weight:700}.brief p{margin:0;color:var(--ink-muted)}.brief-idea{color:var(--ink) !important;font-weight:500}.brief-list{color:var(--ink-muted)}.brief-generic{font-size:12px;color:var(--ink-faint);font-style:italic;margin-top:var(--space-3)}.brief-why li{color:var(--ink-muted)}.ws-tools{border:1px solid #ccc;border-radius:4px;padding:5px 9px;margin-bottom:10px;font-size:9.5pt;display:flex;flex-wrap:wrap;gap:3px 14px;align-items:baseline}.ws-tools-label{font-family:var(--font-ui);font-size:7.5pt;text-transform:uppercase;letter-spacing:.07em;color:#888;font-weight:700;margin-right:4px}.ws-tool-note{color:#767676;font-style:italic}.ws-tool-link{color:#444;font-family:var(--font-mono);font-size:8.5pt;text-decoration:none}.ws-precision{font-size:9pt;color:#555;margin-bottom:10px;display:flex;flex-wrap:wrap;gap:3px 18px}.ws-precision span::before{content:"· ";color:#aaa}.ws-stuck{border-left:3px solid #bbb;padding:3px 0 3px 11px;margin-bottom:14px;break-inside:avoid}.ws-stuck-label{font-family:var(--font-ui);font-size:8.5pt;font-weight:700;color:#555;display:block;margin-bottom:3px}.ws-stuck-list{margin:0;padding-left:17px;font-size:9.5pt;color:#555}.ws-stuck-list li{margin-bottom:2px}.ws-reasoning,.ws-protocol{break-inside:avoid}.ws-reason-prompt{font-size:10.5pt;margin:0 0 7px}.ws-write-lines{display:flex;flex-direction:column;gap:26px;margin-top:10px}.ws-write-lines span{border-bottom:1px solid var(--ws-rule);height:1px}.ws-protocol-body{font-size:10.5pt;margin:0;color:#333}.ws-selfcheck{margin-top:16px;padding-top:8px;border-top:1px dashed var(--ws-rule);font-size:9.5pt;break-inside:avoid}.ws-selfcheck-label{font-family:var(--font-ui);font-size:8pt;text-transform:uppercase;letter-spacing:.06em;color:#888;font-weight:700;margin-right:10px}.ws-selfcheck-opts{display:inline-flex;gap:20px;flex-wrap:wrap}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 var(--space-2)}[data-theme="slate"]{--paper:oklch(20% 0 0);--paper-deep:oklch(24% 0 0);--paper-deeper:oklch(28% 0 0);--ink:oklch(94% 0 0);--ink-muted:oklch(74% 0 0);--ink-faint:oklch(66% 0 0);--ochre:oklch(78% 0.14 80);--ochre-deep:oklch(84% 0.12 80);--ochre-soft:oklch(30% 0.06 75);--rule:oklch(34% 0 0);--rule-soft:oklch(29% 0 0);--surface-1:oklch(23% 0 0);--surface-2:oklch(26% 0 0);--titan:#5B8DD9;--titan-light:#7FA9E5;--titan-dark:#3F6FBC;--titan-soft:oklch(30% 0.03 250);--on-titan-soft:oklch(90% 0.04 250);--on-titan:#111111}[data-theme="contrast-light"]{--paper:#FFFFFF;--paper-deep:#F2F2F2;--paper-deeper:#E4E4E4;--ink:#000000;--ink-muted:#1A1A1A;--ink-faint:#3A3A3A;--rule:#000000;--rule-soft:#6A6A6A;--surface-1:#FFFFFF;--surface-2:#FFFFFF;--titan:#00348F;--titan-dark:#00235F;--titan-light:#0047C4;--titan-soft:#D6E2FF;--on-titan-soft:#00235F;--ochre:#8A5A00;--ochre-deep:#6B4500;--ochre-soft:#FFF0D0;--focus-color:#0047C4;--focus-width:3px;--focus-offset:2px;--shadow-paper:none;--shadow-lift:0 0 0 1px #000}[data-theme="contrast-dark"]{--paper:#000000;--paper-deep:#0D0D0D;--paper-deeper:#1A1A1A;--ink:#FFFFFF;--ink-muted:#EAEAEA;--ink-faint:#C4C4C4;--rule:#FFFFFF;--rule-soft:#8A8A8A;--surface-1:#0A0A0A;--surface-2:#141414;--titan:#7FB3FF;--titan-dark:#A9CCFF;--titan-light:#A9CCFF;--titan-soft:#1E2A3D;--on-titan-soft:#CFE2FF;--ochre:#FFC53D;--ochre-deep:#FFD980;--ochre-soft:#2A2010;--focus-color:#FFC53D;--focus-width:3px;--focus-offset:2px;--shadow-paper:none;--shadow-lift:0 0 0 1px #FFF;--on-titan:#000000}[data-theme="contrast-light"] .btn,[data-theme="contrast-dark"] .btn,[data-theme="contrast-light"] .input,[data-theme="contrast-dark"] .input,[data-theme="contrast-light"] .sel,[data-theme="contrast-dark"] .sel{border-width:2px}[data-theme="contrast-light"] .nav,[data-theme="contrast-dark"] .nav{border-bottom-width:2px}[data-theme="contrast-light"] .rail-left,[data-theme="contrast-dark"] .rail-left{border-right-width:2px}[data-theme="contrast-light"] .rail-right,[data-theme="contrast-dark"] .rail-right{border-left-width:2px}[data-theme="contrast-light"] :focus-visible,[data-theme="contrast-dark"] :focus-visible{outline-width:3px}[data-theme="contrast-light"] .topic-std,[data-theme="contrast-dark"] .topic-std{color:var(--ink-muted)}[data-theme="neon"]{--paper:#10041F;--paper-deep:#180730;--paper-deeper:#220C42;--ink:#F5E9FF;--ink-muted:#C9A9E8;--ink-faint:#9473B9;--rule:#3D1B66;--rule-soft:#2A1147;--surface-1:#170630;--surface-2:#1F0940;--titan:#FF2E97;--titan-dark:#FF6FB8;--titan-light:#21E6C1;--titan-soft:#34104F;--on-titan-soft:#21E6C1;--ochre:#FFD166;--ochre-deep:#FFE29A;--ochre-soft:#3A2A0E;--focus-color:#21E6C1;--shadow-lift:0 0 0 1px #FF2E97,0 0 26px -6px rgba(255,46,151,.55);--shadow-paper:0 0 18px -8px rgba(33,230,193,.5);--on-titan:#10041F}[data-theme="neon"] .nav-mark{background:linear-gradient(135deg,#FF2E97,#21E6C1);color:#10041F}[data-theme="neon"] .btn-primary{box-shadow:0 0 14px -3px #FF2E97}[data-theme="neon"] 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Mono",ui-monospace,monospace;font-weight:500}[data-theme="terminal"] .nav-title::before,[data-theme="terminal"] .rail-title::before{content:"> ";opacity:.7}[data-theme="terminal"] .btn{border-radius:0}[data-theme="terminal"] .input,[data-theme="terminal"] .sel{border-radius:0}[data-theme="terminal"] .panel-head{letter-spacing:.1em}[data-theme="blueprint"]{--paper:#062A52;--paper-deep:#073B6B;--paper-deeper:#0B4A82;--ink:#F2FAFF;--ink-muted:#A9DCFF;--ink-faint:#78C1ED;--rule:#3D82BE;--rule-soft:#1E5B90;--surface-1:#073B6B;--surface-2:#0A4275;--titan:#7FE0FF;--titan-dark:#B4EEFF;--titan-light:#B4EEFF;--titan-soft:#16456F;--on-titan-soft:#B4EEFF;--ochre:#FFD9A0;--ochre-deep:#FFE9C7;--ochre-soft:#3A2B12;--focus-color:#FFD9A0;--shadow-lift:0 0 0 1px #2A6191;--shadow-paper:none;--on-titan:#062A52}[data-theme="blueprint"] .stage{background-image:linear-gradient(rgba(160,230,255,.14) 1px,transparent 1px),linear-gradient(90deg,rgba(160,230,255,.14) 1px,transparent 1px);background-size:20px 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.nav-mark{background:linear-gradient(180deg,#2E8BFF 0 50%,#FF9E1B 50% 100%);color:#06122E}[data-theme="arcade"] .btn-primary{box-shadow:0 3px 0 0 #12539E}[data-theme="arcade"] .btn-primary:active{transform:translateY(2px);box-shadow:0 1px 0 0 #12539E}[data-theme="arcade"] .seg-btn.is-on{box-shadow:inset 0 -2px 0 0 #FFC93C}[data-theme="arcade"] .nav-title{letter-spacing:.06em;text-transform:uppercase}[data-theme="lhs"]{--paper:#F7F9FB;--paper-deep:#EDF1F6;--paper-deeper:#E1E8F0;--ink:#0F1A2B;--ink-muted:#47566E;--ink-faint:#5A687F;--rule:#C9D3E0;--rule-soft:#E2E8F0;--surface-1:#FFFFFF;--surface-2:#FFFFFF;--titan:#0C2340;--titan-dark:#061A31;--titan-light:#8A94A6;--titan-soft:#E3E9F1;--on-titan-soft:#0C2340;--ochre:#78849A;--ochre-deep:#4A5568;--ochre-soft:#EDF0F4;--focus-color:#0C2340;--on-titan:#FFFFFF;--shadow-paper:0 1px 0 rgba(12,35,64,.05),0 6px 18px -14px rgba(12,35,64,.22);--shadow-lift:0 2px 0 rgba(12,35,64,.05),0 14px 32px -18px rgba(12,35,64,.26)}[data-theme="lhs"] 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#E8B44C}.rail-account{border-top:1px solid var(--rule);padding:var(--space-4) var(--space-4) var(--space-5);background:var(--surface-1);display:flex;flex-direction:column;gap:var(--space-3);flex-shrink:0}.account-top{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2)}.account-avatar{width:32px;height:32px;border-radius:50%;flex-shrink:0;background:var(--titan);color:var(--on-titan);display:grid;place-items:center;font-weight:700;font-size:13px;overflow:hidden}.account-avatar img{width:100%;height:100%;object-fit:cover}.account-name-row{display:flex;align-items:center;gap:var(--space-2);flex-wrap:wrap;row-gap:var(--space-1)}.account-name-row .account-name{flex:1 1 140px;width:auto;min-width:0}.account-signout{flex:0 0 auto}.has-pending{border-color:var(--ochre)}.pending-dot{display:inline-flex;align-items:center;justify-content:center;min-width:17px;height:17px;margin-left:5px;padding:0 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var(--focus-color);outline-offset:2px}.dl{position:relative;display:inline-flex}.dl-btn{display:inline-flex;align-items:center}.dl-btn.tb{flex-direction:column}.dl-caret{font-size:10px;margin-left:5px;opacity:.8}.dl-menu{position:absolute;top:calc(100% + 8px);right:0;z-index:40;width:21rem;background:var(--surface-1);border:1px solid var(--rule);border-radius:var(--r-card);box-shadow:var(--shadow-lift);padding:var(--space-1)}.dl-opt{display:block;width:100%;text-align:left;cursor:pointer;background:none;border:0;border-radius:var(--r-input);padding:var(--space-2) var(--space-3);transition:background-color 150ms ease}.dl-opt:hover{background:var(--paper-deep)}.dl-opt:focus-visible{outline:2px solid var(--focus-color);outline-offset:-2px}.dl-opt + .dl-opt{margin-top:2px}.dl-opt-name{display:block;font-family:var(--font-ui);font-size:14px;font-weight:600;color:var(--ink)}.dl-opt-note{display:block;font-size:12px;color:var(--ink-muted);line-height:1.4;margin-top:3px}.dl-tag{font-size:10px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--on-titan-soft);background:var(--titan-soft);padding:1px 5px;border-radius:var(--r-chip);margin-left:5px;vertical-align:1px}@media (max-width:900px){.dl-menu{width:min(21rem,calc(100vw - 32px))}}.theme-pick{position:relative;display:flex;align-items:center}.theme-btn{display:grid;place-items:center;width:32px;height:32px;padding:0;border:1px solid var(--rule);border-radius:var(--r-card);background:var(--surface-2);color:var(--ink-muted);cursor:pointer;transition:color 150ms ease,border-color 150ms ease,background-color 150ms ease}.theme-btn:hover{color:var(--ink);border-color:var(--ink-faint)}.theme-btn:focus-visible{outline:2px solid 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