/* FDE labs share the application's paper, ink, and focus tokens. */
.fde-lab{margin:2rem 0;padding:clamp(1rem,3vw,1.75rem);border:1px solid var(--border-soft);border-radius:16px;background:var(--paper-1,#fff);color:var(--ink-2,#2e2925);font-size:1rem;line-height:1.6;overflow:hidden;}
.fde-lab *{box-sizing:border-box;}
.fde-lab__head>p{margin:0 0 .4rem;color:var(--text-accent,#aa330a);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;font-weight:700;}
.fde-lab__head h2{margin:0;color:var(--ink-1,#1a1613);font-size:clamp(1.4rem,4vw,2rem);line-height:1.2;letter-spacing:-.025em;}
.fde-lab__scenario{max-width:76ch;margin:1rem 0;}
.fde-lab__truth{padding:.85rem 1rem;margin:1rem 0 1.5rem;border-left:3px solid var(--text-accent,#aa330a);background:var(--paper-2,#f1ede7);font-size:.86rem;color:var(--ink-2,#2e2925);}
.fde-lab__controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem 1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-soft);}
.fde-lab__control{display:flex;flex-direction:column;gap:.6rem;min-width:0;font-weight:600;font-size:.9rem;color:var(--ink-1,#1a1613);}
.fde-lab__control>span{display:flex;justify-content:space-between;gap:.7rem;align-items:start;}
.fde-lab__control output{font-variant-numeric:tabular-nums;color:var(--text-accent,#aa330a);white-space:nowrap;font-weight:700;}
.fde-lab__control input[type=range]{accent-color:var(--text-accent,#aa330a);width:100%;height:32px;cursor:pointer;margin:0;}
.fde-lab__control select{width:100%;min-height:44px;padding:.6rem .8rem;border:1px solid var(--border-strong,var(--border-soft));border-radius:6px;background:var(--paper-1,#fff);color:var(--ink-1,#1a1613);font:inherit;}
.fde-lab fieldset{min-width:0;border:1px solid var(--border-soft);border-radius:8px;padding:.65rem 1rem;grid-column:1/-1;margin:0;}
.fde-lab legend{font-size:.82rem;font-weight:700;color:var(--ink-3,#5f5750);padding:0 .4rem;}
.fde-lab__check{display:flex;align-items:flex-start;gap:.65rem;min-height:44px;padding:.6rem 0;font-size:.9rem;cursor:pointer;}
.fde-lab__check input{flex:0 0 auto;width:18px;height:18px;margin:3px 0 0;accent-color:var(--text-accent,#aa330a);}
.fde-lab__geometry{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem 1.5rem;}
.fde-lab__geometry>.fde-lab__check{grid-column:1/-1;}
.fde-lab :is(input,select,button,a,summary,[tabindex]):focus-visible{outline:3px solid var(--text-accent,#aa330a);outline-offset:3px;}
.fde-lab__results{padding-top:1.25rem;}
.fde-lab__results>p{font-size:.94rem;}
.fde-lab__facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:1rem;margin:.2rem 0 1.5rem;}
.fde-lab__facts>div{border-top:2px solid var(--border-soft);padding:.6rem 0;min-width:0;}
.fde-lab__facts dt{font-size:.76rem;color:var(--ink-3,#5f5750);line-height:1.4;}
.fde-lab__facts dd{font-size:1.3rem;font-weight:750;color:var(--ink-1,#1a1613);margin:.35rem 0 0;line-height:1.3;overflow-wrap:anywhere;font-variant-numeric:tabular-nums;}
.fde-lab__table{max-width:100%;overflow-x:auto;margin:1rem 0;border:1px solid var(--border-soft);border-radius:8px;overscroll-behavior-x:contain;}
.fde-lab__table table{width:100%;border-collapse:collapse;text-align:left;font-size:.84rem;}
.fde-lab__table caption{text-align:left;padding:.8rem 1rem;font-weight:650;color:var(--ink-1,#1a1613);background:var(--paper-2,#f1ede7);}
.fde-lab__table th,.fde-lab__table td{padding:.65rem .85rem;border-bottom:1px solid var(--border-soft);vertical-align:top;white-space:normal;min-width:65px;}
.fde-lab__table th{color:var(--ink-1,#1a1613);font-weight:650;}
.fde-lab__table tr:last-child :is(th,td){border-bottom:0;}
.fde-lab__tables{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;}
.fde-lab__finding{padding:1rem;border:1px solid var(--border-soft);border-left:3px solid var(--ink-3,#5f5750);border-radius:0 8px 8px 0;}
.fde-lab__finding[data-state=risk]{border-left-color:var(--text-accent,#aa330a);}
.fde-lab__finding[data-state=good]{border-left-color:var(--ink-1,#1a1613);}
.fde-lab__finding strong{color:var(--ink-1,#1a1613);}
.fde-lab__formula{padding:.9rem 1rem;border:1px dashed var(--border-soft);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere;}
.fde-lab__challenge{margin:1.5rem 0 1rem;color:var(--ink-1,#1a1613);font-size:.95rem;}
.fde-lab__footer{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-top:1rem;border-top:1px solid var(--border-soft);}
.fde-lab__footer button{border:1px solid var(--border-strong,var(--border-soft));border-radius:6px;background:var(--paper-1,#fff);color:var(--ink-1,#1a1613);padding:.65rem 1rem;min-height:44px;font:inherit;font-size:.88rem;font-weight:650;cursor:pointer;}
.fde-lab__footer button:hover{background:var(--paper-2,#f1ede7);}
.fde-lab__footer a{color:var(--text-accent,#aa330a);text-underline-offset:.2em;font-size:.88rem;display:inline-flex;align-items:center;min-height:44px;}
.fde-lab__status{margin:.5rem 0 0;min-height:1.3em;color:var(--ink-3,#5f5750);font-size:.78rem;}
.fde-scene{margin:1rem 0 1.5rem;border:1px solid var(--border-soft);border-radius:10px;padding:.75rem;background:var(--paper-1,#fff);}
.fde-scene__viewport{max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;}
.fde-scene svg{display:block;width:100%;min-width:600px;height:auto;overflow:visible;}
.fde-scene__edge{stroke:var(--ink-3,#5f5750);stroke-width:1.8;fill:none;}
.fde-scene__arrow{fill:var(--ink-3,#5f5750);}
.fde-scene__node{fill:var(--paper-1,#fff);stroke:var(--text-accent,#aa330a);stroke-width:1.4;}
.fde-scene__side{fill:var(--paper-2,#f1ede7);stroke:var(--border-strong,var(--border-soft));stroke-width:1;}
.fde-scene text{fill:var(--ink-1,#1a1613);font-family:inherit;font-size:13px;font-weight:700;}
.fde-scene figcaption{font-size:.79rem;color:var(--ink-3,#5f5750);line-height:1.5;padding:.4rem;}
.fde-scene figcaption strong{color:var(--ink-2,#2e2925);}
.fde-scene details{border-top:1px solid var(--border-soft);margin-top:.5rem;padding:.5rem .4rem;font-size:.85rem;}
.fde-scene summary{min-height:34px;cursor:pointer;color:var(--text-accent,#aa330a);padding:.35rem 0;}
.fde-scene details p{margin:.4rem 0;}
.fde-confusion{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border-soft);border:1px solid var(--border-soft);border-radius:8px;overflow:hidden;margin:0 0 1.5rem;}
.fde-confusion>div{padding:1rem;background:var(--paper-1,#fff);display:flex;flex-direction:column;gap:.25rem;}
.fde-confusion span{font-size:.85rem;font-weight:650;color:var(--ink-1,#1a1613);}
.fde-confusion strong{font-size:2.2rem;line-height:1.2;font-variant-numeric:tabular-nums;color:var(--text-accent,#aa330a);}
.fde-confusion small{font-size:.74rem;color:var(--ink-3,#5f5750);}
.fde-queue-bars{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));align-items:end;gap:.5rem;height:160px;margin:1.5rem 0;}
.fde-queue-bars>div{height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:.2rem;min-width:0;}
.fde-queue-bars span{height:calc(var(--fde-bar)*.7);width:100%;max-width:35px;background:var(--text-accent,#aa330a);border-radius:3px 3px 0 0;min-height:2px;}
.fde-queue-bars b{font-size:.75rem;font-variant-numeric:tabular-nums;color:var(--ink-1,#1a1613);}
.fde-queue-bars small{font-size:.68rem;white-space:nowrap;color:var(--ink-3,#5f5750);}
.fde-budget{height:18px;border:1px solid var(--border-soft);border-radius:3px;overflow:hidden;background:var(--paper-2,#f1ede7);margin:1rem 0;}
.fde-budget span{height:100%;width:var(--fde-used);display:block;background:var(--text-accent,#aa330a);}
@media(max-width:640px){.fde-lab__controls,.fde-lab__geometry,.fde-lab__tables{grid-template-columns:1fr;}.fde-lab__facts{grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem;}.fde-lab__facts dd{font-size:1.1rem;}.fde-lab__table table{font-size:.78rem;}.fde-lab__table th,.fde-lab__table td{padding:.55rem .6rem;}.fde-scene{padding:.45rem;}.fde-scene svg{min-height:175px;}.fde-queue-bars{gap:.25rem;}.fde-lab__footer{align-items:stretch;}.fde-lab__footer button{width:100%;}.fde-lab__footer a{justify-content:center;width:100%;}}
@media(prefers-reduced-motion:reduce){.fde-lab *,.fde-lab *::before,.fde-lab *::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}}
:root:is([data-motion=reduced],[data-motion=off]) .fde-lab *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
@media(forced-colors:active){.fde-scene__node,.fde-scene__side{fill:Canvas;stroke:CanvasText;}.fde-scene__edge{stroke:CanvasText;}.fde-scene__arrow,.fde-scene text{fill:CanvasText;}.fde-budget span,.fde-queue-bars span{background:Highlight;}}