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/* Executable study desk: the draft, its receipt and an identified A/B pair. */
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span{color:var(--muted)}.case-evidence{scroll-margin-top:25px}.case-evidence>.section-title{margin-bottom:20px}.case-scope{max-width:900px}.case-empty{padding:30px;border:1px dashed var(--line);border-radius:10px}.case-form button:disabled{cursor:default}.case-workbench>section{min-width:0}
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.case-field{display:grid;gap:9px}

/* Evidence instruments: actual premise arrows, a finite matrix and grounded conditions. */
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@media(max-width:1050px){.premise-cards{grid-template-columns:repeat(3,minmax(0,1fr))}.visual-workspace{grid-template-columns:minmax(0,1.6fr) minmax(220px,1fr)}}
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@media(max-width:480px){.proof-visual,.premise-board,.case-matrix{padding:20px}.premise-cards{grid-template-columns:1fr}.premise-card{display:grid;grid-template-columns:34px 1fr;gap:10px 14px;padding:16px}.premise-number{grid-row:1/4;margin:0;font-size:25px}.premise-card h3{min-height:0;margin:0;font-size:16px}.premise-card .status,.premise-card>p,.premise-card>button,.premise-card details{grid-column:2;margin:0}.premise-card>button{width:auto;justify-self:start}.visual-legend{gap:7px;font-size:11px}.visual-scroll{padding:15px}.matrix-preview{padding:17px}.case-matrix th{font-size:12px}.matrix-cell{height:95px}}
@media(min-width:1100px){.visual-level{width:190px}.visual-levels{gap:40px}}