/* Controlled studies and physically projected measurement graphics. */
.comparison-section{margin-top:42px;padding-top:34px;border-top:1px solid var(--line)}
.study-toolbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap;padding:16px 0}.study-toolbar>label{font-size:12px;font-weight:600}.study-toolbar select{min-width:190px;padding:10px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--ink)}
.study-status{font-size:13px;line-height:1.7;color:var(--ink);margin:4px 0}.study-protocol{font-size:12px;line-height:1.8;color:var(--muted);max-width:920px}.trial-slots{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}.trial-slot{border:1px solid var(--line);border-top:3px solid #c85a2b;border-radius:9px;padding:20px;background:var(--surface)}.trial-b{border-top-color:#387d9b}.trial-heading{display:flex;justify-content:space-between;gap:12px;align-items:center}.trial-heading strong{font-family:'Source Serif 4',serif;font-size:25px}.trial-heading span{font:9px 'JetBrains Mono',monospace;letter-spacing:.08em;color:var(--muted)}.trial-slot p{font-size:13px;line-height:1.7;margin:12px 0}.trial-value{font-size:13px;font-weight:600;line-height:1.7}.trial-slot small{display:block;font:10px/1.9 'JetBrains Mono',monospace;color:var(--muted);margin:8px 0}.trial-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:16px}.compare-verdict{border-left:3px solid #a0a78f;background:var(--surface);padding:15px 18px;font-size:13px;line-height:1.7}.compare-verdict.valid{border-color:#55836f}.compare-verdict p{margin:5px 0 0;color:var(--muted)}.comparison-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin-top:22px}.comparison-grid canvas{display:block;width:100%;height:170px}.comparison-table{width:100%;border-collapse:collapse;margin-top:18px;font-size:12px}.comparison-table th,.comparison-table td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap}.comparison-table th:first-child,.comparison-table td:first-child{text-align:left}.comparison-table td:not(:first-child){font-family:'JetBrains Mono',monospace;font-size:11px}.comparison-table th{color:var(--muted);font-weight:500}.amplitude-value{font:10px/1.8 'JetBrains Mono',monospace;color:var(--muted);padding-top:5px}input[type=range]:disabled{opacity:.28;cursor:not-allowed}.parameter:has(input:disabled) label:after{content:' · LOCKED';font:8px Inter,sans-serif;color:var(--muted)}
#spatial-overlay{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:hidden;z-index:2}#spatial-overlay text{font:9px 'JetBrains Mono',monospace;fill:#3d5957;paint-order:stroke;stroke:#eeeee8;stroke-width:3px;stroke-linejoin:round}#spatial-overlay .scale-label{font-size:9px;fill:#687761}#spatial-overlay path,#spatial-overlay circle{vector-effect:non-scaling-stroke}.geometry-line,.lever-arm{stroke:#4e8c8b;stroke-width:1;fill:none}.lever-arm{stroke-dasharray:3 3}.gap-line{stroke:#76928e;stroke-width:1;stroke-dasharray:2 4;fill:none}.support-dot{fill:#347f84;stroke:#f4f6ec;stroke-width:1.5}.surface-target{stroke:#518680;fill:#eeeee8;stroke-width:1}.support-trace{fill:none;stroke:#569894;stroke-width:1.5;opacity:.65}.rotation-axis{stroke:#628f95;stroke-width:1;stroke-dasharray:3 2;fill:none}.axis-dot{fill:#eeeee8;stroke:#518187;stroke-width:1}.spin-arc,.normal-arrow{fill:none;stroke:#367e83;stroke-width:1.5}.apex-guide{stroke:#a08b65;stroke-width:.8;stroke-dasharray:2 5;fill:none;opacity:.65}.apex-point{fill:#f5f0de;stroke:#95743b;stroke-width:1.5}.ruler-line{stroke:#82917b;stroke-width:.9;fill:none}.spatial-readout{position:absolute;right:14px;bottom:29px;z-index:3;display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end;max-width:calc(100% - 24px);padding:6px 9px;background:#eef0e5da;border:1px solid #bfcbbc80;border-radius:4px;color:#395654;font:9px 'JetBrains Mono',monospace;pointer-events:none}.spatial-readout b{font-size:8px;font-weight:500;opacity:.75}.scene-note{max-width:60%;pointer-events:none}.viewport-legend{z-index:4}#world-scale{display:none}
.formula-binding{padding:22px 24px;margin:18px 0 30px;border:1px solid var(--line);border-radius:9px;background:var(--surface);font-family:Inter,sans-serif}.binding-head{display:flex;justify-content:space-between;gap:16px;align-items:baseline;flex-wrap:wrap}.binding-head>span:last-child{font-size:12px;color:var(--muted)}.formula-binding .eyebrow{font-size:9px}.formula-binding .math{font-size:13px;margin:14px 0;overflow-x:auto;overflow-y:hidden}.formula-binding p{font:12px/1.9 Inter,sans-serif!important;max-width:900px}.formula-binding .button{font-size:11px;margin-top:8px}.binding-values{min-width:0}.formula-binding .katex-display{text-align:left;margin:.8em 0}.formula-binding .katex-display>.katex{text-align:left}.theory-figure{margin-bottom:12px}
@media(min-width:1500px){.comparison-grid canvas{height:195px}}@media(max-width:1150px){.comparison-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.spatial-readout{gap:7px;font-size:8px}.spatial-readout span:last-child{display:none}}@media(max-width:640px){.trial-slots,.comparison-grid{grid-template-columns:1fr}.trial-slot{padding:16px}.formula-binding{padding:16px}.study-toolbar{gap:10px}.study-toolbar select{min-width:0;flex:1}.study-toolbar #study-start{width:100%}.comparison-table td,.comparison-table th{padding:10px 8px}.spatial-readout{left:10px;right:auto;bottom:34px}.scene-note{font-size:8px}.comparison-section .section-header{gap:12px;flex-wrap:wrap}#spatial-overlay text{font-size:8px}}

.derivation .formula-binding .math{min-height:0;padding:0;margin:10px 0;font-size:13px}.derivation .formula-binding .katex-display{margin:.65em 0}.study-adjust{padding:18px 20px;border:1px solid var(--line);border-radius:8px;background:var(--surface);margin:14px 0 0}.study-adjust label{display:flex;justify-content:space-between;gap:12px;font-size:12px;margin-bottom:14px}.study-adjust output{font-family:'JetBrains Mono',monospace;font-size:11px}.study-adjust input{width:100%}.study-adjust small{display:block;color:var(--muted);font-size:10px;margin-top:9px}
.table-scroll{width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.comparison-section .section-header>.trial-actions{margin-top:0}.comparison-table{min-width:450px}