:root{color:#171717;font-synthesis:none;text-rendering:optimizelegibility;--paper:#f5efe5;--ink:#171717;--muted:#6f6a61;--line:#b8b0a3;--soft:#ffffff57;--brand:#e44884;--green:#4e7b55;--orange:#9a6522;--red:#a43d32;--mono:"Courier New", Consolas, monospace;background:#f5efe5;font-family:Arial,Helvetica,sans-serif}*{box-sizing:border-box}html{background:var(--paper);min-width:320px;min-height:100%}body{background:var(--paper);min-width:320px;min-height:100vh;margin:0}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.42}a{color:inherit}h1,h2,h3,p{margin-top:0}h1{letter-spacing:-.095em;text-transform:uppercase;margin:0;font:800 clamp(3.4rem,8vw,6.3rem)/.8 Arial,sans-serif}h2{letter-spacing:-.035em;margin-bottom:8px;font-size:clamp(1.35rem,3vw,2rem);line-height:1.05}h3{margin:24px 0 8px}p{color:var(--muted);line-height:1.55}code{font-family:var(--mono);background:#0000000f;padding:2px 5px}.app-shell{width:min(1180px,100%);margin:0 auto;padding:22px 26px 40px}.source-video{opacity:.001;pointer-events:none;width:2px;height:2px;position:fixed;top:-10px;left:-10px}.app-header{border-bottom:3px solid var(--ink);grid-template-columns:1.35fr .65fr;align-items:end;gap:32px;min-height:330px;padding:38px 0 28px;display:grid}.hero-copy{align-self:end}.intro{max-width:500px;color:var(--ink);margin:24px 0 0;font-size:1.08rem}.eyebrow{color:var(--brand);font:700 .72rem/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;margin-bottom:10px}.session-signal{border:0;border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);width:100%;min-height:190px;color:var(--ink);text-align:left;touch-action:none;background:0 0;grid-template-rows:auto 1fr auto;gap:8px;padding:12px 0;display:grid}.session-signal svg{width:100%;height:120px;overflow:visible}.session-signal svg line{stroke:var(--line);stroke-width:.45px}.session-signal svg polyline{fill:none;stroke:var(--brand);stroke-width:1.2px;vector-effect:non-scaling-stroke}.session-signal svg circle{fill:var(--ink)}.session-signal:focus-visible{outline:3px solid var(--brand);outline-offset:4px}.signal-playing svg polyline{stroke-width:2px}.signal-meta,.signal-hint{font:700 .67rem var(--mono);letter-spacing:.06em;text-transform:uppercase}.signal-hint{color:var(--muted);text-align:right}.app-nav{justify-content:space-between;align-items:center;gap:18px;padding:13px 0 46px;display:flex}.header-status{flex-wrap:wrap;gap:14px;display:flex}.status-pill{color:var(--muted);font:700 .68rem var(--mono);text-transform:uppercase;align-items:center;gap:7px;display:inline-flex}.status-pill:before{content:"";border:1px solid;border-radius:50%;width:7px;height:7px}.status-good{color:var(--green)}.status-warn{color:var(--orange)}.status-bad{color:var(--red)}.options-button{color:var(--ink);font:700 .75rem var(--mono);background:0 0;border:0;border-bottom:1px solid;padding:5px 0}.options-button:hover{color:var(--brand)}.notice{border-left:5px solid var(--brand);color:var(--ink);background:#ffffff73;justify-content:space-between;align-items:center;gap:14px;margin-bottom:28px;padding:11px 14px;display:flex}.notice button{color:inherit;background:0 0;border:0;text-decoration:underline}.play-layout{grid-template-columns:minmax(0,1fr) minmax(360px,.9fr);gap:34px 46px;display:grid}.single-layout{gap:26px;max-width:960px;margin:0 auto;display:grid}.panel{border-top:2px solid var(--ink);background:0 0;min-width:0;padding:22px 0 12px}.section-heading,.camera-toolbar{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.section-heading>div>p:not(.eyebrow){margin-bottom:0}.control-panel{grid-area:1/1}.camera-panel{grid-area:1/2/span 2}.performance-panel{grid-area:2/1}.tracks-panel{grid-area:3/1/auto/-1}.camera-settings{grid-area:4/1/auto/-1}.single-layout .camera-panel{grid-area:auto}.mode-launch-grid{grid-template-columns:1fr 1fr;gap:10px;margin:22px 0 12px;display:grid}.mode-launch{border:1px solid var(--line);min-height:132px;color:var(--ink);text-align:left;background:0 0;align-content:space-between;gap:16px;padding:14px;display:grid}.mode-launch:hover{border-color:var(--ink)}.mode-launch.mode-selected{border:3px solid var(--ink);background:var(--soft);padding:12px}.mode-launch strong{max-width:15ch;font-size:1rem}.mode-launch span{color:var(--muted);font-size:.78rem;line-height:1.4}.start-button{width:100%;min-height:58px;font-size:1.06rem}.hero-actions,.button-row{flex-wrap:wrap;gap:9px;display:flex}.hero-actions{margin:12px 0}.primary-button,.secondary-button,.danger-button{border-radius:0;min-height:40px;padding:8px 13px;font-weight:700}.primary-button{border:2px solid var(--ink);background:var(--brand);color:var(--ink)}.primary-button:hover{background:var(--ink);color:var(--paper)}.secondary-button{border:1px solid var(--ink);color:var(--ink);background:0 0}.secondary-button:hover{background:var(--ink);color:var(--paper)}.danger-button{border:1px solid var(--red);color:var(--red);background:0 0}.danger-button:hover{background:var(--red);color:var(--paper)}.essential-actions{margin-top:18px}.fine-print{color:var(--muted);font-size:.78rem}.step-divider{font:700 .67rem var(--mono);letter-spacing:.08em;text-transform:uppercase;margin:22px 0 8px}.notice-inline{border:1px solid var(--brand);color:var(--ink);margin:16px 0 0;padding:12px;font-size:.82rem}.calibration-callout{justify-content:space-between;align-items:center;gap:12px;display:flex}.advanced-disclosure{margin-top:16px}.advanced-disclosure summary{cursor:pointer;border-bottom:1px solid var(--line);color:var(--muted);font:700 .75rem var(--mono);padding:10px 0;list-style:none}.advanced-disclosure summary::-webkit-details-marker{display:none}.advanced-disclosure summary:before{content:"+ ";color:var(--brand)}.advanced-disclosure[open] summary:before{content:"− "}.start-recovery{margin-top:8px}.transport-grid{grid-template-columns:1fr 1fr;gap:9px;margin-top:12px;display:grid}.transport-grid label,.transport-clock,.settings-grid label{border:1px solid var(--line);background:var(--soft);gap:7px;padding:10px;display:grid}.transport-grid label>span,.transport-clock span,.settings-grid label>span{color:var(--muted);font:700 .66rem var(--mono);letter-spacing:.06em;text-transform:uppercase}.transport-clock strong{font-family:var(--mono)}input[type=range]{width:100%;accent-color:var(--brand)}select,.fidtrack-id-input{border:1px solid var(--ink);background:var(--paper);width:100%;min-height:38px;color:var(--ink);border-radius:0;padding:6px 8px}.camera-frame{border:1px solid var(--ink);background:#111;place-items:center;min-height:310px;margin-top:14px;display:grid;position:relative;overflow:hidden}.camera-frame:before{content:"";z-index:1;pointer-events:none;border:1px solid #ffffff59;position:absolute;inset:12px}.camera-frame-square{aspect-ratio:1;min-height:0}.camera-frame-large{min-height:520px}.camera-frame canvas{object-fit:contain;width:100%;height:100%;max-height:72vh;display:block}.camera-placeholder{z-index:2;color:#aaa;text-align:center;place-items:center;padding:26px;display:grid;position:absolute;inset:0}.mini-stats,.optical-health-grid{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.mini-stats span{color:var(--muted);font:700 .63rem var(--mono)}.optical-health-grid{justify-content:flex-start;margin-top:12px}.detected-strip{gap:6px;padding-top:10px;display:flex;overflow-x:auto}.detected-strip span{border:1px solid var(--line);color:var(--muted);font:.68rem var(--mono);flex:none;padding:5px 7px}.error-text{color:var(--red)}.transport-visualizer{border-top:1px solid var(--line);gap:12px;margin-top:14px;padding:12px 0;display:grid}.transport-visualizer-head{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.transport-visualizer-head div{align-items:baseline;gap:9px;display:flex}.transport-visualizer-head span,.transport-visualizer-head code{color:var(--muted);font:.7rem var(--mono);text-transform:uppercase}.step-strip{grid-template-columns:repeat(16,1fr);gap:3px;display:grid}.step-strip span{border:1px solid var(--line);height:18px}.step-strip span.step-beat{border-color:var(--ink)}.step-strip span.step-current{background:var(--brand)}.active-layer-list{flex-wrap:wrap;gap:6px;min-height:28px;display:flex}.active-layer{border-bottom:3px solid var(--track-color);font:.7rem var(--mono);padding:5px 7px}.active-layer b{color:var(--track-color)}.active-layer-empty{color:var(--muted);font-size:.8rem}.track-grid-wrap{gap:22px;margin-top:22px;display:grid}.sample-set-row{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.sample-set-card{border:1px solid var(--line);min-height:78px;color:var(--ink);text-align:left;background:0 0;gap:4px;padding:11px;display:grid}.sample-set-card:hover{border-color:var(--ink)}.sample-set-card span{color:var(--track-color);font:700 .73rem var(--mono)}.sample-set-card small{color:var(--muted);font:.63rem var(--mono);text-transform:uppercase}.sample-set-card.sample-set-active{border:3px solid var(--ink);padding:9px}.track-lane{gap:8px;display:grid}.track-lane-heading{border-bottom:1px solid var(--ink);justify-content:space-between;align-items:baseline;padding-bottom:5px;display:flex}.track-lane-heading strong{font:700 .78rem var(--mono);letter-spacing:.08em;text-transform:uppercase}.track-lane-heading span{color:var(--muted);font:.65rem var(--mono);text-transform:uppercase}.track-grid{grid-template-columns:repeat(6,1fr);gap:7px;display:grid}.track-card{border:1px solid var(--line);min-height:108px;color:var(--ink);text-align:left;background:0 0;align-content:space-between;padding:10px;display:grid;position:relative;overflow:hidden}.track-card:hover{border-color:var(--ink)}.track-card:before{content:"";background:var(--track-color);height:4px;position:absolute;inset:auto 0 0}.track-card.track-active{border:3px solid var(--ink);background:var(--soft);padding:8px}.track-id{color:var(--track-color);font:700 .72rem var(--mono);justify-self:end}.track-name{font-weight:700;line-height:1.12}.track-category{color:var(--muted);font:.62rem var(--mono);text-transform:uppercase}.empty-panel{border-top:1px dashed var(--line);color:var(--muted);padding:22px 0}.settings-grid{grid-template-columns:repeat(3,1fr);gap:9px;margin-top:14px;display:grid}.settings-grid .checkbox-label{align-items:center;gap:9px;display:flex}.settings-grid .checkbox-label input{width:18px;height:18px;accent-color:var(--brand)}.settings-grid .checkbox-label span{text-transform:none;letter-spacing:0;font-family:inherit}.camera-session-card{border-bottom:1px solid var(--line);justify-content:space-between;gap:12px;padding:9px 0;display:flex}.camera-session-card span{color:var(--muted);font-size:.78rem}.camera-probe-list{grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:8px;margin-top:12px;display:grid}.camera-probe-card{border:1px solid var(--line);min-height:84px;color:var(--ink);text-align:left;background:0 0;gap:5px;padding:10px;display:grid}.camera-probe-card span,.camera-probe-card small{color:var(--muted);font:.68rem var(--mono)}.camera-probe-card.probe-wide{border-color:var(--green)}.inline-button{justify-content:center;width:100%}.sub-tab-bar{z-index:20;border-bottom:2px solid var(--ink);background:var(--paper);grid-template-columns:repeat(3,1fr);margin-bottom:6px;display:grid;position:sticky;top:0}.sub-tab-bar button{min-height:48px;color:var(--muted);font:700 .75rem var(--mono);text-transform:uppercase;background:0 0;border:0}.sub-tab-bar button.tab-active{background:var(--ink);color:var(--paper)}.calibration-markers{grid-template-columns:repeat(4,1fr);gap:7px;margin:16px 0;display:grid}.calibration-marker{border:1px solid var(--orange);gap:3px;padding:11px;display:grid}.calibration-marker strong{color:var(--orange);font:700 1.25rem var(--mono)}.calibration-marker span,.calibration-marker small{color:var(--muted);font-size:.68rem}.calibration-marker.marker-visible{border:3px solid var(--green);padding:9px}.calibration-marker.marker-visible strong{color:var(--green)}.download-list{gap:8px;display:grid}.download-card{border:1px solid var(--ink);gap:4px;padding:13px;text-decoration:none;display:grid}.download-card:hover{background:var(--ink);color:var(--paper)}.download-card span{color:var(--muted);font-size:.82rem}.download-card-head{justify-content:space-between;align-items:center;gap:10px;display:flex}.download-badge{font:700 .68rem var(--mono)}.prose-panel ol,.prose-panel ul{color:var(--muted);line-height:1.65}.dimension-grid{grid-template-columns:1fr 1fr;gap:8px;margin:18px 0;display:grid}.dimension-grid div{border:1px solid var(--line);gap:3px;padding:12px;display:grid}.dimension-grid span{color:var(--muted);font-size:.76rem}.fidtrack-preview{border:1px solid var(--line);background:#fff;place-items:center;margin-top:14px;padding:20px;display:grid}.fidtrack-preview svg{width:160px;height:160px}footer{border-top:1px solid var(--ink);color:var(--muted);font:.65rem var(--mono);justify-content:space-between;gap:14px;margin-top:44px;padding-top:12px;display:flex}.optical-mode-overlay{z-index:1000;place-items:end center;padding:18px;display:grid;position:fixed;inset:0}.optical-white{color:#111;background:#fff}.optical-black{color:#fff;background:#000}.optical-hud{color:#fff;background:#0a0a0aeb;border:1px solid #777;width:min(760px,100%);padding:12px}.optical-hud-head{justify-content:space-between;align-items:center;gap:12px;display:flex}.optical-hud-head div{gap:2px;display:grid}.optical-hud-head span,.optical-hud p{color:#bbb;font-size:.7rem}.optical-hud-head button{color:#fff;background:0 0;border:1px solid #aaa;min-height:36px;padding:6px 10px}.optical-metrics{flex-wrap:wrap;gap:6px;margin-top:9px;display:flex}.optical-metrics span{color:#ccc;font:.66rem var(--mono);border:1px solid #555;padding:4px 6px}.optical-hud .transport-visualizer{border-color:#555;margin-top:9px;padding:9px}.optical-hud-hint{color:#fff;background:#111;padding:6px 9px;font-size:.68rem}@media (width<=860px){.app-header{grid-template-columns:1fr;min-height:0}.session-signal{max-width:520px}.play-layout{grid-template-columns:1fr}.control-panel,.performance-panel,.camera-panel,.camera-settings,.tracks-panel{grid-area:auto/1}.camera-panel{order:2}.performance-panel{order:3}.tracks-panel{order:4}.camera-settings{order:5}.track-grid{grid-template-columns:repeat(3,1fr)}.settings-grid{grid-template-columns:repeat(2,1fr)}}@media (width<=560px){.app-shell{padding:14px 16px 28px}.app-header{padding-top:22px}h1{font-size:13.5vw}.app-nav{flex-direction:column;align-items:flex-start;padding-bottom:32px}.section-heading,.camera-toolbar,.calibration-callout{flex-direction:column;align-items:flex-start}.mode-launch-grid,.transport-grid,.settings-grid,.dimension-grid{grid-template-columns:1fr}.mode-launch{min-height:108px}.sample-set-row,.track-grid,.calibration-markers{grid-template-columns:repeat(2,1fr)}.camera-frame-large{min-height:360px}.camera-session-card,.optical-hud-head{flex-direction:column;align-items:flex-start}footer{display:grid}.optical-mode-overlay{padding:8px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important}}