:root{color-scheme:light;--ink:#16273e;--muted:#596d80;--green:#087f68;--blue:#2766b1;--rule:#d8e1e9;--wash:#f2f6fa;font:16px/1.6 Arial,Helvetica,sans-serif;color:var(--ink);background:#f9fbfc}*{box-sizing:border-box}body{margin:0}a{color:var(--green);text-underline-offset:4px}a:hover{color:#055847}button,input,select{font:inherit}button,select{border:1px solid #b8c9d4;border-radius:7px;background:#fff;color:var(--ink)}button{cursor:pointer;font-weight:600;padding:8px 13px}button:hover{background:var(--wash)}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,.measurement:focus-visible{outline:3px solid #2766b1;outline-offset:4px}button:disabled{cursor:default;opacity:.5}select{width:100%;padding:8px;margin-top:5px}nav{display:flex;justify-content:space-between;gap:20px;font-size:14px}.page-header{max-width:1250px;margin:auto;padding:30px 40px 50px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--green);margin:0 0 8px}.page-header .eyebrow{margin-top:74px}h1{font-size:clamp(42px,5.8vw,76px);line-height:1.08;letter-spacing:-.035em;margin:16px 0 28px;font-weight:700}h1 em{font-style:normal;color:var(--green)}.lead{font-size:21px;line-height:1.65;max-width:840px}.source-line{font-size:14px;color:var(--muted)}h2{font-size:29px;line-height:1.2;letter-spacing:-.025em;margin:0 0 18px}h3{font-size:18px;line-height:1.35;margin:0 0 14px}.lab{max-width:1440px;margin:0 auto;padding:30px 32px 36px;border:1px solid var(--rule);border-radius:16px;background:#fff;box-shadow:0 12px 50px #16273e06}.lab-heading,.panel-heading{display:flex;justify-content:space-between;align-items:center;gap:18px}.lab-heading h2{margin-bottom:0}.lab-intro{color:var(--muted);margin:14px 0 26px;font-size:15px}.lab-grid{display:grid;grid-template-columns:245px minmax(0,1fr);gap:30px}.controls{padding:20px;background:var(--wash);border-radius:10px;align-self:start;display:grid;gap:20px}.control{display:block;font-size:13px;font-weight:700}.control output,.position output{float:right;color:var(--blue);font-variant-numeric:tabular-nums}.control span{font-size:11px;line-height:1.5;font-weight:400;display:block;color:var(--muted);margin-top:4px}input[type=range]{width:100%;display:block;margin:12px 0 3px;accent-color:var(--green);cursor:pointer;min-height:20px}.position{min-width:0;padding:12px;border:1px solid #c9d6df;border-radius:7px;font-size:12px}.position legend{padding:0 5px;font-weight:700}.position label{display:block;margin:4px 0 12px}.position select{font-size:12px}.check{display:flex;gap:8px;align-items:center;font-size:12px;line-height:1.4}.check input{accent-color:var(--green);width:16px;height:16px}.scene-summary{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);padding:0 6px 8px;gap:12px}.scene-summary strong{color:var(--ink);font-variant-numeric:tabular-nums}.plot{width:100%;border:1px solid var(--rule);border-radius:12px;overflow:hidden;user-select:none}.plot svg{display:block;width:100%;height:auto;font-family:Arial,Helvetica,sans-serif}.measurement{cursor:grab;touch-action:none}.measurement:active{cursor:grabbing}.measurement:focus{outline:none}.measurement:focus .selection-ring{stroke:#2766b1;stroke-width:3}.legend{display:flex;flex-wrap:wrap;gap:10px 20px;padding:12px 2px 4px;font-size:11px;color:var(--muted)}.legend span{display:inline-flex;align-items:center;gap:7px}.legend i{display:inline-block;width:10px;height:10px;border:2px solid var(--green)}.legend .circle{border-radius:50%}.legend .diamond{background:var(--green);transform:rotate(45deg);width:9px;height:9px}.legend .square{border-style:dashed}.legend .dot{border-color:var(--ink);background:var(--ink);border-radius:50%;width:7px;height:7px}.plot-note{font-size:11px;color:var(--muted);margin:6px 0 16px;line-height:1.6}.insight{font-size:14px;background:#eaf5f1;border-left:3px solid var(--green);padding:13px 16px;margin:0 0 22px}.results-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.95fr);gap:20px}.panel{border:1px solid var(--rule);border-radius:10px;padding:20px;min-width:0}.panel p:not(.eyebrow){font-size:11px;color:var(--muted);line-height:1.6}.panel-heading{align-items:flex-start}.panel-heading button{font-size:11px}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:12px;white-space:nowrap;font-variant-numeric:tabular-nums}th,td{text-align:right;padding:8px 6px;border-bottom:1px solid #e7edf1}th:first-child,td:first-child{text-align:left}thead th{font-size:11px;color:var(--muted);font-weight:400}tbody th{font-weight:700}.track-a{color:#087f68}.track-b{color:#9a570e}.clutter th,.clutter td{color:var(--muted);font-size:11px}.prob-cell{background:linear-gradient(90deg,#eaf5f1 var(--fill),transparent var(--fill))}.pda-table{margin-top:16px}.pda-table h4{font-size:12px;margin:10px 0 3px}.overbooked{color:#a43131;font-weight:700}.events{display:grid;gap:5px;max-height:280px;overflow:auto;padding:4px 5px 4px 3px}.event{position:relative;isolation:isolate;display:flex;justify-content:space-between;gap:8px;text-align:left;font-size:12px;padding:7px 9px;border:1px solid #e1e9ee;border-radius:5px;overflow:hidden;font-variant-numeric:tabular-nums}.event:before{content:'';position:absolute;inset:0 auto 0 0;width:var(--probability);background:#eaf1f8;z-index:-1}.event[aria-pressed=true]{border-color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue)}.event b{font-weight:400;color:var(--blue)}.event span{white-space:nowrap}.update-panel{margin-top:20px}.updates{display:grid;grid-template-columns:1fr 1fr;gap:25px;font-size:12px}.updates h4{margin:0 0 8px;font-size:15px}.updates dl{margin:0;display:grid;grid-template-columns:1fr auto;gap:6px}.updates dt{color:var(--muted)}.updates dd{margin:0;font-variant-numeric:tabular-nums}.article{max-width:910px;margin:80px auto;padding:0 30px}.article section{margin-bottom:65px}.article p{color:#3e5265}.equation{padding:22px 15px;overflow-x:auto;border:1px solid var(--rule);border-radius:10px;background:white;font-size:17px;margin:24px 0}.equation mjx-container{margin:0!important}.references{padding-left:22px}.references li{padding-left:8px;margin:24px 0;font-size:15px}.references span{color:var(--muted);font-size:13px}.primary-link{font-weight:700}.page-footer{padding:28px 40px;border-top:1px solid var(--rule);display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}.sr-only,.skip:not(:focus){position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip:focus{position:fixed;z-index:20;top:10px;left:10px;background:white;padding:10px}.embedded .page-header,.embedded .article,.embedded .page-footer,.embedded .skip{display:none}.embedded body{background:white}.embedded .lab{max-width:none;border:0;border-radius:0;box-shadow:none;padding:22px}.embedded .lab-heading h2{font-size:23px}.embedded .lab-intro{font-size:13px}.embedded .lab-grid{grid-template-columns:215px minmax(0,1fr);gap:20px}.embedded .controls{padding:16px;gap:15px}.embedded .panel{padding:16px}.embedded .results-grid{gap:14px}
@media(min-width:1550px){.lab{margin-left:auto;margin-right:auto}}@media(max-width:1490px){.lab{margin-left:24px;margin-right:24px}.embedded .lab{margin:0}}@media(max-width:1050px){.results-grid{grid-template-columns:1fr}.events{max-height:220px}.lab-grid{gap:22px;grid-template-columns:220px minmax(0,1fr)}}@media(max-width:760px){.page-header{padding:24px 22px 28px}.page-header .eyebrow{margin-top:45px}nav{font-size:12px}.lead{font-size:17px}.lab{margin:0 10px;padding:22px 16px}.lab-heading{align-items:flex-start;gap:10px}.lab-heading h2{font-size:24px}.lab-heading button{font-size:12px;white-space:nowrap}.lab-grid,.embedded .lab-grid{grid-template-columns:1fr}.controls{grid-template-columns:1fr 1fr;gap:20px;padding:16px}.full{grid-column:1/-1}.position{display:grid;grid-template-columns:1fr 1fr;gap:12px}.position label:first-of-type{grid-column:1/-1;margin-bottom:0}.position label{margin-bottom:0}.check{font-size:13px}.scene-summary{font-size:11px}.panel{padding:16px}.legend{gap:8px 14px}.plot-note{font-size:11px}.article{padding:0 22px;margin-top:55px}.article section{margin-bottom:45px}.equation{font-size:14px}.page-footer{padding:24px;flex-direction:column;gap:8px}.embedded .lab{padding:16px}.embedded .controls{grid-template-columns:1fr 1fr}.updates{gap:16px}.updates dl{grid-template-columns:1fr;gap:2px}.updates dd{margin-bottom:7px}}
@media print{body{background:white}.controls,.lab-heading button,nav,.page-footer,.events button,#clear-event,.skip{display:none!important}.page-header,.lab,.article{margin:0;padding:16px;border:0;box-shadow:none}.page-header .eyebrow{margin-top:10px}h1{font-size:32px}.lead{font-size:14px}.lab-grid{display:block}.plot{max-width:600px;margin:auto}.results-grid{grid-template-columns:1fr 1fr}.panel,.article section{break-inside:avoid}.article{max-width:none}.article section{margin:28px 0}.equation{font-size:12px}a{color:inherit}.events-panel:after{content:'Feasible events assign each return to at most one target; unassigned returns are clutter.';font-size:12px}}