:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:#edf6ff;background:#09131d;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}html,body{background:#09131d;min-width:320px;min-height:100%;margin:0}body{overflow:hidden}button,input,select{font:inherit;color:#edf6ff}button{cursor:pointer;background:#0c2231f0;border:1px solid #97c2de45;border-radius:.62rem;flex:1;min-height:2.35rem;padding:.48rem .45rem;font-size:.63rem}button:hover,button:focus-visible{background:#18465bf5;border-color:#72d5f7;outline:none}button:disabled{cursor:not-allowed;opacity:.42}select{background:#030e17cc;border:1px solid #97c2de45;border-radius:.55rem;min-height:2rem;padding:.35rem .45rem;font-size:.62rem}#physics-rapier-solver-app,#scene-shell,#scene-shell canvas{width:100vw;height:100vh}#physics-rapier-solver-app{background:radial-gradient(circle at 75% 18%,#4ab9cd30,#0000 34rem),radial-gradient(circle at 65% 92%,#ffa1581f,#0000 30rem),#09131d;position:relative;overflow:hidden}#scene-shell,#scene-shell canvas{display:block;position:absolute;inset:0}.study-hud{z-index:2;background:linear-gradient(90deg,#09131dfc,#09131df0 82%,#09131d00 100%);width:min(520px,100vw);padding:1rem 1rem 1.2rem;position:absolute;inset:0 auto 0 0;overflow-y:auto}.back-link{color:#a9def1;font-size:.74rem;text-decoration:none}.back-link:hover{color:#fff}.eyebrow{color:#72d5f7;letter-spacing:.18em;margin-top:1.4rem;font-size:.66rem;font-weight:800}h1{letter-spacing:-.06em;max-width:500px;margin:.5rem 0 .55rem;font-size:clamp(2.25rem,5vw,3.7rem);line-height:.96}.intro{color:#b8cbd7;max-width:500px;margin:0 0 .9rem;font-size:.82rem;line-height:1.5}.status-panel,.control-card,.contract-card,.capability-card{-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);background:#0e2231e6;border:1px solid #8cbed93d;border-radius:.8rem;max-width:505px;margin:.6rem 0;padding:.76rem;box-shadow:0 1.3rem 3rem #0000003b}.control-card{border-color:#ffbe7966}.contract-card{border-color:#72d5f759}.capability-card{border-color:#bfabff59}.status-line,.button-row,.card-heading,.check-row,.select-row{justify-content:space-between;align-items:center;gap:.5rem;display:flex}.status-pill,.backend-pill{color:#e0f6ff;background:#30749240;border-radius:999px;align-items:center;gap:.35rem;padding:.28rem .54rem;font-size:.68rem;font-weight:750;display:inline-flex}.status-pill i{background:#74e1bb;border-radius:50%;width:.42rem;height:.42rem;box-shadow:0 0 .75rem #74e1bb}.backend-pill{color:#c8d9f3;background:#687cae33}.status-detail{color:#9bb3c3;margin:.5rem 0 0;font-size:.68rem;line-height:1.4}.metrics{grid-template-columns:repeat(8,minmax(0,1fr));gap:.3rem;margin:.68rem 0 0;display:grid}.metrics>div{background:#030c148c;border-radius:.48rem;min-width:0;padding:.4rem .32rem}dt{color:#7895a5;letter-spacing:.05em;text-transform:uppercase;font-size:.45rem}dd{color:#eef8ff;font-variant-numeric:tabular-nums;text-overflow:ellipsis;white-space:nowrap;margin:.16rem 0 0;font-size:.58rem;overflow:hidden}.card-heading strong{letter-spacing:.02em;font-size:.73rem}.card-heading span,.card-detail{color:#8faaba;font-size:.59rem}.button-row{margin-top:.5rem}.secondary-row button{color:#c5d8e4}.select-row{color:#a6bbc8;justify-content:space-between;margin-top:.58rem;font-size:.62rem}.select-row select{min-width:10rem}.check-row{color:#a6bbc8;justify-content:flex-start;margin-top:.58rem;font-size:.62rem}.check-row input{accent-color:#72d5f7}.card-detail{margin:.48rem 0 0;line-height:1.42}.contract-row,.capability-row{color:#a3bac8;justify-content:space-between;align-items:center;gap:.65rem;margin-top:.45rem;font-size:.62rem;display:flex}.contract-row code{color:#ffe0af;font-size:.59rem}.contract-row span{text-align:right}.capability-row strong{color:#e4dbff;text-align:right;font-size:.62rem;font-weight:650}.lane-table{gap:.38rem;margin-top:.58rem;display:grid}.lane-row{background:#030c147a;border:1px solid #8cbed924;border-radius:.48rem;grid-template-columns:minmax(6.3rem,1.35fr) repeat(4,minmax(2.2rem,.8fr));align-items:center;gap:.32rem;padding:.38rem .42rem;font-size:.55rem;display:grid}.lane-row.selected{background:#2244579e;border-color:#72d5f7b8}.lane-name{color:#e6f6ff;font-weight:700}.lane-name small{color:#86aabd;margin-top:.12rem;font-size:.47rem;font-weight:500;display:block}.lane-cell{color:#b8cad5;font-variant-numeric:tabular-nums;text-align:right;min-width:0}.lane-cell strong{color:#f2f7ff;font-size:.56rem;font-weight:650;display:block}.lane-head{color:#7895a5;letter-spacing:.04em;text-transform:uppercase;font-size:.43rem}.error-panel{color:#ffd8d8;background:#4d1723cc;border:1px solid #ff7c7c94;border-radius:.65rem;max-width:505px;margin-top:.6rem;padding:.72rem;font-size:.68rem}.error-panel[hidden]{display:none}.error-panel strong{margin-bottom:.25rem;display:block}.hint{color:#718b9c;max-width:505px;margin:.7rem 0 .45rem;font-size:.62rem;line-height:1.4}.signature{color:#b6cce075;letter-spacing:.16em;text-align:right;pointer-events:none;margin:.8rem 0 .25rem;font-size:.61rem}code{color:#ffe0af;font-size:.6rem}@media (width<=760px){body{overflow:auto}#physics-rapier-solver-app,#scene-shell,#scene-shell canvas{height:100%;min-height:2350px}.study-hud{background:linear-gradient(#09131dfa,#09131de6);width:100%;min-height:2350px;position:relative}.metrics{grid-template-columns:repeat(4,minmax(0,1fr))}.lane-row{grid-template-columns:minmax(5.3rem,1.2fr) repeat(4,minmax(1.8rem,.7fr))}}