:root{color-scheme:light;--ink:#263448;--muted:#6d7887;--line:#e0e5eb;--light:#f6f8fa;--gold:#a87821;--gold-soft:#faf5e7;--red:#a84237;--green:#347252;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--ink);background:#fff;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;font-size:14px;line-height:1.5}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:4px}button:disabled{cursor:default;opacity:.48}button:focus-visible,a:focus-visible,input:focus-visible,video:focus-visible{outline:3px solid #c59d43;outline-offset:4px}[hidden]{display:none!important}h1,h2,h3,h4,p{margin:0}.topbar,main,footer{width:min(1456px,calc(100% - 64px));margin:auto}.topbar{height:86px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:9px}.brand img{width:40px;height:40px}.brand span{font:600 28px Georgia,serif;letter-spacing:-.6px}.brand:hover{text-decoration:none}nav{display:flex;gap:28px;font-size:13px;color:var(--muted)}nav a:last-child{color:var(--ink)}.intro{padding:38px 0 28px;display:flex;justify-content:space-between;align-items:center;gap:24px}.eyebrow{color:var(--gold);font-size:10px;letter-spacing:.16em;font-weight:650;text-transform:uppercase}.intro .eyebrow{margin-bottom:10px}h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(27px,3vw,40px);font-weight:400;letter-spacing:-.035em;line-height:1.2}.lede{margin-top:12px;color:var(--muted);font-size:14px}.connection{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted);white-space:nowrap;padding:8px 11px;border:1px solid var(--line);border-radius:24px}.dot,.mini-dot{width:6px;height:6px;border-radius:50%;background:#acb4bc;display:inline-block;flex:none}.connection.online .dot{background:var(--green);box-shadow:0 0 0 3px #3472520a}.connection.offline .dot{background:#b68537}.game-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:22px}.game-tab{text-align:left;display:flex;align-items:center;gap:15px;position:relative;border:1px solid var(--line);border-radius:12px;background:#fff;padding:18px 20px;color:var(--ink);transition:border-color .15s,background .15s;min-width:0}.game-tab:hover{background:var(--light)}.game-tab[aria-selected=true]{background:var(--gold-soft);border-color:#d7bd81}.game-tab>svg{width:32px;height:32px;flex:none;color:var(--muted)}.game-tab[aria-selected=true]>svg{color:var(--gold)}.game-tab strong{font-size:15px;font-weight:620;display:block}.game-tab small{display:block;font-size:11px;color:var(--muted);margin-top:3px}.tab-status{width:6px;height:6px;border-radius:50%;background:var(--gold);margin-left:auto;display:none}.tab-status.active{display:block}.arena-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:14px}.game-heading{display:flex;align-items:center;gap:12px}h2{font-size:19px;font-weight:600;letter-spacing:-.02em}.state-pill{font-size:10px;font-weight:600;color:var(--muted);background:var(--light);padding:4px 9px;border-radius:5px}.state-pill.running{color:var(--gold);background:var(--gold-soft)}.state-pill.success{color:var(--green);background:#eef7f1}.state-pill.failed{color:var(--red);background:#fff1ef}.controls{display:flex;gap:8px;align-items:center}.controls label{font-size:11px;color:var(--muted);display:flex;gap:8px;align-items:center}.controls input{width:110px;font-size:12px;background:#fff;border:1px solid var(--line);border-radius:6px;padding:8px;color:var(--ink);height:36px}.controls input:disabled{background:var(--light);color:var(--muted)}.icon-button{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--muted)}.icon-button:hover{background:var(--light)}.icon-button svg{width:20px;height:20px}.button{border:1px solid var(--line);border-radius:6px;padding:8px 16px;min-height:36px;font-size:12px;font-weight:600;display:inline-flex;align-items:center;gap:9px;background:#fff;color:var(--ink)}.button.start{background:var(--ink);border-color:var(--ink);color:white;min-width:132px;justify-content:center}.button.start:not(:disabled):hover{background:#35465e}.button.start>span{font-size:10px}.button.stop{color:var(--red);border-color:#dcc6c0}.button.stop:hover{background:#fff8f6}.notice{font-size:12px;border:1px solid #e4d4aa;background:#fffbef;color:#80621f;padding:11px 14px;border-radius:7px;margin-bottom:14px;white-space:pre-line}.notice.error{color:var(--red);background:#fff6f4;border-color:#ecd1c9}.arena-grid{display:grid;grid-template-columns:minmax(0,1fr) 365px;gap:20px;align-items:stretch}.game-stage{border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;min-width:0;background:#fff}.stage-top{padding:15px 18px;display:flex;align-items:center;justify-content:space-between;gap:15px;border-bottom:1px solid #edf0f3;font-size:10px;color:var(--muted)}.stage-label{text-transform:uppercase;letter-spacing:.11em}.text-button{border:0;background:none;padding:0;color:var(--muted);font-size:11px}.text-button:hover{color:var(--gold)}.canvas-wrap{position:relative;display:flex;align-items:center;justify-content:center;flex:1;min-height:320px;background:#fff}canvas{width:100%;height:auto;display:block;max-width:100%;background:#fff}.canvas-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:12px;background:#ffffffdf;font-size:12px;color:var(--muted)}.spinner{height:17px;width:17px;border:2px solid var(--line);border-top-color:var(--gold);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.game-caption{border-top:1px solid #edf0f3;padding:14px 18px;font-size:11px;color:var(--muted);display:flex;align-items:center;gap:20px;justify-content:space-between;min-height:50px}.live-source{display:flex;align-items:center;gap:7px;white-space:nowrap;font-size:10px}.mini-dot{background:var(--gold);width:5px;height:5px}.decision-panel{border:1px solid var(--line);border-radius:12px;padding:23px 22px;min-width:0}.model-header{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:22px}.model-header .eyebrow{font-size:9px;letter-spacing:.13em;margin-bottom:4px}h3{font-size:20px;letter-spacing:-.025em;font-weight:620}.model-chip{border:1px solid var(--line);color:var(--muted);font-size:8px;letter-spacing:.06em;border-radius:4px;padding:4px 6px;white-space:nowrap}.metrics{display:grid;grid-template-columns:1fr 1fr;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);gap:18px}.metrics>div+div{border-left:1px solid var(--line);padding-left:18px}.metric-value{font-size:28px;line-height:1.3;font-weight:500;letter-spacing:-.04em;color:var(--gold);display:block;font-variant-numeric:tabular-nums;white-space:nowrap}.metric-value small{font-size:11px;font-weight:400;color:var(--muted);letter-spacing:0;margin-left:5px}.metric-label{font-size:10px;color:var(--muted);display:block;margin-top:5px}.metric-note{font-size:9px;color:#89929c;margin:8px 0 23px}.decision-heading,.stats-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}h4{font-size:11px;font-weight:650}.decision-heading>span,.stats-heading>span{font-size:10px;color:var(--muted);font-variant-numeric:tabular-nums}.chosen-action{background:var(--light);border:1px solid #edf0f3;border-radius:6px;padding:10px 12px;font-size:12px;font-weight:600;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere}.decision-description{font-size:11px;line-height:1.6;color:var(--muted);margin:8px 0 12px;max-height:72px;overflow:auto}.options{max-height:190px;overflow-y:auto;scrollbar-width:thin;margin:0 0 23px}.option-row{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center;min-height:26px;font-size:10px;padding:4px 5px;margin-top:4px;border-radius:4px;isolation:isolate;overflow:hidden}.option-row::before{content:"";position:absolute;inset:0 auto 0 0;width:var(--probability);background:#f0f3f6;z-index:-1}.option-row.chosen::before{background:var(--gold-soft)}.option-row.chosen{color:var(--gold);font-weight:600}.option-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.option-value{font-variant-numeric:tabular-nums}.stats-heading{border-top:1px solid var(--line);padding-top:18px}.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px 18px;margin:16px 0 0}.stat{min-width:0}.stat dt{font-size:9px;letter-spacing:.02em;color:var(--muted);margin-bottom:3px}.stat dd{font-size:13px;margin:0;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.bottom-note{display:flex;justify-content:space-between;gap:30px;margin:14px 0 32px;color:var(--muted);font-size:10px}.bottom-note a{white-space:nowrap}footer{padding:22px 0 30px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted)}footer>a{color:var(--gold)}dialog{max-width:min(1120px,calc(100vw - 40px));width:100%;border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:0 20px 90px #24344730}dialog::backdrop{background:#19273570;backdrop-filter:blur(4px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;gap:18px}.dialog-head h2{font-size:17px}.dialog-head .icon-button{font-size:24px}dialog video{width:100%;display:block;border-radius:6px;background:#fff}dialog>p{font-size:10px;color:var(--muted);margin-top:12px}
@media(min-width:1500px){.arena-grid{grid-template-columns:minmax(0,1fr) 385px}.decision-panel{padding:25px}.canvas-wrap{min-height:490px}}
@media(max-width:1050px){.topbar,main,footer{width:calc(100% - 40px)}.arena-grid{grid-template-columns:minmax(0,1fr) 320px;gap:14px}.decision-panel{padding:20px 17px}.metric-value{font-size:25px}.game-tab{padding:15px 14px;gap:10px}.game-tab small{font-size:10px}.game-caption .live-source{display:none}.intro{align-items:flex-start}.connection{margin-top:6px}.options{max-height:150px}}
@media(max-width:800px){.arena-grid{grid-template-columns:1fr}.decision-panel{display:grid;grid-template-columns:1fr 1fr;gap:0 28px}.model-header,.metrics,.metric-note{grid-column:1}.model-header{grid-row:1}.metrics{grid-row:2}.metric-note{grid-row:3}.decision-heading{grid-column:2;grid-row:1;align-self:start;margin-top:4px}.chosen-action{grid-column:2;grid-row:2;align-self:start}.decision-description{grid-column:2;grid-row:3;margin:6px 0}.options{grid-column:2;grid-row:4/7;max-height:150px}.stats-heading{grid-column:1;grid-row:4;margin-top:6px;padding-top:14px}.stats{grid-column:1;grid-row:5/7;margin-top:3px}.intro{padding-top:29px}.connection{font-size:0;gap:0;border:0}.connection .dot{width:8px;height:8px}.game-tab>svg{width:26px;height:26px}.game-tab small{display:none}.game-tab strong{font-size:13px}.game-tabs{gap:8px}.canvas-wrap{min-height:0}.game-caption{padding:12px 15px}.game-stage canvas{max-height:610px;object-fit:contain}.bottom-note{margin-bottom:26px}.bottom-note a{display:none}}
@media(max-width:500px){.topbar,main,footer{width:calc(100% - 28px)}.topbar{height:70px}.brand span{font-size:24px}.brand img{width:35px;height:35px}nav{font-size:11px}nav a:not(:last-child){display:none}h1{font-size:29px}.lede{font-size:12px;line-height:1.7;max-width:310px}.game-tabs{gap:6px;margin-bottom:20px}.game-tab{padding:13px 8px;justify-content:center;gap:8px;flex-wrap:wrap}.game-tab>svg{width:25px;height:25px}.game-tab strong{font-size:11px}.tab-status{position:absolute;right:7px;top:7px;width:4px;height:4px}.arena-toolbar{flex-wrap:wrap;gap:12px}.game-heading{width:100%;justify-content:space-between}h2{font-size:17px}.controls{width:100%}.controls label{flex:1}.controls input{width:100%;min-width:0}.button.start{min-width:126px}.controls .icon-button{flex:none}.decision-panel{display:block;padding:20px}.model-header{margin-bottom:18px}.metric-note{margin-bottom:20px}.stats-heading{margin-top:18px}.stats{margin-top:14px;grid-template-columns:repeat(3,1fr);gap:15px}.options{max-height:180px;margin-bottom:10px}.game-caption{font-size:10px}.stage-top{padding:12px 14px}footer{font-size:9px}footer>span{text-align:right;max-width:175px}.bottom-note{font-size:9px;line-height:1.7}.intro{padding-bottom:24px}.canvas-wrap canvas{aspect-ratio:600/650}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.spinner{animation:none}}
.subdecisions:empty{display:none}.subdecisions{margin:-10px 0 18px;grid-column:2;grid-row:7}.subdecision{display:grid;grid-template-columns:62px minmax(0,1fr) auto;gap:8px;font-size:10px;margin-top:8px;align-items:center}.subdecision-name{text-transform:capitalize;color:var(--muted)}.subdecision-choice{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.subdecision-time{font-variant-numeric:tabular-nums;color:var(--gold)}