:root{color-scheme:light;--paper:#f3f1ed;--panel:#fcfbf8;--ink:#303b55;--muted:#5e687d;--line:#c9cbd3;--gold:#a56e2d;--blue:#516780}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 system-ui,"Microsoft YaHei",sans-serif}button,select,input{font:inherit}button,select{min-height:44px;border:1px solid var(--line);border-radius:8px;padding:8px 14px;background:var(--panel);color:var(--ink)}button{cursor:pointer}button:hover:not(:disabled){border-color:var(--gold);background:#f0eadc}button:disabled{opacity:.45;cursor:default}button:focus-visible,select:focus-visible,summary:focus-visible,a:focus-visible{outline:3px solid var(--gold);outline-offset:3px}header,main{max-width:1280px;margin:auto;padding:0 32px}header{height:80px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}header a{font-size:11px;letter-spacing:2px;text-decoration:none;color:var(--muted)}.intro{display:flex;justify-content:space-between;align-items:center;padding:36px 0 30px}.eyebrow{font-size:10px;letter-spacing:2px;color:var(--gold);margin:0 0 8px}h1{font-size:40px;font-weight:500;line-height:1.2;letter-spacing:4px;margin:0 0 15px}h1 span{display:block;font-size:17px;letter-spacing:1px;color:var(--muted);margin-top:10px}.intro p:last-child{color:var(--muted);font-size:14px}.badge{font-size:12px;text-align:right;color:var(--muted);border-right:2px solid var(--gold);padding-right:18px}h2{font-size:20px;font-weight:550;margin:0 0 12px}h3{font-size:16px;margin:20px 0 10px;font-weight:550}p{margin:0 0 14px}.order-bar{display:flex;gap:12px;align-items:center;margin-bottom:18px}.order-bar label,.order-bar span{font-size:12px;color:var(--muted)}.order-bar span{margin-left:auto}.order-bar select{min-width:190px}.layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(320px,1fr);gap:24px;align-items:start}.factory-panel{border:1px solid var(--line);background:var(--panel);border-radius:14px;padding:22px}.factory-title{display:flex;align-items:center;justify-content:space-between;gap:14px}.factory-title strong{white-space:nowrap;font-weight:500;font-size:12px;color:var(--muted)}.stats{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 18px}.stats span{padding:6px 12px;border:1px solid var(--line);border-radius:20px;font-size:12px}#scene svg{width:100%;height:auto;display:block}#scene{margin-bottom:14px}.hint{font-size:11px!important;color:var(--muted)}.feedback{padding:14px;border-left:3px solid var(--gold);background:#f1eadb;font-size:13px;min-height:52px}.issues{color:#924c36;font-size:12px;margin-top:12px}.issues:empty{display:none}.sources{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px}.source,.machine-state{padding:11px;border:1px solid var(--line);border-radius:8px;font-size:12px}.source p,.machine-state p{font-size:11px;color:var(--muted);margin:5px 0 0}.machine-status{display:grid;grid-template-columns:1fr 1fr;gap:8px}.machine-state strong{font-size:13px}.machine-state.error{border-color:#b87b5a;background:#f5e8dc}.controls{display:grid;gap:16px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px}.panel p{font-size:13px;color:var(--muted)}.panel label{display:block;font-size:12px;margin:12px 0 6px}.panel select{width:100%}.machine-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin:16px 0}.machine-tabs button{padding:8px;font-size:12px}.machine-tabs button.active{background:var(--blue);color:white;border-color:var(--blue)}#machine-description{margin-top:9px}.inputs{display:grid;grid-template-columns:1fr 1fr;gap:8px}.inputs select{font-size:12px;padding:8px}.inputs>div:only-child{grid-column:1/-1}#budget{margin-top:14px}.operation{border-color:#8b9bb0}.target{display:flex;align-items:center;gap:12px;font-size:13px;margin:12px 0}.target svg{width:45px;height:45px}.actions{display:flex;gap:8px}.actions button{flex:1}.operation .actions button{background:var(--blue);color:white;border-color:var(--blue)}.wide{width:100%;margin-top:9px}.operation .hint{margin-top:12px}.record{padding:10px 0;border-bottom:1px solid var(--line);font-size:12px}.record:last-child{border:0}.record button{font-size:11px;min-height:34px;padding:4px 9px;margin-top:7px}.rules{padding:20px 0;margin:28px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}.rules summary{cursor:pointer;color:var(--ink)}.rules p{margin-top:14px}footer{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:11px;color:var(--muted);margin:20px 0 30px}.warning{padding:20px;margin-bottom:20px;background:#f2e5ce;border:1px solid #b6864d;border-radius:10px}.warning button{margin:5px 3px 0 0}dialog{max-width:490px;width:calc(100% - 32px);max-height:90vh;overflow:auto;border:1px solid #9ca8bb;border-radius:14px;background:var(--panel);color:var(--ink);padding:26px}dialog::backdrop{background:#29354bbd}.stack{display:grid;gap:9px}.check{display:flex;align-items:center;gap:10px;margin:20px 0}.check input{width:18px;height:18px}#import-status{color:#924c36;margin:14px 0}#toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);max-width:90vw;border-radius:7px;background:#303b55;color:white;font-size:13px}#toast:not(:empty){padding:10px 18px}[hidden]{display:none!important}body.contrast{--line:#7a8496;--muted:#3b4861;--ink:#1b2843}.contrast #scene{outline:2px solid #516780}@media(max-width:820px){header,main{padding-left:18px;padding-right:18px}header{height:72px}.intro{padding:28px 0 22px}.badge{display:none}h1{font-size:32px}.layout{grid-template-columns:1fr;gap:16px}.factory-panel,.panel{padding:16px}.order-bar{gap:8px;flex-wrap:wrap}.order-bar select{min-width:155px;font-size:13px}.order-bar span{font-size:10px}.stats{gap:6px}.stats span{font-size:11px;padding:5px 9px}.source,.machine-state{padding:9px}.intro p:last-child{font-size:12px}header a{font-size:10px;letter-spacing:1px}header button{font-size:12px}}

/* Route editing surfaces */
.level-bar{display:flex;align-items:center;gap:14px;margin:0 0 24px}.level-bar label{font-size:13px}.level-bar #progress{margin-left:auto;font-size:12px}.sidebar{display:grid;gap:18px}.map-panel{background:#fffdf9;border:1px solid #d6d7d0;border-radius:17px;padding:24px}.map-head{display:flex;align-items:center;justify-content:space-between}.map-head .eyebrow{margin-top:0}.map-head h2{margin:10px 0 22px}.board{position:relative;max-width:680px;margin:20px auto;background:#e4e6de;border-radius:12px;padding:5px}.board svg{display:block;width:100%;height:auto}.cells{position:absolute;inset:5px;display:grid;gap:0}.cell{border:1px solid transparent;border-radius:9px;background:transparent!important;min-width:0;min-height:0;padding:0;box-shadow:none;opacity:1!important}.cell:hover:not(:disabled){border:3px solid #a57540;background:#d4bd7a30!important}.cell:focus-visible{outline:3px solid #a57540;outline-offset:-4px}.cell.selected-end{border:2px dashed #a57540}.train-status{display:grid;gap:8px}.train-row{border:1px solid #deded3;border-left:4px solid var(--train);padding:12px;border-radius:8px;font-size:12px;line-height:1.7}.train-row strong{display:block}.panel label:not(.check){display:block;font-size:12px;margin:15px 0 8px}.panel select{display:block;width:100%}.direction-pad{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:16px 0}.direction-pad button{font-size:24px;padding:9px}.actions{display:flex;gap:9px;flex-wrap:wrap}.actions button{flex:1;min-width:110px;font-size:12px}.primary{background:#435f76;color:white;border-color:#435f76}.ticket{border:1px dashed #aaa990;border-radius:9px;padding:21px 27px;text-align:center;color:#667482;font-size:12px;letter-spacing:1px}.ticket strong{display:block;color:#435f76;font-size:27px;letter-spacing:4px;margin:10px 0}.ticket span{font-size:11px}.record{padding:12px 0;border-bottom:1px solid #e0e1d9;font-size:12px;line-height:1.8}.record button{font-size:11px;padding:7px 10px;margin-top:6px}.stack{display:grid;gap:10px}.contrast .map-panel,.contrast .panel{border-color:#65707b}.contrast .cell:focus-visible{outline-color:#111}.contrast .hint{color:#364657}
@media(max-width:760px){.map-panel{padding:16px}.ticket{display:none}.level-bar{gap:8px;flex-wrap:wrap}.level-bar select{max-width:65%;font-size:13px}.level-bar #progress{font-size:11px}.map-head h2{font-size:22px}.board{margin:15px 0}.cell{border-radius:5px}.direction-pad button{min-width:0}.actions button{min-width:110px}.train-row{font-size:12px}}

/* Finite tile scoring surfaces */
:root{background:#f0efe4;color:#3a5040}.terrain-key{display:grid;grid-template-columns:repeat(2,42px);gap:6px}.terrain-key span{display:grid;place-content:center;height:42px;border-radius:7px;background:#c7d19b}.terrain-key span:nth-child(2){background:#67866a;color:#fff}.terrain-key span:nth-child(3){background:#80b5c1}.terrain-key span:nth-child(4){background:#cb9a7a}.score-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:5px 0 20px}.score-strip div{background:#edf0e4;border-radius:10px;padding:12px}.score-strip span{display:block;font-size:11px;color:#6b765e}.score-strip strong{display:block;font-size:24px;color:#3d5b3e;margin-top:6px}.current{display:flex;gap:18px;align-items:center;margin:14px 0}#current-art{width:90px;flex:none}#current-art svg{width:100%;display:block}.current strong{font-size:20px}.coordinates{display:grid;grid-template-columns:1fr 1fr;gap:12px}.coordinates label{margin-top:15px!important}.coordinates select{margin-top:7px}.preview{background:#edf0e4;border-radius:10px;padding:12px;font-size:13px;line-height:1.8}.upcoming{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.next-tile{font-size:11px;text-align:center;color:#62705d}.next-tile svg{width:100%;max-width:85px;display:block;margin:0 auto 5px}.goal-row{display:flex;justify-content:space-between;gap:10px;padding:11px 0;border-bottom:1px solid #deded2;font-size:13px}.goal-row.done{color:#416a3f;font-weight:600}.primary{background:#4f714f;border-color:#4f714f}.cell.frontier{border:1px dotted #9ca68b}.cell.previewed{border:3px solid #987444}.contrast .score-strip div,.contrast .preview{background:#dbe8d5}.contrast .score-strip span{color:#384d35}
@media(max-width:760px){.terrain-key{display:none}.score-strip{gap:7px}.score-strip div{padding:10px}.score-strip strong{font-size:23px}.score-strip span{font-size:10px}.current{gap:14px}.cell.frontier{border-width:1px}.cell.previewed{border-width:2px}}