:root{font:15px/1.65 "Microsoft YaHei",system-ui,sans-serif;color:#203b46;background:#edf2f1}*{box-sizing:border-box}body{margin:0}header{height:58px;display:flex;align-items:center;gap:20px;padding:0 24px;border-bottom:1px solid #cbd8d8;background:white}header strong{flex:1}a{color:#28677c}h1{font-size:23px;margin:0 0 10px}h2{font-size:18px;margin:15px 0 10px}p{margin:10px 0}.workbench{display:grid;grid-template-columns:245px minmax(0,1fr) 245px;gap:14px;padding:14px;height:calc(100dvh - 58px);min-height:680px;max-height:1100px}.tasks,.parameters{padding:18px;background:white;border:1px solid #cbd8d8;border-radius:9px;overflow:auto}.tasks label,.parameters label{display:grid;gap:4px;margin:10px 0}.visual{min-width:0;display:flex;flex-direction:column;border:1px solid #cbd8d8;border-radius:9px;overflow:hidden;background:white}.toolbar{display:flex;gap:6px;flex-wrap:wrap;padding:10px;align-items:center}.toolbar label{display:flex;align-items:center;gap:5px;font-size:13px}.toolbar input{width:95px}button,input,select,textarea{font:inherit;border:1px solid #adc1c7;border-radius:5px;padding:6px 8px;max-width:100%;min-width:0}button{cursor:pointer;background:#245969;color:white}button.secondary,.toolbar button{background:#eef4f3;color:#234955}button:disabled{opacity:.6}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,#scene:focus-visible{outline:3px solid #e0a652;outline-offset:2px}.tasks>button{margin:4px 3px 4px 0}.muted{font-size:12px;color:#687b83}#scene{position:relative;min-height:300px;flex:1;background:#e8eeef;touch-action:none}#scene canvas{width:100%;height:100%;display:block}.legend{position:absolute;top:10px;left:12px;right:12px;display:flex;gap:8px;align-items:center;font-size:12px;pointer-events:none}.legend i{height:10px;flex:1;background:linear-gradient(to right,#2266ae,#f5f5f5,#b45524)}#sceneNote{position:absolute;left:10px;right:10px;bottom:10px;font-size:12px;background:#ffffffdd;border-radius:4px;padding:6px;pointer-events:none}.readouts{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:12px;border-top:1px solid #d4e0e1}.readouts div{padding:6px;background:#f1f6f5;border-radius:5px}.readouts small{display:block;color:#607783;font-size:11px}.readouts strong{display:block;font-size:16px;font-variant-numeric:tabular-nums}#status{padding:5px 12px;font-size:12px;background:#edf3f0;min-height:32px}#feedback{padding:10px;background:#eff5f4;border-left:3px solid #447685;font-size:13px}textarea{resize:vertical;width:100%}pre{font:12px/1.7 Consolas,monospace;white-space:pre-wrap}summary{cursor:pointer}.sources{padding:20px;max-width:1180px;margin:auto}#scene:fullscreen{width:100vw;height:100vh}button:hover{filter:brightness(.93)}@media(max-width:1050px){.workbench{grid-template-columns:200px minmax(0,1fr) 205px;gap:8px;padding:8px}.tasks,.parameters{padding:12px}}@media(max-width:760px){header{height:auto;min-height:60px;padding:10px;flex-wrap:wrap;font-size:12px;gap:8px}.workbench{height:auto;max-height:none;grid-template-columns:1fr}.visual{grid-row:1;min-height:590px}.tasks,.parameters{max-height:none}.parameters{display:grid;grid-template-columns:1fr 1fr;gap:8px}.parameters h2,.parameters p,.parameters button{grid-column:1/-1}.readouts strong{font-size:14px}#scene{height:370px;flex:auto}.toolbar{padding:8px}.sources{padding:12px}}

#storyIntro,#storyControls{display:none}.story-mode #storyIntro,.story-mode #storyControls{display:block}.story-mode .tasks>:not(#storyIntro),.story-mode .parameters>:not(#storyControls){display:none}.story-mode .legend{display:none}.story-mode .tasks{background:#fbf8f0}.story-mode .visual{background:#fcfcf8}.story-mode .workbench{grid-template-columns:280px minmax(0,1fr) 240px}.story-kicker{color:#9d6030;font-size:12px;letter-spacing:.1em}.story-mode h1{font-size:30px;line-height:1.4;color:#243b46}.story-lead{font-size:16px}.guess{display:flex;gap:5px;flex-wrap:wrap;margin:15px 0}.guess button{background:#f6eddb;color:#614931;font-size:13px}.guess .chosen{background:#805931;color:white}.story-primary{background:#a0582d;width:100%;padding:12px;font-weight:bold}.story-steps{display:grid;gap:7px;margin:24px 0}.story-steps button{text-align:left;background:#e8efeb;color:#254e51;padding:10px}.story-nudge{display:flex;gap:7px}.story-check{display:flex!important;align-items:center;font-size:13px}.scene-label{position:absolute;transform:translate(-50%,-100%);background:#fffdf3ed;padding:3px 7px;border-radius:4px;font-size:12px;white-space:nowrap;pointer-events:none;box-shadow:0 1px 5px #102c3320}.scene-label.load{color:#963918;font-weight:bold}.scene-label.support{color:#315e75}.scene-label.cut{background:#f8e2b9}.story-mode #backStory{display:none}#storyHint{font-size:14px;padding:10px;border-left:3px solid #b4783c;background:#f4ead6}#supportNote{font-size:13px;line-height:1.8;color:#506872}.story-mode .readouts strong{font-size:15px}.story-mode #scene{overflow:hidden}@media(max-width:1100px){.story-mode .workbench{grid-template-columns:225px minmax(0,1fr) 210px}.story-mode h1{font-size:25px}}@media(max-width:760px){.story-mode .workbench{grid-template-columns:1fr}.story-mode .visual{grid-row:2}.story-mode .tasks{grid-row:1}.story-mode .parameters{display:block}.story-mode #storyIntro h1 br{display:none}.story-mode .story-steps{display:flex;flex-wrap:wrap;margin:12px 0}.scene-label{font-size:10px;white-space:normal;max-width:130px}.story-mode .visual{min-height:620px}.story-mode .tasks details{display:none}}

.plate-introduction .story-steps,.plate-introduction #expert,.plate-introduction #storyIntro>details{display:none}
.story-mode .guess[hidden]{display:none}.plate-introduction .story-steps{display:grid}.mission-picker{font-size:13px;font-weight:600}.mission-picker select{width:100%;background:white;color:#234955;padding:10px 7px;margin:7px 0}.story-mode h1{font-size:26px}.story-mode .story-lead{font-size:14px}.story-mode #missionCard{border-top:1px solid #dacfb9;padding-top:6px;margin-top:14px;font-size:14px}.story-mode #missionCheck{width:100%}#missionCheck[hidden]{display:none}#missionFeedback:empty{display:none}#missionFeedback{background:#e9f2ed;padding:10px;line-height:1.8}#missionHints{font-size:13px}#missionHints button{font-size:12px;background:transparent;color:#395e67}.case-label{font-size:13px;margin-top:22px}.story-mode .story-steps{margin:6px 0 14px;gap:5px}.story-steps button[aria-pressed=true]{background:#245969;color:white}#trialTray{padding:12px;border-top:1px solid #cbd8d8;background:#fbfcf9;font-size:13px}body:not(.story-mode) #trialTray{display:none}.trial-actions{display:flex;gap:8px;flex-wrap:wrap}.trial-actions button{font-size:13px}#trialStatus{margin:6px 0;color:#506872}.trial-scroll{overflow:auto;max-height:210px}#trialTray table{width:100%;font-size:12px;border-collapse:collapse}#trialTray th,#trialTray td{padding:5px;border-bottom:1px solid #d7e0df;white-space:nowrap;text-align:left}#trialTray td button{font-size:11px;padding:3px 6px}.asset-credit{font-size:12px;color:#607782}.story-mode .workbench{min-height:850px}.story-mode .toolbar label{font-size:11px}.story-mode #scene{min-height:330px}.story-mode #storyControls details{font-size:12px}@media(max-width:760px){.story-mode .tasks{max-height:none}.story-mode #missionHints{display:block}.story-mode .workbench{min-height:0}.story-mode .visual{min-height:680px}.story-mode .story-steps{display:flex}.story-mode .readouts{padding:8px}}
#sceneViews{display:flex;gap:6px;flex-wrap:wrap;width:100%}#sceneViews button{padding:8px 12px}#sceneViews[data-view=whole] #wholeBridge,#sceneViews[data-view=local] #localPlate{background:#245969;color:white}.scene-label.dimension{color:#73471e;background:#fff7e5;font-size:11px}.scene-label.reaction{background:#e5f1ff;color:#174d79}#plateProfile{background:#fff;padding:4px 14px;border-top:1px solid #d1dedf}#plateProfile p{font-size:12px;margin:2px 0}#plateProfile svg{width:100%;height:100px}#plateProfile[hidden],body:not(.story-mode) #plateProfile{display:none}.story-mode .workbench{min-height:1000px;max-height:1300px}.story-mode #scene{min-height:360px}#sceneNote{font-size:11px}.story-mode .story-steps button{font-size:12px;padding:7px}.story-mode #supportNote{font-size:12px}@media(max-width:760px){.story-mode .workbench{min-height:0;max-height:none}#sceneViews button{font-size:12px}.scene-label.dimension{font-size:9px}}
#labelLeaders{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1}.scene-label{z-index:2}.story-mode .parameters{padding:14px}.story-mode .scene-label{font-size:10px}
/* Scene-first interface: one goal and an optional tool drawer. */
.play-view.story-mode{background:#e4eeeb}.play-view.story-mode>header{height:52px;background:#f7faf8;border:0}.play-view.story-mode .workbench{display:block;padding:0;height:calc(100dvh - 52px);min-height:640px;max-height:none}.play-view.story-mode .tasks,.play-view.story-mode .parameters{display:none}.play-view.story-mode .visual{height:100%;border:0;border-radius:0;display:block;position:relative;background:#e4eeeb;overflow:hidden}.play-view.story-mode #scene{height:100%;min-height:0;width:100%}.play-view.story-mode .visual>#status{position:absolute;bottom:4px;left:20px;max-width:90%;min-height:0;padding:0;background:none;color:#4f6871;font-size:11px}.play-view.story-mode #sceneNote{left:auto;right:24px;bottom:92px;width:320px;padding:8px 12px;background:#fbfdfbdd;border:0;font-size:12px;line-height:1.5}.play-view.story-mode .bridge-source-viewer{display:none}#playHud{position:absolute;left:36px;top:30px;width:410px;z-index:3;pointer-events:none}#playHud h1{font-size:32px;line-height:1.35;max-width:400px;margin:6px 0 16px;letter-spacing:.01em;color:#203f46}#playHud p{font-size:15px;line-height:1.7;margin:8px 0;color:#44666e}#playHud .play-kicker{font-size:12px;letter-spacing:.12em;color:#657e7d}#playHud button{pointer-events:auto;background:#245f67;border:0;border-radius:8px;padding:13px 20px;min-height:48px;font-weight:600;box-shadow:0 4px 12px #294a4220}#playHud #playMetric{font-size:15px;display:table;padding:6px 10px;background:#f9fcf9de;border-radius:4px}#playHud #playMetric:empty{display:none}#playDock{position:absolute;left:50%;transform:translateX(-50%);bottom:28px;display:flex;gap:5px;white-space:nowrap;background:#fafcf9ec;border:1px solid #c7d8d2;border-radius:12px;padding:6px;z-index:4;box-shadow:0 5px 24px #25443b18}#playDock button{background:transparent;color:#2d535b;border:0;border-radius:7px;padding:11px 15px;min-height:44px;font-size:14px}#playDock button[aria-expanded=true]{background:#245f67;color:white}.play-view[data-scene-stage=whole] #playDock>:not([data-drawer=notes]){display:none}#playDrawer{position:absolute;right:24px;top:24px;bottom:95px;width:360px;max-width:calc(100% - 48px);overflow:auto;z-index:5;background:#fbfdfbef;border:1px solid #cad8d1;border-radius:12px;box-shadow:0 10px 38px #204b4128;backdrop-filter:blur(12px);padding:18px}#playDrawer[hidden],#playDrawer [data-panel][hidden]{display:none}#playDrawer>header{position:sticky;top:-18px;padding:9px 0 15px;height:auto;background:#fbfdfb;display:flex;justify-content:space-between;gap:6px;border-bottom:1px solid #d7e0db;margin-bottom:15px;font-size:16px}#playDrawer #closeDrawer{background:transparent;border:0;color:#43636a;font-size:14px;min-height:44px}#playDrawer label{display:grid;gap:10px;margin:18px 0;font-size:15px}#playDrawer input[type=range]{width:100%;accent-color:#2b7780;min-height:32px}#playDrawer input[type=checkbox]{width:18px;height:18px;accent-color:#2b7780}#playDrawer .story-check{font-size:15px;gap:10px;line-height:1.5}#playDrawer select{background:white;width:100%;min-height:44px}#playDrawer p{font-size:14px;line-height:1.8}#playDrawer .story-steps button{min-height:48px;font-size:15px}#playDrawer details{padding:12px 0;border-top:1px solid #e0e7e3}#playDrawer summary{font-size:14px}#playDrawer .toolbar{padding:10px 0}#playDrawer #sceneViews{display:none}#playDrawer #trialTray{padding:0;border:0}#playDrawer .sources{padding:0}#playDrawer .readouts{grid-template-columns:1fr}#playDrawer #missionCard{margin:0;padding:0;border:0}#playDrawer #plateProfile{padding:0}#playDrawer .story-nudge button{flex:1;min-height:44px}.play-view.story-mode .scene-label{font-size:12px}.play-view:not(.story-mode) #playHud,.play-view:not(.story-mode) #playDock,.play-view:not(.story-mode) #playDrawer{display:none}@media(max-width:760px){.play-view.story-mode .workbench{min-height:660px}#playHud{left:20px;top:20px;width:calc(100% - 40px)}#playHud h1{font-size:25px;max-width:340px;margin-bottom:8px}#playHud p{font-size:14px;max-width:330px}#playDock{width:calc(100% - 24px);white-space:normal;flex-wrap:wrap;justify-content:center;bottom:26px}#playDock button{font-size:13px;padding:8px 9px;min-height:40px}#playDrawer{left:12px;right:12px;top:16px;bottom:125px;width:auto;max-width:none} .play-view.story-mode #sceneNote{display:none}.play-view.story-mode .scene-label{font-size:10px}.play-view.story-mode .visual>#status{font-size:10px;left:12px}}
@media(prefers-reduced-motion:reduce){#playDrawer,#playHud,#playDock{transition:none}}
.play-view.story-mode:not(.solve-error) .visual>#status{display:none}
.play-view.story-mode .scene-label{font-size:14px}@media(max-width:760px){.play-view.story-mode .scene-label{font-size:14px;max-width:145px}}