:root{color-scheme:dark;--bg:#0c1d24;--panel:#132b32;--ink:#eae8dc;--muted:#a2b5b4;--gold:#e9bd78;--line:#365057;--teal:#87c3bd;--paper:#f0e8d7;--paper-ink:#26393b;font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 35% 0,#21404a 0,var(--bg) 65%);color:var(--ink);min-height:100vh}button{font:inherit;color:inherit;cursor:pointer}button:disabled{cursor:default;opacity:.5}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--gold);outline-offset:4px}button{transition:background .16s,transform .16s,border-color .16s}button:hover:not(:disabled){filter:brightness(1.08)}[hidden]{display:none!important}.app{max-width:1720px;margin:auto;padding:26px 34px 16px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:0 0 24px;gap:20px}.brand{display:flex;align-items:center;gap:15px}.case-seal{width:48px;height:54px;border:1px solid #b99b67;display:grid;place-items:center;color:var(--gold);font-size:24px;font-family:serif;position:relative}.case-seal:after{content:"";position:absolute;inset:4px;border:1px solid #715e44}.eyebrow{display:block;font-size:12px;letter-spacing:2.3px;color:var(--gold);line-height:1.5}.brand h1{font-family:"Songti SC",SimSun,serif;font-size:28px;letter-spacing:5px;font-weight:600;margin:2px 0 0}.top-actions{display:flex;align-items:center;gap:18px}.chapter-tag{font-size:14px;color:#b3c5c4;letter-spacing:1px}.quiet-button{background:transparent;border:1px solid var(--line);padding:9px 14px;border-radius:4px;font-size:14px}.icon-button{background:transparent;border:1px solid var(--line);border-radius:50%;width:31px;height:31px;font-family:serif;font-size:18px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 318px;gap:22px;align-items:stretch}.play-column{min-width:0}.scene-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 0 14px}.tiny-label{color:var(--muted);font-size:12px;letter-spacing:1.5px}.scene-bar h2{font-size:18px;font-weight:500;margin:4px 0 0}.scene-switch{display:flex;gap:3px;background:#0a1e25;padding:4px;border:1px solid #2c444c;border-radius:5px}.scene-switch button{font-size:14px;border:0;background:transparent;padding:8px 12px;border-radius:3px;color:#a5bcbd}.scene-switch button.active{background:#344b50;color:#f0d8ad}.board{position:relative;aspect-ratio:3/2;width:100%;overflow:hidden;border:1px solid #4b5c59;background:#1f4045;border-radius:4px;isolation:isolate;touch-action:none;box-shadow:0 20px 60px #0004}.scene-art{position:absolute;inset:0;width:100%;height:100%;object-fit:fill;pointer-events:none;user-select:none}.scene-shade{position:absolute;inset:0;box-shadow:inset 0 0 70px #07121966;pointer-events:none;z-index:2}#world{position:absolute;inset:0;pointer-events:none}.actor{position:absolute;transform:translate(-50%,-92%);width:8.8%;aspect-ratio:3/2;z-index:5;pointer-events:none}.character{height:100%;width:100%;background-image:url('assets/characters.png');background-size:400% 200%;background-repeat:no-repeat;transform-origin:50% 88%;filter:drop-shadow(0 3px 2px #0004)}.sprite-0{background-position:0 0}.sprite-1{background-position:33.333% 0}.sprite-2{background-position:66.666% 0}.sprite-3{background-position:100% 0}.sprite-4{background-position:0 100%}.sprite-5{background-position:33.333% 100%}.sprite-6{background-position:66.666% 100%}.sprite-7{background-position:100% 100%}.actor-shadow{position:absolute;left:27%;bottom:6%;width:45%;height:13%;background:#00181a55;border-radius:50%;filter:blur(2px)}.player{width:11%;z-index:9}.player-name{position:absolute;left:50%;bottom:-17px;transform:translateX(-50%);color:#f9e3b9;text-shadow:0 1px 4px #000,0 1px 4px #000;font-size:12px;white-space:nowrap}.player.walking .character{animation:walk .3s ease-in-out infinite}.player.facing-left .character{scale:-1 1}@keyframes walk{0%,100%{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-4px) rotate(2deg)}}.hotspot{position:absolute;transform:translate(-50%,-50%);border:1px solid #b8bc9a70;background:#18383de8;border-radius:30px;color:#f5ebd9;font-size:13px;line-height:1.25;padding:7px 10px;display:flex;align-items:center;gap:6px;white-space:nowrap;box-shadow:0 3px 15px #0004;pointer-events:auto;z-index:11}.hotspot svg{height:14px;width:14px;flex:none;color:var(--gold)}.hotspot.near{border-color:var(--gold);background:#28464b;box-shadow:0 0 0 3px #f0c18025}.hotspot.done:before{content:"✓";color:#aad5be;font-size:12px}.hotspot.done svg{display:none}.hotspot.far{opacity:.88}.scene-caption{position:absolute;top:16px;left:18px;right:18px;display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:1px;text-shadow:0 2px 5px #000;pointer-events:none;color:#ffe8bd;z-index:3}.caption-line{width:23px;height:1px;background:#e8be79}.interact-prompt{position:absolute;bottom:25px;left:50%;transform:translateX(-50%);background:#0c252eef;border:1px solid #9f9675;padding:11px 20px;border-radius:5px;z-index:15;max-width:94%;white-space:nowrap;font-size:14px;box-shadow:0 6px 24px #0005}.interact-prompt kbd{margin-right:10px}.destination{position:absolute;width:18px;height:10px;transform:translate(-50%,-50%);border:2px solid #f2d099;border-radius:50%;z-index:4;pointer-events:none;animation:beacon .8s ease-in-out infinite}@keyframes beacon{50%{scale:1.15;opacity:.5}}.control-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;color:var(--muted);font-size:12px}.control-bar>div{display:flex;align-items:center;gap:8px;flex-wrap:wrap}kbd{font:11px system-ui;border:1px solid #68808066;border-bottom-width:2px;border-radius:3px;background:#17323a;padding:3px 6px;color:#d7e2dc;white-space:nowrap}.control-bar span{margin-right:6px}.click-hint{color:#86a3a6}.notebook{background:var(--paper);color:var(--paper-ink);border-radius:5px;box-shadow:0 12px 30px #0003;overflow:hidden;display:flex;flex-direction:column;min-height:550px;max-height:calc(100vw * .48 + 30px)}.notebook-heading{padding:23px 22px 16px;display:flex;justify-content:space-between;align-items:center}.notebook-heading .eyebrow{font-size:10px;letter-spacing:1.8px;color:#7e6650}.notebook h2{font-family:"Songti SC",SimSun,serif;font-size:24px;letter-spacing:2px;margin:5px 0 0}.notebook-mark{font-size:34px;color:#937244}.objective{margin:0 20px 16px;padding:13px 14px;background:#e3ddcc;border:1px solid #d6ceba;border-radius:3px}.objective .tiny-label{color:#736547;font-size:12px}.objective p{font-size:14px;line-height:1.65;margin:7px 0 12px}.progress-track{height:3px;background:#c9c5b7}.progress-track>div{height:100%;background:#46786e;width:0;transition:width .4s}#progressLabel{display:block;margin-top:6px;font-size:12px;color:#686f61}.notebook-tabs{display:flex;border-top:1px solid #cec9b8;border-bottom:1px solid #cec9b8;margin:0 20px}.notebook-tabs button{border:0;background:none;color:#79796c;padding:12px 10px;flex:1;font-size:14px;border-bottom:2px solid transparent;margin-bottom:-1px}.notebook-tabs button[aria-selected=true]{color:#1e534d;border-bottom-color:#2e6c61;font-weight:600}.notebook-tabs button span{font-size:11px;background:#d5d8c9;border-radius:3px;padding:1px 5px;margin-left:3px}.notebook-body{padding:16px 20px 20px;overflow:auto;flex:1;scrollbar-width:thin;scrollbar-color:#b5b6a4 transparent;min-height:250px}.notebook-empty{margin:36px 8px;text-align:center;color:#818477}.notebook-empty .empty-symbol{font-size:38px;display:block;color:#a6a18a;margin-bottom:14px}.notebook-empty p{font-size:14px;line-height:1.8}.clue-card{width:100%;text-align:left;border:1px solid #cbc8b8;padding:12px 12px;background:#f5efdf;border-radius:3px;margin-bottom:9px;position:relative}.clue-card .clue-type{display:block;font-size:11px;color:#88744e;letter-spacing:1px;margin-bottom:5px}.clue-card strong{display:block;font-size:15px;font-weight:600;line-height:1.5}.clue-card p{font-size:13px;line-height:1.6;color:#72776c;margin:6px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.clue-card .number{position:absolute;right:10px;top:10px;font-size:10px;color:#9b9b89}.clue-card.new{border-left:3px solid #9d7843}.notebook-footer{font-size:12px;display:flex;align-items:center;gap:8px;padding:12px 20px;border-top:1px solid #d2cbb8;color:#778070}.ink-dot{width:5px;height:5px;border-radius:50%;background:#50766c}.dialogue{position:absolute;bottom:14px;left:14px;right:14px;z-index:30;background:#10292ff7;border:1px solid #a6956f;border-radius:5px;box-shadow:0 12px 50px #0008;padding:20px 23px;max-height:75%;overflow:auto;scrollbar-width:thin}.dialogue-top{display:flex;align-items:center;justify-content:space-between;gap:15px;border-bottom:1px solid #526060;padding-bottom:10px;margin-bottom:10px}.dialogue-top h3{font-size:19px;color:var(--gold);margin:0;letter-spacing:1px}.dialogue-top .role{font-size:12px;color:#a4bcbc;margin-left:10px;font-weight:400;letter-spacing:0}.close-button{background:none;border:0;color:#b3c1bf;font-size:22px;padding:0 4px;line-height:1}.dialogue-text{font-size:16px;line-height:1.85;margin:0 0 14px;white-space:pre-line}.dialogue-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.dialogue-choices button{font-size:14px;background:#24434a;border:1px solid #47636a;border-radius:3px;padding:10px 12px;text-align:left;line-height:1.5}.dialogue-choices button.asked{color:#a2beb7}.dialogue-choices button.asked:after{content:"  ✓";color:#9bbfab}.dialogue-choices button:disabled{font-size:12px}.dialogue-note{font-size:12px;color:#a5b9b5;margin:10px 0 0}.toast{position:absolute;left:50%;top:52px;transform:translateX(-50%) translateY(-5px);opacity:0;pointer-events:none;max-width:92%;z-index:40;background:#102d32f0;border:1px solid #d5b77a;border-radius:4px;padding:12px 20px;color:#ffe6b7;font-size:14px;line-height:1.6;transition:opacity .25s,transform .25s;text-align:center}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}.start-screen{position:absolute;inset:0;z-index:45;background:linear-gradient(90deg,#0b2633ed,#0b253375);display:flex;align-items:center;padding:7%}.start-card{max-width:450px;position:relative}.start-card h2{font-family:"Songti SC",SimSun,serif;font-size:clamp(25px,3.2vw,48px);letter-spacing:6px;margin:18px 0 24px;line-height:1.4}.start-card p{line-height:2;font-size:16px;color:#d3ded8;max-width:390px}.start-card .start-aside{font-size:14px;color:#b6c8c4;margin-bottom:26px}.gold-button{background:var(--gold);color:#24373a;border:1px solid #f6d39b;padding:12px 28px;font-size:16px;border-radius:3px;font-weight:600}.start-hint{display:block;font-size:12px;color:#a4bfc0;margin-top:20px;line-height:1.8}.page-footer{display:flex;justify-content:space-between;gap:16px;padding-top:24px;color:#7a969a;font-size:12px;line-height:1.7}.person-card{display:flex;gap:10px;align-items:center;border-bottom:1px solid #d8d2c2;padding:9px 0 13px;margin-bottom:7px}.portrait{width:62px;height:55px;flex:none;position:relative}.portrait .character{width:82px;height:55px;position:absolute;left:-10px}.person-card h3{font-size:15px;margin:0 0 4px}.person-card p{font-size:12px;margin:0;color:#74796d;line-height:1.6}.evidence-count{font-size:12px;line-height:1.7;color:#777a6f;margin:0 0 12px}.reason-card{padding:13px 12px;border:1px solid #c7c3b3;border-radius:3px;margin-bottom:12px;background:#f7f0e0}.reason-card h3{font-size:15px;margin:0 0 9px;line-height:1.6}.reason-card p{font-size:13px;line-height:1.7;color:#6a726a;margin:0 0 12px}.reason-card button,.paper-button{font-size:14px;padding:9px 13px;border:1px solid #9eaa9c;border-radius:3px;background:#2a5b53;color:#f5f1df}.reason-card.solved{border-left:3px solid #458574}.reason-card.solved h3:before{content:"✓ ";color:#418477}.reason-status{font-size:11px;letter-spacing:1px;color:#927543;margin-bottom:6px;display:block}.modal{width:min(620px,calc(100% - 30px));max-height:85vh;padding:0;border:1px solid #a59573;border-radius:6px;color:#263f3e;background:var(--paper);box-shadow:0 25px 100px #0008}.modal::backdrop{background:#071c24b8;backdrop-filter:blur(5px)}#modalBody{padding:30px}.modal-top{display:flex;align-items:flex-start;justify-content:space-between;gap:15px;border-bottom:1px solid #c9c7b8;padding-bottom:16px;margin-bottom:18px}.modal-top h2{font-family:"Songti SC",SimSun,serif;font-size:25px;line-height:1.5;margin:4px 0 0}.modal .eyebrow{color:#8b6e43}.modal .close-button{color:#5a716d}.modal p{font-size:16px;line-height:1.9}.source{font-size:13px!important;color:#7b796b;border-top:1px solid #d7d0bd;padding-top:12px}.modal label.evidence-option{display:flex;align-items:center;gap:10px;border:1px solid #cbc6b4;padding:10px 12px;cursor:pointer;font-size:14px;background:#f7f1e3;border-radius:3px}.evidence-options{display:grid;grid-template-columns:1fr 1fr;gap:7px;max-height:225px;overflow:auto;margin:12px 0 18px}.evidence-options input{accent-color:#30695c;width:16px;height:16px;flex:none}.answer-options{display:flex;flex-direction:column;gap:7px}.answer-option{background:#e5dfcd;border:1px solid #c2c6b5;text-align:left;padding:11px 13px;color:#344940;font-size:14px;border-radius:3px;line-height:1.6}.answer-option.selected{background:#315b51;border-color:#315b51;color:#fff1db}.reason-feedback{font-size:14px!important;line-height:1.7!important;background:#dfdac9;padding:10px 12px;border-left:3px solid #9c783e}.modal-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:19px}.subtle-paper-button{background:none;color:#5f766a;border:0;padding:10px;font-size:14px}.hint-text{font-size:13px!important;color:#737565}.touch-controls{display:none}.help-list{line-height:2;font-size:15px;padding-left:20px}.help-list li{margin-bottom:6px}.completion-banner{border:1px solid #8a9e85;background:#dce2cc;padding:14px;border-radius:3px;margin-bottom:14px}.completion-banner h3{font-size:16px;margin:0 0 8px}.completion-banner p{font-size:13px;line-height:1.8;margin:0}.empty-symbol svg{width:44px;height:44px}
@media(min-width:1600px){.notebook{max-height:860px}.app{padding-top:35px}.board{max-height:calc(100vh - 210px);min-height:600px;aspect-ratio:3/2}.play-column{width:100%}}
@media(max-width:1160px){.app{padding:20px}.workspace{grid-template-columns:minmax(0,1fr) 280px;gap:15px}.notebook-heading{padding:20px 16px 13px}.objective{margin-left:14px;margin-right:14px}.notebook-tabs{margin:0 14px}.notebook-body{padding:13px 14px}.chapter-tag{display:none}.click-hint{display:none}.hotspot{font-size:12px;padding:5px 7px}.hotspot svg{width:12px}.dialogue{padding:14px 17px}.dialogue-text{font-size:15px}.dialogue-choices button{font-size:13px;padding:8px}.notebook{max-height:650px;min-height:520px}.scene-bar h2{font-size:16px}}
@media(max-width:900px){.workspace{grid-template-columns:1fr}.notebook{max-height:600px;min-height:430px}.notebook-body{display:block}.notebook-heading{padding:18px 20px}.notebook h2{font-size:22px}.objective{margin:0 20px 14px}.objective p{margin:6px 0 9px}.notebook-tabs{margin:0 20px}.notebook-body{padding:14px 20px}.clue-card{display:inline-block;vertical-align:top;width:calc(50% - 5px);margin-right:5px}.clue-card:nth-child(even){margin-right:0}.notebook-footer{padding:10px 20px}.touch-controls{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:14px}.touch-controls button{background:#24414a;border:1px solid #526969;border-radius:4px;padding:10px 17px;min-height:42px;touch-action:none}.start-card h2{font-size:35px}.page-footer{padding-top:17px}.hotspot{font-size:13px}.start-screen{padding:7%}.start-card p{max-width:410px}.start-hint{margin-top:14px}}
@media(max-width:540px){.app{padding:16px 10px}.topbar{padding-bottom:22px;gap:8px}.brand{gap:10px}.case-seal{width:36px;height:43px;font-size:20px}.brand h1{font-size:23px;letter-spacing:3px}.brand .eyebrow{font-size:9px;letter-spacing:1.2px}.top-actions{gap:9px}.quiet-button{font-size:12px;padding:7px}.icon-button{width:26px;height:26px;font-size:15px}.scene-bar{gap:8px}.scene-bar h2{font-size:15px}.scene-switch button{font-size:12px;padding:7px}.scene-bar .tiny-label{font-size:10px}.scene-caption{font-size:10px;top:10px;left:10px}.hotspot{font-size:10px;padding:4px 6px;gap:3px}.hotspot svg{width:10px;height:10px}.player-name{font-size:10px;bottom:-14px}.start-screen{padding:5%;align-items:center}.start-card .eyebrow{font-size:10px}.start-card h2{font-size:25px;letter-spacing:3px;margin:7px 0 9px}.start-card p{font-size:13px;line-height:1.8;margin:7px 0}.start-card .start-aside{display:none}.gold-button{font-size:14px;padding:9px 22px;margin-top:8px}.start-hint{font-size:10px;margin-top:9px}.dialogue{left:7px;right:7px;bottom:7px;padding:12px;max-height:88%}.dialogue-top{margin-bottom:8px;padding-bottom:7px}.dialogue-top h3{font-size:16px}.dialogue-text{font-size:14px;line-height:1.75}.dialogue-choices{gap:5px}.dialogue-choices button{font-size:12px;padding:7px}.dialogue-top .role{font-size:10px}.interact-prompt{font-size:12px;padding:9px 14px;bottom:18px}.toast{top:30px;font-size:12px;padding:8px 13px}.control-bar{font-size:10px;margin-top:12px}.control-bar kbd{font-size:9px;padding:2px 4px}.control-bar>div{gap:5px}.page-footer{flex-direction:column;gap:4px;font-size:11px}.clue-card{width:100%;margin-right:0}.evidence-options{grid-template-columns:1fr}.modal #modalBody{padding:22px}.modal p{font-size:15px}.modal-top h2{font-size:22px}.modal label.evidence-option{font-size:13px}.board{aspect-ratio:3/2}.touch-controls button{padding:8px 14px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
.actor{aspect-ratio:3/4;transform:translate(-50%,-97%)}.player{width:9.3%;z-index:5}#world{z-index:4}.hotspot{z-index:80;font-size:14px}.sprite-0{clip-path:inset(0 0 4% 0)}.sprite-4{background-size:400% 192.48%}.portrait{width:52px;height:69px;overflow:hidden}.portrait .character{width:52px;height:69px;left:0}.text-portrait{display:grid;place-items:center;font-family:serif;font-size:28px;color:#8f8b6d}.ending-lead{font-family:"Songti SC",SimSun,serif;font-size:21px!important;font-weight:600;margin-bottom:28px}.ending-timeline{border-left:1px solid #b7b8a3;margin:10px 0 0 15px}.ending-step{position:relative;display:flex;gap:17px;padding:0 0 22px 28px}.step-number{position:absolute;left:-15px;top:0;width:30px;height:30px;border:1px solid #b7b8a3;border-radius:50%;display:grid;place-items:center;background:var(--paper);font-size:12px;color:#597465}.ending-step .tiny-label{color:#8b7657;font-size:12px}.ending-step h3{font-family:"Songti SC",SimSun,serif;font-size:21px;margin:5px 0 7px}.ending-step p{font-size:15px;margin:0;line-height:1.9}.ending-coda{padding:13px 17px;background:#dedfcd;border-left:3px solid #6e8a70}.ending-coda p{font-size:15px;margin:6px 0}.deduction-intro{font-size:14px!important}
@media(max-width:1160px){.hotspot{font-size:12px}}@media(max-width:540px){.hotspot{font-size:10px}.ending-step p{font-size:14px}.ending-step h3{font-size:19px}}

.sprite-sheep{background-image:url('assets/sheep.png');background-size:contain;background-position:center bottom}