:root{--bg:#0c2028;--panel:#112e38;--panel2:#163842;--line:#294953;--muted:#94b1b9;--text:#e7f0f1;--accent:#64deca;--ink:#102e38;--warn:#f6c977;--radius:12px}*{box-sizing:border-box}html{color-scheme:dark}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.65 system-ui,-apple-system,"Microsoft YaHei","Noto Sans CJK SC",sans-serif}button,input,select,textarea{font:inherit}button,a{touch-action:manipulation}button{border:1px solid var(--line);border-radius:7px;background:var(--panel2);color:var(--text);padding:7px 12px;cursor:pointer;transition:background .15s,border-color .15s}button:hover{background:#23505b;border-color:#75cbbb}button:focus-visible,a:focus-visible{outline:3px solid #ffcf84;outline-offset:3px}button[aria-pressed=true],button.active{background:#1c514f;border-color:#54b7aa;color:#b2fff0}button.primary,.primary{background:var(--accent);color:var(--ink);border-color:var(--accent);font-weight:750}button:disabled{opacity:.55;cursor:default}a{color:var(--accent);text-underline-offset:3px}h1,h2,h3,h4,p{margin:0}h1{font-size:24px;line-height:1.3;letter-spacing:.03em}h2{font-size:22px;line-height:1.4}h3{font-size:17px;margin-bottom:8px}.muted{color:var(--muted)}small{font-size:10px;letter-spacing:.12em}.mast{display:flex;align-items:center;gap:15px;padding:16px 25px 17px;min-height:92px;background:#102e38;border-bottom:1px solid var(--line)}.brandmark{height:48px;width:47px;display:flex;gap:5px;align-items:flex-end;border:1px solid #3f7b7b;padding:8px;border-radius:10px}.brandmark i{background:var(--accent);width:7px;transform:skewY(-20deg);border-radius:2px}.brandmark i:nth-child(1){height:16px}.brandmark i:nth-child(2){height:30px}.brandmark i:nth-child(3){height:23px}.brand strong{font-size:13px;color:var(--accent);font-weight:650;letter-spacing:.2em}.brand strong span{letter-spacing:0;font-size:11px;color:var(--muted);font-weight:450;margin-left:20px}.brand h1{margin-top:3px}.mast-right{margin-left:auto;display:flex;align-items:center;gap:13px}.version{font-size:11px;border:1px solid #42666d;padding:4px 8px;border-radius:20px;color:#bfd3d6}.mainnav{display:flex;gap:4px;padding:0 24px;height:54px;align-items:center;background:#0e252e;overflow:auto}.mainnav button{border:0;background:transparent;padding:12px 14px;font-size:13px;white-space:nowrap;position:relative;border-radius:0}.mainnav button.active{color:var(--accent);background:transparent}.mainnav button.active:after{content:"";position:absolute;height:3px;bottom:0;left:14px;right:14px;background:var(--accent)}#progress-top{font-size:10px;background:#244850;border-radius:5px;padding:2px 6px;margin-left:3px}.ribbon{display:flex;align-items:center;gap:12px;padding:9px 25px;font-size:11px;background:#14313a;min-height:39px;color:#b9ced1}.ribbon b{color:var(--accent);font-weight:500}.dot{display:inline-block;width:6px;height:6px;background:#6cdbc1;border-radius:50%;margin-right:7px}.ribbon-note{margin:auto}#engine-status{color:#9ce2d2;font-size:10px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 326px;gap:12px;padding:12px 16px 0}.scene-column{min-width:0}.scene{height:clamp(460px,calc(100dvh - 330px),740px);position:relative;background:#e6edef;border-radius:12px;overflow:hidden;border:1px solid #3a5660;min-height:480px}canvas{width:100%;height:100%;display:block;outline:none;cursor:grab}canvas:active{cursor:grabbing}#labels{position:absolute;inset:0;pointer-events:none}.unit-label{position:absolute;left:0;top:0;font-size:10px;border:1px solid #bccfce;background:rgba(249,254,253,.94);color:#244b55;border-radius:4px;padding:3px 7px;pointer-events:auto;white-space:nowrap;box-shadow:0 2px 4px #234a5517}.unit-label.selected{background:#175359;color:#fff;border-color:#66d7c4}.view-title{position:absolute;left:22px;top:20px;pointer-events:none;color:#153a44}.view-title small{color:#577880;letter-spacing:.13em;font-weight:650;font-size:10px}.view-title h2{font-size:27px;line-height:1.25;margin:8px 0;letter-spacing:.08em}.view-title p{font-size:11px;color:#6c868b}.camera-bar{position:absolute;right:16px;top:18px;display:flex;gap:5px}.camera-bar button{color:#245462;background:#f7fbfbcc;font-size:11px;border-color:#c5d9d7;padding:4px 11px}.model-tools{position:absolute;left:17px;right:17px;bottom:39px;display:flex;gap:5px;flex-wrap:wrap;align-items:center}.model-tools button{padding:5px 9px;font-size:11px;background:#fffdfae6;border-color:#b7ced0;color:#244752;box-shadow:0 2px 4px #254f4411}.model-tools button[aria-pressed=true]{background:#154a53;color:#d9ffed;border-color:#31726f}.scene-caption{position:absolute;bottom:0;left:0;right:0;min-height:30px;background:#dae5e7ef;display:flex;justify-content:space-between;gap:10px;align-items:center;padding:7px 15px;color:#536f79;font-size:9px}.flowbar{display:flex;align-items:center;gap:7px;padding:10px 2px 9px;overflow:auto}.flowbar button{white-space:nowrap;font-size:11px;padding:4px 7px;background:transparent;border-color:transparent;color:#8ca8af}.flowbar button[data-flow]:before{content:"";width:16px;height:3px;display:inline-block;vertical-align:middle;margin-right:6px;background:var(--line);border-radius:3px}.flowbar button.on{color:#eaf4f5;background:#15353e}.flowbar button.on:before{background:var(--line)}.flowbar button[data-flow]{--line:#45636b}.flowbar #flow-explain{margin-left:auto;color:var(--accent);font-size:10px}.unit-strip{display:flex;overflow-x:auto;gap:6px;padding-bottom:9px}.unit-strip button{white-space:nowrap;min-width:100px;font-size:11px;padding:8px 10px;text-align:left;background:#102c35}.unit-strip small{display:block;color:#80b5b4;font-size:9px}.unit-strip button.active{border-color:#57a89e}.inspector{border:1px solid #2a4851;background:var(--panel);border-radius:12px;overflow:auto;height:clamp(555px,calc(100dvh - 234px),835px);padding:21px 20px}.unit-eyebrow{font-size:10px;color:var(--accent);letter-spacing:.15em;margin-bottom:8px}.inspector h2{font-size:23px}.inspector .meaning{font-size:12px;color:#b9ccd1;margin:12px 0 16px;line-height:1.85}.mini-tags{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:17px}.mini-tags span{font-size:9px;background:#23434a;color:#bdd6d9;border-radius:3px;padding:2px 6px;font-family:ui-monospace,monospace}.info-block{padding:13px 0;border-top:1px solid #2b4a53}.info-block h3{font-size:11px;color:#71d1bc;font-weight:650;letter-spacing:.08em;margin-bottom:7px}.info-block p{font-size:12px;color:#c3d6da;line-height:1.85}.boundary{background:#493f292e;border:1px solid #806e3b73;border-radius:8px;padding:10px 12px;font-size:11px;line-height:1.85;color:#e3c48c;margin:13px 0}.roleselect{width:100%;padding:7px 8px;border:1px solid var(--line);border-radius:5px;background:#0b252d;color:var(--text);font-size:12px;margin-bottom:8px}.linked-days{display:flex;flex-wrap:wrap;gap:5px}.linked-days button{padding:3px 7px;font-size:11px}.inspector .actions{display:flex;gap:8px;margin-top:17px}.actions button{font-size:11px;flex:1}.foot{display:flex;align-items:center;gap:13px;padding:12px 21px 16px;color:#6e929c;font-size:10px;flex-wrap:wrap}.foot strong{color:#b3d0d3}.foot #stats{margin-left:auto}.foot button{font-size:10px;padding:3px 8px;background:none}body.wide .workspace{grid-template-columns:1fr}body.wide .inspector{display:none}body.wide .scene{height:calc(100dvh - 303px);min-height:520px}body.wide .view-title h2{font-size:32px}#render-error{position:absolute;left:15%;right:15%;top:45%;padding:25px;background:#fff;color:#17333d;border:1px solid #b9c9c9;border-radius:12px;z-index:6;font-size:13px}dialog{width:min(1100px,94vw);max-height:92dvh;border:1px solid #45656c;border-radius:16px;background:#112e38;color:var(--text);padding:0;box-shadow:0 28px 90px #0008}dialog::backdrop{background:#071921b8;backdrop-filter:blur(4px)}.dialog-header{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border-bottom:1px solid #35525b;position:sticky;top:0;z-index:4;background:#16343ef5}.dialog-header small{color:var(--accent);font-size:10px}.dialog-header h2{font-size:22px;margin-top:2px}.dialog-header>button{font-size:27px;line-height:1;padding:3px 11px;background:transparent;border:0}#dialog-content{padding:23px;max-height:calc(92dvh - 95px);overflow:auto}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.callout{border-left:3px solid var(--accent);padding:12px 16px;background:#0d262f;margin-bottom:16px;font-size:13px}.smallnote{font-size:11px;color:var(--muted);line-height:1.9}.box{border:1px solid #34515a;background:#14333d;border-radius:10px;padding:17px}.box h3{font-size:16px}.box p{font-size:12px;color:#bed2d7;line-height:1.9;margin-bottom:9px}.kpi{font-size:27px;font-weight:650;color:var(--accent)}.kpi small{font-size:12px;color:var(--muted);margin-left:6px}.pill{display:inline-block;padding:2px 7px;background:#1e4c50;border-radius:3px;color:#b7f4e7;font-size:10px;margin-right:6px}.warn{color:#f4ce87}.course-layout{display:grid;grid-template-columns:285px 1fr;gap:24px}.search{width:100%;background:#0a242d;border:1px solid #3e5d65;border-radius:6px;color:var(--text);padding:9px 12px}.stage-caption{font-size:11px;color:#67cbb9;margin:16px 0 7px}.course-list{max-height:66dvh;overflow:auto;padding-right:7px}.course-item{display:block;width:100%;text-align:left;background:transparent;border:1px solid transparent;font-size:12px;padding:8px;margin:3px 0;line-height:1.6}.course-item em{font-style:normal;color:#7ba8ad;font-size:10px;margin-right:7px}.course-item.done:after{content:' ✓';color:var(--accent)}.lesson-title{margin:6px 0 15px!important;font-size:23px}.lesson-content p{color:#c2d7db;font-size:13px;line-height:1.95;margin-bottom:15px}.lesson-content h3{font-size:14px;color:#76dcc8;margin-top:19px}.lesson-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:19px}.lesson-actions button{font-size:12px}textarea{width:100%;min-height:100px;resize:vertical;background:#0b252e;border:1px solid #3a5b63;border-radius:6px;color:var(--text);padding:12px;line-height:1.85;font-size:12px}label.field{display:block;font-size:12px;color:#b6cdd0;margin:12px 0 4px}.case-card{cursor:pointer;transition:transform .15s;border:1px solid #365661}.case-card:hover{transform:translateY(-2px);border-color:var(--accent)}.case-card small{color:#78d7c5}.case-card h3{font-size:16px;margin-top:8px}.case-card button{font-size:11px;margin-top:5px}.case-head{display:flex;align-items:center;gap:9px;margin-bottom:16px;flex-wrap:wrap}.case-head h3{font-size:19px;margin:0}.case-facts{margin:15px 0;padding:15px;background:#0e2832;border-radius:8px}.case-facts p{font-size:12px;margin:7px 0;color:#c4d6db}.step-indicator{display:flex;gap:6px;margin:20px 0}.step-indicator span{height:4px;flex:1;background:#345761;border-radius:4px}.step-indicator span.done{background:var(--accent)}.option{display:block;width:100%;text-align:left;margin-top:10px;padding:11px 14px;font-size:13px}.option.right{border-color:#5ee0b9;background:#16483e}.option.wrong{border-color:#ce8d85;background:#492f32}.feedback{background:#253e40;padding:13px 15px;margin:16px 0;border-radius:7px;font-size:13px}.case-footer{display:flex;gap:9px;margin-top:18px;flex-wrap:wrap}.metric-row{display:flex;justify-content:space-between;gap:10px;margin:9px 0;font-size:12px}.metric-row input{width:112px;padding:6px 8px;background:#09252e;color:var(--text);border:1px solid #43616a;border-radius:5px;text-align:right}.calc-out{font-size:26px;color:var(--accent);margin:7px 0}.formula{font-family:ui-monospace,monospace;font-size:11px;color:#aed5d5;background:#09252f;padding:8px;border-radius:5px;margin:10px 0}.ref{padding:13px 0;border-bottom:1px solid #2c5057;font-size:12px}.ref p{color:#bed2d7;margin:6px 0}.ref a{word-break:break-word}.qa{padding:12px;background:#0e2830;border-radius:8px;margin-bottom:8px;font-size:12px}.qa b{display:block;color:#ecc78a;margin-bottom:4px}.qa p{color:#c4d6db}#toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);padding:10px 20px;background:#cff6ec;color:#12353a;border-radius:8px;box-shadow:0 8px 30px #0005;z-index:99;opacity:0;pointer-events:none;transition:opacity .15s}#toast.show{opacity:1}.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:15px 0}.download-grid a{display:block;background:#23434b;border:1px solid #47716f;padding:12px;border-radius:8px;text-decoration:none;font-size:13px}.path-row{font-size:12px;margin:10px 0;padding:13px;background:#0d2830;border-left:4px solid var(--path,#67c8bb);border-radius:6px}.path-row b{font-size:13px;display:block}.path-row p{color:#bfd6d8;margin-top:5px}.empty{padding:25px;color:var(--muted)}
@media(min-width:1700px){.workspace{grid-template-columns:minmax(0,1fr) 368px}.scene{height:calc(100dvh - 317px);max-height:940px}.inspector{height:calc(100dvh - 222px);max-height:1040px}}
@media(max-width:1060px){.workspace{grid-template-columns:minmax(0,1fr) 286px}.mast{padding:15px 17px}.version,.ribbon-note{display:none}.view-title h2{font-size:21px}.camera-bar{right:10px}.camera-bar button{padding:4px 8px}.view-title p{display:none}.scene{min-height:490px}.model-tools{gap:3px;left:10px;right:10px}.model-tools button{font-size:10px;padding:5px 7px}.scene-caption span:first-child{display:none}.flowbar .muted{display:none}.inspector{padding:17px 15px}.inspector h2{font-size:20px}.mainnav{padding:0 10px}.mainnav button{padding:12px 11px}.ribbon{padding:8px 17px}.course-layout{grid-template-columns:245px 1fr}}
@media(max-width:760px){.mast{gap:9px;padding:13px 12px;min-height:77px}.brandmark{width:34px;height:39px;padding:6px;gap:3px}.brandmark i{width:6px}.brandmark i:nth-child(2){height:24px}.brand strong{font-size:10px}.brand strong span{display:none}h1{font-size:18px}.mast-right{gap:3px}.mast-right button{padding:7px 8px;font-size:10px}.mainnav{height:46px;padding:0 5px}.mainnav button{font-size:11px;padding:10px}.ribbon{font-size:10px;padding:7px 11px;gap:4px}.ribbon #engine-status{margin-left:auto;font-size:9px}.workspace{display:block;padding:8px}.scene{height:495px;min-height:420px;border-radius:9px}.view-title{top:13px;left:14px}.view-title h2{font-size:21px}.view-title small{font-size:8px}.camera-bar{top:14px;right:9px;gap:3px}.camera-bar button{font-size:10px;padding:4px 7px}.model-tools{bottom:44px}.model-tools button{font-size:10px;padding:4px 7px}.scene-caption{font-size:8px;padding:6px 10px}.unit-label{font-size:9px;padding:3px 5px}.flowbar{padding:8px 0;gap:2px}.flowbar button{font-size:10px;padding:4px}.flowbar #flow-explain{display:none}.unit-strip button{min-width:94px}.inspector{height:auto;max-height:none;padding:19px;margin-top:6px}.inspector .meaning{font-size:13px}.info-block p{font-size:13px}.foot{padding:13px;gap:8px}.foot #stats{margin-left:0}.foot #offline-status{display:block;width:100%}.course-layout{display:block}.course-list{max-height:200px;margin-bottom:20px;border-bottom:1px solid var(--line)}.course-item{padding:5px 8px}.dialog-header{padding:13px 16px}.dialog-header h2{font-size:19px}#dialog-content{padding:15px}.grid2,.grid3{grid-template-columns:1fr}.lesson-title{font-size:21px}.download-grid{grid-template-columns:1fr}.view-title{max-width:45%}body.wide .scene{height:70dvh;min-height:480px}dialog{max-height:95dvh;width:96vw}.ribbon b{font-weight:500}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}@media print{body{background:white;color:#111}.mast,.mainnav,.ribbon,.workspace,.foot,#toast{display:none}dialog[open]{display:block;position:static;width:100%;max-height:none;border:0;box-shadow:none;color:#111;background:white}#dialog-content{max-height:none;overflow:visible}.dialog-header{background:white}.dialog-header button{display:none}.box,.callout,.boundary{background:white;color:#111}.box p,.smallnote,.lesson-content p{color:#333}}
.full{width:100%}.completion{display:flex;align-items:flex-start;gap:10px;margin:18px 0;color:#34535b;font-size:14px}.completion input{width:18px;height:18px;accent-color:var(--mint);flex-shrink:0}.prompt-output{min-height:360px;font-size:13px!important;line-height:1.8}.metric-result{text-align:center;background:#e6f6f0;border-radius:16px;padding:28px;margin-bottom:20px}.metric-result h2{font-size:60px;margin:10px}.metric-result h2 small{font-size:20px;color:#5c777c}.metric-result p{margin:4px}.step-indicator .current{background:#153e45;color:white}.case-facts{border-left:4px solid #2a9f89;padding:8px 20px;background:#eff8f5;margin:20px 0}.case-facts h3{margin:6px 0}.course-layout aside{min-width:0}.course-item i{font-style:normal;font-size:13px}.metric-row small{display:block;color:#758b91;font-size:11px}.roleselect select{margin-top:8px;width:100%}.path-row>span{color:var(--line);font-weight:800;min-width:90px}.download-grid .button{border:1px solid #cfdddd;border-radius:8px;padding:10px;text-align:center;font-size:13px;background:white}.download-grid button{min-height:45px}.mini-tags span{font-variant-numeric:tabular-nums}
@media(max-width:760px){.view-title h2{font-size:21px}.metric-result h2{font-size:44px}.prompt-output{min-height:420px}.dialog-header h2{font-size:19px}.course-layout aside{max-height:250px;overflow-y:auto;margin-bottom:18px}}
/* Consistent dark workspace surfaces */
.completion{color:#bfd6da}.completion input{accent-color:var(--accent)}.case-card{background:#14333d;border-radius:12px;padding:20px}.case-card p{font-size:12px;color:#b9ced3;line-height:1.9;margin:10px 0}.case-card .linked-days{margin-bottom:10px}.case-card .linked-days span{font-size:10px;color:#8dc6bc;padding:2px 5px;border:1px solid #315550;border-radius:4px}.case-facts{background:#0e2832}.metric-result{background:#19433e}.metric-result h2{color:var(--accent)}.metric-result p{color:#c3dcd6}.kpi{padding:14px;background:#14343e;border:1px solid #34545d;border-radius:10px;min-width:0}.kpi>span{display:block;font-size:12px;color:#9bbec5;font-weight:450;margin-bottom:7px}.kpi>strong{display:block;font-size:27px;line-height:1.25;overflow-wrap:anywhere}.kpi>strong small{display:inline-block;font-size:11px;letter-spacing:0}.step-indicator span{height:auto;min-height:35px;padding:7px;text-align:center;font-size:11px}.step-indicator span.done{background:#236359;color:#d6fff4}.step-indicator .current{border:1px solid #6cbaa5;background:#1c4b46}.option>b{display:inline-block;min-width:32px;color:#92daca}.field select,.roleselect select{padding:9px;border:1px solid #3f6168;background:#0b252e;color:#dfeded;border-radius:6px;width:100%}.download-grid .button{background:#23434b;border-color:#47716f}.course-item{display:flex;gap:9px;align-items:flex-start}.course-item>span{flex-shrink:0;color:#84abae;font-size:10px;padding-top:2px}.course-item>b{font-weight:450;flex:1}.course-item.done:after{content:none}.course-item i{color:#91d0c4}.actions{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.path-row{display:flex;gap:15px}.path-row h3{font-size:14px}.qa>span{color:#e6b9ad;font-size:11px}.qa p{margin-top:7px}
@media(max-width:760px){.grid2,.grid3{grid-template-columns:1fr}.case-card{padding:16px}.kpi>strong{font-size:24px}.step-indicator span{font-size:10px;padding:6px 3px}.path-row{display:block}.path-row>span{display:block;margin-bottom:6px}}