/* eClassVirtual 1.4 adapter. RedLab keeps its own violet / amber identity. */
:root,[data-ecv-theme="redlab"]{--ecv-accent:#7560e8;--ecv-on-accent:#fff;--bg:var(--ecv-bg);--paper:var(--ecv-surface);--ink:var(--ecv-text);--muted:var(--ecv-muted);--border:var(--ecv-border);--purple:var(--ecv-accent);--purple-light:#f0edff;--amber:#e8c180;--green:var(--ecv-success);--ecv-header-height:84px;--lab-soft:#faf8ff;--lab-purple-text:#6550bd;--lab-success-bg:#edf7f1;--lab-success-text:#316b50;--lab-success-border:#afd3bd;--lab-warning-bg:#fff6e2;--lab-warning-text:#7f5e22;--lab-warning-border:#dfc286;--lab-code-bg:#292238;--lab-code-text:#e1d3ff;font-family:var(--ecv-font);color:var(--ecv-text);background:var(--ecv-bg)}
[data-ecv-theme="redlab"][data-ecv-mode="dark"]{--ecv-accent:#b8a8ff;--ecv-on-accent:#231a36;--purple-light:#302743;--lab-soft:#1c2438;--lab-purple-text:#c5b6ff;--lab-success-bg:#183a30;--lab-success-text:#a8dfbd;--lab-success-border:#3c7558;--lab-warning-bg:#3c3020;--lab-warning-text:#f1d19a;--lab-warning-border:#967540;--lab-code-bg:#211b2e;--lab-code-text:#e1d3ff}
[hidden]{display:none!important}.ecv-ui{margin:0;min-width:320px;font-size:17px;line-height:1.6;background:var(--ecv-bg);color:var(--ecv-text)}.ecv-ui :is(h1,h2,h3,h4){font-family:var(--ecv-font);font-weight:600;color:var(--ecv-text)}.ecv-ui :is(button,input,textarea,select){font-family:var(--ecv-font)}.ecv-ui :is(button,.primary,.secondary,.ecv-btn){font-weight:600}.ecv-ui svg.device-svg{width:24px;height:24px;stroke-width:2.6;fill:none;flex-shrink:0}.ecv-ui .topbar{height:84px;min-height:84px;position:sticky;top:0;z-index:20;display:flex;flex-wrap:nowrap;gap:16px;padding:0 28px;background:var(--ecv-surface);border-color:var(--ecv-border)}.ecv-ui .brand{padding:0;gap:0;flex-shrink:0;letter-spacing:0}.ecv-ui .brand .brand-logo{width:170px;max-width:170px;height:34px;stroke:none;object-fit:contain}.logo-dark{display:none}[data-ecv-mode="dark"] .logo-light{display:none}[data-ecv-mode="dark"] .logo-dark{display:block}.mobile-app-name{display:none}.app-identity{border-left:1px solid var(--ecv-border);padding-left:17px;min-width:0;max-width:194px}.app-identity strong{font-size:20px;font-weight:600;display:block;line-height:1.4}.app-identity>span{display:block;font-size:13px;line-height:1.4;color:var(--ecv-muted);margin-top:3px}.header-navigation{display:flex;flex:1;align-items:center;gap:18px;min-width:0}.ecv-ui nav.main-nav{display:flex;gap:3px;padding:4px;border:1px solid var(--ecv-border);border-radius:10px;background:var(--ecv-bg);margin:0 auto}.ecv-ui nav.main-nav a{font-size:16px;min-height:44px;padding:10px 12px;display:flex;justify-content:center;gap:6px;align-items:center;white-space:nowrap;color:var(--ecv-muted);border-radius:7px;font-weight:600}.ecv-ui nav.main-nav a.active{background:var(--ecv-surface);color:var(--ecv-accent);box-shadow:0 1px 4px #131c2e14}.ecv-ui nav.main-nav a:hover{background:var(--ecv-surface);color:var(--ecv-accent)}.ecv-ui .nav-count{font-size:11px;padding:0 5px;background:var(--purple-light);border-color:transparent;color:var(--lab-purple-text);margin:0}.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}.aula-link{display:inline-flex;align-items:center;gap:7px;min-height:44px;font-size:14px;color:var(--ecv-muted);white-space:nowrap}.aula-link:hover{color:var(--ecv-accent)}.ecv-ui .ecv-btn{min-height:44px;font-weight:600;font-size:14px;white-space:nowrap;padding:10px 13px}.ecv-ui .theme-control{flex-shrink:0;min-width:108px;background:var(--ecv-surface);color:var(--ecv-text)}.ecv-ui .menu-button{display:none;width:44px;height:44px;border-radius:8px;background:var(--ecv-bg);color:var(--ecv-text);border:1px solid var(--ecv-border);flex-shrink:0}.ecv-ui .app-shell{margin-left:0}.app-status{max-width:1280px;margin:25px auto 0;padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:16px}.app-status>div:first-child{display:flex;align-items:center;gap:20px}.status-label{font-size:13px;color:var(--ecv-muted);white-space:nowrap}.status-label>span{margin:0 8px;color:var(--ecv-muted)}.status-label b{color:var(--ecv-text);font-weight:600}.storage-label{font-size:13px}.compact-progress{display:flex;align-items:center;gap:12px;flex-shrink:0}.compact-progress small,.compact-progress b{font-size:13px;white-space:nowrap;color:var(--ecv-muted);font-weight:400}.compact-progress b{color:var(--ecv-accent);font-weight:600;min-width:33px}.compact-progress .track{width:90px;height:5px;background:var(--ecv-border)}.compact-progress .track>span{background:var(--ecv-accent)}.ecv-ui main{max-width:1280px;padding:32px 32px 48px;min-height:calc(100vh - 228px)}.ecv-ui .footer{padding:22px 32px;font-size:13px;line-height:1.7;color:var(--ecv-muted);max-width:1280px;margin:auto;border-color:var(--ecv-border)}.ecv-ui .footer-dot{color:var(--ecv-muted)}.ecv-ui .welcome-line h1{font-size:28px;font-weight:600;letter-spacing:-.6px;line-height:1.4}.ecv-ui .welcome-line p{font-size:17px;color:var(--ecv-muted)}.ecv-ui .welcome-line{margin-bottom:28px}.ecv-ui .edition{font-size:13px;color:var(--ecv-muted)}.ecv-ui .eyebrow{font-size:13px;letter-spacing:1.2px;font-weight:600;color:var(--lab-purple-text)}.ecv-ui .hero{border-radius:12px;min-height:330px;padding:36px 40px;background:linear-gradient(115deg,#292142,#392b64 75%,#46347b)}.ecv-ui .hero-copy{max-width:60%}.ecv-ui .hero h2{font-size:42px;line-height:1.22;letter-spacing:-1px;color:#fff;font-weight:600;margin:17px 0 16px}.ecv-ui .hero h2 em{color:#d5c6ff}.ecv-ui .hero .eyebrow{color:#dfd2ff;font-size:13px;letter-spacing:1.2px}.ecv-ui .hero p{font-size:17px;color:#d7cfe3;max-width:480px;line-height:1.8}.ecv-ui .primary,.ecv-ui .secondary,.ecv-ui .ghost{font-size:16px;min-height:46px;padding:12px 18px;border-radius:8px;font-weight:600;gap:10px}.ecv-ui .primary{color:var(--ecv-on-accent);background:var(--ecv-accent)}.ecv-ui .primary:hover:not(:disabled){filter:brightness(.95);background:var(--ecv-accent)}.ecv-ui .hero .primary{background:#e8c180;color:#3d3048}.ecv-ui .secondary{background:var(--ecv-surface);border-color:var(--ecv-border);color:var(--ecv-text)}.ecv-ui .secondary:hover{background:var(--lab-soft);border-color:var(--ecv-accent)}.ecv-ui .ghost{color:var(--lab-purple-text);background:transparent}.ecv-ui .hero-art.learning-map{width:38%;right:15px;top:24px;height:280px;opacity:1;position:absolute}.map-label{font-size:10px;letter-spacing:1.3px;position:absolute;top:0;width:100%;text-align:center;color:#d8c9f0}.ecv-ui .learning-map .map-lines{width:100%;height:100%;position:absolute;inset:10px 0 0;fill:none;stroke:#9581b4;stroke-width:1;stroke-dasharray:4 5}.map-node{position:absolute;width:74px;height:74px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:4px;border-radius:12px;border:1px solid #8870ac;background:#3a2d55;color:#e2d3ff;transform:translate(-50%,-50%)}.ecv-ui .learning-map .device-svg{width:38px;height:38px;stroke:currentColor;stroke-width:2.6}.map-node span{font-size:10px;color:#e2d3ff}.map-center{left:50%;top:53%;width:88px;height:88px;border-color:#c6a5fa;box-shadow:0 0 45px #bd94ff22}.map-nw{left:21%;top:27%}.map-ne{left:79%;top:27%}.map-sw{left:21%;top:86%}.map-se{left:79%;top:86%}.ecv-ui .stats{gap:16px;margin:24px 0 34px}.ecv-ui .stat{padding:22px 20px;background:var(--ecv-surface);border-color:var(--ecv-border);gap:15px;border-radius:12px}.ecv-ui .stat-value{font-family:var(--ecv-font);font-size:26px;font-weight:600;line-height:1.15}.ecv-ui .stat-label{font-size:13px;color:var(--ecv-muted);line-height:1.5}.ecv-ui .stat-icon{width:44px;height:44px;background:var(--purple-light);color:var(--lab-purple-text)}.ecv-ui .stat:nth-child(2) .stat-icon{background:var(--lab-warning-bg);color:var(--lab-warning-text)}.ecv-ui .stat:nth-child(3) .stat-icon{background:var(--lab-success-bg);color:var(--lab-success-text)}.ecv-ui .stat:nth-child(4) .stat-icon{background:var(--purple-light);color:var(--lab-purple-text)}.ecv-ui .section-head{margin-bottom:22px}.ecv-ui .section-head h2{font-size:20px;font-weight:600;letter-spacing:-.3px}.ecv-ui .section-head p{font-size:16px;color:var(--ecv-muted)}.ecv-ui .section-head>a{font-size:16px;color:var(--lab-purple-text);min-height:44px;display:flex;align-items:center}.ecv-ui .area-grid{gap:20px}.ecv-ui .area-card{padding:24px;min-height:220px;background:var(--ecv-surface);border-color:var(--ecv-border);border-radius:12px}.ecv-ui .area-card:hover{border-color:var(--ecv-accent);box-shadow:0 4px 16px #39265b0a;transform:translateY(-2px)}.ecv-ui .area-icon{width:44px;height:44px;color:var(--lab-purple-text);background:var(--purple-light)}.ecv-ui .area-card:nth-child(3n+2) .area-icon{color:var(--lab-warning-text);background:var(--lab-warning-bg)}.ecv-ui .area-card:nth-child(3n) .area-icon{color:var(--lab-purple-text);background:var(--purple-light)}.ecv-ui .area-number{font-size:13px;letter-spacing:.5px;color:var(--ecv-muted)}.ecv-ui .area-card h3{font-size:19px;font-weight:600;line-height:1.5;margin-bottom:8px}.ecv-ui .area-description{font-size:16px;line-height:1.7;color:var(--ecv-muted)}.ecv-ui .area-foot{font-size:13px;color:var(--ecv-muted);gap:8px;flex-wrap:wrap}.ecv-ui .area-foot svg{color:var(--lab-purple-text)}.ecv-ui .level{font-size:13px;padding:3px 8px;background:var(--purple-light);color:var(--lab-purple-text)}.ecv-ui .bottom-tip{padding:20px 24px;background:var(--purple-light);border-color:var(--ecv-border);gap:16px}.ecv-ui .bottom-tip p{font-size:16px;color:var(--ecv-text)}.ecv-ui .bottom-tip b{color:var(--lab-purple-text);font-weight:600}.ecv-ui .bottom-tip a{font-size:14px;color:var(--lab-purple-text)}.ecv-ui .bottom-tip>svg{color:var(--lab-purple-text)}.ecv-ui .page-title{font-size:28px;font-weight:600;letter-spacing:-.5px}.ecv-ui .page-intro{font-size:17px;color:var(--ecv-muted)}.ecv-ui .filters input,.ecv-ui .filters select{font-size:16px;min-height:44px;background:var(--ecv-surface);border-color:var(--ecv-border);color:var(--ecv-text)}.ecv-ui .filters input::placeholder{color:var(--ecv-muted)}.ecv-ui .result-count{font-size:14px;color:var(--ecv-muted);margin:16px 0}.ecv-ui .case-row{background:var(--ecv-surface);border-color:var(--ecv-border);padding:22px 24px}.ecv-ui .case-copy h3{font-family:var(--ecv-font);font-size:18px;font-weight:600;line-height:1.6}.ecv-ui .case-meta{font-size:13px;line-height:1.7;color:var(--ecv-muted)}.ecv-ui .case-state{font-size:13px;color:var(--lab-purple-text)}.ecv-ui .case-state.done{color:var(--lab-success-text)}.ecv-ui .case-num{background:var(--purple-light);color:var(--lab-purple-text);font-size:18px}.ecv-ui .case-heading h1{font-size:28px;font-weight:600;letter-spacing:-.5px}.ecv-ui .back-link{font-size:14px;color:var(--ecv-muted);min-height:44px;margin-bottom:16px}.ecv-ui .case-layout{grid-template-columns:minmax(0,1fr) 330px;gap:24px;margin-top:28px}.ecv-ui :is(.workbench,.tutor-panel,.journal-card,.method-card){background:var(--ecv-surface);border-color:var(--ecv-border);border-radius:12px}.ecv-ui .workbench-head{font-size:13px;padding:18px 24px;border-color:var(--ecv-border);line-height:1.7;gap:12px}.ecv-ui .workbench-head b{font-weight:600}.ecv-ui .workbench-head>span{color:var(--ecv-muted)}.ecv-ui .stage-track{padding:24px 14px 20px;border-color:var(--ecv-border);background:var(--lab-soft);gap:6px}.ecv-ui .stage-track button{min-height:54px;color:var(--ecv-muted);gap:10px}.ecv-ui .stage-track button>span{width:32px;height:32px;font-size:14px;background:var(--ecv-surface);border-color:var(--ecv-border)}.ecv-ui .stage-track small{font-size:13px;letter-spacing:0}.ecv-ui .stage-track .passed{color:var(--lab-success-text)}.ecv-ui .stage-track .passed>span{background:var(--lab-success-bg);border-color:var(--lab-success-border)}.ecv-ui .stage-track .current{color:var(--lab-purple-text)}.ecv-ui .stage-track .current>span{background:var(--ecv-accent);color:var(--ecv-on-accent);border-color:var(--ecv-accent);box-shadow:0 0 0 4px var(--purple-light)}.ecv-ui .lesson-body{padding:28px}.ecv-ui .stage-label{font-size:13px;color:var(--lab-purple-text);letter-spacing:.7px}.ecv-ui .incident-intro h2{font-size:20px;font-weight:600}.ecv-ui .incident-intro>p{font-size:17px;line-height:1.8;color:var(--ecv-text)}.ecv-ui .original-scene{font-size:14px;padding:14px;border-color:var(--ecv-border);color:var(--lab-purple-text);background:var(--ecv-surface)}.ecv-ui summary{min-height:40px;line-height:1.7;padding-block:5px}.ecv-ui .source-text{font-size:16px;color:var(--ecv-text);line-height:1.9}.ecv-ui .source-text .source-heading{font-family:var(--ecv-font);font-size:19px;font-weight:600;color:var(--ecv-text)}.ecv-ui .source-text .command{font-size:14px;color:var(--lab-code-text);background:var(--lab-code-bg);padding:10px 12px}.ecv-ui .stage-context{padding:22px;background:var(--purple-light);border-color:var(--ecv-border)}.ecv-ui .stage-context>span{font-size:13px;letter-spacing:1px;color:var(--lab-purple-text);font-weight:600}.ecv-ui .stage-context p{font-size:17px;line-height:1.8;color:var(--ecv-text)}.ecv-ui .evidence-context{background:#2d243d;border-color:#2d243d}.ecv-ui .evidence-context>span{color:#d5c3ef}.ecv-ui .evidence-context p{color:#f1eaf8}.ecv-ui .decision-fieldset legend{font-family:var(--ecv-font);font-size:21px;font-weight:600;line-height:1.6;color:var(--ecv-text);letter-spacing:-.2px}.ecv-ui .answer-option{font-size:16px;line-height:1.8;color:var(--ecv-text);background:var(--ecv-surface);border-color:var(--ecv-border);padding:17px 16px;gap:12px}.ecv-ui .answer-option:hover,.ecv-ui .answer-option:has(input:checked){border-color:var(--ecv-accent);background:var(--lab-soft);color:var(--ecv-text)}.ecv-ui .answer-option input{width:18px;height:18px;accent-color:var(--ecv-accent);margin-top:4px}.ecv-ui .answer-letter{min-width:26px;height:28px;font-size:13px;color:var(--lab-purple-text);background:var(--purple-light)}.ecv-ui .answer-option.answer-correct{background:var(--lab-success-bg);border-color:var(--lab-success-border);color:var(--lab-success-text)}.ecv-ui .answer-option.answer-wrong{background:var(--lab-warning-bg);border-color:var(--lab-warning-border);color:var(--lab-warning-text)}.ecv-ui .decision-feedback.correct{background:var(--lab-success-bg);border-color:var(--lab-success-border);color:var(--lab-success-text)}.ecv-ui .decision-feedback.retry{background:var(--lab-warning-bg);border-color:var(--lab-warning-border);color:var(--lab-warning-text)}.ecv-ui .decision-feedback strong{font-size:17px;font-weight:600}.ecv-ui .decision-feedback p{font-size:16px;line-height:1.8}.ecv-ui .decision-feedback small{font-size:13px}.ecv-ui .stage-footer{border-color:var(--ecv-border);align-items:flex-start}.ecv-ui .stage-footer>span{font-size:13px;color:var(--ecv-muted);line-height:1.7}.ecv-ui .stage-footer .locked-note{font-size:13px;max-width:260px}.ecv-ui .guided-workbench{scroll-margin-top:104px}.ecv-ui .tutor-panel{top:104px}.ecv-ui .tutor-header{padding:22px;background:var(--lab-soft);border-color:var(--ecv-border)}.ecv-ui .tutor-header h2{font-size:19px;font-weight:600}.ecv-ui .tutor-icon{background:var(--ecv-accent);color:var(--ecv-on-accent);width:40px;height:40px}.ecv-ui .tutor-status{font-size:13px;color:var(--ecv-muted)}.ecv-ui .tutor-body{padding:22px}.ecv-ui .guide-step{border-color:var(--ecv-border)}.ecv-ui .guide-step>span{font-size:13px;color:var(--ecv-muted);letter-spacing:.7px}.ecv-ui .guide-step strong{font-family:var(--ecv-font);font-size:20px;color:var(--lab-purple-text);font-weight:600}.ecv-ui .guide-step p,.ecv-ui .tutor-intro{font-size:16px;color:var(--ecv-muted);line-height:1.8}.ecv-ui .guide-chain span{font-size:13px;padding:8px;color:var(--lab-purple-text);background:var(--purple-light)}.ecv-ui .guide-chain b{color:var(--ecv-muted)}.ecv-ui .optional-tutor{border-color:var(--ecv-border)}.ecv-ui .optional-tutor summary{font-size:16px;color:var(--lab-purple-text)}.ecv-ui .source-ref{font-size:13px;background:var(--lab-soft);color:var(--ecv-muted);line-height:1.8;border:1px solid var(--ecv-border)}.ecv-ui .chat-note{font-size:13px;color:var(--ecv-muted)}.ecv-ui .note-label{font-size:16px;color:var(--ecv-text);font-weight:600}.ecv-ui textarea{font-size:16px;background:var(--ecv-bg);border-color:var(--ecv-border);color:var(--ecv-text);min-height:100px}.ecv-ui textarea::placeholder{color:var(--ecv-muted)}.ecv-ui .field-hint{font-size:13px;color:var(--ecv-muted)}.ecv-ui .tutor-message{font-size:16px;background:var(--lab-soft);color:var(--ecv-text)}.ecv-ui .tutor-message.user{background:var(--purple-light);color:var(--ecv-text)}.ecv-ui .attempt-history{font-size:14px;color:var(--ecv-muted);border-color:var(--ecv-border)}.ecv-ui .solved-banner h2{font-size:24px;font-weight:600}.ecv-ui .solved-banner p{font-size:17px;color:var(--ecv-muted)}.ecv-ui .solved-banner>span{background:var(--lab-success-bg);color:var(--lab-success-text)}.ecv-ui .diagnosis-summary{background:var(--lab-soft);border-color:var(--ecv-border)}.ecv-ui .diagnosis-summary h3{font-size:18px;color:var(--lab-purple-text)}.ecv-ui .diagnosis-summary p{font-size:17px;color:var(--ecv-text)}.ecv-ui .evidence{border-color:var(--ecv-border)}.ecv-ui .evidence summary{font-size:16px;background:var(--lab-soft);color:var(--lab-purple-text)}.ecv-ui .journal-card h2{font-size:21px}.ecv-ui .journal-card dt{font-size:13px;color:var(--lab-purple-text)}.ecv-ui .journal-card dd{font-size:17px;color:var(--ecv-text)}.ecv-ui .method-card{padding:24px}.ecv-ui .method-card h2{font-size:20px}.ecv-ui .method-card p{font-size:17px;color:var(--ecv-muted)}.ecv-ui .method-card>span{color:var(--lab-purple-text)}.ecv-ui .empty{background:var(--ecv-surface);border-color:var(--ecv-border)}.ecv-ui .empty h2{font-size:20px}.ecv-ui .empty p{font-size:17px;color:var(--ecv-muted)}.ecv-ui .loading{font-size:17px;color:var(--ecv-muted)}.ecv-ui #toast{left:50%;font-size:16px;background:#302743;color:#f2edff;max-width:calc(100vw - 32px);line-height:1.6}.ecv-ui .ecv-table :is(th,td){color:var(--ecv-text)}.ecv-ui .ecv-table :is(.ecv-muted,.ecv-help){color:var(--ecv-muted)}
@media(max-width:1240px) and (min-width:981px){.ecv-ui .topbar{padding:0 20px;gap:12px}.ecv-ui .brand .brand-logo{width:145px;max-width:145px}.app-identity{padding-left:12px;max-width:140px}.app-identity>span{max-width:138px;font-size:11px}.header-navigation{gap:12px}.ecv-ui nav.main-nav a{padding:10px 9px;font-size:14px}.header-actions{gap:9px}.aula-link{font-size:13px}.ecv-ui .ecv-btn{padding:10px;font-size:13px}.ecv-ui .theme-control{min-width:98px}}
@media(max-width:1060px){.ecv-ui .case-layout{grid-template-columns:minmax(0,1fr) 300px;gap:20px}.ecv-ui .area-grid{gap:16px}.ecv-ui .area-card{padding:20px}.ecv-ui .lesson-body{padding:22px}.ecv-ui .stage-track{gap:3px;padding-inline:10px}.ecv-ui .stage-track small{font-size:11px}.ecv-ui .tutor-body,.ecv-ui .tutor-header{padding:18px}}
@media(max-width:980px){:root,[data-ecv-theme="redlab"]{--ecv-header-height:68px}.ecv-ui .topbar{height:68px;min-height:68px;gap:16px;padding:0 24px;justify-content:flex-start}.ecv-ui .brand .brand-logo{width:154px;max-width:154px;height:30px}.app-identity{border-left:1px solid var(--ecv-border);max-width:none}.app-identity strong{font-size:19px}.app-identity>span{display:none}.ecv-ui .theme-control{margin-left:auto;min-width:108px}.ecv-ui .menu-button{display:grid;place-items:center}.header-navigation{display:none;position:absolute;top:68px;left:0;right:0;padding:20px 24px;background:var(--ecv-surface);border-bottom:1px solid var(--ecv-border);box-shadow:0 12px 25px #0b142314;z-index:21}.header-navigation.open{display:flex;align-items:stretch;flex-direction:column;gap:18px}.ecv-ui nav.main-nav{margin:0;justify-content:space-between}.ecv-ui nav.main-nav a{flex:1;font-size:16px;min-height:44px}.header-actions{justify-content:flex-end;gap:18px;border-top:1px solid var(--ecv-border);padding-top:16px}.aula-link{font-size:16px}.app-status{margin-top:22px;padding:0 24px}.storage-label{display:none}.ecv-ui main{padding:28px 24px 40px}.ecv-ui .case-layout{grid-template-columns:minmax(0,1fr)}.ecv-ui .tutor-panel{position:static}.ecv-ui .guided-workbench{scroll-margin-top:88px}.ecv-ui .stage-track small{font-size:13px}.ecv-ui .stats{grid-template-columns:repeat(2,1fr)}.ecv-ui .hero h2{font-size:36px}.ecv-ui .hero{padding:32px;min-height:325px}.ecv-ui .hero-copy{max-width:61%}.ecv-ui .hero-art.learning-map{width:35%;right:10px;transform:scale(.9);transform-origin:right center}.ecv-ui .footer{padding:20px 24px}.ecv-ui .area-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ecv-ui .edition{display:none}.ecv-ui .section-head{align-items:flex-start}.ecv-ui .guide-chain{justify-content:flex-start;gap:20px}.ecv-ui .tutor-header{padding:22px}.ecv-ui .tutor-body{padding:22px}}
@media(max-width:600px){.ecv-ui .topbar{gap:10px;padding:0 16px}.ecv-ui .brand{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:4px}.ecv-ui .brand .brand-logo{width:140px;max-width:140px;height:24px}.mobile-app-name{font-size:13px;font-family:var(--ecv-font);font-weight:600;line-height:1;color:var(--ecv-text);display:block}.app-identity{display:none}.ecv-ui .theme-control{font-size:13px;padding-inline:9px;min-width:98px}.ecv-ui .menu-button{width:44px;height:44px}.header-navigation{padding:18px 16px}.ecv-ui nav.main-nav{gap:0}.ecv-ui nav.main-nav a{font-size:13px;padding:10px 6px}.ecv-ui .nav-count{display:none}.app-status{padding:0 16px;margin-top:18px;flex-direction:column;align-items:flex-start;gap:10px}.compact-progress{width:100%;gap:10px}.compact-progress .track{flex:1;width:auto;max-width:140px}.compact-progress small,.compact-progress b,.status-label{font-size:13px}.ecv-ui main{padding:24px 16px 36px}.ecv-ui .welcome-line h1{font-size:24px;letter-spacing:-.4px}.ecv-ui .welcome-line p{font-size:16px}.ecv-ui .hero{padding:28px 24px;min-height:340px}.ecv-ui .hero-copy{max-width:100%}.ecv-ui .hero h2{font-size:36px;line-height:1.28}.ecv-ui .hero p{font-size:17px;max-width:none}.ecv-ui .hero-art.learning-map{display:none}.ecv-ui .hero .eyebrow{font-size:11px;line-height:1.7;letter-spacing:.9px}.ecv-ui .stats{gap:12px;margin-top:20px}.ecv-ui .stat{padding:18px 14px;gap:10px;align-items:flex-start}.ecv-ui .stat-icon{width:34px;height:34px;flex-shrink:0}.ecv-ui .stat-icon svg{width:20px;height:20px}.ecv-ui .stat-value{font-size:24px}.ecv-ui .stat-label{font-size:13px}.ecv-ui .section-head h2{font-size:20px}.ecv-ui .section-head p{font-size:16px}.ecv-ui .section-head>a{font-size:13px;white-space:normal;max-width:100px;min-width:80px;justify-content:flex-end;text-align:right;line-height:1.6}.ecv-ui .area-grid{grid-template-columns:1fr;gap:16px}.ecv-ui .area-card{min-height:190px;padding:22px}.ecv-ui .area-card h3{font-size:20px}.ecv-ui .area-top{margin-bottom:16px}.ecv-ui .area-description{font-size:17px}.ecv-ui .area-foot{font-size:13px}.ecv-ui .bottom-tip{padding:20px}.ecv-ui .bottom-tip p{font-size:16px}.ecv-ui .footer{padding:20px 16px;gap:10px;font-size:13px}.ecv-ui .page-title,.ecv-ui .case-heading h1{font-size:24px;line-height:1.5}.ecv-ui .page-intro{font-size:17px}.ecv-ui .case-layout{gap:20px;margin-top:22px}.ecv-ui .workbench-head{font-size:13px;padding:16px;flex-wrap:wrap}.ecv-ui .stage-track{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px 4px;padding:20px 12px}.ecv-ui .stage-track small{font-size:13px}.ecv-ui .guided-workbench .lesson-body{padding:22px 16px}.ecv-ui .stage-label{font-size:13px;line-height:1.6}.ecv-ui .incident-intro h2{font-size:21px}.ecv-ui .incident-intro>p{font-size:17px}.ecv-ui .decision-fieldset legend{font-size:20px}.ecv-ui .answer-option{font-size:16px;padding:16px 12px;gap:9px;align-items:flex-start}.ecv-ui .answer-option input{width:17px;height:17px;flex-shrink:0}.ecv-ui .answer-letter{min-width:23px;height:25px;font-size:13px}.ecv-ui .stage-context{padding:18px}.ecv-ui .stage-context p{font-size:17px}.ecv-ui .primary,.ecv-ui .secondary,.ecv-ui .ghost{font-size:16px;min-height:46px}.ecv-ui .stage-footer .locked-note{max-width:none}.ecv-ui .case-row{padding:18px 15px;gap:12px}.ecv-ui .case-copy h3{font-size:17px}.ecv-ui .case-num{width:34px;height:36px;flex-shrink:0;font-size:16px}.ecv-ui .case-state{font-size:13px;line-height:1.6;max-width:72px;white-space:normal}.ecv-ui .case-meta{font-size:13px;gap:10px}.ecv-ui .filters{gap:10px}.ecv-ui .filters select{font-size:14px;padding-inline:9px;width:calc(50% - 5px)}.ecv-ui .filters input{font-size:16px}.ecv-ui .method-grid{grid-template-columns:1fr}.ecv-ui .source-ref{font-size:13px}.ecv-ui .source-text{font-size:16px}.ecv-ui .source-text .command{font-size:14px}.ecv-ui .journal-card{padding:22px 18px}.ecv-ui .section-head:has(#export){flex-wrap:wrap}.ecv-ui .solved-banner h2{font-size:22px}}
@media(prefers-reduced-motion:reduce){.ecv-ui *{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.ecv-ui .skip{background:var(--ecv-surface);color:var(--ecv-text);font-size:16px;z-index:50;border:1px solid var(--ecv-border);border-radius:8px}.ecv-ui .skip:focus{top:12px}

/* Reference diagrams share the app palette and official device icons. */
.ecv-ui .topology-panel{margin:26px 0 28px;border:1px solid var(--ecv-border);border-radius:12px;background:var(--ecv-surface);overflow:hidden;min-width:0}
.ecv-ui .topology-panel>summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;cursor:pointer;font-size:18px;font-weight:600;border-bottom:1px solid var(--ecv-border)}
.ecv-ui .topology-panel>summary::-webkit-details-marker{display:none}.topology-panel summary small{font-size:14px;display:inline-block;margin-left:16px;font-weight:400;color:var(--ecv-muted)}.topology-toggle{color:var(--ecv-accent);font-size:24px}.topology-panel[open] .topology-toggle{transform:rotate(180deg)}
.topology-toolbar{display:flex;justify-content:space-between;align-items:center;padding:14px 22px 0;gap:16px}.topology-toolbar p{margin:0;font-size:15px;color:var(--ecv-muted)}.topology-toolbar a{font-size:15px;white-space:nowrap;min-height:44px;display:flex;align-items:center;color:var(--lab-purple-text)}
.topology-scroll{overflow:auto;max-width:100%;overscroll-behavior-x:contain}.ecv-ui svg.case-topology-svg{display:block;width:1000px;min-width:1000px;max-width:none;height:auto;fill:none;stroke:none;margin:auto}.ecv-ui .case-topology-svg svg{width:56px;height:56px;fill:none;stroke:currentColor;stroke-width:2.6}
.topology-caption{display:flex;gap:10px;padding:14px 20px;border-top:1px solid var(--ecv-border);background:var(--lab-soft);font-size:14px;color:var(--ecv-muted);line-height:1.7}.topology-dot{color:var(--ecv-accent)}.topology-source{white-space:nowrap}.topology-mobile-hint{display:none}
@media(max-width:1060px){.ecv-ui .stage-track{grid-template-columns:repeat(4,minmax(0,1fr));row-gap:14px}.ecv-ui .stage-track small{font-size:13px}}
@media(max-width:600px){.ecv-ui .topology-panel>summary{padding:16px}.topology-panel summary small{display:block;margin:3px 0 0}.topology-toolbar{padding:12px 16px 0;flex-wrap:wrap;gap:0}.topology-toolbar p{width:100%}.topology-caption{padding:14px 16px}.topology-mobile-hint{display:inline}.ecv-ui .decision-fieldset legend{font-size:21px}.ecv-ui .answer-option{font-size:16px;line-height:1.7}}
/* Reflow PDF prose; preserve alignment only inside technical blocks. */
.ecv-ui .scene-source{white-space:normal;overflow-wrap:break-word;font-size:16px;line-height:1.85;padding:22px;min-width:0}
.ecv-ui .scene-source>p{margin:0 0 16px}.ecv-ui .scene-source>:last-child{margin-bottom:0}
.ecv-ui .scene-source .source-heading{display:block;font-size:19px;line-height:1.45;font-weight:600;margin:26px 0 12px;color:var(--ecv-text)}.ecv-ui .scene-source>.source-heading:first-child{margin-top:0}
.ecv-ui .source-list{padding-left:26px;margin:12px 0 22px}.ecv-ui .source-list li{display:list-item;padding:0 0 0 5px;margin:0 0 9px;line-height:1.8}.ecv-ui .source-list li::marker{color:var(--lab-purple-text);font-weight:600}
.ecv-ui .source-dialogue{margin:16px 0 20px;border-left:3px solid var(--ecv-accent);padding:12px 16px;background:var(--lab-soft);border-radius:0 8px 8px 0}.ecv-ui .source-dialogue p{margin:0}
.ecv-ui .source-figure{margin:18px 0 24px;max-width:100%;min-width:0}.ecv-ui .source-figure figcaption{font-size:13px;color:var(--ecv-muted);margin-bottom:7px}
.ecv-ui .source-pre{display:block;white-space:pre;overflow:auto;max-width:100%;padding:18px;border:1px solid var(--ecv-border);border-radius:8px;background:var(--lab-code-bg);color:var(--lab-code-text);font-size:14px;line-height:1.75;overscroll-behavior-x:contain;margin:0}.ecv-ui .source-pre code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:inherit;white-space:inherit;background:transparent;color:inherit;padding:0}
.ecv-ui .source-table-scroll{max-width:100%;overflow:auto;overscroll-behavior-x:contain;margin:18px 0 24px;border:1px solid var(--ecv-border);border-radius:8px}.ecv-ui .source-table{border-collapse:collapse;width:100%;font-size:15px;line-height:1.65;text-align:left}.ecv-ui .source-table :is(th,td){padding:12px 14px;vertical-align:top;border-bottom:1px solid var(--ecv-border);min-width:125px;overflow-wrap:normal}.ecv-ui .source-table th{font-weight:600}.ecv-ui .source-table thead{background:var(--purple-light);color:var(--lab-purple-text)}.ecv-ui .source-table tbody th{font-size:15px;font-weight:500}.ecv-ui .source-table tr:last-child :is(th,td){border-bottom:0}.ecv-ui .source-table tbody tr:nth-child(even){background:var(--lab-soft)}
@media(max-width:600px){.ecv-ui .scene-source{padding:18px 14px;font-size:16px;line-height:1.85}.ecv-ui .scene-source .source-heading{font-size:18px}.ecv-ui .source-table :is(th,td){padding:10px 12px}.ecv-ui .source-pre{padding:14px;font-size:14px}}
/* The short incident uses the same reading structure as the complete scenario. */
.ecv-ui .incident-copy{padding:0;margin:16px 0 24px;font-size:17px;line-height:1.85}.ecv-ui .incident-copy>p{margin:0 0 16px}.ecv-ui .incident-copy .source-heading{font-size:17px;margin:20px 0 10px}.ecv-ui .incident-copy .source-list{margin:12px 0 18px}.ecv-ui .incident-inline{font-family:inherit;font-size:inherit;font-weight:600;background:var(--purple-light);color:var(--lab-purple-text);border-radius:4px;padding:1px 4px;box-decoration-break:clone;-webkit-box-decoration-break:clone;overflow-wrap:anywhere}
@media(max-width:600px){.ecv-ui .incident-copy{font-size:16px;padding:0}.ecv-ui .incident-copy .source-table-scroll{margin-inline:0}}