@import "https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap";:root{color:#e6e7e3;font-synthesis:none;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--muted:#8b979b;--line:#2c3336;--amber:#edb77a;--mint:#83d5c7;background:#121618;font-family:DM Sans,system-ui,sans-serif;font-size:14px}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{color:inherit;cursor:pointer;border:1px solid var(--line);background:0 0;transition:background .18s,border-color .18s}button:hover{background:#293035;border-color:#65706c}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--amber);outline-offset:3px}button:disabled{opacity:.35;cursor:not-allowed}a{color:var(--amber);text-decoration:none}button svg{flex-shrink:0}button,select{border-radius:7px}p{color:var(--muted);line-height:1.65}.topbar{border-bottom:1px solid var(--line);background:#171b1d;justify-content:space-between;align-items:center;gap:25px;height:76px;padding:0 28px;display:flex}.brand{color:#f1e9db;letter-spacing:-1px;align-items:center;gap:10px;font-family:Manrope,sans-serif;font-size:21px;font-weight:800;display:flex}.brand>span:last-child{letter-spacing:2px;color:var(--muted);margin-left:-3px;font-size:17px;font-weight:400}.brand-mark{width:34px;height:34px;color:var(--amber);border:1px solid #786248;border-radius:10px;place-items:center;display:grid}nav{align-self:stretch;gap:30px;display:flex}nav button{color:var(--muted);border:0;border-radius:0;align-items:center;gap:8px;padding:0 5px;display:flex;position:relative}nav button.active{color:var(--amber)}nav button.active:after{content:"";background:var(--amber);height:2px;position:absolute;bottom:0;left:0;right:0}nav small{border:1px solid #455052;border-radius:4px;padding:2px 4px;font-size:11px}.header-end{align-items:center;gap:25px;display:flex}.educational{color:#8a9698;font-size:12px}.icon{border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;display:inline-flex}.workspace{grid-template-columns:270px minmax(340px,1fr) 400px;max-width:1900px;min-height:calc(100vh - 76px);margin:auto;display:grid}.sidebar{border-right:1px solid var(--line);background:#191d1f;flex-direction:column;padding:29px 22px 18px;display:flex}.eyebrow{letter-spacing:1.5px;color:#89979b;font-family:DM Sans,sans-serif;font-size:10px;font-weight:600;display:block}.sidebar h1{letter-spacing:-.9px;margin:15px 0 10px;font-family:Manrope,sans-serif;font-size:24px;font-weight:500;line-height:1.4}.intro{margin:0 0 26px;font-size:13px}.sidebar section{border-bottom:1px solid var(--line);margin-bottom:23px;padding:0 0 23px}.section-title{justify-content:space-between;margin-bottom:14px;font-size:14px;font-weight:600;display:flex}.section-title>span{color:#667578;font-size:11px}.select-wrap{position:relative}.select-wrap>svg{pointer-events:none;color:var(--muted);position:absolute;top:14px;right:10px}select{color:#d5ddda;background:#202629;border:1px solid #384145;max-width:100%;padding:10px 28px 10px 10px;font-size:12px}.select-wrap select{appearance:none;width:100%;height:42px}.electrode-heading{color:var(--muted);justify-content:space-between;align-items:center;margin:17px 0 9px;font-size:12px;display:flex}.text-button{color:var(--amber);border:0;align-items:center;gap:5px;padding:2px;font-size:12px;display:inline-flex}.electrode-list{flex-direction:column;gap:5px;max-height:230px;display:flex;overflow:auto}.electrode{text-align:left;background:#1e2426;border-color:#0000;align-items:center;gap:9px;min-height:41px;padding:11px 10px;display:flex}.electrode.selected{background:#2d2b26;border-color:#8b7253}.electrode i{border-radius:50%;width:7px;height:7px}.electrode b{min-width:23px;font-size:12px}.electrode span{color:var(--muted);flex:1;font-size:11px}.electrode>svg{color:var(--amber)}.electrode-actions{gap:7px;margin-top:12px;display:flex}.electrode-actions>.primary{color:#edc496;background:#272722;border-color:#5a4e3d;flex:1;justify-content:center;align-items:center;gap:6px;padding:10px 7px;font-size:11px;display:flex}.electrode-actions>.icon{height:auto}.primary.active{color:#ffe3b6;background:#674b2a}.small-link{color:#a9b2ae;border:0;align-items:center;gap:5px;padding:12px 0 0;font-size:11px;display:flex}.condition-grid{grid-template-columns:1fr 1fr;gap:6px;display:grid}.condition-grid button{background:#202628;border:1px solid #303a3c;padding:10px 4px;font-size:11px}.condition-grid button:first-child{grid-column:1/-1}.condition-grid button.selected{color:#a5e3d6;background:#223733;border-color:#497e71}.range-label{color:#bbc5c4;justify-content:space-between;align-items:center;margin:24px 0 12px;font-size:12px;display:flex}.range-label output{color:#f0e6d9;font-variant-numeric:tabular-nums;font-size:20px}.range-label small{color:var(--muted);font-size:11px}input[type=range]{width:100%;accent-color:var(--amber);cursor:pointer;height:4px}.range-ends{color:#78878b;justify-content:space-between;margin-top:7px;font-size:10px;display:flex}.advanced-toggle{text-align:left;border:0;align-items:center;gap:8px;padding:0;font-size:12px;display:flex}.advanced-toggle svg:last-child{margin-left:auto}.advanced{flex-direction:column;gap:12px;padding-top:18px;display:flex}.advanced>label{color:#b2bdbb;justify-content:space-between;align-items:center;font-size:12px;display:flex}.advanced select{width:120px}.advanced .checkbox{justify-content:flex-start;gap:6px;font-size:11px}.sidebar-bottom{margin-top:auto;padding-top:36px}.sidebar-bottom p{margin:7px 0;font-size:10px}.main-surface{background:radial-gradient(at 48% 44%,#263036 0%,#1c2327 45%,#141a1e 100%);flex-direction:column;min-width:0;display:flex;position:relative}.scene-panel{flex:1;min-height:560px;position:relative;overflow:hidden}.scene-top{z-index:2;pointer-events:none;justify-content:space-between;align-items:flex-start;gap:12px;display:flex;position:absolute;top:25px;left:25px;right:25px}.scene-top>*{pointer-events:auto}.scene-top .eyebrow{letter-spacing:1.3px;font-size:9px}.scene-title{letter-spacing:-.3px;color:#d8dcd8;margin-top:10px;font-family:Manrope,sans-serif;font-size:17px}.scene-title span{color:var(--muted);border:1px solid #435050;border-radius:3px;margin-left:5px;padding:2px 4px;font:9px DM Sans,sans-serif}.view-chip{color:#bccbc8;background:#202a2cba;border-color:#425151;align-items:center;gap:5px;padding:8px;font-size:10px;display:flex}.view-chip.active{color:#bad8c9}.anatomy-canvas{touch-action:none;position:absolute;inset:0}.anatomy-canvas>canvas{width:100%;height:100%;display:block}.loading{z-index:4;color:#c8bb9e;background:#1b2328e0;flex-direction:column;justify-content:center;align-items:center;gap:20px;font-size:13px;display:flex;position:absolute;inset:0}.loading-orbit{border:1px solid #485252;border-top:1px solid var(--amber);border-radius:50%;width:40px;height:40px;animation:1.5s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.failed .loading-orbit{display:none}.body-side-label{letter-spacing:1.2px;color:#60747c;pointer-events:none;justify-content:center;align-items:center;gap:55px;font-size:8px;display:flex;position:absolute;bottom:64px;left:0;right:0}.body-side-label span{color:#8c9e9f}.scene-tools{flex-direction:column;align-items:flex-end;gap:7px;display:flex;position:absolute;bottom:104px;right:20px}.scene-tools button{color:#b5c1c3;background:#20292ee6;border-color:#425056;align-items:center;gap:7px;padding:9px 11px;font-size:11px;display:flex}.scene-tools .icon{padding:0}.scene-tools .active{color:var(--amber);border-color:#aa8659}.scene-bottom{background:#182024aa;border-top:1px solid #344045;justify-content:space-between;align-items:center;padding:17px 24px;display:flex;position:absolute;bottom:0;left:0;right:0}.scene-bottom span{letter-spacing:1px;color:#9cabac;align-items:center;gap:6px;font-size:9px;display:flex}.scene-bottom span:last-child{letter-spacing:0;color:#819295;font-size:10px}.live-dot,.paused-dot{background:#8cc1a7;border-radius:50%;width:5px;height:5px;display:inline-block}.paused-dot{background:var(--amber)}.conduction-bar{background:#1b2429;border-top:1px solid #354145;border-bottom:1px solid #354145;align-items:center;gap:15px;min-height:97px;padding:18px 25px;display:flex}.conduction-icon{color:var(--amber);background:#302f29;border:1px solid #514b40;border-radius:10px;flex-shrink:0;place-items:center;width:43px;height:43px;display:grid}.conduction-bar strong{margin-top:8px;font-size:12px;font-weight:500;line-height:1.5;display:block}.conduction-bar .eyebrow{font-size:8px}.phase-chips{gap:5px;margin-left:auto;display:flex}.phase-chips span{color:#8e9a9c;border:1px solid #3b494c;border-radius:4px;place-items:center;min-width:26px;height:27px;padding:0 5px;font:10px monospace;display:grid}.phase-chips .active{color:var(--amber);background:#4a3e2c;border-color:#98784b}.playback{background:#1a2226;align-items:center;gap:17px;height:88px;padding:21px 25px;display:flex}.play{color:#f0c592;background:#302c25;border-color:#65563f;border-radius:50%;flex-shrink:0;place-items:center;width:36px;height:36px;display:grid}.scrub{flex:1}.scrub label{color:#a4b0b1;justify-content:space-between;margin-bottom:9px;font-size:10px;display:flex}.scrub label span{font-variant-numeric:tabular-nums}.playback select{background:0 0;padding:6px;font-size:10px}.signals-panel{border-left:1px solid var(--line);background:#161d20;flex-direction:column;min-width:0;padding:29px 24px 20px;display:flex}.signal-heading>div{justify-content:space-between;align-items:center;gap:15px;display:flex}.signal-heading h2{letter-spacing:-.6px;margin:14px 0 7px;font:500 20px/1.4 Manrope,sans-serif}.signal-heading svg{color:var(--amber);flex-shrink:0}.signal-heading p{margin:0 0 22px;font-size:11px}.trace-controls{justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px;display:flex}.trace-controls button{color:#c6ceca;background:#222a2d;align-items:center;gap:6px;padding:8px 10px;font-size:11px;display:flex}.trace-controls select{max-width:120px;padding:7px;font-size:11px}.comparison-note{color:#b8b5e1;justify-content:space-between;align-items:center;padding:0 5px 8px;font-size:11px;display:flex}.comparison-note .icon{border:0;width:23px;height:23px}.traces{scrollbar-width:thin;scrollbar-color:#546360 #192124;min-height:153px;max-height:435px;overflow:auto}.trace-canvas{width:100%;display:block}.scale-note{border-bottom:1px solid var(--line);color:#788d94;justify-content:space-between;margin-bottom:22px;padding:14px 0 20px;font-size:10px;display:flex}.insight{background:linear-gradient(130deg,#2a302b,#202827);border:1px solid #495044;border-radius:10px;padding:19px 17px}.insight .eyebrow{color:#b5c3a6;letter-spacing:1px;font-size:9px}.insight h3{color:#d6e0cb;margin:11px 0 8px;font-size:15px;font-weight:500;line-height:1.45}.insight p{color:#a6b4a9;margin:0;font-size:12px;line-height:1.75}.insight.warning{background:#302b23;border-color:#86673e}.insight.warning .eyebrow,.insight.warning h3{color:var(--amber)}.condition-note{margin-top:25px}.condition-note .eyebrow{color:#abb8bd;letter-spacing:1px;font-size:10px}.condition-note p{margin:10px 0;font-size:12px;line-height:1.8}.condition-note small{color:#ae9980;font-size:11px;line-height:1.7;display:block}.status-note{color:#9db5b3;border-left:2px solid #657c74;margin:20px 0 25px;padding-left:12px;font-size:11px}.source-button{border:0;border-top:1px solid var(--line);color:#91a5ac;border-radius:0;justify-content:space-between;align-items:center;margin-top:auto;padding:18px 0 0;font-size:11px;display:flex}.signal-loading{color:var(--muted);padding:30px}.library-panel{max-height:calc(100vh - 76px);padding:30px;overflow:auto}.library-panel h1{letter-spacing:-1px;font:500 28px/1.4 Manrope,sans-serif}.library-panel>p{font-size:14px}.library-cards{grid-template-columns:1fr 1fr;gap:10px;margin:24px 0;display:grid}.library-cards button{text-align:left;background:#20292d;flex-direction:column;align-items:flex-start;gap:9px;padding:17px;display:flex}.library-cards button.selected{background:#31312b;border-color:#bda47c}.library-cards b{font-size:13px}.library-cards span,.library-cards small{color:var(--muted);font-size:11px}.library-cards svg{color:var(--amber)}.source-description{background:#20292c;border:1px solid #3a494d;border-radius:8px;padding:18px;font-size:12px}.source-description a{align-items:center;gap:7px;display:flex}.source-description code{color:#8eaaa9;margin-top:12px;display:block}.library-traces{margin-top:20px}.modal-backdrop{z-index:50;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#060b0ddd;place-items:center;padding:25px;display:grid;position:fixed;inset:0}.modal{background:#20272a;border:1px solid #48534f;border-radius:16px;width:min(690px,100%);max-height:90vh;padding:35px;position:relative;overflow:auto;box-shadow:0 20px 90px #0008}.modal h2{letter-spacing:-1px;font:500 28px Manrope,sans-serif}.modal p{font-size:14px}.modal .close{position:absolute;top:15px;right:15px}.source-links{flex-direction:column;gap:12px;margin:25px 0;font-size:12px;display:flex}.source-links a{align-items:center;gap:5px;display:flex}.modal small{color:#819393;font-size:12px;line-height:1.7}.app{min-height:100vh}@media (width>=1550px){.workspace{grid-template-columns:285px minmax(400px,1fr) 440px}.scene-panel{min-height:660px}.signals-panel{padding:32px}.traces{max-height:520px}.sidebar{padding:32px 25px}.sidebar h1{font-size:27px}.insight p,.condition-note p{font-size:13px}}@media (width<=1150px){.workspace{grid-template-columns:235px minmax(300px,1fr) 330px}.sidebar{padding:24px 15px}.signals-panel{padding:24px 17px}.sidebar h1{font-size:22px}.scene-top{left:18px;right:18px}.scene-title{font-size:15px}.scene-top .eyebrow{font-size:8px}.view-chip{padding:6px;font-size:9px}.conduction-bar{gap:10px;padding:16px}.phase-chips{display:none}.body-side-label{gap:25px}.header-end .educational{display:none}.signal-heading h2{font-size:18px}}@media (width<=920px){.workspace{grid-template-columns:235px 1fr}.signals-panel{border-top:1px solid var(--line);grid-column:1/-1;grid-template-columns:1fr 1fr;gap:0 25px;display:grid}.signal-heading,.trace-controls,.traces,.scale-note,.comparison-note{grid-column:1}.insight,.condition-note,.status-note,.source-button{grid-column:2}.insight{grid-row:1/4}.condition-note{grid-row:4/6}.status-note{grid-row:6}.source-button{grid-row:7}.scene-panel{min-height:640px}.traces{max-height:420px}.library-panel{max-height:900px}.sidebar-bottom{padding-top:25px}.modal-backdrop{padding:15px}}@media (width<=620px){.topbar{gap:14px;height:65px;padding:0 16px}.brand{gap:6px;font-size:17px}.brand>span:last-child{font-size:13px}.brand-mark{width:29px;height:29px}nav{gap:12px}nav button{font-size:11px}nav small,nav svg,.header-end{display:none}.workspace{flex-direction:column;display:flex}.sidebar{border-right:0;order:2;grid-template-columns:1fr 1fr;gap:15px;padding:24px;display:grid}.sidebar>.eyebrow,.sidebar>h1,.sidebar>.intro{display:none}.sidebar section{border-bottom:0;min-width:0;margin:0}.sidebar-bottom{grid-column:1/-1;padding-top:5px}.advanced,.advanced-toggle{grid-column:1/-1}.main-surface{order:1}.scene-panel{flex:auto;height:580px;min-height:580px}.scene-top{top:20px}.scene-title{font-size:16px}.scene-bottom{padding:14px 18px}.scene-bottom span{font-size:8px}.scene-bottom span:last-child{font-size:9px}.conduction-bar{min-height:82px}.playback{height:73px;padding:17px}.signals-panel{border-left:0;order:3;padding:25px;display:flex}.traces{max-height:440px}.condition-grid button,.electrode-actions .primary{font-size:10px}.small-link{text-align:left;font-size:10px}.electrode-list{max-height:180px}.electrode span{font-size:9px}.select-wrap select{font-size:10px}.library-panel{max-height:none;padding:24px}.library-panel h1{font-size:25px}.library-traces{max-height:500px;overflow:auto}.modal{padding:30px 23px}.modal h2{font-size:25px}.modal p{font-size:13px}}.renderer-mount{position:absolute;inset:0}.renderer-mount canvas{width:100%;height:100%;display:block}.flow-key{pointer-events:none;color:#b6c9c7;background:#152024bb;border:1px solid #3c4b4d;border-radius:8px;flex-direction:column;gap:8px;max-width:180px;padding:12px;font-size:11px;display:flex;position:absolute;top:96px;left:24px}.flow-key span{align-items:center;gap:7px;display:flex}.flow-key i{border-radius:50%;flex-shrink:0;width:7px;height:7px}.flow-key .electric{background:#ffd899}.flow-key .oxygenated{background:#ff7862}.flow-key .deoxygenated{background:#70c5ff}.flow-key small{color:#8ba2a6;margin-top:3px;font-size:9px;line-height:1.5}.cycle-story{background:#1b272b;border-top:1px solid #3c4c4e;flex-shrink:0;padding:15px 22px}.cycle-story-heading{justify-content:space-between;align-items:center;gap:10px;margin-bottom:11px;display:flex}.cycle-story-heading strong{color:#e4d5bb;font-size:13px;font-weight:500}.cycle-story-heading>span{color:#edb77a;border:1px solid #756145;border-radius:4px;padding:3px 7px;font:12px monospace}.cycle-steps{grid-template-columns:1fr 1fr 1fr;gap:10px;display:grid}.cycle-steps>div{border-left:2px solid #506169;min-height:63px;padding-left:9px}.cycle-steps b{color:#95aaa9;margin-bottom:6px;font-size:10px;font-weight:500;display:block}.cycle-steps span{color:#a8b9b9;font-size:11px;line-height:1.5;display:block}.cycle-steps>div:first-child{border-color:#edb77a}.cycle-steps .active{border-color:#e6c49b}.cycle-steps .active.blood{border-color:#ff8c79}.cycle-steps .active span{color:#f0dcc4}.cycle-story p{color:#a1b5b5;margin:11px 0 0;font-size:10px;line-height:1.5}.main-surface .conduction-bar{min-height:67px;padding-top:11px;padding-bottom:11px}.main-surface .playback{flex-shrink:0;height:72px;padding-top:13px;padding-bottom:13px}@media (width<=1150px){.flow-key{max-width:145px;padding:9px;font-size:9px;top:90px;left:15px}.cycle-story{padding:12px 15px}.cycle-steps{gap:6px}.cycle-steps span{font-size:10px}.cycle-story-heading strong{font-size:12px}}@media (width<=620px){.flow-key{max-width:140px;font-size:9px;top:83px;left:12px}.scene-tools{bottom:92px;right:12px}.scene-tools button{font-size:10px}.cycle-story{padding:15px}.cycle-steps>div{min-height:84px}.cycle-steps span,.cycle-story p{font-size:11px}}.visibility{background:#292a25;border:1px solid #4d4840;border-radius:6px;flex-direction:column;gap:6px;margin:12px 0;padding:12px;display:flex}.visibility b{color:var(--amber);font-size:14px;font-weight:500}.visibility span{color:#a3afa8;font-size:11px;line-height:1.6}.compare-normal{color:#c2bddf;border-color:#514c66;align-items:center;gap:7px;margin:12px 0;padding:8px 10px;font-size:11px;display:flex}@media (width>=921px){.workspace{height:calc(100dvh - 76px);min-height:0}.sidebar,.signals-panel{scrollbar-width:thin;scrollbar-color:#495956 transparent;overflow-y:auto}.main-surface,.scene-panel{min-height:0}.traces,.signal-heading,.trace-controls,.scale-note,.insight,.condition-note,.source-button,.status-note{flex-shrink:0}.scene-bottom{background:#182024e8}}@media (prefers-reduced-motion:reduce){*{transition:none!important}.loading-orbit{animation:none}}.teaching-panel{background:#202c2f;border:1px solid #3c4c4e;border-radius:12px;flex-shrink:0;margin:14px 0;padding:20px}.teaching-panel h3{margin:9px 0;font-size:18px;line-height:1.4}.teaching-provenance{color:#edb77a;font-size:11px;line-height:1.5;display:block}.teaching-panel svg{width:100%;margin:16px 0 8px}.teaching-panel svg text{fill:#b5c8c7;font:10px system-ui}.teaching-now{border-left:2px solid #edb77a;gap:5px;min-height:62px;padding-left:10px;font-size:12px;display:grid}.teaching-now b{color:#edb77a}.teaching-actions{flex-wrap:wrap;gap:8px;margin:14px 0;display:flex}.teaching-actions button{padding:8px;font-size:11px}.teaching-panel ol{padding-left:19px;font-size:13px}.teaching-panel li{margin:14px 0;padding-left:4px}.teaching-panel p{color:#b6c3c3;margin:6px 0;font-size:12px;line-height:1.7}.teaching-panel summary{cursor:pointer;color:#83d5c7;font-size:12px}.teaching-panel a{color:#83d5c7;font-size:12px}.teaching-caution,.teaching-panel .teaching-caution{color:#8da3a6;font-size:10px;line-height:1.6}.public-notice{background:#202e2e;border-bottom:1px solid #3b504b;justify-content:space-between;align-items:center;gap:14px;min-height:70px;padding:12px 28px;display:flex}@media (width>=921px){.workspace{grid-template-columns:230px minmax(250px,.72fr) minmax(430px,1.28fr)}.signals-panel{padding:24px}.traces{max-height:min(55vh,620px)}}.signal-heading .eyebrow{color:#b8d9c5}.signal-heading h2{font-size:24px}.explain-cta{color:#a7cbbb;background:0 0;border:0;padding:7px 0}.condition-note{border-top:1px solid var(--line);padding-top:14px}.heartbeat-dialog{color:#e6efeb;background:#182325;border:1px solid #536962;border-radius:16px;width:min(1240px,100vw - 40px);max-height:90dvh;padding:28px;overflow:auto}.heartbeat-dialog::backdrop{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#060d11d9}.heartbeat-dialog h2{margin:10px 70px 10px 0;font-size:26px}.heartbeat-dialog p{color:#b7c8c2;font-size:13px;line-height:1.65}.lesson-close{float:right;z-index:2;background:#31443d;padding:8px 12px;position:sticky;top:0}.lesson-topic{gap:8px;margin:20px 0 12px;display:flex}.lesson-topic button{padding:10px 16px}.lesson-topic button[aria-pressed=true]{color:#162820;background:#cde6d3}.lesson-transport{border-bottom:1px solid #3d514a;flex-wrap:wrap;align-items:center;gap:12px;padding:12px 0 18px;display:flex}.lesson-transport button{padding:8px 12px}.lesson-transport label,.lesson-transport span{color:#b7c8c2;font-size:12px}.lesson-transport select{width:auto;margin-left:8px}.lesson-layout{grid-template-columns:1fr 1.12fr;align-items:start;gap:24px;display:grid}.lesson-layout .teaching-panel{margin:16px 0 0}.lesson-ecg{min-width:0;padding-top:16px;position:sticky;top:45px}.lesson-ecg .trace-canvas{width:100%}.lesson-mechanics{background:#233431;border-left:2px solid #edb77a;padding:12px}.circulation-lesson{padding:16px 0}.circulation-lesson svg{width:100%}.circulation-lesson svg text{fill:#e1eeea;font:14px system-ui}.circulation-routes{grid-template-columns:1fr 1fr;gap:14px;display:grid}.circulation-routes div{gap:5px;font-size:12px;display:grid}.circulation-routes span{color:#a9bfb6}.circulation-lesson details{margin:16px 0;font-size:13px}.circulation-lesson a{color:#cde6d3;font-size:12px}@media (width<=920px){.workspace{flex-direction:column;display:flex}.signals-panel{order:0;width:100%;padding:20px;display:flex}.main-surface{order:1}.sidebar{order:2}.scene-panel{height:380px;min-height:380px}.traces{max-height:440px}.heartbeat-dialog{width:calc(100vw - 20px);padding:18px}.lesson-layout{grid-template-columns:1fr}.lesson-ecg{position:static}}.public-notice strong{color:#e1ebe5;font-size:14px;display:block}.public-notice span{color:#b1c7bd;margin-top:5px;font-size:11px;line-height:1.5;display:block}.public-actions{flex-wrap:wrap;gap:8px;display:flex}.public-actions button,.explain-cta{padding:9px 12px;font-size:12px}button.start-lesson{color:#162820;background:#cde6d3;border-color:#cde6d3;font-weight:600}.signal-provenance{color:#edb77a;background:#292d29;border-left:2px solid #edb77a;margin:12px 0;padding:8px 10px;font-size:11px;line-height:1.5}.signal-heading .lesson-preview{color:#c0ceca;margin:10px 0;font-size:12px;line-height:1.6}.explain-cta{margin-bottom:12px}@media (width>=921px){.workspace{height:calc(100dvh - 146px)}}@media (width<=920px){.public-notice{flex-wrap:wrap;padding:12px 18px}.teaching-panel{grid-column:1/-1}}@media (width<=620px){.public-notice{gap:10px}.public-notice strong{font-size:13px}.public-actions button{padding:8px 10px;font-size:11px}.public-notice span{font-size:10px}}