@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{font-family:'DM Sans',sans-serif;color:#203735;background:#f4f7f6;font-synthesis:none;--green:#145e50;--mint:#bff7d9;--line:#dce5e1;--muted:#677d77}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #ca810c;outline-offset:4px}button{border:0;background:none;color:inherit}header{height:104px;padding:0 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;background:#fff;border-bottom:1px solid var(--line)}a{color:var(--green)}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;font-size:20px;font-weight:800;letter-spacing:2px}.brand-mark{display:grid;place-items:center;background:#164b40;color:#c6f7da;width:48px;height:48px;border-radius:14px;font-size:28px;letter-spacing:-3px}.brand small{display:block;font-size:10px;letter-spacing:1.6px;color:var(--muted);margin-top:6px}nav{display:flex;gap:8px}nav button{font-size:14px;padding:13px 18px;border-radius:8px}nav button.active{background:#eaf3ef;color:#0f5b49;font-weight:700}.edition{font-size:11px;letter-spacing:1.7px}.edition span{display:block;color:var(--muted);margin-top:7px;font-size:10px}main{display:grid;grid-template-columns:260px minmax(450px,1fr) 270px;max-width:1700px;margin:auto}.library{padding:32px 22px;border-right:1px solid var(--line);background:#f9fbfa}.section-title,.eyebrow{font-size:11px;font-weight:700;letter-spacing:1.7px;color:var(--green)}.section-title{display:flex;justify-content:space-between;align-items:center}.section-title span{background:#e4eee9;padding:4px 7px;border-radius:5px;letter-spacing:0}h1,h2,h3{font-family:Manrope,sans-serif}h1{font-weight:800;font-size:32px;line-height:1.2;letter-spacing:-1.4px;margin:22px 0 14px}.muted{color:var(--muted);font-size:14px;line-height:1.7}.search{background:#fff;border:1px solid var(--line);display:flex;align-items:center;padding:10px;border-radius:8px;margin-top:24px;gap:8px}.search span{font-size:22px;line-height:20px}.search input{width:100%;border:0;background:transparent;min-width:0;font-size:14px;outline:none}.filters{display:flex;flex-wrap:wrap;gap:5px;margin:16px 0 24px}.filters button{font-size:12px;padding:7px 10px;border:1px solid var(--line);border-radius:20px}.filters button.active{background:#245c4f;color:#fff;border-color:#245c4f}.procedure-item{display:flex;width:100%;align-items:center;gap:10px;text-align:left;margin:6px 0;padding:12px 10px;border-radius:9px;position:relative}.procedure-item:hover{background:#edf3f0}.procedure-item.selected{background:#deeee5;color:#144e3d}.procedure-item.selected:before{position:absolute;left:-22px;top:12px;bottom:12px;width:3px;content:'';background:var(--green)}.item-icon{width:32px;height:32px;display:grid;place-items:center;border-radius:9px;background:#e9efec;font-size:18px;flex-shrink:0}.procedure-item.selected .item-icon{background:#c5dfd0}.procedure-item b{font-size:13px;font-weight:600;display:block}.procedure-item small{font-size:11px;color:var(--muted);display:block;margin-top:4px}.library-note{font-size:12px;line-height:1.6;color:#74877f;margin-top:32px}.workspace{padding:32px 30px}.work-heading{display:flex;justify-content:space-between;align-items:center;gap:15px}.work-heading h2{font-size:29px;letter-spacing:-1.2px;margin:8px 0 0}.pill{font-size:11px;white-space:nowrap;border:1px solid #bfcfc8;border-radius:24px;padding:8px 11px;color:#49695d}.intro{font-size:14px;line-height:1.7;color:#677d77;margin:14px 0 22px;max-width:600px}.simulation{background:#102d2b;border:1px solid #234f48;border-radius:16px;overflow:hidden;color:#c2ddd2;box-shadow:0 10px 24px #163d3710}.viewport-top,.viewport-bottom{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:17px 20px;font-size:10px;letter-spacing:1.4px}.viewport-top{border-bottom:1px solid #234640}.viewport-top i{display:inline-block;width:6px;height:6px;background:#b6f2cc;border-radius:50%;margin-right:6px}.viewport-top span:last-child{color:#87aaa0}.viewport-bottom{color:#90b4a8;font-size:9px;letter-spacing:.9px;min-height:44px}.viewport-bottom span:first-child{font-size:11px;letter-spacing:0;color:#c9e8dc}#diagram{aspect-ratio:1.45;max-height:440px;background-image:linear-gradient(#c9ffdf05 1px,transparent 1px),linear-gradient(90deg,#c9ffdf05 1px,transparent 1px);background-size:28px 28px}#diagram svg{width:100%;height:100%;overflow:visible}.transport{display:flex;align-items:center;gap:10px;margin:20px 0}.transport button{border:1px solid #d7e2dc;border-radius:8px;padding:11px 14px;font-size:13px;white-space:nowrap}.transport button.primary{background:var(--green);color:#fff;border-color:var(--green)}.transport label{font-size:12px;color:var(--muted);margin-left:auto;white-space:nowrap}.transport select{border:0;background:#e7eeea;padding:8px;border-radius:6px;color:#234f40;font-size:13px}#stepCounter{font-size:11px;color:var(--muted);white-space:nowrap}.scrubber-label{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}input[type=range]{width:100%;accent-color:#1e7259;margin:12px 0 15px}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:6px}.steps button{font-size:11px;text-align:left;line-height:1.4;padding:0 3px;color:#74877d}.steps 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label{display:flex;align-items:center;gap:5px}.page-heading{max-width:1100px;margin:45px auto 30px;padding:0 30px}.page-heading h1{font-size:42px}.page-heading p{color:var(--muted);line-height:1.8;max-width:650px}.suite-layout{display:grid;grid-template-columns:2fr 1fr;max-width:1100px;padding:0 30px 70px;margin:auto;gap:25px}.suite-plan{background:#102d2b;border-radius:16px;color:#c5e9d7;overflow:hidden}.plan-label{padding:20px;font-size:10px;letter-spacing:1.5px}#roomDiagram svg{width:100%;display:block}.plan-key{display:flex;gap:18px;padding:20px;font-size:11px}.suite-detail{background:#fff;border:1px solid var(--line);padding:28px;border-radius:12px}.suite-detail h2{font-size:24px;letter-spacing:-.7px}.suite-detail p{color:var(--muted);line-height:1.8;font-size:15px}.stations{display:flex;flex-wrap:wrap;gap:7px}.stations button{border:1px solid var(--line);padding:10px;border-radius:6px;font-size:12px}.stations button.active{background:var(--green);color:#fff}.reference-grid{max-width:1100px;padding:0 30px 60px;margin:auto;display:grid;grid-template-columns:1fr 1fr;gap:30px}.reference-grid article{background:#fff;padding:30px;border:1px solid var(--line);border-radius:12px}.reference-grid h2{font-size:22px}.reference-grid h3{font-size:16px;margin-top:30px}.reference-grid p{font-size:15px;line-height:1.9;color:var(--muted)}#referenceLinks a{display:block;font-size:14px;line-height:1.5;margin:14px 0}.flow{stroke-dasharray:3 20;animation:flow 2s linear infinite}.ambient{animation:breathe 3s ease-in-out infinite}.no-motion .flow,.no-motion .ambient{animation:none}@keyframes flow{to{stroke-dashoffset:-92}}@keyframes breathe{50%{opacity:.45}}[hidden]{display:none!important}@media(min-width:1450px){main{grid-template-columns:290px minmax(450px,1fr) 300px}.workspace{padding:36px 42px}.inspector{padding:36px 28px}.library{padding:36px 28px}.procedure-item.selected:before{left:-28px}}@media(max-width:1150px){header{padding:0 22px}.edition{display:none}main{grid-template-columns:230px minmax(400px,1fr)}.inspector{grid-column:2;display:grid;grid-template-columns:1fr 1fr;gap:8px 25px;border-top:1px solid var(--line)}.inspector>.section-title{grid-column:1/-1}.inspector h3{margin-top:14px}.checkpoint{grid-column:2;grid-row:2/7;margin-top:0}.takeaway{grid-column:1/-1}.workspace{padding:28px 22px}.library{grid-row:1/3}.inspector>a{grid-column:1/-1}}@media(max-width:760px){header{height:auto;flex-wrap:wrap;padding:20px;gap:18px}.brand small{font-size:9px}nav{width:100%;justify-content:space-between;gap:0}nav button{font-size:12px;padding:10px 12px}main{display:block}.library{padding:22px 20px;border-right:0;border-bottom:1px solid var(--line)}.library h1{font-size:25px;display:inline-block;margin:15px 0}.library h1 br{display:none}.library>.muted,.library-note{display:none}.search{margin-top:8px}.filters{margin:12px 0}#procedureList{display:flex;overflow-x:auto;gap:8px;padding-bottom:8px}.procedure-item{min-width:180px;max-width:220px;margin:0;border:1px solid var(--line);padding:10px}.procedure-item.selected:before{display:none}.workspace{padding:25px 18px}.work-heading{align-items:flex-start}.work-heading h2{font-size:25px}.pill{font-size:10px;max-width:110px;white-space:normal;text-align:center}.transport{gap:7px}.transport button{font-size:12px;padding:10px}.transport label{font-size:0}.transport select{font-size:12px}#stepCounter{display:none}.viewport-top{font-size:8px;padding:14px}.viewport-bottom{padding:12px;font-size:8px}.viewport-bottom span:last-child{display:none}.inspector{display:block;padding:25px 22px}.checkpoint{margin-top:25px}.suite-layout,.reference-grid{grid-template-columns:1fr;padding:0 18px 40px}.page-heading{padding:0 22px}.page-heading h1{font-size:32px}.suite-detail{padding:23px}footer{flex-wrap:wrap;padding:22px;gap:16px}footer>span:nth-child(2){display:none}}@media(prefers-reduced-motion:reduce){.flow,.ambient{animation:none}} 
/* Comfortable reading sizes for the learning interface. */
.intro,.lesson p{font-size:16px}.procedure-item b,.inspector p,.tool,.checkpoint button,.checkpoint #feedback,.inspector>a,.transport button,nav button{font-size:14px}.filters button,.steps button{font-size:12px}.suite-detail p{font-size:16px}
/* Imaging workstation: high-contrast chrome, full radiographic field. */
:root{--green:#8ddcc4;--line:#263636;--muted:#9bacad;background:#101819;color:#e2e9e8}header,footer,.inspector{background:#121e20}header{height:88px}.brand{color:#dcece7}.brand-mark{background:#4b8f7d;color:#f0fff8}.brand small{color:#8da7a0}nav button.active{background:#24443d;color:#caf5e6}.library{background:#142021}.search{background:#1a2b2c;border-color:#334846}.search input{color:#e6eeeb}.filters button{color:#b6c9c1}.filters button.active{background:#477b69;border-color:#6a9c84;color:#fff}.section-title span{background:#2d4840;color:#d4ede0}.procedure-item:hover{background:#253a35}.procedure-item.selected{background:#2b4a40;color:#dcfff0}.item-icon{background:#253b35;color:#a5cbb5}.procedure-item.selected .item-icon{background:#41664f}.work-heading h2{font-size:27px}.intro{color:#a5b6b3}.pill{border-color:#52665c;color:#c3d5cb}.workspace{padding:27px 26px}.simulation{background:#030505;border-color:#354441;border-radius:5px;box-shadow:0 18px 45px #0004}.viewport-top{padding:10px 15px;background:#101b1c;border-color:#31413d}.viewport-bottom{padding:9px 15px;background:#101b1c;min-height:34px}.viewport-top span:last-child{font-size:9px}#diagram{aspect-ratio:1;max-height:none;background:#151515;position:relative;overflow:hidden}#radiologyCanvas{display:block;width:100%;height:100%;object-fit:contain}.imaging-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:#1a2929;padding:10px;margin:0 0 9px;border:1px solid #344540;border-radius:5px;font-size:12px}.imaging-toolbar button,.imaging-toolbar select{background:#263d36;color:#d4e7de;border:1px solid #496054;border-radius:4px;padding:7px 10px;font-size:12px}.mode-toggle{display:flex}.mode-toggle button{border-radius:0}.mode-toggle button.active{background:#8eceaf;color:#102b1e}.imaging-toolbar label{display:flex;align-items:center;gap:8px;color:#9fb7aa}.imaging-toolbar input[type=range]{width:65px;margin:0}.imaging-toolbar .annotation-control{margin-left:auto}.imaging-toolbar input[type=checkbox]{accent-color:#a8dabb}.transport button{border-color:#496052}.transport button.primary{background:#9bd3b5;color:#142f21;border-color:#9bd3b5}.transport select{background:#30483d;color:#dfede3}.lesson{background:#192b26;border-color:#385343}.lesson p,.inspector p{color:#a6b8af}.lesson>span{color:#8bb39c}.steps button{color:#a5b7ab}.steps button.active{color:#b7e6c7}.steps button:before{background:#3c4d41}.steps button.active:before{background:#aad8b5}.checkpoint{background:#21372d}.checkpoint button{background:#1b2d25;color:#d9e9dc;border-color:#455f4b}.checkpoint button.correct{background:#34573c;border-color:#91bf97}.checkpoint button.wrong{background:#5d4530;border-color:#b3976d}.tool{border-color:#2b4034}.takeaway>span{color:#b1d5b4}.suite-detail,.reference-grid article{background:#1a2d23;border-color:#3a503c}.stations button.active{background:#a5cea7;color:#1f3823}.reference-grid p,.suite-detail p{color:#bacbbd}footer b{color:#bed9c1}.educational{color:#a1b39f}.library-note{color:#a4b59f}.suite-plan{border:1px solid #476047}.transport{margin:15px 0}.intro{margin:12px 0 18px}.section-title,.eyebrow{color:#a5d7b9}.reference-grid a,.inspector>a{color:#bde0bc}@media(min-width:1151px){main{grid-template-columns:250px minmax(450px,1fr) 270px}.library{padding:28px 20px}.library h1{font-size:29px}}@media(max-width:760px){header{height:auto}.workspace{padding:20px 15px}.imaging-toolbar{gap:7px}.annotation-control{display:none!important}.imaging-toolbar label{font-size:11px}.imaging-toolbar button{padding:6px 8px}.work-heading h2{font-size:24px}.library h1{font-size:25px}.intro{font-size:14px}#diagram{aspect-ratio:1}}
#diagram{height:min(58vh,650px);min-height:360px;aspect-ratio:auto}#radiologyCanvas{object-fit:contain}.imaging-toolbar button:disabled{opacity:.4;cursor:not-allowed}@media(max-width:760px){#diagram{height:auto;aspect-ratio:1;min-height:0}#radiologyCanvas{height:auto;width:100%}}