:root{color-scheme:dark;--bg:#0d141d;--panel:#121e2a;--line:#293746;--muted:#92a3b4;--text:#e6eef5;--accent:#7de0d0}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;border:1px solid var(--line);background:transparent;border-radius:7px;padding:8px 14px;cursor:pointer}button:hover{background:#263c49}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}button.active{background:#203d42;border-color:#476e70;color:var(--accent)}button:disabled{opacity:.4;cursor:default}header{height:94px;display:flex;align-items:center;justify-content:space-between;padding:0 30px;border-bottom:1px solid var(--line);background:#101b26}.brand{display:flex;align-items:center;gap:15px}.brandmark{font-size:26px;color:var(--accent);border:1px solid #42635f;padding:1px 9px;border-radius:9px}h1{font-size:23px;margin:0;letter-spacing:2px}h1 span{font-size:12px;letter-spacing:2px;font-weight:400;color:var(--muted);margin-left:12px}.brand p{margin:0;color:var(--muted);font-size:13px}.headernote{font-size:14px;color:#acbdcb}.headernote span{padding:0 16px;color:#526675}main{display:grid;grid-template-columns:230px minmax(300px,1fr) 290px;height:calc(100dvh - 94px);min-height:620px}.left,.right{background:var(--panel);padding:25px 20px;display:flex;flex-direction:column;min-height:0}.left{border-right:1px solid var(--line)}.right{border-left:1px solid var(--line)}.sectiontitle{font-size:14px;font-weight:600;margin-bottom:20px;display:flex;justify-content:space-between;align-items:center}.sectiontitle span{font-size:12px;color:var(--muted);font-weight:400}nav{display:grid;gap:7px}nav button{display:flex;align-items:center;justify-content:space-between;text-align:left;font-size:14px;padding:10px 12px;border-color:transparent}nav small{color:var(--muted);font-size:12px}.listhead{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:20px 0 12px;margin-top:22px;font-size:14px}.listhead span{color:var(--muted);font-size:12px}.bonelist{overflow:auto;flex:1;min-height:100px;scrollbar-width:thin}.bonelist button{display:block;width:100%;text-align:left;border-color:transparent;font-size:14px;padding:7px 10px}.source{font-size:12px;color:var(--muted);padding-top:18px;line-height:1.9}a{color:#a1c7cc;text-decoration:none}.viewport{position:relative;overflow:hidden;background:radial-gradient(ellipse at 50% 38%,#26394a 0%,#152332 42%,#0d1723 90%)}#canvasHost{position:absolute;inset:0}canvas{display:block;touch-action:none;width:100%;height:100%}.viewtitle{position:absolute;top:30px;left:30px;z-index:1;pointer-events:none}.eyebrow{font-size:11px;letter-spacing:2px;color:#90b2c4}.viewtitle h2{font-size:26px;font-weight:500;margin:6px 0 0}.viewtitle p{font-size:13px;color:var(--muted);margin:3px 0}.views{position:absolute;top:30px;right:24px;display:flex;padding:4px;gap:3px;background:#101d2ad9;border:1px solid var(--line);border-radius:9px}.views button{font-size:13px;padding:6px 10px;border:0}.bottom{position:absolute;bottom:22px;left:28px;right:28px;display:flex;align-items:end;justify-content:space-between;gap:20px;pointer-events:none}.explode{pointer-events:auto;min-width:190px;width:240px;padding:15px 20px 10px;background:#142331ee;border:1px solid #354756;border-radius:10px;backdrop-filter:blur(10px)}.explode>div:first-child{display:flex;justify-content:space-between;font-size:14px}.explode output{color:var(--accent);font-size:13px}input[type=range]{width:100%;accent-color:var(--accent);margin:12px 0 0}.rangehint{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.gesture{font-size:12px;color:#a4b4c2;text-align:right;margin:0;line-height:1.9}#loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;background:#101d2af5;z-index:4}#loading[hidden]{display:none}.spinner{width:30px;height:30px;border:2px solid #334a58;border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite;margin:20px}.spinner+p{font-size:14px}#progress{color:var(--muted);font-size:14px}@keyframes spin{to{transform:rotate(360deg)}}#hover{position:absolute;z-index:3;pointer-events:none;background:#0b182bee;border:1px solid #5b8a8b;color:var(--accent);border-radius:5px;padding:5px 12px;font-size:14px}.emptyglyph{font-size:48px;color:#6b909e;margin:32px 0 16px}#details h2{font-size:24px;font-weight:500;line-height:1.4;margin:16px 0 6px}#details p{font-size:14px;color:var(--muted)}.english{font-size:14px;color:var(--muted);word-break:break-word;margin-bottom:26px}.tag{font-size:12px;color:var(--accent);border:1px solid #3c6366;border-radius:4px;padding:3px 7px}.facts{padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:20px 0}.facts>div{display:flex;justify-content:space-between;font-size:14px;padding:6px 0}.facts span{color:var(--muted)}.actions{display:grid;gap:9px}.actions button{font-size:14px}.actions button:first-child{background:var(--accent);color:#102b2a;border-color:var(--accent);font-weight:600}.studyNote{margin-top:auto;padding-top:24px}.studyNote span{font-size:13px;color:#c1cfd9}.studyNote p{font-size:12px;color:var(--muted);line-height:1.9;margin:8px 0 0}@media(max-width:1100px){main{grid-template-columns:190px minmax(270px,1fr) 240px}.left,.right{padding:20px 14px}.gesture{display:none}.viewtitle{left:20px}.views{top:110px;left:20px;right:auto}}@media(max-width:760px){header{height:78px;padding:0 16px}.headernote,h1 span{display:none}h1{font-size:21px}header button{font-size:13px}main{display:flex;flex-direction:column;height:auto;min-height:0}.left{padding:12px 14px;display:block;border-bottom:1px solid var(--line)}.left>.sectiontitle,.listhead,.bonelist,.source{display:none}nav{display:flex;overflow:auto;gap:5px}nav button{white-space:nowrap;padding:6px 11px}nav small{display:none}.viewport{height:65dvh;min-height:460px;order:1}.right{order:2;display:block;border-top:1px solid var(--line);padding:22px}.viewtitle{top:20px}.views{top:22px;left:auto;right:16px}.viewtitle h2{font-size:22px}.eyebrow{display:none}.bottom{bottom:15px;left:16px;right:16px}.explode{width:200px;padding:10px 15px}.studyNote{margin-top:25px}#details .emptyglyph{display:none}#details h2{margin-top:0}.actions{grid-template-columns:1fr 1fr 1fr}.actions button{padding:8px 4px}}@media(prefers-reduced-motion:reduce){.spinner{animation:none}}
.layerbox{padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:20px}.layerbox .sectiontitle{margin-bottom:10px}#layers{display:grid;grid-template-columns:1fr 1fr;gap:7px}.layer{display:flex;align-items:center;gap:7px;font-size:14px;cursor:pointer;padding:6px 4px}.layer input{accent-color:var(--swatch);width:15px;height:15px;margin:0}.layer small{color:var(--muted);font-size:11px;margin-left:auto}.swatch{width:7px;height:7px;border-radius:50%;background:var(--swatch);flex:none}.opacity{margin-top:12px;display:grid;grid-template-columns:1fr 50px;gap:0 12px;font-size:12px;color:var(--muted)}.opacity input{grid-column:1;grid-row:2;margin:3px 0}.opacity output{grid-column:2;grid-row:2;text-align:right}.directory{min-height:0;flex:1;display:flex;flex-direction:column;overflow:auto}.directory .listhead{cursor:pointer;position:sticky;top:0;background:var(--panel);z-index:1;margin-top:12px;padding-top:12px}.directory .bonelist{overflow:visible}.bonelist button{display:flex;gap:8px;align-items:center;line-height:1.45}.bonelist .swatch{width:5px;height:5px}.right{overflow:auto}.layerTag{display:inline-block}.facts b{text-align:right;max-width:65%;font-weight:500}#emptyView{position:absolute;top:45%;left:15%;right:15%;text-align:center;color:var(--muted);pointer-events:none}#emptyView small{font-size:13px}.studyNote{padding-top:20px}.actions+p{line-height:1.8}.source{font-size:11px}.left nav{gap:1px}.left nav button{padding:6px 10px}.left .sectiontitle{margin-bottom:10px}@media(max-width:760px){.left .layerbox{display:block;margin:0 0 10px;padding:0 0 10px}.layerbox .sectiontitle,.regiontitle,.layer small{display:none}#layers{display:flex;justify-content:space-between}.layer{padding:4px 3px}.opacity{display:flex;align-items:center;margin:6px 0 0;gap:10px}.opacity input{width:110px;margin:0}.opacity output{font-size:12px}.directory{display:block;max-height:210px}.directory .listhead{display:flex;margin:10px 0 0;padding:7px 0 0;font-size:13px}.directory .bonelist{display:block;max-height:150px;overflow:auto;padding:8px 0}.directory:not([open]) .bonelist{display:none}.directory summary::before{content:'⌄';margin-right:8px}.directory .listhead b{margin-right:auto}.viewport{height:61dvh}.source{display:none}}
#layers{display:flex;flex-direction:column;gap:3px}.layerRow{display:flex;align-items:center;gap:7px}.layerRow .layer{flex:1;min-width:0}.solo{font-size:12px;padding:3px 8px;color:#bacbd6}.layer small{min-width:26px;text-align:right}.layerRow.pending .layer{opacity:.55}#layerStatus{font-size:12px;line-height:1.5;color:var(--accent);margin:6px 0 0;min-height:0}#layerStatus:empty{display:none}.layerbox{padding-bottom:12px;margin-bottom:14px}.opacity{margin-top:8px}.layoutModes{position:absolute;top:114px;left:20px;display:flex;gap:3px;border:1px solid #354756;border-radius:8px;padding:4px;background:#101d2aee;z-index:2}.layoutModes button{font-size:12px;padding:6px 9px;border:0}.views{top:30px;right:18px;left:auto}.systemLabel{position:absolute;transform:translate(-50%,-100%);font-size:13px;white-space:nowrap;padding:3px 9px;border:1px solid var(--label-color);border-radius:5px;color:var(--label-color);background:#111d2be8;pointer-events:none}.systemLabel[hidden]{display:none}.left{padding-top:18px;padding-bottom:18px}.left nav button{padding:4px 8px}.directory .listhead{margin-top:8px}.directory{flex:1;min-height:50px}.right .actions{grid-template-columns:1fr}.bottom .explode{width:220px}@media(max-width:1100px){.views{top:68px;left:20px;right:auto}.layoutModes{top:115px;left:20px}}@media(max-width:760px){#layers{display:grid;grid-template-columns:1fr 1fr;gap:2px 14px}.layer small{display:none}.layerRow .layer{font-size:13px}.solo{font-size:12px;padding:2px 8px}.opacity{margin-top:7px}.layoutModes{top:74px;left:16px;right:auto}.layoutModes button{font-size:12px;padding:5px 8px}.views{top:23px;left:auto;right:16px}.directory{min-height:0}.viewport{height:62dvh;min-height:480px}.right .actions{grid-template-columns:1fr 1fr 1fr}.left{padding:10px 14px}.left nav button{padding:5px 8px}.systemLabel{font-size:12px}.bottom .explode{width:200px}}
@media(min-width:761px){.left{overflow-y:auto;scrollbar-width:thin}.layerbox,.left nav,.regiontitle,.source{flex-shrink:0}.directory{flex:1 0 130px;min-height:130px;max-height:360px}}

.examEntry{font-size:14px;color:var(--accent);border:1px solid #3d6968;padding:8px 12px;border-radius:7px}#topicBanner{padding:15px;background:#193337;border:1px solid #3d6968;border-radius:8px;margin-bottom:20px}#topicBanner[hidden]{display:none}#topicBanner a{color:var(--accent);font-size:15px}#topicBanner p{font-size:12px;color:#b1c7c9;line-height:1.8}#topicBanner button{font-size:12px;padding:5px 9px}@media(max-width:760px){.examEntry{font-size:12px;padding:6px}.brand{gap:7px}header{gap:8px}header #reset{padding:6px;font-size:12px}}
/* Viewer controls and responsive study navigation */
.studyLinks{display:flex;gap:8px}.srOnly{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}#structureSearch{width:100%;font:inherit;font-size:13px;padding:9px 10px;margin:8px 0;border:1px solid #3b5263;border-radius:6px;background:#0c1824;color:var(--text)}#listEmpty{font-size:12px;color:var(--muted)}#listEmpty[hidden]{display:none}.directory:not([open]) #structureSearch,.directory:not([open]) #listEmpty{display:none}.viewTools{position:absolute;right:20px;bottom:190px;display:flex;gap:6px;z-index:2}.viewTools button{font-size:12px;padding:7px 10px;background:#142331ee;min-height:36px}.gesture{max-width:170px}.viewtitle{max-width:calc(100% - 50px)}.viewtitle h2{font-size:23px;line-height:1.4;max-width:420px}.views{top:116px;right:20px}.layoutModes{top:165px;left:20px}#topicCrumb{position:absolute;top:10px;left:30px;z-index:2;font-size:12px;color:var(--accent)}#topicCrumb[hidden]{display:none}#topicCrumb:not([hidden])~.viewtitle{top:38px}.coverageDetails{font-size:12px;color:var(--muted);margin:10px 0}.coverageDetails summary{cursor:pointer}#topicBanner #topicSummary{font-size:14px;color:#d0e7e3}#ghostControl{display:block;font-size:12px;color:#bbd6d4;margin:12px 0}#ghostControl[hidden]{display:none}#ghostControl input{accent-color:var(--accent)}.left[inert]{opacity:.65}#details .actions button{min-height:40px}@media(min-width:1101px){.views{top:30px}.layoutModes{top:120px}.viewtitle{max-width:calc(100% - 190px)}}@media(max-width:760px){header{height:auto;min-height:78px;flex-wrap:wrap;padding:12px 16px}.studyLinks{order:3;width:100%;justify-content:stretch;overflow:visible;display:flex}.studyLinks a{flex:1;text-align:center;min-height:38px;padding:7px 10px}.viewtitle h2{font-size:20px}.viewtitle{max-width:calc(100% - 32px);left:16px}.views{top:100px;left:16px;right:auto}.layoutModes{top:145px;left:16px}.viewTools{bottom:160px;right:16px}.views button,.layoutModes button{min-height:36px}#topicCrumb{left:16px;top:10px}#topicCrumb:not([hidden])~.viewtitle{top:34px}.directory .bonelist{max-height:140px}.directory{max-height:260px}.viewport{min-height:550px;height:70dvh}.right{padding-top:20px}#structureSearch{margin:9px 0 2px;min-height:40px}.viewTools button{min-height:40px}button.solo{min-height:32px}}
/* Separate controls from the rendered anatomy: three non-overlapping grid rows. */
#viewport.viewport{display:grid;grid-template-rows:auto minmax(280px,1fr) auto;overflow:hidden;min-width:0}.viewerHeader{padding:16px 18px 12px;background:#111f2c;border-bottom:1px solid var(--line);z-index:1;min-width:0}.viewerHeader .viewtitle{position:static;max-width:none;pointer-events:auto}.viewerHeader .viewtitle h2{font-size:22px;margin:3px 0;max-width:none}.viewerHeader .viewtitle p{margin:0;font-size:12px}.viewerHeader .eyebrow{font-size:10px}.viewerToolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:12px}.viewerToolbar .views,.viewerToolbar .layoutModes{position:static;inset:auto;display:flex;width:auto;max-width:100%;margin:0;padding:3px;gap:2px;flex-wrap:wrap;background:#182b3a;border:1px solid #354756;border-radius:7px}.viewerToolbar button{min-height:34px;font-size:12px;padding:5px 9px;white-space:nowrap}.canvasArea{position:relative;min-height:0;min-width:0;overflow:hidden}#canvasHost{position:absolute;inset:0}.canvasArea #systemLabels{position:absolute;inset:0;pointer-events:none}.viewport .bottom{position:static;inset:auto;display:flex;align-items:center;gap:15px;padding:12px 18px;border-top:1px solid var(--line);background:#111f2c;pointer-events:auto}.viewport .bottom .explode{min-width:135px;width:190px;flex:1;max-width:240px;padding:0;border:0;border-radius:0;background:none;backdrop-filter:none}.viewport .bottom .explode>div:first-child{font-size:12px}.viewport .bottom .explode input{margin-top:5px}.footerActions{margin-left:auto;display:flex;flex-direction:column;gap:5px}.viewport .viewTools{position:static;inset:auto;display:flex;flex-wrap:wrap;gap:5px}.viewport .viewTools button{font-size:12px;padding:5px 9px;min-height:32px}.viewport .gesture{font-size:10px;max-width:none;display:block}.viewerHeader #topicCrumb{position:static;font-size:12px;display:inline-block;margin:0 0 5px}.viewerHeader #topicCrumb[hidden]{display:none}#traumaControls{margin-top:12px;border-top:1px solid #3a4c59;padding-top:10px}#traumaControls[hidden],#traumaOptions[hidden]{display:none}.traumaRow{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px}.traumaModes{display:flex;gap:4px}.traumaModes button{font-size:12px;padding:5px 9px;min-height:34px}#traumaVariant{font:inherit;font-size:12px;color:var(--text);background:#1a2d3b;border:1px solid #435868;border-radius:6px;max-width:100%;padding:7px}#traumaOptions{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;font-size:12px;margin-top:9px}#traumaOptions input[type=range]{width:105px;margin:0}#traumaOptions input[type=checkbox]{accent-color:var(--accent)}#traumaValue{color:var(--accent)}#traumaNote{font-size:11px;color:#c5b69f;margin:8px 0 0;line-height:1.7}@media(max-width:1100px){.viewport .gesture{display:none}.viewerHeader{padding:12px 14px}.viewerToolbar{gap:6px}}@media(max-width:760px){#viewport.viewport{height:auto;min-height:0;grid-template-rows:auto minmax(380px,58dvh) auto}.viewerHeader{padding:12px 14px}.viewerToolbar button{min-height:38px}.viewerToolbar{gap:7px}.viewerHeader .viewtitle h2{font-size:21px}.viewport .bottom{padding:12px 14px;gap:8px}.viewport .bottom .explode{width:150px;min-width:120px}.viewport .viewTools button{min-height:38px;padding:5px 7px;font-size:11px}.traumaRow>label{width:100%;display:flex;align-items:center;gap:8px}#traumaVariant{flex:1;min-height:38px}.traumaModes button{min-height:38px}.viewport .gesture{display:none}}
@media(min-width:761px){body>main{min-height:780px}}