:root{font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","Hiragino Sans",sans-serif;color:#e7eeee;background:#10191c;font-size:14px;--muted:#8c9da2;--mint:#88e1c9;--line:#29383c}*{box-sizing:border-box}body{margin:0}button,input,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;color:inherit;border:1px solid var(--line);background:transparent;border-radius:7px;transition:.2s}button:hover{background:#29413f;border-color:#5b9186}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--mint);outline-offset:3px}header{height:78px;display:flex;align-items:center;justify-content:space-between;padding:0 30px;border-bottom:1px solid 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8px}.muted{color:var(--muted)}.intro{font-size:12px;margin-bottom:25px}.search{display:flex;align-items:center;gap:8px;background:#0d171a;border:1px solid var(--line);padding:10px 11px;border-radius:6px}.search span{font-size:23px;color:var(--muted)}input{font:inherit;min-width:0;width:100%;color:#e4eded;background:none;border:0;outline:0;font-size:12px}.section-head{display:flex;align-items:center;justify-content:space-between;color:#a9b9bc;margin:28px 0 12px;font-size:12px}.section-head button{border:0;font-size:11px;color:#77938e}.layer{padding:12px 0;border-bottom:1px solid #233236}.layer-row{display:flex;align-items:center;gap:10px}.swatch{width:10px;height:10px;border-radius:3px}.layer-name{flex:1}.layer-name small{display:block;font-size:10px;color:#799097;margin-top:2px}.switch{position:relative;width:31px;height:18px;appearance:none;background:#344348;border-radius:14px;cursor:pointer;flex:none}.switch:checked{background:#75c6b1}.switch:before{content:"";display:block;width:12px;height:12px;background:#e9f0ec;position:absolute;left:3px;top:3px;border-radius:50%;transition:.2s}.switch:checked:before{left:16px}.opacity-row{display:flex;gap:12px;margin:11px 0 0 20px;align-items:center;font-size:10px;color:var(--muted)}input[type=range]{accent-color:#85cfbc;height:3px;cursor:pointer}.regions{display:grid;grid-template-columns:1fr 1fr;gap:7px}.regions button{padding:9px 3px;font-size:12px}.regions .active,.camera-tools .active{color:var(--mint);background:#243a37;border-color:#416459}.guide{margin:28px 0 20px;padding:17px;background:#1a2c2d;border-left:2px solid #66bba8}.guide>span{font-size:10px;color:var(--mint);letter-spacing:1.5px}.guide p{line-height:1.8;font-size:13px;margin:10px 0}.guide small{color:#829e9e;font-size:10px;line-height:1.8}.source{font-size:10px;color:#879b9e;text-decoration:none}.viewport{position:relative;overflow:hidden;background:radial-gradient(ellipse at 50% 38%,#34464c 0%,#213139 43%,#17262e 80%)}#canvas{position:absolute;inset:0}canvas{display:block;touch-action:none}.view-top{position:absolute;top:28px;left:30px;right:28px;display:flex;justify-content:space-between;z-index:2;pointer-events:none}.view-top h2{font-size:17px;font-weight:400;letter-spacing:1px;margin:8px 0}.view-top .eyebrow{color:#a5bbb9;font-size:10px}#mesh-count{font-size:10px;color:#95a7ad;letter-spacing:1px}.orientation{position:absolute;right:26px;top:40%;display:flex;flex-direction:column;align-items:center;gap:7px;color:#99aeb4;font-size:11px;pointer-events:none}.orientation i{font-size:27px;font-style:normal;font-weight:200;color:#d4e4e1}.camera-tools{position:absolute;bottom:75px;left:50%;transform:translateX(-50%);display:flex;padding:5px;background:#101c23db;border:1px solid #45555a;border-radius:10px;white-space:nowrap;box-shadow:0 8px 25px #0002}.camera-tools button{border:0;font-size:12px;padding:10px 13px}.camera-tools span{width:1px;background:#39474c;margin:8px 5px}.view-bottom{position:absolute;bottom:22px;left:30px;right:26px;display:flex;justify-content:space-between;align-items:center;color:#8fa6ad;font-size:10px;letter-spacing:1.5px}.view-bottom button{border:0;font-size:11px;color:#a5bfbb;padding:7px}.dot{display:inline-block;width:5px;height:5px;background:var(--mint);border-radius:50%;margin-right:7px}.details{padding:30px 25px;border-left:1px solid var(--line);overflow:auto;background:#121d21}.detail-body{padding:26px 0}.detail-icon{font-size:36px;color:#78bdad;margin-bottom:20px}.pill{display:inline-block;background:#263b3a;color:#9dc6bd;padding:5px 9px;border-radius:4px;font-size:10px}.detail-body h2{font-size:23px;line-height:1.5;margin:13px 0 3px;font-weight:500;overflow-wrap:anywhere}.latin{font-size:12px;color:#7e999b;line-height:1.6;overflow-wrap:anywhere}#part-description{line-height:1.95;font-size:13px;color:#aabdc1;margin:20px 0}.primary{display:block;width:100%;padding:12px;background:#88dac4;color:#15332c;font-weight:600;border:0}.primary:hover{background:#a2efda}.action-row{display:flex;gap:8px;margin:9px 0}.action-row button{flex:1;padding:9px 3px;font-size:12px}.text-button{border:0;font-size:11px;color:var(--muted);width:100%;padding:7px}.explain{margin-top:15px;border:1px solid #35534e;background:linear-gradient(135deg,#223d39,#15282a);padding:19px;border-radius:8px}.explain h3{font-size:18px;font-weight:400;margin:13px 0 10px}.explain p{font-size:12px;line-height:1.85;color:#9bb8b5}.explain button{width:100%;text-align:left;border:0;border-top:1px solid #35534e;border-radius:0;margin-top:7px;padding:14px 0 0;font-size:12px;color:var(--mint)}.explain button span{float:right}.clinical{margin-top:30px;color:#7e969e}.clinical strong{font-size:11px;font-weight:500}.clinical p{font-size:11px;line-height:1.9}.clinical a{font-size:10px;color:#8ca9a5}.results{max-height:230px;overflow:auto;background:#17292b;padding:7px;margin-top:5px}.results button{display:block;width:100%;padding:9px;text-align:left;font-size:12px;border:0}.results small{display:block;color:#91a6a5;font-size:10px}.results p{font-size:12px;color:var(--muted)}#loading{position:absolute;inset:0;background:#17262ee8;z-index:4;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:18px}#loading strong{font-size:16px;font-weight:400}#load-progress{font-size:12px;color:#93aaa9}.spinner{border:2px solid #3d5c58;border-top-color:var(--mint);width:32px;height:32px;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);background:#d7eee6;color:#193b31;padding:12px 24px;border-radius:8px;box-shadow:0 5px 35px #0005;opacity:0;pointer-events:none;transition:.2s;z-index:10;font-size:13px}.presentation .sidebar,.presentation .details{display:none}.presentation main{grid-template-columns:1fr}.presentation .edition{display:none}@media(min-width:1600px){main{grid-template-columns:300px minmax(280px,1fr) 340px}.sidebar,.details{padding:35px 30px}}@media(max-width:1050px){main{grid-template-columns:220px minmax(280px,1fr)}.sidebar{padding:24px 17px}.details{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:20px;overflow:visible}.details>.eyebrow{display:none}.detail-body{padding:0}.detail-icon{display:none}.clinical{grid-column:1/-1;margin:0}.brand-sub{display:none}main{height:auto;min-height:0}.viewport,.sidebar{height:calc(100dvh - 78px);min-height:600px}}@media(max-width:600px){header{height:64px;padding:0 16px}.brand{font-size:19px;gap:9px}.edition{display:none}.header-right button{font-size:11px;padding:8px}main{display:flex;flex-direction:column}.viewport{order:0;height:65dvh;min-height:460px}.sidebar{order:1;height:auto;min-height:0;padding:20px}.details{order:2;display:block;padding:23px}.sidebar h1,.sidebar .intro,.sidebar>.eyebrow,.guide{display:none}.section-head{margin:18px 0 10px}#layers{display:grid;grid-template-columns:1fr 1fr;column-gap:25px}.regions{grid-template-columns:repeat(3,1fr)}.source{display:block;margin-top:20px}.view-top{top:22px;left:20px;right:18px}.camera-tools{bottom:58px}.camera-tools button{padding:10px}.view-bottom{bottom:12px;left:20px;right:16px}.orientation{right:15px}.presentation .viewport{height:calc(100dvh - 64px)}.explain{margin-top:5px}}
.opacity-row{white-space:nowrap}.opacity-row input{flex:1}.opacity-row span{min-width:31px}h1{font-size:clamp(18px,1.6vw,22px)}@media(max-width:800px){header{padding:0 18px}.edition{display:none}.brand-sub{display:none}main{display:flex;flex-direction:column}.viewport{order:0;height:72dvh;min-height:500px}.sidebar{order:1;height:auto;min-height:0;padding:22px}.sidebar h1,.sidebar .intro,.sidebar>.eyebrow,.guide{display:none}#layers{display:grid;grid-template-columns:1fr 1fr;column-gap:25px}.regions{grid-template-columns:repeat(3,1fr)}.source{display:block;margin-top:20px}.details{order:2;display:block}.presentation .viewport{height:calc(100dvh - 78px)}}
.eyebrow,.brand-sub,.edition,.intro,.section-head,.layer-name small,.opacity-row,.guide>span,.guide small,.source,.view-top .eyebrow,#mesh-count,.orientation,.view-bottom,.view-bottom button,.pill,.clinical strong,.clinical p,.clinical a,.results small,.text-button{font-size:12px}.layer-name,.regions button,.camera-tools button,.header-right button,#part-description,.action-row button,.explain p,.explain button{font-size:14px}.section-head button{font-size:12px}.search input{font-size:14px}.guide p{font-size:14px}
/* Anatomy learning and motion */
[hidden]{display:none!important}.quick-topics{display:flex;flex-wrap:wrap;gap:6px}.quick-topics button{padding:8px 10px;font-size:13px;color:#a6dfcf}.details{position:relative}.review-state{display:block;color:#819b98;font-size:12px;line-height:1.5;margin-bottom:15px}.detail-icon{display:none}.detail-body{padding-top:20px}.anatomy-facts{margin:20px 0}.anatomy-facts dt{font-size:12px;color:#81cfb9;margin:18px 0 6px;letter-spacing:1px}.anatomy-facts dd{margin:0;font-size:14px;line-height:1.85;color:#d3dfdf}.scope-note{font-size:12px;line-height:1.7;color:#8ba6ab;padding:10px 0;border-bottom:1px solid var(--line)}.point-card{padding:16px;background:#1e3434;border-left:2px solid #89cfbd;margin:22px 0}.point-card strong{font-size:13px;color:#a2dcca}.point-card p{font-size:14px;line-height:1.85;margin:9px 0 0}.knowledge-heading{font-size:14px;font-weight:500;margin:23px 0 12px}.relation-list{display:grid;gap:6px}.relation-list button{padding:10px 12px;text-align:left;background:#16272b}.relation-list span{display:block;color:#809b9e;font-size:12px}.relation-list strong{display:block;font-size:14px;font-weight:400;margin-top:5px;color:#c2e1d7}.wide-button{width:100%;padding:12px;margin:10px 0;font-size:13px}.motion-start{margin:16px 0}.references{margin:18px 0;color:#8ea7ab;font-size:12px;line-height:1.7}.references summary{cursor:pointer}.references a{display:block;color:#9dcabd;margin:9px 0}#detail-close{display:none}#detail-peek{position:absolute;z-index:3;top:101px;left:30px;padding:8px 12px;background:#17342feb;font-size:12px;color:#a3e1cd}.joint-toggle{position:absolute;right:25px;top:63px;z-index:3;background:#11282bd9;color:#9ab8b5;padding:7px 10px;font-size:12px}.joint-marker{position:absolute;z-index:3;transform:translate(-50%,-50%);border:1px solid #a2edce;background:#153e34e8;color:#c3f9e9;box-shadow:0 0 0 4px #69c3a31f;border-radius:18px;padding:7px 10px;font-size:12px;white-space:nowrap;touch-action:none;cursor:ns-resize}#motion-hud{position:absolute;z-index:5;bottom:62px;left:25px;right:25px;background:#102226f2;border:1px solid #4b8272;border-radius:10px;padding:15px 18px;box-shadow:0 12px 30px #0005}.motion-heading{display:flex;justify-content:space-between;gap:10px;align-items:center}.motion-heading strong{display:block;font-size:16px;font-weight:500;margin-top:7px}.motion-heading button{font-size:20px;width:30px;height:30px;flex-shrink:0}.motion-slider{display:flex;align-items:center;gap:10px;margin:20px 0 15px}.motion-slider span{font-size:12px;white-space:nowrap}.motion-slider input{height:6px}.motion-slider output{min-width:38px;color:#91e7ca;font-size:16px}.motion-actions{display:flex;flex-wrap:wrap;align-items:center;gap:7px}.motion-actions button{padding:7px 10px;font-size:13px}.motion-actions label{font-size:12px;margin-left:auto;display:flex;align-items:center;gap:6px}.motion-actions input{width:15px;accent-color:#8bdac4}#motion-note{font-size:12px;color:#9fbbb8;line-height:1.7;margin:12px 0 0}.motion-active .camera-tools{bottom:320px}.motion-active .joint-toggle{display:none}.motion-active .orientation{opacity:.6}#selection-actions{border-top:1px solid var(--line);padding-top:18px}.details .explain{margin-top:22px}.detail-open #detail-peek{opacity:.65}
@media(min-width:1051px){main{grid-template-columns:260px minmax(280px,1fr) 350px}.details{padding:27px 24px}.sidebar{padding:27px 20px}.details h2{font-size:24px}.detail-open #detail-peek{display:none}}
@media(max-width:1050px){.details{display:none}.detail-open .details{display:block;position:fixed;z-index:20;right:14px;bottom:14px;top:95px;width:355px;max-width:calc(100vw - 28px);overflow:auto;border:1px solid #43665e;border-radius:12px;box-shadow:0 10px 50px #0008;padding:24px}.detail-open #detail-close{display:block;position:sticky;float:right;top:0;width:30px;height:30px;background:#233c38;z-index:2}.detail-open .details>.eyebrow{display:block}.details .clinical{margin-top:24px}.details .explain{display:none}}
@media(max-width:800px){.viewport{height:76dvh;min-height:550px}.detail-open .details{top:auto;bottom:0;right:0;width:100%;max-width:100%;max-height:46dvh;border-radius:16px 16px 0 0;padding:18px 24px}.detail-body{padding-top:8px}.review-state{margin-bottom:8px}.detail-body h2{font-size:21px}.detail-open .details>.eyebrow{display:none}.joint-toggle{right:16px;top:68px}#detail-peek{left:20px;top:95px}#motion-hud{left:10px;right:10px;bottom:48px;padding:13px}.motion-heading strong{font-size:14px}.motion-heading .eyebrow{font-size:11px}.motion-actions label{margin-left:0}.motion-active .camera-tools{bottom:315px}.motion-active .viewport{height:90dvh;min-height:670px}.motion-slider{gap:6px}#motion-note{font-size:12px}.quick-topics button{font-size:14px}}
.motion-active .camera-tools{bottom:auto;top:160px;left:auto;right:20px;transform:none}.motion-active .camera-tools button{padding:8px;font-size:12px}@media(max-width:800px){.motion-active .camera-tools{top:145px;right:12px}.motion-active .camera-tools button{padding:7px}}

/* Connected upper-limb rig */
.rig-launch{display:block;width:100%;padding:13px 10px;margin-top:18px;background:linear-gradient(120deg,#254d45,#193333);border-color:#528d7d;text-align:left;font-size:14px;color:#c1efdf}.rig-launch span{display:block;color:#7fcbb5;font-size:10px;letter-spacing:1.8px;margin-bottom:7px}#rig-presets{display:flex;gap:6px;margin:14px 0 0}#rig-presets button{flex:1;padding:8px 4px;font-size:12px}#rig-presets button.active{background:#375d51;border-color:#87d1b7;color:#d0f7e7}#rig-controls{border-top:1px solid #36534f;margin:8px 0 13px;padding-top:10px}#rig-controls summary{cursor:pointer;font-size:13px;color:#b8d6cd}#rig-controls summary span{float:right;color:#799e92;font-size:11px}.rig-sliders{display:grid;grid-template-columns:1fr 1fr;gap:12px 20px;margin:16px 0 8px}.rig-sliders label{font-size:12px;display:grid;grid-template-columns:1fr 32px;gap:7px}.rig-sliders input{grid-row:2;grid-column:1;height:6px;min-width:0;width:100%;accent-color:#8bdac4}.rig-sliders output{grid-row:2;grid-column:2;font-size:12px;color:#9ee8ce}#rig-status{font-size:11px;color:#95bfb0;margin:0 0 12px;line-height:1.6}#rig-guide-control{font-size:12px;color:#9cb9b1;display:flex;align-items:center;gap:5px;margin-top:12px}#rig-guide{width:15px;accent-color:#8bdac4}#motion-hud{max-height:52%;overflow-y:auto}.motion-slider input{min-width:0;flex:1}.motion-slider output{white-space:nowrap}body:has(#rig-controls[open]) #motion-note{display:none}@media(max-width:800px){.rig-sliders{gap:10px 15px}#motion-hud{max-height:49%}#rig-status{font-size:10px}.motion-active .viewport{min-height:760px}#motion-note{font-size:11px;line-height:1.5}}

.motion-active .camera-tools{top:83px;right:12px}.motion-active .orientation{display:none}@media(max-width:800px){.motion-active .camera-tools{top:77px}.motion-active #detail-peek{top:62px}.motion-active .view-top{top:16px}.motion-active #mesh-count{display:none}}

#motion-hud[data-mode="chain"] #motion-note{display:none}#motion-hud[data-mode="chain"] .motion-slider{margin:14px 0 12px}#rig-controls{margin-bottom:10px}.motion-active .viewport{min-height:650px}@media(max-width:800px){.motion-active .viewport{height:calc(100dvh - 64px);min-height:650px}}

/* Direct manipulation and focused structure review */
#explore-tools{display:flex;align-items:end;gap:6px;margin-top:12px}#explore-tools>label{font-size:11px;color:#a5c4b9;flex:1}#trace-nerve{display:block;width:100%;margin-top:5px;padding:7px;background:#1a3431;border:1px solid #416c5d;color:#d9eee5;border-radius:5px;font-size:13px}#explore-tools button{padding:8px;font-size:12px}button:disabled{opacity:.4;cursor:default}#explore-options{padding-top:10px;border-bottom:1px solid #36534f}#explore-options p{font-size:12px;line-height:1.7;color:#a3c1b7;margin:6px 0 10px}#explore-options label{display:flex;align-items:center;gap:6px;font-size:12px}#fine-drag{width:15px;accent-color:#9ed9c0}.compare-row{display:flex;gap:5px;margin:12px 0 8px}.compare-row button{flex:1;font-size:11px;padding:8px 3px}#compare-note{display:block;font-size:11px;line-height:1.6;color:#8acbb5;margin-bottom:9px}#trace-legend{font-size:11px;line-height:1.6;color:#b6d7c8;margin:8px 0 0}.motion-handle{z-index:4;padding:6px 9px;border-radius:20px;box-shadow:0 0 0 4px #7cddbb24;font-size:11px;cursor:grab;min-height:32px}.motion-handle:active{cursor:grabbing;background:#32795e}.motion-active #motion-hud{max-height:55%}@media(max-width:800px){.motion-handle{min-height:38px;padding:7px 9px}.motion-active #motion-hud{max-height:53%}#explore-tools{gap:5px}.compare-row{flex-wrap:wrap}.compare-row button{min-width:65px}}
/* Keep the anatomy large; playback presets are available inside the angle controls. */
#motion-hud[data-mode="chain"] #rig-presets,#motion-hud[data-mode="chain"]>.motion-slider{display:none}#motion-hud[data-mode="chain"]:has(#rig-controls[open]) #rig-presets{display:flex}#motion-hud[data-mode="chain"]:has(#rig-controls[open])>.motion-slider{display:flex}.motion-handle{min-width:32px;font-size:11px;padding:5px 7px;min-height:30px}.motion-handle::after{content:'';position:absolute;width:6px;height:6px;border-radius:50%;background:#b4f0d8;top:50%;right:-10px;pointer-events:none}@media(max-width:800px){.motion-handle{min-height:34px}}

.motion-handle::after{display:none}

/* Teaching media stay with their anatomy article, loaded only on request. */
.clinical-media{margin:20px 0 26px;padding:16px;border:1px solid #427669;border-radius:14px;background:#122c29;color:#eef6f1;min-width:0}.media-eyebrow{color:#95deca;font-size:10px;letter-spacing:.12em}.clinical-media h3{font-size:17px;margin:9px 0 14px}.clinical-player{width:100%;min-height:200px;aspect-ratio:16/9;background:#071a18;border-radius:10px;overflow:hidden}.clinical-player iframe{display:block;width:100%;height:100%;min-height:200px;border:0}.clinical-play{width:100%;height:100%;min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:radial-gradient(ellipse at 50% 0%,#285b4e,#0b211e);color:#c3e9dc;border:0;cursor:pointer;padding:18px}.clinical-play strong{font-size:14px;color:#fff}.clinical-play span:last-child{font-size:11px}.play-symbol{font-size:28px;border:1px solid #80b7a5;border-radius:50%;width:52px;height:52px;display:grid;place-items:center}.clinical-play:hover{filter:brightness(1.15)}.media-external{display:block;color:#a1e3ce;font-size:12px;margin:12px 0;line-height:1.7}.media-note,.clinical-figure figcaption{font-size:11px;line-height:1.8;color:#b0c6bd}.clinical-figure{margin:18px 0 0}.reference-open{display:block;width:100%;padding:0;border:1px solid #5a8274;border-radius:8px;overflow:hidden;background:#203d34;color:#d7f0e5;cursor:pointer}.reference-open img{width:100%;height:auto;display:block;background:white}.reference-open span{display:block;padding:10px;font-size:12px}.clinical-figure figcaption{margin-top:9px}.clinical-reading{margin:14px 0 0}.clinical-reading p{font-size:12px;line-height:1.9}.reference-dialog{width:min(1200px,94vw);max-width:94vw;max-height:92dvh;padding:0;border:1px solid #648573;border-radius:14px;background:#12271f;color:#eef6f1}.reference-dialog::backdrop{background:#020d0ad9}.reference-toolbar{display:flex;align-items:center;gap:10px;padding:14px;border-bottom:1px solid #3a574a}.reference-toolbar strong{margin-right:auto;font-size:14px}.reference-toolbar button{padding:10px 12px;background:#254c3e;color:#fff;border:1px solid #6b9d84;border-radius:7px;cursor:pointer;white-space:nowrap}.reference-scroll{overflow:auto;max-height:calc(92dvh - 140px);background:#fff;overscroll-behavior:contain}.reference-scroll img{display:block;width:100%;height:auto;max-width:none}.reference-scroll.is-zoomed img{width:1722px}.reference-dialog>.media-note{padding:0 14px}.clinical-media button:focus-visible,.reference-dialog button:focus-visible{outline:3px solid #e7c25e;outline-offset:-3px}@media(max-width:600px){.clinical-media{padding:12px}.reference-toolbar{flex-wrap:wrap;padding:10px}.reference-toolbar strong{width:100%}.reference-toolbar button{flex:1}.reference-scroll{max-height:calc(92dvh - 175px)}}

.clinical-player video{display:block;width:100%;height:100%;min-height:200px;object-fit:contain;background:#071a18}

.clinical-player{position:relative;min-height:0}.clinical-player video{min-height:0}.clinical-cover-play{position:absolute;left:50%;bottom:8px;transform:translateX(-50%);padding:10px 17px;border:1px solid #b5ead7;border-radius:24px;background:#07271be8;color:white;font-weight:700;cursor:pointer;white-space:nowrap}.clinical-cover-play[hidden]{display:none}.clinical-controls{padding:12px 0 0}.clinical-time-row{display:flex;justify-content:space-between;align-items:center;gap:10px}.clinical-time-row output{font-size:13px;font-variant-numeric:tabular-nums;color:#e5f5ed}.clinical-controls button{padding:9px 12px;border:1px solid #527f6e;border-radius:8px;background:#234a3d;color:#e7fff3;cursor:pointer;min-height:42px}.clinical-seek{display:block;width:100%;height:36px;margin:7px 0 0;accent-color:#95e3bd;cursor:ew-resize;touch-action:none}.clinical-chapters{display:grid;grid-template-columns:1fr 1fr;gap:8px}.clinical-chapters button{font-size:12px}.clinical-controls .media-note{margin:4px 0 9px}.clinical-controls .media-note:empty{display:none}

.clinical-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#071a18}.clinical-poster[hidden]{display:none}.clinical-cover-play{z-index:1}
.video-expand{display:block;width:100%;padding:13px;margin:12px 0 0;border:1px solid #90d9bd;border-radius:9px;background:#285d48;color:#fff;font-weight:700;cursor:pointer}.video-viewer{position:fixed;inset:0;width:100vw;max-width:none;height:100dvh;max-height:none;margin:0;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);border:0;background:#061310;color:#e6fff3;box-sizing:border-box;overscroll-behavior:none}.video-viewer[open]{display:flex;flex-direction:column}.video-viewer::backdrop{background:#020806}.video-viewer-toolbar{display:flex;align-items:center;justify-content:center;gap:6px;padding:8px;flex-shrink:0;flex-wrap:wrap}.video-viewer-toolbar button{border:1px solid #4e7967;border-radius:8px;background:#214b3b;color:white;min-height:40px;padding:7px 12px;cursor:pointer}.video-viewer-toolbar output{min-width:42px;text-align:center;font-variant-numeric:tabular-nums}.video-viewer-stage{position:relative;flex:1;min-height:120px;overflow:hidden;touch-action:none;user-select:none;background:#000}.video-viewer-stage.is-zoomed{cursor:grab}.video-viewer-stage.is-zoomed:active{cursor:grabbing}.video-viewer-stage .clinical-player{position:absolute;left:50%;top:50%;margin:0;min-height:0;aspect-ratio:auto;border-radius:0;transform-origin:center;will-change:transform}.video-viewer-stage video,.video-viewer-stage .clinical-poster{pointer-events:none}.video-viewer-hint{font-size:11px;color:#adcebf;text-align:center;margin:7px 10px;flex-shrink:0}.video-viewer>.clinical-controls{flex-shrink:0;margin:0 auto;width:min(100%,1100px);padding:4px 14px 10px;box-sizing:border-box}.video-viewer .clinical-controls>.media-note{display:none}.video-viewer .clinical-controls .clinical-chapters{grid-template-columns:repeat(4,1fr)}.video-viewer .clinical-seek{height:30px}.video-viewer .clinical-controls button{min-height:36px;padding:6px}.video-viewer button:focus-visible,.video-viewer-stage:focus-visible{outline:2px solid #edcf80;outline-offset:-2px}@media(orientation:landscape) and (max-height:600px){.video-viewer-toolbar{padding:3px;gap:5px}.video-viewer-toolbar button{min-height:30px;padding:4px 10px}.video-viewer-hint{display:none}.video-viewer>.clinical-controls{display:grid;grid-template-columns:130px minmax(100px,1fr) auto;gap:10px;align-items:center;padding:4px 12px}.video-viewer .clinical-time-row{gap:4px}.video-viewer .clinical-time-row output{font-size:11px}.video-viewer .clinical-controls .clinical-chapters{display:flex;gap:4px}.video-viewer .clinical-chapters button{font-size:10px}.video-viewer .clinical-seek{margin:0}.video-viewer-stage{min-height:80px}}

/* Phone layout: prevent min-content tracks and focus-triggered iOS page zoom. */
main>*,.sidebar,.details,.layer,.layer-name,.search,.clinical-controls{min-width:0}
.layer-name small,.detail-body,.clinical-media,.media-note{overflow-wrap:anywhere}
.regions,.quick-topics,.clinical-chapters{grid-template-columns:repeat(2,minmax(0,1fr))}
button{touch-action:manipulation}
.video-expand-corner{position:absolute;right:8px;top:8px;z-index:3;min-height:40px;padding:8px 12px;background:#09291dec;color:#fff;border:1px solid #9be1c2}
[data-expanded=true] .video-expand-corner{display:none}
.video-viewer-caption{flex:none;min-height:2.8em;text-align:center;font-size:clamp(16px,2.2vw,21px);line-height:1.4;padding:8px 14px;overflow-wrap:anywhere;background:#112c22;color:#fff}
.video-viewer .clinical-controls .clinical-chapters{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){
 input:not([type=range]):not([type=checkbox]),select,textarea{font-size:16px!important}
 main{width:100%;max-width:100%}
 .sidebar,.details{max-width:100%}
 #layers{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:14px}
 .layer-row{gap:7px}.layer-name{overflow-wrap:anywhere}.swatch{flex-shrink:0}
 .opacity-row{margin-left:0;gap:6px}.opacity-row input{width:0;flex:1;min-width:0}
 .clinical-media,.detail-body,#knowledge{max-width:100%;min-width:0}
 .clinical-time-row output{white-space:nowrap}.clinical-controls button{overflow-wrap:anywhere}
 .camera-tools{max-width:calc(100% - 20px);gap:3px}.camera-tools button{padding:8px 9px}
 #toast{max-width:calc(100% - 24px);white-space:normal;overflow-wrap:anywhere}
 .view-top{left:16px;right:16px;gap:8px}.view-top>div{min-width:0}
 .view-top h2{overflow-wrap:anywhere}#mesh-count{flex-shrink:0}
 .video-viewer-toolbar{gap:4px;padding:6px}.video-viewer-toolbar button{padding:7px 9px}
 .video-viewer>.clinical-controls{padding-left:10px;padding-right:10px}
}
@media(max-width:380px){header{padding-left:12px;padding-right:12px}.brand{gap:6px;letter-spacing:2px}.header-right button{padding:9px 7px}.sidebar{padding:20px 16px}.detail-open .details{padding:16px}.video-viewer-toolbar button{padding:7px}.video-viewer .clinical-chapters button{font-size:11px}}
@media(orientation:landscape) and (max-height:600px){.video-viewer-caption{font-size:16px;min-height:0;padding:3px 12px}.video-viewer-toolbar{padding:3px}.video-viewer-toolbar button{padding:4px 10px}.video-viewer-stage{min-height:0}}
.clinical-time-row>button{white-space:nowrap}
@media(orientation:landscape) and (max-height:600px){.video-viewer>.clinical-controls{grid-template-columns:160px minmax(80px,1fr) auto}}

.official-logo{display:block;width:180px;height:auto;background:#fff;border-radius:5px}.brand{gap:10px}.video-shell{min-width:0}.video-viewer{z-index:1000}.video-inline-stage{position:relative}.video-viewer-stage{flex-basis:0}.video-shell:not(.video-viewer) .clinical-controls{padding-bottom:10px}@media(max-width:800px){.official-logo{width:145px}}

.official-logo{background:none;border-radius:0;width:160px;height:41px;overflow:visible}.video-retry[hidden]{display:none}.video-viewer .clinical-controls>.video-load-status:not(:empty){display:block;grid-column:1/-1}.video-retry{grid-column:1/-1}@media(max-width:800px){.official-logo{width:140px;height:36px}}

.native-player{border-radius:0;overflow:visible}.native-player video{position:static;transform:none;aspect-ratio:16/9;width:100%;height:auto;object-fit:contain}.native-player+.clinical-chapters{margin-top:10px}

#rig-presets{flex-wrap:wrap}#rig-presets button{flex:1 0 25%;font-size:13px}#shoulder-observe{margin-top:10px}#shoulder-observe button{font-size:13px;padding:8px;margin:3px}#shoulder-observe p{font-size:12px;line-height:1.6;color:#aac6bd}#shoulder-observe a{color:#9adfc7}#organ-picks{margin-bottom:12px}

.course-link{color:#88e1c9;text-decoration:none;border:1px solid #42685f;border-radius:6px;padding:10px 12px;font-size:14px;line-height:1.4}.header-right{flex-wrap:wrap}@media(max-width:600px){.course-link{font-size:12px;padding:8px}.header-right{gap:6px}}

.sidebar>.course-link{display:block;margin:16px 0;}