:root{color-scheme:light;--paper:#f3f0ea;--surface:rgba(255,255,255,.74);--surface-solid:#fbfaf7;--ink:#171918;--muted:#747772;--line:rgba(30,34,31,.1);--accent:#236653;--accent-soft:#dfece6;--warm:#c9654b;--shadow:0 18px 60px rgba(58,53,44,.09);--radius:24px}
*{box-sizing:border-box}html{height:100%;scroll-behavior:smooth}body{margin:0;min-height:100%;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",sans-serif;color:var(--ink);background:var(--paper);background-image:radial-gradient(circle at 14% 4%,rgba(255,255,255,.9),transparent 26%),radial-gradient(circle at 88% 94%,rgba(201,101,75,.07),transparent 27%);overflow-x:hidden}button,input,select{font:inherit}.topbar{height:72px;width:min(1480px,calc(100% - 40px));margin:0 auto;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;white-space:nowrap}.brand img{width:32px;height:32px;object-fit:contain}.brand span{font-size:19px;font-weight:750;letter-spacing:-.03em}.brand i{width:1px;height:17px;background:var(--line);margin:0 2px}.brand strong{font-family:Georgia,serif;font-size:17px;font-weight:500;font-style:italic;color:#535650}.topbar-center{position:absolute;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}.live-dot{width:6px;height:6px;border-radius:50%;background:#62a67f;box-shadow:0 0 0 4px rgba(98,166,127,.12)}.topbar-actions{display:flex;align-items:center;gap:8px}.language-picker,.home-link{height:38px;border:1px solid var(--line);background:rgba(255,255,255,.55);border-radius:12px;display:flex;align-items:center;gap:8px;padding:0 11px;color:#464945;text-decoration:none;font-size:12px;font-weight:600}.language-picker select{border:0;background:transparent;outline:0;color:inherit;font-weight:650;cursor:pointer}.globe{font-size:17px}.home-link b{font-size:14px}.app-shell{width:min(1480px,calc(100% - 40px));height:calc(100vh - 96px);min-height:650px;margin:12px auto;display:grid;grid-template-columns:285px minmax(430px,1fr) 340px;gap:12px}.panel{border:1px solid rgba(255,255,255,.86);background:var(--surface);backdrop-filter:blur(18px);box-shadow:var(--shadow);border-radius:var(--radius);overflow:hidden}.library,.details{padding:26px 22px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#c9cac5 transparent}.section-label{display:flex;align-items:center;justify-content:space-between;color:#8a8c86;font-size:9px;font-weight:800;letter-spacing:.17em}.section-label em{font-style:normal;letter-spacing:.06em;background:#ecebe6;color:#62655f;padding:5px 7px;border-radius:7px}.section-label.plain{display:block}.library h1{font-family:Georgia,serif;font-size:31px;font-weight:500;line-height:1.04;letter-spacing:-.035em;margin:16px 0 11px}.intro{color:var(--muted);font-size:13px;line-height:1.55;margin:0 0 18px}.search-box{height:40px;border:1px solid var(--line);background:rgba(255,255,255,.7);border-radius:12px;display:flex;align-items:center;gap:8px;padding:0 12px;margin-bottom:14px}.search-box span{font-size:20px;color:#858882;transform:rotate(-18deg)}.search-box input{border:0;background:none;outline:0;width:100%;font-size:12px;color:var(--ink)}.organ-list{display:grid;gap:6px}.organ-button{position:relative;width:100%;min-height:62px;border:0;background:transparent;border-radius:15px;display:grid;grid-template-columns:42px 1fr 18px;align-items:center;gap:11px;text-align:left;padding:8px;cursor:pointer;color:var(--ink);transition:.25s ease}.organ-button:hover{background:rgba(255,255,255,.72)}.organ-button.active{background:#fff;box-shadow:0 8px 24px rgba(48,53,49,.08)}.organ-button.active:before{content:"";position:absolute;left:-4px;width:3px;height:28px;border-radius:3px;background:var(--organ-color)}.organ-thumb{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:color-mix(in srgb,var(--organ-color) 12%,white);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--organ-color) 16%,transparent)}.organ-thumb svg{width:29px;height:29px;filter:drop-shadow(0 4px 4px rgba(56,37,31,.12))}.organ-copy strong,.organ-copy small{display:block}.organ-copy strong{font-size:13px;letter-spacing:-.01em}.organ-copy small{color:#969994;font-size:10px;margin-top:3px}.organ-arrow{font-size:16px;color:#aaa}.organ-button.active .organ-arrow{color:var(--organ-color);transform:translateX(2px)}.viewer{position:relative;display:grid;grid-template-rows:auto 1fr auto;background:linear-gradient(145deg,rgba(250,249,245,.84),rgba(232,232,224,.72));isolation:isolate}.viewer:before{content:"";position:absolute;inset:0;z-index:-1;background-image:linear-gradient(rgba(54,67,60,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(54,67,60,.035) 1px,transparent 1px);background-size:42px 42px;mask-image:radial-gradient(circle,#000,transparent 72%)}.viewer-top,.viewer-footer{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;z-index:2}.viewer-top strong{display:block;font-family:Georgia,serif;font-size:20px;font-weight:500;margin-top:5px}.viewer-actions{display:flex;gap:7px}.icon-button{width:36px;height:36px;border-radius:11px;border:1px solid var(--line);background:rgba(255,255,255,.64);color:#777b75;cursor:pointer;transition:.2s}.icon-button:hover,.icon-button.active{background:#fff;color:var(--accent);box-shadow:0 5px 15px rgba(45,54,49,.08)}.model-stage{position:relative;min-height:0;display:grid;place-items:center;perspective:1000px;touch-action:none;cursor:grab;overflow:hidden}.model-stage.dragging{cursor:grabbing}.ambient-ring{position:absolute;border:1px solid rgba(39,80,67,.1);border-radius:50%;pointer-events:none}.ring-one{width:min(62%,470px);aspect-ratio:1;transform:rotateX(67deg);bottom:12%}.ring-two{width:min(45%,340px);aspect-ratio:1;transform:rotateX(67deg);bottom:19%;border-style:dashed}.organ-model{position:relative;width:min(48vw,390px);height:min(57vh,490px);transform-style:preserve-3d;will-change:transform;z-index:1;transition:filter .35s ease}.organ-layer{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}.organ-layer svg{width:100%;height:100%;overflow:visible}.organ-layer.depth{filter:brightness(.65) saturate(.9)}.organ-layer.front{filter:drop-shadow(0 22px 22px rgba(64,43,37,.15))}.model-shadow{position:absolute;width:260px;height:38px;border-radius:50%;bottom:13%;background:rgba(54,47,41,.16);filter:blur(14px);transform:rotateX(68deg);transition:.3s}.model-status{position:absolute;left:21px;top:18px;display:flex;align-items:center;gap:7px;color:#7e817b;font-size:8px;letter-spacing:.15em}.model-status span{width:5px;height:5px;background:#55a27b;border-radius:50%;box-shadow:0 0 0 3px rgba(85,162,123,.12)}.gesture-hint{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:8px;padding:9px 13px;border:1px solid rgba(255,255,255,.72);background:rgba(250,250,247,.72);backdrop-filter:blur(8px);border-radius:12px;color:#777a75;font-size:10px;white-space:nowrap;transition:opacity .3s}.gesture-icon{font-size:16px;color:var(--accent)}.viewer-footer{border-top:1px solid rgba(40,45,41,.07)}.axis{display:flex;align-items:center;gap:8px;font-size:10px;color:#888b86}.axis i{width:8px;height:8px;border-radius:50%;border:2px solid var(--accent)}.zoom-control{display:flex;align-items:center;gap:8px}.zoom-control button{width:28px;height:28px;border:0;border-radius:8px;background:rgba(255,255,255,.7);color:#696c67;cursor:pointer}.zoom-control input{width:100px;accent-color:var(--accent)}.detail-head{display:flex;align-items:center;justify-content:space-between}.organ-index{font-family:Georgia,serif;font-size:15px;color:#9a9c97}.system-chip{padding:7px 9px;border-radius:8px;background:var(--accent-soft);color:var(--accent);font-size:9px;font-weight:700}.details h2{font-family:Georgia,serif;font-size:42px;font-weight:500;letter-spacing:-.045em;margin:27px 0 0;line-height:1}.latin-name{font-family:Georgia,serif;font-style:italic;color:#a0a19d;font-size:13px;margin:7px 0 20px}.summary{color:#5f625e;line-height:1.65;font-size:13px;margin:0 0 22px}.facts{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;margin-bottom:24px}.fact{padding:4px 12px}.fact:first-child{padding-left:0;border-right:1px solid var(--line)}.fact span,.fact strong{display:block}.fact span{font-size:9px;color:#999b96;text-transform:uppercase;letter-spacing:.12em;margin-bottom:5px}.fact strong{font-size:12px;font-weight:650}.functions ol{list-style:none;padding:0;margin:13px 0 22px;display:grid;gap:8px;counter-reset:tasks}.functions li{counter-increment:tasks;display:grid;grid-template-columns:27px 1fr;align-items:center;gap:10px;color:#555954;font-size:12px;line-height:1.4}.functions li:before{content:counter(tasks);width:25px;height:25px;border-radius:8px;background:#eeede8;color:#747771;display:grid;place-items:center;font-size:9px;font-weight:700}.did-you-know{display:grid;grid-template-columns:30px 1fr;gap:10px;padding:14px;border-radius:15px;background:linear-gradient(135deg,#eef3ed,#e7efe9);color:#42544c}.did-you-know .bulb{width:28px;height:28px;background:#fff;border-radius:9px;display:grid;place-items:center;color:#528267}.did-you-know strong{font-size:10px}.did-you-know p{font-size:10px;line-height:1.5;margin:4px 0 0;color:#68756f}.medical-note{text-align:center;color:#a2a49f;font-size:8px;margin:18px 0 0}.mobile-organ-nav{display:none}
@media(max-width:1100px){.topbar-center{display:none}.app-shell{grid-template-columns:230px minmax(390px,1fr)}.details{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:18px;height:auto}.detail-head,.details h2,.latin-name,.summary{grid-column:1}.facts,.functions,.did-you-know,.medical-note{grid-column:2}.facts{grid-row:1/3;margin-top:0}.functions{grid-row:3/5}.did-you-know{align-self:end}.medical-note{display:none}}
@media(max-width:760px){body{padding-bottom:76px}.topbar{width:calc(100% - 24px);height:62px}.brand i,.brand strong,.home-link span{display:none}.home-link{width:38px;justify-content:center;padding:0}.app-shell{width:calc(100% - 20px);height:auto;min-height:0;margin:8px auto;display:flex;flex-direction:column}.library{display:none}.viewer{height:calc(100svh - 150px);min-height:510px;order:1}.organ-model{width:min(82vw,370px);height:min(56vh,450px)}.viewer-top{height:60px;padding:0 16px}.viewer-footer{height:54px;padding:0 14px}.gesture-hint{bottom:14px;max-width:86%;white-space:normal;text-align:center}.details{order:2;display:block;padding:25px 22px}.details h2{font-size:38px}.facts{margin-top:0}.mobile-organ-nav{position:fixed;z-index:30;display:flex;bottom:0;left:0;right:0;height:70px;overflow-x:auto;gap:7px;padding:9px 12px calc(9px + env(safe-area-inset-bottom));background:rgba(245,243,238,.9);backdrop-filter:blur(18px);border-top:1px solid var(--line);scrollbar-width:none}.mobile-organ-button{flex:0 0 48px;height:48px;border:1px solid transparent;border-radius:14px;background:rgba(255,255,255,.65);display:grid;place-items:center;padding:6px}.mobile-organ-button.active{border-color:var(--organ-color);background:#fff}.mobile-organ-button svg{width:32px;height:32px}.zoom-control input{width:76px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.organ-model{transition:none!important}}

/* Chromium/Electron-safe SVG compositor rules. */
#organModel.organ-model{width:390px;max-width:68%;height:490px;max-height:78%;transform-style:flat;contain:layout paint;isolation:isolate}
#organModel .organ-layer{position:absolute;inset:0;width:100%;height:100%;display:block;contain:strict}
#organModel .organ-layer svg{display:block;width:100%!important;height:100%!important;max-width:100%!important;max-height:100%!important;overflow:hidden}
@media(max-width:760px){#organModel.organ-model{width:370px;max-width:82%;height:450px;max-height:76%}}

/* Professional WebGL anatomy viewer. */
#organModel.organ-model.webgl-model{width:100%;max-width:none;height:100%;max-height:none;contain:strict;transform:none!important}
.webgl-model iframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:#f5f3ee}
.model-stage:has(.webgl-model){cursor:default}
.model-stage:has(.webgl-model) .ambient-ring,.model-stage:has(.webgl-model) .model-shadow,.model-stage:has(.webgl-model) .gesture-hint{display:none}
.model-status{z-index:4;padding:8px 10px;border:1px solid rgba(255,255,255,.65);border-radius:10px;background:rgba(249,248,244,.78);backdrop-filter:blur(10px)}
.model-status a{margin-left:6px;color:#557269;text-decoration:none;font-size:8px;letter-spacing:.08em;border-left:1px solid var(--line);padding-left:9px}
.model-status a:hover{text-decoration:underline}
.viewer-footer.webgl-active .zoom-control{opacity:.38;pointer-events:none}
.viewer:has(.webgl-model) .viewer-actions,.viewer-footer.webgl-active{display:none}
@media(max-width:760px){#organModel.organ-model.webgl-model{width:100%;max-width:none;height:100%;max-height:none}.model-status{top:10px;left:10px}}

/* Function callouts remain readable while the WebGL organ rotates below. */
.function-hotspots{position:absolute;inset:0;z-index:3;pointer-events:none}
.function-hotspot{--pin:#236653;position:absolute;display:flex;align-items:center;gap:8px;pointer-events:auto;border:0;background:transparent;padding:0;cursor:pointer;color:var(--ink)}
.function-hotspot:nth-child(1){left:7%;top:28%}.function-hotspot:nth-child(2){right:7%;top:45%;flex-direction:row-reverse}.function-hotspot:nth-child(3){left:10%;bottom:20%}
.hotspot-pin{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--pin);color:white;font-size:10px;font-weight:800;border:3px solid rgba(255,255,255,.9);box-shadow:0 0 0 1px color-mix(in srgb,var(--pin) 35%,transparent),0 7px 18px rgba(27,48,40,.2);animation:hotspotPulse 2.6s ease-in-out infinite}
.hotspot-line{width:45px;height:1px;background:linear-gradient(90deg,var(--pin),transparent);position:relative}.function-hotspot:nth-child(2) .hotspot-line{transform:rotate(180deg)}
.hotspot-label{max-width:132px;padding:8px 10px;border:1px solid rgba(255,255,255,.74);border-radius:10px;background:rgba(250,249,246,.84);backdrop-filter:blur(10px);box-shadow:0 8px 24px rgba(47,50,45,.08);font-size:9px;font-weight:750;line-height:1.3;text-align:left}
.hotspot-card{position:absolute;width:210px;padding:14px;border:1px solid rgba(255,255,255,.86);border-radius:15px;background:rgba(250,249,246,.95);backdrop-filter:blur(16px);box-shadow:0 18px 44px rgba(36,43,38,.16);opacity:0;transform:translateY(7px);visibility:hidden;transition:.2s;pointer-events:none;text-align:left}
.function-hotspot.open .hotspot-card{opacity:1;transform:none;visibility:visible}.function-hotspot:nth-child(1) .hotspot-card{left:0;top:38px}.function-hotspot:nth-child(2) .hotspot-card{right:0;top:38px}.function-hotspot:nth-child(3) .hotspot-card{left:0;bottom:38px}
.hotspot-card strong{display:block;color:var(--pin);font-size:9px;letter-spacing:.12em;margin-bottom:6px}.hotspot-card p{margin:0;color:#5e625d;font-size:10px;line-height:1.55;font-weight:500}
@keyframes hotspotPulse{0%,100%{box-shadow:0 0 0 1px color-mix(in srgb,var(--pin) 35%,transparent),0 7px 18px rgba(27,48,40,.2)}50%{box-shadow:0 0 0 7px color-mix(in srgb,var(--pin) 10%,transparent),0 7px 18px rgba(27,48,40,.2)}}
@media(max-width:760px){.function-hotspot:nth-child(1){left:3%;top:24%}.function-hotspot:nth-child(2){right:3%;top:48%}.function-hotspot:nth-child(3){left:4%;bottom:14%}.hotspot-label{display:none}.hotspot-line{width:25px}.hotspot-card{width:min(210px,62vw)}.hotspot-pin{width:27px;height:27px}}
@media(prefers-reduced-motion:reduce){.hotspot-pin{animation:none}}

.rotate-badge{position:absolute;z-index:4;right:18px;bottom:17px;display:flex;align-items:center;gap:7px;padding:7px 10px;border:1px solid rgba(255,255,255,.75);border-radius:10px;background:rgba(250,249,246,.82);backdrop-filter:blur(10px);color:#6d716b;pointer-events:none}
.rotate-badge span{color:var(--accent);font-size:11px;font-weight:850}.rotate-badge b{font-size:9px;font-weight:650}
.hotspot-line{width:28px}.hotspot-label{max-width:108px;padding:7px 9px;font-size:9px}.hotspot-card{width:190px;padding:12px}.hotspot-card p{font-size:10px;line-height:1.45}
@media(max-width:760px){.rotate-badge{right:9px;bottom:9px}.rotate-badge b{display:none}.hotspot-line{width:18px}}

.viewer-top{gap:12px}.exposure-switch{display:flex;align-items:center;gap:4px;padding:4px;border-radius:12px;background:rgba(232,231,225,.7);margin-left:auto}.exposure-switch button{height:30px;padding:0 9px;border:0;border-radius:9px;background:transparent;color:#777a75;display:flex;align-items:center;gap:5px;font-size:9px;cursor:pointer}.exposure-switch button span{font-size:9px}.exposure-switch button b{font-weight:700}.exposure-switch button.active{background:#fff;color:var(--accent);box-shadow:0 4px 12px rgba(42,47,43,.09)}.exposure-switch button[data-exposure="smoking"].active{color:#514a45}.exposure-switch button[data-exposure="alcohol"].active{color:#a66a2c}.exposure-note{position:absolute;z-index:4;left:50%;bottom:17px;transform:translateX(-50%);width:min(390px,70%);display:grid;grid-template-columns:30px 1fr;gap:9px;padding:11px 13px;border:1px solid rgba(255,255,255,.8);border-radius:14px;background:rgba(250,248,243,.92);backdrop-filter:blur(14px);box-shadow:0 14px 38px rgba(44,43,39,.13);pointer-events:none}.exposure-note[hidden]{display:none}.exposure-note>span{width:28px;height:28px;border-radius:9px;background:#e9e2d9;color:#745c47;display:grid;place-items:center;font-weight:850}.exposure-note strong{display:block;font-size:10px}.exposure-note p{margin:3px 0 0;color:#6d6e69;font-size:9px;line-height:1.45}.viewer.has-exposure .function-hotspots{display:none}.viewer.has-exposure .rotate-badge{right:18px}.viewer.has-exposure .model-status{opacity:.65}
@media(max-width:900px){.exposure-switch button b{display:none}.exposure-switch button{width:30px;justify-content:center;padding:0}.exposure-note{width:min(360px,76%)}}
@media(max-width:760px){.exposure-switch{margin-left:auto}.exposure-note{left:10px;right:10px;bottom:47px;transform:none;width:auto}.viewer.has-exposure .rotate-badge{right:9px}}

/* Anatomy simulation lab: circulation and pregnancy. */
[hidden]{display:none!important}
.topbar:has(.experience-nav) .topbar-center{display:none}
.experience-nav{display:flex;align-items:center;gap:4px;padding:4px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.46)}
.experience-nav button{height:31px;padding:0 12px;border:0;border-radius:9px;background:transparent;color:#747772;font-size:11px;font-weight:720;cursor:pointer;transition:background .2s,color .2s,box-shadow .2s}
.experience-nav button:hover{color:var(--ink)}
.experience-nav button.active{background:#fff;color:var(--accent);box-shadow:0 5px 16px rgba(44,55,48,.08)}
.simulation-mode .app-shell,.simulation-mode .mobile-organ-nav{display:none!important}
.simulation-shell{width:min(1480px,calc(100% - 40px));height:calc(100vh - 96px);min-height:650px;margin:12px auto;display:grid;grid-template-columns:285px minmax(430px,1fr) 340px;gap:12px}
.simulation-controls,.simulation-guide{padding:26px 22px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#c9cac5 transparent}
.simulation-controls h1{font-family:Georgia,serif;font-size:31px;font-weight:500;line-height:1.04;letter-spacing:-.035em;margin:16px 0 11px}
.simulation-controls .intro{margin-bottom:24px}
.control-group{display:grid;gap:13px;padding:17px 0;border-top:1px solid var(--line)}
.control-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}
.control-heading strong{font-size:12px}.control-heading output{font-size:11px;font-weight:800;color:var(--accent);padding:5px 8px;border-radius:8px;background:var(--accent-soft)}
.control-group>input[type="range"]{width:100%;accent-color:var(--accent)}
.segmented-control{display:flex;gap:4px;padding:4px;border-radius:12px;background:rgba(224,226,220,.64)}
.segmented-control button{flex:1;min-width:0;height:33px;padding:0 7px;border:0;border-radius:9px;background:transparent;color:#787b76;font-size:9px;font-weight:760;cursor:pointer}
.segmented-control button.active{background:#fff;color:var(--accent);box-shadow:0 4px 12px rgba(42,47,43,.08)}
.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px;border-radius:13px;background:rgba(255,255,255,.54)}
.toggle-row span{display:grid;gap:3px}.toggle-row b{font-size:11px}.toggle-row small{font-size:9px;color:var(--muted)}
.toggle-row input{width:35px;height:20px;accent-color:var(--accent)}
.baby-heading{margin-top:4px}.baby-choice button:first-child.active{color:#9b4f69}.baby-choice button:last-child.active{color:#386e9c}
.choice-note{margin:0;color:#969994;font-size:9px;line-height:1.55}
.month-dots{display:grid;grid-template-columns:repeat(9,1fr);gap:4px}
.month-dots i{height:3px;border-radius:99px;background:#d8d9d4;transition:.25s}.month-dots i.active{background:var(--warm)}
.simulation-legend{display:grid;gap:9px;margin-top:12px;padding:15px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.45)}
.simulation-legend span{display:flex;align-items:center;gap:8px;color:#696c67;font-size:10px}
.simulation-legend i{width:8px;height:8px;border-radius:50%;box-shadow:0 0 0 4px color-mix(in srgb,currentColor 11%,transparent)}
.artery-dot{background:#d94c4c;color:#d94c4c}.vein-dot{background:#317bd6;color:#317bd6}.capillary-dot{background:#8b5ab4;color:#8b5ab4}.fluid-dot{background:#67b8c9;color:#67b8c9}.placenta-dot{background:#aa525e;color:#aa525e}.cord-dot{background:#d49a83;color:#d49a83}
.simulation-viewer{position:relative;display:grid;grid-template-rows:68px 1fr;background:linear-gradient(145deg,rgba(247,249,246,.94),rgba(224,232,227,.77));isolation:isolate}
.simulation-viewer:before{content:"";position:absolute;z-index:-1;inset:0;background-image:linear-gradient(rgba(36,70,60,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(36,70,60,.035) 1px,transparent 1px);background-size:38px 38px;mask-image:radial-gradient(circle,#000,transparent 78%)}
.simulation-toolbar{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:1px solid var(--line)}
.simulation-toolbar strong{display:block;font-family:Georgia,serif;font-size:20px;font-weight:500;margin-top:5px}.simulation-actions{display:flex;gap:7px}
.simulation-canvas-wrap{position:relative;min-height:0;overflow:hidden;touch-action:none;cursor:grab}.simulation-canvas-wrap.dragging{cursor:grabbing}
#anatomySimulationCanvas{display:block;width:100%;height:100%;outline:0}
.simulation-loading{position:absolute;inset:0;z-index:5;display:grid;place-content:center;justify-items:center;gap:12px;background:rgba(243,244,239,.82);backdrop-filter:blur(12px);transition:opacity .35s,visibility .35s}
.simulation-loading.ready{opacity:0;visibility:hidden}.simulation-loading span{width:34px;height:34px;border-radius:50%;border:2px solid rgba(35,102,83,.15);border-top-color:var(--accent);animation:simSpin .8s linear infinite}.simulation-loading b{font-size:10px;color:var(--muted);letter-spacing:.08em}
.scene-readout{position:absolute;left:18px;top:18px;min-width:68px;padding:11px 12px;border:1px solid rgba(255,255,255,.7);border-radius:13px;background:rgba(252,252,249,.72);backdrop-filter:blur(12px);box-shadow:0 9px 28px rgba(38,48,42,.08)}
.scene-readout span,.scene-readout small{display:block}.scene-readout span{font-family:Georgia,serif;color:var(--accent);font-size:23px}.scene-readout small{margin-top:2px;color:#7f827d;font-size:7px;font-weight:800;letter-spacing:.13em}
.simulation-hint{position:absolute;left:50%;bottom:17px;transform:translateX(-50%);padding:8px 11px;border-radius:10px;background:rgba(252,252,249,.72);backdrop-filter:blur(10px);color:#777a75;font-size:9px;white-space:nowrap;pointer-events:none}
.simulation-guide h2{font-family:Georgia,serif;font-size:38px;font-weight:500;letter-spacing:-.04em;line-height:1.02;margin:27px 0 0}.simulation-guide .summary{margin-bottom:22px}
.pregnancy-metrics{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin:0 0 24px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--line)}
.pregnancy-metrics div{padding:12px;background:rgba(255,255,255,.62)}.pregnancy-metrics div:last-child{grid-column:1/-1}.pregnancy-metrics span,.pregnancy-metrics strong{display:block}.pregnancy-metrics span{color:#90938e;font-size:8px;text-transform:uppercase;letter-spacing:.1em}.pregnancy-metrics strong{margin-top:5px;font-size:12px}
.simulation-note{line-height:1.5}
.simulation-note a{color:#70867d;text-decoration:underline;text-underline-offset:2px}
.pregnancy-mode .simulation-viewer{background:linear-gradient(145deg,rgba(250,246,243,.96),rgba(238,223,220,.78))}.pregnancy-mode .control-heading output{color:#9a5a62;background:#f3e1e3}.pregnancy-mode .month-dots i.active{background:#b6626b}.pregnancy-mode .scene-readout span{color:#9a5a62}
@keyframes simSpin{to{transform:rotate(360deg)}}

@media(max-width:1100px){
  .experience-nav{margin-left:auto}.simulation-shell{grid-template-columns:230px minmax(390px,1fr)}
  .simulation-guide{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:18px;height:auto}.simulation-guide .detail-head,.simulation-guide h2,.simulation-guide .latin-name,.simulation-guide .summary{grid-column:1}.simulation-guide .pregnancy-metrics,.simulation-guide .functions,.simulation-guide .did-you-know,.simulation-guide .simulation-note{grid-column:2}.simulation-guide .pregnancy-metrics{grid-row:1/3}.simulation-guide .functions{grid-row:3/5}.simulation-guide .did-you-know{align-self:end}.simulation-guide .simulation-note{display:none}
}
@media(max-width:760px){
  body{padding-bottom:0;width:100%;max-width:100vw}.topbar{position:relative;width:calc(100% - 20px);gap:7px}.brand span{font-size:16px}.topbar-actions{position:absolute;right:0;top:12px;margin:0}.topbar-actions .home-link{display:none}.language-picker{width:76px;padding:0 9px}.language-picker .globe{display:inline}.language-picker select{width:44px;font-size:11px}.language-picker select option{font-size:13px}.experience-nav{position:fixed;z-index:45;left:10px;right:10px;bottom:calc(10px + env(safe-area-inset-bottom));width:auto;max-width:none;margin:0!important;overflow:hidden;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));box-shadow:0 12px 35px rgba(32,42,36,.16);background:rgba(249,248,244,.92);backdrop-filter:blur(18px)}.experience-nav button{width:100%;min-width:0;padding:0 2px;font-size:9px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .simulation-mode{padding-bottom:64px}.simulation-shell{width:calc(100vw - 20px);max-width:calc(100vw - 20px);height:auto;min-height:0;margin:8px 10px;display:flex;flex-direction:column}.simulation-shell>.panel{width:100%;max-width:100%;min-width:0;overflow-x:hidden}.simulation-controls{order:2;padding:21px 18px}.simulation-controls h1{font-size:27px}.simulation-controls p,.simulation-guide p{width:100%;max-width:100%;white-space:normal;overflow-wrap:break-word;word-break:normal}.simulation-viewer{order:1;height:62svh;min-height:490px}.simulation-guide{order:3;display:block;padding:24px 20px}.simulation-guide h2{font-size:34px}.simulation-toolbar{height:60px;padding:0 15px}.simulation-toolbar strong{font-size:18px}.simulation-canvas-wrap{min-height:430px}.simulation-hint{bottom:11px}.scene-readout{left:10px;top:10px}.pregnancy-metrics{grid-template-columns:repeat(3,1fr)}.pregnancy-metrics div:last-child{grid-column:auto}.topbar-center{display:none}
}
@media(prefers-reduced-motion:reduce){.simulation-loading span{animation:none}}