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.tree-group{border-left:1px solid #36515f;margin-left:7px}.tree-group summary{margin-left:-1px}.tree-leaf{position:relative}.tree-leaf:before{content:"";position:absolute;left:0;top:50%;width:12px;border-top:1px solid #36515f}.asset-visual canvas{touch-action:none}
/* Application cases give simulation its anatomical and procedural context. */
.case-thumb{display:block;isolation:isolate}.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}.case-thumb:hover img{transform:scale(1.035)}.case-thumb-action{position:absolute;right:15px;top:15px;display:grid;place-items:center;width:38px;height:38px;background:#cdff74;color:#172018;border-radius:50%;font-size:1.4rem}.case-facts{margin-top:28px;display:grid;gap:20px}.case-facts p{font-size:.9rem}.case-facts strong{display:block;margin-bottom:6px;font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:#243944}.case-availability{font-size:.8rem;margin-top:25px;color:#718590}.case-brief{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;border-top:1px solid #cad6de;padding:25px 0 35px}.case-brief span{font-size:.72rem;letter-spacing:.08em;color:#6b7e8b}.case-brief p{font-size:.92rem;color:#415c6c;margin-top:8px}.procedure-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;min-height:550px}.procedure-stage{position:relative;min-height:550px;background:#203239}.procedure-stage canvas{position:absolute;width:100%;height:100%;display:block;touch-action:none}.procedure-steps{padding:26px 20px;background:#162731;border-left:1px solid #3c5361}.procedure-steps .eyebrow{font-size:.7rem;color:#99b2c1;margin:0 10px 22px}.procedure-step{display:flex;width:100%;gap:14px;text-align:left;padding:17px 12px;border:1px solid transparent;background:transparent;color:#9fb3c1;border-radius:4px;margin:3px 0}.procedure-step span{font:14px monospace;color:#a7ba96;padding-top:3px}.procedure-step strong{font-size:.92rem;font-weight:500;display:block}.procedure-step small{font-size:.76rem;color:inherit;display:block;margin-top:5px;line-height:1.45}.procedure-step[aria-pressed=true]{background:#324d3c;border-color:#668e65;color:#e4ffd4}.procedure-step[aria-pressed=true] span{color:#d5ff94}.procedure-step:hover{border-color:#668e65}.procedure-overlay{position:absolute;bottom:20px;left:24px;color:#eff7fc;background:#152a33dc;padding:14px 18px;max-width:calc(100% - 48px);z-index:3;pointer-events:none}.procedure-overlay strong{display:block;font-size:.95rem;font-weight:500}.procedure-overlay span{font-size:.76rem;color:#b4c9d7}.procedure-controls{padding:18px 24px;display:flex;gap:16px;align-items:center;flex-wrap:wrap;border-top:1px solid #344a57;background:#1b2e39}.procedure-controls label{display:flex;gap:8px;align-items:center;font-size:.84rem;margin-right:auto}.procedure-controls input{accent-color:#cdff74}.procedure-controls .button[aria-pressed=true]{background:#ceff77;border-color:#ceff77;color:#172018}.procedure-stage .busy{position:absolute;inset:0;background:#172b35dc;z-index:4;padding:35px}.case-caption{color:#b2c6d4;font-size:.77rem;max-width:70ch}.mode-tabs{flex-wrap:wrap}
@media(max-width:800px){.case-brief{grid-template-columns:1fr;gap:18px}.procedure-layout{grid-template-columns:1fr}.procedure-stage{min-height:400px}.procedure-steps{border-left:0;border-top:1px solid #3c5361;padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:6px}.procedure-steps .eyebrow{grid-column:1/-1}.procedure-step{margin:0;padding:13px 10px;gap:10px}.procedure-controls{padding:16px;gap:12px}.procedure-controls .button{font-size:.8rem;padding:10px 12px}.procedure-overlay{left:14px;bottom:14px;max-width:calc(100% - 28px)}}
@media(max-width:480px){.procedure-steps{grid-template-columns:1fr}.procedure-stage{min-height:370px}.case-thumb .visual-label{font-size:.68rem}.procedure-controls label{width:100%}}

/* Compact right-hand anatomy rail; preserve the established ink / lime palette. */
.hero-visual{position:absolute;right:3%;top:25px;bottom:100px;width:51%;max-width:860px;max-height:750px;z-index:1}
.hero-visual .hero-scene{inset:0 8.125rem 65px 0;width:auto;height:auto;max-height:none}
.hero-visual .coordinate{left:24px;right:auto;top:20px}
.hero-model-picker{position:absolute;right:0;top:calc(50% - 30px);transform:translateY(-50%);width:6.625rem;z-index:4}
.hero-model-tags{display:flex;flex-direction:column;gap:10px}
.hero-model-tags button{background:#111a20;color:#b5c3cc;border:1px solid #4b5a64;border-radius:4px;padding:12px 14px;font-size:.875rem;min-height:44px;line-height:1.25;text-align:left;transition:background .16s,border-color .16s,color .16s}
.hero-model-tags button:hover{background:#233039;color:#f4f7fa;border-color:#88979f}
.hero-model-tags button[aria-pressed=true]{background:#ceff77;border-color:#ceff77;color:#111a20}
.hero-model-tags button[data-loading=true]{border-color:#ceff77;box-shadow:inset 0 -3px #ceff77}
.hero-model-tags button:focus-visible{outline:2px solid #d4fa9e;outline-offset:4px}
.hero-model-tags button:disabled{opacity:.55;cursor:not-allowed}
.hero-model-status{min-height:1.5em;margin:10px 0 0;color:#b5c3cc;font-size:.8125rem;line-height:1.5}
.hero-visual .scene-note{left:24px;right:8.125rem;bottom:0;font-size:.75rem;line-height:1.5}
@media(min-width:1700px){.hero-visual{right:calc((100vw - 1580px)/2);width:790px}}
@media(max-width:1100px){.hero-visual{right:24px;width:48%}.hero-visual .hero-scene{right:6.875rem}.hero-model-picker{width:6rem}.hero-visual .scene-note{left:12px;right:6.25rem}}
@media(max-width:800px){.hero{display:flex;flex-direction:column}.hero .wrap{order:0;padding:50px 0 24px}.hero-visual{order:1;position:relative;inset:auto;width:calc(100% - 48px);max-width:none;height:480px;max-height:none;margin:0 24px 28px}.hero-visual .hero-scene{inset:0 7.5rem 65px 0}.hero-model-picker{width:6.25rem}.hero-visual .scene-note{left:0;right:7.1875rem;bottom:0}}
@media(max-width:480px){.hero-visual{width:calc(100% - 32px);height:430px;margin:0 16px 24px}.hero-visual .hero-scene{right:5.5rem}.hero-model-picker{width:4.875rem}.hero-model-tags{gap:8px}.hero-model-tags button{padding:11px 9px;min-height:43px}.hero-visual .scene-note{right:5.3125rem}}
/* Molecular scale, locomotion and a moving medical magnifier. */
.cinematic-intro{padding:28px 32px 42px;background:#111a20;color:#f4f7fa}
.intro-film{position:relative;isolation:isolate;max-width:1680px;height:min(780px,calc(100svh - 150px));min-height:500px;margin:auto;border-radius:22px;overflow:hidden;background:#111a20}
.intro-atmosphere,.intro-stage,.intro-shade,.intro-embryo,.intro-cell-fallback,.intro-lens-backdrop{position:absolute;inset:0;pointer-events:none}
.intro-atmosphere{background:radial-gradient(ellipse at 48% 45%,#26404388,transparent 64%),radial-gradient(ellipse at 15% 90%,#32584625,transparent 48%)}
.intro-cell-fallback{display:grid;place-items:center;opacity:0;transition:opacity .3s}
.intro-cell-fallback svg{height:58%;width:auto;max-width:70%;opacity:.55}
.intro-film[data-state=pending] .intro-cell-fallback,.intro-film[data-state=loading] .intro-cell-fallback{opacity:1}
.intro-film.has-stage .intro-cell-fallback{visibility:hidden}
.intro-stage{opacity:0;transition:opacity .6s ease}
.intro-stage.is-ready{opacity:1}
.intro-stage canvas{display:block;width:100%;height:100%}
.intro-embryo{opacity:0;z-index:2;will-change:transform,opacity;transform-origin:50% 46%}
.intro-embryo img{width:100%;height:100%;object-fit:contain;mix-blend-mode:screen;mask-image:radial-gradient(ellipse at center,#000 27%,#000c 48%,transparent 75%)}
.intro-lens-backdrop{background-position:center;background-repeat:no-repeat;background-size:cover;filter:blur(12px) saturate(.65);opacity:0;z-index:2;transition:background-image .5s;mask-image:radial-gradient(ellipse at center,#000,transparent 76%)}
.intro-magnifier{position:absolute;left:50%;top:43%;width:clamp(230px,48vmin,450px);aspect-ratio:1;opacity:0;z-index:4;pointer-events:none;will-change:transform,opacity;transform:translate(-50%,-50%)}
.lens-ring{position:absolute;inset:0;border-radius:50%;padding:9px;background:linear-gradient(125deg,#e3ebe9 0%,#73847e 16%,#253b39 34%,#a6b9af 53%,#344a45 69%,#d5e7d5 83%,#35504a 100%);box-shadow:0 0 0 1px #c4e4c75c,0 2px 0 2px #071211,0 26px 60px #0009,inset 0 0 3px 2px #e6ffdd88;z-index:2}
.lens-glass{position:relative;width:100%;height:100%;border-radius:50%;overflow:hidden;isolation:isolate;background:#061015;box-shadow:inset 0 0 25px #97c7b94d}
.lens-image{position:absolute;inset:0;display:block;width:100%;height:100%;object-fit:contain;opacity:0;will-change:opacity,transform}
.lens-image[data-lens="0"],.lens-image[data-lens="1"]{object-fit:cover}
.lens-model{position:absolute;inset:0;opacity:0;z-index:2}
.lens-model canvas{display:block;width:100%;height:100%}
.lens-reflection{position:absolute;inset:0;border-radius:50%;pointer-events:none;z-index:3;box-shadow:inset 3px 4px 8px #ecffd72e,inset -6px -8px 19px #020909a1;background:linear-gradient(135deg,#e6fff518 0%,transparent 32%,transparent 66%,#c3eeff0a 78%,transparent)}
.lens-reflection:before{content:"";position:absolute;inset:3% 5% 62% 10%;border-top:2px solid #f6fff962;border-radius:50%;transform:rotate(-30deg)}
.lens-reflection:after{content:"";position:absolute;inset:1%;border-radius:50%;border:1px solid #cef4dd32}
.lens-handle{position:absolute;left:81%;top:82%;width:12%;height:52%;border-radius:12px 12px 24px 24px;transform-origin:50% 0;transform:rotate(-38deg);background:linear-gradient(90deg,#0c201d,#2c4d42 22%,#627a66 35%,#1e392f 64%,#071711);border:1px solid #6d8b79;box-shadow:12px 16px 22px #0006;z-index:1}
.lens-handle:before{content:"";display:block;height:16%;margin:6% -3%;background:linear-gradient(90deg,#526b60,#d4e3cf 40%,#344c3f);border-radius:4px}
.lens-caption{position:absolute;left:0;top:calc(100% + 25px);width:100%;text-align:center;color:#e2f3e8;font:500 clamp(1rem,2vw,1.55rem)/1.2 Atlas,Arial,sans-serif;letter-spacing:.06em}
.intro-chapter{position:absolute;bottom:62px;left:45px;right:40px;font:italic clamp(1.5rem,2.7vw,2.7rem)/1.1 Georgia,serif;letter-spacing:-.03em;color:#e8f2e7;opacity:0;z-index:5;pointer-events:none}
.intro-shade{background:radial-gradient(ellipse at center,#111a2088,transparent 68%);opacity:0;transition:opacity 1.1s;z-index:6}
.intro-copy{position:absolute;inset:0;z-index:7;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px;text-align:center;pointer-events:none}
.intro-copy h1{display:flex;align-items:baseline;justify-content:center;gap:.24em;white-space:nowrap;font-size:clamp(1.75rem,7.2vw,8rem);line-height:1.08;letter-spacing:-.06em;font-weight:400}
.intro-copy h1 em{color:#d4fa9e;font-style:italic;letter-spacing:-.055em}
.intro-copy p{font-size:clamp(.95rem,1.5vw,1.4rem);line-height:1.5;color:#dce6eb;margin:24px 0 32px;max-width:44ch}
.intro-copy .button{pointer-events:auto;font-weight:500;padding:13px 25px}
.intro-copy h1,.intro-copy p,.intro-copy .button{opacity:0;transform:translateY(20px);visibility:hidden;transition:none}
.intro-film[data-state=complete] .intro-copy h1,.intro-film[data-state=complete] .intro-copy p,.intro-film[data-state=complete] .intro-copy .button{opacity:1;transform:none;visibility:visible;transition:none}
.intro-film[data-state=complete] .intro-stage{opacity:.4}
.intro-film[data-state=complete] .intro-shade{opacity:1}
.intro-film[data-state=playing] .intro-copy h1,.intro-film[data-state=playing] .intro-copy p,.intro-film[data-state=playing] .intro-copy .button,.intro-film[data-state=loading] .intro-copy h1,.intro-film[data-state=loading] .intro-copy p,.intro-film[data-state=loading] .intro-copy .button{visibility:hidden;transition:none}
.intro-playback{position:absolute;right:25px;bottom:23px;z-index:8;display:flex;gap:8px}
.intro-control{color:#dce6eb;background:#111a20cc;border:1px solid #4b5a64;border-radius:4px;font-size:.8125rem;padding:8px 14px;min-height:40px}
.intro-control:hover,.intro-control[aria-pressed=true]{background:#233039;border-color:#ceff77}
.intro-control[hidden]{display:none}
/* Compact editorial typography for the anatomy introduction. */
.hero-title{font-family:Arial,Helvetica,sans-serif;font-size:clamp(3rem,5vw,5.75rem);font-weight:700;font-style:normal;letter-spacing:-.045em;line-height:1.06;max-width:660px}
.hero-title>span{display:block}
.hero-title-accent{color:#d4fa9e}
.hero .lead{font-family:Georgia,'Times New Roman',serif;font-size:clamp(1.25rem,1.85vw,1.85rem);font-weight:400;line-height:1.45;letter-spacing:-.015em;max-width:40ch;margin-top:28px}
@media(min-width:801px){
 .hero{--hero-gutter:clamp(32px,5vw,96px);--hero-padding:clamp(40px,6svh,80px);display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);align-items:center;gap:clamp(24px,2vw,48px);min-height:100svh;padding:var(--hero-padding) var(--hero-gutter)}
 .hero .wrap{grid-column:1;grid-row:1;width:100%;min-width:0;margin:0;padding:0}
 .hero-copy{width:100%;max-width:none}
 .hero-title{max-width:none}
 .hero-visual{grid-column:2;grid-row:1;position:relative;inset:auto;width:100%;max-width:none;height:calc(100svh - 2 * var(--hero-padding));min-height:400px;max-height:none}
 .hero-model-picker{top:50%}
}
@media(max-width:800px){.hero .lead{max-width:42ch}.hero .actions{margin-top:28px}}
.hero-visual .hero-scene{bottom:0}
.blog-placeholder{min-height:68vh;padding-top:60px;padding-bottom:100px}
.blog-placeholder h1{margin-top:60px;font-size:clamp(3rem,6vw,6rem)}
.blog-body{min-height:180px}
@media(max-width:800px){.cinematic-intro{padding:18px 20px 26px}.intro-film{height:calc(85svh - 100px);min-height:470px;border-radius:14px}.intro-copy{padding:20px}.intro-copy p{max-width:27ch}.intro-chapter{bottom:75px;left:24px}.hero-title{font-size:clamp(2.4rem,7vw,4rem)}}
@media(max-width:650px){.intro-embryo{inset:-2% -22%}.intro-chapter{font-size:1.4rem;top:24px;bottom:auto}.intro-magnifier{top:44%;width:clamp(210px,62vw,300px)}.lens-caption{font-size:.95rem}}
@media(max-width:480px){.cinematic-intro{padding:12px 12px 24px}.intro-film{height:74svh;min-height:440px}.intro-copy{padding:14px}.intro-copy h1{font-size:7.25vw;gap:.2em}.intro-copy p{font-size:.95rem;margin:18px 0 25px}.intro-playback{right:14px;bottom:14px}.intro-control{padding:8px 11px}.intro-chapter{left:20px;top:22px;bottom:auto}.hero-title{font-size:clamp(1.9rem,9.2vw,2.75rem)}}
@media(prefers-reduced-motion:reduce){.intro-film[data-state=complete] .intro-copy h1,.intro-film[data-state=complete] .intro-copy p,.intro-film[data-state=complete] .intro-copy .button{opacity:1!important;transform:none!important;visibility:visible!important;transition:none!important}}

/* Photographic action frames replace the previous procedural human figures. */
.intro-photographic{position:absolute;inset:0;z-index:3;pointer-events:none;opacity:0;mask-image:radial-gradient(ellipse at 50% 46%,#000 28%,#000 48%,transparent 76%)}
.life-photographic-canvas{display:block;width:100%;height:100%}
.intro-chapter{font-size:clamp(1.2rem,2.2vw,2rem);bottom:48px}
@media(max-width:650px){.intro-photographic{inset:0 -18%}.intro-chapter{top:23px;bottom:auto;font-size:1.2rem}}

/* Scientific cover film: native video keeps shader preparation off the opening. */
.native-intro{background:#0c1b23}
.intro-video,.film-prelude,.film-ending{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.intro-video{z-index:2;opacity:0;transition:opacity .16s ease}
.native-intro.has-video-frame .intro-video{opacity:1}
.film-prelude{overflow:hidden;background:radial-gradient(ellipse,#245353 0%,#132b35 45%,#111a20 80%);z-index:1}
.film-prelude img{width:100%;height:100%;object-fit:cover;animation:cover-breathe 2.8s ease-in-out infinite alternate;transform-origin:48% 50%}
.prelude-orbit{position:absolute;left:50%;top:50%;width:36%;aspect-ratio:1;border:1px solid #b7dec02a;border-left-color:#dcf6b894;border-radius:50%;animation:cover-orbit 2.2s linear infinite}
@keyframes cover-breathe{from{transform:scale(1.01) translateX(-.5%);filter:brightness(.82)}to{transform:scale(1.11) translateX(.5%);filter:brightness(1.02)}}
@keyframes cover-orbit{from{transform:translate(-50%,-50%) rotate(0)}to{transform:translate(-50%,-50%) rotate(360deg)}}
.native-intro.is-paused .film-prelude *{animation-play-state:paused}
.native-intro.has-video-frame .film-prelude{visibility:hidden}
.film-ending{z-index:1;opacity:0;object-position:50% 50%}
.native-intro[data-state=complete] .film-ending{opacity:1}
.native-intro[data-state=complete] .intro-video,.native-intro[data-state=complete] .film-prelude{opacity:0;visibility:hidden}
.native-intro[data-state=complete] .intro-shade{background:linear-gradient(90deg,#071a2475,#0b202a66,#071a2475);opacity:1}
.native-intro.reveal-copy .intro-copy h1{animation:film-copy-in .65s .05s both}
.native-intro.reveal-copy .intro-copy p{animation:film-copy-in .65s .15s both}
.native-intro.reveal-copy .intro-copy .button{animation:film-copy-in .65s .25s both}
@keyframes film-copy-in{from{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:650px){.native-intro{width:100%;height:auto;aspect-ratio:4/5;min-height:420px;max-height:70svh}.intro-video{object-fit:contain;background:#111a20}.film-prelude img{object-fit:cover}.native-intro .intro-copy h1{font-size:7.25vw}.native-intro .intro-copy p{max-width:27ch}.film-ending{object-position:50% 50%}}

/* Preserve the complete Leonardo drawing at wide desktop aspect ratios. */
.native-intro[data-phase="Vitruvian Man"] .intro-video{object-fit:contain;background:#111a20}
.native-intro[data-state=complete] .intro-shade{background:radial-gradient(ellipse at 50% 53%,#07161de0 0%,#07161da8 38%,#07161d32 76%);opacity:1}
.native-intro .intro-copy h1{ text-shadow:0 2px 24px #06101799 }

/* A visible hosted playground entry, with an honest unpublished fallback. */
.hf-space-card{padding:30px 34px;margin-bottom:32px;border:1px solid #c7d1d8;border-radius:8px;background:#edf2e8;scroll-margin-top:24px}
.hf-space-brand{display:flex;align-items:center;gap:16px;margin-bottom:18px}
.hf-space-mark{display:grid;place-items:center;flex:0 0 44px;width:44px;height:44px;border:1px solid #d9c783;border-radius:12px;background:#ffe8a6;color:#443b21;font:700 1rem/1 Arial,Helvetica,sans-serif;letter-spacing:-.035em}
.hf-space-card h2{font:700 clamp(1.4rem,2.2vw,2rem)/1.2 Arial,Helvetica,sans-serif;letter-spacing:-.035em}
.hf-space-status{color:#5f7067;font-size:.85rem;margin-top:5px}
.hf-space-card>p{color:#52665e;max-width:75ch}
.hf-space-card .actions{align-items:center;margin-top:22px;gap:24px}
.hf-space-card [hidden]{display:none!important}
.space-cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:16px;flex-shrink:0}
@media(min-width:801px) and (max-width:1200px){.site-header nav{gap:14px;font-size:.8rem}.site-header .button.small{padding:11px 13px;gap:12px}.site-header{gap:16px}.site-header .brand{font-size:1.4rem}}
@media(max-width:600px){.hf-space-card{padding:24px 20px}.hf-space-card .actions{gap:16px}.hf-space-brand{align-items:flex-start}.space-cta-actions{margin-top:24px}.space-cta-actions .button{margin-top:0}}
@media(max-width:1000px){.site-header .menu-toggle{display:block}.site-header nav{display:none;position:absolute;top:100%;left:0;right:0;background:#17252e;padding:25px;flex-direction:column;align-items:stretch;color:#fff;font-size:.87rem}.site-header nav.open{display:flex}}