:root{color-scheme:light dark;--ink: #0f172a;--canvas: #f1f5f9;--paper: #fff;--white: #fff;--line: rgba(15, 23, 42, .12);--blue: #2563eb;--blue-light: #7fa8f5;--blue-pale: #e7edfd;--blue-deep: #1d4ed8;--coral: #e2624a;--coral-pale: #f7d1c9;--coral-text: #7d463d;--muted: #475569;--muted-2: #5b6870;--logo-2: #8ab6d4;--logo-3: #173f65;--logo-4: #4d88b2;--chip-text: #fff;--ink-solid: #0f172a;--display: "Cabinet Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--body: "Satoshi", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--ease: cubic-bezier(.16, 1, .3, 1);--nav-size: .8rem;--nav-weight: 700;--nav-color: var(--muted);--nav-color-active: var(--blue);--header-page: min(1280px, calc(100% - 56px) );--header-height: 86px;--header-gap: 34px;--header-logo-size: 42px;--header-brand-size: 19px}@media (prefers-color-scheme: dark){:root{--ink: #e7ecf3;--canvas: #0b1220;--paper: #141d2e;--white: #141d2e;--line: rgba(255, 255, 255, .12);--blue: #5b8cff;--blue-light: #8fb4ff;--blue-pale: #1a2540;--blue-deep: #3b63c9;--coral: #f0806a;--coral-pale: #3a2420;--coral-text: #f0c4b5;--muted: #a7b1c2;--muted-2: #94a0ac;--logo-3: #8ab6d4;--logo-4: #6fa8cc;--ink-solid: #1c2940}}@media (max-width: 850px){:root{--header-page: calc(100% - 32px) }}:root{--color-bg: #f7f8fa;--color-surface: #ffffff;--color-surface-2: #f4f6f9;--color-border: #dde3ea;--color-divider: #e2e8ef;--color-text: #0f172a;--color-text-muted: #475569;--color-text-faint: #8b96a3;--color-text-inverse: #f9f8f4;--color-neutral: #93a7a7;--color-neutral-highlight: #e4eaea;--color-accent: #2563eb;--color-accent-strong: #173f65;--color-accent-soft: #7fa8f5;--color-accent-highlight: #e7edfd;--color-accent-glow: rgba(46, 117, 173, .55);--radius-sm: .5rem;--radius-md: .875rem;--radius-lg: 1.25rem;--radius-xl: 1.75rem;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(44, 53, 67, .08);--shadow-md: 0 8px 24px rgba(44, 53, 67, .1);--shadow-lg: 0 20px 60px rgba(44, 53, 67, .16);--text-xs: clamp(.75rem, .7rem + .25vw, .8rem);--text-sm: clamp(.875rem, .8rem + .3vw, .95rem);--text-base: clamp(1rem, .95rem + .2vw, 1.05rem);--text-lg: clamp(1.1rem, 1rem + .6vw, 1.35rem);--text-xl: clamp(1.4rem, 1.2rem + 1vw, 1.9rem);--text-2xl: clamp(1.8rem, 1.4rem + 1.8vw, 2.6rem);--font-display: "Cabinet Grotesk", "Satoshi", system-ui, sans-serif;--font-body: "Satoshi", "Segoe UI", system-ui, sans-serif;--transition-interactive: .22s cubic-bezier(.16, 1, .3, 1);--sheet-height: 0px;--hero-gradient-1: #e9f0fb;--hero-gradient-2: #dde7f4;--error-text: #a15c3a;--alert-border: #c98272;--alert-bg: #fff0ec;--tooltip-text: #eef8fb;--topbar-coral: var(--coral-text);--region-deep-text: var(--coral-text);--region-deep-text-2: var(--coral-text)}@media (prefers-color-scheme: dark){:root{--color-bg: #0b1220;--color-surface: #141d2e;--color-surface-2: #182030;--color-border: #2a3444;--color-divider: #29323f;--color-text: #e7ecf3;--color-text-muted: #c0cad8;--color-text-faint: #aab5c4;--color-neutral: #7d9191;--color-neutral-highlight: #28322f;--color-accent: #5b8cff;--color-accent-strong: #8ab6d4;--color-accent-soft: #8fb4ff;--color-accent-highlight: #1a2540;--hero-gradient-1: #0d1420;--hero-gradient-2: #0f1726;--error-text: #e0a88f;--alert-border: #d99a82;--alert-bg: #3a2018}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:none;text-size-adjust:none;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}body{min-height:100dvh;overflow:hidden;font-family:var(--font-body);font-size:var(--text-base);color:var(--color-text);background:var(--color-bg)}button{cursor:pointer;background:none;border:none;font:inherit;color:inherit}a{color:var(--color-accent-strong)}h1,h2,h3,p,li{text-wrap:pretty}:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px;border-radius:var(--radius-sm)}#app{position:relative;width:100vw;height:100dvh;background:radial-gradient(120% 120% at 50% 20%,var(--hero-gradient-1) 0%,var(--color-bg) 55%,var(--hero-gradient-2) 100%);overflow:hidden}#scene-canvas{position:absolute;top:0;left:0;width:100%;height:100%;display:block;touch-action:none;cursor:grab}.topbar{position:absolute;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;padding:1.25rem 1.75rem;z-index:20;pointer-events:none;gap:.9rem;transition:right .48s cubic-bezier(.16,1,.3,1)}body.panel-open .topbar{right:min(420px,92vw)}body.panel-open .topbar-product-links{display:none}.brand{display:flex;align-items:center;gap:.55rem;pointer-events:auto;color:inherit;text-decoration:none;border-radius:var(--radius-sm)}.brand:focus-visible{outline:2px solid var(--color-accent);outline-offset:5px}.atlas-mark{width:30px;height:30px;overflow:visible;flex:none}.atlas-mark path{fill:var(--color-accent)}.atlas-mark path:nth-child(2){fill:var(--logo-2)}.atlas-mark path:nth-child(3){fill:var(--color-accent-strong)}.atlas-mark path:nth-child(4){fill:var(--logo-4);opacity:.75}.brand-name{font-family:var(--font-display);font-weight:700;font-size:var(--text-lg);color:var(--color-text);letter-spacing:-.01em}.brand-tag{font-size:var(--text-xs);color:var(--color-text-faint);background:var(--color-surface);border:1px solid var(--color-border);padding:.15rem .55rem;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.06em}.breadcrumb{display:flex;align-items:center;gap:.4rem;pointer-events:auto;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-full);padding:.5rem .9rem;box-shadow:var(--shadow-sm);font-size:var(--text-sm);flex:1 1 auto;min-width:0;max-width:min(70vw,720px);overflow-x:auto;scrollbar-width:none}body.panel-open .breadcrumb{max-width:min(100%,760px)}.breadcrumb::-webkit-scrollbar{display:none}.breadcrumb button{color:var(--color-text-muted);white-space:nowrap;padding:.15rem .3rem;border-radius:var(--radius-sm);transition:color var(--transition-interactive),background var(--transition-interactive)}.breadcrumb button:hover{color:var(--color-accent-strong);background:var(--color-accent-highlight)}.breadcrumb button[aria-current=true]{color:var(--color-text);font-weight:600}.breadcrumb .sep{color:var(--color-text-faint);font-size:var(--text-xs)}.breadcrumb[hidden]{display:none}.tissue-selector{position:absolute;top:78px;left:1.75rem;right:1.75rem;z-index:19;display:flex;justify-content:flex-start;gap:.35rem;pointer-events:auto;transition:right .48s cubic-bezier(.16,1,.3,1);flex-wrap:wrap;row-gap:.4rem}.tissue-selector[hidden]{display:none}body.panel-open .tissue-selector{right:calc(min(420px,92vw) + 1.75rem)}.tissue-selector-context{align-self:center;margin-right:.2rem;color:var(--color-text-faint);font-size:var(--text-2xs);font-weight:800;letter-spacing:.08em;text-transform:uppercase;white-space:nowrap}.tissue-selector-status{align-self:center;padding:.45rem .75rem;border:1px solid var(--color-border);border-radius:var(--radius-full);background:color-mix(in srgb,var(--color-surface) 92%,transparent);color:var(--color-text-muted);font-size:var(--text-xs);font-weight:700;white-space:nowrap}.tissue-selector-status[hidden]{display:none}.tissue-selector[aria-busy=true] button{opacity:.58;cursor:progress}.anatomy-region-options{display:contents}.anatomy-view-options{display:flex;flex-wrap:wrap;gap:.35rem;flex-basis:100%}.tissue-selector.systems-mode .anatomy-region-options [data-region-select],.anatomy-view-options[hidden],.mobile-anatomy-select{display:none}.tissue-selector button{flex:0 0 auto;min-height:38px;padding:.48rem .85rem;border:1px solid var(--color-border);border-radius:var(--radius-full);background:color-mix(in srgb,var(--color-surface) 88%,transparent);color:var(--color-text-muted);box-shadow:var(--shadow-sm);font-size:var(--text-xs);font-weight:700;backdrop-filter:blur(14px);transition:color var(--transition-interactive),border-color var(--transition-interactive),background var(--transition-interactive),transform var(--transition-interactive)}.tissue-selector button:hover{color:var(--color-text);border-color:var(--color-accent-soft);transform:translateY(-1px)}.tissue-selector button:disabled:hover{transform:none}.tissue-selector .region-coming-soon{display:inline-flex;align-items:center;gap:.45rem;opacity:.65;cursor:default}.region-coming-soon small{font-size:.56rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase}.tissue-selector button[aria-pressed=true]{color:#fff;border-color:var(--color-accent);background:var(--color-accent)}.tissue-selector button:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.hint{position:absolute;left:50%;bottom:6.5rem;transform:translate(-50%);z-index:15;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-full);padding:.7rem 1.4rem;box-shadow:var(--shadow-sm);font-size:var(--text-sm);color:var(--color-text-muted);text-align:center;animation:hint-float 3.2s ease-in-out infinite;transition:opacity var(--transition-interactive);pointer-events:none}.hint strong{color:var(--color-accent-strong);font-weight:600}.hint.is-hidden{opacity:0}@keyframes hint-float{0%,to{transform:translate(-50%) translateY(0)}50%{transform:translate(-50%) translateY(-6px)}}.recenter-btn{position:absolute;left:1.25rem;bottom:1.25rem;z-index:22;width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--color-surface);color:var(--color-accent-strong);box-shadow:var(--shadow-md);border:1px solid var(--color-border);opacity:0;transform:scale(.85);pointer-events:none;transition:opacity .22s ease,transform .22s cubic-bezier(.16,1,.3,1),bottom var(--transition-interactive)}.recenter-btn.is-visible{opacity:1;transform:scale(1);pointer-events:auto}.recenter-btn:active{transform:scale(.92)}.twod-view-link{position:absolute;right:1.25rem;bottom:1.25rem;z-index:22;display:flex;flex-direction:column;align-items:flex-end;gap:.15rem;padding:.55rem .9rem;border-radius:var(--radius-lg, 14px);background:var(--color-surface);border:1px solid var(--color-border);box-shadow:var(--shadow-md, var(--shadow-sm));text-decoration:none;text-align:right;transition:transform var(--transition-interactive),box-shadow var(--transition-interactive)}.twod-view-link:hover,.twod-view-link:focus-visible{transform:translateY(-2px);box-shadow:0 8px 20px #0f172a2e}.twod-view-link span{font-size:11px;color:var(--color-text-muted)}.twod-view-link b{font-size:var(--text-sm);color:var(--color-accent-strong);font-weight:700;display:flex;align-items:center;gap:.3rem}body.panel-open .twod-view-link{display:none}@media (max-width: 480px){.twod-view-link span{display:none}.twod-view-link{padding:.5rem .75rem}}.mobile-detail-peek,.panel-handle{display:none}.tooltip{position:absolute;z-index:30;max-width:240px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:.75rem .9rem;box-shadow:var(--shadow-md);pointer-events:none;transform:translate(18px,24px);transition:opacity .14s ease}.tooltip-name{font-family:var(--font-display);font-weight:700;font-size:var(--text-sm);color:var(--color-text);margin-bottom:.15rem}.tooltip-desc{font-size:var(--text-xs);color:var(--color-text-muted);line-height:1.4}.tooltip-cta{font-size:var(--text-xs);color:var(--color-accent-strong);font-weight:600;margin-top:.35rem}.selected-callout{position:absolute;z-index:31;max-width:260px;background:var(--color-accent-strong);color:var(--chip-text);border-radius:var(--radius-md);padding:.4rem .7rem;box-shadow:var(--shadow-md);pointer-events:none;transform:translate(14px,-12px);opacity:0;transition:opacity .26s ease}.selected-callout.is-visible{opacity:1}.selected-callout:before{content:"";position:absolute;left:-5px;bottom:-5px;width:10px;height:10px;border-radius:50%;background:var(--color-accent-strong);box-shadow:0 0 0 2px #ffffff59}.selected-callout-name{font-family:var(--font-display);font-weight:800;font-size:var(--text-sm);line-height:1.2}@media (hover: none),(pointer: coarse){.tooltip{display:none!important}.selected-callout{max-width:min(260px,calc(100vw - 32px));padding:.38rem .65rem;border-radius:999px;box-shadow:0 10px 24px #06121e38}}.panel{position:absolute;top:0;right:0;height:100%;width:min(420px,92vw);background:var(--color-surface);box-shadow:var(--shadow-lg);z-index:25;padding:5.5rem 1.75rem 1.75rem;overflow-y:auto;transform:translate(100%);transition:transform .48s cubic-bezier(.16,1,.3,1);border-left:1px solid var(--color-border);box-sizing:border-box}.panel.is-open{transform:translate(0)}.panel-scroll,#panel-content{width:100%;min-width:0;max-width:100%}#panel-content{overflow-x:hidden}#panel-content p,#panel-content li,#panel-content dd,#panel-content strong,#panel-content button{min-width:0;max-width:100%;overflow-wrap:anywhere;word-break:normal}.panel-back{display:inline-flex;align-items:center;gap:.35rem;font-size:var(--text-sm);color:var(--color-text-muted);margin-bottom:1.25rem;padding:.4rem .7rem;border-radius:var(--radius-full);transition:background var(--transition-interactive),color var(--transition-interactive)}.panel-back:hover{background:var(--color-accent-highlight);color:var(--color-accent-strong)}.panel-eyebrow{font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.08em;color:var(--color-accent-strong);font-weight:700;margin-bottom:.4rem}.panel-title{font-family:var(--font-display);font-weight:800;font-size:var(--text-xl);color:var(--color-text);letter-spacing:-.01em;margin-bottom:.4rem}.panel-subtitle{font-size:var(--text-base);color:var(--color-text-muted);margin-bottom:1.5rem}.fine-detail-note{display:flex;align-items:center;gap:.5rem;font-size:var(--text-xs);color:var(--color-text-muted);margin-top:-.6rem;margin-bottom:1.1rem}.fine-detail-note.is-error{color:var(--error-text)}.fine-detail-spinner{width:11px;height:11px;flex:none;border-radius:50%;border:2px solid var(--color-border);border-top-color:var(--color-accent-strong);animation:spin .8s linear infinite}.panel-category{display:inline-block;font-size:var(--text-xs);font-weight:700;color:var(--color-accent-strong);background:var(--color-accent-highlight);padding:.3rem .7rem;border-radius:var(--radius-full);margin-bottom:1rem}.pain-options{display:flex;flex-direction:column;gap:.65rem;list-style:none}.pain-btn{display:flex;align-items:center;justify-content:space-between;width:100%;text-align:left;padding:.95rem 1.15rem;border:1.5px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--text-base);font-weight:500;color:var(--color-text);background:var(--color-surface-2);transition:border-color var(--transition-interactive),background var(--transition-interactive),transform var(--transition-interactive)}.pain-btn:hover{border-color:var(--color-accent);background:var(--color-accent-highlight);transform:translate(2px)}.pain-btn .arrow{color:var(--color-text-faint);transition:transform var(--transition-interactive),color var(--transition-interactive)}.pain-btn:hover .arrow{color:var(--color-accent-strong);transform:translate(3px)}.panel-divider{height:1px;background:var(--color-divider);margin:1.25rem 0;border:none}.panel-section-label{font-family:var(--font-display);font-weight:700;font-size:var(--text-sm);color:var(--color-text);margin-bottom:.75rem}.conditions-list{list-style:none;display:flex;flex-direction:column;gap:.55rem;margin-bottom:1.5rem}.conditions-list li{display:flex;align-items:flex-start;gap:.6rem;font-size:var(--text-sm);color:var(--color-text-muted);line-height:1.5}.conditions-list li:before{content:"";flex-shrink:0;width:6px;height:6px;margin-top:.5em;border-radius:50%;background:var(--color-accent)}.btn{display:flex;align-items:center;justify-content:center;width:100%;padding:.9rem 1.2rem;border-radius:var(--radius-md);font-size:var(--text-sm);font-weight:700;transition:background var(--transition-interactive),border-color var(--transition-interactive),transform .12s ease}.btn:active{transform:scale(.98)}.btn-primary{background:var(--color-accent);color:var(--chip-text);margin-bottom:.7rem}.btn-primary:hover{background:var(--color-accent-strong)}.btn-secondary{background:var(--color-surface);color:var(--color-accent-strong);border:1.5px solid var(--color-accent-soft)}.btn-secondary:hover{background:var(--color-accent-highlight)}.stub-note{font-size:var(--text-xs);color:var(--color-text-faint);text-align:center;margin-top:.85rem}.structure-list-hint{font-size:var(--text-sm);color:var(--color-text-muted);background:var(--color-surface-2);border:1px dashed var(--color-border);border-radius:var(--radius-md);padding:.85rem 1rem;margin-top:.5rem}.loader{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;background:var(--color-bg);z-index:50;transition:opacity .42s ease,visibility .42s ease}.loader.is-hidden{opacity:0;visibility:hidden;pointer-events:none}.loader p{font-size:var(--text-sm);color:var(--color-text-muted);font-variant-numeric:tabular-nums;transition:opacity .2s ease}.loader-mark{width:44px;height:44px;animation:loader-pulse 1.8s ease-in-out infinite}@keyframes loader-pulse{0%,to{opacity:.55;transform:scale(.94)}50%{opacity:1;transform:scale(1)}}@media (prefers-reduced-motion: reduce){.loader-mark{animation:none;opacity:1}}.loader-progress{width:160px;height:4px;border-radius:var(--radius-full);background:var(--color-border);overflow:hidden}.loader-progress[hidden]{display:none}.loader-progress-fill{width:0%;height:100%;border-radius:var(--radius-full);background:var(--color-accent);transition:width .22s ease}.credits{position:absolute;bottom:0;left:0;right:0;z-index:15;text-align:center;padding:.6rem 1rem;pointer-events:none}@media (prefers-color-scheme: dark){.credits{background:linear-gradient(to bottom,transparent,rgba(7,13,24,.88))}}.credits details{display:inline-block;max-width:min(1120px,calc(100vw - 2rem));pointer-events:auto;text-align:left}.credits summary{width:max-content;margin-left:auto;padding:.38rem .68rem;border:1px solid var(--color-border);border-radius:999px;background:color-mix(in srgb,var(--color-surface) 90%,transparent);color:var(--color-text-muted);font-size:var(--text-xs);cursor:pointer;list-style:none}.credits summary::-webkit-details-marker{display:none}.credits summary:after{content:" +";color:var(--color-accent-strong)}.credits details[open] summary:after{content:" −"}.credits details[open] p{margin-top:.45rem;padding:.55rem .7rem;border:1px solid var(--color-border);border-radius:var(--radius-md);background:color-mix(in srgb,var(--color-surface) 94%,transparent);box-shadow:var(--shadow-md)}.credits p{font-size:var(--text-xs);color:var(--color-text-faint);pointer-events:auto}.credits a{color:var(--color-text-muted);text-decoration:underline;text-underline-offset:2px}.credits a:hover{color:var(--color-accent-strong)}@media (max-width: 720px){.topbar{padding:.75rem .85rem}.brand-tag{display:none}.breadcrumb{max-width:calc(100vw - 82px);padding:.4rem .7rem}.panel{inset:auto 0 0;width:100%;max-width:100%;display:flex;flex-direction:column;overflow:hidden;height:25vh;height:25dvh;max-height:88vh;max-height:88dvh;border-left:none;border-top:1px solid var(--color-border);border-radius:var(--radius-xl) var(--radius-xl) 0 0;padding:0;transform:translateY(100%);transition:transform .48s cubic-bezier(.16,1,.3,1),height .26s cubic-bezier(.16,1,.3,1)}.panel.is-open{transform:translateY(0)}.panel.is-dragging{transition:transform .48s cubic-bezier(.16,1,.3,1)}.panel-handle{display:flex;align-items:center;justify-content:center;flex:none;height:36px;touch-action:none;cursor:grab}.panel-handle:before{content:"";width:44px;height:5px;border-radius:var(--radius-full);background:var(--color-border);transition:background 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