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@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

@font-face{font-family:MYBB Serif;src:url(serif-ext.woff2) format("woff2");font-weight:400 700;font-display:swap;unicode-range:U+0100-02FF,U+1E00-1EFF}@font-face{font-family:MYBB Sans;src:url(sans-ext.woff2) format("woff2");font-weight:100 900;font-display:swap;unicode-range:U+0100-02FF,U+1E00-1EFF}

.mybb-logo{display:block;width:auto;height:auto;max-width:180px;max-height:52px}.mobile-nav ul{list-style:none;margin:0;padding:0}

/* Wider atlas and compact introduction, while article reading measures stay intact. */
.site-header{max-width:none;height:84px;padding-inline:clamp(18px,3vw,64px)}
.lab-intro{max-width:none;padding:18px clamp(18px,3vw,64px) 20px;display:flex;flex-direction:column;gap:8px;align-items:center;text-align:center}
.lab-intro h1{font-size:clamp(28px,2.5vw,36px);line-height:1.15;letter-spacing:-.025em;margin:0;text-wrap:balance}
.lab-intro .eyebrow{margin:0;font-size:14px}.intro-aside{max-width:none;margin:0;padding:0;display:flex;justify-content:center;align-items:baseline;gap:20px}.intro-aside p{margin:0;font-size:14px;line-height:1.6}.intro-aside a{margin:0;padding:2px 0;font-size:14px;gap:12px;white-space:nowrap}
.atlas-wrapper{max-width:none;padding-inline:clamp(14px,2vw,42px)}
.language-switcher{display:flex;gap:10px;font-size:14px;letter-spacing:.08em;align-items:center}.language-switcher a{padding:8px 0;color:var(--muted);text-decoration:none;border-bottom:1px solid transparent}.language-switcher a[aria-current]{color:var(--accent);border-color:var(--accent)}
@media(max-width:1000px){.site-header{gap:18px}.header-actions{gap:14px}.desktop-nav{gap:20px}}
@media(max-width:720px){.site-header{height:76px;padding-inline:18px}.header-actions{gap:12px}.language-switcher{gap:7px;font-size:14px}.lab-intro{padding:16px 20px 18px;gap:8px}.lab-intro h1{font-size:28px;line-height:1.12}.intro-aside{flex-direction:column;align-items:center;gap:6px}.intro-aside p{max-width:340px;font-size:14px}.intro-aside a{font-size:14px;padding:2px 0}.atlas-wrapper{padding-inline:12px}}

/* Home opens directly on the anatomy; the title shares the atlas toolbar. */
.atlas-home{padding-top:12px}
.atlas-home .atlas-toolbar{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:16px;height:60px}
.atlas-home .atlas-layer-control{justify-self:end}
.atlas-home-heading{font-family:var(--serif);font-size:clamp(20px,1.8vw,28px);font-weight:400;line-height:1.15;letter-spacing:-.025em;text-align:center;margin:0;text-wrap:balance}
.atlas-home-heading em{color:var(--accent)}
@media(min-width:901px){.atlas-home .atlas-layout{height:clamp(480px,calc(100svh - 210px),770px);min-height:0}}
@media(max-width:1000px){.atlas-home .atlas-version{display:none}.atlas-home .atlas-toolbar{gap:12px;padding-inline:18px}.atlas-home .atlas-layer-control{gap:12px}.atlas-home-heading{font-size:20px}}
@media(max-width:720px){.atlas-home{padding-top:10px}.atlas-home .atlas-toolbar{height:auto;min-height:0;grid-template-columns:1fr auto;gap:12px;padding:14px 12px 12px;align-items:center}.atlas-home-heading{grid-column:1/-1;grid-row:1;font-size:23px;max-width:440px;justify-self:center}.atlas-home .atlas-status{font-size:14px;gap:6px;letter-spacing:.08em}.atlas-home .atlas-layer-control{gap:12px}.atlas-home .atlas-layer-control button{font-size:14px}}

/* Shared laboratory identity across the atlas, journal, articles and search. */
.atlas-home-heading{font-family:var(--sans);font-weight:650;font-size:clamp(18px,1.5vw,24px)}
.atlas-home-heading em,.lab-intro em{font-style:normal;font-weight:650}
.atlas-panel h3,.atlas-result h4,.atlas-story h4{font-family:var(--sans);font-weight:650;line-height:1.2;overflow-wrap:anywhere}
.atlas-panel h3{font-size:30px}.atlas-result h4{font-size:18px}.atlas-story h4{font-size:22px}
.atlas-directory-note>span,.atlas-floating-label>b{font-family:var(--sans);font-style:normal;font-weight:600}
.atlas-directory-note>span{font-size:19px}
.section-heading h2,.about-copy h2{font-size:clamp(30px,3.2vw,46px)}
.journal-welcome h3{font-size:clamp(26px,3vw,38px)}
.theme-switcher{display:flex;align-items:center;flex-shrink:0}
.mode-select{width:76px;padding:8px 4px;border:1px solid var(--line);border-radius:3px;background:var(--surface);color:var(--text);font-size:14px;cursor:pointer}
.language-suggestion{position:fixed;right:24px;top:108px;z-index:30;display:flex;align-items:center;gap:20px;max-width:calc(100vw - 32px);padding:10px 14px;border:1px solid var(--line);border-radius:6px;background:var(--surface);box-shadow:0 8px 30px #0003;font-size:14px}
.language-suggestion a{color:var(--accent)}.language-suggestion button{border:0;background:none;font-size:21px;line-height:1;padding:3px 6px}
@media(max-width:1000px){.desktop-nav{gap:14px}.site-header{gap:14px}.header-actions{gap:12px}}
@media(max-width:720px){.mode-select{width:65px;font-size:14px}.header-actions{gap:10px}.site-header{padding-inline:14px;gap:10px}.menu-toggle span{margin-left:3px}.atlas-home-heading{font-size:19px}.language-suggestion{top:85px;right:16px}}
.journal-card{min-width:0}.journal-card h3{overflow-wrap:anywhere}
@media(max-width:360px){.site-header{padding-inline:12px;gap:8px}.header-actions{gap:8px}.brand>span{font-size:30px}.mode-select{width:60px}.menu-toggle{white-space:nowrap}}

/* 1.3.1 — readable body copy, compact headings retained. */
body{font-size:17px}.entry-content{font-size:18px;line-height:1.8}
.journal-card p,.journal-welcome p,.about-copy>p:not(.eyebrow),.conditions-empty,.article-relations p{font-size:17px;line-height:1.8}
.article-sources li,.article-aside{font-size:16px;line-height:1.8}
.brand small{font-size:12px;letter-spacing:.12em}.desktop-nav{font-size:15px}
.medical-disclaimer p,.article-disclaimer p{font-size:15px;line-height:1.8}
.footer-bottom{flex-wrap:wrap;gap:16px}.header-actions{flex-shrink:0}

/* 1.3.2 — quiet molecular margins; decorative and never interactive. */
body{position:relative;isolation:isolate;background-image:radial-gradient(ellipse at 88% 0%,rgba(53,118,205,.08),transparent 42%)}
body::before,body::after{content:"";position:absolute;z-index:-1;pointer-events:none;width:min(26vw,430px);height:720px;background:url('molecular-trace.svg') center/contain no-repeat;opacity:.28}
body::before{top:140px;left:0;transform:translateX(-46%)}
body::after{top:1120px;right:0;transform:scaleX(-1);background-position:130px center;opacity:.15}
:root[data-mode=light] body{background-image:radial-gradient(ellipse at 85% 0%,rgba(45,120,204,.04),transparent 40%)}
:root[data-mode=light] body::before,:root[data-mode=light] body::after{opacity:.12}
.site-header{background:color-mix(in srgb,var(--bg) 93%,transparent)}
@media(max-width:720px){body::before,body::after{display:none}}