:root,:root[data-palette=teal]{--paper:#f7f7f2;--ink:#142936;--teal:#176b63;--night:#091825;--night-rgb:9,24,37;--mint:#8cd8cf;--hero-text:#eef3ec;--hero-muted:#b8c9ce;--hero-line:#344b54;--hero-selected:#183b3d;--reading-muted:#52616a;--reading-panel:#edf1eb;--line:#d7dfda;--background:var(--paper);--foreground:var(--ink);--card:#fff;--card-foreground:var(--ink);--popover:var(--paper);--popover-foreground:var(--ink);--primary:var(--teal);--primary-foreground:#fff;--secondary:var(--reading-panel);--secondary-foreground:var(--ink);--muted:var(--reading-panel);--muted-foreground:var(--reading-muted);--accent:#dfede7;--accent-foreground:var(--teal);--border:var(--line);--input:var(--line);--ring:var(--teal);--logo-first:#228c82;--logo-second:#246284;--logo-light-first:#8ddace;--logo-light-second:#55a8bd;--film-grade:saturate(.82) brightness(1.04)}:root[data-palette=copper]{--paper:#f7f5f0;--ink:#262c2e;--teal:#934b2c;--night:#1c2225;--night-rgb:28,34,37;--mint:#edb18d;--hero-text:#f3ebdf;--hero-muted:#cfc4b9;--hero-line:#55504a;--hero-selected:#47352b;--reading-muted:#60625f;--reading-panel:#eee9e0;--line:#ddd7ce;--accent:#f0e3d6;--logo-first:#c37b47;--logo-second:#8a4533;--logo-light-first:#efbb89;--logo-light-second:#d9825e;--film-grade:grayscale(1) sepia(.78) saturate(1.45) hue-rotate(348deg) brightness(1.08)}::selection{background:var(--accent);color:var(--ink)}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline-color:var(--teal)}.billboard a:focus-visible,.billboard button:focus-visible,.footer a:focus-visible,.header-home a:focus-visible,.header-home button:focus-visible,.header-home summary:focus-visible{outline-color:var(--mint)}.header-inner{gap:22px}.header-tools{display:flex;gap:18px;align-items:center;flex:none}.palette-switch{min-height:44px;height:auto;padding:8px 10px;border:1px solid var(--line);border-radius:2px;background:transparent;color:var(--ink);font-size:.8125rem;box-shadow:none}.palette-switch:hover{background:var(--accent);color:var(--teal)}.palette-swatch{display:block;width:11px;height:11px;border-radius:50%;background:var(--teal);flex:none}.palette-arrows{font-size:1.1rem;line-height:1}.billboard,.billboard-film-footer,.billboard-screen,.billboard-stage,.footer,.header-home.site-header{background:var(--night);color:var(--hero-text)}.header-home.site-header{border-color:var(--hero-line)}.header-home .brand small,.header-home .mobile-nav,.header-home .nav a{color:var(--hero-muted)}.header-home .nav a:hover,.header-home .nav a[aria-current=page]{color:var(--mint)}.header-home .nav-record{border-color:var(--hero-line)!important}.header-home .palette-switch{color:var(--hero-text);border-color:var(--hero-line)}.header-home .palette-switch:hover{background:var(--hero-selected);color:var(--mint)}.header-home .palette-swatch{background:var(--mint)}.header-home .mobile-links,.header-home .mobile-links a{color:var(--ink)}.billboard-heading .eyebrow,.billboard-slogan p{color:var(--hero-muted)}.billboard-heading h1{color:var(--hero-text);text-shadow:0 2px 24px rgba(var(--night-rgb),.2)}.billboard-heading h1 span,.billboard-slogan strong{color:var(--mint)}.billboard-stage:after{background:linear-gradient(90deg,rgba(var(--night-rgb),.98) 0,rgba(var(--night-rgb),.92) 29%,rgba(var(--night-rgb),.65) 46%,rgba(var(--night-rgb),.2) 65%,rgba(var(--night-rgb),.04) 86%),linear-gradient(0deg,rgba(var(--night-rgb),.7),transparent 25%,transparent 78%,rgba(var(--night-rgb),.2))}.billboard-slogan a{color:var(--hero-text);border-color:var(--hero-muted)}.billboard-slogan a:hover{color:var(--mint);border-color:var(--mint)}.billboard-scenes,.billboard-scenes button{border-color:var(--hero-line)}.billboard-scenes button,.billboard-scenes button span,.billboard-treatment{color:var(--hero-muted)}.billboard-scenes button[aria-pressed=true]{background:var(--hero-selected);color:var(--hero-text);box-shadow:inset 0 2px var(--mint)}.billboard-scenes button[aria-pressed=true] span{color:var(--mint)}.billboard-scenes button:hover{background:var(--hero-selected);color:var(--hero-text)}.billboard-controls button,.billboard-scene-name{color:var(--hero-text)}.billboard-controls .billboard-about{border-color:var(--hero-line)}.billboard-controls button:hover{color:var(--mint)}.billboard-play{border-color:var(--mint)}.billboard-error,.billboard-play{background:rgba(var(--night-rgb),.94);color:var(--hero-text)}.author-band,.home-introduction,.research-selection,.vision-band{background:var(--reading-panel);border-color:var(--line)}.introduction-vision{border-color:var(--line)}.article-callout,.learning-box{background:var(--reading-panel);border-color:var(--line)}.study-card:hover{border-color:var(--teal)}.about-grid p,.agenda-crossings p,.article-aside,.article-body figcaption,.author-appointment,.author-band p:not(.eyebrow),.axis p,.axis small,.axis-no,.brand small,.draft-label,.essay-next span,.essay-preview p:not(.eyebrow),.explorable-invite>span:last-child,.introduction-name p,.introduction-name>span,.introduction-vision p,.muted,.note-intro,.note-time,.notes-row p,.opening-thought p:not(.eyebrow),.page-head .back,.page-head .lead,.pub-row p,.publication-pending,.reading-band,.research-block p,.research-context p,.research-film figcaption,.section-tail>p,.sequence-credit,.sequence-list p,.study-copy p,.study-journal,.vision-domain p,.vision-identity,.vision-lead p,.vision-opening p,.vision-questions p,.vision-slogan,.work-card p,.work-meta{color:var(--reading-muted)}.introduction-name .eyebrow{color:var(--teal)}.vision-domain p a,.vision-opening a:not(.text-link){text-decoration-color:var(--teal)}.footer .eyebrow,.footer p,.footer-bottom{color:var(--hero-muted)}.footer-bottom{border-color:var(--hero-line)}.footer h2 em{color:var(--mint)}.dimension-track{background:var(--accent)}.dimension-track>span{background:var(--teal)}.brand-mark{display:block;flex:none;width:46px;height:42px;background:linear-gradient(110deg,var(--logo-first) 25%,var(--logo-second) 75%);mask:url(/images/logo-small-dark.png) center/contain no-repeat;-webkit-mask:url(/images/logo-small-dark.png) center/contain no-repeat}.header-home .brand-mark{--logo-first:var(--logo-light-first);--logo-second:var(--logo-light-second)}.vision-identity .brand-mark{width:65px;height:65px}.brand-mark.article-mark{width:70px;height:70px}.billboard-screen video{filter:var(--film-grade) contrast(var(--film-contrast,1));transition:filter .25s ease}.billboard-screen[data-scene=hbn]{--film-contrast:1.04}.billboard-screen[data-scene=protein]{--film-contrast:1.02}.billboard-screen[data-scene=tungsten]{--film-contrast:1.03}.billboard-screen[data-scene=carbon]{--film-contrast:1.01}.palette-label-copper,:root[data-palette=copper] .palette-label-teal{display:none}:root[data-palette=copper] .palette-label-copper{display:inline}.billboard-playback-status{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.billboard-error{display:flex;align-items:center;gap:12px;flex-wrap:wrap;max-width:calc(100% - 40px)}.billboard-error button{border:1px solid var(--hero-line);background:var(--hero-selected);color:var(--hero-text);padding:6px 12px}.footer-owner{display:flex;gap:24px;align-items:center;flex-wrap:wrap}.owner-statistics-link{display:inline-flex;gap:8px;align-items:center;color:var(--hero-text)}.owner-statistics-link span{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--mint);border:1px solid var(--hero-line);padding:2px 5px}@media(max-width:720px){.brand .brand-mark{width:39px;height:36px}.vision-identity .brand-mark{width:50px;height:50px}.brand-mark.article-mark{width:45px;height:45px}}@media(max-width:1100px){.header-inner{gap:16px}.nav{gap:17px}.nav-record{padding-left:17px!important}.header-tools{gap:12px}}@media(max-width:900px){.nav{display:none}.mobile-nav{display:block;position:relative}.header-tools{margin-left:auto}}@media(max-width:600px){.header-inner{gap:12px;flex-wrap:wrap;padding-block:12px}.palette-switch{padding-inline:8px}.palette-arrows{display:none}.billboard-scenes button:nth-child(-n+2){border-color:var(--hero-line)}.billboard-stage:after{background:linear-gradient(90deg,rgba(var(--night-rgb),.9),rgba(var(--night-rgb),.67) 58%,rgba(var(--night-rgb),.36)),linear-gradient(0deg,rgba(var(--night-rgb),.65),transparent 38%,rgba(var(--night-rgb),.15))}}.article-body .content-equation,.article-body .content-figure,.article-body .content-quote{margin:2rem 0}.content-figure img{width:100%;height:auto;object-fit:contain}.content-figure video{display:block;width:100%;aspect-ratio:16/9;object-fit:contain;background:var(--night)}.article-body .content-equation figcaption,.article-body .content-figure figcaption,.article-body .content-quote figcaption{margin-top:.75rem;font-size:.875rem;line-height:1.75;color:var(--reading-muted)}.content-quote blockquote{margin:0;padding-left:1.25rem;border-left:2px solid var(--teal)}.content-callout{margin:2rem 0;padding:1.5rem;background:var(--reading-panel);border-left:3px solid var(--teal)}.article-body .content-callout h3{margin:0 0 .75rem;font-size:1.25rem}.article-body .content-callout p{margin:0}.content-links{padding-left:1.25rem}.content-links a{text-decoration:underline;text-underline-offset:4px;overflow-wrap:anywhere}.content-table{max-width:100%;overflow-x:auto;margin:2rem 0}.content-table:focus-visible{outline:3px solid var(--teal);outline-offset:4px}.content-table table{width:100%;border-collapse:collapse;font-size:1rem;line-height:1.6}.content-table caption{text-align:left;font-size:.875rem;padding-bottom:.75rem;color:var(--reading-muted)}.content-table td,.content-table th{text-align:left;border-bottom:1px solid var(--line);padding:.75rem;vertical-align:top}.content-table th{font-weight:600}.content-equation [role=math]{overflow-x:auto;padding:1rem;text-align:center;background:var(--reading-panel);font-family:var(--serif);font-size:1.4rem;white-space:pre-wrap}