.scale-lab{--lab-warm:#efbda1;--lab-cool:#8de3d3;max-width:1600px;margin:auto;padding:0 clamp(22px,5vw,80px)}.scale-lab [hidden]{display:none!important}
.lab-hero{display:grid;grid-template-columns:1.4fr 1fr;align-items:center;gap:40px;padding:100px 0 70px}.lab-hero h1{font-family:var(--display);font-size:clamp(46px,5.5vw,88px);font-weight:400;line-height:1.05;letter-spacing:-.04em;margin:22px 0 28px}.lab-hero h1 em,.lab-tool h2 em,.lab-sources h2 em,.lab-next h2 em{color:var(--lab-cool)}.lab-hero p:not(.eyebrow){font-size:18px;line-height:1.8;color:#c0cecc;max-width:56ch}.lab-hero .lab-bookmark{font-size:13px!important;color:#94aaa9!important}.lab-hero-art{height:340px;position:relative;overflow:hidden;border:1px solid var(--line);background:radial-gradient(ellipse at 55% 50%,#153335,#081016 70%)}.lab-ring{position:absolute;left:16%;top:24%;width:140px;aspect-ratio:1;border-radius:50%;background:#04080b;box-shadow:0 0 0 1px #ecb69c,0 0 20px 3px #e8ac8130}.lab-signal{position:absolute;left:50%;top:48%;width:40%;height:1px;background:linear-gradient(90deg,#8de3d3,transparent)}.lab-signal:before,.lab-signal:after{content:'';position:absolute;left:20%;top:-25px;width:50px;height:50px;border:1px solid #8de3d360;border-radius:50%}.lab-signal:after{left:45%;top:-45px;width:90px;height:90px}.lab-cloud{position:absolute;width:45px;height:45px;left:78%;top:70%;border-radius:50%;background:radial-gradient(circle,#efbda1a0,transparent 70%)}.lab-hero-art small{position:absolute;bottom:24px;left:24px;right:20px;font-size:10px;letter-spacing:.15em;color:#92aaa9;line-height:1.7}
.lab-jumps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:60px}.lab-jumps a{padding:24px;border:1px solid var(--line);background:#0c181e;display:flex;flex-direction:column;gap:12px}.lab-jumps span{font-size:10px;letter-spacing:.14em;color:var(--lab-cool)}.lab-jumps strong{font-family:var(--display);font-size:25px;font-weight:400}.lab-jumps small{color:#a5b7b6;font-size:12px;line-height:1.6}.lab-jumps a:hover{border-color:var(--lab-cool)}
.lab-tool{padding:64px 0 76px;border-top:1px solid var(--line);scroll-margin-top:110px}.lab-tool-heading{max-width:78ch;margin-bottom:30px}.lab-tool h2,.lab-sources h2,.lab-next h2{font-family:var(--display);font-size:clamp(38px,4vw,62px);font-weight:400;line-height:1.1;letter-spacing:-.025em;margin:18px 0 24px}.lab-tool-heading>p:last-child,.lab-sources>p:last-of-type{max-width:70ch;color:#bbcdca;font-size:17px;line-height:1.8}
.lab-controls{padding:28px;background:#0b1920;border:1px solid var(--line);margin:28px 0;display:grid;gap:20px 28px}.lab-masses,.lab-distance{grid-template-columns:repeat(2,minmax(0,1fr))}.lab-controls fieldset{border:0;padding:0;min-width:0;margin:0}.lab-controls legend{font-family:var(--display);font-size:24px;margin-bottom:18px}.lab-controls label,.lab-share-fallback label{display:block;font-size:12px;color:#c6d8d4;line-height:1.6;margin-bottom:8px}.lab-controls input:not([type=range]),.lab-controls select,.lab-share-fallback input{width:100%;min-width:0;min-height:48px;padding:12px 14px;border:1px solid #47706d;border-radius:0;background:#071117;color:#eff8f5;font:inherit;font-size:16px}.lab-controls fieldset input{margin-bottom:18px}.lab-controls select{color-scheme:dark}.scale-lab input:focus-visible,.scale-lab select:focus-visible,.scale-lab button:focus-visible,.scale-lab a:focus-visible,.scale-lab summary:focus-visible{outline:2px solid var(--lab-cool);outline-offset:4px}.lab-controls [aria-invalid=true]{border-color:#edb09a!important}.lab-hint,.lab-error,.lab-preset-row,.lab-submit{grid-column:1/-1}.lab-hint{font-size:12px;color:#9fb5b2;line-height:1.8;margin:0;max-width:100ch}.lab-error{color:#ffd0bb;font-size:14px;line-height:1.8;margin:0}.lab-error:empty,.lab-status:empty{display:none}.lab-submit,.lab-actions button,.lab-preset-row button{font:inherit;cursor:pointer;min-height:44px;padding:10px 18px;border:1px solid #47706d;background:#122c31;color:#d8ebe5;text-align:left;font-size:12px;line-height:1.7}.lab-submit{justify-self:start;background:var(--lab-cool);color:#071117;border-color:var(--lab-cool)}.lab-preset-row{display:flex;flex-wrap:wrap;gap:10px}.lab-preset-row button{background:#071117}.scale-lab button:hover{border-color:var(--lab-cool)}
.lab-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:28px 0}.lab-results-two{grid-template-columns:repeat(2,minmax(0,1fr))}.lab-result{padding:24px;background:#101e25;border:1px solid var(--line);min-width:0}.lab-result>p:first-child{font-size:10px;letter-spacing:.13em;color:#aec4be;line-height:1.7;margin:0 0 18px}.lab-result h3{font-family:var(--display);font-size:clamp(25px,3vw,42px);font-weight:400;line-height:1.2;overflow-wrap:anywhere;margin:0 0 10px}.lab-result>span{font-size:12px;color:#9fb5b2;line-height:1.7}.lab-result-a h3{color:var(--lab-cool)}.lab-result-b h3{color:var(--lab-warm)}.lab-result dl{border-top:1px solid var(--line);padding-top:18px;margin:20px 0 0;font-size:13px;line-height:1.7;display:grid;grid-template-columns:auto 1fr;gap:12px 16px}.lab-result dd{margin:0;text-align:right;overflow-wrap:anywhere}.lab-result dt{color:#9fb5b2}.lab-result-note{font-size:12px;line-height:1.8;color:#9fb5b2;margin:20px 0 0}
.lab-figure{margin:28px 0;background:#08151a;border:1px solid var(--line);padding:28px;min-width:0}.lab-plot-scroll{overflow-x:auto}.lab-horizon-plot{display:block;width:100%;min-width:860px;height:auto}.lab-figure figcaption{font-size:13px;line-height:1.8;color:#aabfba;margin-top:22px;max-width:100ch}.lab-diagram-credit{margin:24px 0 0;padding-top:18px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:9px;color:#839e98;letter-spacing:.08em;line-height:1.8}.lab-timeline ol{list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:0;margin:0}.lab-timeline li{border-top:2px solid #47706d;padding:24px 24px 8px 0;min-width:0}.lab-timeline li+li{padding-left:24px;border-left:1px solid var(--line)}.lab-timeline li span{display:block;color:var(--lab-cool);font-size:clamp(19px,2.5vw,32px);font-family:var(--display);line-height:1.4;overflow-wrap:anywhere;margin-bottom:20px}.lab-timeline strong{display:block;font-weight:500;font-size:14px;line-height:1.7}.lab-timeline small{display:block;color:#9fb5b2;line-height:1.8;margin-top:6px}
.lab-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.lab-actions button{background:transparent}.lab-status{font-size:13px;line-height:1.8;color:var(--lab-cool);margin:16px 0}.lab-load-status{color:var(--lab-warm)}.lab-share-fallback{margin-top:24px}.lab-share-fallback input{font-size:13px}.lab-noscript{padding:22px;border:1px solid var(--line);color:#c4d7d0;font-size:15px;line-height:1.8}.lab-explanation{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;align-items:start;margin-top:40px}.lab-worked h3{font-family:var(--display);font-size:28px;font-weight:400;line-height:1.3;margin:16px 0}.lab-worked p:not(.eyebrow),.lab-assumptions p{color:#b6cbc4;font-size:15px;line-height:1.9;max-width:68ch}.lab-worked .lab-equation{padding:20px;border-left:2px solid var(--lab-cool);background:#0b1b20;font-family:monospace;font-size:14px!important;overflow-wrap:anywhere;line-height:1.9!important}.lab-worked a{color:var(--lab-cool);text-decoration:underline;text-underline-offset:3px}.lab-assumptions{border:1px solid var(--line);padding:0 24px}.lab-assumptions summary{cursor:pointer;font-size:15px;line-height:1.6;padding:20px 0;min-height:64px;color:#d6e8df}.lab-assumptions[open]{padding-bottom:12px}.lab-routes{display:flex;flex-wrap:wrap;gap:14px 28px;border-top:1px solid var(--line);margin-top:36px;padding-top:24px}.lab-routes a{font-size:13px;line-height:1.8;color:var(--lab-cool)}
.lab-biology{grid-template-columns:repeat(3,minmax(0,1fr))}.lab-zoom-control{grid-column:1/-1;margin:8px 0}.lab-zoom-control input{width:100%;height:44px;accent-color:var(--lab-cool);cursor:pointer}.lab-zoom-control label{font-size:15px}.lab-zoom-labels{display:flex;justify-content:space-between;gap:20px;color:#8faea5;font-size:11px;line-height:1.8}.lab-worlds{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.lab-world{background:#0d2025;border:1px solid var(--line);padding:20px 0;min-width:0}.lab-world h3{margin:0 18px 8px;font-family:var(--display);font-size:24px;font-weight:400;line-height:1.4}.lab-world>p{margin:0 18px 12px;color:#b2cac1;font-size:12px;line-height:1.8}.lab-world svg{width:100%;height:auto;display:block;overflow:hidden}.lab-world .lab-resolution{margin-top:18px;color:var(--lab-cool);min-height:44px}.lab-world .lab-field{margin-bottom:0;color:#8faea5}
.lab-sources,.lab-next{border-top:1px solid var(--line);padding:64px 0;scroll-margin-top:110px}.lab-source-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:20px;margin-top:36px}.lab-source{padding:24px;border:1px solid var(--line);min-width:0;scroll-margin-top:110px}.lab-source h3{font-size:15px;line-height:1.7;font-weight:500;margin:0 0 14px;color:var(--lab-cool)}.lab-source p{font-size:13px;line-height:1.9;color:#a9c0b7;margin:0}.lab-source:target{border-color:var(--lab-cool);background:#112c2b}.lab-next-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:30px}.lab-next-grid a{border:1px solid var(--line);padding:24px;display:flex;flex-direction:column;gap:16px}.lab-next-grid strong{font-family:var(--display);font-size:25px;font-weight:400;line-height:1.4}.lab-next-grid span{font-size:13px;line-height:1.8;color:#a9c0b7}
@media(max-width:1100px){.lab-hero{grid-template-columns:1.6fr 1fr;gap:24px;padding-top:70px}.lab-hero-art{height:280px}.lab-ring{width:100px;left:12%}.lab-results{grid-template-columns:repeat(2,minmax(0,1fr))}.lab-results>.lab-result:last-child:nth-child(3){grid-column:1/-1}.lab-worlds{grid-template-columns:1fr}.lab-world{display:grid;grid-template-columns:1fr 1.5fr;align-content:start;padding:20px}.lab-world svg{grid-column:2;grid-row:1/5;max-height:280px}.lab-world>p,.lab-world h3{margin-left:0;margin-right:0}.lab-world .lab-resolution{min-height:0}.lab-jumps strong{font-size:22px}}
@media(max-width:700px){.lab-hero{grid-template-columns:1fr;padding:50px 0 36px}.lab-hero h1{font-size:clamp(38px,9vw,58px)}.lab-hero-art{height:220px}.lab-hero p:not(.eyebrow){font-size:16px}.lab-ring{width:110px;left:20%;top:16%}.lab-jumps{grid-template-columns:1fr;margin-bottom:38px}.lab-jumps a{padding:20px;gap:8px}.lab-jumps strong{font-size:25px}.lab-tool,.lab-sources,.lab-next{padding:44px 0;scroll-margin-top:90px}.lab-controls{padding:20px;gap:20px}.lab-masses,.lab-distance,.lab-biology,.lab-results,.lab-results-two,.lab-explanation,.lab-source-grid,.lab-next-grid{grid-template-columns:1fr}.lab-results>.lab-result:last-child:nth-child(3){grid-column:auto}.lab-figure{padding:18px}.lab-result h3{font-size:34px}.lab-tool-heading>p:last-child{font-size:16px}.lab-timeline ol{grid-template-columns:1fr}.lab-timeline li{padding:22px 0}.lab-timeline li+li{padding-left:0;border-left:0;border-top:1px solid var(--line)}.lab-timeline li span{margin-bottom:12px}.lab-world{display:block;padding:20px 0}.lab-world h3,.lab-world>p{margin-left:18px;margin-right:18px}.lab-world svg{max-height:none}.lab-zoom-labels{font-size:10px}.lab-source{scroll-margin-top:90px}.lab-result dl{font-size:12px}.lab-diagram-credit{font-size:8px}}

/* Read the familiar unit first; preserve scientific equivalents. */
.lab-inch-equivalent{font-size:12px;color:#a9c0b7;line-height:1.8;overflow-wrap:anywhere;margin:10px 0 0}.lab-zoom-labels>span{max-width:47%;overflow-wrap:anywhere}.lab-result dd{line-height:1.8}

.lab-unit-note{padding:20px 24px;border-left:2px solid var(--lab-cool);background:#0b1b20;color:#b6cbc4;font-size:14px;line-height:1.9;max-width:90ch;margin:24px 0}.lab-unit-note strong{color:#dcebe5}

/* Named destinations occupy balanced rows; long names wrap on narrow screens. */
.lab-destinations,.lab-alignment{grid-column:1/-1}.lab-destination-groups{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 28px;margin-top:22px}.lab-group-label{font-size:10px;letter-spacing:.12em;line-height:1.8;color:#aec4be;margin:0 0 12px}.lab-destination-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.lab-destination-grid button{min-width:0;overflow-wrap:anywhere;min-height:48px}.lab-destination-grid button[aria-pressed=true]{border-color:var(--lab-cool);background:#173a3c;color:#effaf6;box-shadow:inset 3px 0 var(--lab-cool)}.lab-alignment{max-width:70ch}.lab-alignment .lab-hint{margin-top:12px}.lab-selection{padding:24px 28px;border:1px solid var(--line);background:#0b1b20;margin:28px 0}.lab-selection h3{font-family:var(--display);font-size:clamp(26px,3vw,38px);font-weight:400;line-height:1.3;margin:14px 0;color:var(--lab-cool)}.lab-selection p:not(.eyebrow){font-size:14px;line-height:1.9;color:#b6cbc4;max-width:95ch;overflow-wrap:anywhere}.lab-selection .lab-selection-distance{font-size:16px!important;color:#dcebe5!important;font-variant-numeric:tabular-nums}.lab-selection a{display:inline-block;color:var(--lab-cool);font-size:13px;line-height:1.8;text-decoration:underline;text-underline-offset:3px;min-height:44px;padding-top:10px}.lab-selection .eyebrow{margin:0}
@media(max-width:700px){.lab-destination-groups{grid-template-columns:1fr}.lab-selection{padding:20px}.lab-destination-grid button{padding:10px 12px}}