:root{--paper:#fbf8f7;--paper-deep:#f4efeb;--ink:#211e1a;--muted:#756e66;--gold:#9c7a49;--arterial:#b6493f;--transition:#c5a33d;--venous:#587aa0;--cyan:#5fa8ae;--line:rgba(72,62,51,.14);--dark:#0c1012}
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html{scroll-behavior:smooth;background:var(--paper)}
body{margin:0;color:var(--ink);background:var(--paper);font-family:"Helvetica Neue",Arial,sans-serif;font-weight:300;overflow-x:hidden}
button,input{font:inherit}
a{color:inherit}
.threshold{position:relative;min-height:100svh;overflow:hidden;background:radial-gradient(ellipse at 50% 23%,#fff 0,#fffdfa 30%,var(--paper) 68%,#f8f3f0 100%)}
#field{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.identity{position:absolute;left:50%;top:8.5vh;width:min(680px,72vw);height:190px;transform:translateX(-50%);pointer-events:none}
.identity img{position:absolute;left:50%;height:auto;transform:translateX(-50%);user-select:none;-webkit-user-drag:none}
.mark{top:0;width:50px}.wordmark{top:73px;width:min(410px,65vw);opacity:0}.atlasmark{top:121px;width:min(585px,78vw);opacity:0}
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.suspension{position:absolute;left:50%;top:34vh;width:90px;height:24vh;transform:translateX(-50%);pointer-events:none}
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.threshold-copy{position:absolute;left:50%;top:65vh;width:min(760px,88vw);transform:translateX(-50%);text-align:center}
.eyebrow{margin:0 0 24px;font-size:10px;font-weight:500;letter-spacing:.48em;text-transform:uppercase;color:rgba(91,77,62,.65)}
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.section-number{position:absolute;left:2.2vw;top:55px;font-family:Georgia,serif;font-size:12px;font-style:italic;color:rgba(80,68,56,.35)}
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h2{margin-bottom:30px;font-size:clamp(46px,6.3vw,96px);line-height:.98}
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.world.active{box-shadow:0 34px 90px rgba(85,62,38,.07)}
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.research-readout{padding:19px 22px}.research-readout div{padding:12px 0;border-bottom:1px solid var(--line)}.research-readout div:last-child{border:0}.research-readout span{display:block;margin-bottom:7px;font-size:7px;letter-spacing:.24em;color:rgba(76,66,56,.4)}.research-readout b{font-family:Georgia,serif;font-size:13px;font-weight:400;line-height:1.4;color:rgba(46,40,34,.72)}
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.continuance{background:linear-gradient(180deg,var(--paper),#f7f2ef)}
.observatory{position:relative;width:min(1180px,100%);min-height:640px;margin:auto;padding:34px;border:1px solid var(--line);overflow:hidden;background:rgba(255,255,255,.38)}
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@keyframes turn{to{transform:translate(-50%,-50%) rotate(360deg)}}
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.change{position:relative;min-height:100svh;padding:clamp(140px,17vw,260px) max(7vw,28px);overflow:hidden;color:#e9e5df;background:radial-gradient(circle at 50% 50%,#182025 0,var(--dark) 48%,#080b0d 100%)}
.section-number.light{color:rgba(235,228,216,.25)}
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@keyframes breathe{50%{opacity:.34;transform:translate(-50%,-50%) scale(1.035)}}
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.scale-copy{margin-bottom:110px}.scales{display:grid;grid-template-columns:repeat(3,1fr);width:min(1200px,100%);margin:auto;border-top:1px solid var(--line)}.scales article{min-height:360px;padding:40px 38px;border-right:1px solid var(--line)}.scales article:last-child{border-right:0}.scales span{font-size:9px;letter-spacing:.36em;color:var(--gold)}.scales h3{margin:70px 0 24px;font-family:Georgia,serif;font-size:clamp(23px,2vw,32px);font-weight:400;line-height:1.25}.scales p{font-family:Georgia,serif;font-size:16px;line-height:1.65;color:var(--muted)}
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footer{position:absolute;left:28px;right:28px;bottom:24px;z-index:2;display:flex;justify-content:space-between;font-size:8px;letter-spacing:.35em;color:rgba(59,50,42,.42)}
.reveal{opacity:0;transform:translateY(22px);transition:opacity 1.1s ease,transform 1.1s ease}.reveal.visible{opacity:1;transform:none}
.threshold-copy.reveal{transform:translate(-50%,22px)}.threshold-copy.reveal.visible{transform:translate(-50%,0)}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.orbit,.change-field i{animation:none}.reveal{opacity:1;transform:none;transition:none}#field,#final-field{display:none}}