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@font-face{font-family:Satoshi;src:url('/assets/fonts/satoshi-500.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:Satoshi;src:url('/assets/fonts/satoshi-700.woff2') format('woff2');font-weight:700;font-display:swap}
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:root[data-theme=light]{--bg:#f1f1e8;--surface:#e7ecdf;--surface-raised:#f7f8f1;--text:#183025;--muted:#5c6e60;--soft:#455d4d;--accent:#226846;--line:#c9d3c4;--accent-dim:#b4c9b8;--paper:#dbe5db;--paper-ink:#162c21;--header:rgba(241,241,232,.94);color-scheme:light}
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.section-index{font-size:10px;font-weight:500;letter-spacing:.13em;color:var(--muted);white-space:nowrap}.display{font-size:clamp(36px,4.1vw,61px);line-height:1.18;letter-spacing:-.045em;font-weight:400;text-wrap:balance}.display span{color:var(--muted)}html[lang=zh-CN] .display{font-size:clamp(32px,3.55vw,52px);line-height:1.45;letter-spacing:-.035em}.section-rail .eyebrow{margin-top:20px}.idea{display:grid;grid-template-columns:1fr 2.65fr;gap:60px;padding-block:130px}.idea-lead{max-width:690px;font-size:19px;line-height:1.9;color:var(--soft);margin-top:40px}.idea-lines{display:flex;gap:28px;justify-content:space-between;margin-top:44px;border-top:1px solid var(--line);padding-top:25px}.idea-lines p{font-size:12px;line-height:1.7}.idea-lines span{display:block;font-size:9px;color:var(--accent);margin-bottom:12px}.definition{font-size:12px;color:var(--muted);line-height:1.9;margin-top:38px;max-width:660px}.section-top{display:flex;align-items:center;gap:40px;margin-bottom:52px}.section-top .eyebrow{flex:1}.small-link{font-size:11px;display:flex;align-items:center;gap:14px;color:var(--accent)}.small-link>span{font-size:17px}.foundation{background:var(--surface);border-block:1px solid var(--line)}.foundation-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:100px;align-items:start}.foundation-copy .body-copy{margin-top:32px}.body-copy{font-size:15px;line-height:1.95;color:var(--soft)}.body-copy a,.community-note a,.chapter-body a{color:var(--text);text-decoration:underline;text-decoration-color:var(--accent-dim);text-underline-offset:4px}.body-copy a:hover,.community-note a:hover,.chapter-body a:hover{color:var(--accent);text-decoration-color:var(--accent)}.neuron-stat{margin-top:45px;border-top:1px solid var(--line);padding-top:22px}.neuron-stat strong{font-size:clamp(54px,5.6vw,83px);letter-spacing:-.065em;font-weight:400;line-height:1.3}.neuron-stat>span{display:block;color:var(--muted);font-size:11px}.neuron-stat a{margin-left:5px;color:var(--accent)}.scope-stat{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);margin-top:28px;padding-top:18px;gap:16px;font-size:12px}.scope-stat span{color:var(--muted)}.scope-stat strong{font-weight:400;color:var(--soft)}.science-figure{background:#e9ede5;color:#20382a;align-self:start}.figure-label{display:flex;justify-content:space-between;gap:20px;padding:15px 20px;border-bottom:1px solid #cbd3c9;font-size:8px;letter-spacing:.08em}.science-image{padding:22px 48px 20px;background:#fff}.science-image img{height:350px;width:100%;object-fit:contain}.science-figure figcaption{font-size:9px;line-height:1.8;padding:14px 20px}.science-figure figcaption a{display:block;text-decoration:underline;text-underline-offset:3px;margin-top:3px}.source-layers{margin-top:80px;display:grid;grid-template-columns:repeat(3,1fr);gap:34px}.source-layer{border-top:1px solid var(--line);padding-top:23px;display:flex;gap:20px}.layer-number{color:var(--accent);font-size:10px;line-height:2.3}.source-layer h3{font-size:17px;line-height:1.5}.source-layer .layer-author{color:var(--soft);font-size:10px;line-height:1.8;min-height:40px;margin:10px 0}.source-layer p{color:var(--muted);font-size:12px;line-height:1.9}.community-note{display:flex;gap:21px;max-width:850px;margin-top:54px;padding-top:26px;border-top:1px solid var(--line)}.note-marker{color:var(--accent);font-size:22px;line-height:1.5}.community-note h3{font-size:12px;margin-bottom:8px;color:var(--soft)}.community-note p{font-size:11px;color:var(--muted);line-height:1.9}
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.paper{background:var(--surface);border-block:1px solid var(--line)}.paper-grid{display:grid;grid-template-columns:1fr 1.48fr;gap:100px}.paper-intro{position:sticky;top:40px;align-self:start}.paper-intro .display{font-size:clamp(34px,3vw,47px)}html[lang=zh-CN] .paper-intro .display{font-size:clamp(31px,2.9vw,43px)}.paper-intro>p{color:var(--muted);font-size:13px;line-height:1.9;margin-top:26px;max-width:360px}.pdf-object{display:flex;align-items:center;gap:22px;margin-top:34px;padding:25px 0;border-block:1px solid var(--line);width:100%;transition:padding .25s}.pdf-object:hover{padding-inline:8px}.pdf-cover{position:relative;display:flex;flex-direction:column;justify-content:space-between;width:73px;height:101px;padding:9px 7px;flex:none;background:#b7d2ba;color:#153124;transform:rotate(-4deg);box-shadow:4px 3px 0 var(--accent-dim);overflow:hidden}.pdf-cover>span{font-size:10px;font-weight:700;line-height:.9;letter-spacing:-.055em}.pdf-cover i{position:absolute;width:53px;height:53px;border:1px solid #618b69;border-radius:50%;top:36px;left:38px}.pdf-cover i:before{content:'';position:absolute;inset:8px;border:1px solid #618b69;border-radius:50%}.pdf-cover small{font-size:4px;line-height:1.4;letter-spacing:.03em}.pdf-label{display:flex;flex-direction:column;gap:9px;font-size:12px}.pdf-label strong{font-weight:500}.pdf-label>span{font-size:10px;color:var(--muted)}.pdf-object>span:last-child{margin-left:auto;font-size:21px}.edition-meta{font-size:9px;line-height:1.8;color:var(--muted);display:flex;flex-direction:column;gap:4px;margin-top:18px}.chapter-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;border-bottom:1px solid var(--line);padding-bottom:16px;font-size:8px;letter-spacing:.08em;color:var(--muted)}.expand-chapters{font-size:10px;border:0;background:none;padding:4px 0;color:var(--soft)}.expand-chapters>span{margin-left:14px}.chapter{border-bottom:1px solid var(--line)}.chapter summary{list-style:none;display:flex;align-items:center;gap:22px;padding:27px 0;cursor:pointer}.chapter summary::-webkit-details-marker{display:none}.chapter-number{font-size:10px;color:var(--muted);align-self:flex-start;line-height:2.8;min-width:18px}.chapter-heading{display:flex;flex-direction:column;gap:6px;flex:1}.chapter-heading strong{font-size:19px;font-weight:400;letter-spacing:-.015em;line-height:1.5}.chapter-heading>span{font-size:10px;color:var(--muted)}.chapter-toggle{width:18px;height:18px;position:relative;flex:none}.chapter-toggle:before,.chapter-toggle:after{content:'';position:absolute;background:var(--soft);left:3px;right:3px;top:8px;height:1px}.chapter-toggle:after{transform:rotate(90deg);transition:transform .2s}.chapter[open] .chapter-toggle:after{transform:rotate(0)}.chapter[open] .chapter-heading strong{color:var(--accent)}.chapter-body{padding:0 29px 30px 40px}.chapter-body p{font-size:13px;line-height:2;color:var(--soft);max-width:66ch}.chapter-body p+p{margin-top:16px}.sources{display:grid;grid-template-columns:1fr 2fr;gap:90px}.sources-heading h2{font-size:25px;line-height:1.5;letter-spacing:-.04em;margin-top:25px}.sources-heading p{font-size:12px;line-height:1.9;color:var(--muted);margin-top:18px;max-width:300px}.sources ol{padding:0;margin:0;list-style:none}.sources li{border-top:1px solid var(--line)}.sources li:last-child{border-bottom:1px solid var(--line)}.sources li a{display:flex;gap:20px;align-items:flex-start;padding:21px 0;transition:padding .2s}.sources li a:hover{padding-inline:8px}.source-number{font-size:9px;color:var(--muted);padding-top:2px}.sources li a>div{flex:1}.source-credit{font-size:9px;line-height:1.6;color:var(--muted);display:block}.sources h3{font-size:12px;font-weight:400;line-height:1.7;color:var(--soft);margin-top:5px}.sources li a>span:last-child{font-size:18px;line-height:1.4;color:var(--accent)}.closing{background:#030807;color:#edf4ee;border-top:1px solid #23372c;padding-block:52px}.closing>.wrap{display:flex;gap:70px;align-items:center}.closing img{width:300px;mix-blend-mode:screen;margin-left:-10px}.closing p{font-size:22px;letter-spacing:-.045em;line-height:1.5}.closing div>span{font-size:11px;color:#8ba091;display:block;margin-top:7px}.back-top{margin-left:auto;flex:none;width:50px;height:50px;border:1px solid #365140;border-radius:50%;display:grid;place-items:center;font-size:21px;transition:border-color .2s,background .2s}.back-top:hover{border-color:#a3efc7;background:#12231a}.site-footer{display:flex;align-items:center;gap:35px;color:var(--muted);font-size:9px;min-height:80px}.site-footer>span:nth-child(2){margin-left:auto}.site-footer .icon-button{margin-left:0}
@keyframes state-flow{from{transform:translateX(0);opacity:0}15%{opacity:1}85%{opacity:1}to{transform:translateX(32px);opacity:0}}
.motion-ready .reveal{opacity:0;transform:translateY(17px);transition:opacity .8s ease,transform .8s ease}.motion-ready .reveal.is-visible{opacity:1;transform:none}
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