@font-face{font-family:Inter;src:url('assets/fonts/inter-latin-variable-400-800.woff2') format('woff2');font-weight:400 800;font-display:swap}
:root{--bg:#08090a;--surface:#101214;--text:#eeeef0;--muted:#929499;--faint:#62676d;--line:rgba(226,232,239,.095);--accent:#b1c5bd;--ease:cubic-bezier(.16,1,.3,1);color-scheme:dark;font-family:Inter,Arial,sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--text);font-size:15px;-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}button,a{touch-action:manipulation}button{border:0}a:focus-visible,button:focus-visible{outline:2px solid #b9ccdf;outline-offset:5px}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:500}h1,h2{letter-spacing:-.047em}p{line-height:1.65}svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}button svg,a svg{display:inline-block}.icon-library{position:absolute;width:0;height:0;overflow:hidden}.container{width:calc(100% - 112px);max-width:1216px;margin-inline:auto}.skip-link{position:fixed;top:-80px;left:18px;z-index:2000;padding:12px 20px;background:white;color:black}.skip-link:focus{top:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}
.site-header{height:72px;position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(8,9,10,.87);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid transparent;transition:border-color .4s}.site-header.is-scrolled{border-color:var(--line)}.nav-inner{max-width:1216px;width:calc(100% - 112px);height:100%;margin:auto;display:flex;align-items:center;gap:36px}.brand{display:inline-flex;align-items:center;gap:9px;font-size:21px;font-weight:560;letter-spacing:-.7px;white-space:nowrap}.brand-emblem{display:grid;place-items:center;width:27px;height:27px;border:1px solid #d9dbe0;border-radius:50%;font-size:14px;font-weight:700;letter-spacing:-1.5px;padding-right:1px;transform:rotate(-12deg);color:#f4f4f5;background:linear-gradient(145deg,#242629,#101113)}.desktop-nav{display:flex;align-items:center;gap:28px;margin-left:auto}.desktop-nav a,.login-link{font-size:13px;color:#92959b;transition:color .2s}.desktop-nav a:hover,.login-link:hover{color:white}.nav-actions{display:flex;align-items:center;gap:24px}.login-link{border-left:1px solid var(--line);padding-left:24px}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;background:#ededef;color:#111214;border:1px solid #ededef;padding:13px 20px;border-radius:7px;font-size:14px;font-weight:500;transition:background .2s,transform .2s}.button:hover{background:white;transform:translateY(-1px)}.button-small{border-radius:99px;font-size:12px;padding:8px 14px;gap:8px}.button-ghost{background:transparent;color:#d3d5d9;border-color:#2c2e32}.button-ghost:hover{background:#191b1e}.nav-toggle{display:none;background:transparent;padding:10px}.nav-toggle span{display:block;width:20px;height:1px;background:#d9dbe0;margin:5px 0;transition:transform .2s}.mobile-nav{display:none}.text-action{display:inline-flex;gap:14px;align-items:center;white-space:nowrap;font-size:14px;color:#d8dbe0}.text-action svg{transition:transform .3s}.text-action:hover svg{transform:translateX(4px)}.subtle-link{display:inline-flex;align-items:center;gap:15px;font-size:13px;color:#d4d6dc;margin-top:24px}.subtle-link span{color:#7d838c}.eyebrow{font-size:13px;line-height:1.5;letter-spacing:-.01em;color:#999da5}.tiny-label{font-family:Inter,Arial,sans-serif;font-size:10px!important;font-weight:500;line-height:1.5!important;letter-spacing:.09em;text-transform:uppercase;color:#727a84}.muted{color:#747b84}.status-ring{display:inline-block;width:10px;height:10px;border:1.5px solid #9baea6;border-radius:50%;flex-shrink:0;box-shadow:0 0 10px #829e8b0c}.status-ring.purple{border-color:#a29ac4}.topic-dot{display:inline-block;width:7px;height:7px;border-radius:2px;background:#868d96;flex-shrink:0}.topic-dot.violet{background:#9290ae}.topic-dot.cyan{background:#7c9a9e}.topic-dot.green{background:#90a899}.topic-dot.amber{background:#b0a18a}
/* Cinematic opening: six oversized, oblique worlds. The camera never settles into a flat screenshot. */
.hero{position:relative;min-height:884px;height:min(970px,100svh);border-bottom:1px solid var(--line);isolation:isolate;overflow:hidden;padding-top:72px}.hero-cinema{position:absolute;inset:0;z-index:-1;overflow:hidden;--world-fit:1;--progress:0}.hero-haze{position:absolute;inset:0;background:radial-gradient(ellipse at 60% 35%,#1a222720,transparent 66%)}.hero-shot{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .18s linear,visibility .18s;overflow:hidden;perspective:1200px}.hero-shot.is-active{opacity:1;visibility:visible}.hero-shot.is-leaving{visibility:visible}.shot-world{position:absolute;width:1420px;height:620px;top:20px;left:calc(50% - 690px);transform-style:preserve-3d;transform-origin:50% 50%;transform:perspective(1200px) translate3d(var(--camera-x,0px),var(--camera-y,0px),0) rotateZ(var(--camera-rz,8deg)) rotateY(var(--camera-ry,-13deg)) rotateX(var(--camera-rx,35deg)) scale(calc(var(--camera-scale,1)*var(--world-fit)));will-change:transform;filter:brightness(.7);color:#adb5be}.cinema-panel{position:absolute;border:1px solid #30363e;border-radius:12px;background:linear-gradient(140deg,#171c22,#111519);box-shadow:0 2px 1px #ffffff08 inset,0 26px 60px #0009,0 0 0 5px #0a0c0f66;overflow:hidden;backface-visibility:hidden}.panel-bar{height:48px;border-bottom:1px solid #ffffff0d;padding:0 23px;display:flex;align-items:center;gap:11px;font-size:13px;font-weight:500;color:#939ca7;white-space:nowrap}.bar-end{margin-left:auto;font-size:10px;color:#626c78;letter-spacing:.08em}.panel-symbol{font-size:21px;color:#8893a0}.panel-inset{padding:28px}.cinema-panel h3{font-size:25px;line-height:1.25;letter-spacing:-.5px;color:#c4cbd3;margin:12px 0 18px}.cinema-panel p{font-size:15px;line-height:1.65}.construction-back{left:70px;top:35px;width:870px;height:490px;transform:translateZ(-40px);filter:blur(.4px)}.construction-front{left:850px;top:245px;width:530px;height:320px;transform:translateZ(65px)}.construction-front .panel-inset{padding:20px 25px}.construction-front h3{font-size:22px;margin-top:12px;margin-bottom:20px}.code-lines{margin:25px -28px 0;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:17px;line-height:2.2}.code-lines div{display:flex;gap:22px;padding:0 28px;white-space:nowrap;border-left:2px solid transparent;transition:color 1s,background 1s}.code-lines i{width:20px;font-style:normal;color:#414e5b}.code-lines b{font-weight:400;color:#619d9b}.code-highlight{background:#193e3026;border-left-color:#568370!important}.code-highlight b{color:#86aa92}.hero-cinema[data-beat="1"] .code-highlight,.hero-cinema[data-beat="2"] .code-highlight{background:#1d55334a;color:#c5ddce}.hero-cinema[data-beat="3"] .code-highlight{background:#193e3026}.math-line{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:21px;white-space:nowrap;color:#a5b6c0}.math-line em{font-style:normal;color:#79a296}.annotation-strip{display:flex;gap:15px;align-items:center;border-top:1px solid #ffffff0e;padding-top:17px;margin-top:20px;font-size:11px}.annotation-strip span{color:#737f8b}.annotation-strip strong{font-weight:500;color:#a8b3be}.typing-line{margin-top:20px;font-size:12px;color:#849b90;height:24px;overflow:hidden;white-space:nowrap}.caret{display:inline-block;width:1px;height:13px;background:#bcc9d0;vertical-align:-2px;margin-left:3px}.floating-label{position:absolute;left:290px;top:570px;color:#7a8794;display:flex;align-items:center;gap:12px;font-size:12px;transform:translateZ(40px)}.world-corpus{left:calc(50% - 740px);top:-20px}.corpus-macro{width:1130px;height:630px;left:90px;top:10px}.macro-ledger>div{display:flex;justify-content:space-between;gap:40px;padding:22px 38px;border-bottom:1px solid #ffffff09;font-size:19px;white-space:nowrap;color:#8f9ba8}.macro-ledger>div>span{display:flex;align-items:center;gap:16px}.macro-ledger>div>span:last-child{font-size:14px;color:#626f7f}.macro-ledger .ledger-head{font-size:10px;color:#576677;letter-spacing:.1em;padding-block:18px}.selected-ledger{background:linear-gradient(90deg,#192c284a,#141c22);border-left:2px solid #7a958a}.corpus-float{top:260px;left:980px;width:390px;transform:translateZ(95px);padding:28px}.macro-number{font-size:69px;letter-spacing:-5px;color:#c4cdd6;margin:13px 0}.macro-number>span{font-size:36px;vertical-align:top;line-height:1.7;margin-left:5px}.index-tags{display:flex;gap:6px;margin-bottom:18px}.index-tags span{border:1px solid #303842;border-radius:4px;padding:4px 10px;font-size:10px}.corpus-float p:last-child{font-size:14px;color:#778592}.world-inference{width:1450px}.inference-page{left:60px;top:20px;width:1010px;height:550px}.inference-page .panel-inset{padding:36px 60px}.inference-page h3{font-size:30px;margin-top:20px}.passage-line{font-size:20px!important;color:#798894;margin:22px 0;line-height:1.65!important}.focus-passage{background:linear-gradient(90deg,#3032445c,transparent);color:#a3abbe;padding-left:16px;border-left:2px solid #797895}.inference-float{left:980px;top:245px;width:340px;transform:translateZ(90px)}.inference-chain{padding:25px 35px;display:flex;flex-direction:column;align-items:center;gap:9px}.inference-chain>span{padding:10px;border:1px solid #2b3340;width:100%;text-align:center;font-size:14px;border-radius:5px;color:#858fa0}.inference-chain i{font-size:17px;color:#505d6b;font-style:normal}.inference-chain .chain-assumption{border-color:#505167;background:#23212f;color:#b0abc6}.derivation-macro{width:1130px;left:70px;top:0;height:540px}.large-equations{padding:35px 0;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:29px;color:#9faeba;line-height:1.5}.large-equations>div{display:flex;gap:45px;align-items:center;padding:18px 36px;white-space:nowrap}.large-equations i{font-size:17px;color:#4c5d6c;font-style:normal}.large-equations em{font-style:normal;color:#8eb69e}.large-equations .equation-focus{background:#0b5a3726;border-left:2px solid #668f78}.derivation-note{width:380px;left:960px;top:310px;transform:translateZ(95px);padding:28px}.derivation-note h3{font-size:82px;letter-spacing:-6px;margin:6px 0;color:#bacdc3}.derivation-note p{font-size:16px;color:#85968e}.derivation-note .annotation-strip{display:block}.derivation-note .annotation-strip strong{display:block;margin-top:5px}.variant-stack{width:570px;height:340px;top:65px}.variant-stack h3{font-size:35px;margin:35px 35px 20px}.variant-stack p{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:19px;margin:0 35px;color:#94b29f}.variant-stack-1{left:15px;transform:translateZ(-70px);opacity:.55}.variant-stack-2{left:430px;top:165px;transform:translateZ(20px);opacity:.85}.variant-stack-3{left:850px;top:255px;transform:translateZ(110px)}.variant-stack-3 .annotation-strip{margin-inline:35px}.foundation-panel{width:1170px;height:510px;left:90px;top:40px}.foundation-columns{display:flex;gap:100px;padding:36px 60px}.foundation-columns strong{display:block;font-size:80px;font-weight:400;color:#b1bdc8;letter-spacing:-4px;line-height:1.3;margin-top:7px}.foundation-columns p:last-child{color:#6f8090;font-size:16px}.foundation-flow{display:flex;align-items:center;justify-content:space-between;margin:0 60px;border-top:1px solid #ffffff12;padding-top:25px;font-size:14px;color:#91a29d}.foundation-flow i{font-style:normal;color:#475760}.foundation-note{left:910px;top:440px;transform:translateZ(90px);width:490px;padding:24px;display:flex;gap:20px;align-items:center}.foundation-note svg{width:28px;height:28px;color:#9bb2a6}.foundation-note p{font-size:15px;color:#a4afb9}.cinema-vignette{position:absolute;inset:0;pointer-events:none;background:linear-gradient(0deg,#08090a 4%,#08090a 17%,#08090af5 24%,#08090a9a 42%,#08090a15 63%,#08090a18 80%,#08090a 100%),linear-gradient(90deg,#08090aee 0%,#08090a15 18%,transparent 72%,#08090ab8 100%)}.hero-grain{position:absolute;inset:0;opacity:.035;pointer-events:none;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' opacity='.45' filter='url(%23n)'/%3E%3C/svg%3E")}.hero-copy{position:relative;padding-top:490px;z-index:2}.hero-copy .eyebrow{color:#8d939b;margin-bottom:23px;font-size:14px}.hero h1{font-size:clamp(46px,5.05vw,73px);line-height:1.07;font-weight:500;max-width:1130px;letter-spacing:-.052em}.hero-bottom{display:flex;justify-content:space-between;align-items:flex-end;gap:34px;margin-top:27px}.hero-bottom>p{font-size:14px;line-height:1.65;color:#898f97;max-width:700px}.hero-bottom>.text-action{font-size:13px;padding-bottom:5px;color:#b4bac2}.hero-motion-controls{position:absolute;right:max(56px,calc((100vw - 1216px)/2));top:110px;display:flex;align-items:center;gap:16px;z-index:4;color:#737d88;font-size:10px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.scene-ticks{display:flex;gap:4px}.scene-ticks i{width:12px;height:1px;background:#363c43;transition:background .3s}.scene-ticks i.active{background:#cad4dd}.motion-toggle{border:1px solid #393e45;border-radius:50%;width:30px;height:30px;display:grid;place-items:center;background:#10131966}.pause-glyph{display:block;width:8px;height:9px;border-left:2px solid #8f9aa6;border-right:2px solid #8f9aa6}.motion-toggle[aria-pressed="true"] .pause-glyph{border:0;border-top:5px solid transparent;border-bottom:5px solid transparent;border-left:7px solid #8f9aa6;width:0;height:0;margin-left:2px}
.foundation-facts{display:grid;grid-template-columns:1.1fr 1fr 1.15fr auto;gap:50px;align-items:center;padding-top:45px;padding-bottom:45px;border-bottom:1px solid var(--line)}.foundation-facts>p{font-size:15px;line-height:1.65;color:#b6b9c0}.foundation-facts>p>span{color:#646b74}.foundation-facts>div{display:flex;align-items:center;gap:18px}.foundation-facts strong{font-size:28px;line-height:1;font-weight:500;letter-spacing:-1px;white-space:nowrap}.foundation-facts>div>span{color:#6f7781;font-size:11px;line-height:1.6;max-width:137px}.foundation-facts .text-action{font-size:12px}
/* Editorial progression and large, precisely staged illustrations. */
.section{padding-top:148px;scroll-margin-top:100px}.section-intro{display:grid;grid-template-columns:1fr 1fr;gap:84px;margin:0 30px 85px}.section-intro .eyebrow{font-size:11px;margin-bottom:26px;color:#777f89}.section h2{font-size:40px;line-height:1.13;font-weight:500;letter-spacing:-.042em}.intro-description{padding-top:43px}.intro-description>p{color:#a2a7af;font-size:17px;line-height:1.7;letter-spacing:-.02em}.reveal{opacity:1;transform:none}.js-motion .reveal{opacity:0;transform:translateY(30px);transition:opacity 1s ease,transform 1.15s var(--ease)}.js-motion .reveal.is-visible{opacity:1;transform:none}.studio-scene{position:relative;height:660px;border:1px solid #54585c;border-bottom:0;border-radius:9px 9px 0 0;overflow:hidden;background:linear-gradient(150deg,#62686d 0%,#41464b 27%,#2d3136 58%,#101316 100%);--progress:0;isolation:isolate}.studio-light{position:absolute;inset:0;background:radial-gradient(ellipse at 45% 0%,#d5dee333,transparent 63%);pointer-events:none}.studio-grid{position:absolute;inset:0;opacity:.12;background:linear-gradient(#959da329 1px,transparent 1px),linear-gradient(90deg,#959da329 1px,transparent 1px);background-size:80px 80px;mask-image:linear-gradient(black,transparent 70%)}.study-label{position:absolute;left:35px;right:35px;top:27px;color:#c0c4c9;font-size:8px;letter-spacing:.13em;display:flex;justify-content:space-between}.study-label>span{color:#9da4aa}.studio-window{position:absolute;border:1px solid #3b3d40;border-radius:10px 10px 0 0;background:#111314;box-shadow:0 0 0 1px #090b0c20,0 30px 60px #0005,0 1px 0 #ffffff07 inset;overflow:hidden;will-change:transform}.window-top{display:flex;align-items:center;gap:11px;padding:18px 22px;border-bottom:1px solid #252829;color:#b5bbc2;font-size:12px;white-space:nowrap}.window-top>span:last-child:not(:first-child){margin-left:auto;color:#6b727c;font-size:9px}.window-top>svg{width:15px;height:15px;color:#939ead}.window-icon{font-size:19px;line-height:12px;color:#89979a}.window-body{padding:32px 38px}.window-body h3{font-size:24px;line-height:1.25;letter-spacing:-.5px;margin-top:13px;margin-bottom:27px;color:#d7dbe0}.observation-window{left:8%;top:24%;width:53%;height:500px;transform:translate3d(calc(var(--progress)*-20px),calc(var(--progress)*-18px),0)}.construction-window{left:34%;top:13%;width:61%;height:570px;transform:translate3d(calc(var(--progress)*-12px),calc(var(--progress)*9px),0)}.observation-window .window-body{padding:27px 28px}.observation-window h3{font-size:19px;max-width:330px}.observation-row{display:flex;align-items:flex-start;gap:13px;margin-top:25px;color:#7e8790;max-width:290px}.observation-row .initial{flex-shrink:0;font-size:10px;border:1px solid #333a40;border-radius:5px;padding:6px;line-height:1;background:#1c2023;color:#8e9ba6}.observation-row strong{font-size:11px;font-weight:500;color:#a8b1ba}.observation-row p{font-size:12px;line-height:1.6;margin-top:6px}.observation-row small{font-size:9px;color:#616e7a;display:block;margin-top:5px;line-height:1.6}.observation-highlight{opacity:.45;transition:opacity 1.5s}.method-studio[data-beat="1"] .observation-highlight,.method-studio[data-beat="2"] .observation-highlight,.method-studio[data-beat="3"] .observation-highlight{opacity:1}.construction-step{display:flex;gap:14px;align-items:center;padding:17px 0;border-top:1px solid #25292d;opacity:.48;transition:opacity 1.4s,transform 1.8s;transform:translateY(4px)}.step-marker{border:1px solid #363d43;border-radius:50%;width:24px;height:24px;display:grid;place-items:center;flex-shrink:0;font-size:9px;color:#8d99a6}.construction-step strong{font-size:12px;font-weight:500;color:#b8c0ca}.construction-step p{font-size:11px;line-height:1.55;color:#7f8c98;margin-top:5px}.step-check{margin-left:auto;color:#8faaa0;opacity:0;transition:opacity 1.4s}.construction-step:nth-of-type(1){opacity:1;transform:none}.method-studio[data-beat="1"] .construction-step:nth-of-type(2),.method-studio[data-beat="2"] .construction-step,.method-studio[data-beat="3"] .construction-step{opacity:1;transform:none}.method-studio[data-beat="1"] .construction-step:nth-of-type(1) .step-check,.method-studio[data-beat="2"] .step-check,.method-studio[data-beat="3"] .step-check{opacity:1}.construction-output{display:flex;gap:12px;align-items:center;padding:17px;background:linear-gradient(105deg,#1b2822,#171c1a);border:1px solid #34493e;border-radius:6px;margin-top:15px;opacity:.2;transform:translateY(12px);transition:opacity 2s,transform 2s var(--ease)}.construction-output strong{display:block;font-size:12px;font-weight:500;color:#aabfb3}.construction-output span{display:block;font-size:10px;margin-top:5px;color:#6f8b7c}.construction-output svg{color:#9fbcac}.method-studio[data-beat="3"] .construction-output{opacity:1;transform:none}.scene-floor{position:absolute;inset:60% 0 0;background:linear-gradient(transparent,#101214 92%);pointer-events:none;z-index:5}.scene-progress{position:absolute;bottom:26px;left:8%;right:8%;display:flex;gap:15px;align-items:center;justify-content:center;z-index:6;color:#7a858f;font-size:9px}.scene-progress i{height:1px;width:70px;background:#353e45}.scene-caption{display:flex;justify-content:space-between;gap:20px;padding:18px 0 0;font-size:11px;color:#828a95}.scene-caption>span:last-child{color:#4f5965;font-size:10px;white-space:nowrap}.feature-pair{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:8px;margin-top:70px;overflow:hidden}.feature-cell{padding:0 38px 38px;min-width:0}.feature-cell+.feature-cell{border-left:1px solid var(--line)}.feature-cell 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@keyframes taxonomy-drift{0%,100%{translate:-10px 0;filter:brightness(.7)}25%{translate:9px -5px;filter:brightness(1)}55%{translate:16px 3px;filter:brightness(1.1)}80%{translate:-2px 6px;filter:brightness(.85)}}
@keyframes equation-float{0%,100%{translate:-12px 0}35%{translate:15px -13px}70%{translate:3px 9px}}
@keyframes row-breathe{0%,100%{background:#1b302a25}30%,55%{background:#1b302a76}80%{background:#1b302a38}}
.motion-paused *, .motion-scene:not(.motion-visible) *{animation-play-state:paused!important}.motion-scene{--progress:0}.motion-paused .caret{opacity:.3}
@media(min-width:1600px){.hero{height:960px;min-height:960px}.hero-copy{padding-top:540px}.shot-world{top:50px;--world-fit:1.15}.hero h1{font-size:73px}}
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