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iframe{pointer-events:none}.lenis.lenis-autoToggle{transition-behavior:allow-discrete;transition-property:overflow;transition-duration:1ms}@property --accent{syntax:"<color>";inherits:true;initial-value:#6f9bff}@property --accent-2{syntax:"<color>";inherits:true;initial-value:#8fd8ff}:root{--bg:#02030a;--ink:#eaf2ff;--ink-2:#e2eeffad;--ink-3:#e2eeff66;--line:#96beff33;--blue:#3d7bff;--cyan:#8fd8ff;--amber:#ffae52;--f-display:"Unbounded Variable", "Unbounded", "Arial Black", system-ui, sans-serif;--f-body:"Manrope Variable", "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;--pad:clamp(18px, 3vw, 44px);--top:calc(var(--pad) * 2 + 44px);--safe-b:max(var(--pad), env(safe-area-inset-bottom));--cue-space:50px;--bottom:calc(var(--safe-b) + var(--cue-space));--ease:cubic-bezier(.16, 1, .3, 1)}*,:before,:after{box-sizing:border-box}html{background:var(--bg);color:var(--ink);-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;scrollbar-width:none}html::-webkit-scrollbar{display:none}body{font-family:var(--f-body);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;font-size:16px;line-height:1.5;overflow-x:hidden}body.is-loading{height:100%;overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:0;padding:0}ul,ol,dl,dd,h1,h2,h3,p{margin:0;padding:0;list-style:none}:focus-visible{outline:1px solid var(--cyan);outline-offset:4px}::selection{background:var(--blue);color:#fff}#gl{width:100vw;height:100vh;z-index:0;touch-action:pan-y;height:100lvh;display:block;position:fixed;inset:0}.loader{z-index:50;padding:var(--pad);padding-bottom:max(var(--pad), env(safe-area-inset-bottom));pointer-events:none;flex-direction:column;justify-content:flex-end;display:flex;position:fixed;inset:0}.loader__fallback-logo{opacity:0;width:min(62vw,520px);color:var(--ink);position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.no-webgl .loader__fallback-logo{opacity:1}.loader__fallback-logo svg{width:100%;height:auto;display:block}.loader__bottom{gap:12px;width:100%;display:grid;position:relative}.loader__progress{color:var(--ink-2);justify-content:space-between;align-items:baseline;font-size:13px;display:flex}.loader__count{font-family:var(--f-display);color:var(--ink);font-variant-numeric:tabular-nums;font-size:13px}.loader__bar{background:var(--line);height:1px;overflow:hidden}.loader__bar i{background:linear-gradient(90deg, var(--blue), var(--cyan));transform-origin:0;width:100%;height:100%;display:block;transform:scaleX(0)}.loader__age{color:var(--ink-3);text-align:center;font-size:11px}.loader__age--inline{margin-top:-6px}.loader__enter{opacity:0;visibility:hidden;flex-direction:column;align-items:center;gap:24px;width:max-content;margin-inline:auto;display:flex;position:fixed;top:calc(50% + min(14vh,20vw));left:0;right:0}.loader.is-ready .loader__enter{pointer-events:auto}.btn-enter{text-align:center;isolation:isolate;border-radius:50%;place-content:center;gap:2px;width:clamp(96px,13vh,124px);height:clamp(96px,13vh,124px);display:grid;position:relative}.btn-enter__ring{transition:transform .6s var(--ease), border-color .4s, box-shadow .6s;z-index:-1;background:radial-gradient(circle at 50% 40%,#3d7bff3d,#3d7bff05 70%);border:1px solid #8fd8ff73;border-radius:50%;position:absolute;inset:0;box-shadow:0 0 40px #3d7bff40,inset 0 0 30px #8fd8ff1f}.btn-enter:after{content:"";animation:pulse 2.4s var(--ease) 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.3s;display:flex}.menu-btn:hover{border-color:#8fd8ff99}.menu-btn__icon{background:var(--ink);border-radius:50%;place-content:center;gap:4px;width:28px;height:28px;display:grid}.menu-btn__icon i{background:var(--bg);width:10px;height:1.5px;transition:transform .5s var(--ease);display:block}.menu-open .menu-btn__icon i:first-child{transform:translateY(2.75px)rotate(45deg)}.menu-open .menu-btn__icon i:last-child{transform:translateY(-2.75px)rotate(-45deg)}.progress{z-index:41;background:linear-gradient(90deg, var(--blue), var(--cyan));transform-origin:0;opacity:0;width:100%;height:2px;transition:opacity .8s var(--ease);display:none;position:fixed;top:0;left:0;transform:scaleX(0)}.is-entered .progress{opacity:.85}.rail{right:calc(var(--pad) + 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solid #c8e1ff73;place-items:center;margin:-19px 0 0 -19px;display:grid}.cursor__ring em{opacity:0;white-space:nowrap;font-size:12px;font-style:normal;font-weight:600;transition:opacity .3s}.cursor.is-hover .cursor__ring{background:#3d7bff14;border-color:#8fd8ffcc;width:64px;height:64px;margin:-32px 0 0 -32px}.cursor.has-label .cursor__ring{width:88px;height:88px;color:var(--bg);background:#eaf2fff0;border-color:#0000;margin:-44px 0 0 -44px}.cursor.has-label .cursor__ring em{opacity:1}.cursor.has-label .cursor__dot{opacity:0}@media (hover:none),(pointer:coarse){.cursor{display:none}}.chapters{z-index:1;position:relative}.chapter{pointer-events:none;position:relative}.stage{padding:var(--top) var(--pad) var(--bottom);pointer-events:none;visibility:hidden;z-index:2;position:fixed;inset:0}.cue{left:50%;bottom:calc(var(--safe-b) - 4px);z-index:30;border:1px solid var(--line);white-space:nowrap;height:38px;color:var(--ink-2);opacity:0;visibility:hidden;transition:opacity .45s var(--ease), transform .7s var(--ease), visibility 0s .45s, border-color .3s;background:#0408188c;border-radius:38px;align-items:center;gap:10px;padding:0 16px 0 6px;font-size:12px;display:inline-flex;position:fixed;transform:translate(-50%,14px)}.cue.is-shown{opacity:1;visibility:visible;transition:opacity .6s var(--ease), transform .8s var(--ease), visibility 0s, border-color .3s;transform:translate(-50%)}.cue:hover,.cue.is-nudge{border-color:#8fd8ff8c}.cue__icon{background:#8fd8ff1a;border-radius:50%;place-items:center;width:26px;height:26px;display:grid;position:relative}.cue__label{align-items:baseline;gap:8px;display:inline-flex}.cue__label b{color:var(--ink);font-weight:600}.cue__label em{color:var(--ink-3);font-style:normal}.cue__label em:before{content:"→ "}.cue__mouse{border:1.5px solid var(--ink);border-radius:6px;width:11px;height:16px;position:relative}.cue__mouse:after{content:"";background:var(--cyan);width:2px;height:3px;animation:wheel 1.6s var(--ease) infinite;border-radius:2px;margin-left:-1px;position:absolute;top:3px;left:50%}@keyframes wheel{0%{opacity:1;transform:translateY(0)}70%{opacity:0;transform:translateY(5px)}to{opacity:0;transform:translateY(0)}}.cue__swipe{width:10px;height:14px;display:none;position:relative}.cue__swipe:before,.cue__swipe:after{content:"";border-left:1.5px solid var(--ink);border-top:1.5px solid var(--ink);width:7px;height:7px;animation:swipe 1.5s var(--ease) infinite;position:absolute;left:1px;transform:rotate(45deg)}.cue__swipe:before{top:2px}.cue__swipe:after{animation-delay:.18s;top:7px}@keyframes swipe{0%{opacity:0;translate:0 5px}40%{opacity:1}to{opacity:0;translate:0 -4px}}.cue__touch{display:none}.cue.is-nudge .cue__icon{animation:nudge-ring 2.2s var(--ease) infinite}@keyframes nudge-ring{0%,to{box-shadow:0 0 #8fd8ff59}60%{box-shadow:0 0 0 9px #8fd8ff00}}@media (hover:none),(pointer:coarse){.cue__mouse,.cue__desk{display:none}.cue__swipe{display:block}.cue__touch{display:inline}}.stage.is-active{visibility:visible}.is-warming .stage{visibility:visible;opacity:.004}.is-warming [data-fade]{visibility:visible!important;opacity:.004!important}.stage{text-shadow:0 1px 18px #02040e8c,0 0 2px #02040e59}.title,.hero__title,.zero__word{text-shadow:0 0 2px #02040e66}.stage .hint{background:#02051273;border-radius:40px;padding:6px 12px 6px 6px}.stage.is-active a,.stage.is-active button,.stage.is-active [data-interactive]{pointer-events:auto}.title{font-family:var(--f-display);letter-spacing:-.04em;font-size:clamp(34px,4.8vw,84px);font-weight:400;line-height:1.02}.title--center{text-align:center}.title--xl{letter-spacing:-.05em;font-size:clamp(44px,8.4vw,156px)}.lead{max-width:34ch;color:var(--ink-2);margin-top:clamp(18px,2.6vh,30px);font-size:clamp(15px,1.15vw,18px);line-height:1.6}.hint{color:var(--ink-2);align-items:center;gap:10px;font-size:13px;display:inline-flex}.hint i{border:1px solid var(--line);border-radius:50%;width:18px;height:18px;position:relative}.hint i:after{content:"";background:var(--cyan);animation:nudge 1.8s var(--ease) infinite;border-radius:50%;position:absolute;inset:5px}@keyframes nudge{0%,to{transform:translate(-3px)}50%{transform:translate(3px)}}[data-split]>span{display:block}.split-mask{margin:-.06em 0 -.12em;padding:.06em 0 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#8fd8ff8c;gap:2px;padding:10px 14px 4px;display:grid;position:relative}.hud__item b{font-family:var(--f-display);letter-spacing:-.03em;font-size:clamp(16px,1.45vw,24px);font-weight:500;line-height:1.1}.hud__item span{color:var(--ink-2);font-size:13px}.hud-lines{z-index:2;pointer-events:none;width:100%;height:100%;position:fixed;inset:0;overflow:visible}.hud-lines path{fill:none;stroke:#8fd8ff66;stroke-width:1px}.hud-lines circle{fill:#8fd8ff1f;stroke:#bee6ffe6;stroke-width:1px}.stage--formula{flex-direction:column;align-items:center;display:flex}.formula__head{text-align:center;flex-direction:column;align-items:center;display:flex}.lead--center{text-align:center;max-width:66ch;margin-top:clamp(12px,1.8vh,20px)}.compound{text-align:center;white-space:nowrap;will-change:transform;justify-items:center;gap:2px;padding-top:16px;display:grid;position:absolute;top:0;left:0}.compound:before{content:"";background:linear-gradient(#8fd8ff00,#8fd8ffcc);width:1px;height:10px;position:absolute;top:0;left:50%}.compound b{font-family:var(--f-display);letter-spacing:-.03em;font-size:clamp(16px,1.4vw,24px);font-weight:400}.compound span{letter-spacing:.06em;color:var(--cyan);font-size:13px;font-weight:600}.compound sub{vertical-align:-.2em;font-size:.72em;line-height:0}.formula__note{left:50%;bottom:var(--bottom);width:min(780px, calc(100% - var(--pad) * 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