._lesson_krzhn_1{--black:#030404;--white:#f3f2eb;--acid:#d0ff45;--muted:#f3f2eb94;--faint:#f3f2eb4d;--rule:#f3f2eb29;--panel-left:clamp(22px, 6vw, 108px);min-height:100svh;color:var(--white);background:var(--black);font-family:var(--font-body);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}._world_krzhn_16{height:760svh;position:relative}._sticky_krzhn_21{top:var(--header-height,0px);width:100%;height:calc(100svh - var(--header-height,0px));isolation:isolate;background:var(--black);position:sticky;overflow:hidden}._canvas_krzhn_31{z-index:0;width:100%;height:100%;display:block;position:absolute;inset:0}._vignette_krzhn_40{z-index:1;pointer-events:none;background:linear-gradient(90deg,#030404d1 0%,#0304048c 30%,#03040400 58%),linear-gradient(#030404b3 0%,#03040400 22% 70%,#030404e6 100%);position:absolute;inset:0}._grain_krzhn_50{z-index:2;pointer-events:none;opacity:.16;mix-blend-mode:soft-light;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.5'/></svg>");position:absolute;inset:-2%}._label3d_krzhn_62{z-index:4;border-left:1px solid var(--acid);color:var(--acid);font-family:var(--font-mono);letter-spacing:.16em;white-space:nowrap;pointer-events:none;will-change:transform;gap:3px;padding-left:10px;font-size:8.5px;transition:opacity .18s;display:grid;position:absolute;top:0;left:0;transform:translate(-9999px,-9999px)}._label3d_krzhn_62 span{color:var(--muted)}._topline_krzhn_88{z-index:6;font-family:var(--font-body);letter-spacing:.01em;color:var(--muted);align-items:center;gap:18px;font-size:.875rem;display:flex;position:absolute;top:clamp(16px,2.6vh,28px);right:clamp(20px,3.5vw,62px)}._topline_krzhn_88 button{min-height:44px;color:var(--white);font:inherit;letter-spacing:inherit;cursor:pointer;background:0 0;border:0;border-bottom:1px solid #0000;padding:0 4px}._topline_krzhn_88 button:hover,._topline_krzhn_88 button[aria-pressed=true]{color:var(--acid);border-bottom-color:var(--acid)}._modelNote_krzhn_120{z-index:6;text-align:right;max-width:44ch;font-family:var(--font-body);letter-spacing:.01em;color:var(--muted);margin:0;font-size:.75rem;line-height:1.5;transition:opacity .12s linear;position:absolute;top:clamp(58px,9vh,76px);right:clamp(20px,3.5vw,62px)}._modelNote_krzhn_120 b{color:var(--acid);font-weight:500}._rail_krzhn_141{z-index:8;gap:14px;display:grid;position:absolute;top:50%;right:clamp(20px,3.5vw,62px);transform:translateY(-50%)}._chapterPicker_krzhn_151{display:none}._rail_krzhn_141 button{width:168px;min-height:34px;color:var(--muted);font-family:var(--font-body);letter-spacing:.01em;cursor:pointer;background:0 0;border:0;justify-content:flex-end;align-items:center;gap:10px;padding:0;font-size:.875rem;display:flex}._rail_krzhn_141 button i{background:currentColor;width:8px;height:1px;transition:width .18s,color .18s;display:block}._rail_krzhn_141 button ._railName_krzhn_178{opacity:1;transition:opacity .18s}._rail_krzhn_141 button:hover ._railName_krzhn_178,._rail_krzhn_141 button._active_krzhn_184 ._railName_krzhn_178{opacity:1}._rail_krzhn_141 button._active_krzhn_184{color:var(--acid)}._rail_krzhn_141 button._active_krzhn_184 i,._rail_krzhn_141 button:hover i{width:24px}._progressLine_krzhn_197{z-index:8;background:#f3f2eb1f;height:1px;position:absolute;bottom:0;left:0;right:0}._progressLine_krzhn_197 span{background:var(--acid);height:1px;display:block}._hero_krzhn_215{z-index:5;left:var(--panel-left);max-width:min(78vw,980px);transition:opacity 80ms linear;position:absolute;top:50%;transform:translateY(-50%)}._kicker_krzhn_225{color:var(--acid);font-family:var(--font-mono);letter-spacing:.3em;margin:0;font-size:clamp(.58rem,.8vw,.72rem)}._hero_krzhn_215 h1,._hero_krzhn_215 h2{font-family:var(--font-milo);letter-spacing:.005em;text-wrap:balance;margin:clamp(14px,2.4vh,26px) 0 0;padding-block:.06em .12em;font-size:clamp(2.6rem,6.4vw,7.4rem);font-weight:400;line-height:1.1}._hero_krzhn_215 h1 em,._hero_krzhn_215 h2 em,._finale_krzhn_247 h2 em{color:#0000;font-family:var(--font-brand);letter-spacing:-.05em;-webkit-text-stroke:1px #f3f2ebc7;font-style:normal}._panel_krzhn_255 h2 em{color:var(--acid);letter-spacing:inherit;-webkit-text-stroke:0;font-family:inherit;font-style:normal}._deck_krzhn_263{max-width:54ch;font-family:var(--font-body);color:#f3f2ebdb;margin:clamp(20px,3.2vh,34px) 0 0;font-size:clamp(1.05rem,1.45vw,1.35rem);line-height:1.5}._deck_krzhn_263 b{color:var(--acid);font-weight:400}._heroActions_krzhn_277{flex-wrap:wrap;gap:12px;margin-top:clamp(24px,4vh,40px);display:flex}._heroActions_krzhn_277 button,._heroActions_krzhn_277 a,._finale_krzhn_247 a,._finale_krzhn_247 button{min-height:44px;color:var(--white);font-family:var(--font-body);letter-spacing:.01em;cursor:pointer;background:0 0;border:1px solid #f3f2eb52;align-items:center;gap:10px;padding:0 18px;font-size:.875rem;text-decoration:none;transition:border-color .15s,color .15s,background .15s;display:inline-flex}._heroActions_krzhn_277 button:first-child{background:var(--acid);border-color:var(--acid);color:var(--black)}._heroActions_krzhn_277 button:hover,._heroActions_krzhn_277 a:hover,._finale_krzhn_247 a:hover,._finale_krzhn_247 button:hover{border-color:var(--acid);color:var(--acid)}._heroActions_krzhn_277 button:first-child:hover{color:var(--black);background:#e4ff8a}._gesture_krzhn_323{z-index:6;color:var(--muted);font-family:var(--font-mono);letter-spacing:.22em;justify-items:center;gap:10px;font-size:8px;transition:opacity .12s linear;display:grid;position:absolute;bottom:clamp(30px,6vh,56px);left:50%;transform:translate(-50%)}._gesture_krzhn_323 i{background:linear-gradient(180deg, transparent, var(--acid));width:1px;height:38px;animation:1.8s ease-in-out infinite _wave-gesture_krzhn_1;display:block}@keyframes _wave-gesture_krzhn_1{0%,to{opacity:.4;transform-origin:top;transform:scaleY(.6)}50%{opacity:1;transform-origin:top;transform:scaleY(1)}}._panel_krzhn_255{z-index:5;left:var(--panel-left);scrollbar-width:thin;scrollbar-color:#f3f2eb40 transparent;will-change:opacity, transform;width:min(44vw,620px);max-width:calc(100vw - 44px);max-height:calc(100% - 208px);padding-right:12px;transition:opacity 80ms linear;position:absolute;top:45%;overflow:auto;transform:translateY(-50%)}._eyebrow_krzhn_371{color:var(--acid);font-family:var(--font-mono);letter-spacing:.08em;margin:0;font-size:.75rem}._panel_krzhn_255 h2{font-family:var(--font-display);letter-spacing:-.025em;white-space:nowrap;margin:6px 0 0;padding-block:.06em .12em;font-size:clamp(1.3rem,min(2.45vw,4vh),3rem);font-weight:600;line-height:1.1}._plain_krzhn_390{max-width:52ch;font-family:var(--font-body);color:#f3f2ebe0;margin:clamp(6px,1vh,10px) 0 0;font-size:clamp(1rem,1.12vw,1.1rem);line-height:1.48}._question_krzhn_399{max-width:38ch;color:var(--acid);font:clamp(1.125rem, 1.5vw, 1.4rem)/1.35 var(--font-body);text-wrap:pretty;margin:8px 0 0}._formal_krzhn_407>summary{min-height:44px;color:var(--white);font:.875rem/1.5 var(--font-mono);cursor:pointer;align-content:center}._formal_krzhn_407>summary:hover{color:var(--acid)}._formal_krzhn_407>summary:focus-visible{outline:2px solid var(--acid);outline-offset:-2px}._formal_krzhn_407[open]>summary{margin-bottom:16px}._operator_krzhn_419{border-top:1px solid var(--rule);margin-top:6px;padding-top:4px}._tier_krzhn_425{color:var(--muted);font-family:var(--font-mono);letter-spacing:.22em;margin:0 0 4px;font-size:12px}._operator_krzhn_419 p:not(._tier_krzhn_425){max-width:56ch;font-family:var(--font-machine);color:#f3f2ebcc;margin:0;font-size:1rem;line-height:1.55}._formal_krzhn_407{border-top:1px solid var(--rule);margin-top:6px;padding-top:4px}._equation_krzhn_448{font-family:var(--font-math);color:var(--white);margin:0;font-size:clamp(.92rem,min(1.3vw,2.2vh),1.28rem);line-height:1.45}._equation_krzhn_448 i{font-style:italic}._equation_krzhn_448 small{font-family:var(--font-body);letter-spacing:normal;color:var(--muted);margin-bottom:10px;font-size:.875rem;line-height:1.5;display:block}._readouts_krzhn_470{grid-template-columns:repeat(auto-fit,minmax(104px,1fr));gap:7px 14px;margin:4px 0 0;display:grid}._readouts_krzhn_470 div{gap:3px;display:grid}._readouts_krzhn_470 dt{color:var(--muted);font-family:var(--font-mono);letter-spacing:.04em;font-size:.75rem}._readouts_krzhn_470 dd{font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--white);white-space:nowrap;margin:0;font-size:clamp(.8rem,min(1.05vw,1.85vh),1.02rem)}._readouts_krzhn_470 dd small{color:var(--muted);margin-left:4px;font-size:.68em}._readouts_krzhn_470 dd._acid_krzhn_504{color:var(--acid)}._status_krzhn_508{color:var(--muted);font-family:var(--font-body);letter-spacing:normal;margin:4px 0 0;font-size:.875rem;line-height:1.5}._status_krzhn_508 b{color:var(--acid);font-weight:500}._derivation_krzhn_522{font-family:var(--font-machine);margin-top:4px}._derivation_krzhn_522 summary{min-height:44px;color:var(--white);font-family:var(--font-body);letter-spacing:normal;cursor:pointer;align-items:center;gap:8px;font-size:.875rem;list-style:none;display:inline-flex}._derivation_krzhn_522 summary::-webkit-details-marker{display:none}._derivation_krzhn_522 summary:before{content:"+";color:var(--acid)}._derivation_krzhn_522[open] summary:before{content:"−"}._derivation_krzhn_522 p{color:#f3f2ebbd;max-width:56ch;margin:6px 0 0;font-size:clamp(.8rem,.95vw,.92rem);line-height:1.6}._derivation_krzhn_522 cite{color:var(--muted);font-style:normal}._scrub_krzhn_568{border:0;border-bottom:1px dashed var(--acid);color:var(--acid);font-family:var(--font-mono);font-variant-numeric:tabular-nums;cursor:ew-resize;touch-action:none;-webkit-user-select:none;user-select:none;background:0 0;align-items:baseline;gap:4px;margin:0 2px;padding:0 2px;font-size:1em;display:inline-flex}._scrub_krzhn_568:hover,._scrub_krzhn_568:focus-visible,._scrub_krzhn_568[data-dragging=true]{background:#d0ff451f;outline:none}._scrub_krzhn_568:focus-visible{box-shadow:0 0 0 2px #d0ff4580}._scrub_krzhn_568 small{color:var(--white);opacity:.7;font-size:.72em}._scrubHint_krzhn_604{color:var(--faint);font-family:var(--font-mono);letter-spacing:.16em;margin-top:8px;font-size:8px;display:block}._toggle_krzhn_613{min-height:44px;color:var(--white);font-family:var(--font-body);letter-spacing:normal;cursor:pointer;background:0 0;border:0;align-items:center;gap:8px;margin-top:8px;padding:0;font-size:.875rem;display:inline-flex}._toggle_krzhn_613 i{border:1px solid var(--muted);border-radius:6px;width:22px;height:10px;display:inline-block;position:relative}._toggle_krzhn_613 i:after{content:"";background:var(--muted);border-radius:50%;width:6px;height:6px;transition:transform .15s,background .15s;position:absolute;top:1px;left:1px}._toggle_krzhn_613[aria-pressed=true] i{border-color:var(--acid)}._toggle_krzhn_613[aria-pressed=true] i:after{background:var(--acid);transform:translate(12px)}._handoff_krzhn_661{z-index:6;left:max(var(--panel-left), 168px);font-family:var(--font-mono);letter-spacing:.04em;color:var(--muted);flex-wrap:wrap;align-items:center;gap:8px 22px;font-size:.75rem;transition:opacity .12s linear;display:flex;position:absolute;bottom:clamp(30px,5.5vh,52px);right:clamp(20px,3.5vw,62px)}._handoff_krzhn_661>span:first-child{color:var(--acid)}._handoff_krzhn_661 b{color:var(--white);font-variant-numeric:tabular-nums;font-weight:500}._handoff_krzhn_661 em{color:var(--acid);font-style:normal}._profile_krzhn_695{z-index:6;left:max(var(--panel-left), 168px);pointer-events:none;opacity:.9;height:46px;position:absolute;bottom:clamp(62px,10vh,92px);right:clamp(20px,3.5vw,62px)}._profile_krzhn_695 canvas{width:100%;height:100%;display:block}._fallback_krzhn_712 ._profile_krzhn_695{opacity:1;height:42vh;top:50%;bottom:auto;transform:translateY(-50%)}._fallbackNote_krzhn_720{z-index:6;left:var(--panel-left);max-width:50ch;color:var(--muted);font-family:var(--font-body);letter-spacing:normal;font-size:.875rem;line-height:1.5;position:absolute;top:clamp(90px,14vh,130px)}._finale_krzhn_247{z-index:5;left:var(--panel-left);max-width:min(72vw,900px);transition:opacity 80ms linear;position:absolute;top:50%;transform:translateY(-50%)}._finale_krzhn_247 h2{font-family:var(--font-milo);letter-spacing:.005em;margin:12px 0 0;padding-block:.06em .12em;font-size:clamp(2.2rem,5vw,5.6rem);font-weight:400;line-height:1.12}._finaleMethod_krzhn_755{max-width:60ch;color:var(--muted);font-family:var(--font-body);letter-spacing:normal;margin:clamp(18px,3vh,30px) 0 0;font-size:1rem;line-height:1.55}._finaleMethod_krzhn_755 b{color:var(--acid);font-weight:500}._finaleActions_krzhn_770{flex-wrap:wrap;gap:12px;margin-top:clamp(22px,3.6vh,36px);display:flex}._after_krzhn_779{z-index:2;padding:clamp(48px, 6vw, 80px) var(--panel-left) clamp(90px, 12vw, 170px);border-top:1px solid var(--rule);background:linear-gradient(145deg,#030404,#0b0e0d 52%,#030404);grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:clamp(28px,4vw,56px);display:grid;position:relative}._after_krzhn_779 article{border-top:1px solid var(--rule);align-content:start;gap:10px;padding-top:16px;display:grid}._after_krzhn_779 article h2{color:var(--acid);font-family:var(--font-mono);letter-spacing:.08em;margin:0;font-size:.75rem}._after_krzhn_779 article strong{font-family:var(--font-display);letter-spacing:-.025em;font-size:clamp(1.1rem,1.5vw,1.5rem);font-weight:600}._after_krzhn_779 article p:not(:first-child){font-family:var(--font-machine);color:#f3f2ebbd;margin:0;font-size:.94rem;line-height:1.6}._after_krzhn_779 article a{min-height:44px;color:var(--white);font-family:var(--font-body);letter-spacing:normal;align-items:center;gap:8px;font-size:.875rem;text-decoration:none;display:inline-flex}._after_krzhn_779 article a:hover{color:var(--acid)}._srOnly_krzhn_837{clip:rect(0, 0, 0, 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}@media (height<=800px) and (width>=901px){._panel_krzhn_255 h2{font-size:clamp(1.3rem,min(2.45vw,3.8vh),2.4rem)}._plain_krzhn_390{font-size:1rem;line-height:1.42}._operator_krzhn_419 p:not(._tier_krzhn_425){font-size:1rem;line-height:1.5}._equation_krzhn_448{font-size:.95rem}._derivation_krzhn_522 summary{min-height:24px}._tier_krzhn_425{margin-bottom:5px}}@media (width<=900px){._lesson_krzhn_1{--panel-left:20px}._hero_krzhn_215,._panel_krzhn_255,._finale_krzhn_247{width:calc(100vw - 40px);max-width:none;top:auto;bottom:clamp(120px,20vh,170px);transform:none}._hero_krzhn_215 h1,._hero_krzhn_215 h2{white-space:nowrap;font-size:clamp(1.15rem,5.9vw,3.6rem)}._panel_krzhn_255 h2{white-space:normal;font-size:clamp(1rem,5vw,1.65rem)}._finale_krzhn_247 h2{white-space:nowrap;font-size:clamp(1.2rem,6.1vw,3.6rem)}._plain_krzhn_390,._operator_krzhn_419 p:not(._tier_krzhn_425),._derivation_krzhn_522 p{font-size:1rem}._readouts_krzhn_470{grid-template-columns:repeat(2,minmax(0,1fr))}._rail_krzhn_141{display:none}._panel_krzhn_255{max-height:calc(100% - 226px);bottom:166px}._chapterPicker_krzhn_151{z-index:8;color:var(--muted);font:12px var(--font-mono);align-items:center;gap:12px;display:flex;position:absolute;bottom:112px;left:20px;right:20px}._chapterPicker_krzhn_151 select{min-width:0;min-height:44px;color:var(--white);border:1px solid var(--rule);font:14px var(--font-machine);background:#090d0c;flex:1;padding:8px 12px}._chapterPicker_krzhn_151 select:focus-visible{outline:2px solid var(--acid);outline-offset:2px}._topline_krzhn_88{gap:12px;top:14px;right:14px}._modelNote_krzhn_120{display:none}._handoff_krzhn_661{gap:6px 14px;font-size:8px;bottom:22px}._profile_krzhn_695{height:34px;bottom:64px}._after_krzhn_779{padding-inline:20px}}@media (prefers-reduced-motion:reduce){._gesture_krzhn_323 i{animation:none}._hero_krzhn_215,._panel_krzhn_255,._finale_krzhn_247,._modelNote_krzhn_120,._handoff_krzhn_661,._label3d_krzhn_62{transition:none}}
