/* Nerdit public editorial system. Deliberately scoped away from the study workspace. */
.nerdit-marketing{--mk-cream:#F6F0E6;--mk-deep:#ECE3D5;--mk-paper:#FFFDFC;--mk-ink:#1D1A18;--mk-muted:#766F69;--mk-muted-text:#625B55;--mk-red:#E65B50;--mk-darkred:#B93F38;--mk-red-text:#A43831;--mk-warning:#A86F20;--mk-warning-text:#805119;--mk-soft:#F7D2CC;--mk-line:rgba(29,26,24,.16);--mk-display:'Fraunces',Georgia,'Times New Roman',serif;--mk-ui:'Figtree',Arial,sans-serif;--mk-mono:'JetBrains Mono',Consolas,monospace;background:var(--mk-cream);color:var(--mk-ink);font:400 15px/1.55 var(--mk-ui);width:100%;min-height:100vh;overflow:clip;color-scheme:light}
.nerdit-marketing *{box-sizing:border-box}.nerdit-marketing :is(h1,h2,h3,p,ol,ul){margin:0}.nerdit-marketing button,.nerdit-marketing input{font:inherit}.nerdit-marketing button{cursor:pointer}.nerdit-marketing a{color:inherit;text-decoration:none}.nerdit-marketing button{color:inherit}.nerdit-marketing ::selection{background:var(--mk-soft);color:var(--mk-ink)}.nerdit-marketing :is(button,a,input,summary,[tabindex]):focus-visible{outline:2px solid var(--mk-darkred);outline-offset:5px}.nerdit-marketing .mk-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.mk-skip{position:fixed;top:10px;left:12px;z-index:200;padding:10px 18px;background:var(--mk-ink);color:var(--mk-paper)!important;transform:translateY(-150%)}.mk-skip:focus{transform:translateY(0)}
.mk-header{height:84px;margin:0 3.9%;display:flex;align-items:center;justify-content:space-between;gap:32px;border-bottom:1px solid var(--mk-line)}.mk-wordmark{display:flex;align-items:center;gap:12px;font-size:17px;font-weight:800;letter-spacing:.1em;white-space:nowrap}.mk-mark{color:var(--mk-red);font:italic 600 39px/.8 var(--mk-display);letter-spacing:-.12em;padding-right:6px}.mk-nav{display:flex;align-items:center;gap:32px;font-size:13px}.mk-nav a{position:relative}.mk-nav a:after{content:'';position:absolute;bottom:-5px;left:0;right:0;height:1px;background:var(--mk-darkred);transform:scaleX(0);transform-origin:left;transition:transform .2s}.mk-nav a:hover:after{transform:scaleX(1)}.mk-header-actions{display:flex;align-items:center;gap:24px}.mk-signin{border:0;background:none;font-size:13px!important;padding:8px 0}.mk-btn{display:inline-flex;align-items:center;justify-content:center;gap:21px;background:var(--mk-red);border:1px solid var(--mk-red);border-radius:2px;color:#251612!important;font:700 11px/1.4 var(--mk-mono)!important;letter-spacing:.015em;min-height:53px;padding:15px 20px;transition:background .2s,transform .2s;white-space:normal;text-align:center}.mk-btn:hover{background:#ed7468;transform:translateY(-2px)}.mk-btn-small{min-height:40px;padding:10px 16px;font:600 13px var(--mk-ui)!important;gap:25px}.mk-icon{width:20px;height:20px;flex-shrink:0}.mk-text-link{font:500 10px var(--mk-mono);display:inline-flex;align-items:center;gap:16px;letter-spacing:.025em;padding:12px 0;border-bottom:1px solid var(--mk-ink);width:max-content}.mk-text-link span{font:24px/.5 var(--mk-ui)}.mk-eyebrow{font:500 10px/1.5 var(--mk-mono);letter-spacing:.08em}.mk-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.08fr) 191px;gap:24px;margin:0 3.9%;padding:55px 0 44px;align-items:start;min-height:731px}.mk-hero-copy{padding:10px 0 0;position:relative;z-index:1}.mk-hero h1{font:400 clamp(52px,4.95vw,86px)/1.04 var(--mk-display);letter-spacing:-.065em;margin:16px 0 25px}.mk-hero h1>span{display:block}.mk-hero h1 .mk-nerdit{font-size:1.13em;color:var(--mk-red);letter-spacing:-.065em;margin-bottom:8px}.mk-hero h1 em{font-weight:400}.mk-three-lines{font-size:15px;line-height:1.5;margin-bottom:15px!important}.mk-intro{max-width:335px;font-size:13px;line-height:1.7;color:var(--mk-muted-text)}.mk-hero-ctas{display:flex;align-items:flex-start;flex-direction:column;gap:11px;margin-top:28px}.mk-no-card{font-size:11px;color:var(--mk-muted-text);margin-top:13px!important}.mk-specimen{min-width:0;padding-top:13px}.mk-specimen-top{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:0 4px}.mk-specimen-id{font:8px var(--mk-mono);color:var(--mk-muted-text);white-space:nowrap}.ks-stage{position:relative;height:435px;width:calc(100% + 24px);margin:0 -12px;cursor:grab;touch-action:pan-y;outline-offset:-8px!important;isolation:isolate}.ks-stage.ks-dragging{cursor:grabbing;touch-action:none}.ks-canvas-mount{position:absolute;inset:0;z-index:2;pointer-events:none}.ks-canvas-mount canvas{display:block;width:100%;height:100%}.ks-stage[data-renderer=webgl2] .ks-paper-stack,.ks-stage[data-renderer=webgl2] .ks-shadow{visibility:hidden}.ks-shadow{position:absolute;left:17%;right:7%;bottom:36px;height:56px;background:radial-gradient(ellipse,rgba(64,42,27,.19),rgba(64,42,27,0) 70%);transform:rotate(-12deg)}.ks-paper-stack{position:absolute;left:17%;top:60px;width:61%;height:300px;transform:translate(var(--ks-drag-x,0),var(--ks-drag-y,0)) rotate(calc(-11deg + var(--ks-rotation,0deg)));transition:transform .55s cubic-bezier(.2,.8,.2,1);transform-style:preserve-3d}.ks-paper{--ks-layer:0;position:absolute;inset:0;background:#fffbf5;border:1px solid rgba(86,62,44,.25);box-shadow:0 2px 1px rgba(62,39,23,.08);transform:translate(calc(var(--ks-layer)*-2px),calc(var(--ks-layer)*4px)) rotate(calc(var(--ks-layer)*1.15deg));transition:transform .5s cubic-bezier(.2,.8,.2,1)}.ks-paper-rule{position:absolute;inset:25px;border-top:1px solid var(--mk-line);border-bottom:1px solid var(--mk-line)}.ks-paper.ks-annotation{background:rgba(230,91,80,.2);border-color:rgba(185,63,56,.35)}.ks-active-card{position:absolute;inset:0;z-index:20;padding:27px 23px;background:#fffdfa;border:1px solid rgba(86,62,44,.3);box-shadow:1px 5px 8px rgba(62,39,23,.1);transition:transform .6s cubic-bezier(.2,.8,.2,1);overflow:hidden}.ks-card-eyebrow{font:500 8px var(--mk-mono);color:var(--mk-red-text);padding-bottom:16px;border-bottom:1px solid var(--mk-line)}.ks-active-card h3{font:400 27px/1.13 var(--mk-display);letter-spacing:-.035em;margin:22px 0 6px}.ks-active-card p{font:400 17px/1.2 var(--mk-display);max-width:210px}.ks-active-card .mk-mito{width:90%;height:98px;color:var(--mk-red-text);margin:18px 0}.ks-card-footer{position:absolute;bottom:18px;left:23px;right:23px;display:flex;align-items:center;justify-content:space-between;font:6px var(--mk-mono);border-top:1px solid var(--mk-line);padding-top:10px}.ks-card-footer b{font-size:10px}.ks-recall-slip{position:absolute;top:213px;left:65%;z-index:22;width:159px;min-height:119px;background:var(--mk-soft);padding:18px 15px;transform:rotate(22deg);border:1px solid rgba(185,63,56,.2);box-shadow:0 6px 8px rgba(59,34,20,.1);transition:transform .6s cubic-bezier(.2,.8,.2,1)}.ks-recall-slip>span{font:7px var(--mk-mono)}.ks-recall-slip p{font:400 19px/1.1 var(--mk-display);margin:14px 0!important}.ks-slip-line{display:block;height:1px;background:var(--mk-darkred);width:65px}.ks-is-fanned .ks-paper{transform:translate(calc((var(--ks-layer) - 5)*12px),calc(var(--ks-layer)*6px)) rotate(calc((var(--ks-layer) - 5)*5deg))}.ks-is-fanned .ks-active-card{transform:translate(-36px,-20px) rotate(-10deg)}.ks-is-pulled .ks-active-card{transform:translate(65px,-32px) rotate(9deg)}.ks-is-pulled .ks-recall-slip{transform:translate(-20px,30px) rotate(12deg)}.ks-is-flipped .ks-active-card{background:var(--mk-soft)}.ks-hide-proof .ks-card-footer,.ks-hide-proof .ks-card-eyebrow{color:var(--mk-muted-text)}.ks-coordinate{position:absolute;font:7px/1.7 var(--mk-mono);color:var(--mk-muted-text);z-index:4;pointer-events:none}.ks-coordinate:first-line{font-size:18px;font-weight:400}.ks-coordinate-a{top:55px;left:2%}.ks-coordinate-b{bottom:41px;right:1%}.ks-concept-links{position:absolute;inset:0;width:100%;height:100%;z-index:3;color:var(--mk-red-text);fill:var(--mk-cream);stroke:currentColor;stroke-width:1;opacity:0;pointer-events:none;transition:opacity .2s}.ks-show-links .ks-concept-links{opacity:.75}.ks-tool-row{display:flex;justify-content:center;gap:8px;margin-top:1px;flex-wrap:wrap}.ks-tool{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--mk-line);background:rgba(255,253,252,.45);border-radius:2px;padding:8px 11px;font-size:11px!important;min-height:36px;transition:background .2s}.ks-tool .mk-icon{width:15px;height:15px}.ks-tool[aria-pressed=true]{border-color:var(--mk-red-text);background:var(--mk-soft)}.ks-tool:hover{background:var(--mk-paper)}.ks-rotate{font-size:19px!important;line-height:1;padding:8px 10px}.ks-instructions{text-align:center;font-size:10px;color:var(--mk-muted-text);margin-top:14px!important}.mk-readouts{display:grid;grid-template-columns:40px 1.4fr 1fr 1fr 1fr;gap:12px;margin-top:25px;padding-top:18px;border-top:1px solid var(--mk-line);align-items:center}.mk-demo-label{font:8px/1.6 var(--mk-mono);color:var(--mk-red-text)}.mk-readouts>div>span{display:block;font:7px var(--mk-mono);color:var(--mk-muted-text);margin-bottom:7px}.mk-readouts b{font:400 22px var(--mk-mono);white-space:nowrap;letter-spacing:-.06em}.mk-readouts small{font:9px var(--mk-ui);letter-spacing:0}.mk-readouts [data-demo-source]{font-size:17px;letter-spacing:-.03em}.ks-renderer-note{font:7px/1.5 var(--mk-mono);color:var(--mk-muted-text);margin-top:11px!important;text-align:center;min-height:11px}
.mk-experiment{border-left:1px solid var(--mk-line);padding-left:23px;margin-top:10px}.mk-experiment-heading{display:flex;flex-direction:column;gap:4px;padding-bottom:22px;border-bottom:1px solid var(--mk-line)}.mk-experiment-heading h2{font:500 10px var(--mk-mono);letter-spacing:.07em}.mk-experiment-heading>span{font:italic 19px var(--mk-display);color:var(--mk-muted-text)}.mk-experiment fieldset{border:0;padding:0;margin:24px 0}.mk-experiment legend{font:500 8px var(--mk-mono);letter-spacing:.06em;padding:0;margin-bottom:12px;width:100%}.mk-source-choices{display:grid;grid-template-columns:1fr 1fr;gap:5px}.mk-source-choices button{border:1px solid var(--mk-line);background:transparent;padding:7px 4px;min-height:30px;font:8px var(--mk-mono)!important}.mk-source-choices button[aria-pressed=true]{background:var(--mk-ink);border-color:var(--mk-ink);color:var(--mk-paper)}.mk-mode-choices{display:flex;flex-direction:column;gap:3px}.mk-mode-choices button{display:flex;align-items:center;gap:8px;border:0;background:none;padding:4px 0;font-size:11px!important;text-align:left}.mk-mode-choices button>i{border:1px solid var(--mk-muted);border-radius:100%;width:7px;height:7px}.mk-mode-choices button>span{margin-left:auto;opacity:0}.mk-mode-choices button[aria-pressed=true]{color:var(--mk-red-text)}.mk-mode-choices button[aria-pressed=true]>i{background:var(--mk-darkred);border-color:var(--mk-red-text)}.mk-mode-choices button[aria-pressed=true]>span{opacity:1}.mk-density legend{display:flex;justify-content:space-between}.mk-density output{font-size:10px}.mk-density input{width:100%;height:19px;accent-color:var(--mk-red-text);margin:0}.mk-density>div{display:flex;justify-content:space-between;font:8px var(--mk-mono);color:var(--mk-muted-text);margin-top:4px}.mk-toggle{display:flex;align-items:flex-start;gap:9px;margin:20px 0;cursor:pointer}.mk-toggle input{width:13px;height:13px;accent-color:var(--mk-red-text);margin:2px 0 0}.mk-toggle>span{font:8px/1.7 var(--mk-mono);letter-spacing:.01em}.mk-toggle small{display:block;font:10px/1.5 var(--mk-ui);color:var(--mk-muted-text);margin-top:2px}.mk-experiment-buttons{display:flex;justify-content:space-between;border-block:1px solid var(--mk-line);padding:12px 0;gap:20px}.mk-experiment-buttons button{background:none;border:0;display:flex;align-items:center;gap:10px;font-size:10px!important;padding:2px}.mk-experiment-buttons span{font-size:17px}.mk-inside{font-size:10px;margin-top:22px}.mk-inside summary{display:flex;align-items:center;justify-content:space-between;cursor:pointer;font:8px var(--mk-mono);list-style:none}.mk-inside summary::-webkit-details-marker{display:none}.mk-inside summary>span{font:20px var(--mk-ui);transition:transform .2s}.mk-inside[open] summary>span{transform:rotate(45deg)}.mk-inside ol{list-style:none;padding:0}.mk-inside li{margin-top:16px;padding-top:14px;border-top:1px solid var(--mk-line)}.mk-inside li>span{font:8px var(--mk-mono);color:var(--mk-red-text)}.mk-inside li p{font-size:10px;margin-top:6px!important;color:var(--mk-muted-text)}.mk-ticker{display:flex;align-items:center;justify-content:space-around;gap:24px;margin:0 3.9%;padding:24px 0;border-block:1px solid var(--mk-line);font:500 9px var(--mk-mono);letter-spacing:.07em;white-space:nowrap}.mk-ticker .mk-ticker-star{font:34px/1 var(--mk-ui);color:var(--mk-red)}
.mk-section{margin:0 3.9%;padding:93px 0;border-bottom:1px solid var(--mk-line);scroll-margin-top:32px}.mk-section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:35px;margin-bottom:43px}.mk-section h2,.mk-last-cta h2{font:400 clamp(42px,4.2vw,70px)/1.08 var(--mk-display);letter-spacing:-.05em;margin-top:15px}.mk-section h2 em,.mk-last-cta h2 em{font-weight:400;color:var(--mk-red-text)}.mk-section-heading>p{color:var(--mk-muted-text);font-size:13px;line-height:1.7;max-width:360px;padding-bottom:6px}.mk-process-layout{display:grid;grid-template-columns:1fr 1.35fr;gap:65px;align-items:stretch}.mk-process-steps{display:flex;flex-direction:column}.mk-process-steps>button{display:flex;align-items:center;gap:24px;text-align:left;padding:22px 14px;border:0;border-top:1px solid var(--mk-line);background:transparent}.mk-process-steps>button:last-child{border-bottom:1px solid var(--mk-line)}.mk-process-steps>button>span{font:11px var(--mk-mono);color:var(--mk-muted-text)}.mk-process-steps h3{font:500 12px var(--mk-mono);letter-spacing:.045em}.mk-process-steps p{color:var(--mk-muted-text);font-size:11px;margin-top:7px!important}.mk-process-steps>button>b{margin-left:auto;font-size:19px;font-weight:400;color:var(--mk-muted-text);opacity:0}.mk-process-steps>button[aria-selected=true]{background:var(--mk-paper);border-left:3px solid var(--mk-red);padding-left:11px}.mk-process-steps>button[aria-selected=true]>span{color:var(--mk-red-text)}.mk-process-steps>button[aria-selected=true]>b{opacity:1;color:var(--mk-red-text)}.mk-process-demo{position:relative;background:var(--mk-deep);min-height:464px;display:flex;align-items:center;justify-content:center;padding:56px 35px 32px;overflow:hidden}.mk-process-caption{position:absolute;top:23px;left:25px;right:25px;display:flex;justify-content:space-between;font:8px var(--mk-mono);color:var(--mk-muted-text)}.mk-drop-sheet{position:relative;width:330px;padding:31px 27px;background:var(--mk-paper);border:1px solid var(--mk-line);transform:rotate(-4deg);box-shadow:8px 12px 0 rgba(255,253,252,.5),16px 24px 0 rgba(255,253,252,.25)}.mk-drop-sheet>span{font:8px var(--mk-mono);color:var(--mk-red-text)}.mk-drop-sheet h3{font:400 42px/1.1 var(--mk-display);letter-spacing:-.05em;margin:28px 0!important}.mk-source-tokens{display:flex;flex-wrap:wrap;gap:8px}.mk-source-tokens span{border:1px solid var(--mk-line);padding:4px 9px;font:9px var(--mk-mono)}.mk-drop-sheet p{font-size:10px;color:var(--mk-muted-text);margin-top:25px!important}.mk-sheet-corner{position:absolute;bottom:25px;right:24px;font-size:29px;color:var(--mk-red)}.mk-section-note{font:9px/1.7 var(--mk-mono);color:var(--mk-muted-text);margin-top:20px!important;max-width:840px}.mk-fragment-scene{position:relative;width:100%;max-width:480px;padding:15px 0 15px 126px}.mk-fragment-original{position:absolute;left:-5px;top:0;width:175px;height:262px;background:var(--mk-paper);padding:27px 20px;transform:rotate(-9deg);font:8px var(--mk-mono);border:1px solid var(--mk-line);box-shadow:0 8px 15px rgba(62,39,23,.08)}.mk-fragment-original b{display:block;font:400 24px/1.15 var(--mk-display);margin:30px 0}.mk-fragment-original hr{border:0;border-top:1px solid var(--mk-line);margin:25px 0}.mk-fragment{position:relative;background:var(--mk-paper);border:1px solid var(--mk-line);padding:17px 20px;margin:15px 0;box-shadow:0 4px 8px rgba(62,39,23,.05)}.mk-fragment:nth-of-type(3){transform:translateX(17px)}.mk-fragment:nth-of-type(4){background:var(--mk-soft);transform:translateX(-4px)}.mk-fragment>span{font:7px var(--mk-mono);color:var(--mk-red-text)}.mk-fragment p{font-size:12px;margin-top:9px!important}.mk-build-scene{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:13px;width:100%;max-width:460px;padding-top:25px}.mk-build-source{position:absolute;top:0;left:0;font:9px var(--mk-mono);color:var(--mk-red-text)}.mk-build-scene>div{min-height:136px;background:var(--mk-paper);border:1px solid var(--mk-line);padding:19px;transform:rotate(-3deg)}.mk-build-scene>div:nth-of-type(2){background:var(--mk-soft);transform:translateY(20px) rotate(6deg)}.mk-build-scene>div:nth-of-type(3){transform:rotate(4deg);margin-top:8px}.mk-build-scene>div>span{font:7px var(--mk-mono)}.mk-build-scene h3{font:400 23px/1.1 var(--mk-display);margin-top:22px!important}.mk-build-scene>p{align-self:center;font-size:10px;color:var(--mk-muted-text);max-width:150px;margin-left:15px!important}.mk-process-proof{text-align:center;width:100%;max-width:390px}.mk-process-proof>span{font:8px var(--mk-mono);color:var(--mk-red-text)}.mk-process-proof h3{font:400 35px/1.1 var(--mk-display);margin-top:20px!important}.mk-process-proof-line{font:37px var(--mk-display);margin:10px 0;color:var(--mk-red)}.mk-process-proof button{border:1px solid var(--mk-darkred);background:transparent;font:9px var(--mk-mono)!important;padding:10px 16px;color:var(--mk-red-text)}.mk-process-proof mark{display:block;background:var(--mk-paper);border:1px solid var(--mk-line);font-size:14px;margin:18px 0;padding:18px;transition:background .2s}.mk-process-proof.is-connected mark{background:var(--mk-soft);outline:1px solid var(--mk-darkred)}.mk-process-proof>a{font-size:11px;border-bottom:1px solid var(--mk-ink)}.mk-process-flashcard{display:block;text-align:left;background:var(--mk-paper);border:1px solid var(--mk-line);width:100%;max-width:365px;min-height:270px;padding:30px;transform:rotate(-4deg);box-shadow:9px 12px 0 rgba(255,253,252,.5)}.mk-process-flashcard>span{font:8px var(--mk-mono);color:var(--mk-red-text)}.mk-process-flashcard h3{font:400 38px/1.1 var(--mk-display);margin:30px 0 15px!important;letter-spacing:-.04em}.mk-process-flashcard p{font-size:12px;color:var(--mk-muted-text)}.mk-process-flashcard>b{display:block;font:9px var(--mk-mono);margin-top:30px;color:var(--mk-red-text)}.mk-process-flashcard[aria-pressed=true]{background:var(--mk-soft)}
.mk-proof-layout{display:grid;grid-template-columns:1fr 1fr;gap:10%;align-items:center;padding:0 5%}.mk-source-page{position:relative;background:var(--mk-paper);border:1px solid var(--mk-line);padding:32px 38px 23px;box-shadow:7px 8px 0 #e9dfd0;transform:rotate(-1.6deg)}.mk-page-head{display:flex;justify-content:space-between;font:8px var(--mk-mono);padding-bottom:21px;border-bottom:1px solid var(--mk-line)}.mk-source-page h3{font:400 43px/1.05 var(--mk-display);letter-spacing:-.04em;margin:24px 0 20px!important}.mk-page-subtitle{font:7px var(--mk-mono)!important;color:var(--mk-red-text);margin-bottom:16px!important}.mk-source-page>p{font-size:11px;line-height:1.85;margin:13px 0!important}.mk-source-page mark{background:transparent;color:inherit;transition:background .25s,box-shadow .25s;box-decoration-break:clone;-webkit-box-decoration-break:clone}.mk-source-page mark.mk-passage-active{background:var(--mk-soft);box-shadow:3px 0 var(--mk-soft),-3px 0 var(--mk-soft)}.mk-page-diagram{position:relative;display:flex;align-items:center;gap:15px;margin-top:24px;padding-top:15px;border-top:1px solid var(--mk-line)}.mk-page-diagram .mk-mito{width:70%;max-height:116px;color:var(--mk-red-text)}.mk-page-diagram>span{font:7px/1.8 var(--mk-mono);max-width:65px;color:var(--mk-muted-text)}.mk-page-foot{display:flex;justify-content:space-between;font:6px var(--mk-mono);border-top:1px solid var(--mk-line);padding-top:16px;margin-top:20px}.mk-proof-question{padding:20px 0}.mk-proof-question>h3{font:400 37px/1.17 var(--mk-display);letter-spacing:-.03em;margin:25px 0 40px!important;max-width:390px}.mk-answer-label{font:8px var(--mk-mono);color:var(--mk-muted-text)}.mk-proof-answer{font:400 23px/1.35 var(--mk-display);margin-top:15px!important;max-width:380px}.mk-source-indicator{display:flex;align-items:center;gap:13px;background:transparent;border:1px solid var(--mk-line);border-radius:0;padding:14px 16px;margin-top:30px;width:100%;text-align:left;max-width:330px;transition:border .2s,background .2s}.mk-source-indicator:hover{border-color:var(--mk-red-text);background:var(--mk-soft)}.mk-source-indicator .mk-icon{color:var(--mk-red-text);width:27px;height:27px}.mk-source-indicator span{font:8px var(--mk-mono);color:var(--mk-red-text)}.mk-source-indicator small{display:block;font:12px var(--mk-ui);color:var(--mk-ink);margin-top:5px}.mk-source-indicator b{margin-left:auto;font-size:22px;font-weight:400;color:var(--mk-red-text)}.mk-proof-status{font-size:10px;color:var(--mk-muted-text);margin-top:10px!important}.mk-proof-margin{display:flex;gap:17px;border-top:1px solid var(--mk-line);padding-top:18px;margin-top:46px;max-width:340px}.mk-proof-margin>span{font:8px var(--mk-mono);color:var(--mk-red-text)}.mk-proof-margin p{font-size:10px;color:var(--mk-muted-text);line-height:1.7}.mk-question-section{display:grid;grid-template-columns:1fr 1.17fr;gap:8%;align-items:start}.mk-question-intro{padding-top:15px}.mk-question-intro h2{font-size:clamp(41px,4.1vw,67px);margin:17px 0 28px!important}.mk-question-intro>p:last-of-type{font-size:13px;max-width:310px;color:var(--mk-muted-text);line-height:1.7}.mk-demo-tag{display:block;font:7px/1.5 var(--mk-mono);color:var(--mk-red-text);margin-top:30px}.mk-practice-card{position:relative;background:var(--mk-paper);border:1px solid var(--mk-line);padding:29px 31px 18px;box-shadow:7px 7px 0 var(--mk-deep)}.mk-practice-head{display:flex;justify-content:space-between;font:8px var(--mk-mono);border-bottom:1px solid var(--mk-line);padding-bottom:19px}.mk-practice-card>h3{font:400 30px/1.2 var(--mk-display);letter-spacing:-.025em;max-width:500px;margin:28px 0!important}.mk-options{display:flex;flex-direction:column;gap:9px}.mk-options button{background:transparent;border:1px solid var(--mk-line);padding:11px 15px;display:flex;align-items:center;gap:17px;min-height:51px;text-align:left;font-size:13px!important;transition:background .15s}.mk-options button>span{font:10px var(--mk-mono);color:var(--mk-muted-text);border-right:1px solid var(--mk-line);padding-right:16px}.mk-options button>b{margin-left:auto;font-weight:400;font-size:18px}.mk-options button:hover{background:var(--mk-cream)}.mk-options button.is-answer{border-color:#24765D;background:#e7f1eb}.mk-options button.is-wrong{border-color:var(--mk-red-text);background:var(--mk-soft)}.mk-options button.is-chosen{outline:1px solid currentColor;outline-offset:-3px}.mk-practice-foot{display:flex;justify-content:space-between;align-items:center;gap:15px;border-top:1px solid var(--mk-line);padding-top:17px;margin-top:24px;font:7px var(--mk-mono);color:var(--mk-muted-text)}.mk-practice-foot button{border:0;background:none;font:9px var(--mk-mono)!important;color:var(--mk-red-text);padding:5px 0}.mk-question-feedback:empty{display:none}.mk-question-feedback{border-top:1px solid var(--mk-line);padding-top:21px;margin-top:23px}.mk-answer-result{display:flex;align-items:baseline;gap:12px;margin-bottom:10px}.mk-answer-result b{font:400 27px var(--mk-display)}.mk-answer-result>span{font-size:11px}.mk-answer-result.is-correct{color:#24765D}.mk-answer-result.is-incorrect{color:var(--mk-red-text)}.mk-question-feedback>p{font-size:12px;line-height:1.7}.mk-question-feedback details{margin-top:15px;font-size:11px}.mk-question-feedback summary{cursor:pointer;font-weight:600}.mk-question-feedback dl{margin:15px 0 0}.mk-question-feedback dl>div{border-top:1px solid var(--mk-line);padding:9px 0}.mk-question-feedback dt{font:9px var(--mk-mono);margin-bottom:5px}.mk-question-feedback dd{margin:0;color:var(--mk-muted-text);font-size:10px}.mk-source-indicator-small{font:8px var(--mk-mono)!important;padding:11px;margin-top:15px;max-width:none;color:var(--mk-red-text)}
.mk-feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--mk-line)}.mk-feature-grid article{border-bottom:1px solid var(--mk-line);padding:25px 24px 27px 0;min-height:171px}.mk-feature-grid article:not(:nth-child(4n+1)){border-left:1px solid var(--mk-line);padding-left:24px}.mk-feature-grid article>span{font:8px var(--mk-mono);color:var(--mk-red-text)}.mk-feature-grid h3{font:400 23px/1.2 var(--mk-display);letter-spacing:-.02em;margin:14px 0 9px!important}.mk-feature-grid p{font-size:11px;line-height:1.6;max-width:235px;color:var(--mk-muted-text)}.mk-capability-note{display:block;font:7px/1.6 var(--mk-mono);margin-top:11px;color:var(--mk-red-text)}.mk-tools-note{display:flex;align-items:flex-start;gap:45px;margin-top:29px}.mk-tools-note>b{font:8px var(--mk-mono);white-space:nowrap;padding-top:4px}.mk-tools-note p{font-size:10px;color:var(--mk-muted-text);max-width:670px;line-height:1.7}.mk-pricing-grid{display:grid;grid-template-columns:1.15fr 1fr 1fr;border-block:1px solid var(--mk-line)}.mk-pricing-grid>article{padding:33px 35px 35px;border-left:1px solid var(--mk-line)}.mk-pricing-grid>article:first-child{border-left:0;padding-left:0;padding-right:43px}.mk-plan-label{font:8px var(--mk-mono);color:var(--mk-red-text)}.mk-pricing-grid h3{font:400 43px/1.1 var(--mk-display);letter-spacing:-.035em;margin:25px 0!important}.mk-pricing-grid>article>p{font-size:12px;color:var(--mk-muted-text);line-height:1.8;max-width:290px}.mk-pricing-grid .mk-plan-amount{font:400 45px var(--mk-mono);letter-spacing:-.08em;color:var(--mk-ink);margin-bottom:12px!important}.mk-plan-amount>span{font:14px var(--mk-ui);letter-spacing:0}.mk-trial-plan ul{padding:20px 0;margin:20px 0!important;list-style:none;border-top:1px solid var(--mk-line)}.mk-trial-plan li{font-size:11px;display:flex;gap:10px;margin:8px 0}.mk-trial-plan li:before{content:'✓';color:var(--mk-red-text)}.mk-trial-plan .mk-btn{width:100%;max-width:295px}.mk-payment-status{display:inline-block;font:8px/1.5 var(--mk-mono);padding:8px 10px;border:1px solid var(--mk-darkred);color:var(--mk-red-text);margin:30px 0 17px}.mk-pricing-grid .mk-plan-fine{font-size:10px;color:var(--mk-muted-text);max-width:245px}.mk-pricing-faq{border-bottom:1px solid var(--mk-line);padding:21px 0}.mk-pricing-faq summary{display:flex;justify-content:space-between;cursor:pointer;font-size:13px;list-style:none}.mk-pricing-faq summary>span{font-size:20px}.mk-pricing-faq p{max-width:800px;font-size:12px;line-height:1.8;color:var(--mk-muted-text);margin-top:17px!important}.mk-last-cta{padding:100px 24px 91px;text-align:center}.mk-last-cta h2{margin:16px 0 31px!important;font-size:clamp(42px,5vw,82px)}.mk-last-cta>p{font-size:10px;color:var(--mk-muted-text);margin-top:14px!important}.mk-footer{margin:0 3.9%;padding:27px 0 31px;border-top:1px solid var(--mk-line);display:flex;justify-content:space-between;align-items:center;gap:30px}.mk-footer>span{font:8px var(--mk-mono);color:var(--mk-muted-text)}.mk-footer>a:last-child{font-size:11px}.mk-footer .mk-wordmark{font-size:13px}.mk-footer .mk-mark{font-size:30px}
@media(min-width:1550px){.mk-hero{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr) 205px;gap:38px;padding-top:63px;min-height:793px}.ks-stage{height:490px}.ks-paper-stack{top:74px;height:337px}.mk-hero h1{font-size:80px}.mk-intro{max-width:350px;font-size:14px}.mk-hero-ctas{margin-top:32px}.mk-experiment{padding-left:29px}.mk-experiment-heading{padding-bottom:24px}.mk-experiment fieldset{margin:26px 0}.mk-experiment .mk-toggle{margin:25px 0}.mk-process-layout{gap:95px}.mk-section{padding-block:105px}}
@media(max-width:1199px){.mk-hero{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr) 163px;gap:18px;margin-inline:3%;padding-top:43px}.mk-header{margin-inline:3%;gap:20px}.mk-nav{gap:21px}.mk-hero h1{font-size:55px}.mk-intro{max-width:290px;font-size:12px}.mk-experiment{padding-left:17px}.mk-specimen-id{display:none}.ks-stage{height:389px}.ks-paper-stack{height:259px;left:16%;top:55px}.ks-active-card{padding:22px 18px}.ks-active-card h3{font-size:24px;margin-top:18px}.ks-active-card p{font-size:15px}.ks-active-card .mk-mito{height:75px;margin-top:16px}.ks-recall-slip{width:133px;min-height:105px;top:183px;padding:15px 12px}.ks-recall-slip p{font-size:16px}.ks-card-footer{bottom:15px;left:18px;right:18px;font-size:5px}.ks-tool{padding:7px 8px;font-size:10px!important}.ks-tool-row{gap:5px}.ks-instructions{font-size:9px}.mk-readouts{gap:7px;grid-template-columns:31px 1.4fr 1fr 1fr 1fr}.mk-readouts [data-demo-source]{font-size:13px}.mk-readouts b{font-size:18px}.mk-readouts>div>span{font-size:6px}.mk-demo-label{font-size:7px}.mk-hero-ctas .mk-btn{font-size:9px!important;gap:13px;padding-inline:14px}.mk-three-lines{font-size:14px}.mk-process-layout{gap:35px}.mk-proof-layout{gap:8%;padding-inline:3%}.mk-source-page{padding:27px 28px 22px}.mk-question-section{gap:6%}.mk-practice-card{padding-inline:26px}}
@media(max-width:1023px){.mk-header{height:76px;gap:15px}.mk-nav{gap:18px;font-size:11px}.mk-header-actions{gap:16px}.mk-hero{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:27px;padding-bottom:34px}.mk-hero-copy{grid-row:1 / span 2}.mk-hero h1{font-size:clamp(51px,6.6vw,69px)}.mk-experiment{grid-column:2;border:0;border-top:1px solid var(--mk-line);padding:17px 0 0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:14px 20px}.mk-experiment-heading{border:0;padding:0;grid-column:1/-1;flex-direction:row;justify-content:space-between;align-items:center}.mk-experiment fieldset{margin:0}.mk-experiment legend{margin-bottom:8px}.mk-source-choices{gap:5px}.mk-mode-choices{display:grid;grid-template-columns:1fr 1fr;gap:3px 10px}.mk-mode-choices button{font-size:10px!important}.mk-mode-choices button>span{display:none}.mk-experiment .mk-density{grid-column:1 / -1}.mk-toggle{margin:0!important}.mk-experiment-buttons{grid-column:1 /-1;padding:8px 0}.mk-inside{grid-column:1 /-1;margin-top:0}.ks-stage{height:397px}.mk-hero{min-height:0}.mk-three-lines{margin-top:26px}.mk-intro{font-size:13px}.mk-hero-ctas{margin-top:30px}.mk-hero-ctas .mk-btn{font-size:10px!important}.mk-readouts{margin-top:20px}.mk-ticker{gap:15px;flex-wrap:wrap;font-size:8px;padding-block:18px}.mk-ticker>span:last-child{display:none}.mk-ticker .mk-ticker-star{font-size:26px}.mk-section{padding-block:72px}.mk-section-heading{align-items:start}.mk-section h2{font-size:49px}.mk-section-heading>p{font-size:12px;max-width:270px}.mk-process-layout{gap:28px}.mk-process-steps>button{gap:15px;padding-inline:8px}.mk-process-steps>button[aria-selected=true]{padding-left:5px}.mk-process-steps h3{font-size:10px}.mk-process-steps p{font-size:10px}.mk-process-demo{min-height:418px;padding-inline:25px}.mk-drop-sheet{width:270px;padding:28px 23px}.mk-drop-sheet h3{font-size:36px}.mk-proof-layout{padding:0;gap:6%}.mk-proof-question>h3{font-size:31px}.mk-proof-answer{font-size:21px}.mk-source-page h3{font-size:36px}.mk-source-page>p{font-size:10px}.mk-practice-card>h3{font-size:27px}.mk-question-intro h2{font-size:43px}.mk-question-intro>p:last-of-type{font-size:12px}.mk-feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.mk-feature-grid article:not(:nth-child(4n+1)){border-left:0;padding-left:0}.mk-feature-grid article:not(:nth-child(3n+1)){border-left:1px solid var(--mk-line);padding-left:23px}.mk-pricing-grid>article{padding-inline:25px}.mk-pricing-grid h3{font-size:34px}.mk-pricing-grid>article:first-child{padding-right:30px}.mk-tools-note{gap:28px}.mk-fragment-scene{padding-left:82px}.mk-fragment-original{width:145px}.mk-fragment p{font-size:10px}.mk-fragment{padding:13px}.mk-build-scene>div{padding:15px}.mk-build-scene h3{font-size:20px}.mk-build-scene>p{font-size:9px}}
@media(max-width:767px){.mk-header{margin-inline:5%;height:72px;flex-wrap:wrap;gap:15px}.mk-wordmark{font-size:14px;gap:9px}.mk-mark{font-size:33px}.mk-nav{order:3;width:100%;justify-content:space-between;font-size:10px;gap:13px;border-bottom:1px solid var(--mk-line);padding:0 0 14px}.mk-header{border-bottom:0;height:auto;padding-top:20px}.mk-header-actions{gap:15px}.mk-signin{font-size:11px!important}.mk-btn-small{font-size:11px!important;min-height:33px;padding:8px 12px;gap:15px}.mk-hero{margin-inline:5%;grid-template-columns:minmax(0,1fr);gap:0;padding-top:37px;padding-bottom:30px}.mk-hero-copy{grid-row:auto;max-width:520px}.mk-hero h1{font-size:clamp(54px,10vw,75px);margin:15px 0 22px}.mk-hero h1 .mk-nerdit{font-size:1.08em;margin-bottom:10px}.mk-three-lines{font-size:14px;margin-top:0;line-height:1.5;margin-bottom:14px!important}.mk-intro{font-size:12px;max-width:340px}.mk-hero-ctas{margin-top:23px;flex-direction:row;flex-wrap:wrap;align-items:center;gap:16px}.mk-hero-ctas .mk-btn{font-size:9px!important;padding:13px 15px;min-height:47px}.mk-text-link{font-size:8px;padding:10px 0;gap:10px}.mk-no-card{font-size:10px;margin-top:10px!important}.mk-specimen{margin-top:41px;padding:0}.mk-specimen-top{padding:0}.mk-specimen-id{display:block;font-size:7px}.mk-eyebrow{font-size:8px}.ks-stage{height:405px;max-width:580px;margin-inline:auto;width:100%}.ks-paper-stack{left:20%;width:55%;height:279px;top:52px}.ks-active-card h3{font-size:27px}.ks-active-card p{font-size:17px}.ks-active-card .mk-mito{height:90px}.ks-recall-slip{top:201px;left:70%;width:145px;min-height:112px}.ks-recall-slip p{font-size:18px}.ks-coordinate-a{left:4%}.ks-coordinate-b{right:3%;bottom:28px}.ks-tool-row{gap:9px}.ks-tool{padding:8px 12px;font-size:11px!important}.ks-rotate{font-size:19px!important}.ks-instructions{margin-top:14px!important;font-size:9px}.mk-readouts{grid-template-columns:40px 1.4fr 1fr 1fr 1fr;gap:15px;margin-top:20px;padding-top:16px}.mk-readouts>div>span{font-size:7px}.mk-readouts b{font-size:22px}.mk-readouts [data-demo-source]{font-size:16px}.mk-demo-label{font-size:8px}.ks-renderer-note{font-size:7px}.mk-experiment{grid-column:1;margin-top:25px;gap:20px 28px;padding-top:20px}.mk-experiment-heading h2{font-size:9px}.mk-experiment-heading>span{font-size:18px}.mk-experiment legend{font-size:8px;margin-bottom:10px}.mk-source-choices button{font-size:8px!important;min-height:32px}.mk-mode-choices button{font-size:11px!important}.mk-experiment .mk-density{grid-column:auto}.mk-toggle>span{font-size:8px}.mk-toggle small{font-size:10px}.mk-experiment-buttons{grid-column:auto;border-top:0;padding:0;align-items:center}.mk-experiment-buttons button{font-size:11px!important}.mk-inside{border-top:1px solid var(--mk-line);padding-top:14px}.mk-inside summary{font-size:8px}.mk-inside li p{font-size:11px}.mk-inside ol{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}.mk-ticker{margin-inline:5%;font-size:7px;gap:12px;padding:17px 0;justify-content:space-between}.mk-ticker>span:nth-child(5){display:none}.mk-section{margin-inline:5%;padding-block:57px}.mk-section-heading{display:block;margin-bottom:32px}.mk-section h2{font-size:clamp(42px,7vw,57px);margin-top:12px}.mk-section-heading>p{font-size:12px;max-width:340px;margin-top:22px!important;padding:0}.mk-section-heading>p br{display:none}.mk-process-layout{grid-template-columns:1fr;gap:25px}.mk-process-steps{display:grid;grid-template-columns:1fr}.mk-process-steps>button{padding:13px 10px;gap:20px}.mk-process-steps>button[aria-selected=true]{padding-left:7px}.mk-process-steps>button>span{font-size:10px}.mk-process-steps h3{font-size:10px}.mk-process-steps p{margin-top:4px!important;font-size:10px}.mk-process-demo{min-height:419px;max-width:570px;width:100%;margin:auto}.mk-drop-sheet{width:280px;padding:30px 26px}.mk-drop-sheet h3{font-size:39px}.mk-section-note{font-size:8px;line-height:1.7}.mk-fragment-scene{padding-left:100px;max-width:430px}.mk-fragment-original{width:165px}.mk-fragment{padding:17px}.mk-fragment p{font-size:12px}.mk-build-scene{max-width:410px}.mk-build-scene h3{font-size:23px}.mk-build-scene>p{font-size:10px}.mk-proof-layout{grid-template-columns:1fr;gap:40px;max-width:600px;margin:auto}.mk-source-page{padding:29px 29px 22px;max-width:440px;margin:auto}.mk-source-page h3{font-size:41px}.mk-source-page>p{font-size:11px}.mk-proof-question{padding:0;max-width:440px;margin:auto;width:100%}.mk-proof-question>h3{font-size:32px;margin:21px 0 27px!important}.mk-proof-answer{font-size:23px}.mk-source-indicator{margin-top:25px;max-width:100%}.mk-proof-margin{margin-top:25px;max-width:none}.mk-question-section{grid-template-columns:1fr;gap:33px}.mk-question-intro{padding:0}.mk-question-intro h2{font-size:43px;margin-bottom:22px!important}.mk-question-intro h2 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