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var(--s2);border:var(--stroke) solid var(--ink);border-radius:var(--pill);background:var(--paper);font:700 var(--small)/1 var(--font-text);color:var(--ink);box-shadow:var(--offset);cursor:pointer;transition:transform var(--dur-ui) var(--ease-arrive),background-color var(--dur-ui) var(--ease-ui),opacity var(--dur-ui) var(--ease-ui)}[data-section=hero] .chip i{width:16px;height:16px;border-radius:50%;background:var(--c);border:var(--stroke) solid var(--ink);flex:none}[data-section=hero] .chip:hover:not(:disabled){background:var(--brand-wash);transform:translateY(-1px)}[data-section=hero] .chip:active:not(:disabled){transform:translateY(4px);box-shadow:var(--pressed)}[data-section=hero] .chip:disabled{cursor:default}[data-section=hero] .chip.is-picked{background:var(--brand-tint)}[data-section=hero] .chip.is-tried{opacity:.45;text-decoration:line-through;text-decoration-thickness:2px}[data-section=hero] .you--turn.is-on .chip{animation:arrive var(--dur-arrive) var(--ease-arrive) 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var(--font-hand);color:var(--brand)}[data-section=hero] .pz-spark span{transform:rotate(-4deg)}[data-section=hero] .pz-move{font:500 var(--small)/1 var(--font-text);color:var(--ink);background:var(--paper);border:var(--stroke) solid var(--line);border-radius:var(--pill);padding:var(--s1) var(--s2);box-shadow:none;display:inline-flex;align-items:center;gap:var(--s1)}[data-section=hero] .pz-move svg{width:18px;height:18px;flex:none}[data-section=hero] .pz-move.pz-pulse{transform-origin:0 100%;animation:hero-pulse var(--dur-draw) var(--ease-pen) 1}@keyframes hero-pulse{40%{scale:1.07;background-color:var(--brand-wash)}}[data-section=hero] .pz-keychip{position:absolute;left:var(--s2);bottom:var(--s2);z-index:5;pointer-events:none;opacity:0;transition:opacity var(--dur-ui) var(--ease-ui);font:500 var(--label)/1.5 var(--font-text);color:var(--mute);background:var(--paper);border:var(--stroke) solid var(--line);border-radius:var(--r-control);padding:var(--s1) var(--s2)}[data-section=hero] 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.pz-tag,[data-section=hero] .pz.moving .pz-leaders{opacity:0!important;transition:opacity var(--dur-micro) linear}@media(max-width:600px){[data-section=hero] .pz-keychip{display:none}}[data-section=hero] .pz-pickname{color:var(--guess-text);transition:opacity var(--dur-micro) var(--ease-ui)}[data-section=hero] .pz-pickname span{clip-path:none}[data-section=hero] .pz-pickname.is-right{color:var(--understood-text)}[data-section=hero] .pz-pick{position:absolute;left:0;top:0;z-index:3;pointer-events:none;border-radius:var(--r-control);outline:none}[data-section=hero] .pz-pick[hidden]{display:none}[data-section=hero] .pz-pick:focus-visible{outline:var(--focus);outline-offset:0}[data-section=hero] .pz-keychip--pick{left:auto;right:var(--s2)}[data-section=hero] .pz-pick:focus-visible~.pz-keychip--pick{opacity:1}[data-section=hero] .pz .pz-gl:focus-visible~.pz-keychip--pick{opacity:0}[data-section=hero] .hero__h1 .ln{display:block;overflow:hidden;padding-bottom:.1em;margin-bottom:-.1em}[data-section=hero] .hero__h1 .ln>span{display:inline-block;animation:line-up var(--dur-text) var(--ease-text) both}[data-section=hero].is-revealing .hero__intro .lead{animation:fade-up var(--dur-text) var(--ease-text) .4s both}[data-section=hero].is-revealing .hero__intro .ctas{animation:fade-up var(--dur-text) var(--ease-text) .5s both}[data-section=hero].is-revealing .hero__claim{animation:fade-up var(--dur-text) var(--ease-text) .6s both}@media(prefers-reduced-motion:reduce){[data-section=hero] .tk-spark,[data-section=hero] .you--turn.is-on .chip{animation:none;opacity:1}[data-section=hero] .caption,[data-section=hero] .you,[data-section=hero] .chip{transition:none}[data-section=hero] .pz-hand span{clip-path:none}[data-section=hero] .pz-move.pz-pulse{animation:none}}section[data-section=why-spark]{position:relative;isolation:isolate;padding-top:calc(var(--section-pad) * 2)}[data-section=why-spark] .ev-ground{position:absolute;inset:0;z-index:-1;pointer-events:none;background-color:var(--brand-deep)}[data-section=why-spark] .ev-ground:after{content:"";position:absolute;inset:0;background-image:conic-gradient(from 90deg at 1px 1px,transparent 25%,var(--evening-grid) 0);background-size:28px 28px;background-position:50% var(--ev-y,0)}[data-section=why-spark] .ev-ground--in{top:var(--section-pad)}[data-section=why-spark] .ev-ground--in:before{content:"";position:absolute;left:0;right:0;top:calc(-1 * var(--rule));height:var(--rule);background:var(--ink)}[data-section=why-spark] .ev-ground--in:after{-webkit-mask-image:linear-gradient(transparent,#000 var(--s3));mask-image:linear-gradient(transparent,#000 var(--s3))}[data-section=why-spark] .h2{margin:0;color:var(--paper)}[data-section=why-spark] .ws{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gutter)}[data-section=why-spark] .ws-h{grid-column:1/11;max-width:22ch;text-wrap:balance}[data-section=why-spark] .ws-points{grid-column:1/5;grid-row:2;align-self:center;display:grid;row-gap:var(--s12);margin-top:var(--s8)}[data-section=why-spark] .ws-point__h{margin:0;max-width:16ch;font:var(--h3-weight) var(--h3)/1.2 var(--font-display);letter-spacing:-.01em;color:var(--paper);text-wrap:balance}[data-section=why-spark] .ws-text{margin:var(--s2) 0 0;max-width:34ch;font:400 var(--body)/1.6 var(--font-text);color:var(--evening-soft)}[data-section=why-spark] .ws-point__btn{display:inline;margin:0;padding:0;border:0;background:none;color:inherit;font:inherit;letter-spacing:inherit;text-align:left;cursor:pointer}[data-section=why-spark] .ws-point__btn:focus-visible{outline:3px solid var(--paper);outline-offset:var(--focus-offset);border-radius:var(--r-tight)}[data-section=why-spark] .ws-more{display:inline-block;width:.5em;height:.5em;margin-left:.35em;vertical-align:.12em;border:solid var(--evening-mute);border-width:0 var(--stroke) var(--stroke) 0;transform:rotate(45deg);transition:transform var(--dur-ui) var(--ease-ui),border-color var(--dur-ui) var(--ease-ui)}[data-section=why-spark] .ws-more-t{display:grid;grid-template-rows:0fr;visibility:hidden;transition:grid-template-rows var(--dur-ui) var(--ease-text),visibility 0s linear var(--dur-ui)}[data-section=why-spark] .ws-more-t>div{min-height:0;overflow:hidden}[data-section=why-spark] .ws-point.is-open .ws-more-t{grid-template-rows:1fr;visibility:visible;transition:grid-template-rows var(--dur-ui) var(--ease-text),visibility 0s}[data-section=why-spark] .ws-point.is-open .ws-more{transform:translateY(.15em) rotate(225deg);border-color:var(--paper)}@media(hover:hover)and (min-width:1024px){[data-section=why-spark] .ws-more-t{grid-template-rows:1fr;visibility:visible;transition:none}[data-section=why-spark] .ws-more-t .ws-text{opacity:0;transform:translateY(-6px);transition:opacity var(--dur-ui) var(--ease-ui),transform var(--dur-ui) var(--ease-text)}[data-section=why-spark] .ws-point:hover .ws-text,[data-section=why-spark] .ws-point:focus-within .ws-text,[data-section=why-spark] .ws-point.is-open .ws-text{opacity:1;transform:none}[data-section=why-spark] .ws-point:hover .ws-more,[data-section=why-spark] .ws-point:focus-within .ws-more{transform:translateY(.15em) rotate(225deg);border-color:var(--paper)}}@media(prefers-reduced-motion:reduce){[data-section=why-spark] .ws-more-t,[data-section=why-spark] .ws-more-t .ws-text,[data-section=why-spark] .ws-more{transition:none}}[data-section=why-spark] .ws-now{grid-column:1/9;margin:var(--s16) 0 0;max-width:46ch;font:400 var(--lead)/1.5 var(--font-text);color:var(--evening-soft)}[data-section=why-spark] .ws-now span{color:var(--paper)}[data-section=why-spark] .ws-ex{grid-column:6/-1;grid-row:2;margin:var(--s8) 0 0;min-width:0;background:var(--paper);border:var(--stroke) solid var(--line);border-radius:var(--r-card);box-shadow:none;padding:var(--s6);color:var(--ink)}[data-section=why-spark] .ex-q__t{margin:0;display:inline-block;padding:var(--s2) var(--s3);max-width:100%;border:var(--stroke) solid var(--ink);border-radius:var(--r-tight) var(--r-card) var(--r-card) var(--r-card);font:400 var(--hand)/1.25 var(--font-hand);color:var(--ink)}[data-section=why-spark] .ex-paths{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:var(--s4);align-items:start;margin-top:var(--s6)}[data-section=why-spark] .ex-path{display:flex;flex-direction:column;align-items:flex-start;min-width:0}[data-section=why-spark] .ex-path--bot{padding-top:var(--s3)}[data-section=why-spark] .ex-path--spark{padding:var(--s3);background:var(--brand-wash);border:0;border-radius:var(--r-control)}[data-section=why-spark] .ex-k{margin:0 0 var(--s2);font:700 var(--small)/1.4 var(--font-text);letter-spacing:normal;text-transform:none;color:var(--mute)}[data-section=why-spark] .ex-path--spark .ex-k{color:var(--brand)}[data-section=why-spark] .ex-node{margin:0;max-width:100%}[data-section=why-spark] .ex-node--answer{padding:var(--s2);border:var(--stroke) dashed var(--mute);border-radius:var(--r-tight) var(--r-card) var(--r-card) var(--r-card);font:500 var(--small)/1.5 var(--font-text);color:var(--mute)}[data-section=why-spark] .ex-node--ghost{padding:var(--s1) var(--s2);border:var(--stroke) dashed var(--mute);border-radius:var(--pill);font:500 var(--small)/1.2 var(--font-text);color:var(--mute)}[data-section=why-spark] .ex-node--spark{padding:var(--s2);background:var(--paper);border:var(--stroke) solid var(--ink);border-radius:var(--r-tight) var(--r-card) var(--r-card) var(--r-card);box-shadow:none;font:var(--h3-weight) var(--lead)/1.3 var(--font-display);letter-spacing:-.01em;color:var(--ink)}[data-section=why-spark] .ex-node--kid{padding:var(--s1) var(--s2);background:var(--paper);border:var(--stroke) solid var(--ink);border-radius:var(--r-card) var(--r-card) var(--r-card) var(--r-tight)}[data-section=why-spark] .ex-node--got{border-color:var(--understood)}[data-section=why-spark] .ex-hand{display:inline-block;font:400 var(--lead)/1.25 var(--font-hand);color:var(--understood-text)}[data-section=why-spark] .ex-hand--guess{color:var(--guess-text)}[data-section=why-spark] .ex-arrow{position:relative;display:block;flex:none;width:var(--stroke);height:var(--s3);margin:var(--s1) 0 var(--s1) var(--s4);background:var(--ink);transform-origin:50% 0}[data-section=why-spark] .ex-path--bot .ex-arrow{background:var(--mute)}[data-section=why-spark] .ex-arrow:after{content:"";position:absolute;left:50%;bottom:0;width:var(--s1);height:var(--s1);margin-left:-4px;border-right:var(--stroke) solid var(--ink);border-bottom:var(--stroke) solid var(--ink);transform:rotate(45deg)}[data-section=why-spark] .ex-path--bot .ex-arrow:after{border-color:var(--mute)}[data-section=why-spark] .rl{display:block;overflow:hidden;padding-bottom:.1em;margin-bottom:-.1em}[data-section=why-spark] .rl-in{display:inline-block}[data-section=why-spark] .rl-armed .rl-in{transform:translateY(106%)}[data-section=why-spark] .rl-play .rl-in{animation:line-up var(--dur-text) var(--ease-text) both}[data-section=why-spark].ws-armed .ws-ex:not(.go-q) .ex-q__t{opacity:0}[data-section=why-spark].ws-armed .ws-ex.go-q .ex-q__t{animation:arrive var(--dur-arrive) var(--ease-arrive) both;transform-origin:0 0}[data-section=why-spark].ws-armed .ws-ex:not(.go-bot) .ex-path--bot>:not(.ex-k){opacity:0}[data-section=why-spark].ws-armed .ws-ex.go-bot .ex-path--bot>:not(.ex-k){opacity:1;transition:opacity var(--dur-fade) var(--ease-ui)}[data-section=why-spark].ws-armed .ws-ex:not(.go-s1) .ex-node--spark{opacity:0}[data-section=why-spark].ws-armed .ws-ex.go-s1 .ex-node--spark{animation:arrive var(--dur-arrive) var(--ease-arrive) both;transform-origin:0 0}[data-section=why-spark].ws-armed .ws-ex .ex-path--spark .ex-arrow{transform:scaleY(0)}[data-section=why-spark].ws-armed .ws-ex .ex-path--spark .ex-arrow:after{opacity:0}[data-section=why-spark].ws-armed .ws-ex .ex-path--spark .ex-node--kid{opacity:0}[data-section=why-spark].ws-armed .ws-ex .ex-path--spark .ex-hand{clip-path:inset(-20% 100% -20% 0)}[data-section=why-spark].ws-armed .ws-ex.go-s2 .ex-path--spark .ex-arrow:nth-of-type(1),[data-section=why-spark].ws-armed .ws-ex.go-s3 .ex-path--spark .ex-arrow:nth-of-type(2){transform:none;transition:transform var(--dur-fade) var(--ease-pen)}[data-section=why-spark].ws-armed .ws-ex.go-s2 .ex-path--spark .ex-arrow:nth-of-type(1):after,[data-section=why-spark].ws-armed .ws-ex.go-s3 .ex-path--spark .ex-arrow:nth-of-type(2):after{opacity:1;transition:opacity var(--dur-micro) var(--ease-ui) .3s}[data-section=why-spark].ws-armed .ws-ex.go-s2 .ex-path--spark .ex-node--kid:not(.ex-node--got),[data-section=why-spark].ws-armed .ws-ex.go-s3 .ex-path--spark .ex-node--got{opacity:1;transition:opacity var(--dur-fade) var(--ease-ui) .3s}[data-section=why-spark].ws-armed .ws-ex.go-s2 .ex-path--spark .ex-node--kid:not(.ex-node--got) .ex-hand,[data-section=why-spark].ws-armed .ws-ex.go-s3 .ex-path--spark .ex-node--got .ex-hand{animation:write-on var(--dur-hand) linear .4s both}@media(max-width:1023px){[data-section=why-spark] .ws-h{grid-column:1/-1}[data-section=why-spark] .ws-points{grid-column:1/-1;grid-row:auto;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:var(--gutter);margin-top:var(--s8)}[data-section=why-spark] .ws-ex{grid-column:1/-1;grid-row:auto;margin-top:var(--s8)}[data-section=why-spark] .ws-now{grid-column:1/-1;margin-top:var(--s12)}}@media(max-width:600px){[data-section=why-spark] .ws{grid-template-columns:minmax(0,1fr)}[data-section=why-spark] .ws-points{grid-template-columns:minmax(0,1fr);row-gap:var(--s6);margin-top:var(--s6)}[data-section=why-spark] .ws-point__h{font-size:var(--lead)}[data-section=why-spark] .ws-ex{margin-top:var(--s8);padding:var(--s3) var(--s2)}[data-section=why-spark] .ex-q__t{font-size:var(--lead);padding:var(--s1) var(--s2)}[data-section=why-spark] .ex-paths{grid-template-columns:minmax(0,1fr);row-gap:var(--s3);margin-top:var(--s3)}[data-section=why-spark] .ws-now{margin-top:var(--s8)}[data-section=why-spark] .ex-path--bot{padding-top:0}[data-section=why-spark] .ex-path--spark{padding:var(--s2)}[data-section=why-spark] .ws-now{margin-top:var(--s8);font-size:var(--body);line-height:1.6}}section[data-section=one-tutor]{position:relative;isolation:isolate;padding-bottom:var(--section-pad)}[data-section=one-tutor] .ev-ground{position:absolute;inset:0;z-index:-1;pointer-events:none;background-color:var(--brand-deep)}[data-section=one-tutor] .ev-ground:after{content:"";position:absolute;inset:0;background-image:conic-gradient(from 90deg at 1px 1px,transparent 25%,var(--evening-grid) 0);background-size:28px 28px;background-position:50% var(--ev-y,0)}[data-section=one-tutor] .ev-ground--out:before{content:"";position:absolute;left:0;right:0;bottom:calc(-1 * var(--rule));height:var(--rule);background:var(--ink)}[data-section=one-tutor] .ev-ground--out:after{-webkit-mask-image:linear-gradient(#000 calc(100% - var(--s3)),transparent);mask-image:linear-gradient(#000 calc(100% - var(--s3)),transparent)}[data-section=one-tutor] .h2{margin:0;color:var(--paper)}[data-section=one-tutor] .lead{margin-top:var(--s4);max-width:36ch;color:var(--evening-soft)}[data-section=one-tutor] .ot-exam{margin:var(--s8) 0 0;max-width:34ch;padding-top:var(--s3);border-top:var(--rule) solid var(--evening-mute);font:400 var(--body)/1.6 var(--font-text);color:var(--evening-soft)}[data-section=one-tutor] .ot-exam span{color:var(--paper)}[data-section=one-tutor] .ot{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gutter);align-items:start}[data-section=one-tutor] .ot-words{grid-column:1/6}[data-section=one-tutor] .ot-stage{grid-column:7/-1;min-width:0}[data-section=one-tutor] .ot-days{position:relative;display:grid;grid-template-columns:repeat(5,minmax(0,1fr))}[data-section=one-tutor] .ot-days:before{content:"";position:absolute;left:10%;right:10%;top:calc(var(--s2) + var(--s1) - 1px);height:var(--rule);background:var(--evening-mute)}[data-section=one-tutor] .ot-day{position:relative;display:grid;justify-items:center;gap:var(--s1);padding:var(--s2) 0;background:none;border:0;border-radius:var(--r-control);cursor:pointer;font:500 var(--small)/1.25 var(--font-text);color:var(--evening-mute);transition:color var(--dur-micro) var(--ease-ui)}[data-section=one-tutor] .ot-day i{display:block;width:var(--s2);height:var(--s2);border:var(--stroke) solid var(--evening-mute);border-radius:50%;background:var(--brand-deep);transition:background-color var(--dur-micro) var(--ease-ui),border-color var(--dur-micro) var(--ease-ui),transform var(--dur-micro) var(--ease-ui)}[data-section=one-tutor] .ot-day:hover{color:var(--paper)}[data-section=one-tutor] .ot-day:hover i{border-color:var(--paper)}[data-section=one-tutor] .ot-day[aria-selected=true]{color:var(--paper)}[data-section=one-tutor] .ot-day[aria-selected=true] i{background:var(--paper);border-color:var(--paper);transform:scale(1.3)}[data-section=one-tutor] .ot-day:focus-visible{outline:3px solid var(--brand-tint);outline-offset:0}[data-section=one-tutor] .ot-card{margin-top:var(--s3);display:flex;flex-direction:column;min-height:calc(var(--cell) * 13);background:var(--paper);border:var(--stroke) solid var(--line);border-radius:var(--r-card);box-shadow:none;padding:var(--s6);color:var(--ink)}[data-section=one-tutor] .ot-card p{margin:0}[data-section=one-tutor] .ot-when{font:500 var(--small)/1.5 var(--font-text);color:var(--mute)}[data-section=one-tutor] .ot-subj{margin-top:var(--s2)!important;font:var(--h-weight) var(--h2)/1.05 var(--font-display);letter-spacing:-.022em;color:var(--ink)}[data-section=one-tutor] .ot-topic{margin-top:var(--s1)!important;font:400 var(--lead)/1.4 var(--font-text);color:var(--ink-soft)}[data-section=one-tutor] .ot-talk{margin-top:auto;padding-top:var(--s6);display:grid;grid-template-columns:var(--s16) minmax(0,1fr);column-gap:var(--s2);align-items:end}[data-section=one-tutor] .ot-spark{width:var(--s16)}[data-section=one-tutor] .ot-say{align-self:center;padding:var(--s2) var(--s3);background:var(--brand-wash);border:var(--stroke) solid var(--line);border-radius:var(--r-card) var(--r-card) var(--r-card) var(--r-tight);font:var(--h3-weight) var(--lead)/1.35 var(--font-display);letter-spacing:-.01em;color:var(--ink)}[data-section=one-tutor] .ot-card.is-swap .ot-body,[data-section=one-tutor] .ot-card.is-swap .ot-say{animation:fade-up var(--dur-text) var(--ease-text) both}[data-section=one-tutor] .ot-card.is-swap .ot-say{animation-delay:var(--stagger)}@media(max-width:1023px){[data-section=one-tutor] .ot-words,[data-section=one-tutor] .ot-stage{grid-column:1/-1}[data-section=one-tutor] .ot-stage{margin-top:var(--s8);max-width:640px}[data-section=one-tutor] .ot-exam{grid-row:auto}}@media(max-width:600px){[data-section=one-tutor] .ot{grid-template-columns:minmax(0,1fr)}[data-section=one-tutor] .ot-exam{margin-top:var(--s6)}[data-section=one-tutor] .ot-card{padding:var(--s3);min-height:calc(var(--cell) * 10)}[data-section=one-tutor] .ot-subj{font-size:var(--h3)}[data-section=one-tutor] .ot-topic{font-size:var(--body)}[data-section=one-tutor] .ot-talk{grid-template-columns:var(--s12) minmax(0,1fr);padding-top:var(--s4)}[data-section=one-tutor] .ot-spark{width:var(--s12)}[data-section=one-tutor] .ot-say{padding:var(--s2);font-size:var(--body)}}@media(prefers-reduced-motion:reduce){[data-section=one-tutor] .ot-card.is-swap .ot-body,[data-section=one-tutor] .ot-card.is-swap .ot-say{animation:none}}[data-section=hub] .hb-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gutter)}[data-section=hub] .hb-grid--topic{margin-top:var(--s6)}[data-section=hub] .hb-grid>li{display:grid;min-width:0}[data-section=hub] .hb-card{display:flex;flex-direction:column;align-items:flex-start}[data-section=hub] .hb-t{padding-right:var(--s6);font:var(--h3-weight) var(--h3)/1.2 var(--font-display);letter-spacing:-.01em;color:var(--ink)}[data-section=hub] .hb-x{margin-top:var(--s2);font:400 var(--body)/1.5 var(--font-text);color:var(--ink-soft);max-width:34ch}[data-section=hub] .hb-card--who{min-height:calc(var(--cell) * 6)}[data-section=hub] .hb-card--topic{padding:var(--s3)}[data-section=hub] .hb-card--topic .hb-t{margin:0;font:var(--h3-weight) var(--body)/1.3 var(--font-display);letter-spacing:-.01em}[data-section=hub] .hb-card--topic .hb-x{margin-top:var(--s1);font:500 var(--small)/1.5 var(--font-text)}[data-section=hub] 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