@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/2c55a0e60120577a-s.2a48534a.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/9c72aa0f40e4eef8-s.18a48cbc.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/ad66f9afd8947f86-s.7a40eb73.woff2)format("woff2");unicode-range:U+1F??}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/5476f68d60460930-s.c995e352.woff2)format("woff2");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/2bbe8d2671613f1f-s.76dcb0b2.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/1bffadaabf893a1e-s.7cd81963.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/83afe278b6a6bb3c-s.p.3a6ba036.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter Fallback;src:local(Arial);ascent-override:90.44%;descent-override:22.52%;line-gap-override:0.0%;size-adjust:107.12%}.inter_c1557d63-module__m770Ca__className{font-family:Inter,Inter Fallback;font-style:normal}
@font-face{font-family:Mystery Quest;font-style:normal;font-weight:400;font-display:swap;src:url(../media/45adc791490d0842-s.470d4706.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Mystery Quest;font-style:normal;font-weight:400;font-display:swap;src:url(../media/309b3a8169237850-s.p.fc37c5ff.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Mystery Quest Fallback;src:local(Arial);ascent-override:102.06%;descent-override:42.21%;line-gap-override:0.0%;size-adjust:94.63%}.mystery_quest_f864f604-module__vBj7rG__className{font-family:Mystery Quest,Mystery Quest Fallback;font-style:normal;font-weight:400}
.about-page{align-items:center;gap:var(--main-spacing);height:var(--main-height);padding:var(--main-spacing);flex-direction:column;display:flex}html{--surface-20:#01171b33;--surface-40:#01171b66;--surface-60:#01171b99;--surface-80:#01171bcc;--surface-90:#01171be6;--surface-100:#01171b;--surface:var(--surface-90);--blue:#0ff;--green:#0f0;--pink:#f0f;--yellow:#ff0;--interaction-color:#033f49;--logo-color:#fbd434}body{background:var(--interaction-color);color:#fff;-webkit-tap-highlight-color:#0000}::selection{color:#000;background-color:#74c69d}.blue{color:var(--blue)}.green{color:var(--green)}.pink{color:var(--pink)}.yellow{color:var(--yellow)}.avatar-square{aspect-ratio:1;cursor:pointer;height:var(--header-height);place-items:center;display:grid}.avatar-square:active,.avatar-square:focus-visible,.avatar-square:hover{background:var(--interaction-color)}.avatar-circle{aspect-ratio:1;font-size:calc(.4*var(--header-height));border:2px solid #fff;border-radius:50%;place-items:center;height:70%;display:grid}.avatar-menu{background:var(--surface-100);border-radius:var(--radius);overflow:hidden}.background{object-fit:cover;z-index:-2}.bank{background:var(--surface);border-radius:var(--radius);-webkit-user-select:none;user-select:none;grid-area:bank;place-items:center;display:grid}@media (min-width:1024px){.bank{height:var(--practice-form-height);min-width:var(--practice-form-min-width);justify-content:left;width:max-content;padding-inline:1rem}}.header .bank{height:var(--header-height);margin-right:var(--main-spacing);background:0 0;display:none}@media (min-width:360px){.header .bank{display:grid}}@media (min-width:1024px){.header .bank{min-width:auto;padding:0}}.bank-rows{--font-size:var(--font-lg);font-size:var(--font-size);flex-direction:column;gap:.25rem;display:flex}@media (min-width:640px){.bank-rows{gap:calc(.7*var(--font-size));flex-direction:row}}.header .bank-rows{--font-size:calc(.37*var(--header-height));flex-direction:row}.bank-row{align-items:center;gap:calc(.35*var(--font-size));display:flex}.bank-row .bank-icon{width:var(--font-size)}.bank-row.gold-row{min-width:calc(2.65*var(--font-size))}@media (min-width:640px){.bank-row.gold-row.has-one-digit{min-width:calc(2*var(--font-size))}}.celebrate-page{gap:var(--main-spacing);height:var(--main-height);padding:var(--main-spacing);flex-direction:column;display:flex}@media (min-width:1024px){.celebrate-page{align-items:center}}html{--addition-cell-side-length:max(3rem,calc(var(--table-side-length)/12));--multiplication-cell-side-length:max(3rem,calc(var(--table-side-length)/14));--table-side-length:calc(100vw - 2*var(--main-spacing))}@media (min-width:1024px){html{--addition-cell-side-length:calc(var(--table-side-length)/12);--multiplication-cell-side-length:calc(var(--table-side-length)/14);--table-side-length:calc(var(--main-height) - 2*var(--main-spacing))}}.addition-cell-sizing{height:var(--addition-cell-side-length);width:var(--addition-cell-side-length)}.multiplication-cell-sizing{height:var(--multiplication-cell-side-length);width:var(--multiplication-cell-side-length)}.copyright-notice{font-size:var(--font-sm);flex-direction:column;align-items:center;gap:.5rem;padding:.75rem 0 1.25rem;display:flex}.explanation-viewport{-webkit-mask-image:linear-gradient(to bottom,transparent,black var(--fade-top),black calc(100% - var(--fade-bottom)),transparent);mask-image:linear-gradient(to bottom,transparent,black var(--fade-top),black calc(100% - var(--fade-bottom)),transparent);display:grid;overflow:hidden}.explanation-scroller{-ms-overflow-style:none;scrollbar-width:none;display:grid;overflow-y:auto}.explanation-scroller::-webkit-scrollbar{display:none}.explanation-content{flex-direction:column;align-items:center;gap:.25rem;margin-block:auto;display:flex}@media (min-width:1024px){.explanation-content{align-items:flex-start;gap:.5rem}}.explore-cell-link{padding:.0625rem;display:block}.explore-cell-link:has(.has-bold-background){padding:0}.explore-cell-link-content{background:var(--surface);border-radius:var(--radius-cell);place-items:center;height:100%;display:grid;position:relative}.explore-cell-link-content.has-bold-background{background:var(--surface-100)}.explore-cell-link-content.has-bold-text{font-weight:700}.explore-cell-link-content.has-bridge:before,.explore-cell-link-content.has-bridge:after{background:var(--surface-100);border-radius:inherit;content:"";z-index:-1;position:absolute;inset:0}.explore-cell-link-content.has-left-bridge:after{left:-50%}.explore-cell-link-content.has-top-bridge:before{top:-50%}td:not(:last-child) .explore-cell-link-content.has-right-bridge:after{right:-50%}tr:not(:last-child) td .explore-cell-link-content.has-bottom-bridge:before{bottom:-50%}:focus-visible>.explore-cell-link-content,:hover>.explore-cell-link-content{background:var(--interaction-color)}html{--fade:1.5rem;overscroll-behavior:none;--main-height:calc(100vh - var(--header-height));--history-gap:1vw;--history-cell-translation:calc(-1*(100% + var(--history-gap)));--inset-history-water:calc(30% + -1*(var(--history-gap)));--practice-form-height:3rem;--practice-form-min-width:10.5rem}body:has([data-testid=underlay]){cursor:pointer}.header{background:var(--surface);height:var(--header-height);gap:.25rem;display:flex}@media (min-width:480px){.header{gap:.5rem}}@media (min-width:640px){.header{gap:.75rem}}@media (min-width:768px){.header{gap:1rem}}html{--header-height:3rem}@media (min-width:360px){html{--header-height:3.25rem}}@media (min-width:480px){html{--header-height:3.5rem}}@media (min-width:640px){html{--header-height:3.75rem}}@media (min-width:768px){html{--header-height:4rem}}@media (min-width:1024px){html{--header-height:3.5rem}}.home-page{align-items:center;gap:var(--main-spacing);height:var(--main-height);padding:var(--main-spacing);flex-direction:column;display:flex}.icon-wrapper{aspect-ratio:1;width:calc(2*var(--font-lg))}.keep-practicing-link{background:var(--surface);border-radius:var(--radius);text-align:center;place-self:center;width:max-content;padding:1rem}.keep-practicing-link:active,.keep-practicing-link:focus-visible,.keep-practicing-link:hover{background:var(--interaction-color)}@media (min-width:1024px){.keep-practicing-link{place-self:auto}}.keypad{gap:var(--keypad-gap);flex:1.5 0 0;grid-template-columns:repeat(3,1fr);display:grid}.keypad-button{background:var(--surface);border-radius:var(--radius);font-size:var(--font-lg)}.keypad-button:active{background:var(--interaction-color)}.logo{color:var(--logo-color);font-size:calc(.5*var(--header-height));height:100%;padding-inline:var(--main-spacing);place-items:center;margin-right:auto;display:grid}.logo:active,.logo:focus-visible,.logo:hover{background:var(--interaction-color)}.menu-item{cursor:pointer;align-items:center;gap:var(--icon-right-margin);min-width:max-content;padding:.75rem;display:flex}.menu-item:active,.menu-item:focus-visible,.menu-item:hover{background:var(--interaction-color)}@media (min-width:1024px){.menu-item.hidden-for-lg{display:none}}.message{background:var(--surface);border-radius:var(--radius);width:fit-content;padding:.5rem}@media (min-width:1024px){.message{padding:1rem}.message.indent-1{margin-left:1rem}.message.indent-2{margin-left:2rem}.message.indent-3{margin-left:3rem}}.not-found-page{align-items:center;gap:var(--main-spacing);height:var(--main-height);padding:var(--main-spacing);flex-direction:column;display:flex}.page-header{place-self:center;width:max-content}@media (min-width:1024px){.table-page-wide .page-header{align-self:start}}.page-header-button{background:var(--surface);border-radius:var(--radius);cursor:pointer;justify-content:center;align-items:center;padding:.75rem 1rem;display:flex}.page-header-button:active,.page-header-button:focus-visible,.page-header-button:hover{background:var(--interaction-color)}.page-header-text{font-size:var(--font-lg);margin-inline:.75rem}.page-header-popover-viewport{background:var(--surface-100);border-radius:var(--radius);max-height:inherit;min-width:var(--trigger-width);position:relative;overflow:hidden}.page-header-popover-viewport:before,.page-header-popover-viewport:after{content:"";opacity:0;pointer-events:none;z-index:2;height:4rem;transition:opacity .2s ease-out;position:absolute;left:0;right:0}.page-header-popover-viewport:before{background:linear-gradient(to bottom,var(--surface-100)0%,var(--surface-80)40%,var(--surface-40)70%,transparent 100%);top:0}.page-header-popover-viewport:after{background:linear-gradient(to top,var(--surface-100)0%,var(--surface-90)30%,var(--surface-60)60%,var(--surface-20)85%,transparent 100%);bottom:0}.page-header-popover-viewport.is-scrolled-from-top:before,.page-header-popover-viewport.is-scrolled-from-bottom:after{opacity:1}.page-header-popover-scroller{max-height:inherit;-ms-overflow-style:none;scrollbar-width:none;overflow:auto}.page-header-popover-scroller::-webkit-scrollbar{display:none}.paragraph{background:var(--surface);border-radius:var(--radius);width:max-content;padding:1rem 1.5rem}.practice-coin{--rise:50%;--size:60%;--offset:calc((100% - var(--size))/2);height:var(--size);left:var(--offset);opacity:0;top:calc(-1*var(--rise));width:var(--size);z-index:1;animation:.5s linear practice-coin-keyframes;position:absolute}@keyframes practice-coin-keyframes{0%{opacity:1;transform:translateY(var(--rise))}85%{opacity:1}to{opacity:0;transform:translateY(0)rotateY(540deg)}}.practice-form{background:var(--surface);border-radius:var(--radius);font-size:var(--font-lg);grid-area:form;justify-content:center;align-items:center;padding-inline:.75rem;display:flex}@media (min-width:1024px){.practice-form{height:var(--practice-form-height);min-width:var(--practice-form-min-width);justify-content:left;width:max-content;padding-inline:1rem}}.practice-form-equation{gap:.375rem;display:flex}.practice-form-expression,.practice-form-answer{width:max-content}.practice-form-submitter{display:none}.practice-guidance-narrow-space{flex:1 0 0;place-items:center;min-height:8.3125rem;display:grid}@media (min-width:1024px){.practice-guidance-narrow-space{display:none}}.practice-guidance-narrow-section{flex-direction:column;justify-content:center;align-items:center;gap:.25rem;width:fit-content;display:flex}.practice-guidance-wide-section{gap:var(--gap-between-messages);flex-direction:column;display:none}@media (min-width:1024px){.practice-guidance-wide-section{display:flex}}.practice-history{gap:var(--history-gap);grid-area:history;display:flex;position:relative}.practice-history-cell{aspect-ratio:1;opacity:var(--end-opacity);translate:var(--history-cell-translation);width:100%;animation:.2s ease-out practice-history-cell-keyframes}.practice-history-cell:empty+.practice-history-cell.current{animation:none}.practice-history-cell{--start-opacity:1;--end-opacity:1}.practice-history-cell.current{--start-opacity:0}.practice-history-cell.exiting{--end-opacity:0}@keyframes practice-history-cell-keyframes{0%{opacity:var(--start-opacity);translate:0}to{opacity:var(--end-opacity);translate:var(--history-cell-translation)}}.practice-leaf{scale:0}.practice-leaf.is-showing{transition:scale .1s ease-in;scale:1}.practice-leaf.index-1>svg{rotate:90deg}.practice-leaf.index-2>svg{rotate:-90deg}.practice-leaf.index-3>svg{rotate:180deg}.practice-page-narrow{gap:var(--main-spacing);height:var(--main-height);padding:var(--main-spacing);flex-direction:column;display:flex}@media (min-width:1024px){.practice-page-narrow{display:none}}.practice-page-narrow-trigrid{gap:var(--trigrid-gap);grid-template-rows:repeat(2,1fr);grid-template-columns:repeat(2,minmax(0,1fr));grid-template-areas:"history bank""form bank";display:grid}@media (min-width:640px){.practice-page-narrow-trigrid{grid-template-rows:1fr;grid-template-columns:repeat(3,1fr);grid-template-areas:"history form bank"}}.practice-plant{aspect-ratio:1;background:var(--surface);border-radius:var(--radius-cell);grid-template-columns:repeat(2,1fr);height:100%;display:grid}.practice-table-cell{padding:1px;position:relative}.practice-table-th-content{aspect-ratio:1;background:var(--surface);border-radius:var(--radius-cell);-webkit-user-select:none;user-select:none;place-items:center;height:100%;font-weight:700;display:grid}html{--radius-cell:18%;--radius:.5625rem}@media (min-width:360px){html{--radius:.625rem}}@media (min-width:480px){html{--radius:.6875rem}}@media (min-width:640px){html{--radius:.75rem}}@media (min-width:768px){html{--radius:.8125rem}}@media (min-width:1024px){html{--radius:.875rem}}@media (min-width:1280px){html{--radius:.9375rem}}@media (min-width:1536px){html{--radius:1rem}}*{box-sizing:border-box;border:none;outline:none;margin:0;padding:0}a{color:inherit;text-decoration:none}ul{list-style:none}svg{display:block}button,h1,h2,input{color:inherit;font:inherit;background:0 0}.rung{flex-direction:column;align-items:center;line-height:2.25rem;display:inline-flex;position:relative}.rung:before{content:"↑";font-size:var(--font-sm);display:none;position:absolute;top:50%;translate:0 -50%}.rung.should-show:before{display:inline}.scrollable-table-viewport{border-radius:var(--radius);flex:1 0 0;max-width:max-content;position:relative;overflow:hidden}.scrollable-table-content{-ms-overflow-style:none;scrollbar-width:none;height:100%;overflow:auto}.scrollable-table-content::-webkit-scrollbar{display:none}.scrollable-table-content th{background:var(--surface-100);z-index:3;position:sticky;top:0;left:0}.scrollable-table-content thead th:first-child{z-index:4}.scrollable-table-content thead th:not(:first-child,:last-child):before,.scrollable-table-content thead th:not(:first-child,:last-child):after{background:var(--surface-100);border-radius:inherit;content:"";z-index:-1;position:absolute;inset:0}.scrollable-table-content thead th:not(:first-child,:last-child):after{right:-50%}.scrollable-table-content thead th:nth-child(2):after{left:-50%}.scrollable-table-content tbody tr:not(:last-child) th:before,.scrollable-table-content tbody tr:not(:last-child) th:after{background:var(--surface-100);border-radius:inherit;content:"";z-index:-1;position:absolute;inset:0}.scrollable-table-content tbody tr:not(:last-child) th:before{bottom:-50%}.scrollable-table-content tbody tr:first-child th:before{top:-50%}.separator{background:#fff;height:1px;margin-block:.5rem}.settings-page{align-items:center;gap:var(--main-spacing);height:var(--main-height);padding:var(--main-spacing);flex-direction:column;display:flex}html{--gap-between-messages:.5rem;--icon-right-margin:1rem;--keypad-gap:.25rem;--main-spacing:.5rem;--trigrid-gap:.5rem}@media (min-width:360px){html{--main-spacing:.75rem}}@media (min-width:480px){html{--main-spacing:1rem}}@media (min-width:640px){html{--main-spacing:1.25rem}}@media (min-width:768px){html{--main-spacing:1.5rem}}@media (min-width:1024px){html{--main-spacing:1.75rem}}@media (min-width:1280px){html{--main-spacing:2rem}}@media (min-width:1536px){html{--main-spacing:2.25rem}}.table{border-collapse:collapse;height:var(--table-side-length);width:var(--table-side-length)}.table-page-narrow{gap:var(--main-spacing);height:var(--main-height);padding:var(--main-spacing);grid-template-rows:auto 1fr 1fr;grid-template-columns:1fr;display:grid}@media (min-width:1024px){.table-page-narrow{display:none}}.table-page-wide{gap:var(--main-spacing);height:var(--main-height);padding:var(--main-spacing);display:none}@media (min-width:1024px){.table-page-wide{display:flex}}.table-page-wide-right-column{gap:var(--gap-between-messages);flex-direction:column;display:flex}html{--font-sm:.875rem;--font-lg:clamp(1.25rem,5vw,1.5rem)}@media (min-width:1024px){html{--font-lg:1.25rem}}body{font-size:1.25rem}.italic{font-style:italic}.verify-email-button{background:var(--surface);border-radius:var(--radius);cursor:pointer;padding:.5rem}.verify-email-page{align-items:center;gap:var(--main-spacing);height:var(--main-height);padding:var(--main-spacing);flex-direction:column;display:flex}.watering-can{z-index:2;width:150%;height:150%;position:absolute;top:-35%;left:50%;transform:rotate(-30deg)}.watering-can.opposite-side{left:auto;right:50%;transform:rotate(30deg)scaleX(-1)}.practice-history>.watering-can{height:100%;left:var(--inset-history-water);width:100%;top:-10%}.celebrate-page .watering-can{display:none}